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- 2Electron paramagnetic resonance
- 1Artificial respiration
- 1Bacterial respiratory diversity
- 1Chronic Disease
- 5Chan, Catherine B.
- 5Wheeler, Michael B.
- 4Koshkin, Vasilij
- 1Arumugam, Yoga
- 1Asghar, Zeenat
- 1Bell, Rhonda C.
Chronic exposure to elevated free fatty acids (lipotoxicity) induces uncoupling protein (UCP2) in the pancreatic β-cell, and therefore a causal link between UCP2 and β-cell defects associated with obesity may exist. Recently, we showed that lipid treatment in vivo and in vitro in UCP2(–/–)...
The insulin receptor (IR) and its signaling appear to be essential for insulin secretion from pancreatic β-cells. However, much less is known about the role of the IR in α-cells. To assess the role of the IR in glucagon and insulin secretion, we engineered adeno-viruses for high efficiency small...
Giant vesicles were used to study the rates of uptake of long-chain fatty acids by heart, skeletal muscle, and adipose tissue of obese and lean Zucker rats. With obesity there was an increase in vesicular fatty acid uptake of 1.8-fold in heart, muscle and adipose tissue. In some tissues only...
Limited mitochondrial permeabilization is an early manifestation of palmitate-induced lipotoxicity in pancreatic ß-cellsDownload
Involvement of the mitochondrial permeability transition (MPT) pore in early stages of lipotoxic stress in the pancreatic β-cell lines MIN6 and INS-1 was the focus of this study. Both long term (indirect) and acute (direct) effects of fatty acid (FA) application on β-cell susceptibility to...
Excessive free fatty acid (FFA) exposure represents a potentially important diabetogenic condition that can impair insulin secretion from pancreatic β-cells. Because mitochondrial oxidative phosphorylation is a main link between glucose metabolism and insulin secretion, in the present work we...
Approximately one third of the E. coli and human proteomes consist of membrane proteins. Among these proteins are oxidoreductases, which fulfil central roles in the bioenergetic processes of cells, function as pathogenicity factors in microorganisms and their dysfunction is responsible for many...
The characterization of mitochondrial permeability transition (MPT) in clonal pancreatic beta cells: Multiple modes and regulationDownload
Mitochondrial permeability transition (MPT), which contributes substantially to the regulation of normal mitochondrial metabolism, also plays a crucial role in the initiation of cell death. It is known that MPT is regulated in a tissue-specific manner. The importance of MPT in the pancreatic...
Complex II, or succinate dehydrogenase, is a vital component of aerobic life. Its function is critical for both the tricarboxylic acid cycle and the mitochondrial respiratory chain since it catalyzes the oxidation of succinate to fumarate, liberating two electrons that feed into the lipid-soluble...