The aim of the present study was to evaluate the effect of different levels of calorie restriction (CR) on liver and muscle mitochondrial oxidant production and antioxidant enzymes activity in adult rats. Male Sprague Dawley rats (n=28) were subjected to 25-75% CR for 15 days. H2O2 production was decreased in muscle mitochondria of 25-50% CR group. H2O2 production decreased in liver mitochondri...

Previously, we demonstrated that the endogenous glutamate receptor antagonist kynurenic acid dose-dependently and significantly affected rat heart mitochondria. Now we have investigated the effects of L-tryptophan, L-kynurenine, 3-hydroxykynurenine and kynurenic, anthranilic, 3-hydroxyanthranilic, xanthurenic and quinolinic acids on respiratory parameters (ie, state 2, state 3), respiratory con...

Alcoholic liver disease claims two million lives per year. We previously reported that autophagy protected against alcohol-induced liver injury and steatosis by removing damaged mitochondria. However, the mechanisms for removal of these mitochondria are unknown. Parkin is an evolutionarily conserved E3 ligase that is recruited to damaged mitochondria to initiate ubiquitination of mitochondrial ...

The purpose of this work was to analyze the contribution of the mitochondria to the optical properties, i.e., light absorption and scattering, of the blood-free rat liver. Firstly, a theoretical model of the reduced scattering coefficient of the liver was performed by using the Mie theory, the Rayleigh-Debye-Gans approximation, and the electron microscopy descriptions of the liver ultrastructur...

Rat liver cytoplasm (postnuclear supernatant) has a low aerobic glycolytic rate in the presence of added glucose, ATP, ADP, Pi, and NAD+, whereas cytoplasm from Ehrlich ascites tumor cells exhibit a high aerobic glycolytic rate which is typical of rapidly proliferating tumor cells. Tumor mitochondria, unlike liver mitochondria, contain bound hexokinase which constitutes about 70% of the total c...

The state of lipid peroxidation (LPO), respiration and oxidative phosphorylation, mitochondrial permeability transition pore (mPTP) antiradical activity rat liver mitochondria in streptozotocin (STZ)-induced diabetes condition were studied, considered the ways correction detected membrane damages with use gossitan, isolated from cotton plant Gossypium hirsutum L. It was shown that rate states V...

Factors controlling the rate of oxidation of succinate were studied in mitochondria isolated from twenty-seven specimens of normal human liver obtained at operation. These were compared with mitochondria prepared from the livers of anesthetized and unanesthetized rats. Previously reported lower rates of succinate oxidation by human liver mitochondria were confirmed. This difference was no longe...