AIM: Cornus mas L is commonly used due to its anti-infl ammatory, anti-carcinogenic and anti-oxidant properties. In the study, the effects of C. mas L extract on a solid tumor were examined in the Ehrlich solid tumor model developed in Balb/C type mice. METHODS: Ehrlich acid tumor (EAT) cells (1x10 6 EAT cell) from the stock animal were injected subcutaneously (s.c.) through the nape of the mice. Treatment groups of solid tumor-induced animals received 100 mg/kg and 200 mg/kg of C. mas L extract intraperitoneally (i.p.) for 14 days. RESULTS: Tumor volumes and animal weights were found to be statistically signifi cant compared to the control group (p < 0.05). AgNOR staining was performed in tumor tissues. Statistically signifi cant differences were observed between the groups in terms of TAA/NA ratio (p < 0.05). Immunohistochemical and biochemical parameters were also evaluated. An estimation of tumor proliferation of the lung, liver, brain, kidney, testis and tumor antioxidant parameters viz. lipid peroxidation, reduced glutathione (GSH), glutathione S-transferase (GST), superoxide dismutase (SOD) and catalase (CAT) was made. CONCLUSIONS: Our study showed that the anti-tumor effect of C. mas L in assisted tumor development with EAT cells, was mediated by the enhancement of oxidative stress with multiple mechanisms (Tab. 6, Fig. 12, Ref. 38).
Background/aim To determine the effect of different doses of capsaicin on AgNOR protein synthesis in human colon adenocarcinoma derivate from colon cancer (Caco-2 cell). Materials and methods In this experimental study, after the cultured of Caco-2 cell line, the cells are divided into 4 groups as control and different capsaicin exposed doses (25uµ, 50uµ, and 75uµ). Mean AgNOR number and total AgNOR area/nuclear area (TAA/NA) were calculated. Results A significant differences were detected between control and capsaicin (50uµ) (P = 0.001), between control and capsaicin (75uµ) (P = 0.000), between capsaicin (25uµ) and capsaicin (50uµ) (P = 0.001) and between capsaicin (25uµ) and capsaicin (75uµ) (P = 0.000) for TAA/NA. Also, there were significant differences between control and capsaicin (50uµ) (P = 0.001), between control and capsaicin (75uµ) (P = 0.000), between capsaicin (25uµ) and capsaicin (50uµ) (P = 0.000) and between capsaicin (25uµ) and capsaicin (75uµ) (P = 0.000) for mean AgNOR number. Conclusion : A certain amount of capsaicin has a protective effect against colon adenocarcinoma and the dose concentrations are important for the most reliable treatment.
Abstract:Cancer is the second most common cause of death in the world. Several natural products have been studied for anticancer activity and for prevention or repair of oxidative injury. Curcumin is one of the natural products of high medicinal interest. This study was performed to investigate effects of curcumin on lipid peroxidation and antioxidant enzymes in tissues of mice bearing Ehrlich solid tumor. Forty mice were distributed to four groups as healthy control and treatments that received 1 × 10 6 Ehrlich ascites tumor (EAT) cells and EAT cells plus 25 mg/kg/day or 50 mg/kg/day curcumin subcutaneously. The liver, kidney, brain and testis tissues were collected for the malondialdehyde, superoxide dismutase and catalase analyses. Tumor development increased MDA levels in liver (p = 0.001), kidney (p < 0.001) and testis (p < 0.01) and curcumin reduced liver Mathew decreased liver and kidney SOD activities were increased by both levels of curcumin (p = 0.001) but 50 mg/kg/day curcumin increased brain SOD activity (p < 0.001). The kidney CAT activity was increased by 50 mg/kg/day curcumin (p < 0.001). This study showed that curcumin suppresses tumor progression, and alleviates the lipid peroxidation and improves antioxidant status in the tissues of solid tumor-bearing mice.
Introduction: Cancer is the second most common cause of death in the world. Several natural products have been studied for anticancer activity and for prevention or repair of oxidative injury. Curcumin is one of the natural products of high medicinal interest. This study was performed to investigate effects of curcumin on lipid peroxidation and antioxidant enzymes in tissues of mice bearing Ehrlich solid tumor. Materials and Methods: Forty mice were distributed to four groups as healthy control and treatments that received 1x106 Ehrlich ascites tumor (EAT) cells and EAT cells plus 25 mg/kg/day or 50 mg/kg/day curcumin with a single subcutaneous injection. The liver, kidney, brain and testis tissues were collected for the MDA, SOD and CAT analyses. Results: Tumor development increased MDA levels in liver (p=0.001), kidney (p<0.001) and testis (p<0.01) and curcumin reduced liver MDA. Liver and kidney SOD activities were increased by both levels of curcumin (p=0.001) but 50 mg/kg/day curcumin increased brain SOD activity (p<0.001). The kidney CAT activity was increased by 50 mg/kg/day curcumin (p<0.001). Discussion: This study showed that curcumin suppresses tumor progression, and alleviates the lipid peroxidation and improves antioxidant status in the tissues of solid tumor-bearing mice.
The purpose of this research was to investigate the possible protective effect of melatonin, as a potent antioxidant on I/R-induced renal injury in rats. Methods. We used 28 female Wistar albino rats weight 200-250g. The rats were randomly divided into 4 groups. Control Group (C): They were fed with only standard rat diet and tap water without drug injections or ischemia-reperfusion. Melatonin Group (M): 25 mg/kg melatonin was administered i.p 30 min. Ischemia/Reperfusion Group (I/R): Rats were subjected to 45 min of renal pedicle occlusion followed by 24 hours reperfusion. Melatonin+ischemia/reperfusion Group (M+I/R): Melatonin (25 mg/kg) was administered 30 min prior to ischemia and immediately before the reperfusion period. Rats were subjected to 45 min of renal pedicle occlusion followed by 24 hours reperfusion. Results. While MDA levels increased in the I/R group, SOD and GST activities were seen to be significantly increased. Although the increase of the SOD activity was observed in the M+I/R group, no meaningful difference was found. MDA levels were significantly decreased in M+I/R group compared to the control group, CAT and GST activities were significantly increased. Conclusions. Our results show that the treatment with M may prevent kidney damage due to ischemia result in increasing oxidant stress peroxidation damages further. Melatonin or its metabolites are capable of neutralizing free radicals and non-radical oxygen-based reactants. This study suggests that melatonin may be an effective antioxidant agent.
How to cite / Atıf için: Nisari M, Yılmaz S, Göçmen YA, Karataş E, Al Ö. The protective effect of caffeine and melatonin on antioxidant enzymes in rat fetal lung tissues. J Surg Med. 2019;3(11):805-808. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND 4.0) where it is permissible to download, share, remix, transform, and buildup the work provided it is properly cited. The work cannot be used commercially without permission from the journal. AbstractAim: Teratogenic substances such as nicotine, alcohol, caffeine, and derivatives, which pregnant women may get exposed to unconsciously or use consciously can harm the mother and directly or indirectly damage embryonal and fetal tissues. Melatonin has been shown to exert direct free radical trapping and indirect antioxidant effects in different organs and tissues. In this study, we aimed to biochemically evaluate the effects of melatonin, a powerful antioxidant battling the oxidative effects of high and low doses of caffeine administered to pregnant rats in fetal lung tissues. Methods: In our study, 35 pregnant adult female Sprague-Dawley rats were used. Pregnant rats were divided into 7 groups with 5 rats in each. Caffeine and melatonin were administered for 20 days during the pregnancy. The gestational period lasted 21 days in average. The offspring were sacrificed, and lung tissues were removed. Superoxide dismutase (SOD), glutathione (GSH), glutathione disulfide (GSSG), total oxidant status (TOS), total antioxidant status (TAS), calcium (Ca) and vitamin D (Vit D) were measured by spectrophotometric assay. The oxidative stress index (OSI) and total glutathione (GSH/GSSG) were determinants of oxidative stress and were calculated as TOS/TAS and GSH/GSSG ratios, respectively. Results: The highest TAS value was obtained in the Melatonin group (M) group. GSH and GSH/GSSG was highest in the control group, whereas GSSG was the highest in the high-dose caffeine group (HDC) group. HDC group had the highest SOD value compared to the other groups (P<0.05).Conclusions: According to these data, it was determined that caffeine used during pregnancy delayed the development of lung, and melatonin, which is a strong antioxidant, minimized the delay. Öz Amaç: Hamilelik sırasında bilinçli olarak kullanılan veya bilinçsizce maruz kalınan nikotin, alkol, kafein ve türevler gibi teratojenik maddelerin embriyonal ve fetal dokulara doğrudan veya dolaylı olarak zarar vermesinin yanı sıra anneye de zarar verebilir. Melatoninin farklı organ ve dokularda doğrudan serbest radikal toplayıcısı ve dolaylı antioksidan etkileri olduğu gösterilmiştir. Bu çalışmada, fetus akciğer dokularında gebe sıçanlara uygulanan yüksek ve düşük dozdaki kafeinin etkisine karşı güçlü bir antioksidan olan melatoninin değerlendirilmesi amaçlanmıştır. Yöntemler: Çalışmamızda 35 adet yetişkin dişi Sprague-Dawley sıçan kullanıldı. Gebe sıçanlar, her birinde 5 sıçan olacak şekilde 7 gruba ayrıldı. Gebelere 20 gün boyunca inv...
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