Effects of Seasonality and Pregnancy on Hair Loss and Regrowth in Rhesus Macaques
Abstract
:Simple Summary
Abstract
1. Introduction
2. Materials and Methods
2.1. Subjects and Housing
2.2. Alopecia and Hair Regrowth Assessment
2.3. Reproductive Status
2.4. Data Analysis
3. Results
3.1. Summary of Data Collected
3.2. Alopecia Severity
3.3. Presence of Hair Regrowth
3.4. Time to Regrow Hair Postpartum
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Total |
---|---|---|---|---|---|---|---|---|---|
Males > 3 years | 3 | 6 | 7 | 1 | 3 | 2 | 6 | 5 | 33 |
Females > 3 years | 25 | 29 | 17 | 34 | 23 | 23 | 20 | 37 | 208 |
Males & females < 3 years | 20 | 26 | 19 | 32 | 29 | 26 | 24 | 21 | 197 |
Total | 48 | 61 | 43 | 67 | 55 | 51 | 50 | 63 | 438 |
Percent of Body Affected by Alopecia | Alopecia Score |
---|---|
0 | 0 |
1–9 | 1 |
10–24 | 2 |
25–50 | 3 |
51–74 | 4 |
75–100 | 5 |
Females | |||||||
---|---|---|---|---|---|---|---|
Month | Male | Nonpregnant | 1st Trimester | 2nd Trimester | 3rd Trimester | Postpartum w/o Infant | Postpartum w/Infant |
December | 13 | 126 | 47 | 11 | 1 | ||
January | 14 | 78 | 47 | 42 | 3 | 1 | |
February | 13 | 68 | 22 | 50 | 23 | 1 | |
March | 14 | 70 | 8 | 37 | 41 | 5 | |
April | 16 | 69 | 3 | 18 | 48 | 3 | 21 |
May | 26 | 78 | 5 | 31 | 13 | 38 | |
June | 30 | 77 | 1 | 11 | 16 | 58 | |
July | 28 | 71 | 6 | 16 | 62 | ||
August | 27 | 69 | 1 | 18 | 66 | ||
September | 25 | 69 | 1 | 18 | 64 | ||
October | 27 | 80 | 16 | 10 | 46 | ||
November | 26 | 68 | 46 | 6 | 2 | 25 |
Estimate | Std. Error | p-Value (* Indicates Value < 0.05) | |
---|---|---|---|
Intercept | −0.31 | 0.10 | <0.01 * |
Study month | 0.24 | 0.02 | <0.001 * |
Study month squared | −0.02 | <0.001 | <0.001 * |
1st trimester pregnant | −0.04 | 0.10 | 0.71 |
2nd trimester pregnant | 0.07 | 0.13 | 0.57 |
3rd trimester pregnant | 0.30 | 0.23 | 0.18 |
Male | 0.18 | 0.16 | 0.26 |
Postpartum without infant | 1.75 | 0.37 | <0.001 * |
Postpartum with infant | 1.38 | 0.19 | <0.001 * |
Study month × 1st trimester pregnant | 0.03 | 0.01 | 0.04 * |
Study month × 2nd trimester pregnant | 0.06 | 0.03 | 0.03 * |
Study month × 3rd trimester pregnant | 0.12 | 0.04 | <0.01 * |
Study month × male | −0.05 | 0.02 | <0.01 * |
Study month × postpartum without infant | −0.21 | 0.04 | <0.001 * |
Study month × postpartum rearing infant | −0.13 | 0.02 | <0.001 * |
Estimate | Std. Error | p-Value (* Indicates Value < 0.05) | |
---|---|---|---|
Intercept | −4.52 | 0.31 | <0.001 * |
Study month | 1.43 | 0.09 | <0.001 * |
Study month squared | −0.10 | 0.07 | <0.001 * |
1st trimester pregnant | 0.23 | 0.22 | 0.31 |
2nd trimester pregnant | −0.53 | 0.24 | 0.02 * |
3rd trimester pregnant | −2.15 | 0.27 | <0.001 * |
Male | −0.63 | 0.19 | <0.001 * |
Postpartum without infant | −0.36 | 0.25 | 0.15 |
Postpartum with infant | −0.06 | 0.15 | 0.69 |
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Heagerty, A.; Wales, R.A.; Coleman, K. Effects of Seasonality and Pregnancy on Hair Loss and Regrowth in Rhesus Macaques. Animals 2024, 14, 747. https://doi.org/10.3390/ani14050747
Heagerty A, Wales RA, Coleman K. Effects of Seasonality and Pregnancy on Hair Loss and Regrowth in Rhesus Macaques. Animals. 2024; 14(5):747. https://doi.org/10.3390/ani14050747
Chicago/Turabian StyleHeagerty, Allison, Rebecca A. Wales, and Kristine Coleman. 2024. "Effects of Seasonality and Pregnancy on Hair Loss and Regrowth in Rhesus Macaques" Animals 14, no. 5: 747. https://doi.org/10.3390/ani14050747
APA StyleHeagerty, A., Wales, R. A., & Coleman, K. (2024). Effects of Seasonality and Pregnancy on Hair Loss and Regrowth in Rhesus Macaques. Animals, 14(5), 747. https://doi.org/10.3390/ani14050747