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Pathophysiology diabetic injury

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https://www.readbyqxmd.com/read/27896904/contrast-induced-encephalopathy-following-cardiac-catheterization
#1
Roberto Spina, Neil Simon, Romesh Markus, David Wm Muller, Krishna Kathir
OBJECTIVES: To describe the epidemiology, pathophysiology, clinical presentation, and management of contrast-induced encephalopathy (CIE) following cardiac catheterization. BACKGROUND: CIE is an acute, reversible neurological disturbance directly attributable to the intra-arterial administration of iodinated contrast medium. METHODS: The PubMed database was searched and all cases in the literature were retrieved and reviewed. RESULTS: 52 reports of CIE following cardiac catheterization were found...
November 29, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27889567/prognostic-value-of-plasma-apelin-concentrations-at-admission-in-patients-with-st-segment-elevation-acute-myocardial-infarction
#2
Jordi Sans-Roselló, Gregori Casals, Xavier Rosselló, Bernardino González de la Presa, Montserrat Vila, Albert Duran-Cambra, Manuel Morales-Ruiz, Andreu Ferrero-Gregori, Wladimiro Jiménez, Alessandro Sionis
BACKGROUND: The use of plasma biomarkers is relevant for the prognosis of ST-segment elevation myocardial infarction (STEMI) patients. Apelin, an adipocytokine, plays a pivotal role in the pathophysiology of both ischemia/reperfusion injury and its potential subsequent heart failure. We evaluated apelin concentrations at admission as a biomarker to assess risk of 6-month mortality. METHODS: Consecutive patients with STEMI were recruited from January 2012 to January 2013 (n=250)...
November 23, 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27883184/epigenetics-in-reactive-and-reparative-cardiac-fibrogenesis-the-promise-of-epigenetic-therapy
#3
REVIEW
Asish K Ghosh, Rahul Rai, Panagiotis Flevaris, Douglas E Vaughan
Epigenetic changes play a pivotal role in the development of a wide spectrum of human diseases including cardiovascular diseases, cancer, diabetes, and intellectual disabilities. Cardiac fibrogenesis is a common pathophysiological process seen during chronic and stress-induced accelerated cardiac aging. While adequate production of extracellular matrix (ECM) proteins is necessary for post-injury wound healing, excessive synthesis and accumulation of extracellular matrix protein in the stressed or injured hearts causes decreased or loss of lusitropy that leads to cardiac failure...
November 24, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27872031/penile-prosthesis-infections-a-review-of-risk-factors-prevention-and%C3%A2-treatment
#4
REVIEW
Miguel Pineda, Arthur L Burnett
INTRODUCTION: Inflatable penile prosthesis (IPP) surgery has been performed for more than 40 years. IPP infection rates have decreased owing to advances in manufacturing and surgical technique but have remained a devastating complication. AIMS: To describe the pathophysiology of infections, examine evidence associating clinical risk factors with IPP infection, assess the benefit of techniques aimed at preventing and managing infection, and discuss future directions...
October 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/27798458/the-angiotensin-type-2-receptor-and-the-kidney
#5
Antonio A B Peluso, Robson A S Santos, Thomas Unger, U Muscha Steckelings
PURPOSE OF REVIEW: Angiotensin II is a main regulator of kidney function. Renal actions mediated by the angiotensin AT1 receptor have been well known for many years. In contrast, several details of angiotensin AT2 receptor actions in kidney physiology and pathophysiology were only described very recently. These findings are reviewed in this article. RECENT FINDINGS: Regarding the role of the angiotensin AT2 receptor in kidney physiology, a major recent finding was that the AT2 receptor-mediated inhibition of Na-H exchanger-3 and Na/K-ATPase in the renal proximal tubules is caused by internalisation of these transporters, thus reducing reabsorption and increasing natriuresis/diuresis...
January 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27784010/clinical-application-of-biomarkers-in-heart-failure-with-a-preserved-ejection-fraction-a-review
#6
Aakash Garg, Deepti Virmani, Sahil Agrawal, Chirag Agarwal, Abhishek Sharma, Giulio Stefanini, John B Kostis
Heart failure with a preserved ejection fraction (HFpEF) is increasingly prevalent and a leading cause of morbidity and mortality worldwide. HFpEF has a complex pathophysiology, with recent evidence suggesting that an interaction of cardiovascular and noncardiovascular comorbidities (e.g. obesity, hypertension, diabetes, coronary artery disease, and chronic kidney disease) induces an inflammatory state that eventually leads to myocardial structural and functional alterations. Current ACCF/AHA guidelines suggest incorporation of biomarkers along with clinical and imaging tools to establish the diagnosis and disease severity in heart failure (HF)...
October 27, 2016: Cardiology
https://www.readbyqxmd.com/read/27783269/anion-channels-of-mitochondria
#7
Devasena Ponnalagu, Harpreet Singh
Mitochondria are the "power house" of a cell continuously generating ATP to ensure its proper functioning. The constant production of ATP via oxidative phosphorylation demands a large electrochemical force that drives protons across the highly selective and low-permeable mitochondrial inner membrane. Besides the conventional role of generating ATP, mitochondria also play an active role in calcium signaling, generation of reactive oxygen species (ROS), stress responses, and regulation of cell-death pathways...
October 26, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/27768755/in-vivo-evaluation-of-the-visual-pathway-in-streptozotocin-induced-diabetes-by-diffusion-tensor-mri-and-contrast-enhanced-mri
#8
Swarupa Kancherla, William J Kohler, Yolandi van der Merwe, Kevin C Chan
Visual function has been shown to deteriorate prior to the onset of retinopathy in some diabetic patients and experimental animal models. This suggests the involvement of the brain's visual system in the early stages of diabetes. In this study, we tested this hypothesis by examining the integrity of the visual pathway in a diabetic rat model using in vivo multi-modal magnetic resonance imaging (MRI). Ten-week-old Sprague-Dawley rats were divided into an experimental diabetic group by intraperitoneal injection of 65 mg/kg streptozotocin in 0...
2016: PloS One
https://www.readbyqxmd.com/read/27754096/os-21-01-nox1-or-nox4-deletion-prevents-type-1-diabetes-induced-endothelial-dysfunction
#9
Pierre Paradis, Sofiane Ouerd, Noureddine Idris-Khodja, Michelle Trindade, Suellen C Coelho, Karin A Jandeleit-Dahm, Ernesto L Schiffrin
OBJECTIVE: The prognosis of type-1 diabetes remains poor and is primarily related to the increased risk of vascular complications. Overproduction of reactive oxygen species by NADPH oxidase (NOX) is believed to play an important role in diabetes-related vascular injury. NOX1 may play a role in the macrovascular disease, whereas NOX4 may have protective actions. Nevertheless, their role in diabetic microangiopathy is less well understood. We hypothesized that deletion of Nox1 would prevent diabetes-induced endothelial dysfunction and vascular remodeling of small arteries whereas Nox4 would exaggerate vascular injury...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27753836/sy-05-2-progression-of-hypertensive-heart-disease-new-therapeutic-approach
#10
Masatsugu Horiuchi
Hypertensive patients have greater chances of such cardiovascular events as stroke, coronary heart disease, heart or renal failure, peripheral artery disease, and dementia. It is also well recognized that diabetes increases the cardiovascular risks in concert with hypertension. Therefore, main goals for an innovation of anti-hypertensive therapy would be to achieve further risk reduction by targeting the functional, metabolic, and structural alterations associated with hypertension. Professors Dzau and Braunwald et al proposed the concept of "the cardiovascular disease continuum" in 1991, and that hypertension may trigger the chain of events, leading to end-stage heart disease; however, this concept was quite new at that time, and there was some discussion whether "the cardiovascular disease continuum" is true or not...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27736813/longitudinal-changes-in-measured-glomerular-filtration-rate-renal-fibrosis-and-biomarkers-in-a-rat-model-of-type-2-diabetic-nephropathy
#11
Zhi Su, Deborah Widomski, Ji Ma, Marian Namovic, Arthur Nikkel, Laura Leys, Lauren Olson, Katherine Salte, Diana Donnelly-Roberts, Timothy Esbenshade, Steve McGaraughty
BACKGROUND: Obese ZSF-1 rats display many features of human type II diabetes including nephropathy (DN). The study aimed to further understand the relevance of this model to DN, for which glomerular filtration rate (GFR), renal fibrosis and several urinary/tissue biomarkers was followed over 24 weeks in ZSF-1 rats. METHODS: Intact/sham or uninephrectomized male and female ZSF-1 rats were studied. GFR was measured by transdermal clearance of fluorescein isothiocyanate-sinistrin...
October 14, 2016: American Journal of Nephrology
https://www.readbyqxmd.com/read/27707498/the-metabolic-stress-response-to-burn-trauma-current-understanding-and-therapies
#12
REVIEW
Craig Porter, Ronald G Tompkins, Celeste C Finnerty, Labros S Sidossis, Oscar E Suman, David N Herndon
Major burns provoke a profound stress response, which is unrivalled in terms of its magnitude and duration. Evidence suggests that the pathophysiological stress response to severe burn trauma persists for several years after injury. Thus, there is a pressing need for novel strategies that mitigate this response and restore normal metabolic function in patients with burns. This is the first in a Series of three papers about the care of people with burns. In this paper, we review the current knowledge of the stress response to burn trauma, with a focus on hypermetabolism, muscle wasting, and stress-induced diabetes...
October 1, 2016: Lancet
https://www.readbyqxmd.com/read/27681000/prognostic-implications-of-biomarker-assessments-in-patients-with-type-2-diabetes-at-high-cardiovascular-risk-a-secondary-analysis-of-a-randomized-clinical-trial
#13
Benjamin M Scirica, Deepak L Bhatt, Eugene Braunwald, Itamar Raz, Matthew A Cavender, KyungAh Im, Ofri Mosenzon, Jacob A Udell, Boaz Hirshberg, Pia S Pollack, Ph Gabriel Steg, Petr Jarolim, David A Morrow
Importance: Cardiac biomarkers provide insights into pathophysiologic processes and offer an attractive strategy for the assessment of cardiovascular risk. Objective: To assess the incremental prognostic value of biomarkers that reflect different pathophysiologic processes in patients with type 2 diabetes. Design, Setting, and Participants: The Saxagliptin Assessment of Vascular Outcomes Recorded in Patients with Diabetes Mellitus (SAVOR)-Thrombolysis in Myocardial Infarction (TIMI) 53 is a randomized, double-blind, placebo-controlled clinical trial that evaluated the safety of saxagliptin vs placebo in 16 492 outpatients with type 2 diabetes with overt cardiovascular disease (CVD) or multiple risk factors...
September 28, 2016: JAMA Cardiology
https://www.readbyqxmd.com/read/27666815/role-of-galectin-3-in-autoimmune-and-non-autoimmune-nephropathies
#14
Francesca Saccon, Mariele Gatto, Anna Ghirardello, Luca Iaccarino, Leonardo Punzi, Andrea Doria
Galectins are evolutionary conserved β-galactoside binding proteins with a carbohydrate-recognition domain (CRD) of approximately 130 amino acids. In mammals, 15 members of the galectin family have been identified and classified into three subtypes according to CRD organization: prototype, tandem repeat-type and chimera-type galectins. Galectin-3 (gal-3) is the only chimera type galectin in vertebrates containing one CRD linked to an unusual long N-terminal domain which displays non-lectin dependent activities...
September 23, 2016: Autoimmunity Reviews
https://www.readbyqxmd.com/read/27664706/perivascular-adipose-tissue-alleviates-inflammatory-factors-and-stenosis-in-diabetic-blood-vessels
#15
Tianjia Li, Xinnong Liu, Leng Ni, Zhanqi Wang, Wenda Wang, Tao Shi, Xiu Liu, Changwei Liu
Adipose tissue can modulate disease processes in a depot-specific manner. However, the functional properties of perivascular adipocytes, and their influence on the pathophysiology of blood vessel walls, remain to be determined. In this study, we aimed to investigate whether perivascular adipose tissue could have an ameliorative effect on blood vessels damaged in diabetes. Using in vitro coculture, and in vivo transplantation model simulating diabetic angioplasty-induced injury, we showed that perivascular adipose tissue has an important function in protecting blood vessels from high glucose impairment...
September 21, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27643021/os-21-01-nox1-or-nox4-deletion-prevents-type-1-diabetes-induced-endothelial-dysfunction
#16
Pierre Paradis, Sofiane Ouerd, Noureddine Idris-Khodja, Michelle Trindade, Suellen C Coelho, Karin A Jandeleit-Dahm, Ernesto L Schiffrin
OBJECTIVE: The prognosis of type-1 diabetes remains poor and is primarily related to the increased risk of vascular complications. Overproduction of reactive oxygen species by NADPH oxidase (NOX) is believed to play an important role in diabetes-related vascular injury. NOX1 may play a role in the macrovascular disease, whereas NOX4 may have protective actions. Nevertheless, their role in diabetic microangiopathy is less well understood. We hypothesized that deletion of Nox1 would prevent diabetes-induced endothelial dysfunction and vascular remodeling of small arteries whereas Nox4 would exaggerate vascular injury...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27642889/sy-05-2-progression-of-hypertensive-heart-disease-new-therapeutic-approach
#17
Masatsugu Horiuchi
Hypertensive patients have greater chances of such cardiovascular events as stroke, coronary heart disease, heart or renal failure, peripheral artery disease, and dementia. It is also well recognized that diabetes increases the cardiovascular risks in concert with hypertension. Therefore, main goals for an innovation of anti-hypertensive therapy would be to achieve further risk reduction by targeting the functional, metabolic, and structural alterations associated with hypertension. Professors Dzau and Braunwald et al proposed the concept of "the cardiovascular disease continuum" in 1991, and that hypertension may trigger the chain of events, leading to end-stage heart disease; however, this concept was quite new at that time, and there was some discussion whether "the cardiovascular disease continuum" is true or not...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27633396/silencing-of-histone-deacetylase-9-expression-in-podocytes-attenuates-kidney-injury-in-diabetic-nephropathy
#18
Feng Liu, Ming Zong, Xiaofei Wen, Xuezhu Li, Jun Wang, Yi Wang, Wei Jiang, Xiaojun Li, Zhongliang Guo, Hualin Qi
Podocyte dysfunction is important in the onset and development of diabetic nephropathy (DN). Histone deacetylases (HDACs) have been recently proved to play critical roles in the pathogenesis of DN. As one subtype of the class IIa HDACs, HDAC9 is capable to repress/de-repress their target genes in tumor, inflammation, atherosclerosis and metabolic diseases. In the present study, we investigate whether HDAC9 is involved in the pathophysiologic process of DN, especially the podocyte injury. Firstly, we explored the expression patterns and localization of HDAC9 and found that HDAC9 expression was significantly up-regulated in high glucose (HG)-treated mouse podocytes, as well as kidney tissues from diabetic db/db mice and patients with DN...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27627088/-diabetic-retinopathy-pathogenesis-and-therapeutic-implications
#19
Terezie Pelikánová
UNLABELLED: Diabetic retinopathy (DR) develops in patients with both type 1 and type 2 diabetes and is the major cause of vision loss and blindness in the working population. The main risk factor of DR is hyperglycemia accompanied by enhanced mitochondrial production of reactive oxygen species and oxidative stress, formation of advanced glycation end products (AGE) and hexosamines, increase in polyol metabolism of glucose. The severity of vascular injury depends on the individual genetic background and is modified by other epigenetic, metabolic and haemodynamic factors, including hypertension, dyslipidemia and oxidative stress...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27602081/plasmalemma-vesicle-associated-protein-a-crucial-component-of-vascular-homeostasis
#20
Ling Guo, Hongyan Zhang, Yinglong Hou, Tianshu Wei, Ju Liu
Endothelial subcellular structures, including caveolae, fenestrae and transendothelial channels, are crucial for regulating microvascular function. Plasmalemma vesicle-associated protein (PLVAP) is an endothelial cell-specific protein that forms the stomatal and fenestral diaphragms of blood vessels and regulates basal permeability, leukocyte migration and angiogenesis. Loss of PLVAP in mice leads to premature mortality due to disrupted homeostasis. Evidence from previous studies suggested that PLVAP is involved in cancer, traumatic spinal cord injury, acute ischemic brain disease, transplant glomerulopathy, Norrie disease and diabetic retinopathy...
September 2016: Experimental and Therapeutic Medicine
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