[Effect of variations of temperature on intestinal respiration and absorption of glycine in Discoglossus (Discoglossus pictus (Ott, 1837)].
The study of intestinal respiration in vitro showed that thermal rise up to 30 degrees C increases oxygen consumption and decreases it at the beginning of 35 degrees C. The Q10, equal to 1,80 and 1,51 between 15-25 degrees C and 20-30 degrees C, suggests a stimulation, by the temperature, of enzymatic reactions rate in the respiratory chain. The measures of oxygen consumption have been conducted every 10 minutes during 120 minutes. The study of glycine absorption at the concentration 0,5 mM have been effected with in vitro technic in presence of 14C glycine. The absorption time have been fixed at 30 minutes. The glycine absorption studied at 15-20 and 25 degrees C increase with the rise of temperature. The Q10, equal to 1,76 between 15 and 25 degrees C, suggests the mechanisms existence of metabolic complexions. The water movements, at different temperatures, are always directed from physiologic liquid to intestinal tissue.
D000663:Amphibians / Q000378:metabolism*; D000818:Animals; D002250:Carbon Radioisotopes; D005998:Glycine / Q000378:metabolism*; D007408:Intestinal Absorption; D007700:Kinetics; D010101:Oxygen Consumption
D002250:Carbon Radioisotopes; D005998:Glycine
Effets des variations de la température sur la respiration intestinale et l'absorption du glycocolle chez le Discoglosse, Discoglossus pictus (Ott, 1837).