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Microvascular Dysfunction

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https://www.readbyqxmd.com/read/28726778/protection-of-mcc950-against-high-glucose-induced-human-retinal-endothelial-cell-dysfunction
#1
Yi Zhang, Xuehua Lv, Zizhong Hu, Xiaojian Ye, Xinhua Zheng, Yuzhi Ding, Ping Xie, Qinghuai Liu
Diabetic retinopathy (DR) is a well-known microvascular complication related to inflammation. Mcc950 is a potent and specific inhibitor of the NLRP3 inflammasome but its influence on DR has not been studied. Thus, we evaluated the anti-inflammatory effects of Mcc950 on high-glucose-induced human retinal endothelial cells (HRECs) and the potential underlying mechanism. In surgical excised proliferative membranes from DR patients, high expression of NLRP3, caspase 1 and IL-1β was observed and co-localization of NLRP3 and IL-1β occurred in CD31+ labeled HRECs...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28724746/therapeutic-targeting-tumor-progression-locus-2-tpl2-activating-transcription-factor-4-atf4-chemokine-stromal-cell-derived-factor-%C3%AE-sdf1%C3%AE-axis-suppresses-diabetic-retinopathy
#2
De-Wei Lai, Keng-Hung Lin, Wayne Huey-Herng Sheu, Maw-Rong Lee, Chung-Yu Chen, Wen-Jane Lee, Yi-Wen Hung, Chin-Chang Shen, Tsung-Ju Chung, Shing-Hwa Liu, Meei-Ling Sheu
Rationale: Diabetic retinopathy is characterized by vasopermeability, vascular leakage, inflammation, blood-retinal barrier breakdown, capillary degeneration and neovascularization. However, the mechanisms underlying the association between diabetes and progression retinopathy remain unclear. Objective: Tumor progression locus 2 (TPL2), a serine-threonine protein kinase, exerts a pathological effect on vascular angiogenesis. This study investigated the role of N(ε)-(carboxymethyl)lysine (CML), a major advanced glycation end products, and the involved TPL2-related molecular signals in diabetic retinopathy using models of in vitro and in vivo and human samples...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28720207/thrombotic-microangiopathy-a-multidisciplinary-team%C3%A2-approach
#3
Craig E Gordon, Vipul C Chitalia, J Mark Sloan, David J Salant, David L Coleman, Karen Quillen, Katya Ravid, Jean M Francis
Thrombotic microangiopathy (TMA) is characterized by the presence of microangiopathic hemolytic anemia and thrombocytopenia along with organ dysfunction, and pathologically, by the presence of microthrombi in multiple microvascular beds. Delays in diagnosis and initiation of therapy are common due to the low incidence, variable presentation, and poor awareness of these diseases, underscoring the need for interdisciplinary approaches to clinical care for TMA. We describe a new approach to improve clinical management via a TMA team that originally stemmed from an Affinity Research Collaborative team focused on thrombosis and hemostasis...
July 15, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28713160/pathogenic-roles-of-microvesicles-in-diabetic-retinopathy
#4
REVIEW
Wei Zhang, Song Chen, Ming-Lin Liu
Diabetic retinopathy (DR) is a common complication of diabetes and has been recognized as the leading cause of blindness in adults. Several interrelated molecular pathways are involved in the development of DR. Microvesicles (MVs) are cell membrane vesicles, which carry many biologic molecules, such as mRNAs, microRNAs, transcription factors, membrane lipids, membrane receptors, and other proteins. They may be involved in intercellular communication that can promote inflammation, angiogenesis, and coagulation...
July 17, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28709982/impact-of-zinc-oxide-nanoparticles-on-an-in-vitro-model-of-the-human-air-blood-barrier
#5
Rossella Bengalli, Maurizio Gualtieri, Laura Capasso, Chiara Urani, Marina Camatini
The inhalation of zinc oxide nanoparticles (nZnO) may induce systemic diseases, damages to the alveolar epithelium and inflammatory response to endothelial cells. In this work the use of an in vitro air-blood barrier (ABB) model provided a tool to elucidate the biological mechanisms underlying the potential effects of inhaled nanoparticles (NPs). The ABB model used is composed of a Transwell co-culture of a lung epithelial cell line (NCI-H441) and an immortalized pulmonary microvascular endothelial cell line (HPMEC-ST1...
July 11, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28706977/acute-rejection-after-kidney-transplantation-associates-with-circulating-micrornas-and-vascular-injury
#6
Roel Bijkerk, Barend W Florijn, Meriem Khairoun, Jacques M G J Duijs, Gurbey Ocak, Aiko P J de Vries, Alexander F Schaapherder, Marko J K Mallat, Johan W de Fijter, Ton J Rabelink, Anton Jan van Zonneveld, Marlies E J Reinders
BACKGROUND: Acute rejection (AR) of kidney transplants is associated with the loss of endothelial integrity, microvascular rarefaction and, ultimately, graft dysfunction. Circulating angiogenic microRNAs (miRNAs) may serve as markers for microvascular injury. Here, we investigated the short- and long-term effects of AR after kidney transplantation on systemic vascular injury and the associated circulating miRNA profile. METHODS: Systemic vascular injury was determined by measuring capillary tortuosity and density within the oral mucosa as well as by assessing circulating levels of angiopoietin-2/angiopoietin-1 ratio, vascular endothelial growth factor and soluble thrombomodulin...
July 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28704481/renal-auto-transplantation-promotes-cortical-microvascular-network-remodeling-in-a-preclinical-porcine-model
#7
Souleymane Maïga, Geraldine Allain, Thierry Hauet, Jerome Roumy, Edouard Baulier, Michel Scepi, Manuel Dierick, Luc Van Hoorebeke, Patrick Hannaert, Franck Guy, Frederic Favreau
The vascular network is a major target of ischemia-reperfusion, but has been poorly investigated in renal transplantation. The aim of this study was to characterize the remodeling of the renal vascular network that follows ischemia-reperfusion along with the most highly affected cortex section in a preclinical renal transplantation model. There were two experimental groups. The first was a grafted kidney group consisting of large white pigs for which the left kidney was harvested, cold flushed, preserved for 24 h in the University of Wisconsin's preservation solution, and then auto-transplanted (n = 5); the right kidney was removed to mimic the situation of human kidney transplantation...
2017: PloS One
https://www.readbyqxmd.com/read/28700893/coronary-microvascular-disease-as-an-early-culprit-in-the-pathophysiology-of-diabetes-and-metabolic-syndrome
#8
REVIEW
Hicham Labazi, Aaron J Trask
Metabolic syndrome (MetS) is a group of cardio-metabolic risk factors that includes obesity, insulin resistance, hypertension, and dyslipidemia; these are also a combination of independent coronary artery disease (CAD) risk factors. Alarmingly, the prevalence of MetS risk factors are increasing and a leading cause for mortality. In the vasculature, complications from MetS and type 2 diabetes (T2D) can be divided into microvascular (retinopathy and nephropathy) and macrovascular (cardiovascular diseases and erectile dysfunction)...
July 9, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28699071/microvascular-dysfunction-in-infiltrative-cardiomyopathies
#9
Ornella Rimoldi, Francesco Maranta
Infiltrative heart diseases are characterized by myocardial tissue alterations leading to mechanical dysfunction which in turn develops into bi-ventricular congestive heart failure. Also the coronary microvasculature undergoes significant remodeling and dysfunction. The effects of the unbalance of the mechanical cross-talk between cardiac muscle and vessels and of the impairment of vasodilatory function can be measured non-invasively by means of positron emission tomography and cardiac magnetic resonance.
July 11, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28696548/brain-microvascular-injury-and-white-matter-disease-provoked-by-diabetes-associated-hyperamylinemia
#10
Han Ly, Nirmal Verma, Fengen Wu, Miao Liu, Kathryn E Saatman, Peter T Nelson, John T Slevin, Larry B Goldstein, Geert Jan Biessels, Florin Despa
OBJECTIVES: The brain blood vessels of patients with type-2 diabetes and dementia have deposition of amylin, an amyloidogenic hormone co-secreted with insulin. It is not known whether vascular amylin deposition is a consequence or a trigger of vascular injury. We tested the hypothesis that the vascular amylin deposits cause endothelial dysfunction and microvascular injury and are modulated by the amylin transport in the brain via plasma apolipoproteins. METHODS: Rats overexpressing amyloidogenic (human) amylin in the pancreas (HIP rats) and amylin knockout (AKO) rats intravenously infused with aggregated amylin were used for in vivo phenotyping...
July 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28695336/experimentally-induced-intrauterine-growth-restriction-in-rabbits-leads-to-differential-remodelling-of-left-versus-right-ventricular-myocardial-microstructure
#11
Julia Schipke, Anna Gonzalez-Tendero, Lidia Cornejo, Alper Willführ, Bart Bijnens, Fatima Crispi, Christian Mühlfeld, Eduard Gratacós
Intrauterine growth restriction (IUGR) is associated with foetal cardiac remodelling and dysfunction together with increased risk of cardiovascular disease in adulthood. Experimental data concerning effects of IUGR on cardiomyocyte and microvascularization anatomy are inconsistent and it is unknown whether both ventricles are similarly susceptible to in utero undersupply. Foetal IUGR was induced in pregnant rabbits at 25 days of gestation by selective ligation of uteroplacental vessels. Foetal echocardiography showed systolic and diastolic dysfunction of both ventricles and body and heart weight were significantly reduced in response to IUGR...
July 10, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28691755/maybe-the-fountain-of-youth-was-actually-a-treadmill-role-of-exercise-in-reversing-microvascular-and-diastolic-dysfunction
#12
Jacob P DeBlois, Wesley K Lefferts
Cardiovascular disease (CVD) is a prominent health concern in the United States and around the world. In 2013 more than one-third of the U.S. population had some form of CVD (Mozaffarian et al. 2016). This article is protected by copyright. All rights reserved.
July 10, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28685679/clinical-approach-to-diabetic-cardiomiopathy-a-review-of-human-studies
#13
Roberto Tarquini, Laura Pala, Simona Brancati, Giulia Vannini, Salvatore De Cosmo, Gianluigi Mazzoccoli, Carlo Maria Rotella
BACKGROUND: Diabetic Cardiomiopathy (DC) has been defined as a distinct entity characterized by the presence of diastolic or systolic cardiac dysfunction in a diabetic patient in the absence of other causes for Cardiomiopathy, such as coronary artery disease (CAD), hypertension (HTN), or valvular heart disease. Diabetes affects every organ in the body and cardiovascular disease accounts for two-thirds of the mortality in the diabetic population. Diabetes-related heart disease occurs in the form of coronary artery disease (CAD), cardiac autonomic neuropathy or DC...
July 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28684629/genetic-deletion-of-nadph-oxidase-1-rescues-microvascular-function-in-mice-with-metabolic-disease
#14
Jennifer A Thompson, Sebastian Larion, James D Mintz, Eric J Belin de Chantemele, David J Fulton, David W Stepp
Rationale: Early vascular changes in metabolic disease that precipitate the development of cardiovascular complications are largely driven by reactive oxygen species (ROS) accumulation, yet the extent to which excess ROS derive from specific Nox isoforms remains ill-defined. Objective: Identify the role of Nox1 in the development of microvascular dysfunction in metabolic disease. Methods and Results: Four genotypes were generated by breeding Nox1 knock-out (KO) mice with db/db mice: lean (HdbWnox1); lean Nox1 KO (HdbKnox1); obese (KdbWnox1); obese KK (KdbKnox1)...
July 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28683825/diabetic-retinopathy-is-associated-with-diastolic-dysfunction-in-type-2-diabetic-patients-with-non-ischemic-dilated-cardiomyopathy
#15
Yoo-Ri Chung, Se-Jun Park, Ka Young Moon, Seoyoung Annie Choi, Hong-Seok Lim, Sung Wook Park, Jeong Hun Kim, Kihwang Lee
BACKGROUND: To investigate the association between diabetic retinopathy (DR) and myocardial dysfunction in patients with type 2 diabetes and dilated cardiomyopathy (dCMP). METHODS: Data were collected retrospectively from 89 patients with dCMP (46 with type 2 diabetes and 43 without diabetes) and no evidence of coronary artery disease. Echocardiographic parameters and laboratory data, including lipid profiles and fundus findings, were obtained from medical records...
July 6, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28683162/an-observational-study-of-microcirculation-in-dialysis-patients-and-kidney-transplant-recipients
#16
Yu Chang Yeh, Anne Chao, Chih-Yaun Lee, Chen-Tse Lee, Chi-Chuan Yeh, Chih-Min Liu, Meng-Kun Tsai
BACKGROUND: Microcirculatory dysfunction contributes to acute and chronic kidney diseases. To the best of our knowledge, no study has compared differences in microcirculation among healthy volunteers, dialysis patients, and kidney transplant recipients. MATERIALS AND METHODS: Sublingual microcirculation was examined using sidestream dark field imaging and was compared among 90 healthy volunteers, 40 dialysis patients, and 40 kidney transplant recipients. The gender effect on microcirculation and the correlations among the microcirculation parameters, age, body mass index, heart rate, and blood pressure were analyzed...
July 6, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28680733/unilateral-isolated-hypoglossal-nerve-palsy-due-to-pathologically-adherent-pica-fusiform-aneurysm-a-case-report
#17
Mike E Ekuma, Tetsuya Goto, Yoshiki Hanaoka, Kohei Kanaya, Tetsuyoshi Horiuchi, Kazuhiro Hongo, Samuel C Ohaegbulam
BACKGROUND: Isolated hypoglossal nerve palsy due to mechanical compression by a vascular lesion is rare. CASE DESCRIPTION: We report the case of a 72-year-old man who presented with a 4-year history of swallowing disturbance and subsequently progressively worsening left-sided tongue atrophy. He was referred to our department by a neurologist due a magnetic resonance imaging detected left vertebral artery compression of the medulla. Neurological examination was unremarkable except for left hypoglossal nerve dysfunction, which presented as left-sided atrophy and impaired movement of the tongue...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28674266/pilot-cohort-study-assessing-the-efficacy-of-endovascular-revascularization-in-the-restoration-of-peripheral-sensory-disturbance-in-patients-with-critical-limb-ischemia
#18
Kentaro Jujo, Katsumi Saito, Issei Ishida, Yuho Furuki, Eiji Shibahashi, Kensuke Shimazaki, Haruki Sekiguchi, Yuichiro Minami, Junichi Yamaguchi, Hiroshi Ogawa, Nobuhisa Hagiwara
BACKGROUND: Sensory disturbance (SD) is a common consequence of peripheral nerve damage associated with diabetes and severe ischemia. Progression of SD places patients at high risk for lower extremity ulcers and amputations. SD has been thought to be progressive and irreversible, and possibly caused by microvascular dysfunction. The aim of this study was to determine whether endovascular revascularization (EVR) induces quantifiable changes in SD in chronic critical limb ischemia (CLI) patients with neuropathy...
July 1, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28669047/melatonin-protected-cardiac-microvascular-endothelial-cells-against-oxidative-stress-injury-via-suppression-of-ip3r-ca-2-c-vdac-ca-2-m-axis-by-activation-of-mapk-erk-signaling-pathway
#19
Hang Zhu, Qinhua Jin, Yang Li, Qiang Ma, Jing Wang, Dandan Li, Hao Zhou, Yundai Chen
The cardiac microvascular reperfusion injury is characterized by the microvascular endothelial cells (CMECs) oxidative damage which is responsible for the progression of cardiac dysfunction. However, few strategies are available to reverse such pathologies. This study aimed to explore the mechanism by which oxidative stress induced CMECs death and the beneficial actions of melatonin on CMECs survival, with a special focused on IP3R-[Ca(2+)]c/VDAC-[Ca(2+)]m damage axis and the MAPK/ERK survival signaling. We found that oxidative stress induced by H2O2 significantly activated cAMP response element binding protein (CREB) that enhanced IP3R and VDAC transcription and expression, leading to [Ca(2+)]c and [Ca(2+)]m overload...
July 1, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28668140/clinical-features-diagnosis-and-management-of-patients-with-anderson-fabry-cardiomyopathy
#20
REVIEW
Haran Yogasundaram, Daniel Kim, Omar Oudit, Richard B Thompson, Frank Weidemann, Gavin Y Oudit
Anderson-Fabry disease (AFD) is an X-linked recessive, multisystem disease of lysosomal storage. A mutation in the gene encoding the hydrolase enzyme α-galactosidase A results in its deficiency, or complete absence of activity. Subsequent progressive intracellular accumulation of glycosphingolipids, predominantly globotriaosylceramide, in various tissues, results in progressive organ dysfunction and failure, most commonly affecting the kidneys, nervous system, skin, eyes, vascular endothelium, and the heart...
July 2017: Canadian Journal of Cardiology
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