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Effects of acupuncture on the levels of serum estradiol and pituitary estrogen receptor beta in a rat model of induced super ovulation.
Life Sciences 2018 March 16
AIMS: Acupuncture is frequently recommended as a complementary therapy for infertility. However, whether acupuncture can prevent early ovarian hyperstimulation syndrome has not been examined and its potential mechanisms are not well understood.
MAIN METHODS: Forty rats were randomized into four groups: Control, Ovarian Stimulation Model, Acupuncture, and Human Chorionic Gonadotropin (HCG). Serum estradiol, progesterone, testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) levels were measured by enzyme-linked immunosorbent assay. Pituitary ER mRNA and ERβ expression were detected by real-time PCR and western blotting respectively. The pathology of rat ovaries were observed by light microscopy.
KEY FINDINGS: We observed significantly lower estradiol levels in the Acupuncture group than in the Model group and increased LH levels in the HCG group than in Model and Acupuncture groups. Testosterone and FSH levels were significantly lower in the Acupuncture group than in the HCG group. Western blotting showed significantly lower pituitary ERβ expression in the Model group than in the Control group and higher expression in the Acupuncture group than in the Model group. Real-time PCR showed lower pituitary ER mRNA expression in the Acupuncture group than in the Model group. Hematoxylin and eosin staining showed a lower proportion of atretic follicles in Acupuncture and HCG groups than in Model and Control groups. Instead, Acupuncture and HCG groups showed growing and mature follicles.
SIGNIFICANCE: Our results demonstrate a relationship between acupuncture and the hypothalamic-pituitary-gonadal axis, and the potential mechanism underlying the preventative effects of acupuncture on the incidence of early ovarian hyperstimulation syndrome.
MAIN METHODS: Forty rats were randomized into four groups: Control, Ovarian Stimulation Model, Acupuncture, and Human Chorionic Gonadotropin (HCG). Serum estradiol, progesterone, testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) levels were measured by enzyme-linked immunosorbent assay. Pituitary ER mRNA and ERβ expression were detected by real-time PCR and western blotting respectively. The pathology of rat ovaries were observed by light microscopy.
KEY FINDINGS: We observed significantly lower estradiol levels in the Acupuncture group than in the Model group and increased LH levels in the HCG group than in Model and Acupuncture groups. Testosterone and FSH levels were significantly lower in the Acupuncture group than in the HCG group. Western blotting showed significantly lower pituitary ERβ expression in the Model group than in the Control group and higher expression in the Acupuncture group than in the Model group. Real-time PCR showed lower pituitary ER mRNA expression in the Acupuncture group than in the Model group. Hematoxylin and eosin staining showed a lower proportion of atretic follicles in Acupuncture and HCG groups than in Model and Control groups. Instead, Acupuncture and HCG groups showed growing and mature follicles.
SIGNIFICANCE: Our results demonstrate a relationship between acupuncture and the hypothalamic-pituitary-gonadal axis, and the potential mechanism underlying the preventative effects of acupuncture on the incidence of early ovarian hyperstimulation syndrome.
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