Changes in enzyme levels in the testis and liver of the 13-lined ground squirrel (spermophilus tridecemlineatus) at the time of arousal from hibernation.

Abstract

Male 13-lined ground squirrels induced to emerge from hibernation resumed feeding and gained weight. The weight gain was supported by increases in the levels of glucose 6-phosphate dehydrogenase, L-alanine aminotransferase and carnitine acetyltransferase in the liver. Maturation of the testis occurred in a period of about 16 days spanning the time of induced arousal. The testes of hibernating males were characterized by higher levels of L-alanine aminotransferase, glucose 6-phosphate dehydrogenase and 3-hydroxyacyl-CoA dehydrogenase than the testes of aroused males. Hexokinase, carnitine acetyltransferase and citrate synthase levels were similar in the testes of hibernating and aroused males. 3-Hydroxyacyl-CoA dehydrogenase was more active and L-alanine aminotransferase less active in ground squirrel sperm than in rat sperm.

• Authors: B W Geer, G I Gabliani, P Schramm
• Journal: Archives internationales de physiologie et de biochimie (Arch Int Physiol Biochim) Vol. 85 Issue 2 Pg. 221-32 (Apr 1977) ISSN: 0003-9799 [Print] Belgium
• PMID: 71081 (Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S.)

Chemical References

• Hydroxy Acids
• Alcohol Oxidoreductases
• Glucosephosphate Dehydrogenase
• Carnitine O-Acetyltransferase
• Citrate (si)-Synthase
• Alanine Transaminase
• Hexokinase

Topics

• Adaptation, Physiological
• Alanine Transaminase (metabolism)
• Alcohol Oxidoreductases (metabolism)
• Animals
• Arousal
• Body Weight
• Carnitine O-Acetyltransferase (metabolism)
• Citrate (si)-Synthase (metabolism)
• Glucosephosphate Dehydrogenase (metabolism)
• Hexokinase (metabolism)
• Hibernation
• Hydroxy Acids
• Liver (enzymology)
• Male
• Organ Size
• Rodentia (physiology)
• Sciuridae (physiology)
• Testis (anatomy & histology, enzymology)
• Time Factors