Edit Publication: Braganza 2019 Mol Aspects Med

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Abstract:	Accumulating studies demonstrate that mitochondrial genetics and function are central to determining the susceptibility to, and prognosis of numerous diseases across all organ systems. Despite this recognition, mitochondrial function remains poorly characterized in humans primarily due to the invasiveness of obtaining viable tissue for mitochondrial studies. Recent studies have begun to test the hypothesis that circulating blood cells, which can be obtained by minimally invasive methodology, can be utilized as a biomarker of systemic bioenergetic function in human populations. Here we present the available methodologies for assessing blood cell bioenergetics and review studies that have applied these techniques to healthy and disease populations. We focus on the validation of this methodology in healthy subjects, as well as studies testing whether blood cell bioenergetics are altered in disease, correlate with clinical parameters, and compare with other methodology for assessing human mitochondrial function. Finally, we present the challenges and goals for the development of this emerging approach into a tool for translational research and personalized medicine. <small>Copyright © 2019 Elsevier Ltd. All rights reserved.</small>
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MiPareas:	Gender Respiration Instruments;methods mt-Biogenesis;mt-density mt-Structure;fission;fusion mt-Membrane mtDNA;mt-genetics nDNA;cell genetics Genetic knockout;overexpression Comparative MiP;environmental MiP Developmental biology Exercise physiology;nutrition;life style mt-Medicine Patients Pharmacology;toxicology mt-Awareness
Pathological states:	COPD Aging;senescence Alzheimer's Autism Cancer Cardiovascular Diabetes Inherited Infectious Myopathy Neurodegenerative Obesity Parkinson's Sepsis Other
Stress conditions:	Hypoxia Cell death Cryopreservation Ischemia-reperfusion Permeability transition Oxidative stress;RONS Temperature Mitochondrial disease
Organism:	Pig Human Mouse Rat Guinea pig Bovines Horse Dog Rabbit Cat Other mammals Chicken Zebrafish Drosophila Artemia Caenorhabditis elegans Saccharomyces cerevisiae Birds Reptiles Amphibians Fishes Chelicerates Crustaceans Hexapods Myriapods Annelids Molluscs Nematodes Other invertebrates Fungi Plants Protists Eubacteria Archea Algae
Tissues;cells:	Fat Heart Skeletal muscle Nervous system Liver Kidney Lung;gill Islet cell;pancreas;thymus Endothelial;epithelial;mesothelial cell Blood cells Genital Other cell lines CHO HEK HeLa Neuroblastoma Fibroblast HUVEC Macrophage-derived Lymphocyte Platelet Stem cells
Preparations:	SMP Intact organism Intact organ Permeabilized cells Permeabilized tissue Homogenate Isolated mitochondria Chloroplasts Enzyme Oxidase;biochemical oxidation Intact cells
Enzyme:	Complex I Adenine nucleotide translocase Complex II;succinate dehydrogenase Complex III Complex IV;cytochrome c oxidase Complex V;ATP synthase Inner mt-membrane transporter Marker enzyme Supercomplex TCA cycle and matrix dehydrogenases Uncoupling protein
Regulation; kinetics:	pH Aerobic glycolysis ADP ATP ATP production AMP Calcium Coupling efficiency;uncoupling Cyt c Flux control Inhibitor Ion;substrate transport mt-Membrane potential Oxygen kinetics PCr;Cr Phosphate Redox state Substrate Temperature Threshold;excess capacity Uncoupler Fatty acid Amino acid Q-junction effect
Coupling:	ET LEAK ROUTINE OXPHOS
Pathways:	F N S Gp DQ CIV NS Other combinations ROX
High-resolution respirometry:	pH Oxygraph-2k TIP2k O2k-Fluorometer NO TPP Ca O2k-Spectrophotometer O2k-Manual O2k-Protocol Theory NextGen-O2k
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Free text: If the abstract is longer than 500 words, please enter additional information here. == Selected quotes == ::::* .. a wide range of metabolic diseases .. affect multiple organs and have slow and progressive chronic symptoms that vary in onset from birth to late adulthood (Cohen and Gold, 2001; Pieczenik and Neustadt, 2007; Wallace, 1994,2010; Finsterer, 2008). Since mitochondrial function underlies the pathogenesis of these diseases, the systems that are frequently affected are those that require high energy and give rise to symptoms that include vision, hearing and respiratory problems, cardiovascular abnormalities, neurological and learning problems, and gastrointestinal disorders (Pieczenik and Neustadt, 2007; Finsterer, 2004; Stork and Renshaw,2005; Nierenberg et al., 2013). ::: An interesting reference (p 11) ::::* Polarographic, E.G., 2008. Oxygen sensors, the oxygraph, and high-resolution respirometry to assess mitochondrial function. In: Dykens, J.A., Will, Y. (Eds.), Drug‐Induced Mitochondrial Dysfunction. John Wiley & Sons, pp. 327–352. - [[Gnaiger 2008 POS | »Bioblast link«]]

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