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    Protective Effect of Krill Oil Against Gentamicin Induced Oxidative Stress Mediated Nephrotoxicity in Rats
    (2022) Şahin, Yaşar; Alçığır, Mehmet Eray; Şenol, Ali; Özden, Hüseyin; Ekici, Hüsamettin; Yıldırım, Ebru; Çınar, Miyase
    This study aimed to evaluate the protective effect of krill oil against nephrotoxicity caused by gentamicin. Distilled water was given orally to the control and second groups (GI) for seven days while 500 mg/kg krill oil was given to the third (GII), fourth (GIII) groups. In addition, isotonic saline was administered subcutaneously to the control and GIII groups throughout the study, while 80 mg/kg gentamicin was administered to the GI, and GII groups. Alanine aminotransferase (ALT) and gamma glutamyltransferase (GGT) peptidase, total cholesterol, urea, and creatinine levels in plasma and, malondialdehyde (MDA) and total antioxidant status (TAS) levels in both plasma and kidney tissue supernatant were evaluated. Histopathological changes in tubules and glomeruli and vascular changes were evaluated by scoring. Urea level and ALT activity were found to be significantly lower in the GII and GIII groups compared to the GI group (p<0.001; p?0.001). As a result, it was observed that degenerative damage and glomerular changes in the tubule at the histological level mediated by oxidative stress were consistent with the increase in ALT, urea, and MDA levels. In this respect, it is suggested that krill oil can be used as a nephroprotective food supplement to contribute to treatment in cases of toxicity.
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    Protective effect of resveratrol on the kidney in rats under immunosuppression with tacrolimus
    (Selçuk BAŞAK, 2021) Özden, Hüseyin; Gömeç, Muhammed; Şahin, Yaşar; Karaca, Gökhan; Bulut, Huri; Kilitci, Asuman
    Background/Aim: Tacrolimus is a commonly used agent for immunosuppression in organ transplantation with known nephrotoxic effects. We think that kidney-sparing therapy should be added to current treatment protocols. We aimed to observe the protective effect of resveratrol (RSV) against the adverse effects of tacrolimus (TAC) on rat kidneys. Methods: Twenty-four rats were randomly divided into the following three groups of eight rats each: Control, TAC, and RSV. The control group was not treated in any way. Tacrolimus was administered to the TAC group. In addition to tacrolimus use, resveratrol was administered to the RSV group. At the end of the experiment, one kidney was used for histopathological examination and the other, for biochemical examination. Results were analyzed statistically. Results: IL-1β, IL-6, TNF-Alpha levels in the control group were significantly lower than those in TAC and RSV groups (IL-1; P<0.001, P<0.001, IL-6; P<0.001 P=0.002, TNF-Alpha; P<0.001, P<0.001), and those in the RSV group were significantly lower than those in the TAC group (IL-1: P=0.032, IL-6: P=0.001 TNF-Alpha: P=0.026). TAS levels of the control group were significantly higher than those of the TAC group (P=0.030). TOS and OSI levels of the control group were significantly lower than those of the TAC and RSV groups (TOS: P=0.002, P=0.012, OSI: P=0.001, P=0.004). In histopathological evaluation, the TAC group showed the highest levels of fibrosis. The differences between the control and TAC groups and the TAC and RSV groups were statistically significant (P=0.003, P=0.003). Conclusion: Resveratrol has a protective effect against the adverse effects of tacrolimus on the kidney, which may be because of its anti-inflammatory and antioxidant properties.
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    The Healing Effect of Resveratrol and Platelet Rich Plasma in Corrosive Esophagitis Model in Rats
    (Sivas Cumhuriyet University, 2022) Özden, Hüseyin; Gömeç, Muhammed; Şahin, Yaşar; Karaca, Gökhan; Bulut, Huri; Kilitci, Asuman
    Background: Corrosive esophageal burns have high morbidity and mortality. The effective treatment is controversial. In our study, we aimed to examine the effects of resveratrol (RSV) and platelet rich plasma (PRP) on healing in the corrosive esophagitis model in rats. Material and methods: A total of 24 rats were randomly divided into 4 groups each as esophagitis, control, PRP and RSV groups. No treatment was administered to the control group. The esophagitis model was induced in the esophagitis and treatment groups. The esophagitis group was not treated. PRP group was treated with PRP, RSV group was treated with RSV. Pathological and biochemical examinations were performed from distal esophagitis. Results: The highest tissue IL-1, IL-6, and TNF-α levels were observed in the esophagitis group. The lowest tissue IL-1, IL-6, and TNF-α levels were noted in the control group. The highest tissue TAS levels were observed in the control group. The lowest tissue TAS levels were noted in the esophagitis group. The other groups had significantly lower mean tissue TOS and OSI levels than the esophagitis group (P<0.05). Conclusions: PRP and RSV have a healing effect on esophagitis. We are of the opinion that it may be included in clinical practice over time if the dose and duration of treatment can be adjusted better for RSV.