| Down-regulation of CatSper1 channel in epididymal spermatozoa contributes to the pathogenesis of asthenozoospermia, whereas up-regulation of the channel by Sheng-Jing-San treatment improves the sperm motility of asthenozoospermia in rats. | |
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MedLine Citation:
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PMID: 23148924 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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OBJECTIVE: To determine the expression of CatSper1 channel in epididymal spermatozoa in a rat model of asthenozoospermia, induced by cyclophosphamide (CP), and further examine the effects of soluble granules of Sheng-Jing-San (SJS), a traditional Chinese medicine recipe, on CatSper1 expression and sperm motility in the CP-induced asthenozoospermic rats. DESIGN: Placebo-controlled, randomized trial. SETTING: Neuroscience Research Institute, Peking University, China. ANIMAL(S): Sexually mature male Sprague-Dawley rats (n = 60). INTERVENTION(S): In the CP group, CP at the dose of 35 mg/kg intraperitoneally injected into rats once a day for 7 days; in the normal saline (NS) group, 0.9% saline solution was injected as control. MAIN OUTCOME MEASURE(S): Sperm motility and count were evaluated by computer-assisted sperm assay (CASA); protein and mRNA expression of CatSper1 channel in epididymal spermatozoa was determined by Western blotting and quantitative real-time RT-PCR, respectively. RESULT(S): The rats were randomly divided into five groups with 12 rats in each group: CP, normal saline (NS), CP + SJS, CP + NS, and treatment naïve. In the CP + SJS group, after the last injection of CP, SJS at a dose of 30 mg/kg was intragastrically administrated to rats once a day for 14 days; in CP + NS group, saline solution instead of SJS was administrated as control. In the treatment naïve group, rats were normally fed for 21 days as controls. We found a statistically significant reduction of the CatSper1 channel, which is associated with an impairment of sperm motility in the epididymal spermatozoa of CP-induced asthenozoospermic rats. Soluble granules of SJS could dramatically restore the CP-induced down-regulation of CatSper1 in epididymal spermatozoa, which greatly improved the sperm motility in the asthenozoospermic rats. CONCLUSION(S): Down-regulation of the CatSper1 channel in epididymal spermatozoa likely contributes to the pathogenesis of asthenozoospermia, whereas up-regulation of the channel by SJS improves sperm motility and thus can be used as an effective therapeutic strategy for the treatment of male infertility diagnosed with asthenozoospermia. |
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Authors:
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Ya-Nan Wang; Bo Wang; Ming Liang; Cai-Yan Han; Bin Zhang; Jie Cai; Wei Sun; Guo-Gang Xing |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-11-10 |
Journal Detail:
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Title: Fertility and sterility Volume: - ISSN: 1556-5653 ISO Abbreviation: Fertil. Steril. Publication Date: 2012 Nov |
Date Detail:
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Created Date: 2012-11-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372772 Medline TA: Fertil Steril Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Neuroscience Research Institute and Department of Neurobiology, Peking University, Beijing, People's Republic of China; Reproductive Medical Center, the Second Affiliated Hospital of Shandong University of Chinese Medicine, Ji'nan, People's Republic of China. |
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