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Dose-dependent effects of cisplatin on the severity of testicular injury in Sprague Dawley rats: reactive oxygen species and endoplasmic reticulum stress

Authors Soni KK, Kim HK, Choi BR, Karna KK, You JH, Cha JS, Shin YS, Lee SW, Kim CY, Park JK

Received 17 August 2016

Accepted for publication 13 October 2016

Published 12 December 2016 Volume 2016:10 Pages 3959—3968


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Rammohan Devulapally

Peer reviewer comments 2

Editor who approved publication: Dr Anastasios Lymperopoulos

Kiran Kumar Soni,1 Hye Kyung Kim,2 Bo Ram Choi,1 Keshab Kumar Karna,1 Jae Hyung You,1 Jai Seong Cha,1 Yu Seob Shin,1 Sung Won Lee,3 Chul Young Kim,4 Jong Kwan Park1

1Department of Urology, Institute for Medical Sciences, Chonbuk National University Medical School – Biomedical Research and Institute and Clinical Trial Center for Medical Devices, Chonbuk National University Hospital, Jeonju, 2College of Pharmacy, Kyungsung University, Busan, 3Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University Medical School, Seoul, 4College of Pharmacy, Hanyang University, Ansan, Republic of Korea

Abstract: Cisplatin (CIS) is used in the treatment of cancer, but its nonspecific systemic actions lead to toxic effects on other parts of the body. This study investigated the severity of CIS toxicity by increasing its dose over a constant time period. Sprague Dawley rats were divided into five treatment groups and control group with CIS (2, 4, 6, 8, and 10 mg/kg) administered intraperitoneally for 5 days. The body and organs were weighed, epididymal sperm was counted, and sperm motility and sperm apoptosis were evaluated. Blood samples were evaluated for complete blood count, reactive oxygen and nitrogen species, malondialdehyde levels, and total testosterone. The testicular tissue was examined for steroidogenic acute regulatory protein and endoplasmic reticulum stress protein. Epididymal sperm was collected for CatSper Western blot. The toxic effects of different doses of CIS on the testis and kidney were compared histologically. The weights of body, testis, epididymis, prostate, seminal vesicle, and kidney; sperm count; sperm motility; steroidogenic acute regulatory protein level; and epididymal sperm count were significantly lower in the CIS-treated groups than in the control group. In contrast, sperm apoptosis, plasma reactive oxygen and nitrogen species, and malondialdehyde, testosterone, red blood cell, hematocrit, hemoglobin, and endoplasmic reticulum stress protein levels all increased. Though CIS effectively treats cancer, at an increased dose it is toxic and life-threatening to the genitourinary system and other parts of the body.

Keywords: cisplatin, testicular toxicity, oxidative stress, StAR protein, CatSper, endoplasmic reticulum stress

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