High Estradiol Differentially Affects the Expression of the Glucose Transporter Type 4 in Pelvic Floor Muscles of Rats

• Published in: International neurourology journal 2018, 22(3), , pp.161-168
• Main Authors: Carrasco-Ruiz, María de Los Ángeles, Hernández-Aragón, Laura G, Chávez-Ríos, Jesús Ramsés, Rodríguez-Antolín, Jorge, Pacheco, Pablo, Martínez-Gómez, Margarita, Cuevas-Romero, Estela, Castelán, Francisco
• Format: Article
• Language: English
• Subjects: Estradiol; Estrogen receptors; Glycogen; Metabolism; Original; Ovariectomy; 비뇨기과학
• ISSN: 2093-4777; 2093-6931; 2093-6931
• DOI: 10.5213/inj.1836116.058

To characterize the relationship between serum estradiol levels and the expression of glucose transporter type 4 (Glut4) in the pubococcygeus and iliococcygeus muscles in female rats. The muscles were excised from virgin rats during the metestrus and proestrus stages of the estrous cycle, and from sham and ovariectomized rats implanted with empty or estradiol benzoate-filled capsules. The expression of estrogen receptors (ERs) was inspected in the muscles at metestrus and proestrus. Relative Glut4 expression, glycogen content, and serum glucose levels were measured. Appropriate statistical tests were done to identify significant differences (P≤0.05). The pubococcygeus and iliococcygeus muscles expressed ERα and ERβ. Glut4 expression and glycogen content in the pubococcygeus muscle were higher at proestrus than at metestrus. No significant changes were observed in the iliococcygeus muscle. In ovariectomized rats, the administration of estradiol benzoate increased Glut4 expression and glycogen content in the pubococcygeus muscle alone. High serum estradiol levels increased Glut4 expression and glycogen content in the pubococcygeus muscle, but not in the iliococcygeus muscle.