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Título : Differential expression and interaction of melatonin and thyroid hormone receptors with estrogen receptor α improve ovarian functions in letrozole-induced rat polycystic ovary syndrome
Autor : Ghosh, Hindole 
Rai, Seema 
Manzar, Md Dilshad 
Pandi Perumal, Seithikurippu R. 
Brown, Gregory M. 
Reiter, Russel J. 
Cardinali, Daniel Pedro 
Palabras clave : HIPERTIROIDISMOHIPOTIROIDISMOMELATONINAOVARIOSHORMONAS TIROIDEASGLANDULA TIROIDES
Fecha de publicación : 2022
Editorial : Elsevier
Cita : Ghosh, H., et al. Differential expression and interaction of melatonin and thyroid hormone receptors with estrogen receptor α improve ovarian functions in letrozole-induced rat polycystic ovary syndrome [en línea]. Life Sciences. 2022, 295 doi:10.1016/j.lfs.2021.120086 Disponible en: https://repositorio.uca.edu.ar/handle/123456789/15211
Resumen : Abstract: The objective of the present study was to investigate the effect of melatonin and L-thyroxine (T4) on the expression of various receptors, and some metabolic, reproductive, and gonadotropic hormones in letrozole-induced polycystic ovary syndrome (PCOS) in rats. - Material and methods: Assessment of gravimetric, hormonal profile and thyroid histology and relative expression of melatonin receptors (MT1, MT2) and estrogen receptor α (Erα) in thyroid and ovary, and type II iodothyronine deiodinase (Dio2) and thyroid hormone receptor α (TRα) in the ovary were performed using standard protocols. - Key findings: A significant increase in thyroid follicles numbers was noted in the hyperthyroid rat. T4 treatment to PCOS showed the expected increment in the circulating level of triiodothyronine (T3) and T4. Melatonin and T4 treatment of PCOS rats resulted in a significant decrease in the circulating level of T3 and T4. Hyperthyroid rats showed a decrement in plasma melatonin levels. However, T4 treatment to PCOS rats showed increased circulating melatonin levels, and a decrease in the circulating level of gonadotropins (LH and FSH), and testosterone. Melatonin treatment to PCOS-hyperthyroid rats resulted in the normal expression of ovarian and thyroid MT1 and ERα, receptors, which had been altered in PCOS and hyperthyroid rats, without any significant change in the MT2 receptor. - Significance: The present findings suggest a fine interplay and cross-talk via melatonin and its two receptors with ERα, TRα, and Dio2in thyroid and ovarian tissue during PCOS and hyperthyroidism pathogenicity.
URI : https://repositorio.uca.edu.ar/handle/123456789/15211
ISSN : 0024-3205
Disciplina: MEDICINA
DOI: 10.1016/j.lfs.2021.120086
Derechos: info:eu-repo/semantics/closedAccess
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