Effects of melatonin on partial unilateral ureteral obstruction induced oxidativeinjury in rat kidney        
Yazarlar (7)
Prof. Dr. Doğan ATILĞAN Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Bekir S. Parlaktas
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Nihat Uluocak
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Fikret Erdemir
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Fatih Firat
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Unal Erkorkmaz
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Oguzhan Saylan
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale
Dergi Adı Urology Annals
Dergi ISSN 0974-7796 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler index copernicus
Makale Dili İngilizce
Basım Tarihi 05-2012
Cilt No 4
Sayı 2
Sayfalar 89 / 93
DOI Numarası 10.4103/0974-7796.95552
Özet
Aim: This experimental study was designed to produce ischemia-reperfusion injury in rat kidney by performing partial unilateral ureteral obstruction (PUUO) and investigated the effects of melatonin on the levels of oxidative injury parameters. Materials and Methods: Twenty-four adult male rats were randomly divided into three groups as follows; control group (Group 1); only nephrectomy and blood (5 ml) drawn from vena cava inferior, PUUO group (Group 2); PUUO (10 days)+ipsilateral nephrectomy after recovery of PUUO+blood from vena cava inferior VCI, melatonin treated group (Group 3); PUUO (10 days)+melatonin (1/2 hr before release, 50 mg/kg, ip)+ipsilateral nephrectomy after recovery of PUUO+blood from VCI. The left ureter was embedded into the psoas muscle to create PUUO. After 10 days, PUUO was recovered and ipsilateral nephrectomies were performed for biochemical analysis of superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and protein carbonyl (PC) in the tissues and blood was drawn from inferior vena cava to study the same parameters in systemic circulation. The results were compared statistically. Results: The blood levels of MDA, NO, and PC were increased in the PUUO group in comparison to the sham-operated group (P<0.05). Melatonin treatment reduced MDA, NO, and PC levels in blood after PUUO recovery, but statistically significance consisted only for MDA and NO (P<0.05). The antioxidant enzyme activities (SOD, GSH-Px) were increased in the PUUO group (P<0.05). Melatonin treatment reduced SOD and GSH-Px activities in comparison with the sham-operated control group (P<0.05). Similarly, renal tissue levels of MDA, NO, and PC were increased in the PUUO group in comparison with the sham-operated group (P<0.05). Melatonin treatment ameliorated MDA, NO, and PC levels in renal tissue after PUUO recovery only MDA was statistically significant (P<0.05). Antioxidant enzyme activities (SOD, CAT, and GSH-Px) were increased in the PUUO group. Melatonin treatment caused reduction in SOD, CAT, and GSH-Px activities in comparison to the sham-operated control group (P<0.05). Conclusion: The results of this study showed that experimentally induced PUUO caused oxidative stress in rat kidney and melatonin treatment reduced oxidative stress and therefore may have a preventive effect on PUUO induced oxidative kidney damage in rats.
Anahtar Kelimeler
Kidney | melatonin | obstruction | oxidative stress | ureter