PMID- 28364790 OWN - NLM STAT- MEDLINE DCOM- 20170426 LR - 20220330 IS - 1165-158X (Electronic) IS - 0145-5680 (Linking) VI - 63 IP - 2 DP - 2017 Feb 28 TI - The effects of melatonin on oxidative stress and prevention of primordial follicle loss via activation of mTOR pathway in the rat ovary. PG - 100-106 LID - 10.14715/cmb/2017.63.2.16 [doi] AB - Mammalian Target of Rapamycin (mTOR) signaling pathway has important roles in the regulation of puberty onset, gonadotropin secretion, follicular development and ovulation. Melatonin (N-acetyl-5-methoxytryptamine) is a lipophilic hormone has multiple functions in regulating the fertility. Recent studies have shown that melatonin affected the number or maturation of follicles in the ovary. The aim of this study was to investigate the effects of melatonin on mTOR expression and quantity of follicle in rat ovary. In the present study, a total of 45 female rats were randomly divided into three groups. Group 1; Control (C), Group 2: Vehicle (V) and Group 3; Melatonin (M). Melatonin was administered intraperitoneally at a dose of 50 mg/kg/day for 30 days in Melatonin group. The effects of Melatonin on the expression of mTOR and downstream components were determined by Western Blot and Reverse Transcriptase PCR analysis. Upon Western Blot and RT-PCR evaluations, we detected higher expression and activation of mTOR, P70S6K, PKCalpha, PCNA and higher numbers of primordial follicles in melatonin group compared with V and C group. In addition to this results, melatonin decreased oxidative stress markers, such as MDA, on the contrary, levels of antioxidative markers, such as CAT and GPx, were increased by melatonin in rat ovary. This study indicated that melatonin may have a significant protective effect on primordial follicles and increase the expression of mTOR and downstream components in rat ovary. Melatonin treatment may have a beneficial effect on fertility. FAU - Behram Kandemir, Y AU - Behram Kandemir Y AD - Department of Anatomy, Akdeniz University Faculty of Medicine, Antalya, Turkey. FAU - Aydin, C AU - Aydin C AD - Department of Nursing, Bucak School of Health, Mehmet Akif Ersoy University, Burdur, Turkey. FAU - Gorgisen, G AU - Gorgisen G AD - Department of Medical Biology, Yuzuncu Yil University Faculty of Medicine, Van, Turkey. LA - eng PT - Journal Article DEP - 20170228 PL - France TA - Cell Mol Biol (Noisy-le-grand) JT - Cellular and molecular biology (Noisy-le-Grand, France) JID - 9216789 RN - 0 (Antioxidants) RN - 0 (Proliferating Cell Nuclear Antigen) RN - 4Y8F71G49Q (Malondialdehyde) RN - EC 1.11.1.6 (Catalase) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Ribosomal Protein S6 Kinases, 70-kDa) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 2.7.11.13 (Protein Kinase C-alpha) RN - JL5DK93RCL (Melatonin) SB - IM MH - Animals MH - Antioxidants/administration & dosage/pharmacology MH - Blotting, Western MH - Catalase/metabolism MH - Female MH - Gene Expression/drug effects MH - Glutathione Peroxidase/metabolism MH - Injections, Intraperitoneal MH - Malondialdehyde/metabolism MH - Melatonin/administration & dosage/*pharmacology MH - Ovarian Follicle/*drug effects/metabolism MH - Ovary/*drug effects/metabolism MH - Oxidative Stress/*drug effects MH - Proliferating Cell Nuclear Antigen/metabolism MH - Protein Kinase C-alpha/genetics/metabolism MH - Rats, Wistar MH - Reverse Transcriptase Polymerase Chain Reaction MH - Ribosomal Protein S6 Kinases, 70-kDa/genetics/metabolism MH - Signal Transduction/*drug effects/genetics MH - Superoxide Dismutase/metabolism MH - TOR Serine-Threonine Kinases/genetics/*metabolism OTO - NOTNLM OT - Follicle OT - Infertility. OT - Melatonin OT - Ovary OT - mTOR EDAT- 2017/04/04 06:00 MHDA- 2017/04/27 06:00 CRDT- 2017/04/03 06:00 PHST- 2017/03/26 00:00 [received] PHST- 2017/04/03 06:00 [entrez] PHST- 2017/04/04 06:00 [pubmed] PHST- 2017/04/27 06:00 [medline] AID - 10.14715/cmb/2017.63.2.16 [doi] PST - epublish SO - Cell Mol Biol (Noisy-le-grand). 2017 Feb 28;63(2):100-106. doi: 10.14715/cmb/2017.63.2.16.