Document Detail


Chemopreventive effects of in vitro digested and fermented bread in human colon cells.
MedLine Citation:
PMID:  22033853     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PURPOSE: Bread as a staple food product represents an important source for dietary fibre consumption. Effects of wheat bread, wholemeal wheat bread and wholemeal rye bread on mechanisms which could have impact on chemoprevention were analysed in colon cells after in vitro fermentation. METHODS: Effects of fermented bread samples on gene expression, glutathione S-transferase activity and glutathione content, differentiation, growth and apoptosis were investigated using the human colon adenoma cell line LT97. Additionally, apoptosis was studied in normal and tumour colon tissue by determination of caspase activities. RESULTS: The expression of 76 genes (biotransformation, differentiation, apoptosis) was significantly upregulated (1.5-fold) in LT97 cells. The fermented bread samples were able to significantly increase glutathione S-transferase activity (1.8-fold) and glutathione content (1.4-fold) of the cells. Alkaline phosphatase activity as a marker of differentiation was also significantly enhanced (1.7-fold). The fermented bread samples significantly inhibited LT97 cell growth and increased the level of apoptotic cells (1.8-fold). Only marginal effects on apoptosis in tumour compared to normal tissue were observed. CONCLUSIONS: This is the first study which presents chemopreventive effects of different breads after in vitro fermentation. In spite of differences in composition, the results were comparable between the bread types. Nevertheless, they indicate a potential involvement of this staple food product regarding the prevention of colon cancer.
Authors:
Wiebke Schlörmann; Beate Hiller; Franziska Jahns; Romy Zöger; Isabell Hennemeier; Anne Wilhelm; Meinolf G Lindhauer; Michael Glei
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-28
Journal Detail:
Title:  European journal of nutrition     Volume:  -     ISSN:  1436-6215     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888704     Medline TA:  Eur J Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Nutritional Toxicology, Institute of Nutrition, Friedrich-Schiller-University Jena, Dornburger Strasse 24, 07743, Jena, Germany, wiebke.schloermann@uni-jena.de.
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