PMID- 25001019 OWN - NLM STAT- MEDLINE DCOM- 20160316 LR - 20211203 IS - 1933-7205 (Electronic) IS - 1933-7191 (Print) IS - 1933-7191 (Linking) VI - 22 IP - 1 DP - 2015 Jan TI - Caloric restriction promotes the reserve of follicle pool in adult female rats by inhibiting the activation of mammalian target of rapamycin signaling. PG - 60-7 LID - 10.1177/1933719114542016 [doi] AB - Caloric restriction (CR) is known to increase the number of primordial follicles and prolong the reproductive life span. However, how CR modulates follicular development is not well understood. In the present study, we examined the effects of CR on follicular development in rats and investigated the underlying mechanism. After 10 weeks of CR or high-fat diet, ovarian follicles at different developmental stages were examined by histological analysis. Plasma levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and estrogen (ESG) were measured, and the levels of mammalian target of rapamycin (mTOR), p70S6 kinase (p70S6K), and phosphorylated p70S6K in the ovary were detected by Western blot. The results showed that the reserve of follicle pool in CR rats was increased, accompanied by decreased level of phosphorylated p70S6K in the ovary, and decreased serum LH, FSH, and ESG levels. Taken together, these results suggest that CR may suppress ovarian follicular development and enhance the follicle pool reserve by inhibiting mTOR signaling. CI - (c) The Author(s) 2014. FAU - Li, Li AU - Li L AD - Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, China. FAU - Fu, Yu-cai AU - Fu YC AD - Laboratory of Cell Senescence, Shantou University Medical College, Shantou, China. FAU - Xu, Jin-jie AU - Xu JJ AD - Laboratory of Cell Senescence, Shantou University Medical College, Shantou, China. FAU - Lin, Xuan-hao AU - Lin XH AD - Department of Pathology of Shantou Central Hospital, Shantou, China. FAU - Chen, Xiao-chun AU - Chen XC AD - Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, China. FAU - Zhang, Xing-mei AU - Zhang XM AD - Department of Gynaecology and Obstetrics of HuiZhou Municipal Central Hospital, Huizhou, China. FAU - Luo, Li-li AU - Luo LL AD - Department of Gynaecology and Obstetrics of the First Affiliated Hospital, Shantou University Medical College, Shantou, China luolili6606@163.com. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140706 PL - United States TA - Reprod Sci JT - Reproductive sciences (Thousand Oaks, Calif.) JID - 101291249 RN - 0 (Estrogens) RN - 9002-67-9 (Luteinizing Hormone) RN - 9002-68-0 (Follicle Stimulating Hormone) RN - EC 2.7.1.1 (mTOR protein, rat) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animal Nutritional Physiological Phenomena MH - Animals MH - Body Weight MH - *Caloric Restriction MH - *Cell Proliferation MH - Diet, High-Fat MH - Estrogens/blood MH - Female MH - Follicle Stimulating Hormone/blood MH - Luteinizing Hormone/blood MH - Nutritional Status MH - Ovarian Follicle/*enzymology MH - Phosphorylation MH - Rats, Sprague-Dawley MH - Ribosomal Protein S6 Kinases, 70-kDa/metabolism MH - *Signal Transduction MH - TOR Serine-Threonine Kinases/*metabolism MH - Time Factors PMC - PMC4275449 OTO - NOTNLM OT - caloric restriction OT - estrogen OT - luteinizing hormone OT - mTOR OT - primordial follicle COIS- Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2014/07/09 06:00 MHDA- 2016/03/17 06:00 PMCR- 2016/01/01 CRDT- 2014/07/09 06:00 PHST- 2014/07/09 06:00 [entrez] PHST- 2014/07/09 06:00 [pubmed] PHST- 2016/03/17 06:00 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - 1933719114542016 [pii] AID - 10.1177_1933719114542016 [pii] AID - 10.1177/1933719114542016 [doi] PST - ppublish SO - Reprod Sci. 2015 Jan;22(1):60-7. doi: 10.1177/1933719114542016. Epub 2014 Jul 6.