Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| immunolocalization of the nuk receptor tyrosine kinase suggests roles in segmental patterning of the brain and axonogenesis. | neural kinase (nuk) encodes a murine receptor-like tyrosine kinase belonging to the eph/elk/eck family. protein localization studies indicate that during early embryogenesis nuk is confined to the developing nervous system, where it marks segments along the axis of the neural tube in the hindbrain (rhombomeres r2, r3 and r5) and specific morphological bulges of the midbrain and forebrain. subcellular localization of nuk indicates that this receptor is concentrated at sites of cell-cell contact, ... | 1994 | 8134103 |
| the incidence of heavy metals and other toxic elements in big game tissues. | the contents of heavy metals and non-metal elements (pb, cd, cu, zn, fe, mn, rb, ti, cr, se, sr) were analysed in red deer and wild boar tissues: kidneys, liver, muscles, bone. samples were collected in three sites during hunting seasons 1986/87 and 1987/88. the lead concentrations ranged from 0.8 microgram.g-1 (muscles) to 1.8 microgram.g-1 (kidneys), while cd levels ranged from 1.0 to 27.0 micrograms.g-1. the average levels of cu and zn in wild boar muscles were about 7.0 and 128 micrograms.g- ... | 1993 | 8108705 |
| genetic differentiation in populations of red deer, cervus elaphus, in denmark. | samples from 282 specimens of red deer (cervus elaphus l.) representing eleven localities, were collected during two hunting seasons, 1986-87 and 1987-88. four polymorphic isozymes are investigated, and allelic distributions among the populations within an area or among areas are heterogeneous. the differentiation among the populations may be explained as a result of random genetic drift. a dendrogram reveals that seven of the nine populations from the peninsula of jutland are closely related. | 1993 | 8106262 |
| isolation and characterization of srf accessory proteins. | many genes which are regulated by growth factors contain a common regulatory element, the serum response element (sre). activation of transcription by the sre involves a ternary complex formed between a ubiquitous factor, serum response factor (srf), and a second protein, p62/tcf. we used a yeast genetic screen to isolate cdnas encoding a protein, sap-1, with the dna binding properties of p62/tcf. the sap-1 sequence contains three regions of homology to the previously uncharacterized elk-1 prote ... | 1993 | 8103935 |
| a 1.8-mb yac contig in xp11.23: identification of cpg islands and physical mapping of ca repeats in a region of high gene density. | the genes araf1, syn1, timp, and pfc are clustered within 70 kb of one another, and, as reported in the accompanying paper (j. knight et al., 1994, genomics 21: 180-187), at least four more genes map within 400 kb: a cluster of krüppel-type zinc finger genes (including znf21, znf41, and znf81) and elk-1, a member of the ets oncogene superfamily. this gene-rich region is of particular interest because of the large number of disease genes mapping to xp11.23: at least three eye diseases (retinitis ... | 1994 | 8088827 |
| clustered organization of krüppel zinc-finger genes at xp11.23, flanking a translocation breakpoint at oatl1: a physical map with locus assignments for znf21, znf41, znf81, and elk1. | the znf21, znf41, and znf81 genes encode krüppel-type zinc-finger proteins (zfps) and have previously been mapped to chromosome xp. published data describing the clustering of zfp genes on human autosomes led us to investigate the organization of znf21, znf41, and znf81 on the x chromosome. rodent-human hybrid analysis sublocalized all three genes to xp22.11-p11.23. znf21, znf41, and znf81 were then shown to segregate within a series of yacs (95 to 730 kb) containing known markers at xp11.23, su ... | 1994 | 8088786 |
| heterogeneity of ternary complex factors in hela cell nuclear extracts. | ternary complex factors (tcfs) interact with the serum response factor and dna containing the c-fos serum response element to form a ternary complex that mediates induction of c-fos. tcf activities were partially purified from hela cell nuclear extracts by dna-cellulose and anion-exchange chromatography followed by two-dimensional gel electrophoresis. four different protein spots (p60tcf, p62tcf, p62.5tcf, and p64tcf) show renaturable tcf activity. one, p62tcf, was indistinguishable from the ets ... | 1994 | 8083237 |
| transcriptional activation of the immediate early gene pip92 by serum growth factors requires both ets and carg-like elements. | pip92 is an immediate early gene that is transcriptionally activated in mouse 3t3 fibroblasts upon treatment with serum growth factors or the tumor promoter 12-o-tetradecanoylphorbol-13-acetate. here we show that a 73-base pair pip92 promoter fragment located between base pairs 1231 and 1158 upstream of the transcription start site is sufficient to mediate transcriptional activation. this promoter fragment contains two binding sites for transcription factors of the ets family and a low affinity ... | 1994 | 8083220 |
| diagnosis of elaphostrongylus cervi infection in new zealand red deer (cervus elaphus) quarantined in canada, and experimental determination of a new extended prepatent period. | a modified baermann assay was used to recover dorsal-spined, first stage larvae of elaphostrongylus cervi from feces and lungs of red deer (cervus elaphus elaphus) from three of four herds imported from new zealand into canadian quarantine facilities. tests done on a series of fecal collections showed that larval output from infected red deer was low and sporadic, casting doubt on the efficacy of the baermann assay to detect all infected individuals in the herds. the animals had passed repeated ... | 1994 | 8076289 |
| c-fos transcriptional activity stimulated by h-ras-activated protein kinase distinct from jnk and erk. | ras proteins exert their mitogenic and oncogenic effects through activation of downstream protein kinases. an important question is how ras-generated signals reach the nucleus to activate downstream target genes. ap-1, a heterodimeric complex of jun and fos proteins, which activates mitogen-inducible genes, is a major nuclear target of ras. ras can stimulate ap-1 activity by inducing c-fos transcription, a process which is probably mediated by the erk1 and -2 mitogen-activated protein (map) kina ... | 1994 | 8072547 |
| molecular characterization of a family of ligands for eph-related tyrosine kinase receptors. | a family of tyrosine kinase receptors related to the product of the eph gene has been described recently. one of these receptors, elk, has been shown to be expressed only in brain and testes. using a direct expression cloning technique, a ligand for the elk receptor has been isolated by screening a human placenta cdna library with a fusion protein containing the extracellular domain of the receptor. this isolated cdna encodes a transmembrane protein. while the sequence of the ligand cdna is uniq ... | 1994 | 8070404 |
| antigens of adults and third-stage larvae of the meningeal worm, parelaphostrongylus tenuis (nematoda, metastrongyloidea). | we studied the antigens of adults and third-stage larvae of the meningeal worm, parelaphostrongylus tenuis, in an attempt to identify potential serodiagnostic molecules for this important infection of wild ungulates. soluble extracts of p. tenuis adult worms and third-stage larvae were separated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (sds-page) and two-dimensional (2d) electrophoresis and analyzed by immunoblotting using purified rabbit anti-p. tenuis immunoglobulin g (igg) ... | 1994 | 8068755 |
| transient activation of raf-1, mek, and erk2 coincides kinetically with ternary complex factor phosphorylation and immediate-early gene promoter activity in vivo. | we have investigated the early in vivo signaling events triggered by serum that lead to activation of the c-fos proto-oncogene in hela cells. both raf-1 and mek kinase activities are fully induced within 3 min of serum treatment and quickly decrease thereafter, slightly preceding the activation and inactivation of p42mapk/erk2. erk2 activity correlates tightly with a transient phosphatase-sensitive modification of ternary complex factor (tcf), manifested by the slower electrophoretic mobility of ... | 1994 | 8065354 |
| bonding soft reline materials to base metals. | in the past it has been difficult to treat soft tissue changes occurring beneath metal frameworks of removable partial dentures or complete dentures using soft reline materials. the main difficulty has been in getting the resilient materials to adhere to the metal. this research investigates the use of microabrading with and without a universal resin bonding system in achieving a clinically useful bond between two soft reline materials and a commonly used base-metal alloy. | 1994 | 8061785 |
| light microscopic studies of pedicle and early first antler development in red deer (cervus elaphus). | although it is known that deer antlerogenic potential resides in the periosteum of an antlerogenic region and antler forms through modified endochondral ossification, how a deciduous antler forms histologically through a permanent pedicle from the periosteum has not been reported. | 1994 | 8059982 |
| deer herd health and production profiling in new zealand. 2. preliminary results. | a 2 yr observational study of 15 commercial red deer farms is being conducted in new zealand and statistical analysis initiated. preliminary results for weaner deer growth, reproduction and deer mortality data are presented. multivariable statistical analyses are used to identify risk factors for these various outcomes. factors associated with yearling hind conception status were included in a putative path diagram and logistic regression was used to identify important factors. | 1994 | 8038796 |
| deer-herd health and production profiling in new zealand. i. study design. | a 2-year observational study was conducted on 15 commercial red-deer farms in the north island of new zealand, to provide health and production data, and identify risk factors for outcomes including health, reproduction, venison and velvet antler production. about 2,700 hinds, 2,400 weaner deer and 1,500 stags were monitored. daily management practices, deer performance and health problems were recorded. at 3-monthly visits, samples were collected from deer, pastures and soils. data were process ... | 1994 | 8038772 |
| the caax peptidomimetic compound b581 specifically blocks farnesylated, but not geranylgeranylated or myristylated, oncogenic ras signaling and transformation. | recently developed caax peptidomimetic compounds have been shown to be potent and specific inhibitors of farnesyl protein transferase activity and to block the growth of ras-transformed cells. however, whether this growth inhibitory action is specifically a consequence of blocking oncogenic ras signaling has not been determined. to address this question, we have utilized mutants of the normally farnesylated oncogenic ras protein (ras-f) that are modified by alternative lipids, a geranylgeranyl i ... | 1994 | 8034681 |
| the edmonton and red deer nursing program: collaborative model an update on implementation. | 1994 | 8030390 | |
| cloning and expression of the cervine interleukin 4 gene. | interleukin 4 (il-4), a cytokine produced by the t helper 2 subset of t lymphocytes is involved in up regulating antibody responses. a source of recombinant cervine il-4 would be useful for studying the immune response of deer to tuberculosis. we report here the cloning, sequencing and expression of recombinant cervine il-4. to achieve this mrna was isolated from red deer (cervus elaphus) mononuclear leucocytes. first strand cdna was synthesized from the mrna and the il-4 cdna was amplified, clo ... | 1994 | 8029646 |
| [parasitic arthropods from some species of wild mammals from middle pomerania]. | a total of 109 mammals belonging to 3 wild species: cervus elaphus, capreolus capreolus and sus scrofa were examined post mortem after delivery by hunters to the warehouses of the "jägerprodukt" company in sławno and osowo, and of the "las" company in sławsko (middle pomerania, poland). three species of ectoparasites were collected: ixodes ricinus, lipoptena cervi and haematopinus apri. the highest frequency and the highest index of infestation with ectoparasites were observed in cause of c. ela ... | 1994 | 8023500 |
| superovulation in red deer (cervus elaphus) and père david's deer (elaphurus davidianus), and fertilization rates following artificial insemination with père david's deer semen. | two comparative studies were undertaken using adult, female red and père david's deer to examine the ovulatory response of these animals to a superovulation regimen and fertilization rates following inter- and intraspecific laparoscopic insemination. in expt 1 six père david's deer and 12 red deer hinds were treated during the breeding season with an intravaginal progesterone-impregnated controlled internal drug release device (cidr) for 14 days, with 200 iu pregnant mares' serum gonadotrophin ( ... | 1994 | 8021886 |
| influence of prenatal photoperiod on postnatal reproductive development in male red deer (cervus elaphus). | male red deer calves, whose mothers had been kept for the last 14 weeks of gestation in long days (18 h light:6 h dark) (group l, n = 7) or short days (6 h light:18 h dark) (group s, n = 5), were kept in constant intermediate daylength (12 h light:12 h dark) from birth to 75 weeks of age. both groups showed the same live-weight gain. mean plasma lh concentrations were higher in group l than in group s from birth to 20 weeks of age (averaging 1.55 versus 0.48 ng ml-1, p < 0.001), from 21 to 45 we ... | 1994 | 8021883 |
| effect of exogenous gonadotrophins on oestrus, the lh surge and the timing and rate of ovulation in red deer (cervus elaphus). | red deer hinds (n = 38) were treated in the breeding season with five different gonadotrophin regimens to investigate the temporal relationship between oestrus, ovulation and the lh surge. all hinds were treated with progesterone-impregnated controlled internal drug release (cidr) devices to synchronize oestrus. the five treatments were as follows: treatment 1, controls; treatments 2, 3 and 4, 1200 iu pregnant mares' serum gonadotrophin (pmsg) was administered i.m. 72 h before cidr device withdr ... | 1994 | 8021874 |
| functional divergence of the map kinase pathway. erk1 and erk2 activate specific transcription factors. | growth factor-receptor interactions at the cell surface eventually leading to the transcriptional activation of immediate early genes is mediated by the mitogen-activated protein kinase (map kinase/mapk) cascade. here we show that overexpression of extracellular signal-regulated kinase 1 (erk1) cdna, encoding p44mapk, results in the activation of elk-1, the serum response factor accessory protein. we also show that overexpression of erk2, encoding p42mapk, activates myc, but not elk-1. therefore ... | 1994 | 8013639 |
| seasonality in digestion and rumen metabolism in red deer (cervus elaphus) fed on a forage diet. | six adult castrated male red deer (cervus elaphus), fitted with rumen cannulas, were offered chaffed lucerne hay ad lib. during winter and summer, with voluntary food intake (vfi) being respectively 59 and 89 g dry matter intake (dmi)/kg bodyweight 0.75 per d. the same animals were also offered the same feed during summer, with intake restricted to that of winter vfi. the apparent digestibility of gross energy (0.60) or fibre (0.41) and the total capacity (volume) of the rumen were unaffected by ... | 1994 | 8011605 |
| prevalence of antibodies to borrelia burgdorferi in danish deer. | to estimate the prevalence of antibodies to borrelia burgdorferi in the most common species of danish deer, blood samples were collected from roe deer (capreolus capreolus), fallow deer (dama dama), and red deer (cervus elaphus). a total of 156 blood samples were collected primarily from hunts in three areas of denmark from november 1990 to december 1991. presence of deer igg antibodies to the borrelia burgdorferi strain dk ecm 1 were shown by an indirect immunofluorescence assay at serum titre ... | 1994 | 8011306 |
| sedation of wild boar (sus scrofa) and red deer (cervus elaphus) with medetomidine and the influence on some haematological and serum biochemical variables. | medetomidine, an alpha-2 agonist, was tested for the sedation of wild boar (sus scrofa) (n = 6) and red deer (cervus elaphus) (n = 7). the effectivity of this drug and the dose required for handling, blood sampling, and minor surgery were established for both species. in addition the effect of medetomidine sedation on haematological and serum biochemical variables was studied. all animals used were clinically normal females aged approximately 1.5 years. the minimal dose required to sedate a wild ... | 1994 | 8009823 |
| inhibition of v-raf-dependent c-fos expression and transformation by a kinase-defective mutant of the mitogen-activated protein kinase erk2. | receptor-bound growth factors elicit intracellular signals that lead to the phosphorylation and activation of numerous intracellular kinases and transcription factors with consequent changes in patterns of gene expression. several oncogene products are able to mimic these signals, resulting in cell transformation and proliferation. for example, the introduction of oncogenic forms of raf-1 kinase into fibroblasts induces transformation and leads to the constitutive expression of, among others, th ... | 1994 | 8007980 |
| oxytocin stimulates uterine prostaglandin f2 alpha secretion in red deer cervus elaphus. | the prostaglandin f2 alpha analogue cloprostenol stimulates ovarian secretion of oxytocin in red deer hinds and père david's deer hinds, as in cattle and sheep, but the response of the uterus to administered oxytocin has not been studied in deer. in the present experiment, oxytocin administered intravenously caused an increase in circulating concentrations of 13,14-dihydro-15-keto prostaglandin f2 alpha from 186 +/- 35 to 404 +/- 34 pmol l-1 within 5 min; concentrations in saline-treated hinds w ... | 1994 | 7991799 |
| thyroid hormones are required for the expression of seasonal changes in red deer (cervus elaphus) stags. | experiment 1, from 6 july 1990 (winter) to 8 november 1990 (spring), examined the effect of an early elevation of plasma thyroid hormone concentrations on the expression of seasonal changes in 20-month-old stags. four stags were injected subcutaneously with 1 mg thyroxine (t4) daily, and four with vehicle only. plasma t4 concentration was elevated by injection of t4; the mean concentration 24 h after injection was 192 +/- 31 nmol l-1 compared with 58 +/- 5 nmol l-1 in controls on 21 september. h ... | 1994 | 7991787 |
| lipopolysaccharide induces activation of the raf-1/map kinase pathway. a putative role for raf-1 in the induction of the il-1 beta and the tnf-alpha genes. | bacterial lps is a potent macrophage activator. the early steps in lps signal transduction involve the tyrosine phosphorylation and activation of a number of kinases of the src family, and inhibition of this pathway causes a severe impairment in the production of the cytokines tnf-alpha and il-1 beta. we find that lps-induced macrophages activation also involves the raf-1 kinase, a key component in mitogenic signal transduction. treatment of bac-1.2f5 macrophages with lps causes phosphorylation ... | 1994 | 7989771 |
| regional distribution of estradiol receptors in growing antlers. | this study of estrogen receptors (er) was carried out to confirm their presence and to determine their localisation in antler bones. partially grown antlers were amputated from red deer (cervus elaphus) stags, the skin removed, and samples taken of periosteum, cartilaginous tissue including perichondrium, and bone. capacity and binding of free er in the samples were calculated by scatchard analysis of data obtained from a radioreceptor assay which utilised [3h]estradiol as tracer. high affinity ... | 1994 | 7985211 |
| electron microscopic findings in brain of rocky mountain elk with chronic wasting disease. | we report here the electron microscopic findings in brain of rocky mountain elk with chronic wasting disease (cdw), a progressive and fatal neurological disorder of wild ruminants characterized neuropathologically by intraneuronal vacuolation, spongiform change of the neuropil and astrocytic hypertrophy and hyperplasia. ultrastructural findings included membrane-bound vacuoles in neuronal elements, increased number of glial filaments, dystrophic neurites, numerous neuritic plaques, hirano bodies ... | 1994 | 7982031 |
| effect of changing daylength on the diurnal pattern of intake and feeding behaviour in penned red deer (cervus elaphus). | voluntary food intakes by 12 housed red deer hinds were recorded during six 2-week periods between april and november. diurnal patterns of intake and feeding activity were measured by weighing food at either 5-min (april, may and june) or 1-min intervals (july, september and november). at each time of the year, mean rates of food intake, amount of feeding activity and frequency of feeding bouts were significantly greater during periods of daylight than during darkness. food intake rate and feedi ... | 1994 | 7979338 |
| ligands for eph-related receptor tyrosine kinases that require membrane attachment or clustering for activity. | the eph-related transmembrane tyrosine kinases constitute the largest known family of receptor-like tyrosine kinases, with many members displaying specific patterns of expression in the developing and adult nervous system. a family of cell surface-bound ligands exhibiting distinct, but overlapping, specificities for these eph-related kinases was identified. these ligands were unable to act as conventional soluble factors. however, they did function when presented in membrane-bound form, suggesti ... | 1994 | 7973638 |
| the genomes of the animal papillomaviruses european elk papillomavirus, deer papillomavirus, and reindeer papillomavirus contain a novel transforming gene (e9) near the early polyadenylation site. | we report that the genomes of reindeer papillomavirus (rpv), european elk papillomavirus (eepv), and deer papillomavirus (dpv) contain a short conserved translational open reading frame (orf), e9, which is located between the e5 orf and the early polyadenylation site. in rpv, dpv, and eepv, e9 orfs have the potential to encode extremely hydrophobic polypeptides of approximately 40 amino acids. in mouse c127 cells transformed by eepv and rpv, there exists a unique, abundant mrna species of approx ... | 1994 | 7966628 |
| ras/map kinase-dependent and -independent signaling pathways target distinct ternary complex factors. | transcriptional activation of the immediate early genes c-fos and egr-1 by extracellular signals appears to be mediated by ternary complex factors (tcfs). in bac-1 macrophages, growth factor stimulation leads to the retardation of protein-dna complexes containing distinct tcfs. one tcf is recognized by elk-1 antisera, whereas the other is immunologically related to sap-1. the appearance and decay of hyperphosphorylated tcf/elk-1-containing complexes after stimulation coincide with the activation ... | 1994 | 7958858 |
| net, a new ets transcription factor that is activated by ras. | ras signaling appears to be mediated in part by transcription factors that belong to the ets gene family. to identify downstream targets for the ras signal transduction pathway, we have used ras-transformed mouse fibroblasts to isolate a new member of the ets gene family, net. net has sequence similarity in three regions with the ets factors elk1 and sap1, which have been implicated in the serum response of the fos promoter. net shares various properties with these proteins, including the abilit ... | 1994 | 7958835 |
| serum-regulated transcription by serum response factor (srf): a novel role for the dna binding domain. | the transcription factors serum response factor (srf) and ternary complex factor (tcf) form a ternary complex at the c-fos serum response element (sre). we show that in nih3t3 cells tcf binding is required for regulated transcription in response to stimulation by phorbol myristate acetate (pma), but not by whole serum. we constructed a novel transcriptionally inactive sre variant whose serum-regulated activity can be partially restored by overexpression of srf in the absence of bound tcf. activa ... | 1994 | 7957108 |
| electron spin resonance assessment of susceptibility of roe deer (capreolus capreolus) and red deer (cervus elaphus) to oilseed rape (brassica napus) poisoning. | ex vivo studies have been carried out on roe and red deer erythrocytes using electron spin resonance spectroscopy. free radical formation in cells challenged with the brassica-derived haemolysin, dimethyldisulphide, was measured using spin trapping techniques. significantly greater amounts of radical were trapped in the roe deer cells which may relate to differences in the antioxidant profile of the two genotypes. results suggest that roe deer have a greater risk of developing oilseed rape poiso ... | 1994 | 7956119 |
| an abattoir study of tuberculosis in a herd of farmed elk. | the purpose of this study was to examine the prevalence and distribution of grossly visible lesions of tuberculosis in a herd of 344 north american elk (cervus elaphus) depopulated during a three-month period in 1991. abattoir inspection detected mycobacterial lesions in 134 (39.8%) of the 337 animals received for slaughter. the prevalence of lesions increased with the age of the animals. lesions were predominantly suppurative rather than caseous, and mineralization was less evident than in tube ... | 1994 | 7954222 |
| lerk-2, a binding protein for the receptor-tyrosine kinase elk, is evolutionarily conserved and expressed in a developmentally regulated pattern. | we have isolated and characterized cdna clones that encode the rat homologue of a binding protein, lerk-2, for the receptor tyrosine kinase, elk. the cdnas contain an open reading frame of 1527 nucleotides capable of encoding a protein 345 amino acid residues in length. the nucleotide sequence of the present clones is > 90% identical to the previously identified human lerk-2 cdna, and the predicted proteins encoded by the rat and human clones are identical at 95% of amino acid residues. recombin ... | 1994 | 7936648 |
| [wegener's granulomatosis]. | wegener's granulomatosis (wg) is a multiorgan disease with a predilection for the upper airways (e: ear, eye, nose, throat) and lower airways (l: lung) and the kidneys (k):elk classification. typical histological features of wg include inflammation of small and medium sized vessels, necrosis and granuloma formation. the histological findings of wg are divided into 4 stages ie, i: degeneration ii: acute inflammation iii: granulation iv: scar. the recognition of the association between c (proteina ... | 1994 | 7933591 |
| bot fly larvae (cephenemyia jellisoni) as a cause of neurologic signs in an elk. | in june 1993, a yearling female elk (cervus elaphus) near john day, oregon (usa) was observed twice over a four week period with signs of neurologic disease including weakness, walking in circles with an uncoordinated gait and disorientation. the elk was shot, and the head and neck were examined grossly for parasites and lesions. thirty-five second and third instar larvae of cephenemyia jellisoni were recovered from an encapsulated space in the nasopharyngeal area dorsal to the soft palate. larv ... | 1994 | 7933300 |
| experimental infections of eimeria wapiti and e. zuernii-like oocysts in rocky mountain elk (cervus elaphus) calves. | four rocky mountain elk (cervus elaphus) 10 to 14 wk of age each were inoculated orally with a mixture of 50,000 sporulated oocysts of an eimeria zuernii-like apicomplexan (70%) and e. wapiti (30%). maximum numbers of oocysts per gram of feces (opg) in each elk ranged from 985 to 15,517, but all calves remained healthy and clinical signs of coccidiosis were not observed. the prepatent period for e. zuernii was 8 days and the patent period approximately 37 days, with a maximum mean (+/- se) recov ... | 1994 | 7933299 |
| culture isolation and partial characterization of a babesia sp. from a north american elk (cervus elaphus). | three north american yearling elk (cervus elaphus) died with clinical symptoms suggestive of babesiosis. babesia sp. organisms similar in morphology to b. odocoilei of white-tailed deer (odocoileus virginianus) were observed in giemsa-stained blood films from one of the elk. continuous cultures of the parasite were established. antiserum raised against the elk babesia sp. isolate was compared to b. odocoilei specific antiserum in an immunofluorescent antibody assay; we found evidence of differen ... | 1994 | 7933298 |
| refined mapping of the human ets-related gene elk-1 to xp11.2-p11.4, distal to the oatl1 region. | the gene for human elk-1, an ets-related transcription factor, has previously been localized to a region that lies on the short arm of chromosome x and that is involved in specific chromosomal translocations associated with synovial sarcoma and renal adenocarcinomas. we have used fluorescence in situ hybridization and a panel of tumor-derived somatic cell hybrids to refine the localization of elk-1, in particular with regard to the rearrangements in these tumors. elk-1 has been assigned to xp11. ... | 1994 | 7927346 |
| involvement of growth factor receptors in the mammalian uvc response. | irradiation of hela cells with short-wavelength ultraviolet light (uvc) induces the modification and activation of the preexisting transcription factors c-fos-c-jun (ap-1) and tcf/elk-1, as well as the protein synthesis independent transcriptional activation of the c-fos and c-jun genes. this response to uvc is mediated via obligatory cytoplasmic signal transduction, involving ras and raf, src, and map kinases. the uvc response is inhibited by prior down-modulation of growth factor receptor sign ... | 1994 | 7923365 |
| binding of an ets-related protein within the dnase i hypersensitive site of the her2/neu promoter in human breast cancer cells. | promoter elements accounting for her2 (c-erbb-2/neu) overexpression were searched for in several human breast cancer cell lines (mda-453, bt-474, zr-75-1, mcf-7) known to express constitutively a 30-fold range in her2 transcripts per gene copy. her2 overexpressing cells showed a single prominent dnase i hypersensitive site near a conserved and hitherto unrecognized ets response element (gaggaa), located 38 bases down-stream from the caat box and directly 5' of the tata box in the human her2 prom ... | 1994 | 7914192 |
| erp, a new member of the ets transcription factor/oncoprotein family: cloning, characterization, and differential expression during b-lymphocyte development. | the ets gene family encodes a group of proteins which function as transcription factors under physiological conditions and, if aberrantly expressed, can cause cellular transformation. we have recently identified two regulatory elements in the murine immunoglobulin heavy-chain (igh) enhancer, pi and microb, which exhibit striking similarity to binding sites for ets-related proteins. to identify ets-related transcriptional regulators expressed in pre-b lymphocytes that may interact with either the ... | 1994 | 7909357 |
| expression and developmental regulation of ehk-1, a neuronal elk-like receptor tyrosine kinase in brain. | protein tyrosine kinases are pivotal in central nervous tissue development and maintenance. here we focus on the expression of ehk-1, a novel elk-related receptor tyrosine kinase. ehk-1 gene expression is observed in the developing and adult central nervous system and is highly regulated throughout development at both the messenger rna and protein levels. three messenger rna transcripts of 8.5, 5.9 and 5.1 kb are detectable in the rat brain and a variety of splice possibilities have been identif ... | 1994 | 7898646 |
| genomic organization and chromosomal localization of mouse eplg2, a gene encoding a binding protein for the receptor tyrosine kinase elk. | the human gene eplg2 (eph ligand-2) encodes a potential ligand for the receptor tyrosine kinase elk. high sequence conservation between the human and the rat cdnas and developmentally regulated expression of the rat gene suggest that the protein encoded by eplg2 plays an important role in mammalian development. to facilitate analysis of the physiological role of the protein, we have cloned and characterized a 24-kb region of mouse genomic dna containing the mouse homologue of eplg2 (eplg2), incl ... | 1994 | 7896266 |
| dehydroepiandrosterone, dehydroepiandrosterone sulphate, and their relation to cortisol in red deer (cervus elaphus). | adrenal androgens, dehydroepiandrosterone, its sulphate and, in comparison, cortisol in serum were determined over two periods in red deer. the hormone levels were determined in hinds farmed from their births, captured in adulthood, and in fawns reared under farm conditions with their mothers or under artificial farm conditions without their mothers. in addition, steroid levels were studied in stags under farm conditions in and after the breeding season. investigation of animals for their potent ... | 1994 | 7894886 |
| characterization of the elk-1 ets dna-binding domain. | the ets domain family of transcription factors is comprised of several important proteins that are involved in controlling key cellular events such as proliferation, differentiation, and development. one such protein, elk-1, regulates the activity of the c-fos promoter in response to extracellular stimuli. elk-1 is representative of a subgroup of ets domain proteins that utilize a bipartite recognition mechanism that is mediated by both protein-dna and protein-protein interactions. in this study ... | 1995 | 7890710 |
| erk phosphorylation potentiates elk-1-mediated ternary complex formation and transactivation. | induction of the human c-fos proto-oncogene by mitogens depends on the formation of a ternary complex by p62tcf with the serum response factor (srf) and the serum response element (sre). we demonstrate that elk-1, a protein closely related to p62tcf in function, is a nuclear target of two members of the map kinase family, erk1 and erk2. phosphorylation of elk-1 increases the yield of ternary complex in vitro. at least five residues in the c-terminal domain of elk-1 are phosphorylated upon growth ... | 1995 | 7889942 |
| effects of unilateral cranial sympathectomy either alone or with sensory nerve sectioning on pedicle growth in red deer (cervus elaphus). | in a previous study (li et al. [1993], j. exp. zool., 267:188-197) sensory nerve sectioning had no effect on the timing of pedicle growth. the aim of the present study was to determine whether sensory nerve sectioning in conjunction with sympathectomy would influence pedicle growth. twelve intact male red deer calves were allocated to treatment before any pedicle growth as follows: 1) unilateral sensory nerve removal (usx, n = 5), 2) unilateral superior cervical ganglionectomy (sgx, n = 4), or 3 ... | 1995 | 7884387 |
| role of steroids in antler growth of red deer stags. | a series of six studies were carried out in red deer stags to test hypotheses concerning the importance of steroid control of velvet antler growth and to investigate mechanisms by which these hormones exert their effects. medroxyprogesterone acetate (mpa) an lh inhibitor administered to stags during hard antler caused premature antler casting, reduced subsequent antler weight and caused a reduction in the lh and testosterone responses to gnrh. in two separate studies blockade of testosterone rec ... | 1995 | 7884386 |
| mapping of the human sap1 (srf accessory protein 1) gene and sap2, a gene encoding a related protein, to chromosomal bands 1q32 and 12q23, respectively. | sap1, sap2, and elk1 form a related subgroup of ets-domain proteins that can form ternary complexes with the transcription factor srf at the c-fos serum response element (sre). sap1 was identified by a genetic screen for proteins interacting with srf expressed in yeast, and sap2 by its homology with sap1; elk1 was previously identified by its homology to the ets domain. cdna probes were used to isolate cosmid and phage clones harboring genes encoding sap1 and sap2. these clones were subsequently ... | 1994 | 7851904 |
| the role of regulated phosphorylation in the biological activity of transcription factors srf and elk-1/sap-1. | the promoters of many genes whose expression is rapidly and transiently increased upon growth factor or mitogen stimulation of susceptible cells harbor a common regulatory element, the serum response element (sre). the transcription factors that interact with the sre of these immediate-early genes are being intensively studied so as to elucidate the signal transduction cascades that link cell surface receptors to the sre, and to determine the mechanisms by which signal-dependent phosphorylation ... | 1994 | 7847828 |
| rapid detection of bovine herpesvirus 1 (bhv 1) using the polymerase chain reaction. | a polymerase chain reaction (pcr) assay based on primers from the viral gi glycoprotein gene detected 3 fg pure bhv-1 dna, 0.1-1.0 tcid50 or a single infected cell. no amplification was observed with dna from bhv-2, bhv-3, bhv-4, ohv-1 or ohv-2. however, a fragment of the correct size was amplified using dna from herpesviruses isolated from reindeer, red deer and goats. the pcr assay was able to detect virus in nasal swabs up to 14 days after experimental infection of cattle and there was a good ... | 1994 | 7839585 |
| strontium-90 in antlers of red deer: an indicator of environmental contamination by strontium-90. | the sampling procedures in connection with a very sensitive analytical method are described. results from different areas in austria are presented and an interpretion of the results is attempted. some findings are in accordance with measurements from other substances, some are not. the differences most probably depend on several factors like soil type, precipitation, migration of strontium-90, concentration of stable strontium and calcium. no significant rise in the concentration could be found ... | 1994 | 7839120 |
| ligands for the receptor tyrosine kinases hek and elk: isolation of cdnas encoding a family of proteins. | hek is a member of the eph subfamily of receptor tyrosine kinases whose members include elk, hek2, sek, eph and eck among others. using a soluble form of hek consisting of the extracellular region of the receptor fused to the fc domain of human igg1 and an expression cloning strategy, we have isolated two different but related cdnas from the human t-lymphoma line hsb-2 that encode ligands for hek. the cdnas encode proteins of 238 and 201 amino acids (44% amino acid identity) that are anchored to ... | 1995 | 7838529 |
| effects of insulin-like growth factor-i (igf-i) and igf-ii on the growth of antler cells in vitro. | the effects of insulin-like growth factors -i and -ii (igf-i and -ii) on the growth of undifferentiated (fibroblast zone) cells from the growing tip of red deer velvet antlers and from cells 1.5 cm distal to the growing tip (cartilage zone) were investigated in primary cell culture. the addition of igf-i or igf-ii to the medium of cultures preincubated in serum-free medium for 24 h increased the rate of [3h]thymidine uptake in a dose-dependent manner in both cell types, with maximal stimulation ... | 1994 | 7836891 |
| the establishment of a hybrid zone between red and sika deer (genus cervus). | japanese sika deer (cervus nippon nippon) were introduced to scotland around 80 years (20 generations) ago. the sika phenotype is expanding its range and hybridizing extensively with native red deer (cervus elaphus) leading to the establishment of a hybrid zone. this zone is currently moving and cannot be considered to be at equilibrium. cervid genotypes and mitochondrial haplotypes were mapped across the sika phenotype range, using diagnostic protein isozymes, microsatellite nuclear dna markers ... | 1994 | 7834107 |
| cells cultured from the growing tip of red deer antler express alkaline phosphatase and proliferate in response to insulin-like growth factor-i. | deer antler growth provides a unique natural model of rapid and complete bone regeneration. in this study, the distal antler tips of male red deer (cervus elaphus) were collected post-mortem during the annual growth period (april-august), and an in vitro system established for the culture of cells from three regions; the inner layer of the perichondrium, the reserve mesenchyme and the cartilage zone. alkaline phosphatase (alp) expression by cultured cells, as demonstrated by enzyme histochemistr ... | 1994 | 7829985 |
| 'double-head' antlers in red deer cervus elaphus ssp. in which the antler cores survived the death of the cortex. | an unusual case of spike antlers in male red deer is described in which the antler core apparently survived the partial mineralization of the cortex in the first rut and then in the next year supported a new, "antleroma-like" growth. on one side of the antler beam a "separation gap" developed between the living core and the dead cortex. on the opposite side a new growth of antler tissue was observed; this was made of spongious bone which in some areas partially resembled peruke-like growth and i ... | 1994 | 7819606 |
| [development of pcr tests for the detection of bovine herpesvirus-1, bovine respiratory syncytial viruses and pestiviruses]. | the development of pcr assays for detection of bhv-1, brsv, bvdv and another pestiviruses is summarized. a polymerase chain reaction assay based on primers selected from the viral gi glycoprotein gene detected 3 fg pure bhv-1 dna, 0.1-1.0 tcid50 or a single infected cell. no amplification was observed with dna from bhv-2, bhv-3, bhv-4, ohv-1 or ohv-2. however, a fragment of the correct size (468 bp) was amplified using dna from herpesviruses isolated from reindeer, red deer and goat. the pcr ass ... | 1994 | 7817501 |
| occupational exposure to mycobacterium bovis infection in deer and elk in ontario. | in late 1991, two herds of deer and elk were depopulated at a slaughtering plant in ontario, followed by processing of infected animals at a rendering plant. we conducted a questionnaire plus tuberculin skin-test survey of 104 exposed slaughtering and rendering plant workers, and government veterinarians and inspectors. overall, 17 participants were skin-test positive, one of 51 initially skin-test negative subjects tested a second time three months later became positive, consistent with the ris ... | 1994 | 7804937 |
| ras-dependent and -independent pathways target the mitogen-activated protein kinase network in macrophages. | mitogen-activated protein kinases (mapks) are activated upon a variety of extracellular stimuli in different cells. in macrophages, colony-stimulating factor 1 (csf-1) stimulates proliferation, while bacterial lipopolysaccharide (lps) inhibits cell growth and causes differentiation and activation. both csf-1 and lps rapidly activate the mapk network and induce the phosphorylation of two distinct ternary complex factors (tcfs), tcf/elk and tcf/sap. csf-1, but not lps, stimulated the formation of ... | 1995 | 7799956 |
| cloning and sequencing of expressed drb genes of the red deer (cervus elaphus) mhc. | the expressed major histocompatibility complex (mhc) class ii drb genes of 50 unrelated deer were examined by reverse transcription polymerase chain reaction, cloning, and sequencing of drb exon 2. deer, like other mammals, have at least one highly polymorphic mhc class ii drb gene. thirty-four different sequences were identified. most of the variation in amino acid composition occurred at positions that have been shown to form the peptide binding site (pbs). eighteen deer-specific substitutions ... | 1995 | 7797262 |
| calcium activates serum response factor-dependent transcription by a ras- and elk-1-independent mechanism that involves a ca2+/calmodulin-dependent kinase. | enhanced levels of cytoplasmic ca2+ due to membrane depolarization with elevated levels of kcl or exposure to the ca2+ ionophore ionomycin stimulate serum response element (sre)-dependent transcription in the pheochromocytoma cell line pc12. by using altered binding specificity mutants of transcription factors that bind to the sre, it was demonstrated that in contrast to treatment with purified growth factors, such as nerve growth factor, the serum response factor (srf), but not elk-1, mediates ... | 1995 | 7791774 |
| a novel mitogen-activated protein kinase phosphatase. structure, expression, and regulation. | mitogen-activated protein (map) kinase lies at the convergence of various extracellular ligand-mediated signaling pathways. it is activated by the dual-specificity kinase, map kinase kinase or mek. map kinase inactivation is mediated by dephosphorylation via specific map kinase phosphatases (mkps). one mkp (mkp-1 (also known as 3ch134, erp, or cl100)) has been reported to be expressed in a wide range of tissues and cells. we report the identification of a second widely expressed mkp, termed mkp- ... | 1995 | 7782322 |
| outbreaks of yersiniosis caused by yersinia pseudotuberculosis in farmed cervids. | yersiniosis, caused by yersinia pseudotuberculosis, was diagnosed in 25 deer submitted to the veterinary diagnostic laboratories of the ontario ministry of agriculture and food from 8 farms in ontario, canada, over the 4-year period of january 1990 to december 1993. the organism was cultured, usually in large numbers, from the intestines and, less frequently, mesenteric lymph nodes and/or the spleen of 13 red deer (cervus elaphus), 6 elk (c. e. canadiensis), 4 fallow deer (dama dama), and 2 red ... | 1995 | 7779969 |
| assignment of the gene (eplg2) encoding a high-affinity binding protein for the receptor tyrosine kinase elk to a 200-kilobasepair region in human chromosome xq12. | 1995 | 7774950 | |
| application of pulsed-field gel electrophoresis for differentiation of vaccine strain rb51 from field isolates of brucella abortus from cattle, bison, and elk. | restriction endonuclease patterns of genomic fragments separated by use of pulsed-field gel electrophoresis were used to differentiate brucella abortus strain rb51, a rifampin-resistant mutant of the standard virulent strain 2308, from other brucellae. results were compared with results obtained by use of standard methods for characterizing brucellae. electrophoretic patterns of the atcc type strains allowed identification of the strains to the level of species. genomic profiles of b abortus bio ... | 1995 | 7771697 |
| a new gene mapping resource: interspecies hybrids between père david's deer (elaphurus davidianus) and red deer (cervus elaphus). | three male f1 hybrids between père david's deer and red deer were mated to red deer to produce 143 backcross calves. the pedigrees are a rare example of a fertile hybrid between evolutionarily divergent species. we examined the use of these families for genetic mapping of evolutionarily conserved (type i) loci by testing for genetic linkage between five species-specific protein variants and 12 conserved dna probes. two probes were homologous, and the remainder syntenic, to the protein coding loc ... | 1995 | 7768446 |
| susceptibility of phagocytes from elk, deer, bighorn sheep, and domestic sheep to pasteurella haemolytica cytotoxins. | alveolar macrophages and peripheral blood neutrophils from elk (cervus elaphus), bighorn sheep (ovis canadensis canadensis), and domestic sheep were exposed to culture supernatants from pasteurella haemolytica isolated from bighorn sheep and domestic sheep. in a second experiment, peripheral blood neutrophils from mule deer (odocoileus hemionus), elk, and bighorn sheep were exposed to culture supernatants from p. haemolytica isolated from elk, bighorn sheep and domestic sheep. alveolar macrophag ... | 1994 | 7760482 |
| parapoxvirus of red deer: evidence for its inclusion as a new member in the genus parapoxvirus. | there are three accepted members of the parapoxvirus genus, orf virus (ov), papular stomatitis virus (psv), and pseudocowpox virus (pcv). ov is maintained in sheep and goats and psv and pcv in cattle. restriction endonuclease profiles of the dna derived from representatives of these established members of the genus were compared with profiles from a parapoxvirus recently isolated from red deer. in no case did the profile of this latter virus (dpv) resemble those generated from the other parapoxv ... | 1995 | 7747456 |
| organic osmolytes in the kidney of domesticated red deer, cervus elaphus. | the cortex, inner and outer medulla, and papilla of kidneys of domestic red deer were analysed. in hydrated animals the urine concentration was found to be 672 +/- 45 mosm.l-1. the medullary and papillary regions of the kidney were rich in the osmolytes betaine, glycerophosphorylcholine (gpc), inositol and sorbitol, all of which showed a steep rise in concentration from cortex to papilla. the kidney was rich in free amino acids, in particular taurine, glutamate (+glutamine), glycine and alanine, ... | 1995 | 7735901 |
| mandibular bone fluoride accumulation in wild red deer (cervus elaphus l.) of known age. | mandibular bone fluoride concentration and its relation to age were studied in a sample of 39 red deer of known age (between 2 and 18 years) from an area not exposed to increased fluoride deposition (harz mountains, germany). bone fluoride level ranged from 208 to 1026 ppm dry weight and was positively correlated with age (r = 0.808, p < 0.001), the rate of skeletal fluoride accumulation being higher in younger individuals. this indicates that during the period of skeletal growth, fluoride uptak ... | 1995 | 7735899 |
| nonamplifying alleles at microsatellite loci: a caution for parentage and population studies. | while genotyping wild red deer (cervus elaphus) at microsatellite loci for paternity assignment, we found three loci (maf65, bovirbp and celjp23) with segregating nonamplifying alleles. nonamplifying alleles were detected through mismatches between known mother-offspring pairs and by significant deviations from hardy-weinberg equilibria. in a wide range of molecular ecology application, and especially in parentage assignment, the possible existence of undetectable alleles must be taken into acco ... | 1995 | 7735527 |
| light and electron microscopy studies on onchocerca jakutensis and o. flexuosa of red deer show different host-parasite interactions. | adult filariae of two intranodular onchocerca species of red deer (cervus elaphus) were examined at the ultrastructural level. in all, 90 nodules of o. flexuosa and 20 nodules of o. jakutensis were studied by histology. o. jakutensis caused cystic and pus-filled nodules in which the female and male worms were motile. female worms possessed a thick cuticle and a well-developed somatic musculature. the basal lamina of the muscular syncytia was connected with the transhypodermal fibers through long ... | 1995 | 7724516 |
| sap1a is a nuclear target of signaling cascades involving erks. | the ets protein sap1a has been shown to interact with the c-fos serum response element upon recruitment by the serum response factor. we demonstrate that sap1a is a nuclear protein stimulating transcription via the c-fos serum response element, and additionally via an ets binding site independently of the serum response factor. however, transactivation has only been observed under conditions leading to the activation of extracellular signal-regulated protein kinases (erks). the transcriptional a ... | 1995 | 7700646 |
| expression of an amphibian homolog of the eph family of receptor tyrosine kinases is developmentally regulated. | in order to study the function of tyrosine kinase receptors during xenopus development, we have isolated xek (xenopus elk-like kinase), a tyrosine kinase receptor, which shows significant homology to rat elk and chicken cek5, members of the eph family. xek exists as a maternally expressed mrna which decreases in expression at the mid blastula transition and reappears at late neurulation in xenopus. xek mrna is expressed at higher levels in the anterior and dorsal regions of embryonic stages 16, ... | 1995 | 7700636 |
| nuclear import of serum response factor (srf) requires a short amino-terminal nuclear localization sequence and is independent of the casein kinase ii phosphorylation site. | serum stimulation of resting cells is mediated at least in part at the transcriptional level by the activation of numerous genes among which c-fos constitutes a model. serum response factor (srf) forms a ternary complex at the c-fos serum response element (sre) with an accessory protein p62tcf/elk-1. both proteins are the targets of multiple phosphorylation events and their role is still unknown in the amino terminus of srf. while the transcriptional activation domain has been mapped between ami ... | 1994 | 7699002 |
| evaluation of lymphocyte stimulation tests for diagnosis of bovine tuberculosis in elk (cervus elaphus). | lymphocyte stimulation tests (lst), performed using 6 antigen preparations, were compared individually and in pairs. the tests were performed on 433 blood samples collected from elk in mycobacterium bovis-infected herds. these elk were killed as part of agriculture and agri-food canada's bovine tuberculosis eradication policy, and mycobacterial culture results were obtained from tissues of each animal. the lst, which had the highest total sum of sensitivity and specificity, was a comparative tes ... | 1995 | 7695145 |
| identification of protein-tyrosine kinase genes preferentially expressed in embryo stomach and gastric cancer. | for identification of the protein-tyrosine kinases that are expressed in embryo stomach and gastric cancer, a 16-day rat embryo stomach and two human gastric cancer cdna expression libraries were screened with an anti-phosphotyrosine antibody. eight cdnas encoding protein-tyrosine kinase were isolated, and northern blot analysis revealed that five out of eight clones were highly expressed in rat embryo stomach, but not in adult rat stomach. from nucleotide sequence analysis, these five cdnas wer ... | 1993 | 7688222 |
| mitochondrial trna(thr) and trna(pro) sequences from three deer species: odocoileus hemionus, cervus elaphus, and cervus nippon. | 1993 | 7688119 | |
| histogenesis of antlerogenic tissues cultivated in diffusion chambers in vivo in red deer (cervus elaphus). | in a previous study we showed that formation of deer pedicle and first antler proceeded through four ossification pattern change stages: intramembranous, transition, pedicle endochondral, and antler endochondral. in the present study antlerogenic tissues (antlerogenic periosteum, apical periosteum/perichondrium, and apical perichondrial of pedicle and antler) taken from four developmental stages were cultivated in diffusion chambers in vivo as autografts for 42-68 days. the results showed that a ... | 1995 | 7673872 |
| johne's disease in a herd of farmed red deer. | an outbreak of johne's disease in a herd of farmed red deer was studied for four years. serological, histopathological and cultural techniques were used to monitor the progress of the disease, and delayed type hypersensitivity skin tests were also applied. the results of the serological tests showed that they were poor predictors of future clinical cases and did not consistently identify animals harbouring mycobacteria. the histopathological methods provided a sensitive and specific means of con ... | 1995 | 7661952 |
| relationship between fluoride content in bones and the age in european elk (alces alces l.). | the relation between fluoride content in bones (jaws) and the age of elks living in poland in areas of relatively low pollution by industrial emissions was studied. multiple regression analysis was performed by making use of 11 mathematical models. the relationship between fluoride content in bones and the animals age is best described by square root and linear models. | 1995 | 7656178 |
| protein synthesis inhibitors reveal differential regulation of mitogen-activated protein kinase and stress-activated protein kinase pathways that converge on elk-1. | inhibitors of protein synthesis, such as anisomycin and cycloheximide, lead to superinduction of immediate-early genes. we demonstrate that these two drugs activate intracellular signaling pathways involving both the mitogen-activated protein kinase (mapk) and stress-activated protein kinase (sapk) cascades. the activation of either pathway correlates with phosphorylation of the c-fos regulatory transcription factor elk-1. in hela cells, anisomycin stabilizes c-fos mrna when protein synthesis is ... | 1995 | 7651411 |
| elf-2, a new member of the eph ligand family, is segmentally expressed in mouse embryos in the region of the hindbrain and newly forming somites. | the eph receptors are the largest known family of receptor tyrosine kinases and are notable for distinctive expression patterns in the nervous system and in early vertebrate development. however, all were identified as orphan receptors, and only recently have there been descriptions of a corresponding family of ligands. we describe here a new member of the eph ligand family, designated elf-2 (eph ligand family 2). the cdna sequence for mouse elf-2 indicates that it is a transmembrane ligand. it ... | 1995 | 7651410 |
| evolution of protamine p1 genes in mammals. | protamine p1 genes have been sequenced following pcr amplification from 11 mammals representing five major mammalian orders: rodentia (rat and guinea pig), carnivora (cat and bear), proboscidea (elephant), perissodactyla (horse), and artiodactyla (camel, deer, elk, moose, and gazelle). the predicted amino acid sequence for these genes together with previously reported sequences results in a data set of 25 different p1 genes and 30 different p1 amino acid sequences. the alignment of all these seq ... | 1995 | 7643410 |
| the spatial distribution of borrelia burgdorferi-infected ixodes ricinus in the connemara region of county galway, ireland. | studies were carried out in the connemara area of county galway in the west of ireland in order to determine the abundance and distribution of the tick, ixodes ricinus and the prevalence of its infection with borrelia burgdorferi. the tick was very abundant locally, in particular when associated with cattle, sheep and enclosed red deer. large numbers of ticks not only occurred on the pastures, but also on adjacent roadside verges. no infections with b. burgdorferi could be demonstrated when nymp ... | 1995 | 7634971 |
| dna bending in the ternary nucleoprotein complex at the c-fos promoter. | transcriptional induction of the c-fos proto-oncogene in response to serum growth factors is mediated in part by a ternary complex that forms on the serum response element (sre) within its promoter. this complex consists of elk-1, serum response factor (srf) and the sre. elk-1 is phosphorylated by map kinase, which correlates with the induction of c-fos transcription. in this study we have investigated the protein-induced dna bending which occurs during the formation and post-translational modif ... | 1995 | 7630721 |
| influence of prenatal photoperiod on postnatal plasma concentrations of progesterone and prolactin in female red deer (cervus elaphus) reared in constant equatorial photoperiod. | prenatal photoperiod influences postnatal prolactin secretion and the timing of reproductive development in male red deer reared from birth in a constant equatorial photoperiod (12:12 light:dark). the present trial investigated whether a similar phenomenon occurs in female red deer. female deer whose mothers had been exposed for the last 14 weeks of gestation to long (group l, 18:6 light:dark) or short day length (group s, 6:18 light:dark) were kept from birth in constant equatorial day length w ... | 1995 | 7629694 |
| gonadotropin-releasing hormone analog-induced patterns of luteinizing hormone secretion in female wapiti (cervus elaphus nelsoni) during the breeding season, anestrus, and pregnancy. | we conducted two studies to determine the pattern of gnrh analog-induced lh secretion in adult female wapiti during the breeding season, anestrus, and pregnancy. in the first study, we measured lh secretion during the breeding season and anestrus in five females challenged with each of five doses of gnrh analog (0.3, 1, 3, 10, and 30 micrograms/50 kg bw). in the second study, lh response was determined in six pregnant females treated with six doses of gnrh analog (0.5, 1, 2, 4, 8, and 16 microgr ... | 1995 | 7626720 |
| susceptibility of mule deer (odocoileus hemionus) and two species of north american molluscs to elaphostrongylus cervi (nematoda: metastrongyloidea). | an experimental study was done to determine whether elaphostrongylus cervi can be transmitted to common intermediate and definitive hosts indigenous to north america. first-stage larvae of e. cervi obtained from red deer (cervus elaphus elaphus) in new zealand developed to the infective third stage in snails (triodopis multilineata) and slugs (deroceros reticulatum). two mule deer (odocoileus hemionus) were inoculated orally with 102 or 406 third-stage larvae. one animal developed a patent infec ... | 1995 | 7623202 |