TY - JOUR
T1 - Exposure of female macaques to western-style diet with or without chronic T in vivo alters secondary follicle function during encapsulated 3-dimensional culture
AU - Xu, Jing
AU - McGee, Whitney K.
AU - Bishop, Cecily V.
AU - Park, Byung S.
AU - Cameron, Judy L.
AU - Zelinski, Mary B.
AU - Stouffer, Richard L.
N1 - Publisher Copyright:
Copyright © 2015 by the Endocrine Society
PY - 2015/3/1
Y1 - 2015/3/1
N2 - Increased adiposity and hyperandrogenemia alter reproductive parameters in both animal models and women, but their effects on preantral follicles in the ovary remain unknown. We recently reported that Western-style diet (WSD) consumption over 1 year, with or without chronic exposure to elevated circulating T, increased the body fat percentage, elicited insulin resistance, suppressed estradiol and progesterone production, as well as altered the numbers, size, and dynamics of antral follicles in the ovary during the menstrual cycle in female macaques. Therefore, experiments were designed tocomparetheWSDandWSD+T effects to age-matched controlsonthe survival, growth, and function of isolated secondary follicles during 5 weeks of encapsulated 3-dimensional culture. Follicle survival significantly declined in the WSD and WSD+T groups compared with the control (CTRL) group. Although media progesterone levels were comparable among groups, androstenedione and estradiol levels were markedly reduced in the WSD and WSD+T groups compared with the CTRL group at week 5. Anti-Müllerian hormone levels peaked at week 3 and were lower in the WSD+T group compared with the WSD or CTRL group. Vascular endothelial growth factor levels also decreased atweek5 intheWSD+T group compared with theWSDor CTRL group. Afterhuman chorionic gonadotropin exposure, only antral follicles developed from the CTRL group yielded metaphase II oocytes. Thus, WSD with or without T exposure affects the cohort of secondary follicles in vivo, suppressing their subsequent survival, production of steroid hormones and local factors, as well as oocyte maturation in vitro.
AB - Increased adiposity and hyperandrogenemia alter reproductive parameters in both animal models and women, but their effects on preantral follicles in the ovary remain unknown. We recently reported that Western-style diet (WSD) consumption over 1 year, with or without chronic exposure to elevated circulating T, increased the body fat percentage, elicited insulin resistance, suppressed estradiol and progesterone production, as well as altered the numbers, size, and dynamics of antral follicles in the ovary during the menstrual cycle in female macaques. Therefore, experiments were designed tocomparetheWSDandWSD+T effects to age-matched controlsonthe survival, growth, and function of isolated secondary follicles during 5 weeks of encapsulated 3-dimensional culture. Follicle survival significantly declined in the WSD and WSD+T groups compared with the control (CTRL) group. Although media progesterone levels were comparable among groups, androstenedione and estradiol levels were markedly reduced in the WSD and WSD+T groups compared with the CTRL group at week 5. Anti-Müllerian hormone levels peaked at week 3 and were lower in the WSD+T group compared with the WSD or CTRL group. Vascular endothelial growth factor levels also decreased atweek5 intheWSD+T group compared with theWSDor CTRL group. Afterhuman chorionic gonadotropin exposure, only antral follicles developed from the CTRL group yielded metaphase II oocytes. Thus, WSD with or without T exposure affects the cohort of secondary follicles in vivo, suppressing their subsequent survival, production of steroid hormones and local factors, as well as oocyte maturation in vitro.
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U2 - 10.1210/en.2014-1711
DO - 10.1210/en.2014-1711
M3 - Article
C2 - 25545382
AN - SCOPUS:84923879284
SN - 0013-7227
VL - 156
SP - 1133
EP - 1142
JO - Endocrinology
JF - Endocrinology
IS - 3
ER -