keyword
MENU ▼
Read by QxMD icon Read
search

Cardiolipin

keyword
https://www.readbyqxmd.com/read/28735170/effects-of-different-solvents-on-the-conformations-of-apoptotic-cytochrome-c-structural-insights-from-molecular-dynamics-simulation
#1
Gurusamy Muneeswaran, Subramanian Kartheeswaran, Kaliappan Muthukumar, Christopher D Dharmaraj, Chandran Karunakaran
Cytochrome c (cyt-c) upon binding with cardiolipin acquires peroxidase activity and is strictly connected to the pathogenesis of many human diseases including neurodegenerative and cardiovascular diseases. Interaction of cyt-c with cardiolipin mimics partial unfolding/conformational changes of cyt-c in different solvent environments. Dynamic pictures of these conformational changes of cyt-c are crucial in understanding their physiological roles in mitochondrial functions. Therefore, atomistic molecular dynamics (MD) simulations have been carried out to investigate the effect of different solvents (water, urea/water, MeOH and DMSO) on the structure and conformations of apoptotic cyt-c (Fe(3+))...
July 14, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28727417/oxygen-dependent-lipid-profiles-of-3d-cultured-human-chondrocytes-revealed-by-maldi-msi
#2
Brenda Bakker, Gert B Eijkel, Ron M A Heeren, Marcel Karperien, Janine N Post, Berta Cillero Pastor
Articular cartilage is exposed to a gradient of oxygen levels ranging from 5% at the surface to 1% in the deepest layers. While most cartilage research is performed in supraphysiological oxygen levels (19-21%), culturing chondrocytes under hypoxic oxygen levels (≤ 8%) promotes the chondrogenic phenotype. Exposure of cells to various oxygen levels alters their lipid metabolism, but detailed studies examining how hypoxia affects lipid metabolism in chondrocytes are lacking. To better understand the chondrocyte's behavior in response to oxygen we cultured 3D pellets of human primary chondrocytes in normoxia (20% oxygen) and hypoxia (2...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28718792/recombinant-lipase-from-gibberella-zeae-exhibits-broad-substrate-specificity-a-comparative-study-on-emulsified-and-monomolecular-substrate
#3
Fanghua Wang, Hui Zhang, Zexin Zhao, Ruixia Wei, Bo Yang, Yonghua Wang
Using the classical emulsified system and the monomolecular film technique, the substrate specificity of recombinant Gibberella zeae lipase (rGZEL) that originates from Gibberella zeae was characterized in detail. Under the emulsified reaction system, both phospholipase and glycolipid hydrolytic activities were observed, except for the predominant lipase activity. The optimum conditions for different activity exhibition were also determined. Compared with its lipase activity, a little higher ratio of glycolipid hydrolytic activity (0...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28709976/glutathione-peroxidase-4-catalyzed-reduction-of-lipid-hydroperoxides-in-membranes-the-polar-head-of-membrane-phospholipids-binds-the-enzyme-and-addresses-the-fatty-acid-hydroperoxide-group-toward-the-redox-center
#4
Giorgio Cozza, Monica Rossetto, Valentina Bosello-Travain, Matilde Maiorino, Antonella Roveri, Stefano Toppo, Mattia Zaccarin, Lucio Zennaro, Fulvio Ursini
GPx4 is a monomeric glutathione peroxidase, unique in reducing the hydroperoxide group (-OOH) of fatty acids esterified in membrane phospholipids. This reaction inhibits lipid peroxidation and accounts for enzyme's vital role. Here we investigated the interaction of GPx4 with membrane phospholipids. A cationic surface near the GPx4 catalytic center interacts with phospholipid polar heads. Accordingly, SPR analysis indicates cardiolipin as the phospholipid with maximal affinity to GPx4. Consistent with the electrostatic nature of the interaction, KCl increases the KD...
July 12, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28693421/lipidmatch-an-automated-workflow-for-rule-based-lipid-identification-using-untargeted-high-resolution-tandem-mass-spectrometry-data
#5
Jeremy P Koelmel, Nicholas M Kroeger, Candice Z Ulmer, John A Bowden, Rainey E Patterson, Jason A Cochran, Christopher W W Beecher, Timothy J Garrett, Richard A Yost
BACKGROUND: Lipids are ubiquitous and serve numerous biological functions; thus lipids have been shown to have great potential as candidates for elucidating biomarkers and pathway perturbations associated with disease. Methods expanding coverage of the lipidome increase the likelihood of biomarker discovery and could lead to more comprehensive understanding of disease etiology. RESULTS: We introduce LipidMatch, an R-based tool for lipid identification for liquid chromatography tandem mass spectrometry workflows...
July 10, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28689853/identification-of-patients-with-primary-ovarian-insufficiency-caused-by-autoimmunity
#6
Jing Gao, Xue Jiao, Yujie Dang, Jing Li, Guiyu Li, Ting Han, Yixun Liu, Yingying Qin, Zi-Jiang Chen
Autoimmune pathogenesis is responsible for a subset of primary ovarian insufficiency (POI) cases. The significance of autoantibodies for POI, however, remains unclear. A total of 250 women with idiopathic POI and 256 age-matched healthy women were enrolled. The presence in serum of adrenal cortex autoantibody (AAA), detected by indirect immunofluorescence and non-organ-specific antibodies, including antinuclear antibody, anti-cardiolipin antibody, and anti-double stranded DNA antibody, detected by enzyme-linked immunosorbent assay, was compared...
June 21, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28682614/total-synthesis-of-cardiolipins-containing-chiral-cyclopropane-fatty-acids
#7
Shinsuke Inuki, Ippei Ohta, Shunichi Ishibashi, Masayuki Takamatsu, Koichi Fukase, Yukari Fujimoto
Cardiolipin (CL) is a phospholipid located in both the eukaryotic mitochondrial inner membrane and the bacterial cell membrane. Some bacterial CLs are known to contain cyclopropane moieties in their acyl chains. Although the CLs are thought to be involved in the innate immune response, there have been few attempts at chemical synthesis of the CLs, and detailed studies of their biological activities. Thus, we have developed a synthetic route to CLs containing chiral cyclopropane moieties.
July 6, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28676454/myostatin-deficiency-is-associated-with-lipidomic-abnormalities-in-skeletal-muscles
#8
Narjes Baati, Christine Feillet-Coudray, Gilles Fouret, Barbara Vernus, Bénédicte Goustard, Charles Coudray, Jérome Lecomte, Véronique Blanquet, Laetitia Magnol, Anne Bonnieu, Christelle Koechlin-Ramonatxo
Myostatin (Mstn) deficiency leads to skeletal muscle overgrowth and Mstn inhibition is considered as a promising treatment for muscle-wasting disorders. Mstn gene deletion in mice also causes metabolic changes with decreased mitochondria content, disturbance in mitochondrial respiratory function and increased muscle fatigability. However the impact of MSTN deficiency on these metabolic changes is not fully elucidated. Here, we hypothesized that lack of MSTN will alter skeletal muscle membrane lipid composition in relation with pronounced alterations in muscle function and metabolism...
July 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28655926/effect-of-high-fat-diet-on-phenotype-brain-transcriptome-and-lipidome-in-alzheimer-s-model-mice
#9
Kyong Nyon Nam, Anais Mounier, Cody M Wolfe, Nicholas F Fitz, Alexis Y Carter, Emilie L Castranio, Hafsa I Kamboh, Valerie L Reeves, Jianing Wang, Xianlin Han, Jonathan Schug, Iliya Lefterov, Radosveta Koldamova
We examined the effect of chronic high fat diet (HFD) on amyloid deposition and cognition of 12-months old APP23 mice, and correlated the phenotype to brain transcriptome and lipidome. HFD significantly increased amyloid plaques and worsened cognitive performance compared to mice on normal diet (ND). RNA-seq results revealed that in HFD mice there was an increased expression of genes related to immune response, such as Trem2 and Tyrobp. We found a significant increase of TREM2 immunoreactivity in the cortex in response to HFD, most pronounced in female mice that correlated to the amyloid pathology...
June 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28655155/evolution-of-cytochrome-c-oxidase-in-hypoxia-tolerant-sculpins-cottidae-actinopterygii
#10
Gigi Y Lau, Milica Mandic, Jeffrey G Richards
Vertebrate hypoxia tolerance can emerge from modifications to the oxygen (O2) transport cascade, but whether there is adaptive variation to O2 binding at the terminus of this cascade, mitochondrial cytochrome c oxidase (COX), is not known. In order to address the hypothesis that hypoxia tolerance is associated with enhanced O2 binding by mitochondria we undertook a comparative analysis of COX O2 kinetics across species of intertidal sculpins (Cottidae, Actinopterygii) that vary in hypoxia tolerance. Our analysis revealed a significant relationship between hypoxia tolerance (critical O2 tension of O2 consumption rate; Pcrit), mitochondrial O2 binding affinity (O2 tension at which mitochondrial respiration was half maximal; P50), and COX O2-binding affinity (apparent Michaelis-Menten constant for O2 binding to COX; Km,app O2)...
June 24, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28654702/stomatin-like-protein-2-deficiency-results-in-impaired-mitochondrial-translation
#11
Panagiotis Mitsopoulos, Orsolya Lapohos, Woranontee Weraarpachai, Hana Antonicka, Yu-Han Chang, Joaquín Madrenas
Mitochondria translate the RNAs for 13 core polypeptides of respiratory chain and ATP synthase complexes that are essential for the assembly and function of these complexes. This process occurs in close proximity to the mitochondrial inner membrane. However, the mechanisms and molecular machinery involved in mitochondrial translation are not fully understood, and defects in this process can result in severe diseases. Stomatin-like protein (SLP)-2 is a mainly mitochondrial protein that forms cardiolipin- and prohibitin-enriched microdomains in the mitochondrial inner membrane that are important for the formation of respiratory supercomplexes and their function...
2017: PloS One
https://www.readbyqxmd.com/read/28652611/common-lipid-features-of-lethal-ventricular-tarchyarrhythmias-lvtas-induced-by-myocardial-infarction-and-myocardial-ion-channel-diseases
#12
Jiayan Wu, Qian Wu, Dian Wang, Jing Kong, Wentao Dai, Xingxing Wang, Xiaojun Yu
Lethal ventricular tachyarrhythmia (LVTA) is the most prevalent electrophysiological underpinning of sudden cardiac death (SCD), a condition that occurs in response to multiple pathophysiological abnormalities. The aim of this study was to identify common lipid features of LVTA that were induced by distinct pathophysiological conditions, thereby facilitating the discovery of novel SCD therapeutic targets. Two rat LVTA-SCD models were established to mimic myocardial infarction (MI) and myocardial ion channel diseases...
June 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645246/igmk-paraprotein-from-gammopathy-patient-can-bind-to-cardiolipin-and-interfere-with-coagulation-assay-a-case-report
#13
Xin-Yao Wu, Yu-Feng Yin, Jia-Lin Teng, Li-Wei Zhang, Cheng-de Yang
BACKGROUND: The monoclonal gammopathies are a group of plasma-cell proliferative disorders characterized by the secretion of monoclonal immunoglobulin (M protein or paraprotein). Some rare cases have revealed the specific affinity of paraprotein as autoantibody. Here we report a patient with monoclonal gammopathy of undetermined significance (MGUS) accompanied by a remarkable increase of anticardiolipin antibody (aCL) and an extensively decreased coagulation factor activity, however, without any clinical signs of antiphospholipid syndrome (APS) and bleeding...
June 23, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28634761/unveiling-the-compositional-variety-of-cardiolipins-in-rhodobacter-sphaeroides-by-liquid-chromatography-with-electrospray-ionization-and-multistage-collision-induced-dissociation-mass-spectrometry
#14
Sara Granafei, Ilario Losito, Massimo Trotta, Angela Agostiano, Francesco Palmisano, Tommaso R I Cataldi
Cardiolipins (CL) contained in the lipid extracts of the photosynthetic bacterium Rhodobacter sphaeroides (strain R26) were systematically characterized by reversed-phase liquid chromatography coupled to electrospray ionization mass spectrometry, performed in single (MS), tandem (MS/MS) and sequential (MS(3)) modes using a linear ion trap mass spectrometer. The total number of carbon atoms and C=C bonds of each CL and, subsequently, those related to each of the constituting phosphatidic acid (PA) units, along with the location of the latter on the central glycerol backbone, were inferred from MS and MS/MS data, respectively...
June 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28629188/serum-biomarkers-for-discrimination-between-hepatitis-c-related-arthropathy-and-early-rheumatoid-arthritis
#15
Isabela Siloşi, Lidia Boldeanu, Viorel Biciuşcă, Maria Bogdan, Carmen Avramescu, Citto Taisescu, Vlad Padureanu, Mihail Virgil Boldeanu, Anica Dricu, Cristian Adrian Siloşi
In the present study, we aimed to estimate the concentrations of cytokines (interleukin 6, IL-6, tumor necrosis factor-α, TNF-α) and auto-antibodies (rheumatoid factor IgM isotype, IgM-RF, antinuclear auto-antibodies, ANA, anti-cyclic citrullinated peptide antibodies IgG isotype, IgG anti-CCP3.1, anti-cardiolipin IgG isotype, IgG anti-aCL) in serum of patients with eRA (early rheumatoid arthritis) and HCVrA (hepatitis C virus-related arthropathy) and to assess the utility of IL-6, TNF-α together with IgG anti-CCP and IgM-RF in distinguishing between patients with true eRA and HCVrA, in the idea of using them as differential immunomarkers...
June 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28628337/buckling-under-pressure-curvature-based-lipid-segregation-and-stability-modulation-in-cardiolipin-containing-bilayers
#16
Kevin J Boyd, Nathan N Alder, Eric R May
Mitochondrial metabolic function is affected by the morphology and protein organization of the mitochondrial inner membrane. Cardiolipin (CL) is a unique tetra-acyl lipid that is involved in the maintenance of the highly curved shape of the mitochondrial inner membrane as well as spatial organization of the proteins necessary for respiration and oxidative phosphorylation. Cardiolipin has been suggested to self-organize into lipid domains due to its inverted conical molecular geometry, though the driving forces for this organization are not fully understood...
June 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28628085/opa1-and-cardiolipin-team-up-for-mitochondrial-fusion
#17
Raymond Liu, David C Chan
Fusion between the inner membranes of two mitochondria requires the GTPase optic atrophy 1 (OPA1), but the molecular mechanism is poorly understood. A study now shows that fusion of two liposomes can be performed by OPA1 tethered to just one liposome, through an interaction with the phospholipid cardiolipin on the opposing liposome.
June 19, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28628083/molecular-basis-of-selective-mitochondrial-fusion-by-heterotypic-action-between-opa1-and-cardiolipin
#18
Tadato Ban, Takaya Ishihara, Hiroto Kohno, Shotaro Saita, Ayaka Ichimura, Katsumi Maenaka, Toshihiko Oka, Katsuyoshi Mihara, Naotada Ishihara
Mitochondria are highly dynamic organelles that undergo frequent fusion and fission. Optic atrophy 1 (OPA1) is an essential GTPase protein for both mitochondrial inner membrane (IM) fusion and cristae morphology. Under mitochondria-stress conditions, membrane-anchored L-OPA1 is proteolytically cleaved to form peripheral S-OPA1, leading to the selection of damaged mitochondria for mitophagy. However, molecular details of the selective mitochondrial fusion are less well understood. Here, we showed that L-OPA1 and cardiolipin (CL) cooperate in heterotypic mitochondrial IM fusion...
July 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28627583/deoxyactein-protects-pancreatic-%C3%AE-cells-against-methylglyoxal-induced-oxidative-cell-damage-by-the-upregulation-of-mitochondrial-biogenesis
#19
Kwang Sik Suh, Eun Mi Choi, Woon-Won Jung, Yu Jin Kim, Soo Min Hong, So Yong Park, Sang Youl Rhee, Suk Chon
Methylglyoxal (MG) is one of the major precursors of advanced glycation end products (AGEs), which are considered to be one of the causes of diabetes and its complications. The root and rhizomes of black cohosh (Cimicifuga racemosa) have long been used medicinally, and deoxyactein is one of its major constituents. In the present study, the protective effects of deoxyactein against MG-induced oxidative cell damage were investigated in insulin-producing pancreatic β-cells. We found that deoxyactein protected the pancreatic β-cells against MG-induced cell death...
June 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28627570/determination-of-bending-rigidity-and-tilt-modulus-of-lipid-membranes-from-real-space-fluctuation-analysis-of-molecular-dynamics-simulations
#20
M Doktorova, D Harries, G Khelashvili
We have recently developed a novel computational methodology (termed RSF for Real-Space Fluctuations) to quantify the bending rigidity and tilt modulus of lipid membranes from real-space analysis of fluctuations in the tilt and splay degrees of freedom as sampled in molecular dynamics (MD) simulations. In this article, we present a comprehensive study that combines results from the application of the RSF method to a wide range of lipid bilayer systems that encompass membranes of different fluidities and sizes, including lipids with saturated and unsaturated lipid tails, single and multi-component lipid systems, as well as non-standard lipids such as the four-tailed cardiolipin...
June 28, 2017: Physical Chemistry Chemical Physics: PCCP
keyword
keyword
120251
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"