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Carnitine cardiovascular risk

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https://www.readbyqxmd.com/read/29696241/blood-pressure-and-metabolic-effects-of-acetyl-l-carnitine-in-type-2-diabetes-diabasi-randomized-controlled-trial
#1
Aneliya Parvanova, Matias Trillini, Manuel A Podestà, Ilian P Iliev, Carolina Aparicio, Annalisa Perna, Francesco Peraro, Nadia Rubis, Flavio Gaspari, Antonio Cannata, Silvia Ferrari, Antonio C Bossi, Roberto Trevisan, Sreejith Parameswaran, Jonathan S Chávez-Iñiguez, Fahrudin Masnic, Sidy Mohamed Seck, Teerayuth Jiamjariyaporn, Monica Cortinovis, Luca Perico, Kanishka Sharma, Giuseppe Remuzzi, Piero Ruggenenti, David G Warnock
Context: Acetyl-l-carnitine (ALC), a mitochondrial carrier involved in lipid oxidation and glucose metabolism, decreased systolic blood pressure (SBP), and ameliorated insulin sensitivity in hypertensive nondiabetic subjects at high cardiovascular risk. Objective: To assess the effects of ALC on SBP and glycemic and lipid control in patients with hypertension, type 2 diabetes mellitus (T2D), and dyslipidemia on background statin therapy. Design: After 4-week run-in period and stratification according to previous statin therapy, patients were randomized to 6-month, double-blind treatment with ALC or placebo added-on simvastatin...
May 1, 2018: Journal of the Endocrine Society
https://www.readbyqxmd.com/read/29668463/changes-to-trimethylamine-n-oxide-and-its-precursors-in-nascent-metabolic-syndrome
#2
Daniella Lent-Schochet, Ryan Silva, Matthew McLaughlin, Beverley Huet, Ishwarlal Jialal
Background Metabolic syndrome (MetS), a cardio-metabolic cluster afflicting 35% of American adults, increases cardiovascular disease (CVD) and type-2 diabetes (T2DM) risk. Increased levels of trimethylamine N-oxide (TMAO), a metabolite derived from choline and L-carnitine, correlates with CVD and T2DM. However, the precise role of TMAO and its precursors in MetS remains unclear. We tested the hypothesis that choline, L-carnitine and TMAO in MetS patients without CVD or T2DM would be altered and correlate with inflammatory markers...
April 18, 2018: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/29518608/rip3-deficience-attenuates-potassium-oxonate-induced-hyperuricemia-and-kidney-injury
#3
Kang Wang, Lei Hu, Jian-Kang Chen
Recent preclinical and clinical evidence suggests that hyperuricemia (HU) is an independent risk factor for metabolic syndrome, hypertension, cardiovascular disease and chronic kidney disease. Receptor-interacting protein 3 (RIP3) is an important contributor in inducing programmed necrosis, representing a newly identified mechanism of cell death combining features of both apoptosis and necrosis. In our study, RIP3 was strongly expressed in mice with hyperuricemia. RIP3 deficiency attenuated hyperuricemia in mice, evidenced by reduced serum uric acid and creatinine and enhanced urinary uric acid and creatinine, as well as the improved histological alterations in renal sections...
May 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29506183/characterization-of-metabolic-responses-to-healthy-diets-and-association-with-blood-pressure-application-to-the-optimal-macronutrient-intake-trial-for-heart-health-omniheart-a-randomized-controlled-study
#4
Ruey Leng Loo, Xin Zou, Lawrence J Appel, Jeremy K Nicholson, Elaine Holmes
Background: Interindividual variation in the response to diet is common, but the underlying mechanism for such variation is unclear. Objective: The objective of this study was to use a metabolic profiling approach to identify a panel of urinary metabolites representing individuals demonstrating typical (homogeneous) metabolic responses to healthy diets, and subsequently to define the association of these metabolites with improvement of risk factors for cardiovascular diseases (CVDs)...
March 1, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29422939/associations-between-fatty-acid-oxidation-hepatic-mitochondrial-function-and-plasma-acylcarnitine-levels-in-mice
#5
Bodil Bjørndal, Eva Katrine Alterås, Carine Lindquist, Asbjørn Svardal, Jon Skorve, Rolf K Berge
Background: The 4-thia fatty acid tetradecylthiopropionic acid (TTP) is known to inhibit mitochondrial β-oxidation, and can be used as chemically induced hepatic steatosis-model in rodents, while 3-thia fatty acid tetradecylthioacetic acid (TTA) stimulates fatty acid oxidation through activation of peroxisome proliferator activated receptor alpha (PPARα). We wished to determine how these two compounds affected in vivo respiration and mitochondrial efficiency, with an additional goal to elucidate whether mitochondrial function is reflected in plasma acylcarnitine levels...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29359025/cardiac-autonomic-neuropathy-risk-factors-diagnosis-and-treatment
#6
REVIEW
Victoria A Serhiyenko, Alexandr A Serhiyenko
Cardiac autonomic neuropathy (CAN) is a serious complication of diabetes mellitus (DM) that is strongly associated with approximately five-fold increased risk of cardiovascular mortality. CAN manifests in a spectrum of things, ranging from resting tachycardia and fixed heart rate (HR) to development of "silent" myocardial infarction. Clinical correlates or risk markers for CAN are age, DM duration, glycemic control, hypertension, and dyslipidemia (DLP), development of other microvascular complications...
January 15, 2018: World Journal of Diabetes
https://www.readbyqxmd.com/read/29241711/l-carnitine-and-heart-disease
#7
REVIEW
Zhong-Yu Wang, Ying-Yi Liu, Guo-Hui Liu, Hai-Bin Lu, Cui-Ying Mao
Cardiovascular disease (CVD) is a key cause of deaths worldwide, comprising 15-17% of healthcare expenditure in developed countries. Current records estimate an annual global average of 30 million cardiac dysfunction cases, with a predicted escalation by two-three folds for the next 20-30years. Although β-blockers and angiotensin-converting-enzymes are commonly prescribed to control CVD risk, hepatotoxicity and hematological changes are frequent adverse events associated with these drugs. Search for alternatives identified endogenous cofactor l-carnitine, which is capable of promoting mitochondrial β-oxidation towards a balanced cardiac energy metabolism...
February 1, 2018: Life Sciences
https://www.readbyqxmd.com/read/29204172/protective-effects-of-coenzyme-q-10-and-l-carnitine-against-statin-induced-pancreatic-mitochondrial-toxicity-in-rats
#8
Melina Sadighara, Jalal Pourahamad Joktaji, Valiollah Hajhashemi, Mohsen Minaiyan
Statins are widely used in patients with hyperlipidemia and whom with high risk of cardiovascular diseases. Unfortunately, statins also exert some adverse effects on the liver and pancreas and enhance the risk of type 2 diabetes mellitus. The objective of the present research was to investigate the protective effects of coenzyme Q10 (Co-Q10 ) and L-carnitine (LC) on statins induced toxicity on pancreatic mitochondria in vivo . Seven groups of male Wistar rats received atorvastatin (20 mg/kg, p.o.), atorvastatin + Co-Q10 (10 mg/kg, i...
December 2017: Research in Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29131297/gut-bacteria-derived-molecules-as-mediators-and-markers-in-cardiovascular-diseases-the-role-of-the-gut-blood-barrier
#9
Artur Nowiński, Marcin Ufnal
No abstract text is available yet for this article.
2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29094215/insulin-resistance-and-glycine-metabolism-in-humans
#10
REVIEW
M Adeva-Andany, G Souto-Adeva, E Ameneiros-Rodríguez, C Fernández-Fernández, C Donapetry-García, A Domínguez-Montero
Plasma glycine level is low in patients with obesity or diabetes and the improvement of insulin resistance increases plasma glycine concentration. In prospective studies, hypoglycinemia at baseline predicts the risk of developing type 2 diabetes and higher serum glycine level is associated with decreased risk of incident type 2 diabetes. Consistently, plasma glycine concentration is lower in the lean offspring of parents with type 2 diabetes compared to healthy subjects. Among patients with type 2 diabetes, hypoglycinemia occurs before clinical manifestations of the disease, but the pathophysiological mechanisms underlying glycine deficit and its potential clinical repercussions are unclear...
January 2018: Amino Acids
https://www.readbyqxmd.com/read/28872093/-research-progress-of-trimethylamine-n-oxide-in-the-pathogenesis-of-atherosclerosis
#11
Huahua He, Xinfu Lian, Zhiqun Tang
Trimethylamine-N-oxide (TMAO), metabolites of the intestinal microflora, is a newly discovered risk factor for cardiovascular disease. The intestinal flora converted choline and L-carnitine into trimethylamine in the food. Trimethylamine is oxidized to TMAO in liver enzymes. Lowering TMA can stimulate macrophages to reverse cholesterol transport and inhibit atherogenesis. TMAO poietin-monooxygenase 3 (FMO3) is a tool for cholesterol metabolism and reverse cholesterol transpor, lowering FMO3 can slow the gallbladder's secretion of bile, delay intestinal absorption of cholesterol, and limit the synthesis of oxidized cholesterol and cholesterol esters...
August 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28745401/trimethylamine-n-oxide-breathe-new-life
#12
REVIEW
Saravanan Subramaniam, Craig Fletcher
Association between elevated levels of systemic trimethylamine N-oxide (TMAO) and increased risk for adverse cardiovascular events have been proposed in recent years. Increasing experimental and clinical evidence in the last decade has implicated TMAO as an important contributor to the pathogenesis of cardiovascular diseases. TMAO, the oxygenated product of trimethylamine (TMA), belongs to the class of amine oxides. Most of the TMA derived from the metabolism of choline and L-carnitine by gut bacteria is absorbed into the bloodstream and gets rapidly oxidized to TMAO by the hepatic enzyme, flavin-containing monooxgenase-3...
July 26, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28663251/gut-microbiota-metabolites-and-risk-of-major-adverse-cardiovascular-disease-events-and-death-a-systematic-review-and-meta-analysis-of-prospective-studies
#13
REVIEW
Yoriko Heianza, Wenjie Ma, JoAnn E Manson, Kathryn M Rexrode, Lu Qi
BACKGROUND: Gut microbial metabolites have been implicated as novel risk factors for cardiovascular events and premature death. The strength and consistency of associations between blood concentrations of the gut microbial metabolites, trimethylamine-N-oxide (TMAO) and its precursors, with major adverse cardiovascular events (MACE) or death have not been comprehensively assessed. We quantified associations of blood concentrations of TMAO and its precursors with risks of MACE and mortality...
June 29, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28645263/microbiota-dependent-metabolite-and-cardiovascular-disease-marker-trimethylamine-n-oxide-tmao-is-associated-with-monocyte-activation-but-not-platelet-function-in-untreated-hiv-infection
#14
Judith M Haissman, Anna K Haugaard, Sisse R Ostrowski, Rolf K Berge, Johannes R Hov, Marius Trøseid, Susanne D Nielsen
BACKGROUND: HIV infection is associated with increased risk of cardiovascular disease beyond that explained by traditional risk factors. Altered gut microbiota, microbial translocation, and immune activation have been proposed as potential triggers. The microbiota-dependent metabolite trimethylamine-N-oxide (TMAO) predicts myocardial infarction (MI) in the general population and has recently been shown to induce platelet hyperreactivity. In the present study, we investigated if TMAO was associated with platelet function, microbial translocation, and immune activation in both untreated and combination anti-retroviral therapy (cART) HIV infection...
June 23, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28641532/trimethylamine-n-oxide-tmao-as-a-new-potential-therapeutic-target-for-insulin-resistance-and-cancer
#15
Jens Oellgaard, Signe Abitz Winther, Tobias Schmidt Hansen, Peter Rossing, Bernt Johan von Scholten
BACKGROUND: The intake of animal products in food has been associated with both the development of insulin resistance and gastrointestinal cancers (GIC). Through the digestion of animal protein and other constituents of animal products, the commensal bacteria in the gut (the gut microbiota) forms metabolites that can contribute to the development of both insulin resistance and cancer. Trimethylamine-N-Oxide (TMAO) is such a molecule and has recently drawn a lot of attention as it may be a risk factor for - and a link between - the gut microbiota and cardiovascular and renal disease...
June 21, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28624482/nmr-quantification-of-trimethylamine-n-oxide-in-human-serum-and-plasma-in-the-clinical-laboratory-setting
#16
Erwin Garcia, Justyna Wolak-Dinsmore, Zeneng Wang, Xinmin S Li, Dennis W Bennett, Margery A Connelly, James D Otvos, Stanley L Hazen, Elias J Jeyarajah
BACKGROUND AND OBJECTIVES: Trimethylamine-N-oxide (TMAO) produced by gut microbiota metabolism of dietary choline and carnitine has been shown to be associated with increased risk of cardiovascular disease (CVD) and to provide incremental clinical prognostic utility beyond traditional risk factors for assessing a patient's CVD risk. The aim of this study was to develop an automated nuclear magnetic resonance (NMR) spectroscopy assay for quantification of TMAO concentration in serum and plasma using a high-throughput NMR clinical analyzer...
November 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28498348/nutrients-turned-into-toxins-microbiota-modulation-of-nutrient-properties-in-chronic-kidney-disease
#17
REVIEW
Raul Fernandez-Prado, Raquel Esteras, Maria Vanessa Perez-Gomez, Carolina Gracia-Iguacel, Emilio Gonzalez-Parra, Ana B Sanz, Alberto Ortiz, Maria Dolores Sanchez-Niño
In chronic kidney disease (CKD), accumulation of uremic toxins is associated with an increased risk of death. Some uremic toxins are ingested with the diet, such as phosphate and star fruit-derived caramboxin. Others result from nutrient processing by gut microbiota, yielding precursors of uremic toxins or uremic toxins themselves. These nutrients include l-carnitine, choline/phosphatidylcholine, tryptophan and tyrosine, which are also sold over-the-counter as nutritional supplements. Physicians and patients alike should be aware that, in CKD patients, the use of these supplements may lead to potentially toxic effects...
May 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28469156/impaired-renal-function-and-dysbiosis-of-gut-microbiota-contribute-to-increased-trimethylamine-n-oxide-in-chronic-kidney-disease-patients
#18
Kai-Yu Xu, Geng-Hong Xia, Jun-Qi Lu, Mu-Xuan Chen, Xin Zhen, Shan Wang, Chao You, Jing Nie, Hong-Wei Zhou, Jia Yin
Chronic kidney disease (CKD) patients have an increased risk of cardiovascular diseases (CVDs). The present study aimed to investigate the gut microbiota and blood trimethylamine-N-oxide concentration (TMAO) in Chinese CKD patients and explore the underlying explanations through the animal experiment. The median plasma TMAO level was 30.33 μmol/L in the CKD patients, which was significantly higher than the 2.08 μmol/L concentration measured in the healthy controls. Next-generation sequence revealed obvious dysbiosis of the gut microbiome in CKD patients, with reduced bacterial diversity and biased community constitutions...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28161804/tryptophan-depletion-under-conditions-that-imitate-insulin-resistance-enhances-fatty-acid-oxidation-and-induces-endothelial-dysfunction-through-reactive-oxygen-species-dependent-and-independent-pathways
#19
Theodoros Eleftheriadis, Georgios Pissas, Maria Sounidaki, Georgia Antoniadi, Christos Rountas, Vassilios Liakopoulos, Loannis Stefanidis
In atherosclerosis-associated pathologic entities characterized by malnutrition and inflammation, L-tryptophan (TRP) levels are low. Insulin resistance is an independent cardiovascular risk factor and induces endothelial dysfunction by increasing fatty acid oxidation. It is also associated with inflammation and low TRP levels. Low TRP levels have been related to worse cardiovascular outcome. This study evaluated the effect of TRP depletion on endothelial dysfunction under conditions that imitate insulin resistance...
April 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28159823/serum-acylcarnitines-and-risk-of-cardiovascular-death-and-acute-myocardial-infarction-in-patients-with-stable-angina-pectoris
#20
MULTICENTER STUDY
Elin Strand, Eva R Pedersen, Gard F T Svingen, Thomas Olsen, Bodil Bjørndal, Therese Karlsson, Jutta Dierkes, Pål R Njølstad, Gunnar Mellgren, Grethe S Tell, Rolf K Berge, Asbjørn Svardal, Ottar Nygård
BACKGROUND: Excess levels of serum acylcarnitines, which are intermediate products in metabolism, have been observed in metabolic diseases such as type 2 diabetes mellitus. However, it is not known whether acylcarnitines may prospectively predict risk of cardiovascular death or acute myocardial infarction in patients with stable angina pectoris. METHODS AND RESULTS: This study included 4164 patients (median age, 62 years; 72% men). Baseline serum acetyl-, octanoyl-, palmitoyl-, propionyl-, and (iso)valerylcarnitine were measured using liquid chromatography/tandem mass spectrometry...
February 3, 2017: Journal of the American Heart Association
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