Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| ventriculostomy for removal of multiple foreign bodies in an ostrich. | 1986 | 3505946 | |
| [phylogeny of neurohypophyseal hormones in birds: microidentification of mesotocin and vasotocin in the ostrich (struthio camelus)]. | ostrich (struthio camelus) neurohypophysial hormones have been isolated from 5 freeze-dried posterior pituitary glands. purification has involved three steps: a first molecular sieving on sephadex g-75 for eliminating proteins, a second molecular sieving on bio-gel p4 for separating the two active principles and a high pressure reverse-phase liquid chromatography (hplc) on nova-pak c 18 with an 10 mm acetate-acetonitrile gradient for isolating each hormone. the active peptides have been identifi ... | 1986 | 2943369 |
| biochemistry of fern spore germination: protease activity in ostrich fern spores. | protease activities were detected in quiescent and germinating spores of the ostrich fern (matteuccia struthiopteris [l.] todaro). peak endopeptidase, aminopeptidase, and carboxypeptidase activities were detected 12 to 24 hours after spores began imbibing under light. there was a correlation between activities of proteases, the onset of a decline in levels of soluble protein, and an increase in levels of free amino acids. the earliest visible event of spore germination, breakage of the spore coa ... | 1986 | 16664754 |
| biochemistry of fern spore germination: globulin storage proteins in matteuccia struthiopteris l. | two globulin storage proteins have been identified in spores of the ostrich fern, matteuccia struthiopteris (l.) todaro. the two proteins comprise a significant amount of the total spore protein, are predominantly salt-soluble, and can be extracted by other solvents to a limited extent. the large 11.3 svedberg unit (s) globulin is composed of five polypeptides with molecular weights of 21,000, 22,000, 24,000, 28,000 and 30,000. each polypeptide has several isoelectric point (pi) variants between ... | 1987 | 16665699 |
| beta-endorphin: peripheral opioid activity of homologues from six species. | the peripheral opioid activity of six homologous beta-endorphins (beta-eps) were assayed on the guinea pig ileum and the vas deferens of the mouse, the rat and the rabbit. in the guinea pig ileum assay, human beta-ep (beta h-ep) was less potent than camel, turkey, and ostrich beta-eps, of the same potency as equine beta-ep and more active than des-acetyl salmon beta-ep. in the rat vas deferens, mammalian beta-eps showed higher activity than those from the bird and the fish, whereas in the mouse ... | 1987 | 2954920 |
| complete amino acid sequence of a vldv-type neurophysin from ostrich differs markedly from known mammalian neurophysins. | the neurohypophyseal hormones vasopressin and oxytocin are known to be synthesized in eutherian mammals as part of larger precursors containing either msel- or vldv-neurophysins. a neurophysin has been isolated from ostrich neurohypophyses and shown by partial amino acid sequence determination to be related to mammalian vldv-neurophysin. the present report describes the complete amino acid sequence of this ostrich neurophysin containing 93 residues. this amino acid sequence, the first reported i ... | 1987 | 3436699 |
| the isolation and partial characterization of trypsin from the pancreas of the ostrich struthio camelus. | cationic trypsin was isolated and purified from the pancreas of the ostrich (struthio camelus) by affinity chromatography on a trasylol-sepharose column. external activation of trypsinogen was required before trypsin could be isolated. the final preparation was homogeneous by sds-page and by sedimentation equilibrium centrifugation studies, resulting in mr values of 24,547 and 22,091, respectively. the mmin value obtained from amino acid analysis was 22,450. a mean sedimentation coefficient of 2 ... | 1987 | 3581798 |
| field and laboratory investigation of crimean-congo haemorrhagic fever virus (nairovirus, family bunyaviridae) infection in birds. | in november 1984 a case of crimean-congo haemorrhagic fever (cchf) occurred in a worker who became ill after slaughtering ostriches (struthio camelus) on a farm near oudtshoorn in the cape province of south africa. the diagnosis was confirmed by isolation of cchf virus from the patient's serum and by demonstration of a specific antibody response. it was suspected that infection was acquired either by contact with ostrich blood or by inadvertently crushing infected hyalomma ticks while skinning o ... | 1987 | 3140434 |
| ovomucoid third domains from 100 avian species: isolation, sequences, and hypervariability of enzyme-inhibitor contact residues. | ovomucoids were isolated from egg whites of 100 avian species and subjected to limited proteolysis. from each an intact, connecting peptide extended third domain was isolated and purified. these were entirely sequenced by single, continuous runs in a sequencer. of the 106 sequences we report (five polymorphisms and chicken from the preceding paper [kato, i., schrode, j., kohr, w. j., & laskowski, m., jr. (1986) biochemistry (preceding paper in this issue)]), 65 are unique. in all cases except os ... | 1987 | 3828298 |
| nest microclimate and incubation water loss of eggs of the african ostrich (struthio camelus var. domesticus). | the microclimate of the nest and the rates of egg water loss were studied at weekly intervals throughout the 41-day incubation period in six ostrich nests. overall mean values were a central egg temperature of 34.9 degrees c associated with saturation vapor pressure of 42 torr, a mean nest vapor pressure of 11 torr, and an ambient vapor pressure of 8.4 torr. the egg water loss increased from 4,000 to 4,800 mg x day-1 over the incubation period, and the total water loss was equal to 13.2% of the ... | 1987 | 3598495 |
| silence as resistance to medical intervention. | a group of 47 individuals initially silent about their physical symptoms and/or dysfunction were studied after they finally had come to medical attention. they were then interviewed, using the associative anamnesis technique, to evaluate the psychologic aspects of their silence. it was found to be a key element in the defensive complex directed against intense neurotic feelings activated by the patient's current physical condition. the tendency toward silence appeared to have been reinforced by ... | 1987 | 3609732 |
| purification and primary structure of ostrich pancreatic polypeptide. | pancreatic polypeptide has been isolated from ostrich pancreas by gel filtration, ion exchange chromatography and high pressure liquid chromatography. the ostrich peptide contains 36 amino acids and has an amino acid composition similar to pancreatic polypeptide of other avian species. the primary structure of ostrich pancreatic polypeptide differs from that of the chicken peptide only at residues 3 and 18 where the ostrich peptide contains an alanine and a valine residue compared to the serine ... | 1987 | 3623804 |
| identification of gln8-gnrh and his5,trp7,tyr8-gnrh in the hypothalamus and extrahypothalamic brain of the ostrich (struthio camelus). | gonadotropin-releasing hormone (gnrh) molecular forms were studied in extracts of ostrich hypothalamus and extrahypothalamic brain using high performance liquid chromatography, radioimmunoassay with region-specific antisera and assessment of luteinizing hormone (lh)-releasing activity using chicken dispersed pituitary cells. two molecular forms of gnrh with chromatographic, immunological and biological properties identical to those of gln8-gnrh and his5,trp7,tyr8-gnrh were demonstrated in both t ... | 1987 | 3554166 |
| diffusive resistance of avian eggshell pores. | resistance to gas diffusion through the avian eggshell resides in the microscopic pores which penetrate the shell. we calculated the resistance to water vapor diffusion of individual pores in the shells of 23 species of avian eggs, based on measurements of pore dimensions taken from drawings of 321 pore casts published by tyler (1962, 1964, 1965) and tyler and simkiss (1959). diffusive resistances were calculated from fick's first law, using a 100-segment model of each pore. in addition, we adde ... | 1988 | 3222566 |
| a fern spore storage protein is genetically similar to the 1.7 s seed storage protein of brassica napus. | the ostrich fern, matteuccia struthiopteris l., contains two globulin spore storage proteins of 2.2 s and 11.3 s, with physical characteristics similar to those of seed storage proteins of brassica napus (rapeseed) and raphanus sativus (radish). by the use of a cloned cdna that encodes the 1.7 s b. napus storage protein (napin), gene sequences that hybridized with napin were detected in fern nuclear dna, and a 900-nucleotide homologous mrna was detected in developing spores. in vitro translation ... | 1988 | 3242496 |
| marketing medicine. | medical etiquette has always discouraged advertising. indeed, the profession as a whole has tended to view the idea of marketing medicine as at best, a trifle infra dig. maintenance of this attitude has been helped by an ostrich like approach to the realities of private practice, and to the activities of drug companies, which have contributed significantly to our therapeutic abilities. the moves to corporatise and privatise institutions have raised the level of concern of our new zealand medical ... | 1988 | 3380428 |
| purification and primary structure of ostrich insulin. | insulin has been isolated from ostrich pancreas by a procedure of acid ethanol extraction, adsorption onto sp-sephadex, gel permeation chromatography and hplc. the primary structure of the ostrich insulin is identical to that reported for the chicken hormone. the isoelectric point as determined by polyacrylamide gel isoelectric focusing was significantly higher than that of the bovine hormone. | 1988 | 3045031 |
| pox in ostriches. | clinical signs suggesting pox were observed in a flock of ostrich chicks (struthio camelus), 10 to 60 days old. the disease was confirmed by isolation of the agent from affected ostriches and reproduction of typical pox lesions in turkeys. further infection of young ostriches was prevented by vaccination with fowl pox vaccine. | 1988 | 18766730 |
| newcastle disease in ostriches (struthio camelus): field case and experimental infection. | an outbreak of newcastle disease (nd) in ostriches is described. in a flock aged 5 to 9 months of age 13 out of 46 ostriches died, whereas a neighbouring flock of 11-month-old birds remained unaffected. the main clinical signs were nervous. hemagglutination inhibition (hi) titres reached log(2) 8. the virus was isolated from the brain only. experimental infection of five, 3-month-old ostriches with virulent nd virus caused the death of three birds within 5 to 10 d. another had to be killed after ... | 1989 | 18679855 |
| haematological parameters of the otrich (struthio camelus). | haematological reference values according to age and sex, were obtained from healthy ostriches (struthio camelus) held under intensive conditions. erythrocytic parameters and indices demonstrated an age-related trend: the packed cell volume, haemoglobin concentration and erythrocyte count were lowest in ostriches of 1 to 3 months of age. the mean corpuscular volume increased with age until adulthood. no sex-linked differences were demonstrated in regard to the erythrocytic parameters. leukocyte ... | 1989 | 18679863 |
| anatomy of the avian cecum. | the gross anatomy of the avian ceca is reviewed. in most birds, right and left ceca arise laterally or ventrolaterally at the junction of the small and large intestines. in a few species, the ceca open into the rectum ventrally or dorsally. in many herons and bitterns, only one cecum is present, and in the secretary bird there are two pairs of ceca. ceca are absent in woodpeckers, hummingbirds, swifts, kingfishers, pigeons, mousebirds, cuckoos, and parrots. ceca may be classified according to le ... | 1989 | 2575123 |
| ostrich msel-neurophysin belongs to the class of two-domain "big" neurophysin as indicated by complete amino acid sequence of the neurophysin/copeptin. | mammalian neurohypophyseal hormones, oxytocin and vasopressin, are known to be synthesized as part of two larger precursors containing, respectively, a vldv-neurophysin and a msel-neurophysin together with its associated glycopeptide. starting from ostrich neurohypophyses, a "big" neurophysin was isolated and chemically characterized. following sequence determination of the cnbr-derived fragments and of peptides obtained from trypsin and v8-protease digestion of the oxidized protein, this "big" ... | 1989 | 2722398 |
| the isolation and partial characterization of chymotrypsinogen from the pancreas of the ostrich (struthio camelus). | 1. cationic chymotrypsinogen from the pancreas of the ostrich was purified to homogeneity by sulfuric acid extraction of pancrei, (nh4)2so4 fractionation and sp-sephadex c-50 and sephadex g-100 chromatography. 2. the final preparation was homogeneous when subjected to sds-page, isoelectric focusing and sedimentation equilibrium centrifugation. the mmin value obtained from amino acid analysis was 25,572 da. a mean sedimentation coefficient of 2.575 s was obtained by sedimentation velocity centrif ... | 1989 | 2753201 |
| reference blood chemical values in ostriches (struthio camelus). | reference blood chemical values were determined for 65 male and 61 female ostriches (struthio camelus) 1 month to 72 months of age. plasma values of glucose, total protein, triglycerides, cholesterol, uric acid, urea, bilirubin, creatinine, osmolality, electrolytes, and enzyme activity were determined. in general, differences in various values appeared mainly among age groups and less so between sexes. older ostriches had lower plasma glucose values and enzyme activity than did younger ostriches ... | 1989 | 2802331 |
| effects of diverse mammalian and nonmammalian gonadotropins in a rat granulosa cell bioassay for follicle-stimulating hormone. | the biopotencies of pituitary gonadotropins purified from a marsupial (kangaroo), two avian (ostrich and turkey), a reptile (turtle), an amphibian (bullfrog), and two fish (sturgeon and teleost) species were examined using an in vitro rat granulosa cell bioassay for follicle-stimulating hormone (fsh). treatment of cultured granulosa cells with increasing concentrations of gonadotropin preparations from these species resulted in dose-dependent increases in estrogen production from negligible amou ... | 1989 | 2494099 |
| ostrich fructose 1,6-bisphosphatase: distribution of activity and purification of the liver isoenzyme. | 1. fructose 1,6-bisphosphatase was assayed in crude extracts of physiologically important organs and tissues in the ostrich. 2. highest activity was found in liver and lowest in brain tissue. 3. no activity was detected in the heart, gizzard or adrenals. 4. the enzyme was purified in homogeneous, apparently undegraded form from liver utilizing blue dextran-sepharose affinity chromatography. 5. the enzyme is similar to mammalian fructose 1,6-bisphosphatase in many respects including its indispens ... | 1989 | 2551754 |
| saskatchewan. conjunctivitis associated with staphylococcus hyicus subsp. hyicus in an ostrich. | 1989 | 17423428 | |
| dating pleistocene archeological sites by protein diagenesis in ostrich eggshell. | eggshells of the african ostrich (struthio camelus), ubiquitous in archeological sites in africa, have been shown by laboratory simulation experiments to retain their indigenous organic matrix residues during diagenesis far better than any other calcified tissue yet studied. the rate of l-isoleucine epimerization to d-alloisoleucine follows reversible first-order kinetics and has been calibrated for local temperature effects and used to estimate the age range of stratified archeological sites. a ... | 1990 | 17843317 |
| chemical immobilisation in ostriches (struthio camelus) using etorphine hydrochloride. | 1990 | 2288063 | |
| tradimus. the ostrich approach. | 1990 | 2116860 | |
| the ostrich pituitary contains a major peptide homologous to mammalian chromogranin a(1-76). | a major peptide related to the nh2-terminal fragment (position 1 to 76) of mammalian chromogranin a was isolated from ostrich adenohypophyses following acid-acetone extraction. the complete amino acid sequence of the homogenous peptide was deduced following automatic edman degradation of the native peptide as well as of cnbr-, tryptic- and lysobacter-derived peptides. the 76 amino acid sequence is strikingly homologous to bovine (80.3% sequence identity), porcine (79.0%), human (79.0%) and rat ( ... | 1990 | 2188233 |
| the sexual response as exercise. a brief review and theoretical proposal. | the sexual response is a form of exercise which has strong biological and evolutionary components. few studies have focused upon sexual behaviour as exercise and the reasons for this are considered. current information and leads for future study come from animal research. some historical precursors to modern sex researchers did more to mislead than to advance knowledge but kinsey and masters & johnson set the stage for modern knowledge and applications. there are parallels between the orgasmic r ... | 1990 | 2192423 |
| partial amino acid sequence of osteocalcin from an extinct species of ratite bird. | osteocalcin the major gamma carboxyglutamic acid containing protein of vertebrate bone has been purified from the bones of a specimen of pachyornis elephantopus, a species of the extinct class of new zealand ratite birds, the moas. the sequence of the n-terminal region of moa osteocalcin was determined using gas phase n-terminal sequencing. the n-terminal sequences of the ostrich and rhea osteocalcins were also determined. alignment of the n-terminal sequence of osteocalcin from the extinct moa ... | 1990 | 2222494 |
| the antigenic structure of the human glycoprotein hormone alpha-subunit: ii. cross-species comparisons. | eight monoclonal antibodies, specific for the glycoprotein hormone alpha-subunit, were raised against human free alpha-subunit, human fsh, or human cg. all of these antihuman monoclonal antibodies were tested for cross-reactivity with alpha-subunits derived from bovine, porcine, equine, bull frog, sea turtle, turkey, and ostrich glycoprotein hormones. all showed cross-reactivity with affinities ranging from 10(-4) to 10(-8) depending upon the antibody and the species of alpha-subunit. cyanogen b ... | 1990 | 1701134 |
| characterization of matteuccin, the 2.2s storage protein of the ostrich fern. evolutionary relationship to angiosperm seed storage proteins. | the 2.2s spore storage protein (matteuccin) of the ostrich fern, matteuccia struthiopteris, has been isolated and characterized. it is a small basic protein consisting of two disulfide-linked polypeptides with approximate molecular masses of 3.0 kda and 8.0 kda. at least four different isoforms exist where two of the forms differ from the other by having a slightly smaller heavy chain. amino acid analysis reveals that the 2.2s protein is rich in arginine. almost complete amino acid sequence info ... | 1990 | 2401286 |
| a light microscopic and immunocytochemical study of the gastrointestinal tract of the ostrich (struthio camelus l.). | although the histological features and endocrine cells of the gastro-intestinal tract of the chicken have been well studied, little is known about these features of the gut of the ostrich. the present study was undertaken to elucidate the histology and peptide-storing endocrine cells of the ostrich. as a rule the histological features of the gastro-intestinal tract of the ostrich corresponded to that of the fowl. however, certain differences were observed. the superficial proventricular glands w ... | 1990 | 2338997 |
| effect of water restriction on renal function in ostriches (struthio camelus). | the production of a white urine by ostriches can be indicative of illness or water deprivation. a metabolic renal study was carried out by dehydrating young, healthy ostriches for 2 days, the period during which urine was still excreted. it was found that the normally copious colourless urine changed to a thick, white excretion after 2 days dehydration and no fluid was excreted after 3 days. from the blood and urine analyses it is concluded that the ostrich conserves body water by an excellent r ... | 1990 | 18679946 |
| proventriculotomy to relieve foreign body impaction in ostriches. | a study was conducted to identify the clinical signs associated with impaction of the proventriculus in ostriches, to identify diagnostic aids, and to develop a surgical procedure for management of the disorder. clinical signs indicating the need for surgical intervention included chronic inappetance, a change in fecal consistency or production, dehydration, weight loss, and failure to respond to laxatives. diagnosis of impacted proventriculus was by abdominal radiography and external palpation. ... | 1991 | 1833364 |
| premature ventricular contractions and apparent hypertension during anesthesia in an ostrich. | premature ventricular contractions and apparent hypertension were seen in an adult ostrich anesthetized with isoflurane. the ostrich had septic joints and was anesthetized to allow joint lavage. the premature ventricular contractions occurred at a rate of 1 to 2/min, with a brief period of 12 to 15/min, and were not treated with any antiarrhythmic drugs. normal blood pressures for awake or anesthetized adult ostriches are not readily available, but blood pressures in this bird were higher than i ... | 1991 | 1714891 |
| [spongiform encephalopathy in a red-necked ostrich (struthio camelus)]. | the paper describes anamnestic, macroscopic and microscopic findings in a female ostrich (struthio camelus), euthanatized because of central nervous and locomotion disorders. systemic arteriosclerotic lesions were combined with adiposis and signs of spongiform encephalopathy, localized in the brain stem and the medulla oblongata. aetiopathogenesis of the disease remains unknown. differential diagnosis is discussed and the disease compared to similar findings in mammals which suffered from bse/sc ... | 1991 | 1887441 |
| spermatozoa and relationships in palaeognath birds. | in this paper the authors describe the ultrastructure of the mature spermatozoon and the spermatid in struthio camelus and dromaius novaehollandiae. the first species is characterized by a rod-like perforatorium within an endonuclear canal in the anterior third of the nucleus, while the second is characterized by an extremely reduced completely extranuclear perforatorium. other differences are in the sperm dimensions, the number of mitochondria and the length of the axonemal accessory fibers. co ... | 1991 | 1912945 |
| anasarca and myopathy in ostrich chicks. | twenty ostrich chicks that died at, or within, 1 week after hatching were examined from 7 farms with poor (43 to 75%) hatchability. all chicks had anasarca and 15 had mild, generalised, acute degenerative changes in the complexus and pelvic limb muscles. one had fibrinoid degeneration of arterioles. biochemical examinations produced no evidence of deficiencies of selenium, vitamin a or vitamin e. the syndrome was related to high relative humidity during incubation. malpositioning also was a caus ... | 1991 | 1929991 |
| purification and primary structure of glucagon from ostrich pancreas splenic lobes. | glucagon is a highly conserved polypeptide hormone which appears to play a more important role in regulation of glycaemia in birds than insulin. ostrich glucagon was isolated and purified from ostrich pancreas splenic lobes using an adapted acid ethanol extraction procedure, gel filtration, ion exchanges, and hplc steps. the purified glucagon fraction appeared to contain small quantities of a more acidic contaminant (polyacrylamide gel isoelectric focussing, page) but appeared homogeneous on sds ... | 1991 | 1938110 |
| ostrich crystallins. structural characterization of delta-crystallin with enzymic activity. | lens crystallins from the african ostrich (struthio camelus) were isolated and characterized. four crystallin fractions corresponding to alpha-, delta/beta- and beta-crystallins similar to those of duck crystallins were isolated, but epsilon-crystallin was found to be absent. the native molecular masses and subunit structures of the purified fractions were analysed by gel filtration. sds/page and isoelectric focusing, revealing various extents of heterogeneity in each orthologous crystallin clas ... | 1991 | 1991029 |
| exotic ectoparasites of ostriches recently imported into the united states. | eleven species of ectoparasitic arthropods were collected and identified from ostriches (struthio camelus) recently imported into the united states from africa and europe. four of these species are reported from ostriches for the first time. the parasites included adult hippoboscid flies (struthiobosca struthionis) and 10 species of adult ixodid ticks (amblyomma gemma, a. lepidum, a. variegatum, haemaphysalis punctata, hyalomma albiparmatum, h. luscitanicum, h. marginatum rufipes, h. truncatum, ... | 1991 | 2023323 |
| hematologic and blood chemistry values of the masai ostrich (struthio camelus). | normal mean values for hematocrit, hemoglobin concentration, erythrocyte and leukocyte counts, hematimetric indices, erythrocyte dimensions, glucose, urea, uric acid, cholesterol, creatinine, total bilirubin, serum aspartate aminotransferase, serum alanine aminotransferase, alkaline phosphatase, creatinine phosphokinase, lactic dehydrogenase, inorganic phosphorus, chloride, total plasma protein, sodium, potassium, calcium, and magnesium were obtained from the blood or plasma of four masai ostric ... | 1991 | 2023325 |
| a preliminary investigation into the immobilising potential of a tiletamine/zolazepam mixture, metomidate, a metomidate and azaperone combination and medetomidine in ostriches (struthio camelus). | ostrich chicks (n = 34) were successfully immobilised with intramuscular injections of a tiletamine/zolazepam mixture at dosages of 5, 10, 15 and 20 mg kg-1; with metomidate at dosages of 15 and 20 mg kg-1 and with a metomidate/azaperone combination at respectively 20 and 6.6 mg kg-1, and 10 and 3.3 mg kg-1. unsatisfactory immobilisation with violent body movements and self traumatisation were observed in an adult ostrich after the intramuscular administration of a tiletamine/zolezepam mixture. ... | 1991 | 1685191 |
| characterization of chicken acth and alpha-msh: the primary sequence of chicken acth is more similar to xenopus acth than to other avian acth. | adrenocorticotropic (acth) and melanocyte stimulating (msh) hormones have been demonstrated in the same cells in the cephalic half of the pars distalis of the chicken pituitary glands in three ways: (i) immunohistochemistry, (ii) radioimmunoassay (ria) using both anti-human or porcine acth and synthetic alpha-msh antibodies, and (iii) isolation and purification, followed by the determination of amino acid compositions of both hormones. the contents of acth and alpha-msh are estimated by ria to b ... | 1991 | 1652532 |
| anesthetic management of ostriches. | we evaluated and characterized several anesthetic induction protocols used to facilitate intubation and anesthetic maintenance with isoflurane in 7 adult ostriches and 1 juvenile ostrich. induction protocols included iv administration of zolazepam/tiletamine, iv administration of diazepam/ketamine with and without xylazine, iv administration of xylazine/ketamine, im administration of carfentanil or xylazine/carfentanil, and mask induction with isoflurane. general anesthesia was maintained with i ... | 1992 | 1624341 |
| the isolation and partial characterization of trypsinogen, pancreatic secretory trypsin inhibitor and multiple forms of chymotrypsinogen and trypsin from the pancreas of the ostrich (struthio camelus). | 1. psti, two chymotrypsinogens and two trypsins were purified to homogeneity by acid extraction, salt fractionation, sp-sephadex c-50 chromatography and rp-hplc. 2. a third chymotrypsinogen, a trypsinogen and another trypsin were purified using an alkaline extraction procedure, followed by trasylol- and benzamidine-sepharose affinity chromatography and hydroxylapatite chromatography. 3. the enzymes differed in amino acid composition as well as in specific activities towards synthetic amidase and ... | 1992 | 1612178 |
| "the policy of the ostrich". 1919. | 1992 | 1555167 | |
| ostrich (struthio camelus) immobilisation using carfentanil and xylazine and reversal with yohimbine and naltrexone. | ostriches (struthio camelus) (n = 20) were immobilised from a helicopter by darting with a total dose of 3 mg carfentanil and 150 mg xylazine. an initial excitement phase was displayed, commencing on average at 2.67 min (s.d. 0.72) after darting, and the average time to recumbency was 4.97 min (s.d. 1.05). the average heart and respiration rates prior to reversal were 121.2 (s.d. 19.96) and 13.7 (s.d. 5.96) min-1 respectively. reversal was achieved by the intravenous injection of yohimbine at ap ... | 1992 | 1491416 |
| plastic surgeon as an ostrich in the surgical treatment of cleft palate. | 1992 | 1584882 | |
| reference serum biochemical values for emus and ostriches. | reference serum biochemical values were determined in blood samples from 15 male, 18 female, and 4 unsexed emus (dromaius novaehollandiae) 1 to 48 months old. serum biochemical values also were obtained for 19 male, 26 female, and 4 unsexed ostriches (struthio camelus) 1 to 60 months old. parametric (mean +/- 2 sd) and non-parametric (fifth to 95th percentile) reference ranges and linear trends as influenced by age were determined for enzyme activities and concentrations of glucose, inorganic ph ... | 1992 | 1456516 |
| binding and spectroscopic properties of ostrich neurophysins. probing the role of residue 35 at the monomer-monomer interface. | binding and spectroscopic properties of ostrich neurophysins were examined with emphasis on the behavior of tyr-35, a residue that provides a potential probe of the monomer-monomer interface and of allosteric interrelationships between this region and the binding site. mesotocin-associated ostrich neurophysin was found to bind oxytocin and related peptides with affinities comparable to the mammalian proteins, but induced a significantly different optical activity in bound peptides than the mamma ... | 1992 | 1428529 |
| isolation and characterization of glycosylated and non-glycosylated prolactins from alligator and crocodile. | two molecular forms of prolactin (prl), glycosylated and non-glycosylated, were isolated from pituitary glands of two reptiles, alligator and crocodile. the reptilian prls were extracted under alkaline conditions from the precipitate obtained after pituitaries were first extracted with 0.25 m sucrose, 1 mm nh4hco3, ph 6.3. purification was performed by ion exchange chromatography on de-52, gel filtration on sephadex g-75 superfine, and reversed phase high performance liquid chromatography. two f ... | 1992 | 1399264 |
| pleistocene geochronology and palaeothermometry from protein diagenesis in ostrich eggshells: implications for the evolution of modern humans. | proteinaceous residues incorporated within the crystal structure of ostrich eggshells (oes) are retained without loss over geological time exceeding 10 million years. degradation of the polypeptides, including hydrolysis to smaller peptide fragments and eventual release of free amino acids, decomposition, and racemization and epimerization occur at regular, predictable rates dependent on ambient temperature. the extent of isoleucine epimerization (aile/ile ratio) in oes follows linear first-orde ... | 1992 | 1357689 |
| deoxygenation-linked association of a tetrameric component of chicken hemoglobin. | deoxygenation-dependent association of hemoglobin tetramers appears to be widespread among amphibians, reptiles, and possibly all or most birds. the evidence for this conclusion depends largely on oxygen equilibria of whole blood which have hill coefficients that reach values as high as 5-7 at 80-90% oxygenation. computer simulation of the sedimentation velocity behavior of the major components a and d of chicken hemoglobin shows that component d but not a self-associates to form dimers of tetra ... | 1992 | 1730642 |
| vertebrate lens alpha-crystallins are modified by o-linked n-acetylglucosamine. | crystallins are structural proteins responsible for establishing the remarkable optical properties of the lens. yet many of these highly conserved proteins are also expressed in nonocular tissues, where they have alternative functions apparently unrelated to their structural role in the lens. here we report that lens alpha-crystallins, some of which function as heat-shock proteins in other tissues, are modified with o-linked n-acetylglucosamine (o-glcnac). an in vitro enzymatic assay that transf ... | 1992 | 1730617 |
| preventing sexually transmitted diseases: effecting behavioural change. | the discouraging results of early efforts to educate the public about sexually transmitted diseases indicated that the goals of std preventive action must be longer term and must change attitudes and behaviour as well as educate. they must also avoid an ostrich mentality about the sexual involvement of young people. this article examines more recent approaches to teaching about sexuality in general and std prevention in particular. | 1992 | 21221351 |
| cruciate ligaments of the avian knee: insight into a complex system. | the avian cruciate ligaments were examined in gallus domesticus, anas platyrhynchos, meleagris gallopavo, and struthio camelus australis. the ligaments proved to be deviated around the intercondylar groove (cranial cruciate) and around the medial femoral condyle (caudal cruciate). four functionally different fiber groups could be differentiated: fibers taut only in maximal extension, fibers taut only in maximal flexion, fibers taut in ranges from an intermediate position to an extreme position, ... | 1992 | 29865604 |
| evolution of the moa and their effect on the new zealand flora. | it is 150 years since sir richard owen announced the former existence of large flightless ostrich-like birds in new zealand based on a fragment of femur presented to him in england. numerous studies of this extinct group of giant birds, now known by the polynesian (plural) name 'moa', have provided much information about their effects on the flora, their recent extinction, and the evolutionary history of new zealand and its endemic biota. significant revision of moa taxonomy and ecology continue ... | 1993 | 21236223 |
| isolation of an influenza a virus from ostriches (struthio camelus). | an influenza a virus of the h7 n1 subtype was isolated from young ostriches which died after developing a syndrome characterized by a green discolouration of the urine, weakness and signs of respiratory distress. mortality varied, depending on the age of the ostriches, the presence of other infectious agents and the amount of stress to which they were exposed. using the haemagglutination inhibition test, an amnestic response was recorded in ostriches which recovered from the disease. pathogenici ... | 1993 | 18670997 |
| the nutcracker and the ostrich. | 1993 | 8123087 | |
| cowdria ruminantium identified in amblyomma gemma using a dna probe pcs20. | amblyomma gemma ticks were collected from wild animals on a 20,000 acre game ranch in a heartwater endemic area in kenya, close to nairobi. a. variegatum is the main vector of heartwater in kenya. e.a. lewis, 1947, in a one sentence report has implicated a. gemma to be a vector of heartwater without giving any details. adult a. gemma were collected from giraffe giraffa camelopardalis, hartebeest alcephalus busephalus, eland taurotragus oryx and ostrich struthio camelus during cropping exercises. ... | 1993 | 8134629 |
| a cryptosporidium sp in an ostrich. | 1993 | 8410943 | |
| postmortem findings of ostriches submitted to the oklahoma animal disease diagnostic laboratory. | a review of 121 ostrich necropsies from the files at the oklahoma animal disease diagnostic laboratory was conducted. the birds ranged in age from unhatched embryos to 4 years; the majority were less than 3 weeks old. the most common cause of death was ostrich chick fading syndrome (ocfs). ocfs is characterized by depression, anorexia, and death 3-5 days after onset of clinical signs in ostriches less than 3 weeks old. escherichia coli and/or klebsiella pneumoniae were isolated from various orga ... | 1993 | 8141745 |
| prolapse of the phallus and cloaca in the ostrich (struthio camelus). | the incidence of cloacal prolapse in ostrich chicks hatched and raised on the oudtshoorn experimental farm during the 1992-1993 breeding season was investigated. the condition which occurred primarily in male chicks, affected 14.65% of the total number of chicks hatched. the mortality rate amongst chicks with cloacal prolapse was very high. although the pathogenesis and aetiology of the condition is unknown, a species of cryptosporidium was present in large numbers in affected cloacas. treatment ... | 1993 | 8176694 |
| the incidence of tibiotarsal rotation in the ostrich (struthio camelus). | abnormal lateral tibiotarsal rotation has been reported as one of many abnormalities affecting the pelvic appendicular skeleton of birds. in this study, lateral rotation of the tibiotarsus affected 89 out of 1,407 ostrich chicks between 2 weeks and 6 months of age raised at the oudtshoorn experimental farm. there was no sexual preference, but the lesion affected the right pelvic limb almost exclusively and very rarely the left limb. pelvic appendicular skeletal abnormalities make a significant c ... | 1993 | 8176695 |
| isolation and primary structure of a novel avian pancreatic polypeptide from five species of eurasian crow. | chicken pancreatic polypeptide is the prototype of the neuropeptide y (npy)/pp superfamily of regulatory peptides. this polypeptide was appended the descriptive term avian, despite the presence of some 8600 extant species of bird. additional primary structures from other avian species, including turkey, goose and ostrich, would suggest that the primary structure of this polypeptide has been highly-conserved during avian evolution. avian pancreatic polypeptides structurally-characterised to date ... | 1993 | 8234905 |
| high mortality associated with megabacteriosis of proventriculus and gizzard in ostrich chicks. | 1993 | 8236692 | |
| isolation of chlamydia spp. from ostriches (struthio camelus) (short report). | post mortem examination of ostrich chicks (struthio camelus) originating from a flock with a high mortality rate is described. the main pathological lesions found, indicated colibacillosis which was further corroborated by the isolation of pure culture e. coli. furthermore chlamydia spp. was isolated for the first time from ostriches. a detailed isolation procedure is presented. the association of colibacillosis with chlamydia and the latency of chlamydia is discussed. | 1993 | 8261920 |
| nonsteroidal anti-inflammatory drugs, ulcers, and histamine2 blockers. the ostrich phenomenon! | 1993 | 8215746 | |
| observations on the commercial production of ostrich (struthio camelus) in the united kingdom: incubation. | two sets of ostrich eggs (60 and 120 eggs) were imported into the united kingdom under class 1 quarantine restrictions. single stage incubation was carried out and the eggs were weighed before and during incubation in order to control weight loss. in the two hatches the weight losses during the incubation of viable eggs were 13.4 per cent and 11.4 per cent, respectively. the development of the eggs was followed by candling and although only dark shadows were observed a pattern could be recognise ... | 1993 | 8337808 |
| observations on the commercial production of ostrich (struthio camelus) in the united kingdom: rearing of chicks. | two sets of ostrich eggs (60 and 120 eggs) were imported into the united kingdom under class 1 quarantine restrictions. the eggs were incubated and observations were made on the growth, survival and sex ratio of the chicks hatched. the chicks decreased in weight for five days after hatching before they began a sustained period of exponential growth. they reached a liveweight of 4 kg five weeks after hatching. female chicks grew significantly faster than male chicks. the survival rates of the chi ... | 1993 | 8351781 |
| a survey of libyostrongylus douglassi on ostrich farms in eastern victoria. | 1993 | 8457182 | |
| diagnosis of enteritis and enterotoxemia due to clostridium difficile in captive ostriches (struthio camelus). | 1993 | 8286467 | |
| ostrich chick survival presents challenge. | 1993 | 8407526 | |
| the production of the ostrich nh2-terminal pomc fragment requires cleavage at a unique signal peptidase site. | the nh2-terminal fragment of ostrich proopiomelanocortin was isolated and purified following acid/acetone extraction. the amino acid sequence was deduced by automatic edman degradation of the native as well as cnbr-, tryptic-, and s. aureus protease-derived peptides. primary structure analysis reveals its close resemblance to other known sequences, especially to amphibian pomc. the usual trp/gln-cys nh2-terminal sequence found in all other homologous sequences, is replaced here by an his-gly-pro ... | 1993 | 8332551 |
| ultrastructure of ostrich (struthio camelus) spermatozoa: i. transmission electron microscopy. | the origin and relationships of the tinamous (order tinamiformes), ratites (order struthioniformes, rheiformes, casuariiformes, apterygiformes) and birds of the order galliformes and anseriformes is the subject of much debate and it has been suggested that the ultrastructural analysis of a wide variety of avian sperm may provide information relevant to this problem. this paper describes the fine structure of ostrich sperm and compares the results with published information for other non-passerin ... | 1993 | 8332322 |
| the spiral fold of the caecum in the ostrich (struthio camelus). | the caecum of the ostrich was observed to contain a fold that spiralled approximately 30 times, transforming the lumen into a long, spiral-shaped cavity. the fold consisted of mucosa, muscularis mucosa and submucosa. the proximal part of the fold also contained a central core of muscle originating from the inner circular muscle layer of the caecal wall. the distal part was expanded to form a 'frill', thereby enlarging the surface area of the fold. blood vessels entered the fold at the mesenteric ... | 1993 | 8300435 |
| a paralytic-like disease of the ostrich (struthio camelus masaicus) associated with clostridium chauvoei infection. | two adult masai ostriches in a zoological collection became recumbent. the birds could not raise the neck or the head, had difficulties in breathing, and died eight and 13 days, respectively, after the first clinical signs appeared. on post mortem examination the heart had a globous appearance accompanied by gelatinous atrophy. the lungs were hyperaemic and oedematic, while the intestines had prominent haemorrhages in their mucosa. the liver and kidney were enlarged, and the former had also necr ... | 1993 | 8465505 |
| effect of oxidative stress on avian erythrocytes. | avian erythrocytes differ from mammalian erythrocytes in being nucleated and oval. in the circulation, chicken cells survive for only 35 days, compared to 120 days for human cells. in humans, red cell oxidation processes, involving methemoglobin formation, have been correlated with cellular aging. this study compared oxidative resistance of two avian red cells (chicken and ostrich) to that of discoid enucleated human cells. reduced glutathione levels (gsh) and methemoglobin were higher in chicke ... | 1993 | 8679516 |
| [an example of practical medicine in al-andalus: abū-l- 'alā' zuhr's kitāb muŷarrabāt al-jawāss (c. 1060-1131)]. | this article reports a preliminary study of abu-l-ala: his life, his works and his significance as a writer, scientist and physician. all existing arab manuscripts on the kitāb muŷarrabāt al-jawāss are cited, and arabic manuscript no. 520 from the bodleian library in oxford is described. finally, the translation is given, and folios 41v., 42r., 52v., 53r., 81v., 82v., 93r., 94v., 97v., 100r. and 100v. reproduced, from the bodleian library manuscript of the kitāb muŷarrabāt al-jawāss. this materi ... | 1993 | 11639595 |
| evidence for cryptosporidial infection as a cause of prolapse of the phallus and cloaca in ostrich chicks (struthio camelus). | cloacas of male ostrich chicks that had suffered prolapse of the phallus and cloaca were compared with cloacas of normal ostrich chicks of both sexes from the same area. heavy infection of the cloacal and bursal tissue with cryptosporidium sp. was present in all the cases of prolapse, while no cryptosporidia were observed in the normal chicks. histopathological lesions as described in cryptosporidial infection in other species were present in the infected cloacas. these included loss of the micr ... | 1994 | 7501359 |
| [ostriches--an agricultural domestic animal?]. | since more than 100 years ostriches have been used as farm animals in south africa. at present there are ca. 200 000 ostriches in 350 farms. well known have been ostrich feathers which had formerly been equally previous (around 1900) as gold. today, however, ostrich meat and leather are much appreciated. since more than 10 years experiments with ostriches have been also carried out in other countries of the world, mainly in hot areas e. g. australia, usa, israel and italy. maybe the african ostr ... | 1994 | 8205959 |
| [ostrich-like policy?]. | 1994 | 8023107 | |
| morphology of blastocystis sp. from domestic birds. | a study of blastocystis sp. from domestic birds was undertaken to determine if morphological differences occurred. fresh faecal material from domestic chickens, ducks and geese and from commercially farmed ostriches was obtained. blastocystis sp. from chickens was morphologically very different from that from the other hosts, having within the nucleus discrete spots of chromatin rather than a crescentic band (ducks and geese) or an elliptical band (ostrich). a thick surface coat surrounded all b ... | 1994 | 8202452 |
| aortic rupture in ostrich associated with copper deficiency. | four cases of aortic rupture in ostrich associated with deficient levels of copper in the liver are presented. the aortic lesions are consistent with vascular lesions described in turkeys and chickens with copper deficiency. | 1994 | 8066971 |
| ostrich fern poisoning--new york and western canada, 1994. | fiddleheads (crosiers) of the ostrich fern (matteuccia struthiopteris) are a seasonal delicacy harvested commercially in the northeastern united states and in coastal provinces of canada. although some common ferns may be poisonous or carcinogenic, this species has been considered to be nontoxic. however, in may 1994, outbreaks of food poisoning were associated with eating raw or lightly cooked fiddlehead ferns in new york and western canada. this report summarizes the investigations of these ou ... | 1994 | 8078456 |
| the isolation and partial characterization of alpha 1-proteinase inhibitor from the serum of the ostrich (struthio camelus). | 1. native and cleaved alpha 1-proteinase inhibitor was purified from ostrich serum using sepharose-blue dextran chromatography, ammonium sulfate precipitation and ion exchange chromatography on deae-toyopearl 650 m at ph 8.8 and 6.5. ostrich alpha 1-pi displayed m(r) values of 68,100 using gradient page and 66,200 using ferguson plots. isoelectric focusing of ostrich alpha 1-pi in the ph range 3-10 revealed pi values of 4.84 and 4.91, and in the ph range 4-6 the characteristic microheterogeneity ... | 1994 | 8063009 |
| ostrich (struthio camelus) carboxypeptidase a: purification, kinetic properties and characterization of the pancreatic enzyme. | 1. carboxypeptidase a beta and carboxypeptidase a tau-type from the pancreas of the ostrich were purified by water extraction of acetone powder, aminobenzylsuccinic acid affinity and hydroxylapatite chromatography. 2. the final preparations were homogeneous when subjected to sds-page and page. the m(r) values obtained from sds-page for cpa beta and cpa tau-type were 34,600 and 34,400, respectively. 3. the effects of inhibitors (1,10 phenanthroline and indole-3-acetic acid), ph and temperature on ... | 1994 | 8013741 |
| maybe a pot watcher, but never an ostrich. | 1994 | 8147415 | |
| aspergillosis in an ostrich. | a 4-month-old sexually intact blue-neck ostrich was examined because of chronic respiratory tract disease and poor performance. the bird was coughing and dyspneic on physical examination. thoracic radiographs were consistent with air sacculitis. bronchoscopy was used to view and to biopsy plaques within the bronchus and lower airways. aspergillus spp was identified in culture and in biopsy specimens examined microscopically. aspergillosis was confirmed on postmortem examination. bronchoscopy may ... | 1994 | 8175476 |
| seasonal plasma levels of luteinizing and steroid hormones in male and female domestic ostriches (struthio camelus). | ostriches are low-latitude birds and can be considered to be seasonal breeders. however, they are also opportunistic in that they can breed all year round. monthly hormonal plasma concentrations were measured in six female and six male domestic ostriches kept at a latitude of 31 degrees 20'n. measurements were made over a year, during which time each female laid an average of 28.7 eggs. egg laying occurred between march and september, with peak numbers in may-june. concentrations of plasma lutei ... | 1994 | 8138115 |
| [comfort behavior of the african ostrich (struthio camelus)]. | comfort behaviour of ostriches exists in care of plumage and sand bathing. both are essential for the animals. 120 animals were observed in this respect. some remarks concern the chances of ostrich production in central europe. care of plumage will be possible here. special devices must be constructed to allow sand bathing of the animals at every season. | 1994 | 7924972 |
| diversity of vertebrate class i alcohol dehydrogenase. mammalian and non-mammalian enzyme functions correlated through the structure of a ratite enzyme. | class i alcohol dehydrogenase has been characterized from ostrich liver in order to evaluate enzyme variability between two independent lines, mammalian forms of class i alcohol dehydrogenase as a group, and a sufficient number of the enzyme from the most recent animal class (aves, birds) as another. between the two enzyme groups, patterns are consistent and mutually similar. this indicates conserved metabolic and catalytic properties of class i alcohol dehydrogenase, suggesting its metabolic ro ... | 1994 | 7925350 |
| centriole development and formation of the flagellum during spermiogenesis in the ostrich (struthio camelus). | the formation and development of the ostrich sperm tail follows the general pattern described for vertebrate sperm but differs in a number of important aspects when compared with other nonpasserine birds. midpiece formation is characterised by the development of a long (3 microns) distal centriole which determines the length of the midpiece. the distal centriole surrounds a pair of microtubules embedded in a core of dense material. a prominent annulus, which remains stationary during spermiogene ... | 1994 | 7961137 |
| an ostrich dinucleotide repeat polymorphism at the vias-os2 locus. | 1994 | 7985858 | |
| ostrich fern poisoning--western canada and new york, 1994. | 1994 | 7994286 |