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학술저널
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대한배뇨장애요실금학회 International Neurourology Journal International Neurourology Journal 제12권 제2호
발행연도
2008.1
수록면
121 - 126 (6page)

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Purpose: The aim of this study was to investigate the effects of testosterone deprivation on urinary bladder in male rabbits by proteomic analysis. Materials and Methods: New Zealand white male rabbits (2.5-3 kg) were divided into 2 group; control group with 5 rabbits and bilateral orchiectomized group, bilateral orchiectomized group was divided into post-operative 4 weeks group (group 1), and 8 weeks group (group 2) with 5 rabbits respectively. Bladder wall was excised partly at 4 or 8 weeks from the beginning of the experiment. Conventional proteomics was performed with high resolution 2-D gel electrophoresis followed by computational image analysis and protein identification using mass spectrometry. We decided to consider ‘significant’ if protein had 50% decreasing or 200% increasing expression rate. Results: Six proteins were significantly changed in orchiectomy group, compared to control group; serum albumin precursor, GABA transaminase, dimethylarginine dimethylaminohydrolase 2, serum/glucocorticoid regulated kinase and LOC304923 protein were over-expressed in both group 1 and group 2. Annexin A1 was significantly over-expressed in the group 2 only. Conclusion: An overexpression of Annexin A1 and GABA transaminase mean a processing of neuronal reactions to injury in orchiectomized rabbit bladder. Also an overexpression of dimethylarginine dimethylaminohydrolase 2 would increase NO synthesis and thereby promote re-endothelialization in the rabbit bladder after orchiectomy. Serum/glucocorticoid regulated kinase would relate to Na+ transport. Albumin precursor and LOC304923 protein are remained to further research. These data suggested that bilateral orchiectomy would make the urinary bladder unstable. However more information is needed in human bladder tissue. (J Korean Continence Soc 2008;12:121-6)

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