Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| effects of male partners upon proceptivity in ovariectomized estradiol-treated marmosets (callithrix jacchus). | effects of male partners upon the expression of female proceptivity were examined in two experiments using 16 ovariectomized marmosets. experiment 1 showed that the female's proceptive tongue-flicking display (ptf) is triggered specifically by eye contact with the male. stimulation of ptf by administration of estradiol-17 beta (e2) to ovariectomized females depends in part upon the male's responsiveness to female displays, such as "staring" and "freezing," which may serve to attract his attentio ... | 1989 | 2501211 |
| description of eight phases of spermiogenesis in the marmoset testis. | the differentiation of spermatids in the marmoset (callithrix jacchus, n = 9) testis is described here at the light-microscopic level employing serial semithin sections. the definition of 8 different phases of spermiogenesis, i.e. the formation of spermatids, is based upon the changes in the development of nucleus, acrosome and flagellum. | 1989 | 2501964 |
| progesterone antagonist lilopristone: a potent abortifacient in the common marmoset. | the effects of a progesterone antagonist zk 98.734 (lilopristone) on implantation, early pregnancy, and midpregnancy were studied in the common marmoset, callithrix jacchus jacchus. treatment (5 mg/da intramuscularly for 3 consecutive days) on day (n = 8) after the midcycle peak in estradiol levels in mated animals induced a premature drop in plasma progesterone levels and shortened the ovarian cycle length. treatment on day 20 (n = 5) or day 40 (n = 5) induced a drop in progesterone levels and ... | 1989 | 2502015 |
| distribution of phenolsulphotransferase and monoamine oxidase in the common marmoset. | 1989 | 2502120 | |
| termination of pregnancy in common marmosets (callithrix jacchus) following administration of antiserum to chicken riboflavin carrier protein. | the presence of protein(s) which is immunologically and functionally similar to the well characterised avian riboflavin carrier protein has been demonstrated in female common marmosets during pregnancy. the protein(s) that interacts with [14c]riboflavin has an immunological homology to chicken riboflavin carrier protein. the termination of pregnancy in four out of six marmosets following administration of antiserum to chicken riboflavin carrier protein supports the hypothesis that vitamin carrie ... | 1989 | 2503615 |
| inoculation of new world primates with the human immunodeficiency virus. | the susceptibility of common marmosets and cotton-top tamarins to infection by hiv-2 in vivo was tested. one year and 19 months, respectively, post-inoculation, sera taken from three of four animals from each species are reactive for hiv-2 antibodies and hiv-specific nucleotide sequences were demonstrated in short-term cultures of pbl from two cotton-top tamarins. the animals remain in good health. | 1989 | 2503618 |
| a re-investigation of the behavioural effects of intracerebral injection in marmosets of cytopathic cerebrospinal fluid from patients with schizophrenia or neurological disease. | in experiments designed to investigate transmission, cerebrospinal fluid (csf) from patients with schizophrenia or neurological disease (huntington's disease) which had been found to induce a cytopathic effect (cpe) in human embryonic fibroblast cell culture was injected intracerebrally into common marmosets. behavioural observations were made on the animals during a period of 2 1/2 years prior to injection and for 2 1/2 years after injection. in an earlier study (baker et al. 1983 b) we found t ... | 1989 | 2503849 |
| the protein requirement of adult marmosets: nitrogen balances and net protein utilization of milk proteins, soy protein, and amino acid mixtures. | nitrogen balance studies were conducted in adult male marmosets (callithrix jacchus) using purified and semipurified diets with protein levels between 0% and 7%. daily nitrogen loss in a state of prolonged protein free nutrition was 131 +/- 16 mg/kg body weight0.75. zero nitrogen balance resulted from mean daily intake of 261 mg nitrogen/kg0.75 when high quality protein sources were used. very low protein intake or the lack of arginine and histidine in an amino acid mixture induced coprophagy. i ... | 1989 | 2503946 |
| increased caudate dopamine turnover may contribute to the recovery of motor function in marmosets treated with the dopaminergic neurotoxin mptp. | administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) to common marmosets initially impaired motor function, but a partial recovery occurred over the following weeks. at both 10 days and 4-6 weeks following mptp treatment, [3h]dopamine ([3h]da) uptake into synaptosomal preparations of putamen was markedly decreased. at 10 days and 4-6 weeks following mptp treatment da, homovanillic acid (hva) and 3,4-dihydroxyphenylacetic acid (dopac) levels in the caudate nucleus and nucleus acc ... | 1989 | 2505199 |
| [ultrastructure of the gastrointestinal epithelium in the marmoset (callithrix jacchus)]. | the epithelium of the stomach and intestine of one and three days old as well as adult marmosets was investigated using transmission electron microscopy and was compared with already existing data of man and the laboratory rodents, rat, mouse and guinea-pig. on postnatal day (pd) 1, the enterocytes possessed an inframicrovillous membrane system and giant lysosomes which were absent in adult marmosets whereas the surface and glandular epithelial cells of the stomach showed all structures which we ... | 1989 | 2505460 |
| luteal deficiency caused by human ovarian follicular fluid peptide in post-partum marmosets, callithrix jacchus. | a peptide purified from human ovarian follicular fluid (hoffp) was administered during the follicular phase of post-partum marmosets. four of the five animals treated with hoffp, ovulated as evidenced by the presence of ovarian stigmata at the time of laparotomy. however, only 2 of these animals became pregnant, one had a normal delivery while the other aborted. a shortening of the luteal phase was observed in the other three animals and all animals conceived in subsequent cycles. the results in ... | 1989 | 2505968 |
| shortening of luteal phase in common marmosets by sheep ovarian follicular fluid peptide. | a low molecular weight peptide has been partially purified from sheep follicular fluid. it inhibited fsh binding to granulosa cells from ovarian follicles of common marmosets (callithrix jacchus). when injected into cycling marmosets during the follicular phase, it reduced the area under the curve (auc) of circulating progesterone. the peptide also shortened the luteal phase in all marmosets during the treatment cycle compared to the pretreatment control cycle. these results indicate that the ov ... | 1989 | 2505972 |
| fall in coronary heart disease mortality in u.s.a. and australia due to sudden death: evidence for the role of polyunsaturated fat. | epidemiological studies have been reviewed which provide suggestive evidence of an association between the fall in coronary heart disease mortality in the u.s.a and australia since 1967, characterized by a fall in sudden deaths, to the increase in polyunsaturate fat consumption that has occurred in both countries since 1960. this association led directly in the same institution to carefully designed experimental studies undertaken in the rat, and a non-human primate, the marmoset (callithrix jac ... | 1989 | 2506314 |
| a new transmissible viral hepatitis of marmosets and tamarins. | callitrichid hepatitis (ch) is a newly recognized, acute, fatal, epizootic disease of new world primates in the family callitrichidae. since 1980, 12 outbreaks of ch have occurred in us zoos, involving several callitrichid species including the endangered golden lion tamarin (leontopithecus rosalia). ch was experimentally transmitted to common marmosets via a bacteria-free filtrate of liver from a naturally infected tamarin. all three inoculated marmosets developed an acute fatal disease with th ... | 1989 | 2509570 |
| control of inhibin production by primate granulosa cells. | in-vitro data from experiments on rats implicate granulosa cells as primary sites of hormone-dependent ovarian inhibin biosynthesis, but no equivalent data exist for primates. we have used the common marmoset (callithrix jacchus) to investigate inhibin biosynthesis in primate granulosa cells in vitro and to determine its relationship to preovulatory follicular development. to relate the production of immunoactive inhibin to follicular maturity, we studied primary granulosa cell cultures from fol ... | 1989 | 2509620 |
| systems for collection of urine in the captive common marmoset, callithrix jacchus. | two systems are described for the collection of 24 h urine samples from the common marmoset (callithrix jacchus). using 84 adult animals, 1210 24-h samples were collected. mean urinary excretion was 14.4 +/- 7.5 ml/24 h (n = 1210, mean +/- sd). no differences were observed between sexes (for 52 females, 24 h volume = 15.1 +/- 8.0 ml; for 32 males, 24 h volume = 12.5 +/- 6.0 ml). no significant differences were observed between pregnant and non-pregnant females with respect to 24 h urine volume, ... | 1989 | 2509801 |
| further treatment with mptp does not produce parkinsonism in marmosets showing behavioural recovery from motor deficits induced by an earlier exposure to the toxin. | 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp), or 0.9% saline, was administered to a group of common marmosets initially treated with the toxin 12-18 months previously. initial treatment had consisted of a cumulative dose of 6-22 mg/kg (i.p.) which caused marked parkinsonism. subsequently, the animals gradually recovered normal motor function. further treatment consisted of a cumulative dose of mptp of 78-83 mg/kg (i.p.) but this produced only modest akinesia. at 12-18 months after the ini ... | 1989 | 2510050 |
| learning about rules but not about reward is impaired following lesions of the cholinergic projection to the hippocampus. | common marmosets with bilateral ibotenic acid-induced destruction of the neurones of the vertical limb of the diagonal band of broca, which provide the major cholinergic input to the hippocampal formation, were impaired on the acquisition but not on the retention of a repeated-trial visuospatial discrimination learning task. they were also impaired on serial spatial reversal learning (but not on serial object reversal learning), on acquisition of a trial-independent successive concurrent discrim ... | 1989 | 2510907 |
| [mother to child transmission of human t cell leukemia virus type-1]. | infection of htlv-1 during childhood may be the most probable cause of leukemogenesis of atl. the possibility of mother to child transmission of htlv-1 was studied. our epidemiological investigation disclosed that almost all mothers of htlv-1 carrier children were positive for anti-htlv-1 antibody and children born from carrier mothers showed statistically higher positive rate for anti-htlv-1 antibody than control groups. a large number of htlv-1 positive lymphocytes were detected in the milk fr ... | 1989 | 2512396 |
| treatment with a selective mao b inhibitor prevents loss of dopamine in the nucleus accumbens of mptp-treated common marmosets. | administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) to common marmosets induced motor deficits, associated with a marked decrease in the uptake of [3h]dopamine into synaptosomes in the putamen and a reduction in the content of dopamine in both caudate nucleus and nucleus accumbens. histological analysis showed a marked loss of dopamine-containing cells in the zona compacta of the substantia nigra and less loss in the ventral tegmental area. treatment of animals with the selecti ... | 1989 | 2512516 |
| splitting of the circadian activity rhythm in common marmosets (callithrix j. jacchus; primates). | long-term recordings of the free-running circadian activity rhythm in common marmosets, callithrix j. jacchus, living under constant environmental conditions (ll 200-470 lx) provided evidence of rhythm splitting in nonhuman primates. in two out of ten test animals two different types of splitting occurred; spontaneous persistent splitting and temporary splitting. neither a reduction of the illumination intensity nor the application of dark pulses had any effect on the two activity components of ... | 1989 | 2513221 |
| milk-borne transmission of htlv-i as a major route in the endemic cycle. | mother-to-child transmission of htlv-i as a major route in the endemic cycle of htlv-i was established by epidemiologic evidence that (1) 22% (17/78) of children of htlv-i carrier mothers were themselves carriers, in contrast to approximately 1% of the young age population of the same area, (2) more than 95% (23/24) of mothers of carrier children were themselves carriers, and (3) the product of the prevalence of carrier mothers and the incidence of carriers in children born to them corresponded ... | 1989 | 2514566 |
| blockade of the oestrogen-induced lh surge in the ovariectomized common marmoset (callithrix jacchus) by an lhrh antagonist. | six long-term ovariectomized adult marmoset monkeys were treated at 0 h with 35 micrograms oestradiol benzoate s.c. to induce an lh surge. they were also treated with detirelix (an lhrh antagonist) at 0 h, 12 h and 24 h (exp. 1), or at 0 h and 24 h (exp. 2) at a dose of 300 micrograms/kg s.c., or received the detirelix vehicle alone at 0 h, 12 h and 24 h (exp. 3). all animals received the three treatments, with at least 4 weeks between experiments. blood samples were collected at 0 h and at 6-12 ... | 1989 | 2539474 |
| changing responsiveness of luteal cells of the marmoset monkey (callithrix jacchus) to luteotrophic and luteolytic agents during normal and conception cycles. | dispersed marmoset luteal cells were incubated for 2 h and progesterone production measured after exposure to hcg, cloprostenol, dibutyryl camp, pgf-2 alpha, pgf-2, adrenaline or melatonin. the cells were studied on days 6, 14 and 20 after ovulation in conception and non-conception cycles. luteal cells from day 14 non-pregnant marmosets were compared with human luteal cells taken in the mid-luteal phase. all the treatments stimulated progesterone production including cloprostenol, which is luteo ... | 1989 | 2560061 |
| the callimico goeldii (primates, platyrrhini) genome: karyology and middle repetitive (line-1) dna sequences. | callimico goeldii (goeldi's marmoset) is a neotropical primate with 2n = 47,x1x2y in the male, and 2n = 48,x1x1x2x2 in the female, due to a y-autosome translocation. karyological comparisons of callimico, callithrix jacchus and cebus apella suggest that callimico is a member of the callitrichidae. isozyme data and restriction mapping of line-1 repetitive elements in these species and in a variety of other neotropical primates confirm these findings and supply strong evidence for including callim ... | 1989 | 2560695 |
| tissue specific differences in the fatty acid composition of the marmoset monkey (callithrix jacchus). | 1. the possible relationship between the fatty acid composition of the adipose tissue of the marmoset monkey (callithrix jacchus) and its dietary lipid intake was examined after a long-term feeding trial. 2. only the proportions of stearic and linoleic acid in the adipose tissue were similar to those in the diet. the proportions of all other saturated and unsaturated fatty acid components were significantly different thus greatly reducing the potential value of this relationship in the marmoset. ... | 1989 | 2565781 |
| the histochemical location of three diagnostic enzymes in the marmoset liver. | the histochemical locations of alkaline phosphate (alp), leucine aminopeptidase (lap) and gamma glutamyltransferase (ggt) were demonstrated in the liver of the marmoset (callithrix jacchus). although all three enzymes were located in cell membranes, the location of lap was demonstrated by a chromogenic substrate, in the canalicular membrane. ggt was seen in a vascular network, provisionally identified as the peribiliary arterial plexus. possible diagnostic applications in toxicology are discusse ... | 2008 | 2565922 |
| stereoselective reversal of mptp-induced parkinsonism in the marmoset after dermal application of n-0437. | the selective dopamine d-2 receptor agonist n-0437 produced a rapid and dose-dependent reversal of motor deficits lasting 90-120 min following i.p. or oral administration of the racemate to mptp-treated common marmosets. in contrast, topical application of (+/-)-, (+)- or (-)-n-0437 to the skin of mptp-treated animals did not alter locomotor activity in the initial 4 h although other motor disabilities were reduced. however, 24 h following application of the racemate or the (-) enantiomer both l ... | 1989 | 2572426 |
| desenkephalin-gamma-endorphin is an antagonist of the hyperactivity response induced by infusion of dopamine into the nucleus accumbens of rat and ventral striatum of marmoset. | the ability of desenkephalin-gamma-endorphin (de gamma e; org5878) to antagonise a raised limbic dopamine function was investigated in the rat and common marmoset. dopamine was infused for 13 days directly into the nucleus accumbens of the rat and ventral striatum of the marmoset and increased locomotor activity. such increases in both the rat and marmoset were antagonised by the subcutaneous injection of de gamma e, administered in a range 10-500 micrograms/kg (t.i.d.), during the 13 day period ... | 1989 | 2574424 |
| transient depletion of nucleus accumbens dopamine content may contribute to initial akinesia induced by mptp in common marmosets. | acute treatment of common marmosets with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) caused an initial profound akinesia and other motor deficits. however, over the following months akinesia gradually disappeared although the animals remained clumsy and poorly coordinated. at 10 days following mptp treatment there was a profound decrease in the dopamine, hva and dopac content of the caudate nucleus, putamen and nucleus accumbens. by 3-4 months following mptp treatment the animals had lar ... | 1989 | 2597167 |
| in vivo formation of metabolites of prostaglandins i2 and i3 in the marmoset monkey (callithrix jacchus) following dietary supplementation with tuna fish oil. | recent studies have shown that ingestion of eicosapentaenoic acid (epa) in man results in the formation of 'trienoic' prostanoids which amy partly explain the potent antithrombotic/antiatherogenic properties of long-chain polyunsaturated n-3 fatty acids (pufas). however, endogenous formation of cyclooxygenase metabolites of epa has not been demonstrated in an animal model, and in vitro studies indicate a clear species difference in the conversion of epa to pgi3. thus, in the present study, the i ... | 1989 | 2659082 |
| immunohistochemical distribution and colocalization of regulatory peptides in the carotid body. | current investigations on the immunohistochemical occurrence and co-occurrence of biogenic polypeptides in the mammalian carotid body were reviewed and extended by our own recent findings. the family of chromogranins and related peptides in glomus cells appears to have a widespread interspecies distribution, whereas other peptides investigated occur in a species-specific pattern. immunoreactivity to antisera against opioids, which derive from the proenkephalin sequence, appears to be present in ... | 1989 | 2671303 |
| naloxone reversal of stress-induced suppression of lh release in the common marmoset. | there is considerable evidence suggesting that endogenous opioid peptides (eop) might play a role in the defensive response to stressful stimuli. the stress associated with receipt of aggression from a female conspecific and physical restraint for collection of serial blood samples (at 10-min intervals) resulted in a significant (p less than 0.05) suppression of lh secretion in the oestradiol primed ovariectomized marmoset. administration of the opioid receptor antagonist, naloxone (1 mg/kg) imm ... | 1989 | 2780870 |
| in vitro immortalization of marmoset cells with three subgroups of herpesvirus saimiri. | sequences within the rightmost 7 kilobases of the unique l dna of herpesvirus saimiri are required for oncogenicity of the virus. the same dna region has been found to be highly variable among different strains of herpesvirus saimiri. on the basis of this variability, herpesvirus saimiri strains were classified into groups a, b, and non-a, non-b. herpesvirus saimiri strains representing the three groups were used successfully for in vitro immortalization of phytohemagglutinin-activated, interleu ... | 1987 | 2822956 |
| herpesvirus ateles immortalizes in vitro a cd3+cd4+cd8+ marmoset lymphocyte with nk function. | herpesvirus ateles, nonpathogenic in its natural host, the spider monkey, induces a fatal lymphoproliferative syndrome in a variety of new world primate species. whereas the closely related new world primate virus herpesvirus saimiri immortalizes in vitro common marmoset lymphocytes that express a tcr and phenotypically are cd4-cd8+nkh1+, we now show that h. ateles-immortalized marmoset lymphocytes are cd3+ and cd4+. furthermore, these cd4+ lymphocytes coexpress cd8 and nkh1. the nk function of ... | 1988 | 2828471 |
| long-term protection against argentine hemorrhagic fever in tacaribe virus infected marmosets: virologic and histopathologic findings. | tacaribe virus may represent a better alternative than attenuated strains of junin virus (jv) for immunization against argentine hemorrhagic fever (ahf) because of possible risk of persistent infection of disease associated with live, attenuated strains. callithrix jacchus marmosets, which suffer 100% mortality if inoculated with the pathogenic xj strain of jv, were used to evaluate possible tacaribe virus persistence, subclinical, or long-term disease and the duration of protection against chal ... | 1988 | 2832541 |
| expression of c-type viral particles at implantation in the marmoset monkey. | type c rna retroviral particles have been observed budding from the plasma membrane of syncytiotrophoblast during a study of embryo implantation in the common marmoset (callithrix jacchus). these viral particles appear in profusion at the interface of syncytiotrophoblast with cytotrophoblast. they appear to be a non-infective, endogenous viral component of the host genome, although the precise role of the c-type virus in this context is unclear at present. such viral particles have been reported ... | 1988 | 2836475 |
| glomerulonephritis in common marmosets infected with plasmodium brasilianum and epstein-barr virus. | plasmodium brasilianum causes chronic quartan malaria in the common marmoset callithrix jacchus, whereas epstein-barr virus (ebv) infection is followed by an infectious mononucleosis-like syndrome that resolves. we infected weanling marmosets with one or both of these pathogens. timing of the infections influenced outcome. six animals were simultaneously infected with both agents; four became seriously ill (with accompanying proteinuria and edema) and either died or were killed. histopathology i ... | 1988 | 2844917 |
| [cytochemical studies of hydrolases in the genitalia of female marmosets (callithrix jacchus) and rats]. | 1985 | 2862661 | |
| thermogenic capacity and brown adipose tissue activity in the common marmoset. | resting oxygen consumption was measured in anaesthetized male and female common marmosets (callithrix jacchus) at 29 degrees c. injection of noradrenaline caused a marked increase in oxygen consumption (63%), but this response was lower in males. large deposits (750 mg) of brown adipose tissue (bat) were dissected from the cervical, subscapular, axillary and perirenal areas. high levels of guanosine diphosphate binding to isolated brown fat mitochondria were observed, indicating that the thermog ... | 1985 | 2863059 |
| mptp-induced parkinsonism in the common marmoset: behavioral and biochemical effects. | 1987 | 2881443 | |
| behavioural consequences of the infusion of dopamine into the nucleus accumbens of the common marmoset (callithrix jacchus). | marmosets, shown to have comparable levels of spontaneous locomotor activity, assessed in cages equipped with infra-red photocell units, could be separated into "high", "moderate" and "low activity" responders on the basis of their locomotor hyperactivity response to peripherally administered (-)n-n-propylnorapomorphine [(-)npa]. animals selected as "low" and "high activity" responders to (-)npa were subjected to chronic infusion of dopamine, or its solvent, bilaterally into the nucleus accumben ... | 1987 | 2890118 |
| an immunohistochemical study of the acute and long-term effects of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine in the marmoset. | administration of the drug 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine induces a parkinsonian syndrome in primates. intraperitoneal injections of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine in the common marmoset (callithrix jacchus) produced symptoms of rigidity, akinesia and tremor which persisted for at least one month. however, after this time, considerable behavioural recovery occurred, although animals were still severely bradykinetic compared with controls. marmosets were allowed to sur ... | 1987 | 2893993 |
| antiparkinsonian activity of (+)-phno in the mptp-treated common marmoset. | administration of mptp (1-4 mg/kg ip daily for 5-7 days) to common marmosets induced persistent parkinsonian motor deficits. the subcutaneous administration of (+)-phno [(+)-4-propyl-9-hydroxynaphthoxazine; 1-4 micrograms/kg] caused a dose-dependent reversal of the akinesia and incoordination of movement. similarly, oral administration of (+)-phno (5-20 micrograms/kg) caused an equivalent reversal of the motor abnormalities. no dyskinetic phenomena were induced by (+)-phno on oral or subcutaneou ... | 1987 | 2904119 |
| tissue activities of enzymes of diagnostic interest in the marmoset and rat. | the activities of enzymes of diagnostic interest were investigated in the liver, heart, kidney and muscle of the marmoset (callithrix jacchus) and the rat. methods of tissue extraction which gave maximal enzyme activity were used and comparison between the species showed some major differences. ast, ldh and gdh showed a similar distribution in both species but icdh activity was much higher in the rat heart than in any other rat or marmoset organ. alp, lap and ggt were present in much higher acti ... | 1988 | 2905366 |
| the d1 agonist skf 38393 inhibits the antiparkinsonian activity of the d2 agonist ly 171555 in the mptp-treated marmoset. | administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp) to common marmosets induced persistent motor deficits. administration of the d1 agonist skf 38393 (2.5-20 mg/kg, i.p.) caused a dose-dependent increase of this akinesia. administration of the d2 agonist ly 171555 (0.3 mg/kg, i.p.) reversed the motor deficits induced by mptp treatment. pretreatment of animals with skf 38393 (2.5-20 mg/kg, i.p.) caused dose-dependent inhibition of the anti-parkinsonian action of ly 171555 (0.3 m ... | 1988 | 2907373 |
| purification and properties of cytochrome p-450 from liver microsomes of phenobarbital-treated marmoset monkeys (callithrix jacchus). | one form of cytochrome p-450 from phenobarbital-induced marmoset liver was purified to apparent electrophoretic homogeneity and compared with the major inducible form isolated from rat liver. whereas spectral properties and molecular weights, as well as catalytic activities towards aminopyrine and ethylmorphine n-demethylation are quite similar, rates of o-dealkylation with enzymes from the two species are considerably different. while ethoxycoumarin deethylation for the marmoset cytochrome is a ... | 1989 | 2919406 |
| lymphocyte subsets in the young and aging marmoset (callithrix jacchus). | t lymphocytes were studied in healthy young and old marmosets (callithrix jacchus). data indicate that monoclonal antisera to human t lymphocyte antigens can be used to identify these cells in marmosets. total t and suppressor t cells were lower in the older group; there were no differences in helper t or in b cells. helper/suppressor ratios (t4/t8) were increased in the older group. thus, immune system alternations with aging and/or immune deficiency syndromes may be studied in this animal mode ... | 1986 | 2948018 |
| histochemical localization of 3 beta-hydroxysteroid dehydrogenase in marmoset ovaries during pro- and diestrus, with special reference to substrate specificity. | we applied qualitative cytochemical procedures to investigate and compare the distribution of 3 beta-hydroxysteroid dehydrogenases (hsdh) in pro- and diestrus ovaries of sexually mature marmosets (callithrix jacchus) using dehydroepiandrosterone or etiocholane-3 beta-ol-17-one as the substrate. during proestrus dehydroepiandrosterone dehydrogenase (3 beta-5 alpha-hsdh) activity was found in the theca of tertiary follicles and in atretic granulosa cells. in granulosa cells at advanced stages of d ... | 1987 | 2956223 |
| the d-1 dopamine receptor partial agonist, cy 208-243, exhibits antiparkinsonian activity in the mptp-treated marmoset. | administration of l-dopa plus carbidopa, or the d-2 agonist (+)-phno, to mptp-treated common marmosets caused motor hyperactivity and a reversal of the parkinsonian syndrome. in contrast, administration of the putative d-1 agonist skf 38393 was without effect on movement or motor disability. the subsequent administration of another putative selective d-1 partial agonist cy 208-243 produced a dose-related improvement in motor activity and reversal of parkinsonian motor deficits in mptp-treated an ... | 1988 | 2977118 |
| attenuated junin virus infection in callithrix jacchus. | twenty marmosets, male callithrix jacchus, were used during this study. fifteen of the marmosets were inoculated with 5,000 tcid50 of the attenuated xjc13 strain of junin virus by intramuscular route and five were left as uninoculated controls. animals were observed for a 420-day period. in order to carry out virologic, hematologic, serologic, and histologic studies the animals were bled and/or killed at different days post infection(pi). results obtained showed that the attenuated strain produc ... | 1985 | 2981980 |
| the mechanism of end-organ resistance to 1 alpha,25-dihydroxycholecalciferol in the common marmoset. | the common marmoset, a new world monkey, requires a large amount of cholecalciferol (110 i.u./day per 100g body wt.) to maintain its normal growth. in a previous report, we demonstrated that the circulating levels of 1 alpha, 25-dihydroxycholecalciferol [1 alpha,25(oh)2d3] in the marmosets are much higher than those in rhesus monkeys and humans, but the marmosets are not hypercalcaemic [shinki, shiina, takahashi, tanioka, koizumi & suda (1983) biochem. biophys. res. commun. 14, 452-457]. to comp ... | 1985 | 2988503 |
| oral transmission of human t-cell leukemia virus type-i into a common marmoset (callithrix jacchus) as an experimental model for milk-borne transmission. | to obtain experimental support for possible milk-borne infection of human t-cell leukemia virus type-i (htlv-i), short-term-cultured viral antigen-positive lymphocytes obtained from peripheral blood of adult t-cell leukemia lymphoma complex (atll) patients were inoculated into the oral cavity of two adult common marmosets (callithrix jacchus) in amounts comparable to those of htlv-i-carrying cells fed to a baby in the milk of seropositive mothers. one of the animals seroconverted 2.5 months afte ... | 1985 | 2991061 |
| palatability and digestibility of soya- and milk proteins in callithricidae. | 4 protein sources were tested for palatability, digestibility, influence on bodyweight and consistency of faeces in callithrix jacchus and saguinus fuscicollis. the protein sources were incorporated at crude protein levels of 12, 17 and 22% in a pelleted diet. a banana supplement was also fed which reduced the total protein content to 10.7, 14.7 and 18.3%. the test diets, fed for 3 weeks, were well accepted with the milk proteins being slightly preferred. consumption of the 12% protein pellets w ... | 1985 | 2993740 |
| nononcogenic deletion mutants of herpesvirus saimiri are defective for in vitro immortalization. | herpesvirus saimiri l-dna sequences between 0.0 and 4.0 map units (4.5 kilobase pairs) are required for oncogenicity; these sequences are not required for replication of the virus. to investigate the basis for the lack of oncogenicity of mutants with deletions in this region and to study the function of this region, we developed a reliable system for in vitro immortalization by herpesvirus saimiri. in contrast to peripheral blood lymphocytes from cotton-top tamarins (saguinus oedipus) and owl mo ... | 1986 | 3003401 |
| oral infection of a common marmoset with human t-cell leukemia virus type-i (htlv-i) by inoculating fresh human milk of htlv-i carrier mothers. | to obtain definitive evidence that milk-borne infection plays a critical role in the endemy or mother-to-child transmission of human t-cell leukemia virus type-i (htlv-i), we inoculated concentrated fresh human milk cells obtained from htlv-i carrier mothers into the oral cavity of a common marmoset (callithrix jacchus). twenty-eight milk samples were collected (5-10 ml each) from 17 carrier mothers in the first week after delivery. cells in the milk were centrifuged down and resuspended in 1/10 ... | 1985 | 3005206 |
| ectrodactyly and syndactyly in a common marmoset (callithrix jacchus). | this paper describes previously unreported malformations of both fore and hind feet in a liveborn common marmoset. ectrodactyly of both fore feet and left hind foot and syndactyly of the right hind foot were observed. | 2010 | 3005763 |
| rapid diagnosis and management of parainfluenza i virus infection in common marmosets (callithrix jacchus). | during 1983 a severe episode of respiratory infection occurred in a marmoset colony at these laboratories. of 91 marmosets, 69 showed clinical signs of disease, one died and nine were so ill that euthanasia was necessary. eight were examined post mortem and all showed consolidation of the lungs. laboratory studies were carried out in an attempt to establish the cause of the outbreak and an interstitial pneumonia was found in seven animals which were examined histologically. direct electron micro ... | 1986 | 3009965 |
| establishment and characterization of a chronic infectious mononucleosislike syndrome in common marmosets. | epstein-barr virus (ebv) was inoculated into two species of marmosets. successful infection was established in the majority of the animals of one species, callithrix jacchus, as evidenced by the development of high, persistent levels of antibody against virus-specific capsid and early nonstructural proteins. antibodies also were produced against the major membrane antigen and, in some animals, against ebv nuclear antigen (ebna) 2 but not against ebna 1. this is the antibody profile normally note ... | 1986 | 3011982 |
| the common marmoset as an animal model for vitamin d-dependent rickets, type ii. | 1986 | 3012983 | |
| herpesvirus saimiri strain 11 immortalizes a restricted marmoset t8 lymphocyte subpopulation in vitro. | herpesvirus saimiri induces a fatal lymphoproliferative syndrome in a variety of new world primate species. we now show that cell lines derived from pbl of the common marmoset by in vitro-immortalization with h. saimiri strain 11 represent a remarkably restricted lymphocyte population. these cell lines have nk cell function, phenotypically express both suppressor/cytotoxic (t8) and nk cell (nkh1)-associated antigens, and express a t cell receptor. this subpopulation of lymphocytes is a very mino ... | 1986 | 3018122 |
| therapeutic effect of the antiviral agent ribavirin in junín virus infection of primates. | in order to assess the effect of the antiviral ribavirin on the course of junín virus infection in callithrix jacchus, seven inoculated monkeys were treated with 15 mg of the drug, twice a day, starting 6 days after infection when all animals were viremic. the three untreated controls showed typical signs of junín virus infection at 14 days pi and their mean time of death was 18 days. in contrast, no signs of illness were detected in ribavirin-treated animals until 24 days pi, when marmosets sho ... | 1986 | 3023541 |
| protection of junín virus-infected marmosets by passive administration of immune serum: association with late neurologic signs. | argentine hemorrhagic fever (junín virus) is a human viral disease for which immune therapy proves effective, though a late neurologic syndrome is occasionally associated with the treatment. we attempted to determine in the infected marmoset callithrix jacchus whether immune therapy leads to protection and/or cns damage. fifteen c jacchus were inoculated with 10(3) tissue culture infectious dose 50% (tcid50) of the xj strain of junín virus. on day 6 post infection (pi), 12 primates were treated ... | 1987 | 3025358 |
| localization of neurotensin receptors in the forebrain of the common marmoset and the effects of treatment with the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine. | the distribution of neurotensin binding sites was mapped in the brain of the common marmoset using [3h]neurotensin as the ligand. autoradiographic techniques show that the density of receptors is particularly high in the substantia nigra, ventral tegmental area, olfactory tubercle and cerebral cortex and that the distribution of neurotensin receptors in the cerebral cortex and striatum is heterogenous. in the cerebral cortex neurotensin receptors are concentrated in layers i, ii, iii and v, whil ... | 1987 | 3038264 |
| successful infection of the common marmoset (callithrix jacchus) with human varicella-zoster virus. | the common marmoset, callithrix jacchus, can be infected with human varicella-zoster virus (vzv), both wild-type strain kmcc and attenuated vaccine strain oka/merck. infection was accomplished with either whole-cell-associated or cell extract vzv by combined oral-nasal-conjunctival application and was characterized by substantial and persistent anti-vzv antibody responses. the infectivity of vzv for marmosets was destroyed by treatment of inocula with heat or uv light. diluted inocula with as fe ... | 1987 | 3041014 |
| fate of recombinant human renin administered exogenously to anesthetized monkeys. | highly purified recombinant human renin (rh-renin), synthesized by chinese hamster ovary cells, was labeled with iodine-125 and was given intravenously to pentobarbital-anesthetized common marmosets (callithrix jacchus) to study the fate of the circulating renin. specific anti-rh-renin antiserum was used to identify the 125i-rh-renin. plasma disappearance of the exogenously administered 125i-rh-renin in marmosets (n = 6) showed two exponential components, with a half-life of 12.1 +/- 1.9 minutes ... | 1988 | 3049339 |
| gelatin as a vehicle for food and vitamin administration to marmosets. | for a period of three years, gelatin was used as a vehicle for administration of food, vitamin complex and drugs to laboratory maintained callithrix penicillata and callithrix jacchus marmosets and a breeding colony of c. penicillata. in both circumstances, results were satisfactory. the animals survived for long periods of time, with adult, young and juvenile primates in the breeding colony showing good physical condition. | 1986 | 3084867 |
| learning impairment following lesion of the basal nucleus of meynert in the marmoset: modification by cholinergic drugs. | five common marmosets (callithrix jacchus) received unilateral ibotenic acid lesions of the basal nucleus of meynert (nbm). seven days later, choline acetyltransferase activity was significantly reduced by 50% in the frontal and temporal neocortex, 40% in the amygdala, and approximately 30% in the motor, parietal and occipital cortex in the ipsilateral hemisphere. four marmosets receiving equivalent bilateral ibotenic acid lesions were severely impaired on new visual object discrimination learni ... | 1986 | 3087582 |
| platelet measurements in the common marmoset, callithrix jacchus. | platelet counts and mean platelet volumes were determined for 39 male and 32 female adult marmoset whole blood samples and these results are compared with previously published data. there is no evidence of a difference between sexes but there is some evidence of a relationship between platelet count and mean platelet volume in the callithrix jacchus population studied. | 1986 | 3088067 |
| serum protein electrophoretic patterns of the marmoset, callithrix jacchus. | three electrophoretic procedures were used to separate protein fractions of marmoset serum. the albumin of marmoset serum migrated further than that of human serum with all three procedures and the number and size of the globulin fractions differed with species and with procedure. | 1986 | 3088068 |
| bone in the marmoset: a resemblance to vitamin d-dependent rickets, type ii. | the common marmoset, a new world monkey, requires a large amount of vitamin d3 to maintain its normal growth. this monkey is reported to have an end-organ resistance to 1 alpha,25-dihydroxyvitamin d3 (1 alpha,25(oh)2d3). in this study, the bone morphology of marmosets fed a high vitamin d3 diet (intake of vitamin d3, 110 iu/day/100 g of body weight) was compared by x-ray and histological examinations with that of rhesus monkeys (old world monkey) fed a normal diet (intake of vitamin d3, 5 iu/day ... | 1986 | 3089562 |
| sulphoxidation of s-carboxymethyl-l-cysteine in the rhesus monkey (macaca mulatta), cynomologus monkey (macaca fascicularis), african green monkey (cercopithecus aethiops) and the marmoset (callithrix jacchus). | the metabolic pathways giving rise to the urinary metabolites of s-carboxymethyl-l-cysteine have been identified for the rhesus, cynomologus, african green and marmoset species of monkey. the formation of a sulphoxide metabolite from the sulphide precursor is a reaction important in these species. the metabolic profile displayed by the marmoset was distinct from the three old world species, with the rhesus and cynomologus being similar to man. | 1986 | 3089678 |
| afferent connections of the substantia innominata/basal nucleus of meynert in carnivores and primates. | afferent connections to the substantia innominata/nucleus basalis complex of monkeys and cats were traced by using the method of retrograde transport of horseradish peroxidase (hrp). altogether ten injections of hrp were performed in four monkeys (saimiri sciureus, callithrix jacchus, galago senegalensis) and in four cats, with either vertical or oblique needle approaches. the entire brains excluding the olfactory bulbs and the cerebellum were then screened for labeled neurons. in both monkey an ... | 1986 | 3093564 |
| quantitative changes in morphological parameters in the developing visual cortex of the marmoset monkey. | several quantitative morphological parameters were measured during postnatal development in area 17 of the marmoset monkey (callithrix jacchus). in a series of 14 animals, at ages from birth to adulthood, we studied changes in the thickness, surface area and volume of area 17, as well as the neuronal and glial numerical densities, and total numbers. we found evidence for a rapid increase in thickness, area and volume, culminating between 6 weeks and 6 months postnatally, and then decreasing. the ... | 1986 | 3094833 |
| a backpack system for long-term osmotic minipump infusions into unrestrained marmoset monkeys. | a backpack system is described whereby osmotic minipumps are used to infuse gonadotrophin-releasing hormone (gnrh) subcutaneously in a pulsatile manner into infertile socially subordinate female marmoset monkeys (callithrix jacchus jacchus). this procedure enables long-term infusion of gnrh without the necessity of repeated subcutaneous implantation of pumps and gnrh reservoirs. the backpack and cannulae system is inexpensive and can be constructed from commonly available materials. the gnrh tre ... | 1986 | 3095582 |
| [comparative scanning and transmission electron microscopy studies of the ependyma of the central canal in the spinal cord of primates. i. electron optical image of the ependyma in the central canal of the spinal cord of the callithrix monkey (callithrix jacchus, linné 1758)]. | the ependyma lining the central canal of the spinal cord of adult males and females monkey, callithrix jacchus, was examined by scanning and transmission electron microscopy. the cross section of the lumen of the central canal are round, oval, or triangular. light and dark ependymal cells, depending on the density of the cytoplasm, were found. the light ependymal cells are fewer than the dark cells. the ependyma cytoplasm contained numerous mitochondria, filamentous structures, one or more well- ... | 1986 | 3098621 |
| short-term toxicity study of 4-dimethylaminoazobenzene in marmosets. | the marmoset, a small non-human primate, has rarely been used in toxicological studies. a short-term toxicity study was performed on common marmosets (bw = 330 +/- 32 g). fifteen male marmosets received oral administration of dab at a dose level of 56 mg/kg/day and 4 control animals received corn oil alone for a period of 15 days. hematological, biochemical, histopathological and bone marrow examinations were carried out on the 5th, 10th and 15th day of treatment. body weight decreased continuou ... | 1986 | 3102751 |
| effects of variable linoleate intake on aortic pgi2-like activity and fatty acid composition: difference between rat and marmoset (callithrix jacchus). | two animal species, the laboratory rat and a non-human primate (the common marmoset) were compared with respect to the influence of dietary lipid supplementation on both fatty acid composition and prostanoid synthetic capacity of aorta. standard chow (ref. diet) was supplemented (12% w/w) with either sheep fat (sf) or sunflower seed oil (sso). differences were apparent in the aortic phospholipid fatty acids from both animal models, as a result of the diet, although the type and the extent of cha ... | 1986 | 3103139 |
| the ultrastructure of early implantation in the marmoset monkey (callithrix jacchus). | the ultrastructural morphology of the initial stages of implantation in the marmoset monkey (callithrix jacchus) was studied in pregnant monkeys at known time intervals after ovulation. the earliest samples, obtained 13 days after ovulation, displayed both cytotrophoblast and syncytiotrophoblast. the cytotrophoblast was restricted to the blastocoel, whilst syncytiotrophoblast intruded to the endometrial basal lamina. at later stages, days 16 and 19 after ovulation, both cytotrophoblast and syncy ... | 1987 | 3103485 |
| a new heterotopic callosal projection of primary visual cortex in the monkey, callithrix jacchus. | a callosal projection of area 17 upon the dorsomedial visual area in the marmoset monkey was demonstrated by means of retrograde transport of neuronal tracers. the projection was restricted to those regions representing the vertical meridian in the two areas. this finding, and the data of other authors, indicate that the monkey area 17 projects transcallosally onto homotopic and several heterotopic targets. | 1987 | 3103864 |
| 4-phenylpyridine and three other analogues of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine lack dopaminergic nigrostriatal neurotoxicity in mice and marmosets. | c57 black mice were injected repeatedly with maximal tolerated doses of 2 chemical analogues of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (mptp); 4-phenylpyridine and 4-phenyl-1,2,3,6-tetrahydropyridine. although both compounds were clearly acutely toxic to mice, neither caused any reduction in striatal dopamine content after chronic exposure. two mptp analogues which may be formed endogenously during the metabolism of brain monoamines, 2-methyl-1,2,3,4-tetrahydroisoquinoline and 2-methyl-1,2 ... | 1987 | 3106859 |
| influence of dietary fats on blood coagulation and prostaglandin production in the common marmoset. | common marmosets were fed a standard marmoset diet (ref) or diets supplemented with 12% (wt/wt) sunflower seed oil (sso) or sheep fat (sf) for a period of 90 weeks. the values for coagulation indices, clotting time, and russel viper venom time were consistent with decreased thrombotic tendency of platelets from animals on the sso diet relative to the low fat, ref diet animals, while an increased tendency to thrombosis was observed with sf-fed marmosets. the sso- and sf-supplemented marmosets sho ... | 1987 | 3107535 |
| active immunization against renin in normotensive marmoset. | primate renins (human and monkey) are very similar. we used pure human renin to immunize marmosets (callithrix jacchus) and thereby produce a chronic blockade of the renin-angiotensinogen reaction. after a control period of 2 months, five male marmosets, on their usual sodium-poor diet, were immunized against pure human renin by three subcutaneous injections of 30 micrograms each, with complete and then incomplete freund's adjuvant. three marmosets were injected with adjuvant only and served as ... | 1987 | 3108891 |
| effects of arecoline and pilocarpine on learning ability in marmosets pretreated with hemicholinium-3. | common marmosets (callithrix jacchus) were trained to perform serial reversal position discrimination tasks in a wisconsin general test apparatus. intraventricular injection of hemicholinium-3 4 h before testing resulted in a profound impairment of position discrimination learning which could be overcome by the intramuscular administration of low doses of the muscarinic agonists, arecoline or pilocarpine. | 1987 | 3108931 |
| suboccipital puncture for cerebrospinal fluid in the common marmoset (callithrix jacchus). | cerebrospinal fluid (csf) can be obtained routinely from the common marmoset (callithrix jacchus) by suboccipital puncture. one field of research in which this method is applied is the detection of changes in the biogenic amine metabolism in csf. the puncture technique is simple and rapid and does not injure the experimental animal. | 1987 | 3110501 |
| the basement membrane of the persisting maternal blood vessels in the placenta of callithrix jacchus. | formation and morphology of the thickened basement membrane-like layer around the persisting maternal vessels of the callithrix jacchus placenta were investigated from day 45 until term (day 142) using light, electron and immunofluorescence microscopy. thickening occurs with the establishment of contacts between the vessels and the syncytiotrophoblast (day 48). final thickness is reached at about day 100. the course of the vessels shows wide gaps where the maternal blood flows freely into the in ... | 1987 | 3111301 |
| plasma testosterone concentrations during postnatal development in the male common marmoset. | repeated measurements of plasma testosterone (t) were made in 56 male marmosets from the day of birth until 300 days of age and in 44 adults (greater than 3 years). the resulting profile of plasma t during postnatal development shows higher levels during infancy (1-90 days) followed by a nadir between 100 and 170 days and then a progressive rise in t during puberty. although t levels of up to 21 ng/ml were measured in infant males, mean levels (+/- sem) were 5.4 +/- 0.6 ng/ml (days 1-10), declin ... | 1986 | 3111958 |
| determination of ovulation and pregnancy in the marmoset (callithrix jacchus) by monitoring of urinary hydroxypregnanolone excretion. | in callithrix jacchus the urinary excretion of hydroxypregnanolone (5 alpha-pregnane-3 alpha, 7 alpha-diol-20-one) shows a luteal rise during the ovulatory cycle. this progesterone metabolite can therefore be used as an indication of ovulation, implantation, and subsequently for the persistence of the pregnancy. the excretion can be monitored by high performance thin-layer chromatography (hptlc) and postchromatographic derivatization after enzymatic hydrolysis of the conjugate. profiles of urina ... | 1987 | 3112406 |
| [spontaneous activity and eating behavior of the white-tufted marmoset (callithrix jacchus)]. | 1987 | 3113089 | |
| ascorbic acid requirement and assessment of ascorbate status in the common marmoset (callithrix jacchus). | marmosets can tolerate an ascorbic acid (aa) deficiency for several weeks without clinical symptoms. after being fed an aa-free diet for 3 months, nonspecific deficiency symptoms became obvious. different dietary levels of aa resulted in corresponding serum ascorbate levels. the kidney threshold of aa in marmosets is comparable to that in humans. when the minimal aa requirement is defined as the amount that is necessary to maintain a serum aa level above the kidney threshold, then about 20 mg aa ... | 1987 | 3113325 |
| long-term data on the reproduction and maintenance of a colony of common marmosets (callithrix jacchus jacchus) 1972-1983. | we have used our laboratory records to compare data on the reproduction and maintenance of common marmosets in different colonies and to provide additional information on the species in captivity. data are presented for a period of 12 years. this was long enough to allow information on longevity, mortality, aggression and incest. in addition 543 infants were born from a total of 202 births. no seasonality was found and the highest proportion of births overall was that of triplets. a significantl ... | 1987 | 3114559 |
| rats and marmosets respond differently to serotonin agonists and antagonists. | the actions of the serotonin precursor 5-hydroxytryptophan (5-htp), the agonist 5-methoxy-n,n-dimetyltryptamine (meodmt) and quipazine (qpz) and the antagonists cyproheptadine, methysergide and metergoline, were studied in the rat and in the common marmoset (callithrix jacchus). the precursor and agonists elicited head shakes, forepaw padding, splayed hindlimbs, tremor and straub tail in the rat. however, head shakes were not observed after meodmt and straub tail was not observed after qpz. carb ... | 1987 | 3114802 |
| the measurement of ethylenethiourea and ethyleneurea in the rat and common marmoset callithrix jacchus after zineb (zinc ethylenebisdithiocarbamate) dosing. | the metabolism of the fungicide zineb, (zinc ethylenebisdithiocarbamate), has been studied in the rat and the marmoset. 2. it was found in both species that a relatively large proportion (21-22%) of the original zineb administered was detectable in the excreta as ethylenethiourea (etu) a known mutagen, teratogen and carcinogen. 3. a further proportion (2-5%) was determined to be ethyleneurea which is a metabolite of etu. 4. results of comparative experiments in marmosets revealed that etu was ph ... | 1987 | 3114968 |
| partial purification and characterization of chorionic gonadotrophin in plasma and in culture medium of trophoblast cells from the marmoset monkey (callithrix jacchus). | a biologically active gonadotrophin has been purified from the media of long-term cultures of trophoblast cells of the common marmoset monkey by a combination of precipitation and chromatography. marmoset chorionic gonadotrophin (cg) is a glycoprotein which binds concanavalin a and wheat germ agglutinin. the protein purified from culture media exists as several isoelectric species with pi in the range ph 3.5-4.5. on gel filtration it eluted with an apparent molecular weight of 68-72,000 but on p ... | 1987 | 3116232 |
| difference in serum ascorbate in two species of callithricidae. | in one species each of the subfamilies marmosets and tamarins of the new world monkey family callithricidae, serum levels of ascorbic acid were compared. although the feeding regimen had been the same for both species for several years, the average concentration of serum ascorbate in the tamarins saguinus fuscicollis (n = 21; 0.54 +/- 0.29 mg/100 ml) was only one-fifth that of the marmosets callithrix jacchus (n = 19; 2.56 +/- 1.07 mg). | 1987 | 3119508 |
| characteristics of trophoblastic tissue derived from in vitro culture of preimplantation embryos of the common marmoset monkey. | the features of trophoblastic tissue derived from the in vitro culture of marmoset monkey embryos have been described. long-term trophoblast cultures (in excess of three years in one case) were established from the primary trophoblast monolayer of four of 38 embryos; division of one of these embryos produced two long-term cultures. the trophoblast cells retained their ability to synthesize and secrete chorionic gonadotrophin (cg) during maintenance in vitro and were capable of prolonging the lut ... | 1987 | 3120174 |
| chronic colitis in common marmosets (callithrix jacchus) and cotton-top tamarins (saquinus oedipus). | 2011 | 3122405 | |
| chronic toxicity of 3,4,3',4'-tetrachlorobiphenyl in the marmoset monkey (callithrix jacchus). | cotton top marmoset monkeys (callithrix jacchus) were orally dosed with 3, 1, 0.1 or 0 mg 3,4,3',4'-tetrachlorobiphenyl (tcb)/kg body weight twice per week for 18-23 weeks. severe toxicity occurred in the highest dose group. clinical signs of toxicity were a rapid decrease in body weight, alopecia, abnormal nail growth, nodular enlargement of the nipple area and scaly skin. haematological analysis of peripheral blood revealed mild leukocytosis and anemia. biochemical alterations observed were el ... | 1988 | 3124295 |
| post-partum changes in hormones and sexual behaviour in captive groups of marmosets (callithrix jacchus). | video-tape recordings were made of behavioural interactions in eight family groups of marmosets for 24-30 days after parturition. blood samples were collected from females for measurement of plasma luteinizing hormone (lh) and progesterone. a pre-ovulatory lh surge occurred in six females between days 10-18 (mean +/- sem, 13.8 +/- 1.3 days). in these groups, sexual interactions increased in frequency during the post-partum period and males began to initiate mounts on days 1, 2, 2, 6, 8 and 10 re ... | 1987 | 3126512 |
| connections of the primary auditory cortex in the common marmoset, callithrix jacchus jacchus. | the afferent and efferent connections of the primary auditory cortex (ai) of common marmosets were traced following small injections of wheat germ agglutinin conjugated with horseradish peroxidase (wga-hrp) made at best frequency (bf)-defined sites in the ai. after the injections the animals remained anesthetized for 15-23 hours; they were then perfused transcardially with fixative and the brains were processed for wga-hrp reaction product. examination of the disposition of labelled material rev ... | 1988 | 3128585 |