Results 51 to 60 of about 13,374 (188)

Do fawn‐footed mosaic‐tailed rats experience age‐related cognitive decline in novel object recognition?

open access: yesJournal of Zoology, EarlyView.
We explored age‐related cognitive decline in captive fawn‐footed mosaic‐tailed rats (Melomys cervinipes) using a novel object recognition task. Contrary to expectations, recognition memory did not decline with age, but recognition memory was lower in intermediate‐aged rats compared to both older and younger individuals.
K. DiBenedetto   +2 more
wiley   +1 more source

Time-Dependent Changes in Cortisol and Tympanic Temperature Lateralization During Food Deprivation Stress in Marmoset Monkeys

open access: yesFrontiers in Behavioral Neuroscience, 2020
Temporal information about food availability can be easily entrained, as in the case of fixed feeding routines of captive animals. A sudden unintentional or deliberate delay (e.g., food deprivation—FD) leads to frustration and psychological stress due to
Lucas C. Pereira   +5 more
doaj   +1 more source

Plasma Membrane Remodeling During Microglial Activation: A Hypothesis Linking Microglial Shape and Lipid Droplet Formation

open access: yesGlia, Volume 74, Issue 8, August 2026.
Microglial morphology changes in response to damage by Aβ and aging result in significant reductions in cell surface area. Transcriptomic analyses suggest that fatty acid synthesis and triacylglycerol formation drive redistribution of surface membrane into intracellular lipid droplets.
G. William Rebeck   +4 more
wiley   +1 more source

Polymorphism in Trypomastigotes of Trypanosoma (Megatrypanum) minasense in the blood of experimentally infected squirrel monkey and marmosets

open access: yesMemorias do Instituto Oswaldo Cruz, 1999
Experimental infections by Trypanosoma (Megatrypanum) minasense were performed in primates - Saimiri sciureus and Callithrix penicillata - with the objective of searching for morphological variations of the blood trypomastigotes with respect to hosts and
Mariangela Ziccardi   +1 more
doaj   +1 more source

Marmosets contain multitudes

open access: yeseLife
Single-cell RNA sequencing reveals the extent to which marmosets carry genetically distinct cells from their siblings.
Kenneth Chiou, Noah Snyder-Mackler
openaire   +3 more sources

Endothelium‐ and epithelium‐derived novel endogenous catecholamines as modulators of the autonomic nervous system

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 15, Page 4091-4110, August 2026.
Abstract Catecholamines are classically viewed as neuronal transmitters and adrenal hormones; however, accumulating evidence demonstrates that sources other than nerve fibres and adrenal medulla play a fundamental role in local organ regulation. Physiological paradoxes, such as preserved organ function after denervation or transplantation, challenge a ...
Mariana G. de Oliveira   +3 more
wiley   +1 more source

Hematology and Serum Biochemistry Reference Intervals for Captive‐Born Owl Monkeys (Aotus nancymae): Effects of Age and Sex

open access: yesJournal of Medical Primatology, Volume 55, Issue 4, August 2026.
ABSTRACT Background Owl monkeys (Aotus spp.) are a nocturnal nonhuman primate (NHP) native to central and South America that are used as infectious disease research models for human diseases, such as malaria and human immunodeficiency virus. Natural and infectious diseases may cause alterations in the hematology and serum biochemistry values, which ...
Sarah M. Kezar   +2 more
wiley   +1 more source

Characterization of gut microbiome in a captive colony of marmosets

open access: yesBerliner und Münchener Tierärztliche Wochenschrift, 2020
Although the microbiome signatures in primates are more similar to humans in comparison to microbiome of mice and rats, the study of microbiome in primate models and particularly in non-human primates such as the common marmoset (Callithrix jacchus) are ...
I J Knorr   +8 more
doaj   +1 more source

Diagnosis and treatment of macrocytic anemia in a perinatal common marmoset: a case report

open access: yesLaboratory Animal Research, 2022
Background The common marmoset is widely used in current biomedical research for various research fields. We observed macrocytic anemia in a perinatal common marmoset with gradual weight loss and diarrhea. The objective of this case report is to describe
Jong-Min Kim   +4 more
doaj   +1 more source

Clinical Management of Helicobacter Infection in Captive Baboons (Papio anubis and Papio hamadryas), and Isolation and Molecular Characterization of Three Novel Helicobacter Species

open access: yesJournal of Medical Primatology, Volume 55, Issue 4, August 2026.
ABSTRACT Background Helicobacter spp. are gastric or enterohepatic bacteria that can be commensal, opportunistic, or pathogenic. Few studies have evaluated Helicobacter spp. in baboons. Methods Twenty‐seven captive baboons were surveyed for Helicobacter spp. by fecal PCR, and a subset evaluated by culture.
Isabel A. Jimenez   +13 more
wiley   +1 more source

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