The spatial distribution of mitochondrial respiration and oxidative phosphorylation along the small intestine in rats of different ages

Growing rats were shown to have the maximum of respiratory and ATP-synthetase activities in the duodenum and proximal part of the small intestine, the minimum--in its distal part, whereas the medial part of the intestinal tube was in intermediate position. These parameters were equally distributed a...

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Published inFiziologicheskii zhurnal SSSR imeni I. M. Sechenova Vol. 78; no. 9; p. 98
Main Authors Zaripov, B Z, Almatov, K T, Kubaev, O, Irgashev, M S
Format Journal Article
LanguageRussian
Published Russia (Federation) 01.09.1992
Subjects
2,4-Dinitrophenol
Adenosine Triphosphate - biosynthesis
Adenosine Triphosphate - pharmacology
Aging - drug effects
Aging - metabolism
Animals
ATP Synthetase Complexes
Dinitrophenols - pharmacology
Intestinal Mucosa - drug effects
Intestinal Mucosa - metabolism
Intestine, Small - drug effects
Intestine, Small - metabolism
Male
Multienzyme Complexes - drug effects
Multienzyme Complexes - metabolism
Oxidative Phosphorylation - drug effects
Oxygen Consumption - drug effects
Phosphotransferases - drug effects
Phosphotransferases - metabolism
Rats
Uncoupling Agents - pharmacology
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Summary:Growing rats were shown to have the maximum of respiratory and ATP-synthetase activities in the duodenum and proximal part of the small intestine, the minimum--in its distal part, whereas the medial part of the intestinal tube was in intermediate position. These parameters were equally distributed along the small intestine in adult rats. In old rats, the highest rate of oxygen consumption was revealed in the mitochondria of the medial part, the lower one--in the proximal part, and the lowest level was found in the duodenum and in distal part of the small intestine.
ISSN:0015-329X