Abstract:
OBJECTIVE:To investigate the possible protective role of insulin-like growth factor-1 (IGF-1, reported to have a protective effect in experimental models of hypoxic ischaemia), and the involvement of apoptotic cell death in a model of torsion/detorsion of the rat testis. MATERIALS AND METHODS:Adult male Wistar rats were divided into five groups of five rats each. Group 1 underwent a sham operation as a control; in group 2 the testis was twisted and in group 3 then untwisted; in group 4 IGF-1 was injected subcutaneously just before bilateral torsion, and then the right testis removed after 4 h and the left after 24 h; in group 5, IGF-1 was injected immediately after bilateral detorsion and then the testes removed as in group 4. Both testicles were examined histologically, with apoptosis detected using the in situ DNA fragmentation (TUNEL) system, with combined enzymology and immunohistochemistry techniques. RESULTS:In groups 2 (torsion) and 3 (detorsion), light microscopy of the testis showed some degenerative changes in the germ cells. Compared to group 1, apoptosis was more significant in group 3 than in the other groups. Group 4 (torsion/IGF-1) had a similar number of apoptotic germ cells as in group 2 (torsion) after 24 h, but fewer than the same group after 4 h. In group 5 (detorsion/IGF-1), apoptosis was reduced by IGF-1 significantly more than in group 3 (P < 0.05). Apoptosis was significantly less in spermatids in group 5 than in group 3 (P < 0.05). CONCLUSIONS:IGF-1 seems to lower the levels of germ cell apoptosis, which may be important for protecting the testes from torsion/detorsion injury. Further clinical studies are needed to evaluate this protective effect in testicular torsion/detorsion.
journal_name
BJU Intjournal_title
BJU internationalauthors
Ozkurkcugil C,Yardimoglu M,Dalcik H,Erdogan S,Gokalp Adoi
10.1111/j.1464-410X.2004.04787.xkeywords:
subject
Has Abstractpub_date
2004-05-01 00:00:00pages
1094-7issue
7eissn
1464-4096issn
1464-410Xpii
BJU4787journal_volume
93pub_type
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doi:
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更新日期:1999-08-01 00:00:00
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更新日期:2010-06-01 00:00:00
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更新日期:2011-10-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2013-09-01 00:00:00
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更新日期:1999-08-01 00:00:00
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更新日期:2013-06-01 00:00:00