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endothelial function type diabetes

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https://www.readbyqxmd.com/read/28915818/the-impact-of-cardiovascular-co-morbidities-and-duration-of-diabetes-on-the-association-between-microvascular-function-and-glycaemic-control
#1
F Casanova, D D Adingupu, F Adams, K M Gooding, H C Looker, K Aizawa, F Dove, S Elyas, J J F Belch, P E Gates, R C Littleford, M Gilchrist, H M Colhoun, A C Shore, F Khan, W D Strain
BACKGROUND: Good glycaemic control in type 2 diabetes (T2DM) protects the microcirculation. Current guidelines suggest glycaemic targets be relaxed in advanced diabetes. We explored whether disease duration or pre-existing macrovascular complications attenuated the association between hyperglycaemia and microvascular function. METHODS: 743 participants with T2DM (n = 222), cardiovascular disease (CVD = 183), both (n = 177) or neither (controls = 161) from two centres in the UK, underwent standard clinical measures and endothelial dependent (ACh) and independent (SNP) microvascular function assessment using laser Doppler imaging...
September 15, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28912956/cardiometabolic-effects-of-a-novel-sirt1-activator-srt2104-in-people-with-type-2-diabetes-mellitus
#2
Radzi M Noh, Sowmya Venkatasubramanian, Shruti Daga, Jeremy Langrish, Nicholas L Mills, Ninian N Lang, Ethan Hoffmann, Brian Waterhouse, David E Newby, Brian M Frier
BACKGROUND: The cardiometabolic effects of SRT2104, a novel SIRT1 activator, were investigated in people with type 2 diabetes mellitus (T2DM). METHODS: Fifteen adults with T2DM underwent a randomised, double-blind, placebo-controlled cross-over trial and received 28 days of oral SRT2104 (2.0 g/day) or placebo. Forearm vasodilatation (measured during intrabrachial bradykinin, acetylcholine and sodium nitroprusside infusions) as well as markers of glycaemic control, lipid profile, plasma fibrinolytic factors, and markers of platelet-monocyte activation, were measured at baseline and at the end of each treatment period...
2017: Open Heart
https://www.readbyqxmd.com/read/28900818/the-effects-of-chronic-aerobic-exercise-on-cardiovascular-risk-factors-in-persons-with-diabetes-mellitus
#3
REVIEW
Emily M Miele, Samuel A E Headley
PURPOSE OF REVIEW: Aerobic exercise training is a component of diabetes mellitus (DM) care guidelines due to its favorable effects on glycemic control and cardiovascular disease (CVD) risk factors. The purpose of this review is to outline the recent evidence regarding the clinical effects of chronic aerobic exercise on CVD risk factors in persons with DM and to compare the effects of varying intensities and types of exercise. RECENT FINDINGS: Among individuals with DM, all types of aerobic exercise training can impact positively on some traditional and non-traditional risk factors for CVD...
September 12, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28900540/treatment-of-diabetic-mice-with-the-sglt2-inhibitor-ta-1887-antagonizes-diabetic-cachexia-and-decreases-mortality
#4
Taichi Sugizaki, Shunshun Zhu, Ge Guo, Akiko Matsumoto, Jiabin Zhao, Motoyoshi Endo, Haruki Horiguchi, Jun Morinaga, Zhe Tian, Tsuyoshi Kadomatsu, Keishi Miyata, Hiroshi Itoh, Yuichi Oike
A favorable effect of an inhibitor of the sodium-glucose cotransporter 2 (SGLT2i) on mortality of diabetic patients was recently reported, although mechanisms underlying that effect remained unclear. Here, we examine SGLT2i effects on survival of diabetic mice and assess factors underlying these outcomes. To examine SGLT2i treatment effects in a model of severe diabetes, we fed genetically diabetic db/db mice a high-fat diet and then assessed outcomes including diabetic complications between SGLT2i TA-1887-treated and control mice...
2017: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/28894214/the-novel-compound-sul-121-preserves-endothelial-function-and-inhibits-progression-of-kidney-damage-in-type-2-diabetes-mellitus-in-mice
#5
S P H Lambooy, A Bidadkosh, D Nakladal, A van Buiten, R A T Girgis, A C van der Graaf, T J Wiedenmann, R A Koster, P Vogelaar, H Buikema, R H Henning, L E Deelman
Diabetic nephropathy is still a common complication of type 2 diabetes mellitus (T2DM) and improvement of endothelial dysfunction (ED) and inhibition of reactive oxygen species (ROS) are considered important targets for new therapies. Recently, we developed a new class of compounds (Sul compounds) which inhibit mitochondrial ROS production. Here, we tested the therapeutic effects of Sul-121 on ED and kidney damage in experimental T2DM. Diabetic db/db and lean mice were implanted with osmotic pumps delivering Sul-121 (2...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28892039/metabolites-of-flavonoid-compounds-preserve-indices-of-endothelial-cell-nitric-oxide-bioavailability-under-glucotoxic-conditions
#6
Y Qian, P V A Babu, J D Symons, T Jalili
We hypothesized that metabolites of dietary flavonoids attenuate impairments in nitric oxide (NO) bioavailability evoked by glucotoxic conditions mimicking Type 1 or 2 diabetes. To test this, human aortic endothelial cells were treated with either vehicle control, quercetin-3-O-glucoronide, piceatannol or 3-(3-hydroxyphenyl)propionoic acid for 24 h. These are metabolites of quercetin, resveratrol and proanthocyanidin, respectively. Next, cells were exposed to control (5 mM) or high (25 mM) glucose conditions for 48 h, followed by insulin treatment (100 nM, 10 min) to stimulate NO production...
September 11, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28887562/metformin-improves-endothelial-function-and-reduces-blood-pressure-in-diabetic-spontaneously-hypertensive-rats-independent-from-glycemia-control-comparison-to-vildagliptin
#7
Mahdi Hamidi Shishavan, Robert H Henning, Azuwerus van Buiten, Maaike Goris, Leo E Deelman, Hendrik Buikema
Metformin confers vascular benefits beyond glycemia control, possibly via pleiotropic effects on endothelial function. In type-1-diabetes-mellitus (T1DM-)patients metformin improved flow-mediated dilation but also increased prostaglandin(PG)-F2α, a known endothelial-contracting factor. To explain this paradoxical finding we hypothesized that metformin increased endothelial-vasodilator mediators (e.g. NO and EDHF) to an even larger extent. Spontaneously-hypertensive-rats (SHR) display impaired endothelium-dependent relaxation (EDR) involving contractile PGs...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28870731/chronic-neuregulin-1%C3%AE-treatment-mitigates-the-progression-of-post-myocardial-infarction-heart-failure-in-the-setting-of-type-1-diabetes-mellitus-by-suppressing-myocardial-apoptosis-fibrosis-and-key-oxidant-producing-enzymes
#8
Manisha Gupte, Hind Lal, Firdos Ahmad, Douglas B Sawyer, Michael F Hill
BACKGROUND: Type 1 diabetes mellitus (DM) patients surviving myocardial infarction (MI) have substantially higher cardiovascular morbidity and mortality compared to their non-diabetic counterparts owing to the more frequent development of subsequent heart failure (HF). Neuregulin (NRG)-1β is released from cardiac microvascular endothelial cells and acts as a paracrine factor via the ErbB family of tyrosine kinase receptors expressed in cardiac myocytes to regulate cardiac development and stress responses...
September 1, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28870455/pharmacological-evaluation-of-metformin-and-n-benzylbiguanide-a-novel-analogue-of-metformin-on-the-vasopressor-responses-to-adrenergic-system-stimulation-in-pithed-rats-with-fructose-induced-insulin-resistance
#9
Erika J Gutiérrez-Lara, Gabriel Navarrete-Vázquez, Araceli Sánchez-López, David Centurión
Metformin has been associated with cardioprotection, vasorelaxation and normalization of endothelial function during type 2 Diabetes Mellitus. However, few studies have analysed its effects on vascular adrenergic system. Our study has evaluated the vasopressor responses induced by sympathetic stimulation or by i.v. bolus injections of the agonists noradrenaline (α1/2), methoxamine (α1) and UK 14,304 (α2) in rats with fructose-induced insulin resistance chronically pretreated with either metformin or EGL-6M (N-benzylbiguanide), a novel analogue of metformin...
September 6, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28864708/does-supplementation-with-carnosine-improve-cardiometabolic-health-and-cognitive-function-in-patients-with-pre-diabetes-and-type-2-diabetes-study-protocol-for-a-randomised-double-blind-placebo-controlled-trial
#10
Estifanos Baye, Kirthi Menon, Maximilian Pj de Courten, Arul Earnest, James Cameron, Barbora de Courten
INTRODUCTION: Carnosine, an over-the-counter food supplement, has a promising potential for the prevention and treatment of chronic diseases such as type 2 diabetes (T2DM), cardiovascular and neurodegenerative diseases through its anti-inflammatory, antiglycation, antioxidative and chelating effects. We have previously shown that supplementation with carnosine preserves insulin sensitivity and secretion in non-diabetic overweight and obese individuals. The effect of carnosine on cardiometabolic risk and related cognitive outcomes in patients with pre-diabetes and T2DM has thus far not been studied...
September 1, 2017: BMJ Open
https://www.readbyqxmd.com/read/28859673/multiple-therapeutic-effect-of-endothelial-progenitor-cell-regulated-by-drugs-in-diabetes-and-diabetes-related-disorder
#11
REVIEW
Rashmi K Ambasta, Harleen Kohli, Pravir Kumar
BACKGROUND: Reduced levels of endothelial progenitor cells (EPCs) counts have been reported in diabetic mellitus (DM) patients and other diabetes-related disorder. EPCs are a circulating, bone marrow-derived cell population that appears to participate in vasculogenesis, angiogenesis and damage repair. These EPC may revert the damage caused in diabetic condition. We aim to identify several existing drugs and signaling molecule, which could alleviate or improve the diabetes condition via mobilizing and increasing EPC number as well as function...
August 31, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28858362/the-acute-effect-of-coffee-on-endothelial-function-and-glucose-metabolism-following-a-glucose-load-in-healthy-human-volunteers
#12
Evan A J Boon, Kevin D Croft, Sujata Shinde, Jonathan M Hodgson, Natalie C Ward
A diet rich in plant polyphenols has been suggested to reduce the incidence of cardiovascular disease and type 2 diabetes mellitus, in part, via improvements in endothelial function. Coffee is a rich source of phenolic compounds including the phenolic acid, chlorogenic acid (CGA). The aim of the study was to investigate the effect of coffee as a whole beverage on endothelial function, blood pressure and blood glucose concentration. Twelve healthy men and women were recruited to a randomised, placebo-controlled, cross-over study, with three treatments tested: (i) 18 g of ground caffeinated coffee containing 300 mg CGA in 200 mL of hot water, (ii) 18 g of decaffeinated coffee containing 287 mg CGA in 200 mL of hot water, and (iii) 200 mL of hot water (control)...
August 31, 2017: Food & Function
https://www.readbyqxmd.com/read/28838475/comparison-of-ticagrelor-versus-prasugrel-for-inflammation-vascular-function-and-circulating-endothelial-progenitor-cells-in-diabetic-patients-with-non-st-segment-elevation-acute-coronary-syndrome-requiring-coronary-stenting-a-prospective-randomized-crossover
#13
Han Saem Jeong, Soon Jun Hong, Sang-A Cho, Jong-Ho Kim, Jae Young Cho, Seung Hun Lee, Hyung Joon Joo, Jae Hyoung Park, Cheol Woong Yu, Do-Sun Lim
OBJECTIVES: This study compared adenosine-associated pleiotropic effects of the 2 P2Y12 receptor antagonists on vascular function, systemic inflammation, and circulating endothelial progenitor cells (EPCs). BACKGROUND: Both ticagrelor and prasugrel have potent antiplatelet effects. However, only ticagrelor inhibits cellular uptake of adenosine. METHODS: Using a randomized, crossover design with 10-week follow-up ticagrelor or prasugrel was administered to type 2 diabetic patients with non-ST-segment elevation acute coronary syndrome requiring stent implantation...
August 28, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28838042/the-role-of-infiltrating-immune-cells-in-dysfunctional-adipose-tissue
#14
Tomasz J Guzik, Dominik S Skiba, Rhian M Touyz, David G Harrison
Adipose tissue (AT) dysfunction, characterized by loss of its homeostatic functions, is a hallmark of non-communicable diseases. It is characterized by chronic low-grade inflammation and is observed in obesity, metabolic disorders such as insulin resistance and diabetes. While classically it has been identified by increased cytokine or chemokine expression, such as increased MCP-1, RANTES, IL-6, interferon (IFN) gamma or TNFα, mechanistically, immune cell infiltration is a prominent feature of the dysfunctional AT...
July 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28837146/adropin-deficiency-worsens-hfd-induced-metabolic-defects
#15
Shi Chen, Kai Zeng, Qi-Cai Liu, Zheng Guo, Sheng Zhang, Xiao-Rong Chen, Jian-Hua Lin, Jun-Ping Wen, Cheng-Fei Zhao, Xin-Hua Lin, Feng Gao
The limited efficacy of current treatment methods and increased type 2 diabetes mellitus (T2DM) incidence constitute an incentive for investigating how metabolic homeostasis is maintained, to improve treatment efficacy and identify novel treatment methods. We analyzed a three-generation family of Chinese origin with the common feature of T2DM attacks and fatty pancreas (FP), alongside 19 unrelated patients with FP and 58 cases with T2DM for genetic variations in Enho, serum adropin, and relative Treg amounts...
August 24, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28814745/suppression-of-grk2-expression-reduces-endothelial-dysfunction-by-restoring-glucose-homeostasis
#16
Kumiko Taguchi, Mari Hida, Mami Hasegawa, Haruka Narimatsu, Takayuki Matsumoto, Tsuneo Kobayashi
Despite the associations between diabetic complications and vascular endothelial dysfunction, a direct therapeutic method targeting endothelial dysfunction remains poorly characterized. We have previously shown that chemical inhibition of G-protein-coupled receptor kinase 2 (GRK2) slightly enhances insulin sensitivity and reduces endothelial dysfunction in type 2 diabetic mice. In this study, we identified GRK2 as a novel therapeutic target of diabetic endothelial dysfunction and investigated the effect on diabetic endothelial dysfunction through the systemic administration of GRK2 siRNA using a hydrodynamic-based procedure, resulting in suppression of increased GRK2 protein levels in the liver...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807051/mesenchymal-stromal-cells-ameliorate-oxidative-stress-induced-islet-endothelium-apoptosis-and-functional-impairment-via-wnt4-%C3%AE-catenin-signaling
#17
Lingshu Wang, Li Qing, He Liu, Na Liu, Jingting Qiao, Chen Cui, Tianyi He, Ruxing Zhao, Fuqiang Liu, Fei Yan, Chuan Wang, Kai Liang, Xinghong Guo, Ying H Shen, Xinguo Hou, Li Chen
BACKGROUND: Islet dysfunction and destruction are the common cause for both type 1 and type 2 diabetes mellitus (T2DM). The islets of Langerhans are highly vascularized miniorgans, and preserving the structural integrity and full function of the microvascular endothelium is vital for protecting the islets from the infiltration of immune cells and secondary inflammatory attack. Mesenchymal stromal cell (MSC)-based therapies have been proven to promote angiogenesis of the islets; however, the underlying mechanism for the protective role of MSCs in the islet endothelium is still vague...
August 14, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28790929/combined-interval-training-and-post-exercise-nutrition-in-type-2-diabetes-a-randomized-control-trial
#18
Monique E Francois, Cody Durrer, Kevin J Pistawka, Frank A Halperin, Courtney Chang, Jonathan P Little
Background: High-intensity interval training (HIIT) can improve several aspects of cardiometabolic health. Previous studies have suggested that adaptations to exercise training can be augmented with post-exercise milk or protein consumption, but whether this nutritional strategy can impact the cardiometabolic adaptations to HIIT in type 2 diabetes is unknown. Objective: To determine if the addition of a post-exercise milk or protein beverage to a high-intensity interval training (HIIT) intervention improves cardiometabolic health in individuals with type 2 diabetes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28781215/adipose-derived-stem-cell-derived-exosomes-ameliorate-erectile-dysfunction-in-a-rat-model-of-type-2-diabetes
#19
Fengzhi Chen, Haibo Zhang, Zhiqiang Wang, Wei Ding, Qinyu Zeng, Wenbing Liu, Can Huang, Shuhua He, Anyang Wei
BACKGROUND: The efficacy of adipose-derived stem cells (ADSCs) in alleviating erectile dysfunction (ED) of diabetic rats has been demonstrated mainly through a paracrine effect. However, exosomes (EXOs), which are important bioactive substance vectors secreted by ADSCs, have never been associated with ED. AIM: To investigate the effect of ADSC-derived EXOs on erectile function in a type 2 diabetic ED rat model. METHODS: EXOs were isolated from the supernatants of cultured ADSCs by ultracentrifugation...
August 3, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28774328/curcumin-induces-therapeutic-angiogenesis-in-a-diabetic-mouse-hindlimb-ischemia-model-via-modulating-the-function-of-endothelial-progenitor-cells
#20
Jinzhi You, Jiacheng Sun, Teng Ma, Ziying Yang, Xu Wang, Zhiwei Zhang, Jingjing Li, Longgang Wang, Masaaki Ii, Junjie Yang, Zhenya Shen
BACKGROUND: Neovascularization is impaired in diabetes mellitus, which leads to the development of peripheral arterial disease and is mainly attributed to the dysfunction of endothelial progenitor cells (EPCs). Previous studies proved the promotional effect of curcumin on neovascularization in wound healing of diabetes. Thus, we hypothesize that curcumin could promote neovascularization at sites of hindlimb ischemia in diabetes and might take effect via modulating the function of EPCs...
August 3, 2017: Stem Cell Research & Therapy
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