Home FOR AUTHORS General Physiology and Biophysics 2016 General Physiology and Biophysics Vol.35, No.2, p.175–183, 2016

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General Physiology and Biophysics Vol.35, No.2, p.175–183, 2016

Title: Duration of hexobarbital-induced sleep and monoamine oxidase activities in rat brain: Focus on the behavioral activity and on the free-radical oxidation
Author: Vadim E. Tseilikman Denis A. Kozochkin, Eugenia B. Manukhina, H. Fred Downey, Olga B. Tseilikman, Maria E. Misharina, Anna A. Nikitina, Maria V. Komelkova, Maxim S. Lapshin, Marina V. Kondashevskaya, Svetlana S. Lazuko, Oxana V. Kusina, Marat N. Sahabutdinov
Abstract: The present study is focused on the relationship between monoamine oxidase (MAO) activity and hepatic content of cytochrome P450 (CYP), which reflects the status of microsomal oxidation. For vital integrative evaluation of hepatic microsomal oxidation in rats, the hexobarbital sleep test was used, and content of CYP was measured in hepatic microsomes. Rats with short hexobarbital sleep time (SHST) had higher content of microsomal CYP than rats with long hexobarbital sleep time (LHST). Whole brain MAO-A and MAO-B activities, serotonin and carbonylated protein levels were higher in SHST than in LHST rats. MAO-A and MAO-B activities were higher in brain cortex of SHST rats; MAO-A activity was higher only in hypothalamus and medulla of LHST. The same brain regions of LHST rats had higher concentrations of carbonylated proteins and lipid peroxidation products than in SHST rats. MAO activity was correlated with microsomal oxidation phenotype. Rats with higher hepatic content of CYP had higher activities of MAO-A and MAO-B in the brain and higher plasma serotonin levels than rats with lower microsomal oxidation. In conclusion, data obtained in this study showed a correlation between MAO activity and microsomal oxidation phenotype.
Keywords: Cytochrome P450 (CYP) — Hexobarbital-induced sleep — Open field locomotion — Oxidative stress — Serotonin
Published online: 10-Mar-2016
Year: 2016, Volume: 35, Issue: 2 Page From: 175, Page To: 183
doi:10.4149/gpb_2015039


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