Accumulating evidence suggests that mitochondrial dysfunction underlies the pathophysiology of bipolar disorder (BD) and schizophrenia (SZ). We performed large-scale DNA microarray analysis of postmortem brains of patients with BD or SZ, and examined expression patterns of mitochondria-related genes. We found a global down-regulation of mitochondrial genes, such as those encoding respiratory ch...

Mitochondria play a fundamental role in regulating a variety of complex metabolic processes to maintain adequate energy balance for cellular existence. To orchestrate these functions, an undisturbed mitochondrial dynamics is imperative through a set of tightly guided mechanisms. Interference in key signature processes by several genetic, epigenetic and age-linked factors triggers mitochondrial ...

Mitochondrial dysfunction is one of the major pathological changes seen in Alzheimer's disease (AD). Amyloid beta-peptide (Aβ), a neurotoxic peptide, accumulates in the brain of AD subjects and mediates mitochondrial and neuronal stress. Therefore, protecting mitochondrion from Aβ-induced toxicity holds potential benefits for halting and treating and perhaps preventing AD. Here, we report that ...

Mitochondria are critical regulator of cell metabolism; thus, mitochondrial dysfunction is associated with many metabolic disorders. Defects in oxidative phosphorylation, ROS production, or mtDNA mutations are the main causes of mitochondrial dysfunction in many pathological conditions such as IR/diabetes, metabolic syndrome, cardiovascular diseases, and cancer. Thus, targeting mitochondria has...

The mitochondrial respiratory chain (RC) is responsible for providing most of the cellular energy in the form of ATP, and is also one of the main sites of reactive oxygen species (ROS) formation. The RC, consisting of five enzyme complexes in the inner mitochondrial membrane, is unique in its bipartite dependence on both nuclear and mitochondrial DNA (mtDNA). One example of this is mitochondria...

Background and Objective: Alzheimer’s disease (AD) is a neurodegenerative disorder which is associated with extracellular accumulation of amyloid beta (Aβ) plaques. AD is accompanied by mitochondrial dysfunction and energy metabolism reduction. Fibroblast growth factor 21 (FGF21) is an endogenous polypeptide which its beneficial effects have been demonstrated on mitochondrial function, energy m...

Most of the living organisms derive their energy requirements from ingested food material through controlled metabolic reactions. Prokaryotes like bacteria obtain the ATP, the energy subunit from series of enzymatic reactions which occur in the cytosol [1]. In contrast to prokaryotes, eukaryotes have evolved a highly specialized double membrane organelles i.e., mitochondria encompassing electro...

results indicate that after the injection of MSH(4-10)DTPA-l “In, radioactivity is eliminated from the blood with a physiological half-life of 0.19 h. This compares with 1 1 h for bisMSH-DTPA injected by the same route IS]. As a consequence of this rapid elimination, tumour radioactivity was well differentiated from the background by 4 h and at this time, the mean tumour/blood ratio was 10.6 f ...

The current mainstream view of organ failure induced by sepsis revolves around inflammation and loss of vascular control. However, there has been a resurgence in interest in bioenergetic failure due to mitochondrial dysfunction. This concept is not new--studies date back 30 years; however, the data have been highly conflicting with findings of either decreased, increased or unchanged mitochondr...

Increased production of reactive oxygen species in mitochondria, accumulation of mitochondrial DNA damage, and progressive respiratory chain dysfunction are associated with atherosclerosis or cardiomyopathy in human investigations and animal models of oxidative stress. Moreover, major precursors of atherosclerosis-hypercholesterolemia, hyperglycemia, hypertriglyceridemia, and even the process o...