Dihydroartemisinin (DHA) has been shown to inhibit the viability of various cancer cells. Previous studies have revealed that the mechanisms involved in the inhibitory effects of DHA are based on theactivation of p53 and the mitochondrial-related cell death pathway. However, the exact association between upstream signaling and the activation of cell death pathway remains unclear. In this study,...

Renal Ischemia/reperfusion injury (IRI) is characterized by the restriction of blood supply, followed restoration flow and re-oxygenation. Reperfusion itself paradoxically exacerbates tissue injury, threatening function, viability organ. IRI usually associated with a variety homeostatic changes that involve reduced energetics, oxidative processes contribute to mitochondrial dysfunction. Dependi...

In this work, we measured the effects of pharmacological concentrations of cisplatin (cis-diaminedichloroplatinum II) on mitochondrial function, cell viability, and DNA fragmentation in Jurkat cells. The exposure of cells to 0-25 microM cisplatin for 3 h had no immediate effect on cellular mitochondrial oxygen consumption, measured using a palladium-porphyrin oxygen sensing phosphor. Similarly,...

Thioredoxin 2 (TXN2; also known as Trx2) is a small mitochondrial redox protein essential for the control of mitochondrial reactive oxygen species homeostasis, apoptosis regulation and cell viability. Exome sequencing in a 16-year-old adolescent suffering from an infantile-onset neurodegenerative disorder with severe cerebellar atrophy, epilepsy, dystonia, optic atrophy, and peripheral neuropat...

Studies of chemically induced cell injury and death, which have used as model systems freshly isolated rat hepatocytes and hepatocytes in culture, are discussed. An important model uses the omission of Ca2+ from the medium during rat hepatocyte incubations. Ca2+ omission induces an intense oxidative stress within hepatocytes incubated in a 95% O2 + 5% CO2 atmosphere. The relationship of calcium...

The type of free fatty acids (FFAs), saturated or unsaturated, is critical in the development of insulin resistance (IR), since the degree of saturation correlates with IR. We compared the effects of the saturated FFA palmitate, the unsaturated FFA oleate, and a mixture of each on the production of mitochondrial reactive oxygen species (mtROS), mitochondrial DNA (mtDNA) damage, mitochondrial fu...

Dichloroacetate (DCA) is beneficial in cancer therapy because it induces apoptosis and decreases cancer growth in vitro and in vivo without affecting non-cancer cells. DCA stimulates the activity of the enzyme pyruvate dehydrogenase by inhibiting pyruvate dehydrogenase kinase. Consequently, DCA promotes oxidative phosphorylation after glycolysis. Therefore, DCA produces changes in energy metabo...

The neuroprotective role of propofol in transient global and focal cerebral ischemia reperfusion (I/R) animal model has recently been highlighted. However, no studies have conducted to explore the relationship between mitochondrial fission/fusion and I/R injury under the intervention of propofol. Moreover, neuroprotective mechanism of propofol is yet unclear. Culturing primary hippocampal cells...

Hyperoside (HY) is a major pharmacologically active component from Prunella vulgaris L. and Hypericum perforatum. The present study aimed to determine the anticancer effect of HY and determine the underlying mechanisms involved. Human A549 cells were treated with HY (10, 50 and 100 µM), and cell viability was detected by an MTT assay. Cell apoptosis and mitochondrial membrane potential were det...

Mitochondrial protein tyrosine phosphorylation is an important mechanism for the modulation of mitochondrial functions. In the present study, we have identified novel substrates of c-Src in mitochondria and investigated their function in the regulation of oxidative phosphorylation. The Src family kinase inhibitor PP2 {amino-5-(4-chlorophenyl)-7-(t-butyl) pyrazolo [3,4d] pyrimidine} exhibits sig...