Glucose and free amino acids in the blood of lampreys (Lampetra fluviatilis L.) and frogs (Rana temporaria L.) under prolonged starvation

Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
Larisa V EmelyanovaMargarita V Savina

Abstract

The content variation dynamics of glucose and free amino acids in blood plasma was followed for lampreys and frogs from autumn till spring, when the exogenous feeding is switched off. In October, the glucose level is rather high (8-10 mM) in blood plasma of both lampreys and frogs. It falls by 50% during winter and falls to a critically low level (1-2 mM) during spring. The lamprey plasma amino acid levels increase by 74% from November to April and thus reach the lower limit known for mammals. The amount of free amino acids in frog plasma decreases by 40% by spring in comparison with the values in autumn. More intensive proteolysis in lamprey tissues compared with that in frog tissues has been confirmed by quantitatively determining leucine, isoleucine, and valine in the blood of these animals. Besides these three amino acids, alanine, glycine, lysine, threonine and, in certain periods, tyrosine have been found to be quantitatively significant in the plasma of both animals.

References

Apr 1, 1975·Comparative Biochemistry and Physiology. A, Comparative Physiology·P Koskela, S Pasanen
Jan 1, 1977·Comparative Biochemistry and Physiology. B, Comparative Biochemistry·M V Savina, A B Wojtczak
Feb 15, 1976·The Biochemical Journal·L Goldstein, E A Newsholme
Jan 1, 1975·Annual Review of Biochemistry·P Felig
Dec 1, 1991·Biulleten' eksperimental'noĭ biologii i meditsiny·N O BykovaM P Prozorovskaia
Sep 1, 1985·Archives of Dermatology·W L Morison
Jan 1, 1983·Comparative Biochemistry and Physiology. B, Comparative Biochemistry·M V Savina, E F Derkachev
Jan 1, 1995·Annual Review of Pharmacology and Toxicology·L J Marton, A E Pegg
Jun 12, 2001·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·J H Youson, S A Sower
Nov 24, 2001·Respiration Physiology·R G Boutilier
Dec 17, 2002·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·H TapieroK D Tew

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Citations

Mar 29, 2011·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·K R PatonI C Potter
Jul 26, 2012·Zhurnal evoliutsionnoĭ biokhimii i fiziologii·E V Seliverstova, N P Prutskova
Jan 10, 2012·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Jason R TrebergWilliam R Driedzic
Mar 13, 2016·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·James S Ballantyne
Jul 18, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Peidong ZhangGuoqiang Huang
Jul 12, 2016·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Natalia I AgalakovaAnatolii A Nikiforov
Feb 20, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Kaworu NakamuraShoji Yamada
Dec 21, 2019·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Karen R PatonIan C Potter
Sep 12, 2020·Animals : an Open Access Journal From MDPI·Jia ZhouBai Xue

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