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The Effects of Zinc Methionine on Reproductive and Thyroid Hormones in Rats With Polycystic Ovarian Syndrome Publisher



Torshizi FF1 ; Chamani M1 ; Khodaei HR2 ; Sadeghi AA1 ; Hejazi SH3 ; Heravi RM4
Authors
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Authors Affiliations
  1. 1. Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
  2. 2. Department of Animal Sciences, Islamic Azad University, Golpayegan Branch, Isfahan, Iran
  3. 3. Department of Parasitology and Mycology, Skin Disease and Leishmaniasis Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Animal Sciences, Ferdowsi University of Mashhad, Mashhad, Iran

Source: Advanced Biomedical Research Published:2020


Abstract

Background: Polycystic ovarian syndrome (PCOS) is an endocrine disorder in fertile women, which seems to be adversely affected by associated thyroid dysfunction. Zinc methionine (ZM) has positive effects on PCOS, but its concerted effects on PCOS and thyroid function have not been investigated. We evaluated the effects of ZM on reproductive and thyroid hormones and the number of follicles in rats with PCOS. Materials and Methods: This study was conducted on 45 female rats, using sesame oil as control; PCOS animals administered with 0, 25, 75, and 175 mg/kg BW of ZM. Serum concentrations of follicle-stimulating hormone (FSH), luteinizing hormone (LH), and thyroid function were investigated. Premature follicles (PMF), primary follicles (PF), preantral follicles (PAF), antral follicles (AF), corpus luteum (CL), and cystic follicles (CF) were assessed. Results: PCOS decreased the concentrations of FSH and free T4, but increased the levels of LH, TSH, and LH/FSH ratio (ALL P < 0.05). ZM at a dose of 75 and 175 mg increased the level of FSH, free T4, and decreased LH, TSH, and LH/FSH ratio (ALL P < 0.05). Induction of PCOS decreased PMF, PF, PAF, AF, and CL, but increased CF (P < 0.05). PCOS treated groups (75 and 175 mg/kg) increased these follicle numbers and decreased CF compared to ZM 25 mg/kg and PCOS groups (Both P < 0.05). Conclusions: Although the induction of PCOS had a negative effect on reproductive and thyroid hormones and follicle numbers, ZM treatment (75 and 175 mg/kg) overcame the negative effects. A high dosage of ZM can alleviate the hormonal and cysts disturbances occurring in PCOS. © 2020 Advanced Biomedical Research | Published by Wolters Kluwer - Medknow.
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