期刊
FERTILITY AND STERILITY
卷 90, 期 1, 页码 141-147出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.fertnstert.2007.05.065
关键词
connexin 43; occludin; experimental epididymal obstruction; experimental vasal obstruction; rat; testis
Objective: To describe the effects of epididymal and vasal ligation, in an experimental rat model, by using connexin 43 and occludin immunohistochemistry as well as transmission electron microscopy. Design: Comparative and controlled experimental research study. Setting: University animal research and histology laboratories in Turkey. Animal(s): Wistar male rats in experimental and control groups. Intervention(s): The control group underwent sham operation (n = 7). The first experimental group (n = 7) underwent unilateral epididymal ligation, whereas the second experimental group (n = 7) underwent unilateral vasal ligation to induce experimental epididymal and vasal obstruction models, respectively. All animals were then killed at 90 days. Main Outcome Measure(s): Immunohistochemical expression of connexin 43 and occludin for testicular tissues was determined after epididymal and vasal obstruction models. Ultrastructural morphological changes were examined by electron microscopy. Result(s): Results of the semiquantitative analysis revealed that expressions of both occludin and connexin 43 in the rat testis were decreased in the experimental groups compared with in the sham-operated group. However, changes after vasal ligation were more prominent. Ultrastructural examination confirmed decreased intercellular communication as well as increased cellular degeneration among the ipsilateral and contralateral testicular tissues. Conclusion(s): Immunohistochemical expression of occludin and connexin 43 were decreased in the testis after vasal and epididymal ligation when compared with the sham-operated group. Ultrastructural changes indicating cell degeneration were more prominent after vasal ligation.
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