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논문 기본 정보

자료유형
학술저널
저자정보
Xu-Dong Zhang (Guangzhou Medical University) Xiao-Yuan Guo (Guangdong Pharmaceutical University) Jing-Xuan Tang (University of Wisconsin-Madison) Lin-Na Yue (Guangdong Pharmaceutical University) Juan-Hui Zhang (Guangzhou Medical University) Tao Liu (Wuwei City Hospital) Yu-Xia Dong (Wuwei City Hospital) Song-Shan Tang (Guangdong Pharmaceutical University)
저널정보
대한약리학회 The Korean Journal of Physiology & Pharmacology The Korean Journal of Physiology & Pharmacology 제22권 제6호
발행연도
2018.11
수록면
637 - 647 (11page)
DOI
https://doi.org/10.4196/kjpp.2018.22.6.637

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Extra-hypothalamic growth hormone-releasing hormone (GHRH) plays an important role in reproduction. To study the treatment effect of Grin (a novel hGHRH homodimer), the infertility models of 85 male Chinese hamsters were established by intraperitoneally injecting 20 mg/kg of cyclophosphamide once in a week for 5 weeks and the treatment with Grin or human menopausal gonadotropin (hMG) as positive control was evaluated by performing a 3-week mating experiment. 2-8 mg/kg of Grin and 200 U/kg of hMG showed similar effect and different pathological characteristics. Compared to the single cyclophosphamide group (0%), the pregnancy rates (H-, M-, L-Grin 26.7, 30.8, 31.3%, and hMG 31.3%) showed significant difference, but there was no difference between the hMG and Grin groups. The single cyclophosphamide group presented loose tubules with pathologic vacuoles and significant TUNEL positive cells. Grin induced less weight of body or testis, compactly aligned tubules with little intra-lumens, whereas hMG caused more weight of body or testis, enlarging tubules with annular clearance. Grin presented a dose-dependent manner or cell differentiation-dependentincrease in testicular GHRH receptor, and did not impact the levels of blood and testicular GH, testosterone. Grin promotes fertility by proliferating and differentiating primitive cells through up-regulating testicular GHRH receptor without triggering GH secretion, which might solve the etiology of oligoasthenozoospermia.

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