Substrate-dependence of mitochondrial reactive oxygen species generation
نویسندگان
چکیده
منابع مشابه
Mitochondrial handling of excess Ca2+ is substrate-dependent with implications for reactive oxygen species generation.
The mitochondrial electron transport chain is the major source of reactive oxygen species (ROS) during cardiac ischemia. Several mechanisms modulate ROS production; one is mitochondrial Ca(2+) uptake. Here we sought to elucidate the effects of extramitochondrial Ca(2+) (e[Ca(2+)]) on ROS production (measured as H(2)O(2) release) from complexes I and III. Mitochondria isolated from guinea pig he...
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For a long time mitochondria have mainly been considered for their role in the aerobic energy production in eukaryotic cells, being the sites of the oxidative phosphorylation, which couples the electron transfer from respiratory substrates to oxygen with the ATP synthesis. Subsequently, it was showed that electron transfer along mitochondrial respiratory chain also leads to the formation of rad...
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In vitro maturation (IVM) is emerging as a popular technology at the forefront of fertility treatment and preservation. However, standard in vitro culture conditions usually increase reactive oxygen species (ROS), which have been implicated as one of the major causes for reduced embryonic developmental competence. It is well-known that higher than physiological levels of ROS triggers granulosa ...
متن کاملOxygen sensitivity of mitochondrial reactive oxygen species generation depends on metabolic conditions.
The mitochondrial generation of reactive oxygen species (ROS) plays a central role in many cell signaling pathways, but debate still surrounds its regulation by factors, such as substrate availability, [O2] and metabolic state. Previously, we showed that in isolated mitochondria respiring on succinate, ROS generation was a hyperbolic function of [O2]. In the current study, we used a wide variet...
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Camello-Almaraz, Cristina, Pedro J. Gomez-Pinilla, Maria J. Pozo, and Pedro J. Camello. Mitochondrial reactive oxygen species and Ca signaling. Am J Physiol Cell Physiol 291: C1082–C1088, 2006; doi:10.1152/ajpcell.00217.2006.—Mitochondria are an important source of reactive oxygen species (ROS) formed as a side product of oxidative phosphorylation. The main sites of oxidant production are compl...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Bioenergetics
سال: 2010
ISSN: 0005-2728
DOI: 10.1016/j.bbabio.2010.04.179