Publications
Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
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postnatal development of dendrites of relay neurons in the lateral geniculate nucleus of the marmoset (callithrix jacchus): a quantitative golgi study. | dendrites of multipolar relay neurons in the lateral geniculate nucleus of the marmoset (callithrix jacchus), at various ages from birth to adulthood, were studied in rapid golgi preparations. the dendrites were analyzed by means of three-dimensional computer reconstructions and decomposed into intermediate and terminal segments, both of which were further classified according to their centrifugal order. measurements were made of the number of segments per dendrite, the total length of dendrites ... | 1988 | 3129457 |
induction of luteal regression in the marmoset monkey (callithrix jacchus) by a gonadotrophin-releasing hormone antagonist and the effects on subsequent follicular development. | doses of 100 or 200 micrograms of a novel gnrh antagonist ([n-acetyl-d beta na11-d-pcl-phe2-d-phe3-d-arg6-phe7-arg8-d-ala10]nh2 gnrh) (4 animals/dose) were administered on days 10/11 of the luteal phase and induced a marked suppression of circulating bioactive lh and progesterone concentrations within 1 day of treatment (p less than 0.01). thereafter, progesterone concentrations remained low or undetectable until after the next ovulation. similar results were obtained when 200 micrograms antagon ... | 1988 | 3129559 |
identification of the main gestagen metabolite in marmoset (callithrix jacchus) urine by nmr and ms spectroscopy. | hydroxypregnanolone is the most abundant progesterone metabolite in the urine of marmoset monkeys (callithrix jacchus). the substance is excreted as conjugate. the concentration of this steroid may be monitored by high performance, thin layer chromatography and postchromatographic derivatization. hydroxypregnanolone was purified and subsequently identified by nmr spectroscopy and gas chromatography/mass spectroscopy. the exact chemical structure is 5 alpha-pregnane-3 alpha, 7 alpha-diol-20-one. | 1988 | 3130485 |
factors influencing follicle-stimulating hormone-responsive steroidogenesis in marmoset granulosa cells: effects of androgens and the stage of follicular maturity. | preovulatory changes in the steroidogenic function of primate granulosa cells were studied using the cyclic marmoset (callithrix jacchus) as a model. antral follicles (greater than or equal to 0.5 mm diameter) were dissected from mid-late follicular phase ovaries (7 days after prostaglandin-induced luteolysis) and classified by diameter as small (0.5-1.0 mm), medium (1.1-1.9 mm) or large (greater than or equal to 2.0 mm). granulosa cells from follicles in each size category were isolated and poo ... | 1988 | 3131124 |
endogenous n-excretion and minimal protein requirement for maintenance of the common marmoset (callithrix jacchus). | the protein requirement for maintenance of the marmoset callithrix jacchus was investigated by factorial calculation via the n balance technique. six adult male marmosets were fed a protein-free pelleted diet for 22 days. when a low protein diet (6%) was fed in the preperiod, only 7 days were necessary and when fed a higher protein diet (18%) 10 days were necessary to reach a minimum of n excretion during protein depletion. body weight losses averaged 11% and food intake was 21% lower in the pro ... | 1988 | 3131585 |
plasmodium vivax malaria in the common marmoset, callithrix jacchus: adaptation and host response to infection. | infection with plasmodium vivax was established in splenectomized callithrix jacchus marmosets by inoculation of parasitized blood from aotus trivirgatus carrying the vietnam palo-alto line of p. vivax. subsequent blood passage through intact marmosets resulted in higher peak parasitaemias (about 1% of red cells infected) and the loss of stainable schüffner's dots in infected cells. primary infections with the adapted line were patent for 74 days or more, and induced both a substantial antibody ... | 1988 | 3131721 |
effect of antiprogestin zk 98.734 on the ovarian cycle, early pregnancy, and on its binding to progesterone receptors in the myometrium of marmoset callithrix jacchus. | the antiprogestin zk 98.734 (11 beta-(4-dimethylaminophenyl-17 beta-hydroxy-17 alpha-(3-hydroxy-prop-1(z)-enyl-4,9(10)-estradien-3-one) was administered i.m. (5 mg/day) for three consecutive days to two groups of common marmosets. in one group (nonpregnant, n = 6), it was injected during the luteal phase, and to the second group (pregnant, n = 7), it was injected during early pregnancy, on days 24-26 of the mid-cycle estradiol peak. administration of zk 98.734 during the luteal phase caused a sh ... | 1988 | 3132210 |
characterization of colonic cellular glycoconjugates in colitis and cancer-prone tamarins versus colitis and cancer-resistant primates. | differences in colonic secretory glycoconjugates (ie, mucin) between normal and ulcerative colitis-prone patients have been noted. similar differences may occur in a corresponding primate model, the cotton-top tamarin (ctt), saguinus oedipus, a new world monkey which suffers from spontaneous chronic colitis and colon cancer. lectin reagents were used to characterize and compare colonic cell surface, cytoplasmic, and secretory glycoconjugates of 9 clinically healthy cotton-top tamarins, 7 colitis ... | 1988 | 3132857 |
effect of various biological factors on spontaneous marmoset and tamarin colitis. a retrospective histopathologic study. | histological sections of colons from 69 tamarins (46 saguinus oedipus and 23 saguinus fuscicollis illigeri) and 27 marmosets (callithrix jacchus) that died between 1979 and 1984 were examined for colitis. evaluated biological factors were species, age at death, source of animals, manner of death, presence of colon cancer, and time after importation. most normal colons were found in young animals (dead at less than 1 years of age). nearly all (approximately 96%) animals had colitis; 70-80% of mos ... | 1988 | 3134175 |
cellular aspects of pre-ovulatory folliculogenesis in primate ovaries. | according to current concepts of pre-ovulatory folliculogenesis in primate ovaries, each growing follicle has a 'threshold' requirement for stimulation by fsh which must be met if it is to enter the oestrogen-secretory phase of pre-ovulatory development. until recently, our understanding of the intra-follicular mechanisms underlying fsh action on granulosa cells was based largely on information from non-primate laboratory animals, mainly polyovulators such as rats. the present paper describes st ... | 1988 | 3134394 |
social status controls lh secretion and ovulation in female marmoset monkeys (callithrix jacchus). | the suppression of ovulation in subordinate female marmosets was associated with suppressed pituitary lh secretion and reduced pituitary lh response to gonadotrophin-releasing hormone (gnrh). in subordinate females, basal plasma lh concentrations were commonly below 2 iu/l (n = 5) (maximum 10.7 iu/l). plasma oestrogen concentrations were similarly low (maximum 0.62 nmol/l) and plasma progesterone concentrations of below 30 nmol/l confirmed the anovulatory condition. this infertility condition wa ... | 1988 | 3134506 |
a restraint system for the common marmoset (callithrix jacchus). | a method for restraining the marmoset in a primate chair is described. the device is inexpensive to construct, is reliable, and the majority of animals can be habituated to its use. the chair has been used in neurobiological studies employing electrophysiological recordings, with or without concurrent collection of serial blood samples. | 1988 | 3134573 |
births following the transfer of cultured embryos obtained by in vitro and in vivo fertilization in the marmoset monkey (callithrix jacchus). | the aim of this study was to determine whether marmoset monkeys are a suitable primate model for in vitro fertilization (ivf), embryo culture, and transplantation studies. a prostaglandin analogue given in early pregnancy and human chorionic gonadotropin given near the end of the ensuing follicular phase were used for controlling the reproductive cycle, timing oocyte collection, and synchronizing the cycles of oocyte donors and embryo recipients. five embryos obtained by ivf were transferred at ... | 1988 | 3137105 |
effects of acute stress on the patterns of lh secretion in the common marmoset (callithrix jacchus). | stressful stimuli associated with aggressive encounters and low social rank may affect female fertility in a variety of mammalian species. in these experiments we examined the effects of aggressive encounters and physical restraint in a primate chair on the patterns of lh secretion in ovariectomized, oestrogen-primed female marmosets. receipt of aggression from a female conspecific, followed by physical restraint for collection of blood samples (at 10-min intervals for 4 h), resulted in marked d ... | 1988 | 3139816 |
distribution of motoneurones innervating extraocular muscles in the brain of the marmoset (callithrix jacchus). | extraocular muscle motoneurones were localised in the oculomotor nucleus (on), trochlear nucleus (tn) and abducens nucleus (an) in the marmoset brain using the horseradish peroxidase (hrp) retrograde labelling technique. hrp pellets injected into individual extraocular muscles revealed one or more groups of labelled neurones occupying discrete loci within these nuclei. relatively little overlap of motoneurone pools was observed, except in the case of the inferior oblique and superior rectus musc ... | 1987 | 3142199 |
embryonic signals during the peri-implantation period in primates. | during the peri-implantation period of pregnancy in primates, chorionic gonadotrophin (cg) is the first clear signal of the embryo's presence and viability. in the marmoset (callithrix jacchus) implantation begins on day 11-12 after ovulation and cg is secreted by the embryo from this time. the inner cell mass is necessary for the normal secretion of cg by the trophoblast. implantation can be disrupted both in vivo and in vitro by antisera to the hcg-beta subunit. the secretion of a platelet act ... | 1988 | 3142993 |
administration of mptp to the common marmoset does not alter cortical cholinergic function. | the administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) to common marmosets induced persistent motor deficits and decreased concentrations of dopamine, homovanillic acid, and 3,4-dihydroxy-phenylacetic acid (dopac) and [3h]dopamine uptake in the caudate-putamen. there was an 80% reduction in tyrosine hydroxylase immunoreactive cells in substantia nigra. at 10 days following the start of mptp administration, the activity of choline acetyltransferase in the thalamus and frontal c ... | 1986 | 3143064 |
polymorphism of visual pigments in a callitrichid monkey. | microspectrophotometric measurements of visual pigments have been obtained for a large sample of new world monkeys of the species callithrix jacchus jacchus. these animals exhibit a polymorphism of visual pigments. the rods (lmax 499 nm) and the short-wave receptors (lmax 423 nm) appear to be common to all animals but individuals differ in the number and spectral position of pigments in the green-yellow spectral region. the latter pigments cluster near 545, 559 and 567 nm. male monkeys draw one ... | 1988 | 3143179 |
the enantiomers of the teratogenic thalidomide analogue em 12: 1. chiral inversion and plasma pharmacokinetics in the marmoset monkey. | the plasma pharmacokinetics of the enantiomers of 2-(2,6-dioxopiperidine-3-yl)-phthalimidine (em 12) and the racemic mixture of this substance were investigated in callithrix jacchus, a thalidomide-sensitive primate. single doses of 5 mg/kg body wt were administered orally or intraperitoneally. maximum plasma concentrations were reached 1 h after administration of the enantiomers, and 3 h after application of the racemate. the mean plasma elimination half-life was in the range of 5 h for the ena ... | 1988 | 3143339 |
effects of hypothalamic lesions upon the sexual and social behaviour of the male common marmoset (callithrix jacchus). | the sexual and associated behaviour of 10 adult male marmosets was recorded during pair tests with ovariectomized females, before and after bilateral thermal lesions of the hypothalamus. four sham-lesioned males served as controls. lesions varied in volume from 1.49 to 3.28 mm3 and extended from the ventromedial hypothalamus to the diagonal band of broca. precopulatory behaviours (anticipatory erections, tongue flicking and anogenital investigations of the female) as well as frequencies of mount ... | 1988 | 3143470 |
comparative chromosome morphology in three callitrichid genera: cebuella, callithrix, and leontopithecus. | a g-band karyotypic analysis was carried out in individual species groups of three callitrichid primate genera: cebuella, callithrix, and leontopithecus. within callithrix, the karyotypes of the morphologically distinct and geographically isolated morphotypes c. jacchus jacchus and c. jacchus penicillata were identical. within the lion tamarin genus, leontopithecus, the karyotypes of the three morphotypes (l. rosalia rosalia, l. rosalia chrysomelas and l. rosalia chrysopygus) were also indisting ... | 2010 | 3145301 |
effects of dorsal penile nerve transection upon the sexual behaviour of the male marmoset (callithrix jacchus). | the sexual behaviour of 7 adult male marmosets and their ovariectomized partners was observed during pair-tests before and after bilateral dorsal penile nerve transection (n = 4) or a sham operation (n = 3). after transection of the dorsal penile nerves, males mounted more frequently and the initial mount of each test was more prolonged. males continued to orientate correctly during mounts and to make rapid pelvic thrusts, with the erect penis close to the vaginal orifice. however, the deep pelv ... | 1988 | 3145513 |
kin preference in marmosets and tamarins: saguinus oedipus and callithrix jacchus (callitrichidae, primates). | field studies on callitrichid primates have suggested that some species may exhibit a communal breeding system in which two or more males mate with a single female and cooperatively participate in infant rearing. however, high levels of aggression have been observed between males under both laboratory and field conditions. in avian models for communal breeding, cooperating males are often closely related. in a laboratory test of a hypothesis of the amelioration of aggression based on kinship, fo ... | 2011 | 3147598 |
coprophagy in marmosets due to insufficient protein (amino acid) intake. | in the course of experiments to study the minimal protein requirement of common marmosets by nitrogen balance methods, coprophagy was observed. it occurred in most animals fed diets either with a protein content below 6% or lacking histidine/arginine. the protein level of 6% had previously been evaluated as being the minimal protein requirement for maintenance of marmosets. | 1988 | 3148060 |
the parasite trichospirura leptostoma associated with wasting disease in a colony of common marmosets, callithrix jacchus. | 1988 | 3150838 | |
dna 'fingerprinting' of captive family groups of common marmosets (callithrix jacchus). | 1988 | 3150839 | |
evaluation of seven test kits for the detection of pregnancies in the common marmoset, callithrix jacchus. | 1988 | 3151193 | |
the dopamine d2 agonist ly 141865, but not the d1 agonist skf 38393, reverses parkinsonism induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) in the common marmoset. | marmosets treated with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) (1-4 mg/kg i.p. daily for up to 8 days) develop profound parkinsonian akinesia. administration of the d1 agonist skf 38393 (1-20 mg/kg i.p.) 4-6 weeks later had no effect on the motor activity of animals pretreated with mptp. in contrast, the administration of the d2 agonist ly 141865 (0.1 or 0.5 mg/kg i.p.) caused a marked increase in motor activity lasting for up to 2 h. we conclude that stimulation of d2 dopamine recep ... | 1985 | 3162113 |
embryotoxic effects of thalidomide derivatives on the non-human primate callithrix jacchus; 3. teratogenic potency of the em 12 enantiomers. | the teratogenic potencies of the enantiomers of 2-(2,6-dioxopiperidine-3-yl)-phthalimidine ( = em 12), a teratogenic thalidomide analogue, were investigated in callithrix jacchus, a primate very sensitive to the teratogenic action of this thalidomide analogue. the results indicate that the s-(-)-form of em 12 is clearly more teratogenic than the r-(+)-form. the interpretation of the studies designed to evaluate stereo-selective differences in the teratogenicity of the enantiomers becomes difficu ... | 1988 | 3196154 |
effect of iodine deficiency on craniofacial growth in young common marmosets (callithrix jacchus). | the effects of iodine deficiency on general and craniofacial growth were determined in young common marmosets. examinations, including direct measurement, cephalometric radiology, and dental examination, were performed at three-month intervals from birth to 1 year on a cross-sectional sample of three groups of marmosets. the groups were those on a normal diet, n = 50; an iodine-deficient diet during gestation and for 1 year postnatally, n = 26; and an iodine-deficient diet only during gestation ... | 1988 | 3209685 |
embryotoxic effects of thalidomide-derivatives in the non-human primate callithrix jacchus. i. effects of 3-(1,3-dihydro-1-oxo-2h-isoindol-2-yl)-2,6-dioxopiperidine (em12) on skeletal development. | the response of pregnant marmosets (callithrix jacchus) to the thalidomide derivative em 12 was evaluated. em 12 was selected for these studies because it is more active than thalidomide and is much more stable for hydrolysis. skeletal gross structural abnormalities were observed when em 12 was given to marmosets for 3-7 days during the period between days 49 and 60 post ovulation. using the treatment schedule finally adapted in our laboratory, i.e. treatment during days 51-57 post ovulation, do ... | 1988 | 3355362 |
embryotoxic effects of thalidomide derivatives in the non-human primate callithrix jacchus. ii. elucidation of the susceptible period and of the variability of embryonic stages. | data are presented on the normal intra- and inter-litter variability of the embryonic stages in the common marmoset (callithrix jacchus) on day 56 of pregnancy. the embryology of the marmoset is described with respect to the susceptible period for the teratogenic action of thalidomide. | 1988 | 3355363 |
the influence of linoleate and vitamin e from sunflower seed oil on platelet function and prostaglandin production in the common marmoset monkey. | vitamin e and linoleate, both of which are found in high concentrations in sunflower seed oil, were examined independently for their influence on general and blood-vascular parameters in vitamin e-deficient common marmosets. a vitamin e-deficient diet (-e, 4 micrograms/g) was supplemented with either 40 micrograms/g vitamin e (+e), vitamin e stripped sunflower oil (+10% sso-e), or sso (+10% sso w/w) in a 2 x 2 factorial designed experiment, and the diets fed for 9 months to 4 even groups of comm ... | 1987 | 3437342 |
controlled ovulation in the marmoset monkey (callithrix jacchus) with human chorionic gonadotropin following prostaglandin-induced luteal regression. | controlled induction of ovulation in the marmoset monkey was attempted with a single injection of human chorionic gonadotropin (hcg; 50 iu) given on day 7 after prostaglandin-induced luteal regression. animals given hcg (n = 12) ovulated within a 2-day period (days 9 and 10 after prostaglandin) compared with a 4-day period (days 9 to 12) in the control group (n = 12). the mean interval to ovulation was similar in both groups. there was no difference in the timing of the preovulatory estradiol (e ... | 1987 | 3475217 |
the dopamine neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) produces histological lesions in the hypothalamus of the common marmoset. | the administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) to marmosets resulted in parkinsonism and degeneration of the substantia nigra pars compacta. examination of the hypothalamus showed neuronophagic-like rosettes of glial cells and diffuse increase in glial numbers in areas of the dopaminergic a11-a14 groups. these findings suggest that mptp may be toxic to dopamine neurons of the hypothalamus as well as to the substantia nigra. | 2012 | 3486388 |
effects of adrenalectomy upon proceptivity, receptivity and sexual attractiveness in ovariectomized marmosets (callithrix jacchus). | the sexual behaviour of seven pairs of marmosets was observed during blocks of 30 minute tests before and after the ovariectomized partners were bilaterally adrenalectomized. adrenalectomized females were maintained by intramuscular injections of deoxycorticosterone pivalate (dc) and hydrocortisone hemisuccinate (hc). twice daily injections of hc were required to maintain the high levels of plasma cortisol typical of marmosets and some other new world primates. adrenalectomy had no significant e ... | 1987 | 3575496 |
elevated urinary excretion of beta-aminoisobutyric acid and exposure to inorganic lead. | beta-aminoisobutyric acid (beta-aib), a normal degradation product of thymine, a constituent of dna and, to a lesser extent, of transfer rna, is excreted in low levels in human urine. we found that a group of iron workers occupationally exposed to inorganic lead excreted high levels of urinary beta-aib. elevated urinary excretion of beta-aib was also observed in marmosets, callithrix jacchus, that received lead acetate in drinking water. our results suggest that increased urinary excretion of be ... | 1987 | 3579372 |
failure of the prostaglandin f2 alpha analogue, cloprostenol, to induce functional luteolysis in the olive baboon (papio cynocephalus anubis). | the prostaglandin f2 alpha analogue, cloprostenol, which is an effective luteolytic agent in the common marmoset, was administered intramuscularly to olive baboons to determine if it possessed luteolytic properties in this species. the results showed that functional luteolysis was not induced when cloprostenol was administered during the mid- to late luteal phase or during early pregnancy. | 1987 | 3585971 |
fetal brain development in response to iodine deficiency in a primate model (callithrix jacchus jacchus). | the common cotton-eared marmoset (callithrix jacchus jacchus) has been used for the first time as a primate model to study the effects of dietary iodine deficiency on fetal brain development. paired male and female marmosets were fed a low-iodine diet of maize, peas, meat meal, torula yeast, maize oil and added vitamins, minerals and amino acids for 6 months before mating. offspring from first and second pregnancies were compared with offspring from control marmosets fed the same diet but supple ... | 1987 | 3612176 |
radionuclide angiographic study of the influence of dietary lipid supplements on cardiac function in the marmoset (callithrix jacchus). | radionuclide angiography was used to examine the influence of dietary fat on cardiac function in the common marmoset monkey (callithrix jacchus jacchus) under barbiturate anaesthesia. animals were fed for 6-8 months with a low fat (4.5%) reference diet or the same diet supplemented (12%) with sunflower seed oil or sheep fat. although there was a tendency towards increased heart rate, left ventricular ejection fraction, peak ejection rate, and peak filling rate in both fat supplemented groups, si ... | 1987 | 3652103 |
continuous light environment has no effect on the circadian testosterone rhythm, spermatogenesis or fertility of the marmoset (callithrix jacchus). | maintenance of adult male marmosets in continuous light for 60 days had no effect on the circadian rhythmicity of plasma testosterone levels, spermatogenesis or fertility. the results indicate that photoperiodicity is not the environmental determinant that regulates reproduction in male marmosets. | 1987 | 3654016 |
animal models of mycoplasma genitalium urogenital infection. | male and female animals were inoculated urogenitally with mycoplasma genitalium, recovered originally from men with nongonococcal urethritis. mice, hamsters and male rhesus monkeys (macaca mulatta) were resistant. male cynomolgus monkeys (macaca fascicularis) were not as sensitive as male chimpanzees (pan troglodytes): 9 of 11 developed an obvious genital tract infection, some shedding organisms for more than 18 weeks. m. genitalium was recovered from the blood of two of them when large numbers ... | 1987 | 3667225 |
proceptive displays of the female common marmoset (callithrix jacchus): effects of ovariectomy and oestradiol 17 beta. | proceptivity in the common marmoset consisted of brief periods when females remained with body and limbs immobile (im) or crouched, and then stared, lipsmacked and tongue-flicked at males. treatment of ovariectomized females with oestradiol activated all these proceptive displays but did not influence the combinations in which they occurred during im periods. | 2013 | 3714875 |
anteromedial hypothalamic lesions block proceptivity but not receptivity in the female common marmoset (callithrix jacchus). | the sexual behavior of 8, estradiol-treated, ovariectomized common marmosets was recorded prior to and after bilateral radiofrequency lesions of the hypothalamus. lesions of the anterior hypothalamus, which extended to varying degrees into the medial hypothalamus, virtually abolished proceptive tongue-flicking and staring displays. tongue-flicking during copulation also decreased, but the females did not show any significant increase in the number of mounts which they refused or terminated with ... | 2012 | 3730822 |
genital sensory feedback and sexual behaviour in male and female marmosets (callithrix jacchus). | local anaesthesia (using lidocaine) of the penis, or of the vagina and cervix caused marked changes in the sexual behaviour of marmosets. penile desensitization did not affect sexual arousal or erectile capacity. however, intromission latencies increased and 7 out of 10 males failed to intromit during some post-lidocaine tests. females failed to show several behavioural patterns which normally occur during intromission (shrugging body movements, head turning and opening the mouth) or exhibited t ... | 1986 | 3749303 |
mercapturic acid formation in the marmoset (callithrix jacchus). | benzylmercapturic acid is a major metabolite of [methylene-14c]benzyl chloride in the marmoset, as in the rat. the excretion of the minor metabolites benzylmercapturic acid sulphoxide and benzylcysteine accounted for a greater proportion of the dose than in the rat. excretion of hippuric acid as a metabolite of benzyl chloride was variable in the marmoset. acetylation of s-benzyl- and s-pentyl-l-cysteine to the corresponding mercapturic acids was extensive in the marmoset. trace amounts of the s ... | 1986 | 3751115 |
effects on the behavior of infant common marmosets (callithrix jacchus) of separation from caregivers and of drug-induced reduction in caregiver responsiveness. | the effects of separating 4-week-old twin marmosets for 8 days from their families are compared with the effects of leaving 4-week-old infants with their families, but reducing the responsiveness of their caregivers for 8 days by administration of the tranquilizer fluphenazine decanoate. both treatments reduce infant mobility, abolish play, and increase the time that infants spend with each other. during the period after the termination of the treatment, both treatment groups continue to play an ... | 1986 | 3758486 |
postnatal development of quantitative morphological parameters in the lateral geniculate nucleus of the marmoset monkey. | quantitative morphological parameters were studied in the lateral geniculate nucleus (lgn) of the marmoset monkey (callithrix jacchus) during development, using a series of 14 animals, at ages from birth to adulthood. they include the volume of the lgn and of its layers and interlaminar zones, their neuronal content expressed as numerical density and total number, and the density and number of glial cells in the nucleus as a whole. the volume of the lgn increases rapidly after birth, reaches a m ... | 1986 | 3779436 |
frequency representation in auditory cortex of the common marmoset (callithrix jacchus jacchus). | the location and characteristics of the primary auditory cortex of the common marmoset, callithrix jacchus jacchus, were determined in five anesthetized male adult animals by mapping the responses of cortical units and unit clusters to pure tone stimuli presented to the contralateral ear. the primary auditory cortex lies largely ventral to the lateral sulcus, the only major fissure on the lateral cortex of this smooth-brained primate, but in some animals it may extend significantly down the vent ... | 1986 | 3782506 |
the effects of cryopreservation and transfer on embryonic development in the common marmoset monkey, callithrix jacchus. | embryos were collected at the 4-10-cell stage from the oviducts (day 4; day 1 = ovulation) or as morulae (day 7) from the uterus of marmosets and frozen in 1.5 m-dmso (days 4 and 7) or 1.0 m-glycerol (day 4 only), using a slow freezing and thawing technique. of 22 day-4 embryos frozen in dmso, 18 were recovered and 16 of these were transferred to 10 synchronized recipients; 7 recipients became pregnant compared with all 7 control recipients receiving 10 unfrozen embryos. fifteen frozen-thawed mo ... | 1987 | 3820175 |
oculomotor areas involved in the parasympathetic control of accommodation and pupil size in the marmoset (callithrix jacchus). | the motoneurons of the oculomotor complex responsible for controlling accommodation and pupil size of the marmoset were identified by injecting horseradish peroxidase (hrp) into the ciliary ganglion. the anatomical organization of accommodation and pupil constrictor motoneurons was determined using electrical stimulation techniques. hrp-labelled cells were found through the whole length of the edinger-westphal nucleus (ew) and also just ventral to this nucleus in caudal sections. a projection fr ... | 1985 | 3835987 |
colonic mucin composition in primates. selective alterations associated with spontaneous colitis in the cotton-top tamarin. | heterogeneity of colonic mucin glycoprotein was examined in rectal mucosal biopsy specimens from a variety of primate species (saguinus oedipus, n = 18; macaca mulatta, n = 2; macaca fascicularis, n = 2; aotus trivirgatus, n = 2; saimiri sciureus, n = 2; and callithrix jacchus, n = 2). after initial separation of radiolabeled mucin and nonmucin glycoproteins solubilized from mucosal biopsy specimens, at least five labeled mucin components were found in monkey rectal mucosa in contrast to the six ... | 1985 | 3917260 |
distribution of parasympathetic motoneurones in the oculomotor complex innervating the ciliary ganglion in the marmoset (callithrix jacchus). | parasympathetic motoneurones in the oculomotor complex which innervate the ciliary ganglion were identified using the horseradish peroxidase (hrp) retrograde axonal tracer technique. the ciliary ganglion was located behind the eye by a lateral orbital approach and injected with hrp pellets mounted on the tips of microelectrodes. most of the labelled cells were distributed throughout the whole edinger-westphal nucleus (ew). outside the ew, only a small number of labelled cells were found, and mos ... | 1985 | 3918402 |
plasma aminotransferase measurements in the marmoset (callithrix jacchus). | plasma aminotransferase values were measured in a large number of samples from male and female marmosets. there were no differences due to age or sex for either ast or alt. haemolysis affected values for both enzymes, though the effect on alt was greater. | 2013 | 3919214 |
haematological characteristics of the common marmoset (callithrix jacchus jacchus). | blood cell indices and parameters of haemostasis were studied in the common marmoset. the majority of the results were similar to those found in man. differences from man were that the prothrombin time was shorter in the marmoset, higher concentrations of aggregating stimuli were required to cause platelet aggregation, and marmoset platelets did not aggregate under the influence of adrenalin. there was sexual dimorphism evident in the data for fibrinogen concentration and for platelet count, bot ... | 1985 | 3919433 |
spontaneous nasopharyngeal malignancies in the common marmoset. | 1985 | 3919492 | |
uterine rupture during labour in a common marmoset (callithrix jacchus). | 1985 | 3922101 | |
early implantation stages in the marmoset monkey (callithrix jacchus). | the morphology of the initial stages of implantation in the marmoset monkey (callithrix jacchus) was studied by obtaining embryos and associated endometrium at timed intervals after ovulation. estrus cycles were detected by measuring daily levels of plasma progesterone. following a short follicular phase, circulating levels of progesterone above 20 ng/ml were taken as representing day 1 after ovulation. on this basis, single, twin, and triplet embryos were recovered from six perfused-fixed femal ... | 1985 | 3922211 |
changes in fatty acid composition of the cardiac phospholipids of the cotton-eared marmoset (callithrix jacchus) after feeding different lipid supplements. | after feeding marmosets different lipid supplements for 6 months, the distribution of phospholipid classes and the fatty acid composition of phosphatidylcholine (pc), phosphatidylethanolamine (pe) and diphosphatidylglycerol (dpg) were determined in their cardiac membranes. supplementing the diet with linoleic-acid-rich sunflower seed oil raised the level of 18:2,n-6 in both pc and pe, but did not change the level significantly in dpg. when 18:2,n-6 was increased, the level of arachidonic acid (2 ... | 1985 | 3922279 |
congenital malformations in a common marmoset (callithrix jacchus) similar to human 13-trisomy syndrome. | this paper describes the finding of a number of malformations in a live-born common marmoset. the malformations included microphthalmia, ocular hypertelorism, cleft lip and palate and polydactyly. the findings are consistent with and strongly suggest chromosome trisomy similar to that which has been seen in man. | 1985 | 3923264 |
plasmodium brasilianum in the common marmoset callithrix jacchus. | chronic quartan malarial infection has been established in the common marmoset (callithrix jacchus). plasmodium brasilianum from a douroucouli monkey (aotus trivirgatus) was used to infect splenectomized twin animals, passed to an intact animal, and then to 4 other intact adults, 2 pairs of twins. in 2 of the 4 latter animals there was continuing patency with parasitaemias of less than or equal to 0.5% parasitized erythrocytes for 30 weeks. the other 2 had lower initial levels of parasitaemia; i ... | 1985 | 3925423 |
a conveyor belt task for assessing visuo-motor coordination in the marmoset (callithrix jacchus): effects of diazepam, chlorpromazine, pentobarbital and d-amphetamine. | a conveyor belt task for assessing visuo-motor coordination in the marmoset is described. animals are motivated by apple, a preferred food, under a state of minimal food deprivation. the apparatus used was designed to test animals within their home cages and not restrained in any way, thus avoiding possible confounding factors associated with restraint stress. stable baseline levels of performance were reached by all animals in a median of 24 sessions. performance was shown to be differentially ... | 1985 | 3927349 |
effects of ibotenic acid lesions of the basal forebrain on serial reversal learning in marmosets. | five common marmosets (callithrix jacchus) received unilateral ibotenic acid lesions of the basal forebrain. seven days post-operatively, choline acetyltransferase activity was reduced by 60% in frontal cortex and 40% in temporal cortex in the ipsilateral side compared with the contralateral side. four animals receiving bilateral lesions of the same area were impaired on the first post-operative task of serial reversal learning when compared with four animals receiving bilateral saline injection ... | 1985 | 3929315 |
ultrastructure and hydrolase cytochemistry of the developing marmoset yolk sac. | yolk sacs from callithrix jacchus were investigated light and electron microscopically as well as by qualitative light microscopic enzyme histochemistry on days 35 to 126 of gestation. the thin yolk sac wall of the early stages (day 35-41) consists of the cuboid, endodermal epithelium, the mesothelium of the exocoelom and some interposed blood vessels. the inner endodermal surface is rather smooth. at later stages, the epithelium becomes highly prismatic and forms folds which are lined by a mese ... | 1985 | 3929647 |
a callosal projection of area 17 upon the border region of area mt in the marmoset monkey, callithrix jacchus. | injections of the retrograde tracer hrp into the border region of the temporal visual area mt and adjoining cortex in callithrix labeled pyramidal neurons in area 17 of the contralateral hemisphere. evidence is presented that this newly discovered heterotopic callosal projection of the monkey striate cortex connects regions of representation of the zero vertical meridian of the visual field in a retinotopic order. | 1985 | 3930580 |
low-iodine diet for the production of severe i deficiency in marmosets (callithrix jacchus jacchus). | a low-iodine diet consisting of maize, peas (pisum sativum), torula yeast, meat meal, maize oil and added vitamins, minerals and amino acids was given to eight pairs of adult, common cotton-eared marmosets (callithrix jacchus jacchus). eight control pairs were given the same diet to which potassium iodate was added. both groups also received low-i apple and deionized water. the diet provided adequate nutrition, as confirmed by the maintenance of body-weight and good health. in the i-deficient ma ... | 1985 | 3933555 |
immunization of marmosets with trypanosoma cruzi cell surface glycoprotein (gp90). | marmosets (callithrix jacchus) have been immunized with a vaccine comprising a trypanosoma cruzi 90k cell surface glycoprotein and the adjuvant saponin; a combination previously shown to be protective in mice. immunization was by two s.c. injections one month apart and non-lethal challenge of homologous y strain t. cruzi was given one month after the booster immunization. no anti-t. cruzi antibodies were detected after the first immunization but high levels developed after boosting. immunization ... | 1985 | 3936239 |
the acute toxicity of sarin in marmosets (callithrix jacchus): a behavioral analysis. | in marmosets, the clinical signs of poisoning following the administration of sarin and the effects of sarin upon performance in three behavioral test models were investigated. the sensitivity of marmosets to the lethal action of sarin was shown to be greater than that of rodent species and rabbits but very similar to that of the rhesus monkey. doses of sarin ranging from 33 to 55% ld50, resulting in erythrocyte acetylcholinesterase inhibitions of 88% or more, were shown to disrupt the performan ... | 1985 | 3937760 |
observations on the interaction between adult group members, group members without rearing experience and infants in the common marmoset, callithrix jacchus. | this study describes the reactions of adult, rearing-experienced members of three callithrix jacchus families to interactions between animals without rearing experience and infants. the direct involvement of adult group members in situations in which inexperienced animals interact with infants decreases as the infants become older. inexperienced animals will approach infants more seldom, if adult, rearing-experienced animals are nearby. adult, rearing-experienced members of the group display pri ... | 2012 | 3937806 |
an allometric study of hippocampal components. a comparative study of the brains of the european hedgehog (erinaceus europaeus), the tree shrew (tupaia glis), and the marmoset monkey (callithrix jacchus). | brains of western european hedgehogs, common tree shrews and common marmosets were perfused and stained according to timm's method. the volumes of hippocampal components were determined with semiautomated quantitative techniques and compared by allometric methods. the results support previous findings that the size of the hippocampus in marmosets and tree shrews is about twice that of the hippocampus of the european hedgehogs of the same body weight. three hippocampal substructures account for m ... | 1985 | 3939608 |
new cytogenetic techniques in the study of primate genome evolution. | fixed metaphase chromosomes of different species and genera of primates (five species of macaca genus and callithrix jacchus) have been studied after alu i restriction enzyme digestion and da-dapi counterstaining, in the attempt to determine some qualitative characteristics of their dnas and specifically of the dna localized in the heterochromatic components of the karyotypes. the results have been discussed in the light of those already published on humans, confirming the potentiality of this a ... | 1986 | 3943867 |
cloprostenol-induced luteolysis in the marmoset monkey (callithrix jacchus). | a single intramuscular injection of 0.5 micrograms cloprostenol was not luteolytic on day 6 or 7 of the ovarian cycle (n = 3), but was luteolytic in some animals (3/5) on day 8 and 9 and luteolytic in all 23 animals treated between days 10 and 17 of the ovarian cycle, and in 7 animals treated between days 19 and 43 of pregnancy. luteal function was monitored by measurement of progesterone in peripheral blood using a simple and rapid non-extraction assay. there was a dramatic fall in peripheral b ... | 1985 | 3968650 |
effects of oestradiol 17b, progesterone and testosterone upon proceptivity and receptivity in ovariectomized common marmosets (callithrix jacchus). | the sexual behaviour of eight pairs of marmosets was observed during blocks of 30 minute tests after the ovariectomized female partners were treated with physiological doses of testosterone, oestradiol and progesterone. the effects of an intra-vaginal progesterone treatment were also investigated. pre-ovulatory levels of oestradiol significantly increased the females' proceptive and receptive tongue-flicking displays and reduced the percentage of mounts refused. mid-luteal levels of progesterone ... | 1985 | 4034688 |
sexual dimorphism in the postcranial skeleton of new world primates. | this study examines sexual dimorphism in 24 dimensions of the postcranial skeleton of four platyrrhine species: callithrix jacchus, saguinus nigricollis, saimiri sciureus, and cebus albifrons. the two callitrichid species show a relatively small amount of variation in the degree of sexual dimorphism among the different dimensions. variation is considerably higher in the two cebid species as reflected by a mosaic pattern of sexual dimorphisms with males being significantly larger than females in ... | 1985 | 4043875 |
metabolism and tissue distribution of tobacco-specific n-nitrosamines in the marmoset monkey (callithrix jacchus). | three male marmoset monkeys (callithrix jacchus) were injected i.v. with the tobacco-specific carcinogen [2'-14c]n'-nitrosonornicotine (nnn) (20.3 mumol/kg body weight) or [carbonyl-14c]4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (nnk) (18.8 or 420 mumol/kg body weight). they were sacrificed 4 h later. tissue distribution was studied in two monkeys by whole-body autoradiography and by computer-assisted densitometric analysis of the autoradiograms. the autoradiograms showed a high level of rad ... | 1985 | 4053274 |
[elastic fibers distribution in the disc of the temporormandibular joint of the marmoset (callithrix jacchus l. 1758)]. | 1973 | 4197801 | |
the myoglobin of primates. 4. new world monkeys: cebidae: (1) saimiri sciureus (squirrel monkey); (2) lagothrix lagothricha (humboldt's woolly monkey). callitrichidae: callithrix jacchus (common marmoset). | 1973 | 4198766 | |
changes in aortic medial elastic structure at different sites in the primates erythrocebus patas, macaca irus and callithrix jacchus. | 1973 | 4201087 | |
[observations on the delivery behaviour in the common marmoset (callithrix jacchus erxleben, 1777) (author's transl)]. | 1973 | 4203260 | |
progesterone and oestrogen metabolism in the pregnant marmoset (callithrix jacchus). | 1974 | 4214968 | |
repair of the post-extraction sockets in marmosets (callithrix jacchus). | 1974 | 4218706 | |
[serum proteins and red cell enzymes in callithrix jacchus (author's transl)]. | 1974 | 4219869 | |
histochemical studies on the adrenal medullary cells of the marmoset (callithrix jacchus). | 2017 | 4221954 | |
histological and histochemical data on the intestinal tract of the marmoset. (callithrix jacchus). | 1967 | 4232561 | |
data on the kidneys of the marmoset (callithrix jacchus). | 1968 | 4233484 | |
the adrenal cortex of the marmoset. (callithrix jacchus). | 1969 | 4241965 | |
the male reproductive system of the common marmoset (callithrix jacchus). | 1970 | 4251244 | |
data on the structure and distribution of polysaccharides in the lacrimal glands of the common marmoset (callithrix jacchus). | 1972 | 4265832 | |
histochemical data on the aorta of marmosets (callithrix jacchus and callithrix penicillata). | 1974 | 4276774 | |
histochemical data on the sebaceous glands in the lips of the marmoset (callithrix jacchus). | 1971 | 4325117 | |
the eccrine sweat glands of the palms and soles of the common marmoset (callithrix jacchus). | 1971 | 4332587 | |
histochemical data on the parotid glands of the marmosets, callithrix jacchus and callithrix penicillata. | 2015 | 4364227 | |
latent infection and malignant lymphoma in marmosets (callithrix jacchus) after infection with two oncogenic herpesviruses from primates. | 1974 | 4365908 | |
histochemical data on the sebaceous glands in the lips of the marmoset (callithrix jacchus). | 2015 | 4371339 | |
structure and distribution of polysaccharides in the salivary glands of the common marmoset (callithrix jacchus). | 1972 | 4625919 | |
experimental-anatomical studies on the "middle temporal visual area (mt)" in primates. i. efferent cortico-cortical connections in the marmoset callithrix jacchus. | 1972 | 4628544 | |
[locomotive behavior of the monkey callithrix jacchus erxleben, 1777, with special reference to the hand function]. | 1972 | 4629602 | |
handedness in the common marmoset (callithrix jacchus). | 1973 | 4632104 | |
[angioarchitectonics of the rhombencephalon and cerebellum. vi. leptomeningeal vessels in callithrix jacchus (linné, 1758)]. | 1972 | 4632871 | |
[present aspects of structure and histochemistry of the stomach of the marmoset (callithrix jacchus)]. | 2014 | 4955660 |