Molecular aspects of intestinal calcium absorption
نویسندگان
چکیده
منابع مشابه
Cell and molecular aspects of human intestinal biotin absorption.
Humans cannot synthesize biotin and thus must obtain this vitamin from exogenous sources. The intestine is exposed to 2 sources of biotin: a dietary source and a bacterial source, which is normal microflora of the large intestine. Dietary protein-bound biotin is converted to free biotin prior to absorption. Absorption of free biotin in the small and large intestine involves a saturable and Na(+...
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An overview of current information on the mechanisms by which intestinal calcium absorption occurs is described in this article. Both paracellular and transcellular pathways are analyzed. Special emphasis focuses on molecules participating in the latter pathway, such as TRPV5 and TRPV6 channels, located in the apical region of the enterocytes, CB 9k and CB 28k , presumably involved in the catio...
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The disequilibrium between the production of reactive oxygen (ROS) and nitrogen (RNS) species and their elimination by protective mechanisms leads to oxidative stress. Mitochondria are the main source of ROS as by-products of electron transport chain. Most of the time the intestine responds adequately against the oxidative stress, but with aging or under conditions that exacerbate the ROS and/o...
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ژورنال
عنوان ژورنال: World Journal of Gastroenterology
سال: 2015
ISSN: 1007-9327
DOI: 10.3748/wjg.v21.i23.7142