introduction: in the present study, the effect of an inducible no synthase (inos) inhibitor, aminoguanidine (ag) on lipopolysaccharide (lps)-induced memory impairment and oxidative stress and inflammation parameters was evaluated. materials and methods: the rats were divided into 5 groups and treated: 1) control (saline), 2) lps (1 mg/kg), 3-5) ag 50, 100 and 150mg/kg 30 min before lps injectio...

We have been studying the membranes of cisplatin (DDP)-resistant 2008 human ovarian carcinoma cells (C13* cells) for alterations that may account for their decreased DDP accumulation. We now report that C13* cells have significant changes in their mitochondrial and plasma membrane potentials and in their mitochondrial morphology. C13* cells accumulated 2.0 +/- 0.1-fold more of the membrane pote...

Proapoptotic BCL-2 proteins converge upon the outer mitochondrial membrane (OMM) to promote mitochondrial outer membrane permeabilization (MOMP) and apoptosis. Here we investigated the mechanistic relationship between mitochondrial shape and MOMP and provide evidence that BAX requires a distinct mitochondrial size to induce MOMP. We utilized the terminal unfolded protein response pathway to sys...

Aminoguanidine derivatives are the focus of research because their various biological activities, such as antiviral, antibacterial, analgesic, antioxidant, and anticancer. Their complexes with different metals also examined many them show significant activity, too. Besides, some good photoluminescent properties used for preparation photoelectronic devices. In accordance, synthesis, physicochemi...

Mitochondrial membrane potential varies, depending on energy demand, subcellular location, and morphology and is commonly used as an indicator of mitochondrial functional status. Electrophoretic mobility is a heterogeneous surface property reflective of mitochondrial surface composition and morphology, which could be used as a basis for separation of mitochondrial subpopulations. Since these pr...

Modest depolarization of the mitochondrial inner membrane potential is known to attenuate mitochondrial reactive oxygen species generation. Transient pharmacologic uncoupling of mitochondrial oxidative phosphorylation results in modest depolarization of the mitochondrial membrane potential and confers protection against subsequent cardiac ischemia-reperfusion injury. Whether cardiac mitochondri...

A recent study revealed a mechanism of delaying aging in yeast by a natural compound which specifically impacts mitochondrial redox processes. In this mechanism, exogenously added lithocholic bile acid enters yeast cells, accumulates mainly in the inner mitochondrial membrane, and elicits an age-related remodeling of phospholipid synthesis and movement within both mitochondrial membranes. Such ...

Discovered in the cardiac sarcolemma, ATP-sensitive K+(KATP) channels have more recently also been identified within the inner mitochondrial membrane. Yet the consequences of mitochondrial KATP channel activation on mitochondrial function remain partially documented. Therefore, we isolated mitochondria from rat hearts and used K+ channel openers to examine the effect of mitochondrial KATPchanne...

A method is described, based on the differential accumulation of Rb+ and methyltriphenylphosphonium, for the simultaneous estimation of the membrane potentials across the plasma membrane of isolated nerve endings (synaptosomes), and across the inner membrane of mitochondria within the synaptosomal cytoplasm. These determinations, together with measurements of respiratory rates, and ATP and phos...