Differential distribution of glutathione and glutathione-related enzymes in rabbit kidney

Mohandas, Janardanan; Marshall, J.J.; Duggin, Geoffrey G.; Horvath, John S.; Tiller, David J.

doi:10.1016/0006-2952(84)90353-8

Cited by 557 publications

(362 citation statements)

References 38 publications

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“…Glutathione peroxidase activity was measured according to the procedure of Mohandas et al (1984), as described by Athar & Iqbal (1998). The reaction mixture consisted of 1.44 ml phosphate buffer (0.1 M, pH 7.4), 0.1 ml EDTA (0.5 mM) , 0.1ml sodium azide (1.0 mM), 0.05 ml glutathione reductase (1.0 EU/ml), 0.1 ml GSH (1.0 mM), 0.1 ml NADPH (0.1 mM), 0.1 ml hydrogen peroxide (0.019 M), 0.025 ml and 0.05 ml of renal and hepatic PMS (10% w/v) in a total volume of 2.0 ml.…”

Section: Methodsmentioning

confidence: 99%

Dietary Supplementation of Curcumin Enhances Antioxidant and Phase II Metabolizing Enzymes in ddY Male Mice: Possible Role in Protection against Chemical Carcinogenesis and Toxicity

Iqbal

Sharma

Okazaki

et al. 2003

Pharmacology & Toxicology

272

147

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Dietary antioxidants protect laboratory animals against the induction of tumours by a variety of chemical carcinogens. Among possible mechanism of protection against chemical carcinogenesis could be mediated via-antioxidantdependent induction of detoxifying enzymes. Curcumin, a yellow pigment from Curcuma longa, is a major component of turmeric and is commonly used as a spice and food colouring material and exhibits antiinflammatory, antitumour, and antioxidant properties. In this study we therefore investigated the effect of dietary supplementation of curcumin on the activities of antioxidant and phase II-metabolizing enzymes involved in detoxification, and production of reactive oxygen species were quantified in ddY male mice. Dietary supplementation of curcumin (2%, w/v) to male ddY mice for 30 days significantly increased the activities of glutathione peroxidase, glutathione reductase, glucose-6-phosphate dehydrogenase and catalase to 189%, 179%, 189%, and 181% in liver and 143%, 134%, 167% and 115% in kidney respectively as compared with corresponding normal diet fed control (PϽ0.05-0.001). Parallel to these changes, curcumin feeding to mice also resulted in a considerable enhancement in the activity of phase II-metabolizing enzymes viz. glutathione S-transferase and quinone reductase to 1.7 and 1.8 times in liver and 1.1 and 1.3 times in kidney respectively as compared with corresponding normal diet fed control (PϽ0.05-0.01). In general, the increase in activities of antioxidant and phase II-metabolizing enzymes was more pronounced in liver as compared to kidney. The induction of such detoxifying enzymes by curcumin suggest the potential value of this compound as protective agent against chemical carcinogenesis and other forms of electrophilic toxicity. The significance of these results can be implicated in relation to cancer chemopreventive effects of curcumin against the induction of tumours in various target organs.

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Section: Methodsmentioning

confidence: 99%

Dietary Supplementation of Curcumin Enhances Antioxidant and Phase II Metabolizing Enzymes in ddY Male Mice: Possible Role in Protection against Chemical Carcinogenesis and Toxicity

Iqbal

Sharma

Okazaki

et al. 2003

Pharmacology & Toxicology

272

147

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show abstract

“…The GPx activity was calculated by the method of Mohandas et al (1984). A total of 2 ml volume consisted of 0.1 ml EDTA (1 mM), 0.1 ml sodium azide (1 mM), 1.44 ml phosphate buffer (0.1M, pH 7.4), 0.05 ml glutathione reductase (1 IU/ml), 0.05 ml reduced glutathione (1 mM), 0.1 ml NADPH (0.2 mM) and 0.01 ml H 2 O 2 (0.25 mM) and 0.1ml 10% PMS.…”

Section: Measurement Of Glutathione Peroxidase (Gpx) Activitymentioning

confidence: 99%

Amelioration of 1,2 Dimethylhydrazine (DMH) Induced Colon Oxidative Stress, Inflammation and Tumor Promotion Response by Tannic Acid in Wistar Rats

Hamiza¹,

Rehman²,

Tahir³

et al. 2012

Asian Pacific Journal of Cancer Prevention

100

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Colon cancer is the third most common malignant neoplasm in the world and it remains an important cause of death, especially in western countries. The toxic environmental pollutant, 1, 2-dimethylhydrazine (DMH), is also a colon-specific carcinogen. Tannic acid (TA) is reported to be effective against various types of chemically induced toxicity and also carcinogenesis. In the present study, we evaluated the chemopreventive efficacy of TA against DMH induced colon toxicity in a rat model. Efficacy of TA against the colon toxicity was evaluated in terms of biochemical estimation of antioxidant enzyme activities, lipid peroxidation, histopathological changes and expression of early molecular markers of inflammation and tumor promotion. DMH treatment induced oxidative stress enzymes (p<0.001) and an early inflammatory and tumor promotion response in the colons of Wistar rats. TA treatment prevented deteriorative effects induced by DMH through a protective mechanism that involved reduction of oxidative stress as well as COX-2, i-NOS, PCNA protein expression levels and TNF-α (p<0.001) release. It could be concluded from our results that TA markedly protects against chemically induced colon toxicity and acts plausibly by virtue of its antioxidant, anti-inflammatory and antiproliferative activities.

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“…Liver lobules were dissected out, washed immediately with ice-cold saline to remove blood, and the wet weight noted and then stored at -80 °C for various oxidative stress and biochemical assays. Post-mitochondrial supernatant (PMS) was prepared using method of Mohandas et al (1984) with some modifications.…”

Section: Hepatoprotective Activitymentioning

confidence: 99%

Chemopreventive Efficacy of Moringa oleifera Pods Against 7, 12-Dimethylbenz[a]anthracene Induced Hepatic Carcinogenesis in Mice

Sharma

Paliwal²,

Janmeda³

et al. 2012

Asian Pacific Journal of Cancer Prevention

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Differential distribution of glutathione and glutathione-related enzymes in rabbit kidney

Cited by 557 publications

References 38 publications

Dietary Supplementation of Curcumin Enhances Antioxidant and Phase II Metabolizing Enzymes in ddY Male Mice: Possible Role in Protection against Chemical Carcinogenesis and Toxicity

Dietary Supplementation of Curcumin Enhances Antioxidant and Phase II Metabolizing Enzymes in ddY Male Mice: Possible Role in Protection against Chemical Carcinogenesis and Toxicity

Amelioration of 1,2 Dimethylhydrazine (DMH) Induced Colon Oxidative Stress, Inflammation and Tumor Promotion Response by Tannic Acid in Wistar Rats

Chemopreventive Efficacy of Moringa oleifera Pods Against 7, 12-Dimethylbenz[a]anthracene Induced Hepatic Carcinogenesis in Mice

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