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endothelial function type diabetes

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https://www.readbyqxmd.com/read/28642238/ager-deletion-enhances-ischemic-muscle-inflammation-neoangiogenesis-and-blood-flow-recovery-in-diabetic-mice
#1
Raquel Lopez Diez, Xiaoping Shen, Gurdip Daffu, Md Khursheed, Jiyuan Hu, Fei Song, Rosa Rosario, Yunlu Xu, Qing Li, Xiangmei Xi, Yu Shan Zou, Huilin Li, Ann Marie Schmidt, Shi Fang Yan
OBJECTIVE: Diabetic subjects are at higher risk of ischemic peripheral vascular disease. We tested the hypothesis that advanced glycation end products (AGEs) and their receptor (RAGE) block neoangiogenesis and blood flow recovery after hindlimb ischemia induced by femoral artery ligation through modulation of immune/inflammatory mechanisms. APPROACH AND RESULTS: Wild-type mice rendered diabetic with streptozotocin and subjected to unilateral femoral artery ligation displayed increased accumulation and expression of AGEs and RAGE in ischemic muscle...
June 22, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28641786/association-of-apolipoprotein-ciii-apoc-iii-endothelium-dependent-vasodilation-and-peripheral-neuropathy-in-a-multi-ethnic-population-with-type-2-diabetes
#2
Sharon Li Ting Pek, Chee Fang Sum, Lee Ying Yeoh, Simon Biing Ming Lee, Wern Ee Tang, Su Chi Lim, Subramaniam Tavintharan
BACKGROUND: Diabetic peripheral neuropathy (DPN) is a common complication of Type 2 diabetes (T2D). Apart from hyperglycemia, its pathogenesis is poorly understood. Apolipoprotein-CIII (apoC-III) associated with triglyceride metabolism, is a risk factor for cardiovascular disease. Its role in DPN is not well-established. We studied the associations of apoC-III, endothelial function and DPN. METHODS: In patients with T2D, anthropometric data, fasting blood, and urine were collected for biochemistry and urine albumin/creatinine measurements (uACR)...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28637396/modulation-of-mir29a-improves-impaired-post-ischemic-angiogenesis-in-hyperglycemia
#3
Lingdan Chen, Emmanuel Okeke, Dawit Ayalew, Danny Wang, Lyeba Shahid, Ayotunde O Dokun
Individuals with diabetes mellitus suffer from impaired angiogenesis and this contributes to poorer peripheral arterial disease outcomes. In experimental peripheral arterial disease, angiogenesis and perfusion recovery are impaired in mice with diabetes. We recently showed that a disintegrin and metalloproteinase domain-containing protein 12 (ADAM12) is upregulated in ischemic endothelial cells and plays a key role in post-ischemic angiogenesis and perfusion recovery following experimental peripheral arterial disease...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28635626/adiponectin-a-therapeutic-target-for-obesity-diabetes-and-endothelial-dysfunction
#4
REVIEW
Arunkumar E Achari, Sushil K Jain
Adiponectin is the most abundant peptide secreted by adipocytes, whose reduction plays a central role in obesity-related diseases, including insulin resistance/type 2 diabetes and cardiovascular disease. In addition to adipocytes, other cell types, such as skeletal and cardiac myocytes and endothelial cells, can also produce this adipocytokine. Adiponectin effects are mediated by adiponectin receptors, which occur as two isoforms (AdipoR1 and AdipoR2). Adiponectin has direct actions in liver, skeletal muscle, and the vasculature...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28621447/metformin-prevents-vascular-prostanoid-release-alterations-induced-by-a-high-fat-diet-in-rats
#5
H J Lee, S M Cantú, A S Donoso, M R Choi, H A Peredo, A M Puyó
Perivascular adipose tissue dysfunction induced by high-fat feeding leads to alterations in the modulation of inflammation, contractile activity of the vascular smooth muscle and endothelial function, all risk factors in the development of hypertension. Metformin, an activator of AMP-activated protein kinase (AMPK), is currently the first-line drug treatment for type 2 diabetes (T2DM) and metabolic syndrome. Besides its glucose-lowering effect, there is an interest in actions of this drug with potential relevance in cardiovascular diseases...
June 16, 2017: Autonomic & Autacoid Pharmacology
https://www.readbyqxmd.com/read/28620823/the-vegf-a-inhibitor-sflt-1-improves-renal-function-by-reducing-endothelial-activation-and-inflammation-in-a-mouse-model-of-type-1-diabetes
#6
Pascal Bus, Marion Scharpfenecker, Priscilla Van Der Wilk, Ron Wolterbeek, Jan A Bruijn, Hans J Baelde
AIMS/HYPOTHESIS: Animal models of diabetic nephropathy show increased levels of glomerular vascular endothelial growth factor (VEGF)-A, and several studies have shown that inhibiting VEGF-A in animal models of diabetes can prevent albuminuria and glomerular hypertrophy. However, in those studies, treatment was initiated before the onset of kidney damage. Therefore, the aim of this study was to investigate whether transfecting mice with the VEGF-A inhibitor sFlt-1 (encoding soluble fms-related tyrosine kinase 1) can reverse pre-existing kidney damage in a mouse model of type 1 diabetes...
June 15, 2017: Diabetologia
https://www.readbyqxmd.com/read/28618859/sitagliptin-attenuates-endothelial-dysfunction-of-zucker-diabetic-fatty-rats
#7
Huanyuan Wang, Yi Zhou, Zhiying Guo, Yu Dong, Jiahui Xu, Haixia Huang, Huirong Liu, Wen Wang
Although the contributions of sitagliptin to endothelial function in diabetes mellitus were previously reported, the potential mechanisms still remain undefined. Our research was intended to explore the underlying mechanisms of protective effects of sitagliptin treatment on endothelial dysfunction in Zucker diabetic fatty (ZDF) rats. Male lean nondiabetic Zucker rats were used as control and male obese ZDF rats were randomly divided into ZDF and ZDF + sitagliptin groups. The significant decrease in endothelium-dependent relaxation induced by acetylcholine was observed in mesenteric arteries and thoracic aorta rings of ZDF rats...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28615149/cardiovascular-and-metabolic-effects-of-metformin-in-patients-with-type-1-diabetes-removal-a-double-blind-randomised-placebo-controlled-trial
#8
John R Petrie, Nishi Chaturvedi, Ian Ford, Martijn C G J Brouwers, Nicola Greenlaw, Therese Tillin, Irene Hramiak, Alun D Hughes, Alicia J Jenkins, Barbara E K Klein, Ronald Klein, Teik C Ooi, Peter Rossing, Coen D A Stehouwer, Naveed Sattar, Helen M Colhoun
BACKGROUND: Metformin might reduce insulin requirement and improve glycaemia in patients with type 1 diabetes, but whether it has cardiovascular benefits is unknown. We aimed to investigate whether metformin treatment (added to titrated insulin therapy) reduced atherosclerosis, as measured by progression of common carotid artery intima-media thickness (cIMT), in adults with type 1 diabetes at increased risk for cardiovascular disease. METHODS: REMOVAL was a double-blind, placebo-controlled trial undertaken at 23 hospital diabetes clinics in five countries (Australia, Canada, Denmark, the Netherlands, and the UK)...
June 9, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/28608024/long-term-saxagliptin-treatment-improves-endothelial-function-but-not-pulse-wave-velocity-intima-media-thickness-in-type-2-diabetic-patients
#9
Raffaella Dell'Oro, Alessandro Maloberti, Francesco Nicoli, Paolo Villa, Pierluigi Gamba, Michele Bombelli, Giuseppe Mancia, Guido Grassi
INTRODUCTION: Pharmacological inhibition of dipeptidyl-peptidase-4 may represent a promising therapeutic approach for glucose control and vascular protection. No information is available on the effects of saxagliptin (S) on aortic pulse wave velocity, carotid intima-media thickness and flow-mediated dilation (FMD, brachial artery) in diabetes. AIM: We investigated the long-term effects of S, as add-on therapy to metformin, on the above mentioned variables. METHODS: In 16 patients with decompensated diabetes aortic pulse wave velocity, carotid intima-media thickness and FMD, office and 24-h ambulatory blood pressure, anthropometric, biochemical and metabolic parameters were measured at baseline and after 6 and 12 months of treatment...
June 12, 2017: High Blood Pressure & Cardiovascular Prevention: the Official Journal of the Italian Society of Hypertension
https://www.readbyqxmd.com/read/28607430/liraglutide-improves-liver-microvascular-dysfunction-in-cirrhosis-evidence-from-translational-studies
#10
Fernanda Cristina de Mesquita, Sergi Guixé-Muntet, Anabel Fernández-Iglesias, Raquel Maeso-Díaz, Sergi Vila, Diana Hide, Martí Ortega-Ribera, José Luís Rosa, Juan Carlos García-Pagán, Jaime Bosch, Jarbas Rodrigues de Oliveira, Jordi Gracia-Sancho
Hepatic stellate cells (HSC) play a key role in the development of chronic liver disease (CLD). Liraglutide, well-established in type 2 diabetes, showed anti-inflammatory and anti-oxidant properties. We evaluated the effects of liraglutide on HSC phenotype and hepatic microvascular function using diverse pre-clinical models of CLD. Human and rat HSC were in vitro treated with liraglutide, or vehicle, and their phenotype, viability and proliferation were evaluated. In addition, liraglutide or vehicle was administered to rats with CLD...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606749/cardiovascular-disease-in-systemic-lupus-erythematosus-a-comprehensive-update
#11
REVIEW
Mayra Giannelou, Clio P Mavragani
Heightened rates of both cardiovascular (CV) events and subclinical atherosclerosis, documented by imaging and vascular function techniques are well established in systemic lupus erythematosus (SLE). While traditional CV factors such as smoking, dyslipidemia, diabetes mellitus (DM), hypertension, central obesity and hyperhomocysteinemia have been reported to be prevalent in lupus patients, they do not fully explain the high rates of ischemic events so far reported, implying that other factors inherent to disease itself could account for the enhanced risk, including disease duration, activity and chronicity, psychosocial factors, medications, genetic variants and altered immunological mechanisms...
June 9, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28600126/chemokine-cc-motif-receptor-like-2-mrna-is-expressed-in-hepatic-stellate-cells-and-is-positively-associated-with-characteristics-of-non-alcoholic-steatohepatitis-in-mice-and-men
#12
Sebastian Zimny, Rebekka Pohl, Lisa Rein-Fischboeck, Elisabeth M Haberl, Sabrina Krautbauer, Thomas S Weiss, Christa Buechler
Chemokine (CC-motif) receptor-like 2 (CCRL2) is a decoy receptor and regulates the local responses of the chemokine chemerin. Recently our group has shown that the functional chemerin receptor, chemokine-like receptor 1 (CMKLR1), correlates with fibrosis and non-alcoholic steatohepatitis (NASH) score in males only. In our current study, we wanted to know whether CCRL2 shows similar correlations as CMKLR1. Therefore, we analyzed the hepatic expression of CCRL2 in murine NASH and in liver tissues obtained from 85 patients with non-alcoholic fatty liver disease (NAFLD) and 33 controls...
June 15, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28591820/proton-pump-inhibitors-nephropathy-and-cardiovascular-disease-in-type-2-diabetes-the-fremantle-diabetes-study
#13
Timothy M E Davis, Jocelyn Drinkwater, Wendy A Davis
Context: There is emerging evidence of a range of adverse effects of chronic proton pump inhibitor (PPI) therapy. Objective: To assess the impact of PPI use on albuminuria, renal function and cardiovascular disease (CVD) risk in type 2 diabetes. Design: Longitudinal observational study. Setting: Urban-dwelling community. Patients: Patients with type 2 diabetes from the longitudinal observational Fremantle Diabetes Study Phase II and on stable renin-angiotensin system blocking therapy were divided into those remaining untreated with a PPI (Group 1, n=686), on PPI therapy throughout (Group 2, n=174), and commencing (Group 3, n=109) or discontinuing regular PPI therapy (Group 4, n=67) during the two years between assessments...
June 7, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28584193/let-7-contributes-to-diabetic-retinopathy-but-represses-pathological-ocular-angiogenesis
#14
Qinbo Zhou, Robert J A Frost, Chastain Anderson, Fangkun Zhao, Jing Ma, Bo Yu, Shusheng Wang
The in vivo function of microRNAs (miRNAs or miRs) in diabetic retinopathy (DR) and age-related macular degeneration (AMD) remains unclear. Here we report that let-7 family members are expressed in retinal and choroidal endothelial cells (EC). In ECs, overexpression of let-7 by adenovirus represses EC proliferation, migration, and networking in vitro, while inhibition of the let-7 family with a locked nucleic acid (LNA)-anti-miR has the opposite effect. Mechanistically, silencing of the let-7 target gene HMGA2 mimics the phenotype of let-7 overexpression in ECs...
June 5, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28570978/inhibition-of-long-noncoding-rna-igf2as-promotes-angiogenesis-in-type-2-diabetes
#15
Zhuo Zhao, Bin Liu, Bo Li, Chunli Song, Hongying Diao, Ziyuan Guo, Zhibo Li, Jichang Zhang
BACKGROUND: In this study, the angiogenic effect of long noncoding RNA (lncRNA), insulin growth factor 2 antisense (IGF2AS) in type 2 diabetes was evaluated. METHODS: Between Wistar rat and Goto-Kakizaki (GK) rat, a genetic model of type 2 diabetes, mRNA expressions of IGF2AS and IGF2 in myocardial microvascular endothelial (mMVE) cells were compared by qRT-PCR. In GK mMVE cells, IGF2AS was inhibited by siRNA. Its effects on cell proliferation and invasion were evaluated by MTT and wound-healing assays...
May 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28567668/the-impact-of-acute-high-intensity-interval-exercise-on-biomarkers-of-cardiovascular-health-in-type-2-diabetes
#16
Monique E Francois, Jonathan P Little
PURPOSE: High-intensity interval training (HIIT) interventions improve cardiovascular health, yet the acute effects on circulating and functional biomarkers of cardiovascular function are unclear in individuals with type 2 diabetes (T2D). To explore this, we conducted two investigations to examine the acute response to HIIT in individuals with T2D. METHODS: Study 1 measured blood pressure, endothelial-dependent dilation, circulating measures of endothelial activation, and troponin T, 30 min and 2 h after HIIT (7 × 1-min intervals) in T2D (n = 8) and age-matched normoglycemic controls (CTL; n = 8)...
May 31, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28555373/blood-brain-barrier-injury-in-diabetes-unrecognized-effects-on-brain-and-cognition
#17
REVIEW
Marina Bogush, Nathan A Heldt, Yuri Persidsky
Diabetes mellitus (DM) is a disorder due to the inability properly to metabolize glucose associated with dysregulation of metabolic pathways of lipids and proteins resulting in structural and functional changes of various organ systems. DM has detrimental effects on the vasculature, resulting in the development of various cardiovascular diseases and stemming from microvascular injury. The blood brain barrier (BBB) is a highly specialized structure protecting the unique microenvironment of the brain. Endothelial cells, connected by junctional complexes and expressing numerous transporters, constitute the main cell type in the BBB...
May 29, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28554530/electrical-muscle-stimulation-induces-an-increase-of-vegfr2-on-circulating-hematopoietic-stem-cells-in-patients-with-diabetes
#18
Asa Hidmark, Ioannis Spanidis, Thomas H Fleming, Nadine Volk, Volker Eckstein, Jan B Groener, Stefan Kopf, Peter P Nawroth, Dimitrios Oikonomou
PURPOSE: External electric muscle stimulation (EMS) of the thigh muscles was found to reduce pain resulting from diabetic neuropathy (DN), a vascular complication of diabetes. This study investigated circulating hematopoietic stem cells (HSCs) after EMS treatment. Impaired function of HSCs and the subpopulation endothelial progenitor cells (EPCs), important for neovascularization and endothelial repair, has been associated with DN. METHODS: Twenty-four patients with painful DN were treated 3 times with EMS over a period of 1 week...
May 26, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28545072/effect-of-vitamin-d-on-endothelial-progenitor-cells-function
#19
Yoav Hammer, Alissa Soudry, Amos Levi, Yeela Talmor-Barkan, Dorit Leshem-Lev, Joel Singer, Ran Kornowski, Eli I Lev
BACKGROUND: Endothelial progenitor cells (EPCs) are a population of bone marrow-derived cells, which have an important role in the process of endothelialization and vascular repair following injury. Impairment of EPCs, which occurs in patients with diabetes, was shown to be related to endothelial dysfunction, coronary artery disease (CAD) and adverse clinical outcomes. Recent evidence has shown that calcitriol, the active hormone of vitamin D, has a favorable impact on the endothelium and cardiovascular system...
2017: PloS One
https://www.readbyqxmd.com/read/28544111/kallistatin-reduces-vascular-senescence-and-aging-by-regulating-microrna-34a-sirt1-pathway
#20
Youming Guo, Pengfei Li, Lin Gao, Jingmei Zhang, Zhirong Yang, Grant Bledsoe, Eugene Chang, Lee Chao, Julie Chao
Kallistatin, an endogenous protein, protects against vascular injury by inhibiting oxidative stress and inflammation in hypertensive rats and enhancing the mobility and function of endothelial progenitor cells (EPCs). We aimed to determine the role and mechanism of kallistatin in vascular senescence and aging using cultured EPCs, streptozotocin (STZ)-induced diabetic mice, and Caenorhabditis elegans (C. elegans). Human kallistatin significantly decreased TNF-α-induced cellular senescence in EPCs, as indicated by reduced senescence-associated β-galactosidase activity and plasminogen activator inhibitor-1 expression, and elevated telomerase activity...
May 24, 2017: Aging Cell
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