Evaluation of bilateral vasocystostomy for canine sterilization.

Autor: Nikpasand A; Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Nazloo Road, Urmia, P.O.Box:57155-1177, Iran. Electronic address: a.nikpasand@urmia.ac.ir., Behfar M; Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Nazloo Road, Urmia, P.O.Box:57155-1177, Iran. Electronic address: m.behfar@urmia.ac.ir., Hashemi-Asl M; Department of Surgery and Diagnostic Imaging, Faculty of Veterinary Medicine, Urmia University, Nazloo Road, Urmia, P.O.Box:57155-1177, Iran. Electronic address: mm.hashemi@urmia.ac.ir., Tehrani AA; Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Nazloo Road, Urmia, P.O.Box:57155-1177, Iran. Electronic address: aa.tehrani@urmia.ac.ir., Mohammadi V; Department of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Nazloo Road, Urmia, P.O.Box:57155-1177, Iran. Electronic address: v.mohammadi@urmia.ac.ir.
Jazyk: angličtina
Zdroj: Theriogenology [Theriogenology] 2020 Oct 15; Vol. 156, pp. 253-261. Date of Electronic Publication: 2020 Jul 18.
DOI: 10.1016/j.theriogenology.2020.07.015
Abstrakt: This study was aimed to evaluate canine vasocystotomy as a testosterone-preserving method of sterilization and investigate its potential post-operative complications. Five healthy adult male dogs underwent surgical procedure to transplant vasa deferentia to the urinary bladder. Under general anesthesia, caudal abdomen was opened and both vasa deferentia were ligated and transected. Then, the proximal free ends were sutured to mucosal layer of urinary bladder on its cranio-dorsal aspect. Serum testosterone level was measured on a weekly basis. Six-week postoperative assessments were performed including semen and urine sampling, ultrasound, contrast vasography, and tissue sampling. Statistical analyses revealed no significant differences in serum testosterone levels compared to its baseline value. Along with non-motile and broken spermatozoa, no cast or crystals were observed in urine samples. Semen analyses revealed azoospermia. No vasal obstruction or contrast leakage was observed in vasographs indicating bilateral patency in all dogs. Normal thickness of the bladder was found in ultrasounds. Histopathology showed normal testicular architecture and no inflammatory response was found in bladder or vas deferens following vasal transplantation. No significant change was found in testicular volume at the end of the study. This study suggested that vasocystostomy could be considered as an alternative method for canine sterilization with no significant changes in the testosterone concentrations and no evidence of postoperative complications. The preservation of testosterone could be regarded as an advantage and makes this approach favorable compared to the routine methods of sterilization especially for herding and guard dogs, because it prevents overpopulation while maintains the functionality.
Competing Interests: Declaration of competing interest All authors declare that there is no conflict of interest regarding the publication of this manuscript.
(Copyright © 2020 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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