Topic
Primate
About: Primate is a research topic. Over the lifetime, 1250 publications have been published within this topic receiving 67388 citations. The topic is also known as: the primate order & primates.
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01 Jan 1996
TL;DR: The results suggest that Zif268 ocular dominance columns establish late during normal primate visual system development, and that some degree of visual plasticity is still present at this age in the Cebus monkey.
Abstract: Zif268 transcription factor is expressed throughout Cebus apella visual cortex at high basal levels. Monocular eyelid suture alters the levels of Zif268 on neurons connected to the deprived eye, revealing ocular dominance columns in the striate cortex of Cebus as previously demonstrated in Old World monkeys (Chattdhttri and Cynader, Brain Res., 605 (1993) 349–353). Zif268 ocular dominance columns are revealed in adult Cebusmonkey after 24–48 h of monocular deprivation, but not in infant monkeys up to 3 months of age. In 6-month-old Cebus monkeys, Zif268 ocular dominance columns are still poorly defined. These results suggest that Zif268 ocular dominance columns establish late during normal primate visual system development, and that some degree of visual plasticity is still present at this age in the Cebusmonkey.
11 citations
TL;DR: There was an inverse relation between levels of T3 and TSH in the owl monkeys at night and during the day, and the absence of a significant difference in the levels of thyroid stimulating hormone (TSH) between the two species suggested a lower thyroid sensitivity to TSH.
Abstract: Serum levels of triiodothyronine (T3) and tetraiodothyronine (T4) were significantly lower in owl monkeys than in long-tailed macaques. These observations were considered to be consistent with the lower metabolic rate of the owl monkey. However, the absence of a significant difference in the levels of thyroid stimulating hormone (TSH) between the two species suggested a lower thyroid sensitivity to TSH in the owl monkeys. There was an inverse relation between levels of T3 and TSH in the owl monkeys at night and during the day.
11 citations
01 Jan 1996
TL;DR: The addition of new fields, such as VS, Ri, and 7b in the line which led to extant primates, may account for the increase in dexterity, bilateral coordination of the hands, and tactile recognition abilities that characterize primates.
Abstract: The organization of lateral somatosensory cortex has been described for several primates including Old World, and New World simians as well as prosimians. While descriptions of SII for New World monkeys and prosimians are consistent, those for Old World macaque monkeys vary considerably. However, all data conform to the proposal that at least two mirror symmetric representations reside in the area traditionally considered as a single field. These include the second somatosensory area, S11, and the parietal ventral area, PV. Discrepancies in the descriptions of SII in primates, as well as non primate mammals may be the result of the two fields being confused. Because of the ubiquity of SII and PV in all mammals, it is proposed that these areas are part of a basic plan of somatosensory processing. The addition of new fields, such as VS, Ri, and 7b in the line which led to extant primates, may account for the increase in dexterity, bilateral coordination of the hands, and tactile recognition abilities that characterize primates.
11 citations
TL;DR: The data are consistent with the hypothesis that the squirrel monkey adrenal cortex possesses an increased number of 11-hydroxylase enzyme units compared to that of Old World primate species, and is therefore more efficient in producing cortisol.
11 citations
TL;DR: Six different species of nonhuman primates housed at the CIRMF Primate Center were evaluated for their natural killer cell activity and for the ability of their peripheral blood mononuclear cells to proliferate in response to known mitogens.
Abstract: Six different species of nonhuman primates housed at the CIRMF Primate Center, cynomolgus monkeys (Macaca fascicularis), rhesus monkeys (Macaca mulatta), mandrills (Mandrillus sphinx), vervets (Cercopithecus aethiops pygerythrus), chimpanzees (Pan troglodyte) and baboons (Papio hamadryas), were evaluated for their natural killer cell activity and for the ability of their peripheral blood mononuclear cells to proliferate in response to known mitogens (concanavalin A, phytohemagglutinin and staphylococcal enterotoxin A) and to react with a panel of mouse monoclonal antibodies directed against human leukocyte surface antigens. Basic information on normal immune functions in these primates is important because of their use as experimental animal models for the study of human diseases such as acquired immunodeficiency syndrome (AIDS), hepatitis, loiasis and malaria.
11 citations