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Text
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URL Address
<a href="http://doi.org/10.1093/carcin/bgr045" target="_blank" rel="noreferrer noopener">http://doi.org/10.1093/carcin/bgr045</a>
Pages
888–896
Issue
6
Volume
32
Dublin Core
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Title
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Pomegranate-mediated chemoprevention of experimental hepatocarcinogenesis involves Nrf2-regulated antioxidant mechanisms.
Publisher
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Carcinogenesis
Date
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2011
2011-06
Subject
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*Phytotherapy; Alkylating Agents/toxicity; Animals; Antioxidants/*therapeutic use; Blotting; Carcinoma; Diethylnitrosamine/toxicity; Experimental/chemically induced/*drug therapy/metabolism; GA-Binding Protein Transcription Factor/*metabolism; gamma-Glutamyltransferase/metabolism; Hepatocellular/chemically induced/*drug therapy/metabolism; Immunoenzyme Techniques; Lipid Peroxidation/drug effects; Liver Neoplasms; Male; Oxidative Stress; Plant Extracts/*therapeutic use; Punicaceae/*chemistry; Rats; Sprague-Dawley; Western
Creator
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Bishayee Anupam; Bhatia Deepak; Thoppil Roslin J; Darvesh Altaf S; Nevo Eviatar; Lansky Ephraim P
Description
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Hepatocellular carcinoma (HCC), one of the most prevalent and lethal cancers, has shown an alarming rise in the USA. Without effective therapy for HCC, novel chemopreventive strategies may effectively circumvent the current morbidity and mortality. Oxidative stress predisposes to hepatocarcinogenesis and is the major driving force of HCC. Pomegranate, an ancient fruit, is gaining tremendous attention due to its powerful antioxidant properties. Here, we examined mechanism-based chemopreventive potential of a pomegranate emulsion (PE) against dietary carcinogen diethylnitrosamine (DENA)-induced rat hepatocarcinogenesis that mimics human HCC. PE treatment (1 or 10 g/kg), started 4 weeks prior to the DENA challenge and continued for 18 weeks thereafter, showed striking chemopreventive activity demonstrated by reduced incidence, number, multiplicity, size and volume of hepatic nodules, precursors of HCC. Both doses of PE significantly attenuated the number and area of gamma-glutamyl transpeptidase-positive hepatic foci compared with the DENA control. PE also attenuated DENA-induced hepatic lipid peroxidation and protein oxidation. Mechanistic studies revealed that PE elevated gene expression of an array of hepatic antioxidant and carcinogen detoxifying enzymes in DENA-exposed animals. PE elevated protein and messenger RNA expression of the hepatic nuclear factor
Identifier
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<a href="http://doi.org/10.1093/carcin/bgr045" target="_blank" rel="noreferrer noopener">10.1093/carcin/bgr045</a>
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
*Phytotherapy
2011
Alkylating Agents/toxicity
Animals
Antioxidants/*therapeutic use
Bhatia Deepak
Bishayee Anupam
Blotting
Carcinogenesis
Carcinoma
Darvesh Altaf S
Department of Pharmaceutical Sciences
Diethylnitrosamine/toxicity
Experimental/chemically induced/*drug therapy/metabolism
GA-Binding Protein Transcription Factor/*metabolism
gamma-Glutamyltransferase/metabolism
Hepatocellular/chemically induced/*drug therapy/metabolism
Immunoenzyme Techniques
Lansky Ephraim P
Lipid Peroxidation/drug effects
Liver Neoplasms
Male
NEOMED College of Pharmacy
Nevo Eviatar
Oxidative Stress
Plant Extracts/*therapeutic use
Punicaceae/*chemistry
Rats
Sprague-Dawley
Thoppil Roslin J
Western