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mitochondria and cardiovascular disease

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https://www.readbyqxmd.com/read/29750172/proanthocyanidins-against-oxidative-stress-from-molecular-mechanisms-to-clinical-applications
#1
REVIEW
Lingyu Yang, Dehai Xian, Xia Xiong, Rui Lai, Jing Song, Jianqiao Zhong
Proanthocyanidins (PCs) are naturally occurring polyphenolic compounds abundant in many vegetables, plant skins (rind/bark), seeds, flowers, fruits, and nuts. Numerous in vitro and in vivo studies have demonstrated myriad effects potentially beneficial to human health, such as antioxidation, anti-inflammation, immunomodulation, DNA repair, and antitumor activity. Accumulation of prooxidants such as reactive oxygen species (ROS) exceeding cellular antioxidant capacity results in oxidative stress (OS), which can damage macromolecules (DNA, lipids, and proteins), organelles (membranes and mitochondria), and whole tissues...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29726706/-i-hibiscus-sabdariffa-i-roselle-polyphenol-rich-extract-averts-cardiac-functional-and-structural-abnormalities-in-type-1-diabetic-rats
#2
Nur Liyana Mohammed Yusof, Satirah Zainalabidin, Norsyahida Mohd Fauzi, Siti Balkis Budin
Diabetes mellitus is often associated with cardiac functional and structural alteration, an initial event leading to cardiovascular complications. <i>Hibiscus sabdariffa</i> or roselle has been widely proven as an antioxidant and recently has incited research interest for its potential in treating cardiovascular disease. Therefore, this study aimed to determine the cardioprotective effects of <i>H. sabdariffa </i>(roselle) polyphenol-rich extract (HPE) in type-1 induced diabetic rats...
May 4, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29710840/nadph-oxidases-and-mitochondria-in-vascular-senescence
#3
REVIEW
Gloria Salazar
Aging is the major risk factor in the development of cardiovascular diseases (CVDs), including hypertension, atherosclerosis, and myocardial infarction. Oxidative stress caused by overproduction of reactive oxygen species (ROS) and/or by reduced expression of antioxidant enzymes is a major contributor to the progression of vascular senescence, pathologic remodeling of the vascular wall, and disease. Both oxidative stress and inflammation promote the development of senescence, a process by which cells stop proliferating and become dysfunctional...
April 29, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29705839/stress-and-systemic-inflammation-yin-yang-dynamics-in-health-and-diseases
#4
Qing Yan
Studies in psychoneuroimmunology (PNI) would provide better insights into the "whole mind-body system." Systems biology models of the complex adaptive systems (CASs), such as a conceptual framework of "Yin-Yang dynamics," may be helpful for identifying systems-based biomarkers and targets for more effective prevention and treatment. The disturbances in the Yin-Yang dynamical balance may result in stress, inflammation, and various disorders including insomnia, Alzheimer's disease, obesity, diabetes, cardiovascular diseases, skin disorders, and cancer...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29700084/reactive-oxygen-species-in-metabolic-and-inflammatory-signaling
#5
REVIEW
Steven J Forrester, Daniel S Kikuchi, Marina S Hernandes, Qian Xu, Kathy K Griendling
Reactive oxygen species (ROS) are well known for their role in mediating both physiological and pathophysiological signal transduction. Enzymes and subcellular compartments that typically produce ROS are associated with metabolic regulation, and diseases associated with metabolic dysfunction may be influenced by changes in redox balance. In this review, we summarize the current literature surrounding ROS and their role in metabolic and inflammatory regulation, focusing on ROS signal transduction and its relationship to disease progression...
March 16, 2018: Circulation Research
https://www.readbyqxmd.com/read/29689347/regulation-of-cardiovascular-development-and-homeostasis-by-the-adrenomedullin-ramp-system
#6
Takayuki Shindo, Megumu Tanaka, Akiko Kamiyoshi, Yuka Ichikawa-Shindo, Hisaka Kawate, Akihiro Yamauchi, Takayuki Sakurai
Adrenomedullin (AM), a member of the calcitonin peptide superfamily, is a peptide involved in both the pathogenesis of cardiovascular diseases and circulatory homeostasis. Its receptor, calcitonin receptor-like receptor (CLR), associates with an accessory protein, receptor activity-modifying protein (RAMP). Depending upon which the three RAMP isoforms (RAMP1-3) it interacts with, CLR functions as a receptor for AM or other calcitonin family peptides. AM knockout mice (-/-) died mid-gestation due to abnormalities in vascular development...
April 21, 2018: Peptides
https://www.readbyqxmd.com/read/29680477/yap1-tead1-signaling-controls-angiogenesis-and-mitochondrial-biogenesis-through-pgc1%C3%AE
#7
Akiko Mammoto, Megan Muyleart, Andrew Kadlec, David Gutterman, Tadanori Mammoto
Mitochondria contribute to key processes of cellular function, while mitochondrial dysfunction is implicated in metabolic disorders, neurodegenerative diseases, and cardiovascular diseases, in which angiogenesis - the formation of new blood capillaries - is dysregulated. The Hippo signaling transducer, Yes-associated protein (YAP1) binds to the TEA domain (TEAD1) transcription factor and controls angiogenesis. YAP1 also regulates glucose metabolism through peroxisome proliferator-activated receptor gamma co-activator 1-alpha (PGC1α), a major player controlling mitochondrial biogenesis...
April 19, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29626541/use-the-protonmotive-force-mitochondrial-uncoupling-and-reactive-oxygen-species
#8
REVIEW
Brandon J Berry, Adam J Trewin, Andrea M Amitrano, Minsoo Kim, Andrew P Wojtovich
Mitochondrial respiration results in an electrochemical proton gradient, or protonmotive force (pmf), across the mitochondrial inner membrane. The pmf is a form of potential energy consisting of charge (∆ψm ) and chemical (∆pH) components, that together drive ATP production. In a process called uncoupling, proton leak into the mitochondrial matrix independent of ATP production dissipates the pmf and energy is lost as heat. Other events can directly dissipate the pmf independent of ATP production as well, such as chemical exposure or mechanisms involving regulated mitochondrial membrane electrolyte transport...
April 4, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29623826/targeting-ampk-in-diabetes-and-diabetic-complications-energy-homeostasis-autophagy-and-mitochondrial-health
#9
Y V Madhavi, Nikhil Gaikwad, Veera Ganesh Yerra, Anil Kumar Kalvala, Srinivas Nanduri, Ashutosh Kumar
Adenosine 5'-monophosphate activated protein kinase (AMPK) is a key enzymatic protein involved in linking the energy sensing to the metabolic manipulation. It is a serine/threonine kinase activated by several upstream kinases. AMPK is a heterotrimeric protein complex regulated by AMP, ADP, and ATP allosterically. AMPK is ubiquitously expressed in various tissues of the living system such as heart, kidney, liver, brain and skeletal muscles. Thus malfunctioning of AMPK is expected to harbor several human pathologies especially diseases associated with metabolic and mitochondrial dysfunction...
April 6, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29615920/redox-aspects-of-chaperones-in-cardiac-function
#10
REVIEW
Claudia Penna, Matteo Sorge, Saveria Femminò, Pasquale Pagliaro, Mara Brancaccio
Molecular chaperones are stress proteins that allow the correct folding or unfolding as well as the assembly or disassembly of macromolecular cellular components. Changes in expression and post-translational modifications of chaperones have been linked to a number of age- and stress-related diseases including cancer, neurodegeneration, and cardiovascular diseases. Redox sensible post-translational modifications, such as S-nitrosylation, glutathionylation and phosphorylation of chaperone proteins have been reported...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29593955/polymer-functionalization-of-isolated-mitochondria-for-cellular-transplantation-and-metabolic-phenotype-alteration
#11
Suhong Wu, Aijun Zhang, Shumin Li, Somik Chatterjee, Ruogu Qi, Victor Segura-Ibarra, Mauro Ferrari, Anisha Gupte, Elvin Blanco, Dale J Hamilton
Aberrant mitochondrial energy transfer underlies prevalent chronic health conditions, including cancer, cardiovascular, and neurodegenerative diseases. Mitochondrial transplantation represents an innovative strategy aimed at restoring favorable metabolic phenotypes in cells with dysfunctional energy metabolism. While promising, significant barriers to in vivo translation of this approach abound, including limited cellular uptake and recognition of mitochondria as foreign. The objective is to functionalize isolated mitochondria with a biocompatible polymer to enhance cellular transplantation and eventual in vivo applications...
March 2018: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/29581312/-s-nitrosylation-drives-cell-senescence-and-aging-in-mammals-by-controlling-mitochondrial-dynamics-and-mitophagy
#12
Salvatore Rizza, Simone Cardaci, Costanza Montagna, Giuseppina Di Giacomo, Daniela De Zio, Matteo Bordi, Emiliano Maiani, Silvia Campello, Antonella Borreca, Annibale A Puca, Jonathan S Stamler, Francesco Cecconi, Giuseppe Filomeni
S -nitrosylation, a prototypic redox-based posttranslational modification, is frequently dysregulated in disease. S -nitrosoglutathione reductase (GSNOR) regulates protein S -nitrosylation by functioning as a protein denitrosylase. Deficiency of GSNOR results in tumorigenesis and disrupts cellular homeostasis broadly, including metabolic, cardiovascular, and immune function. Here, we demonstrate that GSNOR expression decreases in primary cells undergoing senescence, as well as in mice and humans during their life span...
March 26, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29570349/a-microrna-s-journey-to-the-center-of-the-mitochondria
#13
Anne M Macgregor-Das, Samarjit Das
microRNAs (miRNA) are known as the master regulators of gene expression, and for the last two decades our knowledge of their functional reach keeps expanding. Recent studies have shown that a miRNA's role in regulation extends to extracellular and intracellular organelles. Several studies have shown a role for miRNA in regulating the mitochondrial genome in normal and disease conditions. Mitochondrial dysfunction occurs in many human pathologies, such as cardiovascular disease, diabetes, cancer, and neurological diseases...
March 23, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29536431/translational-application-of-measuring-mitochondrial-functions-in-blood-cells-obtained-from-patients-with-acute-poisoning
#14
David H Jang, Utsha G Khatri, Anita Mudan, Jennifer S Love, Shawn Owiredu, David M Eckmann
It is conservatively estimated that 5,000 deaths per year and 20,000 injuries in the USA are due to poisonings caused by chemical exposures (e.g., carbon monoxide, cyanide, hydrogen sulfide, phosphides) that are cellular inhibitors. These chemical agents result in mitochondrial inhibition resulting in cardiac arrest and/or shock. These cellular inhibitors have multi-organ effects, but cardiovascular collapse is the primary cause of death marked by hypotension, lactic acidosis, and cardiac arrest. The mitochondria play a central role in cellular metabolism where oxygen consumption through the electron transport system is tightly coupled to ATP production and regulated by metabolic demands...
March 13, 2018: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
https://www.readbyqxmd.com/read/29536164/alternative-splicing-isoforms-in-health-and-disease
#15
REVIEW
Hyoung Kyu Kim, Michael Huy Cuong Pham, Kyung Soo Ko, Byoung Doo Rhee, Jin Han
Alternative splicing (AS) of protein-coding messenger RNAs is an essential regulatory mechanism in eukaryotic gene expression that controls the proper function of proteins. It is also implicated in the physiological regulation of mitochondria and various ion channels. Considering that mis-splicing can result in various human diseases by modifying or abrogating important physiological protein functions, a fine-tuned balance of AS is essential for human health. Accumulated data highlight the importance of alternatively spliced isoforms in various diseases, including neurodegenerative disorders, cancer, immune and infectious diseases, cardiovascular diseases, and metabolic conditions...
March 13, 2018: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29513565/sodium-nitrate-supplementation-alters-mitochondrial-h-2-o-2-emission-but-does-not-improve-mitochondrial-oxidative-metabolism-in-the-heart-of-healthy-rats
#16
Cynthia M F Monaco, Paula M Miotto, Jason S Huber, Luc J C van Loon, Jeremy A Simpson, Graham P Holloway
Supplementation with dietary inorganic nitrate (NO3 - ) is increasingly recognized to confer cardioprotective effects in both healthy and clinical populations. While the mechanism(s) remain ambiguous, in skeletal muscle, the oral consumption of sodium nitrate has been shown to improve mitochondrial efficiency. Whether sodium nitrate has similar effects on mitochondria within the heart is unknown. Therefore, we comprehensively investigated the effect of sodium nitrate supplementation on in vivo left ventricular (LV) function and mitochondrial bioenergetics...
March 7, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29511917/the-role-of-mitochondria-in-cellular-toxicity-as-a-potential-drug-target
#17
EDITORIAL
Duojiao Wu, Xiangdong Wang, Hongzhi Sun
Mitochondrial malfunction is related to aging and to the onset of many diseases, such as obesity/diabetes, cancer, and cardiovascular and neurodegenerative diseases. The molecular principles of biological and toxicological processes the mitochondria can regulate should be disease-specific, cell type-specific, and drug targetable. Mitochondrial biology and toxicology is evolving and undergoing a revolution through fast-developing biotechnologies garnering increasing attention due to the importance of targeted therapies...
April 2018: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/29511093/mitochondrial-dna-as-an-inflammatory-mediator-in-cardiovascular-diseases
#18
REVIEW
Hiroyuki Nakayama, Kinya Otsu
Mitochondria play a central role in multiple cellular functions, including energy production, calcium homeostasis, and cell death. Currently, growing evidence indicates the vital roles of mitochondria in triggering and maintaining inflammation. Chronic inflammation without microbial infection - termed sterile inflammation - is strongly involved in the development of heart failure. Sterile inflammation is triggered by the activation of pattern recognition receptors (PRRs) that sense endogenous ligands called damage-associated molecular patterns (DAMPs)...
March 6, 2018: Biochemical Journal
https://www.readbyqxmd.com/read/29494535/trimethylamine-n-oxide-tmao-induced-impairment-of-cardiomyocyte-function-and-the-protective-role-of-urolithin-b-glucuronide
#19
Monia Savi, Leonardo Bocchi, Letizia Bresciani, Angela Falco, Federico Quaini, Pedro Mena, Furio Brighenti, Alan Crozier, Donatella Stilli, Daniele Del Rio
One of the most recently proposed candidates as a potential trigger for cardiovascular diseases is trimethylamine- N -oxide (TMAO). Possible direct effects of TMAO on myocardial tissue, independent of vascular damage, have been only partially explored so far. In the present study, we assessed the detrimental direct effects of TMAO on cardiomyocyte contractility and intracellular calcium dynamics, and the ability of urolithin B-glucuronide (Uro B-gluc) in counteracting TMAO-induced cell damage. Cell mechanics and calcium transients were measured, and ultrastructural analysis was performed in ventricular cardiomyocytes isolated from the heart of normal adult rats...
March 1, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29456246/mitochondrial-dysfunction-in-diabetic-kidney-disease
#20
REVIEW
Josephine M Forbes, David R Thorburn
Globally, diabetes is the leading cause of chronic kidney disease and end-stage renal disease, which are major risk factors for cardiovascular disease and death. Despite this burden, the factors that precipitate the development and progression of diabetic kidney disease (DKD) remain to be fully elucidated. Mitochondrial dysfunction is associated with kidney disease in nondiabetic contexts, and increasing evidence suggests that dysfunctional renal mitochondria are pathological mediators of DKD. These complex organelles have a broad range of functions, including the generation of ATP...
May 2018: Nature Reviews. Nephrology
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