Electron-transport chain and coupled oxidative phosphorylation in methanol-grown Paracoccus denitrificans

1978 ◽  
Vol 118 (1) ◽  
pp. 13-20 ◽  
Author(s):  
H. W. Van Verseveld ◽  
A. H. Stouthamer
Keyword(s):  
Electron Transport ◽  
Oxidative Phosphorylation ◽  
Electron Transport Chain ◽  
Paracoccus Denitrificans ◽  
Transport Chain

scholarly journals Anesthesia-Sepsis-Associated Alterations in Liver Gene Expression Profiles and Mitochondrial Oxidative Phosphorylation Complexes

2020 ◽  
Vol 7 ◽  
Author(s):  
Hari Prasad Osuru ◽  
Umadevi Paila ◽  
Keita Ikeda ◽  
Zhiyi Zuo ◽  
Robert H. Thiele
Keyword(s):  
Gene Expression ◽  
Electron Transport ◽  
Oxidative Phosphorylation ◽  
Electron Transport Chain ◽  
Expression Profiles ◽  
Volatile Anesthetic ◽  
Heme Oxygenase 1 ◽  
Complex Ii ◽  
Transport Chain ◽  
The Impact

Background: Hepatic dysfunction plays a major role in adverse outcomes in sepsis. Volatile anesthetic agents may protect against organ dysfunction in the setting of critical illness and infection. The goal of this study was to study the impact of Sepsis-inflammation on hepatic subcellular energetics in animals anesthetized with both Propofol (intravenous anesthetic agent and GABA agonist) and Isoflurane (volatile anesthetic i.e., VAA).Methods: Sprague-Dawley rats were anesthetized with Propofol or isoflurane. Rats in each group were randomized to celiotomy and closure (control) or cecal ligation and puncture “CLP” (Sepsis-inflammation) for 8 h.Results: Inflammation led to upregulation in hepatic hypoxia-inducible factor-1 in both groups. Rats anesthetized with isoflurane also exhibited increases in bcl-2, inducible nitric oxide synthase, and heme oxygenase-1(HO-1) during inflammation, whereas rats anesthetized with Propofol did not. In rats anesthetized with isoflurane, decreased mRNA, protein (Complex II, IV, V), and activity levels (Complex II/III,IV,V) were identified for all components of the electron transport chain, leading to a decrease in mitochondrial ATP. In contrast, in rats anesthetized with Propofol, these changes were not identified after exposure to inflammation. RNA-Seq and real-time quantitative PCR (qPCR) expression analysis identified a substantial difference between groups (isoflurane vs. Propofol) in mitogen-activated protein kinase (MAPK) related gene expression following exposure to Sepsis-inflammation.Conclusions: Compared to rats anesthetized with Propofol, those anesthetized with isoflurane exhibit more oxidative stress, decreased oxidative phosphorylation protein expression, and electron transport chain activity and increased expression of organ-protective proteins.

scholarly journals Stress signalling dynamics of the mitochondrial electron transport chain and oxidative phosphorylation system in higher plants

2019 ◽  
Vol 125 (5) ◽  
pp. 721-736 ◽  
Author(s):  
Corentin Dourmap ◽  
Solène Roque ◽  
Amélie Morin ◽  
Damien Caubrière ◽  
Margaux Kerdiles ◽  
...  
Keyword(s):  
Climate Change ◽  
Electron Transport ◽  
Oxidative Phosphorylation ◽  
Electron Transport Chain ◽  
Plant Mitochondria ◽  
Mitochondrial Electron Transport Chain ◽  
Oxidative Phosphorylation System ◽  
Transport Chain ◽  
Wide Range ◽  
Stress Signalling

Abstract Background Mitochondria play a diversity of physiological and metabolic roles under conditions of abiotic or biotic stress. They may be directly subjected to physico-chemical constraints, and they are also involved in integrative responses to environmental stresses through their central position in cell nutrition, respiration, energy balance and biosyntheses. In plant cells, mitochondria present various biochemical peculiarities, such as cyanide-insensitive alternative respiration, and, besides integration with ubiquitous eukaryotic compartments, their functioning must be coupled with plastid functioning. Moreover, given the sessile lifestyle of plants, their relative lack of protective barriers and present threats of climate change, the plant cell is an attractive model to understand the mechanisms of stress/organelle/cell integration in the context of environmental stress responses. Scope The involvement of mitochondria in this integration entails a complex network of signalling, which has not been fully elucidated, because of the great diversity of mitochondrial constituents (metabolites, reactive molecular species and structural and regulatory biomolecules) that are linked to stress signalling pathways. The present review analyses the complexity of stress signalling connexions that are related to the mitochondrial electron transport chain and oxidative phosphorylation system, and how they can be involved in stress perception and transduction, signal amplification or cell stress response modulation. Conclusions Plant mitochondria are endowed with a diversity of multi-directional hubs of stress signalling that lead to regulatory loops and regulatory rheostats, whose functioning can amplify and diversify some signals or, conversely, dampen and reduce other signals. Involvement in a wide range of abiotic and biotic responses also implies that mitochondrial stress signalling could result in synergistic or conflicting outcomes during acclimation to multiple and complex stresses, such as those arising from climate change.

Mitochondrial Disorder for Muscle Biopsy

2013 ◽  
Author(s):  
J. Fay Jou ◽  
Lori A Aronson ◽  
Jacqueline W Morillo-Delerme
Keyword(s):  
Energy Metabolism ◽  
Electron Transport ◽  
Oxidative Phosphorylation ◽  
Mitochondrial Disease ◽  
Electron Transport Chain ◽  
Mitochondrial Disorder ◽  
Metabolic Complications ◽  
Transport Chain ◽  
Increased Risk ◽  
Anesthetic Considerations

Mitochondrial disease (mtD) is a genetically, biochemically, and clinically heterogeneous group of disorders that arise most commonly from defects in the oxidative phosphorylation or electron transport chain involved in energy metabolism. These patients have an increased risk for cardiac, respiratory, neurologic, and metabolic complications from anesthesia. Consequently, there are several anesthetic considerations for patients with mtD.

scholarly journals FOXM1 nuclear transcription factor translocates into mitochondria and inhibits oxidative phosphorylation

2020 ◽  
Vol 31 (13) ◽  
pp. 1411-1424
Author(s):  
Markaisa Black ◽  
Paritha Arumugam ◽  
Samriddhi Shukla ◽  
Arun Pradhan ◽  
Vladimir Ustiyan ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Membrane Potential ◽  
Electron Transport ◽  
Oxidative Phosphorylation ◽  
Mitochondrial Respiration ◽  
Electron Transport Chain ◽  
Nuclear Transcription Factor ◽  
Transport Chain

It was found that the transcription factor FOXM1 translocates into mitochondria and inhibits mitochondrial respiration and membrane potential, directly binds to mitochondrial PTCD1, and inhibits the electron transport chain by stabilizing PTCD1.

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