PMID- 32072235 OWN - NLM STAT- MEDLINE DCOM- 20200921 LR - 20200921 IS - 1437-9813 (Electronic) IS - 0179-0358 (Linking) VI - 36 IP - 4 DP - 2020 Apr TI - Effect of unilateral testicular torsion on contralateral testis in a rat model. PG - 529-536 LID - 10.1007/s00383-020-04626-y [doi] AB - OBJECTIVE: The aim of this study was to investigate the function of the contralateral testis after unilateral testicular torsion (UTT) and its possible mechanism. METHODS: 56 rats were randomly divided into four groups: Group A: Sham operation, Group B: Testicular torsion (TT)+normal saline (NS), Group C: Testicular torsion (TT)+cyclosporine, Group D: Testicular torsion (TT)+NG-Monomethyl-L-arginine (L-NMMA). The right testes were removed 1 week and 8 weeks after surgery, respectively. Biochemistry and histopathologic evaluations were used to evaluate the germ cell damage. RESULTS: Compared with Group A, the levels of malondialchehyche (MDA) and nitric oxide (NO)/nitricoxide synthase (NOS) were increased remarkably in Group B. Significant differences were shown between histopathological damages and density and motility of sperm in two groups. Compared with Group B, the levels of MDA and NO/NOS in Group D decreased significantly while mean seminiferous tubule diameter (MSTD) and mean testicular biopsy scoring (MTBS) maintained in a better condition. The levels of major histocompatibility complex (MHC) peptide-tetramer complex in Group C and Group D decreased significantly than Group B, while sperm density and motility were significantly higher than Group B. It was also known that the histopathological damages in Group C and Group D were less than those in Group B in the 8 weeks after operation. CONCLUSION: UTT can cause impairment of contralateral testicular function and decrease of spermatogenic function. The mechanism may be related to ischemia-reperfusion (IR) in early stage and autoimmune response in late stage. FAU - Xia, Zhaobo AU - Xia Z AD - Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China. FAU - Hu, Jun AU - Hu J AD - Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China. FAU - Han, Lei AU - Han L AD - Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, Yunnan, China. FAU - Xia, Qiongzhang AU - Xia Q AD - Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China. FAU - Shao, Fangbin AU - Shao F AD - Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China. FAU - Lin, Xiaokun AU - Lin X AUID- ORCID: 0000-0002-9347-9860 AD - Department of Pediatric Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, Zhejiang, China. linxk2000@163.com. LA - eng GR - Y20190085/Wenzhou Municipal Science and Technology Bureau/ GR - 2020KY645/Zhejiang Medical and Health Science Project/ PT - Journal Article DEP - 20200218 PL - Germany TA - Pediatr Surg Int JT - Pediatric surgery international JID - 8609169 SB - IM MH - Animals MH - Disease Models, Animal MH - Germ Cells/pathology MH - Humans MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - Reperfusion Injury/diagnosis/*etiology/physiopathology MH - Seminiferous Tubules/*pathology MH - Spermatic Cord Torsion/*complications/diagnosis/physiopathology MH - Spermatogenesis/*physiology MH - Testis/metabolism/*pathology/physiopathology OTO - NOTNLM OT - Autoimmune response OT - Contralateral OT - Ischemia-reperfusion OT - Testicular torsion EDAT- 2020/02/20 06:00 MHDA- 2020/09/22 06:00 CRDT- 2020/02/20 06:00 PHST- 2020/02/03 00:00 [accepted] PHST- 2020/02/20 06:00 [pubmed] PHST- 2020/09/22 06:00 [medline] PHST- 2020/02/20 06:00 [entrez] AID - 10.1007/s00383-020-04626-y [pii] AID - 10.1007/s00383-020-04626-y [doi] PST - ppublish SO - Pediatr Surg Int. 2020 Apr;36(4):529-536. doi: 10.1007/s00383-020-04626-y. Epub 2020 Feb 18.