As previously shown, analyses of enrichment of functional annotation groups as defined in the Gene Ontology (GO), the Kyoto Encyclopedia of Genes and Genomes (KEGG) databases, or in the Ingenuity Pathways Analysis library, highlight ubiquitination, phosphorylation, mitochondrion dysfunction, actin-, integrin-, PDGF-, EGF-, VEGF-, and Ca-signalling pathways [ 13].
Thus, our yeast model corroborates features of cell-death-relevant mitochondrion dysfunctions found in AD neurons.
37 Then abnormal mtDNA content in breast tissues may induce dysfunction of mitochondrion, which plays an important role in tumorigenesis.
To further confirm the hyperammonia affecting the dysfunction of mitochondrion in hepatocytes, we found that the cytotoxicity of NH4Cl toward hepatocytes was significantly reduced when adding BAPTA/AM, which is an effective intracellular Ca2+ chelator [ 36].
This could provide a link between dysfunction in an organelle, the mitochondrion, and its consequences in another compartment, the nucleus, via an ISC-dependent pathway (Veatch et al. 2009).
Conversely new evidence points to other facets of mitochondrial dysfunction which may nevertheless suggest the mitochondrion retains a critical role at the center of a complex web of processes leading to cellular and organismal aging.
A third specific mutation is present in the Aifm3 gene, encoding the apoptosis-inducing factor mitochondrion-associated protein 3, which may contribute to mitochondrial dysfunction in SAMP8 mice as it induces apoptosis in vitro and has an oxidoreductase domain that might play a role in the respiratory chain (Xie et al., 2005).
To elucidate the mechanism of cell death induced by quercetin, we chose to measure the mitochondrial membrane potential because previous studies have shown that the single mitochondrion of the kinetoplastid parasite is a good indicator of cellular dysfunction [16], [19], [33].
Given the mitochondrion's important role in cell growth and survival, patients with mitochondrial dysfunction appear to have a highly diverse multi-organ symptom.
Though there is evidence to implicate that the mitochondrion may play an important role in the development of postresuscitation myocardial dysfunction, limited data are available regarding the ultrastructural alterations of the mitochondria, mitochondrial energy-producing ability, and their relationship to postresuscitation myocardial dysfunction.
Under high [Ca2+]i the mitochondrion will increase Ca2+ uptake, leading to elevated [Ca2+]m eventually resulting in organelle dysfunction.
