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Inflammation and type 2 diabetes

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https://www.readbyqxmd.com/read/28092457/insulin-sensitivity-and-inflammation-mediate-the-impact-of-fitness-on-cerebrovascular-health-in-adolescents
#1
Po Lai Yau, Naima Ross, Andrew Tirsi, Arslan Arif, Zeynep Ozinci, Antonio Convit
BACKGROUND/OBJECTIVES: To investigate in adolescents the relationships between retinal vessel diameter, physical fitness, insulin sensitivity, and systemic inflammation. METHODS: We evaluated 157 adolescents, 112 with excessive weight and 45 lean, all without type 2 diabetes mellitus. All received detailed evaluations, including measurements of retinal vessel diameter, insulin sensitivity, levels of inflammation, and physical fitness. RESULTS: Overweight/obese adolescents had significantly narrower retinal arteriolar and wider venular diameters, significantly lower insulin sensitivity, and physical fitness...
January 16, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/28092375/postprandial-macrophage-derived-il-1%C3%AE-stimulates-insulin-and-both-synergistically-promote-glucose-disposal-and-inflammation
#2
Erez Dror, Elise Dalmas, Daniel T Meier, Stephan Wueest, Julien Thévenet, Constanze Thienel, Katharina Timper, Thierry M Nordmann, Shuyang Traub, Friederike Schulze, Flurin Item, David Vallois, Francois Pattou, Julie Kerr-Conte, Vanessa Lavallard, Thierry Berney, Bernard Thorens, Daniel Konrad, Marianne Böni-Schnetzler, Marc Y Donath
The deleterious effect of chronic activation of the IL-1β system on type 2 diabetes and other metabolic diseases is well documented. However, a possible physiological role for IL-1β in glucose metabolism has remained unexplored. Here we found that feeding induced a physiological increase in the number of peritoneal macrophages that secreted IL-1β, in a glucose-dependent manner. Subsequently, IL-1β contributed to the postprandial stimulation of insulin secretion. Accordingly, lack of endogenous IL-1β signaling in mice during refeeding and obesity diminished the concentration of insulin in plasma...
January 16, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28091589/platelet-monocyte-and-neutrophil-activation-and-glucose-tolerance-in-south-african-mixed-ancestry-individuals
#3
Glenda M Davison, Bongani B Nkambule, Zibusiso Mkandla, Gloudina M Hon, Andre P Kengne, Rajiv T Erasmus, Tandi E Matsha
Platelet activation has been described in patients with chronic inflammation, however in type 2 diabetes mellitus it remains controversial. We compared levels of platelet leucocyte aggregates, monocyte and granulocyte activation across glucose tolerance statuses in mixed ancestry South Africans. Individuals (206) were recruited from Bellville-South, Cape Town, and included 66% with normal glucose tolerance, 18.7% pre-diabetes, 8.7% screen-detected diabetes and 6.3% known diabetes. Monocyte and neutrophil activation were measured by calculating the percentage of cells expressing CD142 and CD69 while platelet monocyte aggregates were defined as CD14(++) CD42b(+) events and platelet neutrophil aggregates as CD16(++) CD42b(+) events...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089906/adenosine-signaling-in-diabetes-mellitus-and-associated-cardiovascular-and-renal-complications
#4
REVIEW
Maria Peleli, Mattias Carlstrom
Diabetes mellitus is characterized by abnormal glucose and lipid metabolism, and subsequent hyperglycemia and dyslipidemia, which results from defects in pancreatic beta islets insulin secretion and/or decreased insulin sensitivity in metabolically active organs (i.e. liver, skeletal muscle and adipose tissue). Accumulating evidence highlights a critical role for the adenosine system in the regulation of insulin and glucose homeostasis and the pathophysiology of type 2 diabetes (T2D). Adenosine is a key diverse extracellular signaling molecule that regulates several aspects of tissue function by activating four G-protein-coupled receptors (i...
January 12, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28089867/attenuation-of-obesity-induced-inflammation-in-mice-orally-administered-with-salmon-cartilage-proteoglycan-a-prophylactic-agent
#5
Shouhei Hirose, Krisana Asano, Akio Nakane
Obesity is associated with chronic inflammation of adipose tissue and causes development of type 2 diabetes. M1 macrophage population was increased in adipose tissue of obese mouse. M1 macrophages induce insulin resistance through the secretion of proinflammatory cytokines. Our previous studies demonstrated that salmon cartilage proteoglycan (PG) suppresses excess inflammation in various mouse inflammatory diseases. In this study, we examined the effect of PG on type 2 diabetes using high-fat-diet (HFD) induced obese mouse model...
January 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28089828/nitrite-increases-glucose-stimulated-insulin-secretion-and-islet-insulin-content-in-obese-type-2-diabetic-male-rats
#6
Sevda Gheibi, Fatemeh Bakhtiarzadeh, Sajad Jeddi, Khadijeh Farrokhfall, Homeira Zardooz, Asghar Ghasemi
PURPOSE: Reduced bioavailability of nitric oxide (NO) is associated with pathogenesis of type 2 diabetes. Nitrite can act as a substrate for generation of systemic NO. The aim of this study was to examine the effects of nitrite administration on glucose-stimulated insulin secretion (GSIS) and islet insulin content in obese type 2 diabetic rats. METHODS: Male rats were divided into 4 groups: Control, control + nitrite, diabetes, and diabetes + nitrite. Sodium nitrite (50 mg/L in drinking water) was administered for 8 weeks...
January 9, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28077274/the-role-and-regulation-of-the-peroxisome-proliferator-activated-receptor-alpha-in-human-liver
#7
REVIEW
Sander Kersten, Rinke Stienstra
The peroxisome proliferator-activated receptor α (PPARα) is a ligand-activated transcription factor that is abundantly expressed in liver. PPARα is activated by fatty acids and various other lipid species, as well as by a class of chemicals referred to as peroxisome proliferators. Studies in mice have shown that PPARα serves as the master regulator of hepatic lipid metabolism during fasting. In addition, PPARα suppresses inflammation and the acute phase response. Comparatively little is known about PPARα in human liver...
January 7, 2017: Biochimie
https://www.readbyqxmd.com/read/28076480/preliminary-analysis-of-interleukin-6-changes-in-pre-and-postoperative-in-diabetic-patients-with-bmi-35-submitted-to-partial-duodenal-switch
#8
Luciano Dias de Oliveira Reis, Paulo Afonso Nunes Nassif, Fernando Issamu Tabushi, Fábio Quirillo Milléo, Giovani Marino Favero, Bruno Luiz Ariede, Cassiana Franco Dias Dos Reis, Bruno Franco Dalabona
Background: Studies related to obesity have shown association with metabolic syndrome. Data showing that obesity is capable to cause low grade chronic inflammation, without its classic signs and symptoms, call attention to researches to study different cells types and the mechanism of the inflammatory process. Aim: To evaluate the variation of glycated hemoglobin (HbA1c) and the pro-inflammatory cytokine interleukin-6 (IL6) in diabetic patients with BMI <35 kg/m2 in the pre and postoperative of partial duodenal switch...
November 2016: Arquivos Brasileiros de Cirurgia Digestiva: ABCD, Brazilian Archives of Digestive Surgery
https://www.readbyqxmd.com/read/28072592/metabolic-syndrome-associated-osteoarthritis
#9
Alice Courties, Jérémie Sellam, Francis Berenbaum
PURPOSE OF REVIEW: Interest in the metabolic syndrome-associated osteoarthritis phenotype is increasing. Here, we summarize recently published significant findings. RECENT FINDINGS: Meta-analyses confirmed an association between type 2 diabetes and osteoarthritis and between cardiovascular diseases and osteoarthritis. Recent advances in the study of metabolic syndrome-associated osteoarthritis have focused on a better understanding of the role of metabolic diseases in inducing or aggravating joint damage...
January 7, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28069054/the-effect-of-a-novel-probiotic-on-metabolic-biomarkers-in-adults-with-prediabetes-and-recently-diagnosed-type-2-diabetes-mellitus-study-protocol-for-a-randomized-controlled-trial
#10
Talia Palacios, Luis Vitetta, Samantha Coulson, Claire D Madigan, Gareth S Denyer, Ian D Caterson
BACKGROUND: Shifts in the gastrointestinal microbiome have been shown to contribute to the progression of metabolic diseases including prediabetes and type 2 diabetes mellitus. Research suggests that in-vivo modulation of the gut microbiome by specific probiotic microorganisms may improve insulin sensitivity and blood sugar management, preventing or delaying the development of type 2 diabetes mellitus. However, further research is needed to understand the effect of probiotics as a therapy for the treatment of metabolic diseases...
January 9, 2017: Trials
https://www.readbyqxmd.com/read/28067588/health-benefits-of-fiber-fermentation
#11
Wendy J Dahl, Nicole C Agro, Åsa M Eliasson, Kaley L Mialki, Joseph D Olivera, Carley T Rusch, Carly N Young
Although fiber is well recognized for its effect on laxation, increasing evidence supports the role of fiber in the prevention and treatment of chronic disease. The aim of this review is to provide an overview of the health benefits of fiber and its fermentation, and describe how the products of fermentation may influence disease risk and treatment. Higher fiber intakes are associated with decreased risk of cardiovascular disease, type 2 diabetes, and some forms of cancer. Fiber may also have a role in lowering blood pressure and in preventing obesity by limiting weight gain...
January 9, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28067023/elevated-serum-milk-fat-globule-epidermal-growth-factor-8-levels-in-type-2-diabetic-patients-are-suppressed-by-overweight-or-obese-status
#12
Yuanyuan Li, Wenzhuo Ran, Jiaqiang Zhang, Shi Chen, Yihang Li, Deng Luo, Chen Wang, Weiping Jia
Inflammation is the most important link between obesity and type 2 diabetes (T2D). Although milk fat globule-epidermal growth factor 8 (MFG-E8) is a key mediator in anti-inflammatory responses, its role in obesity and diabetes is not yet completely understood. We aimed to measure MFG-E8 serum levels and to explore the role of MFG-E8 in obesity and T2D. Fasting serum MFG-E8 levels were quantified by enzyme-linked immunosorbent assay for 168 individuals, whose oral glucose tolerance test was conducted, and levels of inflammatory factors, including tumor necrosis factor-α (TNF-α) and C-reactive protein, were measured...
January 9, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28066896/parasite-excretory-secretory-products-and-their-effects-on-metabolic-syndrome
#13
Jenny Crowe, Felicity E Lumb, Margaret M Harnett, William Harnett
Obesity, one of the main causes of metabolic syndrome (MetS), is an increasingly common health and economic problem worldwide, and one of the major risk factors for developing type 2 diabetes and cardiovascular disease. Chronic, low-grade inflammation is associated with MetS and obesity. A dominant type 2/anti-inflammatory response is required for metabolic homeostasis within adipose tissue: during obesity, this response is replaced by infiltrating, inflammatory macrophages and T cells. Helminths and certain protozoan parasites are able to manipulate the host immune response towards a TH2 immune phenotype that is beneficial for their survival and there is emerging data that there is an inverse correlation between the incidence of MetS and helminth infections, suggesting that, as with autoimmune and allergic diseases, helminths may play a protective role against MetS disease...
January 9, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28066685/linoleic-acid-is-a-diabetes-relevant-stimulator-of-retinal-inflammation-in-human-retinal-muller-cells-and-microvascular-endothelial-cells
#14
Megan E Capozzi, Gary W McCollum, David B Cousins, John S Penn
OBJECTIVE: To determine the effect of oleic acid and linoleic acid on the production and secretion of specific diabetic retinopathy- (DR-) related cytokines: vascular endothelial growth factor (VEGF), interleukin-6 (IL-6), and interleukin-8 (IL-8) by human retinal glial cells, retinal endothelial cells, and retinal pigment epithelial cells. These expression profiles will be compared to those obtained by treatment of the same cell types with elevated D-glucose, a diabetes-relevant stimulus often used in retinal cell culture experiments...
December 2016: Journal of Diabetes & Metabolism
https://www.readbyqxmd.com/read/28065744/efficacy-and-safety-of-glucagon-like-peptide-1-receptor-agonists-in-non-alcoholic-fatty-liver-disease-a-systematic-review-and-meta-analysis
#15
Yajie Dong, Qingguo Lv, Sheyu Li, Yuan Wu, Ling Li, Juan Li, Fang Zhang, Xin Sun, Nanwei Tong
BACKGROUND AND OBJECTIVE: New drugs are urgently needed for the treatment of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH). The aim of this meta-analysis was to evaluate the efficacy and safety of glucagon-like peptide-1 receptor agonists (GLP-1RAs) in NAFLD/NASH. METHODS: We searched the MEDLINE, Embase, and Cochrane Library Central to identify randomized controlled trials (RCTs) and observational studies that compared GLP-1RAs with a control treatment or baseline values with respect to efficacy and safety in patients with NAFLD/NASH...
January 5, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28062922/interferon-%C3%AE-mediates-human-beta-cell-hla-class-i-overexpression-endoplasmic-reticulum-stress-and-apoptosis-three-hallmarks-of-early-human-type-1-diabetes
#16
Laura Marroqui, Reinaldo S Dos Santos, Anne Op de Beeck, Alexandra Coomans de Brachène, Lorella Marselli, Piero Marchetti, Decio L Eizirik
AIMS/HYPOTHESIS: Three hallmarks of the pancreatic islets in early human type 1 diabetes are overexpression of HLA class I, endoplasmic reticulum (ER) stress and beta cell apoptosis. The mediators of these phenomena remain to be defined. The type I interferon IFNα is expressed in human islets from type 1 diabetes patients and mediates HLA class I overexpression. We presently evaluated the mechanisms involved in IFNα-induced HLA class I expression in human beta cells and determined whether this cytokine contributes to ER stress and apoptosis...
January 6, 2017: Diabetologia
https://www.readbyqxmd.com/read/28061846/map4k4-and-il-6-th17-cells-play-important-roles-in-non-obese-type-2-diabetes
#17
REVIEW
Huai-Chia Chuang, Tse-Hua Tan
Obesity is a causal factor of type 2 diabetes (T2D); however, people without obesity (including lean, normal weight, or overweight) may still develop T2D. Non-obese T2D is prevalent in Asia and also frequently occurs in Europe. Recently, multiple evidences oppose the notion that either obesity or central obesity (visceral fat accumulation) promotes non-obese T2D. Several factors such as inflammation and environmental factors contribute to non-obese T2D. According to the data derived from gene knockout mice and T2D clinical samples in Asia and Europe, the pathogenesis of non-obese T2D has been unveiled recently...
January 7, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28061407/the-antioxidant-role-of-agomelatine-and-gallic-acid-on-oxidative-stress-in-stz-induced-type-i-diabetic-rat-testes
#18
Gurkan Yigitturk, Ahmet Cagdas Acara, Oytun Erbas, Fatih Oltulu, Nefise Ulku Karabay Yavasoglu, Aysegul Uysal, Altug Yavasoglu
Diabetes is a multisystem disorder and its effects are observed on the reproductive system. One of the main causes of testicular tissue damage is diabetes-induced overproduction of reactive oxygen species and glycated end products. The main objectives of this study were to investigate the possible effects of agomelatine (AG) and gallic acid (GA) in suppressing oxidative stress in Type I diabetes induced testicular damage. A total of 28 adult male rats were included in the study. Diabetes was induced by intraperitoneal injection of streptozocin (STZ, 55mg/kg) to 21 rats, which were then randomly assigned to 3 groups; 1mL saline solution was given to the diabetes+saline group by oral gavage, 20mg/kg/day oral AG was given to the diabetes+AG group, and 20mg/kg/day oral GA was given to the diabetes+GA group for 4 weeks...
January 3, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28060743/2017-update-on-the-relationship-between-diabetes-and-colorectal-cancer-epidemiology-potential-molecular-mechanisms-and-therapeutic-implications
#19
REVIEW
Nieves González, Isabel Prieto, Laura Del Puerto-Nevado, Sergio Portal-Nuñez, Juan Antonio Ardura, Marta Corton, Beatriz Fernández-Fernández, Oscar Aguilera, Carmen Gomez-Guerrero, Sebastián Mas, Juan Antonio Moreno, Marta Ruiz-Ortega, Ana Belen Sanz, Maria Dolores Sanchez-Niño, Federico Rojo, Fernando Vivanco, Pedro Esbrit, Carmen Ayuso, Gloria Alvarez-Llamas, Jesús Egido, Jesús García-Foncillas, Alberto Ortiz, Diabetes Cancer Connect Consortium
Worldwide deaths from diabetes mellitus (DM) and colorectal cancer increased by 90% and 57%, respectively, over the past 20 years. The risk of colorectal cancer was estimated to be 27% higher in patients with type 2 DM than in non-diabetic controls. However, there are potential confounders, information from lower income countries is scarce, across the globe there is no correlation between DM prevalence and colorectal cancer incidence and the association has evolved over time, suggesting the impact of additional environmental factors...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28058805/biomarker-signatures-of-aging
#20
Paola Sebastiani, Bharat Thyagarajan, Fangui Sun, Nicole Schupf, Anne B Newman, Monty Montano, Thomas T Perls
Because people age differently, age is not a sufficient marker of susceptibility to disabilities, morbidities, and mortality. We measured nineteen blood biomarkers that include constituents of standard hematological measures, lipid biomarkers, and markers of inflammation and frailty in 4704 participants of the Long Life Family Study (LLFS), age range 30-110 years, and used an agglomerative algorithm to group LLFS participants into clusters thus yielding 26 different biomarker signatures. To test whether these signatures were associated with differences in biological aging, we correlated them with longitudinal changes in physiological functions and incident risk of cancer, cardiovascular disease, type 2 diabetes, and mortality using longitudinal data collected in the LLFS...
January 6, 2017: Aging Cell
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