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Causes of diabetes

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https://www.readbyqxmd.com/read/28938442/angiotensin-ii-causes-beta-cell-dysfunction-through-an-er-stress-induced-pro-inflammatory-response
#1
Stanley M H Chan, Yeh-Siang Lau, Alyson A Miller, Jacqueline M Ku, Simon Potocnik, Ji-Ming Ye, Owen L Woodman, Terence P Herbert
The metabolic syndrome is associated with an increase in the activation of renin angiotensin system (RAS) and inhibition of RAS reduces the incidence of new onset diabetes. Importantly, angiotensin II (AngII), independently of its vasoconstrictor action causes beta-cell inflammation and dysfunction, which may be an early step in the development of type-2 diabetes. The aim of this study was to determine how AngII causes beta cell dysfunction. Islets of Langerhans were isolated from C57BL/6J mice that had been infused with AngII in the presence or absence of taurine-conjugated ursodeoxycholic acid (TUDCA) and effects on ER stress, inflammation and beta cell function determined...
August 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938426/a-sustained-activation-of-pancreatic-nmdars-is-a-novel-factor-of-%C3%AE-cell-apoptosis-and-dysfunction
#2
Xiao-Ting Huang, Shao-Jie Yue, Chen Li, Yan-Hong Huang, Qing-Mei Cheng, Xiao-Hong Li, Cai-Xia Hao, Ling-Zhi Wang, Jian-Ping Xu, Ming Ji, Chen Chen, Dan-Dan Feng, Zi-Qiang Luo
Type 2 diabetes, which features β-cell failure, is caused by the decrease of β-cell mass and insulin secretory function. Current treatments fail to halt the decrease of functional β-cell mass. Strategies to prevent β-cell apoptosis and dysfunction are highly desirable. Recently, our group and others have reported that blockade of N-methyl-D-aspartate receptors (NMDARs) in the islets has been proposed to prevent the progress of type 2 diabetes through improving β-cell function. It suggests that a sustained activation of the NMDARs may exhibit deleterious effect on β-cells...
September 4, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938403/change-in-weight-and-body-mass-index-associated-with-all-cause-mortality-in-korea-a-nationwide-longitudinal-study
#3
Yang-Hyun Kim, Seon Mee Kim, Kyung-do Han, Jang-Won Son, Seong-Su Lee, Sang Woo Oh, Won-Young Lee, Soon Jib Yoo
Background: Many studies have reported conflicting evidence on the association between weight change and mortality. Objective: We investigated the association between weight change and subsequent all-cause mortality, using a large-scale population-based cohort from the National Health Insurance System health checkup data between 2005 and 2015. Methods: A total of 11,524,763 subjects aged over 20 years were included. Weight was measured every two years and weight change over 4 years was divided into eight categories, from weight loss ≥15% to weight gain ≥20%, for every 5% of weight change...
August 24, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938238/impact-of-diabetes-mellitus-on-5-year-clinical-outcomes-in-patients-with-chronic-total-occlusion-lesions
#4
Ahmed Mashaly, Seung-Woon Rha, Byoung Geol Choi, Man Jong Baek, Yang Gi Ryu, Se Yeon Choi, Jae Kyeong Byun, Hu Li, Min Suk Shim, Won Young Jang, Woohyeun Kim, Jun Hyuk Kang, Eun Jin Park, Jah Yeon Choi, Jin Oh Na, Cheol Ung Choi, Hong Euy Lim, Eung Ju Kim, Chang Gyu Park, Hong Seog Seo, Dong Joo Oh
BACKGROUND: Diabetes mellitus (DM) is a major predictor of cardiovascular morbidity and mortality. However, there are limited data on the impact of DM in patients who have chronic total occlusion (CTO) lesion on long-term outcomes. PATIENTS AND METHODS: A total of 822 CTO patients who underwent coronary angiography, treated by either percutaneous coronary intervention or optimal medical therapy, were enrolled and divided into two groups: (i) diabetic group (n=363) and (ii) nondiabetic group (n=459)...
September 21, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28937998/selection-of-dna-aptamers-specific-for-live-pseudomonas-aeruginosa
#5
Jennifer Soundy, Darren Day
Pseudomonas aeruginosa is an opportunistic pathogen that causes significant morbidity and mortality in immunocompromised patients, particular cystic fibrosis sufferers, burns victims, diabetics and neonates. It thrives in moist places where it forms biofilms that are exceedingly difficult to eradicate on hospital surfaces, in water supplies and implanted biomaterials. Using a live cell SELEX approach we selected DNA aptamers to P. aeruginosa grown as biofilms in microfluidic cells. From a pool of aptamer candidates showing tight binding a stem-loop structure was identified as being important for binding...
2017: PloS One
https://www.readbyqxmd.com/read/28937949/international-vision-care-issues-and-approaches
#6
Rohit C Khanna, Srinivas Marmamula, Gullapalli N Rao
Globally, 32.4 million individuals are blind and 191 million have moderate or severe visual impairment (MSVI); 80% of cases of blindness and MSVI are avoidable. However, great efforts are needed to tackle blindness and MSVI, as eye care in most places is delivered in isolation from and without significant integration with general health sectors. Success stories, including control of vitamin A deficiency, onchocerciasis, and trachoma, showed that global partnerships, multisectoral collaboration, public-private partnerships, corporate philanthropy, support from nongovernmental organizations-both local and international-and governments are responsible for the success of these programs...
September 15, 2017: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28937866/soluble-vascular-adhesion-protein-1-mediates-spermine-oxidation-as-semicarbazide-sensitive-amine-oxidase-possible-role-in-proliferative-diabetic-retinopathy
#7
Miyuki Murata, Kousuke Noda, Akiko Kawasaki, Shiho Yoshida, Yoko Dong, Michiyuki Saito, Zhenyu Dong, Ryo Ando, Shohei Mori, Wataru Saito, Atsuhiro Kanda, Susumu Ishida
Purpose/Aim of the study: To explore the possible role of vascular adhesion protein-1 (VAP-1) via its enzymatic function as a semicarbazide-sensitive amine oxidase (SSAO) in the pathogenesis of proliferative diabetic retinopathy (PDR). MATERIALS AND METHODS: The levels of soluble VAP-1/SSAO and the unsaturated aldehyde acrolein (ACR)-conjugated protein, N(ε)-(3-formyl-3, 4-dehydropiperidino) lysine adduct (FDP-Lys), were measured in vitreous fluid samples of PDR and non-diabetic patients using ELISA...
September 22, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28937704/a-high-concentration-of-fatty-acids-induces-tnf-%C3%AE-as-well-as-no-release-mediated-by-the-p2x4-receptor-and-the-protective-effects-of-puerarin-in-raw264-7-cells
#8
Yun-Ming Tu, Cheng-Xin Gong, Lu Ding, Xing-Zi Liu, Tao Li, Fang-Fang Hu, Shuo Wang, Chao-Peng Xiong, Shang-Dong Liang, Hong Xu
Circulating levels of free fatty acids (FFAs) are often found to be increased in patients with type 2 diabetes mellitus (T2DM) and metabolic syndrome (MS). High plasma FFA levels may give rise to maladaptive macrophage activation and promote inflammatory responses, which has been proposed as a potential mechanism for the development of DM and MS. P2X4 receptor (P2X4R), a ligand-gated cation channel activated by extracellular adenosine triphosphate (ATP), plays a primary role in the regulation of inflammatory responses...
September 22, 2017: Food & Function
https://www.readbyqxmd.com/read/28937612/houttuynia-cordata-facilitates-metformin-on-ameliorating-insulin-resistance-associated-with-gut-microbiota-alteration-in-oletf-rats
#9
Jing-Hua Wang, Shambhunath Bose, Soo-Kyoung Lim, AbuZar Ansari, Young-Won Chin, Han Seok Choi, Hojun Kim
Metformin and Houttuynia cordata are representative anti-diabetic therapeutics in western and oriental medicine, respectively. The current study examined the synergistic anti-diabetic effect of Houttuynia cordata extraction (HCE) and metformin combination in Otsuka Long-Evans Tokushima Fatty (OLETF) rats. Fecal microbiota were analyzed by denaturing gradient gel electrophoresis (DGGE) and real-time PCR. Combining HCE + metformin resulted in significantly ameliorated glucose tolerance (oral glucose tolerance test (OGTT))-the same as metformin alone...
September 22, 2017: Genes
https://www.readbyqxmd.com/read/28937487/focal-hepatic-glycogenosis-in-a-patient-with-uncontrolled-diabetes-mellitus-type-1
#10
Tetiana Glushko, Sergiy V Kushchayev, Dmitry Trifanov, Aliaksei Salei, Diego Morales, Gerard Berry, Justin Mackey, Oleg M Teytelboym
Hepatomegaly and elevated liver enzymes in patients with diabetes are commonly associated with fatty liver disease. However, physicians often forget about another intrinsic substance that can cause a similar clinical picture-glycogen. Liver stores approximately one third of the total body glycogen and is responsible for blood glucose homeostasis. Excessive hepatocellular glycogen accumulation occurs not only in congenital glycogen storage diseases, but also in acquired conditions associated with hyperglycemic-hyperinsulinemic states such as uncontrolled diabetes mellitus, high-dose corticosteroid use, and dumping syndrome...
September 20, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28937255/the-assessment-of-the-serum-c-peptide-and-plasma-glucose-levels-by-orally-administered-whey-proteins-in-type-2-diabetes-mellitus
#11
E Wildová, P Kraml, J Potočková, P Dlouhý, M Anděl
A personalized antidiabetic therapy is not yet part of the official guidelines of professional societies for clinical practice. The aim of this study was to evaluate the serum C-peptide and plasma glucose levels in patients with type 2 diabetes mellitus (T2DM) after oral administration of whey proteins. Sixteen overweight T2DM Caucasians with good glycaemic control and with preserved fasting serum C-peptide levels (> 200 nmol/l) were enrolled in this study. Two oral stimulation tests - one with 75 g of glucose (OGTT) and the other with 75 g of whey proteins (OWIST) - were administered for assessing serum C-peptide and plasma glucose levels in each participant...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28937076/prevalence-and-risk-factors-of-chronic-kidney-disease-in-newly-diagnosed-and-untreated-hypertensive-patients-in-cameroon-a-cross-sectional-study
#12
Félicite Kamdem, Fernando Kemta Lekpa, Marie Solange Doualla, Yvette Ngo Nouga, Olivier Donfack Sontsa, Elvis Temfack, Samuel Kingue
Chronic kidney disease (CKD) has emerged as a worldwide problem and is a major cause for comorbidity in hypertensive patients. In an attempt to enhance awareness and to help in establishing preventive measures and care, it is necessary to describe CKD among newly diagnosed and untreated hypertensive patients. We conducted a cross-sectional study to describe the characteristics of CKD among newly diagnosed, treatment naïve, hypertensive patients in four health-care centers in the city of Douala, Cameroon. Sociodemographic and biological data were collected and serum creatinine was measured by enzymatic - colorimetric methods...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28937072/epidemiology-of-end-stage-renal-disease-in-dubai-single-center-data
#13
Fakhriya Alalawi, Maseer Ahmed, Hind AlNour, Malaz Noralla, Amna Alhadari
Hemodialysis (HD) was first established in Dubai in the year 1980 and was in its full capacity by the year 1983. Since then, the HD population has been growing rapidly. This report represents the demographic data and clinical characteristics of our HD patients during the period between January 2012 and October 2016. Diabetic nephropathy (57%) and hypertension (12.4%) are emerging as the most common causes of end-stage renal disease (ESRD) in our data, followed by undetermined causes in those who presented as ESRD (10...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28937069/oral-health-in-diabetic-and-nondiabetic-patients-with-chronic-kidney-disease
#14
Lingam Amara Swapna, Pradeep Koppolu, Jyothi Prince
The objective of our study is to assess the subjective and objective oral manifestations and salivary pH in diabetic and nondiabetic uremic patients at a nephrology clinic. A total of 194 diabetic and nondiabetic patients with chronic kidney disease (CKD), who were divided into four groups, Group A, B, C, D, and who were attending a nephrology clinic were included in the study. Predialytic unstimulated whole salivary pH was recorded using pH- measuring strips. Subjective and objective findings were evaluated and recorded in the specially designed pro forma...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28936736/pathological-effects-of-exosomes-in-mediating-diabetic-cardiomyopathy
#15
Esam S B Salem, Guo-Chang Fan
Diabetic subjects are at risk of developing cardiovascular disease, which accounts for 60-80% of diabetes-related mortality. Atherosclerosis is still considered as a leading cause of heart failure in diabetic patients, but it could also be an intrinsic and long-term effect of contractile cardiac cells malfunction, known as diabetic cardiomyopathy (DCM). Pathologically, this cardiac dysfunction is manifested by inflammation, apoptosis, fibrosis, hypertrophy and altered cardiomyocytes metabolism. However, the underlying molecular mechanisms of DCM pathophysiology are not clearly understood...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936623/acute-renal-metabolic-effect-of-metformin-assessed-with-hyperpolarised-mri-in-rats
#16
Haiyun Qi, Per M Nielsen, Marie Schroeder, Lotte B Bertelsen, Fredrik Palm, Christoffer Laustsen
AIMS/HYPOTHESIS: Metformin inhibits hepatic mitochondrial glycerol phosphate dehydrogenase, thereby increasing cytosolic lactate and suppressing gluconeogenesis flux in the liver. This inhibition alters cytosolic and mitochondrial reduction-oxidation (redox) potential, which has been reported to protect organ function in several disease states including diabetes. In this study, we investigated the acute metabolic and functional changes induced by metformin in the kidneys of both healthy and insulinopenic Wistar rats used as a model of diabetes...
September 21, 2017: Diabetologia
https://www.readbyqxmd.com/read/28936426/comparison-of-diabetic-and-non-diabetic-human-leukocytic-responses-to-different-capsule-types-of-klebsiella-pneumoniae-responsible-for-causing-pyogenic-liver-abscess
#17
I Russel Lee, Ethel Sng, Kok-Onn Lee, James S Molton, Monica Chan, Shirin Kalimuddin, Ezlyn Izharuddin, David C Lye, Sophia Archuleta, Yunn-Hwen Gan
The major risk factor for Klebsiella liver abscess (KLA) is type 2 diabetes mellitus (DM), but the immunological mechanisms involved in the increased susceptibility are poorly defined. We investigated the responses of neutrophils and peripheral blood mononuclear cells (PBMCs) to hypervirulent Klebsiella pneumoniae (hvKP), the causative agent of KLA. DNA and myeloperoxidase levels were elevated in the plasma of KLA patients compared to uninfected individuals indicating neutrophil activation, but diabetic status had no effect on these neutrophil extracellular trap (NET) biomarkers in both subject groups...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28935921/probiotic-reduces-bacterial-translocation-in-type-2-diabetes-mellitus-a-randomised-controlled-study
#18
Junko Sato, Akio Kanazawa, Kosuke Azuma, Fuki Ikeda, Hiromasa Goto, Koji Komiya, Rei Kanno, Yoshifumi Tamura, Takashi Asahara, Takuya Takahashi, Koji Nomoto, Yuichiro Yamashiro, Hirotaka Watada
Gut bacterial translocation to the blood may play an important role in the development of insulin resistance in type 2 diabetes. Here, we performed an interventional randomised control study to investigate whether probiotics could reduce bacterial translocation and cause changes in the gut microbiota. Seventy Japanese patients with type 2 diabetes were randomised to two groups: the probiotic group drank Lactobacillus casei strain Shirota-fermented milk, while the control group ingested no probiotics. The trial was conducted for 16 weeks...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935461/short-and-long-term-outcome-in-very-old-patients-with-st-elevation-myocardial-infarction-after-primary-percutaneous-coronary-intervention
#19
Roberta Sappa, Maria Teresa Grillo, Martino Cinquetti, Giulio Prati, Leonardo Spedicato, Gaetano Nucifora, Andrea Perkan, Davide Zanuttini, Gianfranco Sinagra, Alessandro Proclemer
BACKGROUND: Although octogenarians constitute a fast-growing portion of cardiovascular patients, few data are available on the outcome of patients aged ≥85 years with ST-Elevation Myocardial Infarction (STEMI). METHODS AND RESULTS: We analyzed 126 consecutive patients aged ≥85 years (age 88±2 years) with STEMI, undergoing primary percutaneous coronary intervention (pPCI) within 12 hours from symptoms onset. Long-term follow-up (median 898 days) was obtained for the 102 patients surviving the index-hospitalization...
September 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28935419/red-near-infrared-light-stimulates-release-of-an-endothelium-dependent-vasodilator-and-rescues-vascular-dysfunction-in-a-diabetes-model
#20
Agnes Keszler, Brian Lindemer, Dorothee Weihrauch, Deron Jones, Neil Hogg, Nicole L Lohr
Peripheral artery disease (PAD) is a morbid condition whereby ischemic peripheral muscle causes pain and tissue breakdown. Interestingly, PAD risk factors, e.g. diabetes mellitus, cause endothelial dysfunction secondary to decreased nitric oxide (NO) levels, which could explain treatment failures. Previously, we demonstrated 670nm light (R/NIR) increased NO from nitrosyl-heme stores, therefore we hypothesized R/NIR can stimulate vasodilation in healthy and diabetic blood vessels. Vasodilation was tested by ex vivo pressure myography in wild type C57Bl/6, endothelial nitric oxide synthase (eNOS) knockout, and db/db mice (10mW/cm(2) for 5min with 10min dark period)...
September 18, 2017: Free Radical Biology & Medicine
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