ABSTRACT
The aim of this study was to evaluate the acute effect of high-dose acetylsalicylic acid (ASA) on kidney and testis, and the potential protective and therapeutic effects of melatonin on ASA-related pathology. A total of 40 rats were randomly divided into the following 5 groups (n = 8): group 1: control, not given any drug; group 2: only 200 mg/kg ASA was given; group 3: 5 mg/kg melatonin was given 45 min before administering 200 mg/kg ASA; group 4: 5 mg/kg melatonin was given 45 min after administering 200 mg/kg ASA; and group 5: only 5 mg/kg melatonin was given. The histopathological changes and the biochemical findings; such as malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), reduced glutathione (GSH), and blood urea nitrogen (BUN) as well as serum creatinine (Cr) levels were evaluated. ASA significantly increased MDA levels in both kidney and testis, whereas it significantly decreased the values of SOD, CAT, GPX, and GSH in kidney and CAT levels in testis. Melatonin significantly decreased MDA levels in kidney and ameliorated it in testis, whereas it caused elevation in the levels of antioxidants. BUN and Cr levels were higher after ASA, whereas these levels were diminished after melatonin administration. The improvement obtained by melatonin on ASA-induced histological alterations was more prominent when it was used after ASA in kidney and before ASA in testis. In this study, we demonstrated the beneficial effect of melatonin on high-dose ASA-related pathology of kidney and testis for the first time.
Subject(s)
Aspirin/pharmacology , Kidney/drug effects , Melatonin/pharmacology , Testis/drug effects , Animals , Blood Urea Nitrogen , Body Weight/drug effects , Catalase/metabolism , Creatine/blood , Glutathione/metabolism , Glutathione Peroxidase/metabolism , Kidney/enzymology , Kidney/metabolism , Kidney/pathology , Male , Malondialdehyde/metabolism , Organ Size/drug effects , Rats , Rats, Wistar , Superoxide Dismutase/metabolism , Testis/enzymology , Testis/metabolism , Testis/pathologyABSTRACT
AIM: Ischemia/reperfusion (IR) injury (IRI) in liver transplant patients may negatively affect graft function. Although ß-glucan protects kidneys against IRI, its effect on the liver is unknown. This study sought to investigate ß-glucan effects on oxidative damage to the liver after IRI in rats. MATERIALS AND METHODS: Thirty-two rats were randomly divided into 4 experimental groups n = 8 in each group: sham, IR, ß-glucan and IR + ß-glucan. ß-Glucan (50 mg.kg(-1) . day(-1)) was orally administered for 10 days to rats in the ß-glucan and IR + ß-glucan groups. The rats in the IR and IR + ß-glucan groups were subjected to ischemia and reperfusion (IR) for 60 minutes each. All rats were killed on day 11 to evaluate histological changes as well as tissue levels of oxidants and antioxidants. RESULTS: Malondialdehyde (MDA) levels were significantly higher in the IR than the sham group (P = .001). MDA level was significantly higher in the IR group than in the IR + ß-glucan group (P = .001). The levels of tissue antioxidant markers (superoxide dismutase [SOD], glutathione-peroxidase [GPx], and catalase [CAT]) were significantly lower in the IR group than in the sham group (P < .05). SOD and GPx levels did not differ significantly between the IR and IR + ß-glucan groups. CAT activity was significantly higher in the IR than the IR + ß-glucan group (P = .001). Histological tissue damage was reduced in the IR + ß-glucan than the IR group. CONCLUSION: Liver IRI is an inevitable problem during liver surgery. Our results suggested that ß-glucan pretreatment suppressed oxidative stress and increased antioxidant levels in an rat model of liver IRI.
