Details

Autor(en) / Beteiligte

• Mazzon, Emanuela
• Muià, Carmelo
• Paola, Rosanna Di
• Genovese, Tiziana
• Menegazzi, Marta
• De Sarro, Angelina
• Suzuki, Hisanori
• Cuzzocrea, Salvatore

Titel

Green tea polyphenol extract attenuates colon injury induced by experimental colitis

Ist Teil von

• Free radical research, 2005-09, Vol.39 (9), p.1017-1025

Ort / Verlag

England: Informa UK Ltd

Erscheinungsjahr

2005

Quelle

Taylor & Francis

Beschreibungen/Notizen

• Inflammatory bowel disease (IBD) is characterised by oxidative and nitrosative stress, leukocyte infiltration, and up-regulation of intercellular adhesion molecule 1 (ICAM-1) expression in the colon. The aim of the present study was to examine the effects of green tea extract in rats subjected to experimental colitis induced by intracolonic instillation of dinitrobenzene sulphonic acid (DNBS). At 4 days after DNBS administration the rats were sacrificed. Treatment with green tea extract significantly attenuated diarrhoea and loss of body weight. This was associated with a remarkable amelioration of the disruption of the colonic architecture, significant reduction of colonic myeloperoxidase (MPO) and tumor necrosis factor-α (TNF-α) production. Green tea extract also reduced the appearance of nitrotyrosine immunoreactivity in the colon and reduced the up-regulation of ICAM-1.