Título
Muscarinic receptors type 1 and 2 in the preoptic-anterior hypothalamic areas regulate ovulation unequally in the rat oestrous cycle
Autor
Yadira L. López Ramírez
Kayro López Ramírez
ISABEL ARRIETA CRUZ
ANGELICA FLORES RAMIREZ
LUCIANO MENDOZA GARCES
Raúl Alejandro Librado Osorio
ROGER GUTIERREZ JUAREZ
ROBERTO DOMINGUEZ CASALA
MARIA ESTHER CRUZ BELTRAN
Nivel de Acceso
Acceso Abierto
Materias
MEDICINA Y CIENCIAS DE LA SALUD - (CTI) Ciencias médicas - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Ciencias clínicas - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Fenómenos fisiológicos reproductivos - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Reproducción - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Ovulación - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Receptores muscarínicos M1 - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Receptores muscarínicos M2 - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Reproductive physiological phenomena - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Reproduction - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Ovulation - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Receptor, muscarinic M1 - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)]) Receptor, muscarinic M2 - ([International Journal of Endocrinology (1687-8345) vol. 2017 (2017)])
Resumen o descripción
Abstract: Muscarinic receptors types 1 (m1AChR) and 2 (m2AChR) in the preoptic and anterior hypothalamus areas (POA-AHA) were counted, and the effects of blocking these receptors on spontaneous ovulation were analysed throughout the rat oestrous cycle. Rats in each phase of the oestrous cycle were assigned to the following experiments: (1) an immunohistochemical study of the number of cells expressing m1AChR or m2AChR in the POA-AHA and (2) analysis of the effects of the unilateral blockade of the m1AChR (pirenzepine, PZP) or m2AChR (methoctramine, MTC) on either side of the POA-AHA on the ovulation rate. The number of m2AChR-immunoreactive cells was significantly higher at 09:00 h on each day of the oestrous cycle in the POA-AHA region, while no changes in the expression profile of m1AChR protein were observed. The ovulation rate in rats treated with PZP on the oestrous day was lower than that in the vehicle group. Animals treated on dioestrous-1 with PZP or MTC had a higher ovulation rate than those in the vehicle group. In contrast, on dioestrous-2, the MTC treatment decreased the ovulation rate. These results suggest that m1AChR or m2AChR in the POA-AHA could participate in the regulation of spontaneous ovulation in rats.
Editor
Hindawi
Fecha de publicación
2017
Tipo de publicación
Artículo
Recurso de información
Formato
Adobe PDF
application/pdf
Fuente
International Journal of Endocrinology (1687-8345) vol. 2017 (2017)
Idioma
Inglés
Relación
https://www.hindawi.com/journals/ije/2017/4357080/
Repositorio Orígen
INSTITUTO NACIONAL DE GERIATRIA
Descargas
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