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https://www.readbyqxmd.com/read/28715444/pyrrolidine-dithiocarbamate-ameliorates-endothelial-dysfunction-in-thoracic-aorta-of-diabetic-rats-by-preserving-vascular-ddah-activity
#1
Chang-Wu Lu, Yuan Lin, Yan-Ping Lei, Lan Wang, Zhi-Min He, Yan Xiong
OBJECTIVE: Endothelial dysfunction plays a pivotal role in the development of diabetic cardiovascular complications. Accumulation of endogenous nitric oxide synthase (NOS) inhibitor asymmetric dimethylarginine (ADMA) and inhibition of dimethylarginine dimethylaminohydrolase (DDAH) activity have been involved in diabetic endothelial dysfunction. This study was to investigate the effect of pyrrolidine dithiocarbamate (PDTC) on impairment of endothelium-dependent vasodilatation in diabetic rats and its potential mechanism...
2017: PloS One
https://www.readbyqxmd.com/read/28715076/increased-plasma-asymmetric-dimethylarginine-level-is-associated-with-ascending-aorta-dilatation-a-case-control-study
#2
Muhammet Hulusi Satılmışoğlu, Vesile Örnek Diker, Ömer Taşbulak, Mustafa Diker, Ali Birand, Mehmet Kaya, Taner İyigün, Abdurrahman Eksik
BACKGROUND: Asymetric dimethyl arginin (ADMA) is an endogenous inhibitor of nitric oxide synthase. AIM: We aimed to determine plasma ADMA level in patients with ascending aorta dilatation in comparison to those without aorta dilatation and to evaluate the diagnostic, predictive and prognostic value of serum ADMA level for aorta dilatation. METHODS: This was a cross-sectional case-control study. One hundred-four consecutive patients (female/male, 35/69; mean age, 62...
July 17, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28710553/metabolism-and-distribution-of-pharmacological-homoarginine-in-plasma-and-main-organs-of-the-anesthetized-rat
#3
Duygu Naile Günes, Arslan Arinc Kayacelebi, Erik Hanff, Joel Lundgren, Björn Redfors, Dimitrios Tsikas
L-Homoarginine (hArg) and guanidinoacetate (GAA) are produced from L-arginine (Arg) by the catalytic action of arginine:glycine amidinotransferase. Guanidinoacetate methyltransferase methylates GAA on its non-guanidine N atom to produce creatine. Arg and hArg are converted by nitric oxide synthase (NOS) to nitric oxide (NO). NO is oxidized to nitrite and nitrate which circulate in the blood and are excreted in the urine. Asymmetric dimethylarginine (ADMA), an NOS inhibitor, is widely accepted to be exclusively produced after asymmetric N (G)-methylation of Arg residues in proteins and their regular proteolysis...
July 14, 2017: Amino Acids
https://www.readbyqxmd.com/read/28709458/markers-of-nitric-oxide-are-associated-with-sepsis-severity-an-observational-study
#4
Martin Sebastian Winkler, Stefan Kluge, Maximilian Holzmann, Eileen Moritz, Linda Robbe, Antonia Bauer, Corinne Zahrte, Marion Priefler, Edzard Schwedhelm, Rainer H Böger, Alwin E Goetz, Axel Nierhaus, Christian Zoellner
BACKGROUND: Nitric oxide (NO) regulates processes involved in sepsis progression, including vascular function and pathogen defense. Direct NO measurement in patients is unfeasible because of its short half-life. Surrogate markers for NO bioavailability are substrates of NO generating synthase (NOS): L-arginine (lArg) and homoarginine (hArg) together with the inhibitory competitive substrate asymmetric dimethylarginine (ADMA). In immune cells ADMA is cleaved by dimethylarginine-dimethylaminohydrolase-2 (DDAH2)...
July 15, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28706468/retinal-metabolic-events-in-preconditioning-light-stress-as-revealed-by-wide-spectrum-targeted-metabolomics
#5
Juan Manuel Chao de la Barca, Nuan-Ting Huang, Haihan Jiao, Lydie Tessier, Cédric Gadras, Gilles Simard, Riccardo Natoli, Guillaume Tcherkez, Pascal Reynier, Krisztina Valter
INTRODUCTION: Light is the primary stimulus for vision, but may also cause damage to the retina. Pre-exposing the retina to sub-lethal amount of light (or preconditioning) improves chances for retinal cells to survive acute damaging light stress. OBJECTIVES: This study aims at exploring the changes in retinal metabolome after mild light stress and identifying mechanisms that may be involved in preconditioning. METHODS: Retinas from 12 rats exposed to mild light stress (1000 lux × for 12 h) and 12 controls were collected one and seven days after light stress (LS)...
2017: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28697799/symmetric-and-asymmetric-dimethylarginine-as-risk-markers-of-cardiovascular-disease-all-cause-mortality-and-deterioration-in-kidney-function-in-persons-with-type-2-diabetes-and-microalbuminuria
#6
Emilie H Zobel, Bernt Johan von Scholten, Henrik Reinhard, Frederik Persson, Tom Teerlink, Tine W Hansen, Hans-Henrik Parving, Peter K Jacobsen, Peter Rossing
BACKGROUND: To evaluate symmetric dimethylarginine (SDMA) and asymmetric dimethylarginine (ADMA) as risk markers of cardiovascular disease, all-cause mortality and deterioration in renal function in a well characterised type 2 diabetic population with microalbuminuria and without symptoms of coronary artery disease. METHODS: 200 participants followed for 6.1 years. SDMA and ADMA were measured at baseline. Endpoints included (1) composite cardiovascular endpoint (n = 40); (2) all-cause mortality (n = 26); and (3) decline in eGFR of >30% (n = 42)...
July 11, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28697789/improvement-in-asymmetric-dimethylarginine-and-oxidative-stress-in-patients-with-limb-salvage-after-autologous-mononuclear-stem-cell-application-for-critical-limb-ischemia
#7
Juraj Madaric, Martina Valachovicova, Ludovit Paulis, Jana Pribojova, Renata Mateova, Katarina Sebekova, Luba Postulkova, Terezia Madaricova, Maria Bucova, Martin Mistrik, Ivan Vulev
BACKGROUND: Asymmetric dimethylarginine (ADMA), an endogenous inhibitor of nitric oxide synthase, acts as an inhibitor of angiogenesis and is associated with an increased risk of cardiovascular mortality. Administration of stem cells may affect endogenous mechanisms that regulate ADMA production and metabolism. The aim of the present study was to analyze ADMA concentration and changes in oxidative stress in patients with advanced critical limb ischemia (CLI) after bone marrow-derived mononuclear cell (BM-MNC) therapy...
July 12, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28691426/physical-activity-related-changes-in-adma-and-vwf-levels-in-patients-with-type-2-diabetes-a-preliminary-study
#8
Zanna Fiodorenko-Dumas, Ilias Dumas, Krzysztof Mastej, Rajmund Adamiec
BACKGROUND: The activity and the role of methylarginine in diabetic patients are subject to continuous research. The mechanism through which diabetes or insulin resistance increases asymmetric dimethylarginine (ADMA) serum levels is not fully understood.Studies indicate increased ADMA serum levels in patients with hypertension, hypercholesterolemia and hyperhomocysteinemia. OBJECTIVES: The aim of the study was to assess changes in the levels of ADMA and its derivatives related to the current disease process, as well as the levels of selected prothrombotic factors and their changes induced by physical activity...
June 27, 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28684763/the-prognostic-biomarker-l-homoarginine-is-a-substrate-of-the-cationic-amino-acid-transporters-cat1-cat2a-and-cat2b
#9
Anja Chafai, Martin F Fromm, Jörg König, Renke Maas
Low plasma concentration of L-homoarginine is an independent predictor of cardiovascular events and total mortality. Experimental data indicate that supplementation of L-homoarginine may have protective effects. We aimed to elucidate the mechanisms involved in the cellular uptake of L-homoarginine, which are little understood, so far. Using human embryonic kidney (HEK293) cell lines stably overexpressing the human cationic amino acid transporters CAT1 [solute carrier family 7 (SLC7A1)], CAT2A (SLC7A2A) or CAT2B (SLC7A2B) we assessed the transport kinetics of L-homoarginine and interactions with the CAT substrates L-arginine and asymmetric dimethylarginine (ADMA)...
July 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28683962/arginine-nitric-oxide-metabolites-and-cardiac-dysfunction-in-patients-with-breast-cancer
#10
Brian S Finkelman, Mary Putt, Teresa Wang, Le Wang, Hari Narayan, Susan Domchek, Angela DeMichele, Kevin Fox, Jennifer Matro, Payal Shah, Amy Clark, Angela Bradbury, Vivek Narayan, Joseph R Carver, W H Wilson Tang, Bonnie Ky
BACKGROUND: Oxidative/nitrosative stress and endothelial dysfunction are hypothesized to be central to cancer therapeutics-related cardiac dysfunction (CTRCD). However, the relationship between circulating arginine-nitric oxide (NO) metabolites and CTRCD remains unstudied. OBJECTIVES: This study sought to examine the relationship between arginine-NO metabolites and CTRCD in a prospective cohort of 170 breast cancer patients treated with doxorubicin with or without trastuzumab...
July 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28682891/influence-of-phenylketonuria-s-diet-on-dimethylated-arginines-and-methylation-cycle
#11
Fernando Andrade, Olalla López-Suárez, Marta Llarena, María L Couce, Luis Aldámiz-Echevarría
Phenylketonuria's (PKU) treatment based on low natural protein diet may affect homocysteine (Hcys) metabolic pathway. Hcys alteration may be related to the methylation of arginine to asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA), which both modify nitric oxide production. The aim of this work is to evaluate the status of Hcys formation methylation cycle and ADMA and SDMA levels in patients with PKU in order to establish a potential relationship.Forty-two early diagnosed PKU patients under dietary treatment and good adherence to their diets were enrolled in this cross-sectional study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28680344/adma-sdma-and-l-arginine-may-be-novel-targets-in-pharmacotherapy-for-complications-due-to-cardiopulmonary-bypass
#12
Aydın Kahraman, Emre Mutlu, Mustafa Aldağ
BACKGROUND: In this study, the effects of olmesartan therapy on asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA), L-arginine and inducible nitric oxide synthase (iNOS) levels were investigated in patients undergoing cardiopulmonary bypass. METHODS: Patients were randomly allocated to two groups, control and olmesartan. Olmesartan was administered 30 mg once a day beginning from preoperative day 5 to postoperative day 28 and on operation day...
January 2017: Journal of Medical Biochemistry
https://www.readbyqxmd.com/read/28680332/evaluation-of-inflammatory-cytokines-and-oxidative-stress-markers-in-prostate-cancer-patients-undergoing-curative-radiotherapy
#13
Phebe L Abdel-Messeih, Neveen M Nosseir, Osama H Bakhe
Prostate cancer is the second leading cause of cancer-related death in men. The present study was carried out to investigate the radiation response of serum cytokines and oxidative markers to find out if these novel biomarkers have significant applications regarding radiation outcome in prostate cancer patients. Significant elevations of prostatic specific antigen (PSA), asymmetric dimethyl arginine (ADMA) and nitric oxide (NO) were recorded in cancer prostate patients at the time of diagnosis compared to controls...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/28676103/pre-diagnostic-metabolite-concentrations-and-prostate-cancer-risk-in-1077-cases-and-1077-matched-controls-in-the-european-prospective-investigation-into-cancer-and-nutrition
#14
Julie A Schmidt, Georgina K Fensom, Sabina Rinaldi, Augustin Scalbert, Paul N Appleby, David Achaintre, Audrey Gicquiau, Marc J Gunter, Pietro Ferrari, Rudolf Kaaks, Tilman Kühn, Anna Floegel, Heiner Boeing, Antonia Trichopoulou, Pagona Lagiou, Eleutherios Anifantis, Claudia Agnoli, Domenico Palli, Morena Trevisan, Rosario Tumino, H Bas Bueno-de-Mesquita, Antonio Agudo, Nerea Larrañaga, Daniel Redondo-Sánchez, Aurelio Barricarte, José Maria Huerta, J Ramón Quirós, Nick Wareham, Kay-Tee Khaw, Aurora Perez-Cornago, Mattias Johansson, Amanda J Cross, Konstantinos K Tsilidis, Elio Riboli, Timothy J Key, Ruth C Travis
BACKGROUND: Little is known about how pre-diagnostic metabolites in blood relate to risk of prostate cancer. We aimed to investigate the prospective association between plasma metabolite concentrations and risk of prostate cancer overall, and by time to diagnosis and tumour characteristics, and risk of death from prostate cancer. METHODS: In a case-control study nested in the European Prospective Investigation into Cancer and Nutrition, pre-diagnostic plasma concentrations of 122 metabolites (including acylcarnitines, amino acids, biogenic amines, glycerophospholipids, hexose and sphingolipids) were measured using targeted mass spectrometry (AbsoluteIDQ p180 Kit) and compared between 1077 prostate cancer cases and 1077 matched controls...
July 5, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28673038/endothelial-nitric-oxide-pathways-in-the-pathophysiology-of-dengue-a-prospective-observational-study
#15
Sophie Yacoub, Phung Khanh Lam, Trieu Trung Huynh, Hong Hanh Nguyen Ho, Hoai Tam Dong Thi, Nguyen Thu Van, Le Thi Lien, Quyen Nguyen Than Ha, Duyen Huynh Thi Le, Juthathip Mongkolspaya, Abigail Culshaw, Tsin Wen Yeo, Heiman Wertheim, Cameron Simmons, Gavin Screaton, Bridget Wills
Background: Dengue can cause increased vascular permeability that may lead to hypovolemic shock. Endothelial dysfunction may underlie this; however the association of endothelial nitric oxide pathways with disease severity is unknown. Methods: We performed a prospective observational study in two Vietnamese hospitals, assessing patients presenting early (<72 hours fever) and patients hospitalized with warning signs or severe dengue. The reactive hyperaemic index (RHI), which measures endothelium-dependent vasodilation and is a surrogate marker of endothelial function and NO bioavailability was evaluated using peripheral artery tonometry (EndoPAT) and plasma levels of L-arginine, Arginase-1 and ADMA were measured at serial time-points...
June 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28656289/prmt1-expression-is-elevated-in-head-and-neck-cancer-and-inhibition-of-protein-arginine-methylation-by-adenosine-dialdehyde-or-prmt1-knockdown-downregulates-proliferation-and-migration-of-oral-cancer-cells
#16
Chun-Yi Chuang, Chien-Ping Chang, Yu-Jen Lee, Wei-Long Lin, Wen-Wei Chang, Jia-Sian Wu, Ya-Wen Cheng, Huei Lee, Chuan Li
Protein arginine methylation is a post-translational modification that has been implicated in signal transduction, gene transcription, DNA repair and RNA processing. Overexpression or deregulation of protein arginine methyltransferases (PRMTs) have been reported to be associated with various cancers but have not been studied in head and neck cancer (HNC). We investigated the involvement of the modification in HNC using oral cancer cell lines (SAS, OECM-1 and HSC-3) and an immortalized normal oral cells (S-G)...
June 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28641568/an-expanding-role-of-biomarkers-in-pulmonary-arterial-hypertension
#17
Mustafa Yildiz, Alparslan Sahin, Michael Behnes, İbrahim Akin
BACKGROUND: Pulmonary arterial hypertension (PAH), is a chronic disease which may cause or result from mulitple cardiopulmonary disorders. The disease has complex pathophysiological mechanisms and involves many systematic, cellular and molecular changes. Therefore, it is crutial to find out underlying mechanisms and detect biomarkers to achieve early and proper diagnosis, evaluate of disease severity, for follow-up and monitor response to treatment. Many biomarker for PAH have been investigated but yet no such biomarker has been found specific and easily accessible to use for the patients...
June 14, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28630670/universal-structure-motifs-in-biominerals-a-lesson-from-nature-for-the-efficient-design-of-bioinspired-functional-materials
#18
REVIEW
Joe Harris, Corinna F Böhm, Stephan E Wolf
Biominerals are typically indispensable structures for their host organism in which they serve varying functions, such as mechanical support and protection, mineral storage, detoxification site, or as a sensor or optical guide. In this perspective article, we highlight the occurrence of both structural diversity and uniformity within these biogenic ceramics. For the first time, we demonstrate that the universality-diversity paradigm, which was initially introduced for proteins by Buehler et al. (Cranford & Buehler 2012 Biomateriomics; Cranford et al...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28628220/importance-of-endothelial-dysfunction-biomarkers-in-patients-with-crimean-congo-hemorrhagic-fever
#19
Mustafa Arslan, Gürdal Yilmaz, Ahmet Mentese, Hülya Yilmaz, S Caner Karahan, Iftihar Koksal
BACKGROUND: The pathogenesis of the Crimean-Congo hemorrhagic fever (CCHF) and the cause of the hemorrhage are not yet fully understood. However, the endothelium plays a key role in the pathogenesis. The purpose of this study was to investigate endothelial dysfunction markers [asymmetrical dimethyl arginine(ADMA), endothelin 1(ET-1), thrombomodulin(TM), von Willebrand factor(vWf) and intercellular adhesion molecule(ICAM-1)] in serum in patients with CCHF and their associations with hemorrhage...
June 19, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28625041/energy-regulation-in-newly-diagnosed-tb-with-chronic-energy-deficiency-free-fatty-acids-and-rbp4
#20
Nurpudji A Taslim, Devintha Virani, Ni Ketut Sumartini, Karmila, Agussalim Bukhari, Aminuddin, Suryani As'ad, Raden Satriono, Haerani Rasyid, Irawaty Djaharuddin
BACKGROUND AND OBJECTIVES: Energy metabolism may be dysfunctionally integral between host and infective agent in active tuberculosis, mediated by adipocytokines and free fatty acids (FFA) as the products of triglyceride lipolysis in fat, blood or other tissues. Retinol Binding Protein 4 (RBP4) and asymmetric dimethylarginine (ADMA) are candidate adipocytokines. The possibility of a deleterious metabolic nexus in chronic energy deficiency (CED) (BMI <18.5 kg/m2) is explored. METHODS AND DESIGN: Newly diagnosed patients with tuberculosis (n=63) were selected using consecutive random sampling at a Centre for the Care and Treatment of Lung Diseases in Makassar, Indonesia...
June 2017: Asia Pacific Journal of Clinical Nutrition
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