Effect of fasting on some enzymatic activities in the muscle layer of intestine in the rat.
Alanine aminotransferase (AlAT), aspartate aminotransferase (AspAT), adenosine deaminase (ADA) and 5'-nucleotidase (5'-NT) activities were studied in the rat intestine smooth muscles after 24 and 48 hours of fasting. It was found that fasting evoked a significant decrease in ADA and increase in 5'-NT activities in all intestinal segments analysed. A dual effect of fasting was noted for AspAT and AlAT; after first 24h of fasting the activities of both enzymes decreased and increased again when fasting was continued to 48h. We conclude that during fasting an adaptive response occurs in the smooth muscles of intestine and this may be a part of systemic adaptation to fasting.
Barańczuk
E
E
Department of Physiology, Medical Academy of Białystok.
Czarnowski
D
D
Namiot
Z
Z
D015720:5'-Nucleotidase / Q000378:metabolism; D000222:Adaptation, Physiological; D000243:Adenosine Deaminase / Q000378:metabolism; D000410:Alanine Transaminase / Q000378:metabolism; D000818:Animals; D001219:Aspartate Aminotransferases / Q000378:metabolism; D005215:Fasting / Q000502:physiology*; D007422:Intestines / Q000201:enzymology*; D008297:Male; D009130:Muscle, Smooth / Q000201:enzymology*; D051381:Rats; D017208:Rats, Wistar
D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D015720:5'-Nucleotidase; D000243:Adenosine Deaminase