keyword
MENU ▼
Read by QxMD icon Read
search

Mitochondria complex

keyword
https://www.readbyqxmd.com/read/29235020/do-gstm1-and-gstt1-polymorphisms-influence-the-risk-of-developing-mitochondrial-diseases-in-a-tunisian-population
#1
Raouia Ghorbel, Ghada Ben Salah, Rania Ghorbel, Afif Ben Mahmoud, Imen Chamkha, Emna Mkaouar-Rebai, Leila Ammar-Keskes, Faiza Fakhfakh
Mitochondria play an essential role to supply the cell with metabolic energy in the form of adenosine triphosphate (ATP) through oxidative phosphorylation (OXPHOS). As a consequence, they are also the primary source of cellular reactive oxygen species (ROS) which can cause oxidative damage of individual respiratory chain complexes. Indeed, affected OXPHOS subunits result in decreases in ATP production and increases in ROS formation which generate oxidative phosphorylation deficiency leading to mitochondrial dysfunctions...
December 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29234670/mitochondrial-energy-metabolism-is-required-for-lifespan-extension-by-the-spastic-paraplegia-associated-protein-spartin
#2
Julia Ring, Patrick Rockenfeller, Claudia Abraham, Jelena Tadic, Michael Poglitsch, Katherina Schimmel, Julia Westermayer, Simon Schauer, Bettina Achleitner, Christa Schimpel, Barbara Moitzi, Gerald N Rechberger, Stephan J Sigrist, Didac Carmona-Gutierrez, Guido Kroemer, Sabrina Büttner, Tobias Eisenberg, Frank Madeo
Hereditary spastic paraplegias, a group of neurodegenerative disorders, can be caused by loss-of-function mutations in the protein spartin. However, the physiological role of spartin remains largely elusive. Here we show that heterologous expression of human or Drosophila spartin extends chronological lifespan of yeast, reducing age-associated ROS production, apoptosis, and necrosis. We demonstrate that spartin localizes to the proximity of mitochondria and physically interacts with proteins related to mitochondrial and respiratory metabolism...
November 30, 2017: Microbial Cell
https://www.readbyqxmd.com/read/29234000/peritoneal-tissue-resident-macrophages-are-metabolically-poised-to-engage-microbes-using-tissue-niche-fuels
#3
Luke C Davies, Christopher M Rice, Erika M Palmieri, Philip R Taylor, Douglas B Kuhns, Daniel W McVicar
The importance of metabolism in macrophage function has been reported, but the in vivo relevance of the in vitro observations is still unclear. Here we show that macrophage metabolites are defined in a specific tissue context, and these metabolites are crucially linked to tissue-resident macrophage functions. We find the peritoneum to be rich in glutamate, a glutaminolysis-fuel that is exploited by peritoneal-resident macrophages to maintain respiratory burst during phagocytosis via enhancing mitochondrial complex-II metabolism...
December 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/29233878/host-pathogen-interactions-and-subversion-of-autophagy
#4
REVIEW
David G McEwan
Macroautophagy ('autophagy'), is the process by which cells can form a double-membraned vesicle that encapsulates material to be degraded by the lysosome. This can include complex structures such as damaged mitochondria, peroxisomes, protein aggregates and large swathes of cytoplasm that can not be processed efficiently by other means of degradation. Recycling of amino acids and lipids through autophagy allows the cell to form intracellular pools that aid survival during periods of stress, including growth factor deprivation, amino acid starvation or a depleted oxygen supply...
December 12, 2017: Essays in Biochemistry
https://www.readbyqxmd.com/read/29233179/immature-morphological-properties-in-subcellular-scale-structures-in-the-dentate-gyrus-of-schnurri-2-knockout-mice-a-model-for-schizophrenia-and-intellectual-disability
#5
Akito Nakao, Naoyuki Miyazaki, Koji Ohira, Hideo Hagihara, Tsuyoshi Takagi, Nobuteru Usuda, Shunsuke Ishii, Kazuyoshi Murata, Tsuyoshi Miyakawa
Accumulating evidence suggests that subcellular-scale structures such as dendritic spine and mitochondria may be involved in the pathogenesis/pathophysiology of schizophrenia and intellectual disability. Previously, we proposed mice lacking Schnurri-2 (Shn2; also called major histocompatibility complex [MHC]-binding protein 2 [MBP-2], or human immunodeficiency virus type I enhancer binding protein 2 [HIVEP2]) as a schizophrenia and intellectual disability model with mild chronic inflammation. In the mutants' brains, there are increases in C4b and C1q genes, which are considered to mediate synapse elimination during postnatal development...
December 12, 2017: Molecular Brain
https://www.readbyqxmd.com/read/29228768/recovery-of-mrs3%C3%AE-mrs4%C3%AE-saccharomyces-cerevisiae-cells-under-iron-sufficient-conditions-and-the-role-of-fe580
#6
Michael J Moore, Joshua Wofford, Andrew Dancis, Paul Alan Lindahl
Mrs3 and Mrs4 are mitochondrial inner membrane proteins that deliver an unidentified cytosolic iron species into the matrix for use in iron-sulfur-cluster (ISC) and heme biosynthesis. The Mrs3/4 double-deletion strain (ΔΔ) grew slowly in iron-deficient glycerol/ethanol medium but recovered to WT rates in iron-sufficient medium. ΔΔ cells grown under both iron-deficient and iron-sufficient respiring conditions accumulated large amounts of iron relative to WT cells, indicating iron homeostatic dysregulation regardless of nutrient iron status...
December 11, 2017: Biochemistry
https://www.readbyqxmd.com/read/29227865/cytochrome-b5-reductase-is-the-component-from-neuronal-synaptic-plasma-membrane-vesicles-that-generates-superoxide-anion-upon-stimulation-by-cytochrome-c
#7
Alejandro K Samhan-Arias, Sofia Fortalezas, Cristina M Cordas, Isabel Moura, José J G Moura, Carlos Gutierrez-Merino
In this work, we measured the effect of cytochrome c on the NADH-dependent superoxide anion production by synaptic plasma membrane vesicles from rat brain. In these membranes, the cytochrome c stimulated NADH-dependent superoxide anion production was inhibited by antibodies against cytochrome b5 reductase linking the production to this enzyme. Measurement of the superoxide anion radical generated by purified recombinant soluble and membrane cytochrome b5 reductase corroborates the production of the radical by different enzyme isoforms...
November 27, 2017: Redox Biology
https://www.readbyqxmd.com/read/29227814/synthesis-and-evaluation-of-99mtc-re-tricarbonyl-complexes-of-the-triphenylphosphonium-cation-for-mitochondrial-targeting
#8
Georgios Paparidis, Melpomeni Akrivou, Vicky Tsachouridou, Antonio Shegani, Ioannis S Vizirianakis, Ioannis Pirmettis, Minas S Papadopoulos, Dionysia Papagiannopoulou
INTRODUCTION: Lipophilic delocalized cations accumulate in tumor cell mitochondria due to their higher transmembrane potential. In this work, this strategy was adopted for the development of 99mTc tumor-targeted imaging agents. METHODS: Two tridentate ligands containing the triphenylphosphonium cation, L1 (S-cysteinyl) and L2 (N-iminodiacetate) as well as the respective 99mTc/ReL1 and 99mTc/ReL2 tricarbonyl complexes were synthesized. The effect of the ligands and the Re complexes on cell growth in U-87 MG glioblastoma cells was assessed...
November 13, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29225014/leber-s-hereditary-optic-neuropathy-caused-by-a-mutation-in-mitochondrial-trnathr-in-eight-chinese-pedigrees
#9
Juanjuan Zhang, Yanchun Ji, Xiaoling Liu, Jie Chen, Bibin Wang, Minglian Zhang, Min-Xin Guan
PURPOSE: The purpose of this study was to investigate the pathophysiology underlying Leber's hereditary optic neuropathy (LHON)-associated mitochondrial tRNA mutation. METHODS: Severn hundred ninety-seven Han Chinese subjects underwent clinical and genetic evaluation and analysis of mitochondrial DNA (mtDNA). The cybrid cell lines were constructed by transferring mitochondria from lymphoblastoid cell lines derived from a Chinese family into mtDNA-less (ρo) cells...
December 7, 2017: Mitochondrion
https://www.readbyqxmd.com/read/29224958/renal-involvement-in-neuropathy-ataxia-retinitis-pigmentosa-narp-syndrome-a-case-report
#10
Sandrine Lemoine, Marine Panaye, Maud Rabeyrin, Elisabeth Errazuriz-Cerda, Bénédicte Mousson de Camaret, Philippe Petiot, Laurent Juillard, Fitsum Guebre-Egziabher
We report a case of a patient who had the mitochondrial cytopathy complex of neuropathy, ataxia, and retinitis pigmentosa (NARP) syndrome diagnosed at age 11 years with a biopsy-proven kidney involvement that progressed to end-stage renal disease at age 21 years. Mutations of mitochondrial DNA (mtDNA) are maternally inherited and lead to mitochondrial cytopathies with predominant neurologic manifestations: psychomotor retardation, epilepsy, ataxia, neuropathy, and myopathy. Given the ubiquitous nature of mitochondria, cellular dysfunction can also appear in tissues with high metabolic turnover; thus, there can be cardiac, digestive, ophthalmologic, and kidney complications...
December 7, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29223474/fine-tuning-of-store-operated-calcium-entry-by-fast-and-slow-ca2-dependent-inactivation-involvement-of-saraf
#11
REVIEW
Isaac Jardín, Letizia Albarran, Ginés M Salido, Jose J López, Stewart O Sage, Juan A Rosado
Store-operated Ca2+ entry (SOCE) is a functionally relevant mechanism for Ca2+ influx present in electrically excitable and non-excitable cells. Regulation of Ca2+ entry through store-operated channels is essential to maintain an appropriate intracellular Ca2+ homeostasis and prevent cell damage. Calcium-release activated channels exhibit Ca2+-dependent inactivation mediated by two temporally separated mechanisms: fast Ca2+-dependent inactivation takes effect in the order of milliseconds and involves the interaction of Ca2+ with residues in the channel pore while slow Ca2+-dependent inactivation (SCDI) develops over tens of seconds, requires a global rise in [Ca2+]cyt and is a mechanism regulated by mitochondria...
December 6, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29223159/factors-beyond-enolase-2-and-mitochondrial-lysyl-trna-synthetase-precursor-are-required-for-trna-import-into-yeast-mitochondria
#12
M V Baleva, M Meyer, N Entelis, I Tarassov, P Kamenski, B Masquida
In yeast, the import of tRNALys with CUU anticodon (tRK1) relies on a complex mechanism where interaction with enolase 2 (Eno2p) dictates a deep conformational change of the tRNA. This event is believed to mask the tRNA from the cytosolic translational machinery to re-direct it towards the mitochondria. Once near the mitochondrial outer membrane, the precursor of the mitochondrial lysyl-tRNA synthetase (preMsk1p) takes over enolase to carry the tRNA within the mitochondrial matrix, where it is supposed to participate in translation following correct refolding...
November 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/29222974/cold-atmospheric-plasma-cap-a-novel-physicochemical-source-induces-neural-differentiation-through-cross-talk-between-the-specific-rons-cascade-and-trk-ras-erk-signaling-pathway
#13
Ja-Young Jang, Young June Hong, Junsup Lim, Jin Sung Choi, Eun Ha Choi, Seongman Kang, Hyangshuk Rhim
Plasma, formed by ionization of gas molecules or atoms, is the most abundant form of matter and consists of highly reactive physicochemical species. In the physics and chemistry fields, plasma has been extensively studied; however, the exact action mechanisms of plasma on biological systems, including cells and humans, are not well known. Recent evidence suggests that cold atmospheric plasma (CAP), which refers to plasma used in the biomedical field, may regulate diverse cellular processes, including neural differentiation...
November 30, 2017: Biomaterials
https://www.readbyqxmd.com/read/29222784/methods-for-quantitative-analysis-of-axonal-cargo-transport
#14
Matias Alloatti, Luciana Bruno, Tomas L Falzone
Neurons rely on complex axonal transport mechanisms that mediate the intracellular dynamics of proteins, vesicles, and mitochondria along their high polarized structure. The fast improvement of live imaging techniques of fluorescent cargos allowed the identification of the diverse motion properties of different transported molecules. These properties arise as the result of molecular interactions between many players involved in axonal transport. Motor proteins, microtubule tracks, cargo association, and even axonal viscosity contribute to the proper axonal dynamics of different cargos...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222160/the-interactome-of-intact-mitochondria-by-cross-linking-mass-spectrometry-provides-evidence-for-co-existing-respiratory-supercomplexes
#15
Fan Liu, Philip Lössl, Beverley M Rabbitts, Robert S Balaban, Albert J R Heck
Mitochondria exert an immense amount of cytophysiological functions, but the structural basis of most of these processes is still poorly understood. Here we use cross-linking mass spectrometry to probe the organization of proteins in native mouse heart mitochondria. Our approach provides the largest survey of mitochondrial protein interactions reported so far. In total, we identify 3,322 unique residue-to-residue contacts involving half of the mitochondrial proteome detected by bottom-up proteomics. The obtained mitochondrial protein interactome gives insights in the architecture of defined protein assemblies, the sub-mitochondrial localization, and the mitochondrial localization of five proteins not yet included in the MitoCarta database...
December 8, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29222033/multiple-perspectives-of-qingkailing-injection-fraction-single-compound-in-revealing-the-hepatotoxicity-of-baicalin-and-hyodeoxycholic-acid
#16
Jiayu Zhang, Shifeng Wang, Lulu Xu, Qiao Zhang, Zhanpeng Shang, Yanling Zhang, Qinghua Wu, Shiyou Li, Yanjiang Qiao
ETHNOPHARMACOLOGICAL RELEVANCE: The complexity of ingredients in traditional Chinese medical formulas and the limited consideration of toxicological responses are fundamental issues that hamper prognostic information of drug quality control. MATERIALS AND METHODS: A multidisciplinary approach for quality control of Qingkailing injection (QKL) regarding drug induced liver toxicity was described for the first time. High content image analysis (HCA) was combined with reverse-phase chromatographic separation and high-resolution MS detection technologies to provide the dynamic responses of HepG2 cell injury...
December 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29222029/rapid-regulation-of-substrate-use-for-oxidative-phosphorylation-during-a-single-session-of-high-intensity-interval-or-aerobic-exercises-in-different-rat-skeletal-muscles
#17
Eduarda Lopes Martins, Juliana Carvalho Ricardo, Eduardo de-Souza-Ferreira, Juliana Camacho-Pereira, Dionizio Ramos-Filho, Antonio Galina
Different exercise protocols lead to long-term adaptations that are related to increased mitochondrial content through the activation of mitochondrial biogenesis. However, immediate mitochondrial response to exercise and energetic substrate utilization is still unknown. We evaluate the mitochondrial physiology of two types rat skeletal muscle fibres immediately after a single session of high intensity interval exercise (HIIE) or aerobic exercise (AER). We found AER was able to reduce the ATP synthesis dependent oxygen flux in the tibialis (TA) when stimulated by complex I and II substrates...
December 5, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29220698/synergistic-interaction-of-fatty-acids-and-oxysterols-impairs-mitochondrial-function-and-limits-liver-adaptation-during-nafld-progression
#18
Francesco Bellanti, Rosanna Villani, Rosanna Tamborra, Maria Blonda, Giuseppina Iannelli, Giorgia di Bello, Antonio Facciorusso, Giuseppe Poli, Luigi Iuliano, Carlo Avolio, Gianluigi Vendemiale, Gaetano Serviddio
The complete mechanism accounting for the progression from simple steatosis to steatohepatitis in nonalcoholic fatty liver disease (NAFLD) has not been elucidated. Lipotoxicity refers to cellular injury caused by hepatic free fatty acids (FFAs) and cholesterol accumulation. Excess cholesterol autoxidizes to oxysterols during oxidative stress conditions. We hypothesize that interaction of FAs and cholesterol derivatives may primarily impair mitochondrial function and affect biogenesis adaptation during NAFLD progression...
December 5, 2017: Redox Biology
https://www.readbyqxmd.com/read/29217202/cell-free-production-purification-and-characterization-of-human-mitochondrial-adp-atp-carriers
#19
Aleksandra Woznicka-Misaila, Céline Juillan-Binard, Delphine Baud, Eva Pebay-Peyroula, Stéphanie Ravaud
Mitochondrial Carriers (MCs) are responsible for fluent traffic of a variety of compounds that need to be shuttled via mitochondrial inner membranes to maintain cell metabolism. The ADP/ATP Carriers (AACs) are responsible for the import of ADP inside the mitochondria and the export of newly synthesized ATP. In human, four different AACs isoforms are described which are expressed in tissue-specific manner. They are involved in different genetic diseases and play a role in cancerogenesis. Up to now only the structures of the bovine (isoform 1) and yeast (isoforms 2 and 3) AAC have been determined in one particular conformation, obtained in complex with the CATR inhibitor...
December 4, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/29217155/pleiotropic-neuropathological-and-biochemical-alterations-associated-with-myo5a-mutation-in-a-rat-model
#20
Kerstin K Landrock, Patti Sullivan, Heidi Martini-Stoica, David S Goldstein, Brett H Graham, Shinya Yamamoto, Hugo J Bellen, Richard A Gibbs, Rui Chen, Marcello D'Amelio, George Stoica
In this study, we analyze the neuropathological and biochemical alterations involved in the pathogenesis of a neurodegenerative/movement disorder during different developmental stages in juvenile rats with a mutant Myosin5a (Myo5a). In mutant rats, a spontaneous autosomal recessive mutation characterized by the absence of Myo5a protein expression in the brain is associated with a syndrome of locomotor dysfunction, altered coat color, and neuroendocrine abnormalities. Myo5a encodes a myosin motor protein required for transport and proper distribution of subcellular organelles in somatodendritic processes in neurons...
December 4, 2017: Brain Research
keyword
keyword
109464
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"