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Polymer fraction of Aloe vera exhibits a protective activity on ethanol-induced gastric lesions

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For centuries, Aloe has been used as a herbal plant remedy against skin disorders, diabetes, and for its cardiac stimulatory activity. Here, we examined the gastroprotective effects of an Aloe vera polymer fraction (Avpf; molecular weight cut-off ≥50 kDa; 150 mg/kg body weight, p.o.) on an ethanol-induced gastric lesion mouse model. Mice pre-treated with Avpf had significantly fewer gastric lesions than their respective controls. To further examine the potential mechanism underlying this effect, we used reverse transcription-polymerase chain reaction to examine nitric oxide synthase and matrix metalloproteinase (MMP)mRNA expression on tissues from gastric lesions. Our results revealed that the mRNA expressions of inducible nitric oxide synthase (iNOS) and neuronal nitric oxide synthase (nNOS) were each reduced by ~50% in Avpf-treated mice vs. the controls, whereas, the mRNA expression levels of endothelial nitric oxide synthase remained unchanged. MMP-9, an index for gastric lesions, also alleviated the ethanol-treated gastric ulceration during Avpf treatment. These findings collectively suggest that Avpf significantly protects the gastric mucosa against ethanol-induced gastric damage, at least in part, by decreasing mRNA expression levels of not only iNOS and nNOS, but also MMP-9.
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Document Type: Research Article

Affiliations: 1: Department of Food Science and Biotechnology, Graduate School, Kyungpook National University, Daegu 702-701, Republic of Korea 2: Department of Food Science and Biotechnology, Kyungpook National University, 1370 SanGyukDong, BukGu, Daegu 702-701, Republic of Korea

Publication date: January 1, 2011

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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