23 citations
,
March 2016 in “American Journal of Primatology” This study found that female rhesus macaques who gained hair showed a significant reduction in hair cortisol concentrations, suggesting a connection between hair regrowth and stress levels.
21 citations
,
June 2016 in “Journal of Medical Primatology” This study observed that management practices affect alopecia and hair cortisol in captive rhesus monkeys, with variations in these effects between different facilities.
This study found that social hair plucking in captive rhesus macaques was associated with alopecia and exhibited patterns similar to both prosocial and aggressive behaviors.
This study found that social hair plucking in captive rhesus macaques may share traits with both prosocial and aggressive behaviors and is associated with alopecia and hair cortisol levels.
70 citations
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March 1980 in “Journal of Nutrition” Zinc deficiency in monkeys causes skin issues and reproductive problems, but supplementation reverses these effects.
33 citations
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January 2014 in “Pediatric Research”
25 citations
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September 1998 in “The Journal of Steroid Biochemistry and Molecular Biology” This study concludes that rhesus macaques are a suitable model for testing the pharmacological properties of finasteride and other 5aR inhibitors, due to their biochemical similarity to humans.
23 citations
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January 2010 in “Journal of Medical Primatology” This study found that alopecia in captive Rhesus macaques may be linked to chronic hypersensitivity dermatitis with CD4+ cell inflammation, possibly influenced by altered housing and reduced pathogen exposure.
16 citations
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April 2007 in “Journal of Medical Primatology” This study reports that a 14-year-old female rhesus monkey with alopecia universalis was found to have a T-cell-mediated autoimmune disease similar to human alopecia areata universalis.
11 citations
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May 2019 in “Journal of Medical Primatology” In this study, alopecia was more common among pregnant rhesus macaques compared to non-pregnant controls, and pregnancy was associated with increased hair cortisol levels.
10 citations
,
November 2015 in “American Journal of Primatology” This study found that rhesus macaques with inhibited or anxious temperaments had less alopecia, suggesting temperament may influence hair loss in these animals.
June 2026 in “Journal of Applied Animal Welfare Science” This study found that social hair plucking in captive rhesus macaques is linked to alopecia and possibly relates to stress in females.
February 2024 in “Animals” This study observed that alopecia in rhesus macaques follows a seasonal pattern, with the highest hair loss in spring, and varies with reproductive state, as pregnant females experience the most significant alopecia and lowest hair regrowth, which resumes postpartum.
29 citations
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June 2005 in “Journal of Zoo and Wildlife Medicine” This study concluded that coat damage in captive rhesus macaques is unlikely caused by parasitic, bacterial, or mycotic infections but may be linked to environmental or behavioral factors affecting hair growth.
7 citations
,
October 2015 in “American Journal of Primatology” The researchers observed that pregnancy in rhesus monkeys was associated with an increased incidence of hair loss, though the underlying reasons remain unclear.
4 citations
,
April 2016 in “American Journal of Primatology” This study found significant differences in alopecia rates among rhesus macaques based on their previous housing facilities, suggesting that factors beyond current environment may influence alopecia.
In this study of captive rhesus macaques, social hair plucking was related to kinship, showed characteristics of both prosocial and aggressive behaviors, and was associated with alopecia and hair cortisol concentrations in females.
This study observed that in captive rhesus macaques, social hair plucking is linked to alopecia and has kinship patterns similar to grooming, suggesting it may be socially influenced, though the health impacts and stress hormone (cortisol) changes involved remain uncertain.
51 citations
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November 2005 in “Journal of Medical Primatology” This study observed that hair loss in captive rhesus macaques varies with season, sex, and housing conditions, and is significantly correlated with HPA axis activity as indicated by faecal cortisol metabolites.
50 citations
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July 2018 in “Psychoneuroendocrinology” In this study, researchers found that tritiated cortisol was incorporated into the hair of rhesus monkeys primarily as cortisol and cortisone, as well as other metabolites, after systemic administration.
28 citations
,
May 2014 in “PubMed” This study found that increased hair cortisol levels, indicating stress, were associated with greater hair loss in captive rhesus macaques, although the causality of this relationship remains unclear.
20 citations
,
January 2002 in “Laboratory Animals” This study identified a compound heterozygous mutation in a hairless rhesus macaque, which was associated with skin abnormalities similar to those in hairless mice and humans with APL.
2 citations
,
January 2009 This study found that the hair cortisol measurement procedure was reliable, unaffected by the choice of tubes, and that hair cortisol concentration correlated moderately with the number of intense aggressions experienced.
May 2023 in “General and comparative endocrinology” This study found that hair cortisol concentrations in rhesus macaques were not significantly correlated with hair growth rate, suggesting that cortisol-mediated inhibition of hair growth does not explain higher cortisol levels within the non-stress range.
August 2020 in “International Journal of Clinical Practice” In this study, researchers found no statistically significant difference in blood group distribution between patients with androgenetic alopecia and a healthy population.
67 citations
,
February 1997 in “Teratology” This study demonstrated that high oral doses of finasteride caused external genital abnormalities in male rhesus monkey fetuses, but intravenous doses did not lead to abnormalities.
9 citations
,
March 2023 in “GeroScience”
February 2023 in “Journal of medical primatology” In this study, pair housing of rhesus macaques after intrafacility transfer reduced some undesirable behaviors and diarrhea compared to single housing, although no cortisol level differences were observed.
April 2024 in “Communications biology” The researchers reported that disrupting ATRA signaling by deleting RDHE genes in the hair follicle led to altered hair follicle cycles, composition, and gene expression, indicating RDHEs' role in hair follicle signaling coordination.
1 citations
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January 2018 in “Annals of medical research” This study found no significant association between ABO blood groups, Rhesus factor, and ferritin levels in women with telogen effluvium.