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首页> 美国卫生研究院文献>other >Differential Relationships Between Chronic Hormone Profiles in Pregnancy and Maternal Investment in Rhesus Monkey Mothers With Hair Loss in the Neonatal Period
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Differential Relationships Between Chronic Hormone Profiles in Pregnancy and Maternal Investment in Rhesus Monkey Mothers With Hair Loss in the Neonatal Period

机译：新生期脱发的恒河猴母亲怀孕期间慢性激素水平与母体投资之间的差异关系

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Hair loss is commonly used as an indicator of well being in primate facilities, yet it has been shown to also occur in otherwise healthy pregnant and postpartum females. There is significant variability in the incidence of hair loss during these important developmental periods, reasons for which remain unclear. We studied female rhesus monkeys (Macaca mulatta, n = 47) with and without hair loss in pregnancy/postpartum. We hypothesized that, similar to previously published reports, pregnancy would result in an increased likelihood of hair loss, and that hair loss would be correlated with higher hair cortisol concentrations (HCCs). We further hypothesized that hair loss among pregnant females is relatedto differential maternal investment. We studied a subset of monkeys (n = 26) from mid-to-late pregnancy through peak lactation, some of which exhibited hair loss in the perinatal period (n = 15), and some of which did not (n = 11). We examined fetal measurements, infant birth weight, infant growth rate, and milk yield volume (MYV) in the first 30 days as indices of investment. We found that pregnant monkeys showed a greater incidence of hair loss across the study year (x2(2) = 6.55, P = 0.038), and that mothers with hair loss had significantly higher HCCs in pregnancy than those without (F(2,28) = 3.8, P = 0.017, hp 2 = 0.21). HCCs in pregnancy were correlated with severity of hair loss in the neonatal period (r(37) = 0.42, P = 0.008). Moreover, HCCs in pregnancy were positively correlated with infant birth weight (r(12) = 0.56, P = 0.038), infant growth rate (r(12) = 0.64, P 0.014), and MYV (r(11) 0.85,P < 0.001) for alopecic but not non-alopecic mothers. These mothers did not differ in fetal measurements, infantbirth weight/growth rate, orMYV. Our results suggest that hair loss in some monkeys, especially during the birthing season, may be a signal of greater physiological stress during pregnancy and differential investment by mothers to their offspring. Am. J. Primatol. 79:e22489, 2017.
机译：脱发通常在灵长类动物设施中用作健康指标，但据显示，脱发也发生在其他健康的孕妇和产后女性中。在这些重要的发育时期，脱发的发生率存在很大差异，其原因尚不清楚。我们研究了在怀孕/产后有无脱发的雌性恒河猴（猕猴，n = 47）。我们假设，类似于以前发表的报告，怀孕会导致脱发的可能性增加，并且脱发与更高的头发皮质醇浓度（HCCs）相关。我们进一步假设怀孕女性的脱发与母体投资差异有关。我们研究了从中期妊娠到哺乳高峰期的猴子（n = 26）的一部分，其中一些在围产期表现出脱发（n = 15），而有些则没有（n = 11）。我们检查了前30天的胎儿测量数据，婴儿出生体重，婴儿生长率和产奶量（MYV），作为投资指标。我们发现，在整个研究年度中，怀孕的猴子表现出较高的脱发发生率（x 2 （2）= 6.55，P = 0.038），而有脱发的母亲在怀孕时的HCC明显高于那些没有（F（2,28）= 3.8，P = 0.017，hp 2 = 0.21）。怀孕期间的HCC与新生儿期间脱发的严重程度相关（r（37）= 0.42，P = 0.008）。此外，妊娠期HCC与婴儿出生体重（r（12）= 0.56，P = 0.038），婴儿生长率（r（12）= 0.64，P 0.014）和MYV（r（11）0.85，P）正相关。 <0.001）（对于非秃发性母亲除外）。这些母亲在胎儿测量，分娩体重/生长率或MYV方面无差异。我们的研究结果表明，某些猴子，特别是在分娩季节的猴子，脱发可能是怀孕期间生理压力增加以及母亲对其后代进行不同投资的信号。上午。 J. Primatol。 79：e22489，2017。

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