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Resistance insulinic

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https://www.readbyqxmd.com/read/28922661/lysophosphatidic-acid-inhibits-insulin-signaling-in-primary-rat-hepatocytes-via-the-lpa3-receptor-subtype-and-is-increased-in-obesity
#1
Susann Fayyaz, Lukasz Japtok, Fabian Schumacher, Dominik Wigger, Tim Julius Schulz, Kathrin Haubold, Erich Gulbins, Heinz Völler, Burkhard Kleuser
BACKGROUND/AIMS: Obesity is a main risk factor for the development of hepatic insulin resistance and it is accompanied by adipocyte hypertrophy and an elevated expression of different adipokines such as autotaxin (ATX). ATX converts lysophosphatidylcholine to lysophosphatidic acid (LPA) and acts as the main producer of extracellular LPA. This bioactive lipid regulates a broad range of physiological and pathological responses by activation of LPA receptors (LPA1-6). METHODS: The activation of phosphatidylinositide 3-kinases (PI3K) signaling (Akt and GSK-3ß) was analyzed via western blotting in primary rat hepatocytes...
September 1, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28922096/the-effects-of-ramadan-fasting-on-body-composition-blood-pressure-glucose-metabolism-and-markers-of-inflammation-in-nafld-patients-an-observational-trial
#2
Fereshteh Aliasghari, Azimeh Izadi, Bahram Pourghassem Gargari, Sara Ebrahimi
BACKGROUND AND AIM: Nonalcoholic fatty liver disease (NAFLD) is a chronic liver disease and is a serious global health problem. Regarding the increasing prevalence of NAFLD, finding various strategies to prevent and manage the disease is of great importance. The aim of this study was to determine the effects of caloric restriction during Ramadan fasting on anthropometric indices, fasting glucose, plasma insulin, insulin resistance, and inflammatory cytokines (C-reactive protein and interleukin 6) in patients with NAFLD...
September 18, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28922017/effects-of-chronic-and-intermittent-calorie-restriction-on-adropin-levels-in-breast-cancer
#3
Bilge G Tuna, Pinar B Atalay, Mine Altunbek, Batuhan M Kalkan, Soner Dogan
Adropin is a peptide hormone that has been implicated in insulin resistance and as a potential regulator of growth. The aim of this study is to determine the effect of calorie restriction on circulating levels of adropin in the MMTV-TGFα breast cancer mouse model and investigate the effects of adropin peptide on the viability of MCF-7 and MDA-231 breast cancer cells in culture. Ten-week-old mice were assigned to either ad libitum-fed (AL), chronic calorie-restricted, or intermittent calorie-restricted groups...
September 18, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28921259/epigenetic-effects-of-the-pregnancy-mediterranean-diet-adherence-on-the-offspring-metabolic-syndrome-markers
#4
REVIEW
David Lorite Mingot, Eva Gesteiro, Sara Bastida, Francisco J Sánchez-Muniz
Metabolic syndrome (MS) has a multifactorial and not yet fully clarified origin. Insulin resistance is a key element that connects all the accepted components of MS (obesity, dyslipemia, high blood pressure, and hyperglycemia). There is strong evidence that epigenetic changes during fetal development are key factors in the development of MS. These changes are induced by maternal nutrition, among different factors, affecting the intrauterine environment. The Mediterranean diet has been shown to be a healthy eating pattern that protects against the development of MS in adults...
September 18, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28920721/-changes-in-carbohydrate-metabolism-after-kidney-transplantation-and-their-effects-on-cardiovascular-risk
#5
Bernadett Borda, Edit Szederkényi, Zoltán Hódi, Aurél Ottlakán, Viktor Szabó, György Lázár
INTRODUCTION: Cardiovascular disease is the major cause of deaths after transplantation, with diabetes mellitus being the main risk factor in development. AIM: The aim of our study was to assess the prevalence of new onset diabetes mellitus in connection with the cardiovascular risk predicted by the HEART Score. METHOD: 44 patients were involved in our study; after overview of baseline data, OGTT was performed, followed by patient classification into the following groups: normal, impaired fasting glucose/impaired glucose tolerance, and new onset diabetes mellitus...
September 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28919427/age-dependent-atrial-arrhythmic-phenotype-secondary-to-mitochondrial-dysfunction-in-pgc-1%C3%AE-deficient-murine-hearts
#6
Haseeb Valli, Shiraz Ahmad, Karan Chadda, Ali Al-Hadithi, Andrew A Grace, Kamalan Jeevaratnam, Christopher L-H Huang
INTRODUCTION: Ageing and several age-related chronic conditions including obesity, insulin resistance and hypertension are associated with mitochondrial dysfunction and represent independent risk factors for atrial fibrillation (AF). MATERIALS AND METHODS: Atrial arrhythmogenesis was investigated in Langendorff-perfused young (3-4 month) and aged (>12 month), wild type (WT) and peroxisome proliferator activated receptor-γ coactivator-1β deficient (Pgc-1β(-/-)) murine hearts modeling age-dependent chronic mitochondrial dysfunction during regular pacing and programmed electrical stimulation (PES)...
September 14, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28919305/magnolol-protects-pancreatic-%C3%AE-cells-against-methylglyoxal-induced-cellular-dysfunction
#7
Kwang Sik Suh, Suk Chon, Woon-Won Jung, Eun Mi Choi
Chronic hyperglycemia aggravates insulin resistance, in part due to increased formation of advanced glycation end-products (AGEs). Methylglyoxal (MG), a major precursor of AGEs, accumulates abnormally in various tissues and organs and participates in oxidative damage. We investigated the insulinotropic benefits of magnolol, a hydroxylated biphenyl compound isolated from Magnolia officinalis, in pancreatic β-cells exposed to MG in vitro. When exposed to cytotoxic levels of MG for 48 h, RIN-m5F β-cells exhibited a significant loss of viability and impaired insulin secretion, whereas pretreatment with magnolol protected against MG-induced cell death and decreased insulin secretion...
September 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28919254/palmitic-acid-stimulates-energy-metabolism-and-inhibits-insulin-pi3k-akt-signaling-in-differentiated-human-neuroblastoma-cells-the-role-of-mtor-activation-and-mitochondrial-ros-production
#8
Erika Calvo-Ochoa, Karina Sánchez-Alegría, Cecilia Gómez-Inclán, Patricia Ferrera, Clorinda Arias
The high consumption of saturated lipids has been largely associated with the increasing prevalence of metabolic diseases. In particular, saturated fatty acids such as palmitic acid (PA) have been implicated in the development of insulin resistance in peripheral tissues. However, how neurons develop insulin resistance in response to lipid overload is not fully understood. Here, we used cultured rat cortical neurons and differentiated human neuroblastoma cells to demonstrate that PA blocks insulin-induced metabolic activation, inhibits the activation of the insulin/PI3K/Akt pathway and activates mTOR kinase downstream of Akt...
September 15, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28919160/polycystic-ovary-syndrome-in-adolescents
#9
REVIEW
Stephanie S Rothenberg, Rachel Beverley, Emily Barnard, Massoud Baradaran-Shoraka, Joseph S Sanfilippo
Polycystic ovary syndrome (PCOS) typically manifests with a combination of menstrual dysfunction and evidence of hyperandrogenism in the adolescent population. No single cause has been identified; however, evidence suggests a complex interplay between genetic and environmental factors. Polycystic ovary syndrome presents a particular diagnostic challenge in adolescents as normal pubertal changes can present with a similar phenotype. Management of PCOS in the adolescent population should focus on a multi-modal approach with lifestyle modification and pharmacologic treatment to address bothersome symptoms...
September 1, 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28918936/intermittent-fasting-promotes-white-adipose-browning-and-decreases-obesity-by-shaping-the-gut%C3%A2-microbiota
#10
Guolin Li, Cen Xie, Siyu Lu, Robert G Nichols, Yuan Tian, Licen Li, Daxeshkumar Patel, Yinyan Ma, Chad N Brocker, Tingting Yan, Kristopher W Krausz, Rong Xiang, Oksana Gavrilova, Andrew D Patterson, Frank J Gonzalez
While activation of beige thermogenesis is a promising approach for treatment of obesity-associated diseases, there are currently no known pharmacological means of inducing beiging in humans. Intermittent fasting is an effective and natural strategy for weight control, but the mechanism for its efficacy is poorly understood. Here, we show that an every-other-day fasting (EODF) regimen selectively stimulates beige fat development within white adipose tissue and dramatically ameliorates obesity, insulin resistance, and hepatic steatosis...
September 13, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28918389/glucagon-like-peptide-1-receptor-agonists-for-the-management-of-obesity-and-non-alcoholic-fatty-liver-disease-a-novel-therapeutic-option
#11
REVIEW
Gauri Dhir, Kenneth Cusi
Obesity is a major risk factor for the development of type 2 diabetes mellitus (T2DM), and is associated with a cluster of metabolic factors that lead to poor cardiovascular outcomes. In non-alcoholic fatty liver disease (NAFLD), liver fat (triglyceride) accumulation closely mirrors adipose tissue dysfunction and insulin resistance in obesity and T2DM. It is now recognized as the most common chronic liver disease in Westernized societies, often progressing to more severe forms of the disease such as nonalcoholic steatohepatitis (NASH), or cirrhosis and hepatocellular carcinoma...
September 15, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28918170/lifestyle-predictors-of-obese-and-non-obese-patients-with-nonalcoholic-fatty-liver-disease-a-cross-sectional-study
#12
Joo Hee Kwak, Dae Won Jun, Seung Min Lee, Yong Kyun Cho, Kang Nyeong Lee, Hang Lak Lee, Oh Young Lee, Ho Soon Choi, Byung Chul Yoon
BACKGROUND & AIMS: Most people with nonalcoholic fatty liver disease (NAFLD) are obese, and they usually eat more while being less physically active as compared to healthy individuals. However, little is known about the lifestyle patterns of non-obese or obese patients with NAFLD. The aim of this study was to investigate nutrition components and behavioral differences between non-obese and obese patients with NAFLD. METHODS: This is a cross-sectional study comprising of 209 patients...
August 30, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28917655/inactivation-of-tnf-lt-locus-alters-mouse-metabolic-response-to-concentrated-ambient-pm2-5
#13
Ziying Hu, Minjie Chen, Huifen Zhou, Anui Tharakan, Xiaoke Wang, Lianglin Qiu, Shuai Liang, Xiaobo Qin, Yuhao Zhang, Wanjun Wang, Yanyi Xu, Zhekang Ying
BACKGROUND: Exposure to ambient fine particulate matter (PM2.5) is associated with increased cardiometabolic morbidity and mortality. This is widely believed to be attributable to PM2.5 exposure-induced pulmonary and subsequent systemic inflammation. Tumor necrosis factor alpha (TNFα), lymphotoxin α (LTα), and lymphotoxin β (LTβ) are three homologous pro-inflammatory cytokines, each with both unique and redundant activities in inflammation. Their role in PM2.5 exposure-induced inflammation and adverse cardiometabolic effects has to be determined...
September 13, 2017: Toxicology
https://www.readbyqxmd.com/read/28917508/insulin-dependent-metabolic-and-inotropic-responses-in-the-heart-are-modulated-by-hydrogen-peroxide-from-nadph-oxidase-isoforms-nox2-and-nox4
#14
Benjamin Steinhorn, Juliano L Sartoretto, Andrea Sorrentino, Natalia Romero, Hermann Kalwa, E Dale Abel, Thomas Michel
RATIONALE: Hydrogen peroxide (H2O2) is a stable reactive oxygen species (ROS) that has long been implicated in insulin signal transduction in adipocytes. However, H2O2's role in mediating insulin's effects on the heart are unknown. OBJECTIVE: We investigated the role of H2O2 in activating insulin-dependent changes in cardiac myocyte metabolic and inotropic pathways. The sources of insulin-dependent H2O2 generation were also studied. METHODS AND RESULTS: In addition to the canonical role of insulin in modulating cardiac metabolic pathways, we found that insulin also inhibited beta adrenergic-induced increases in cardiac contractility...
September 13, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28917234/association-between-complement-component-c3-and-body-composition-a-possible-obesity-inflammatory-biomarker-for-insulin-resistance
#15
Hayder A Al-Domi, Reem M Al Haj Ahmad
BACKGROUND AND OBJECTIVES: The C3 complement component (C3) is increasingly recognized as a cardiometabolic risk factor. We aimed to examine the role of C3 in insulin resistance (IR) and its association with adiposity. METHODS AND STUDY DESIGN: Sixty-seven obese (18-35 years) participants were matched with normal weight participants from the University of Jordan. BMI, waist-hip ratio (WHpR), and waist-height ratio (WHtR) were calculated. Body percent fat mass (%FM) was determined using the bioelectrical impedance analysis...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28916790/association-between-homa-ir-and-lung-function-in-korean-young-adults-based-on-the-korea-national-health-and-nutrition-examination-survey
#16
Young Bok Lee, Young Soo Kim, Dong-Hee Lee, Hee Yeon Kim, Jae-Im Lee, Hyo-Suk Ahn, Tae Seo Sohn, Tae-Kyu Lee, Jae Yen Song, Chang Dong Yeo, Mihee Hong, Kyungdo Han, Seong Cheol Jeong, Hiun Suk Chae
Metabolic syndrome, including obesity and insulin resistance, has been reported to lower lung function in elderly subjects with asthma or chronic obstructive lung disease. This study aimed to find the association between lung function and insulin resistance in Korean young adults. This study used data from the Korean National Health and Nutrition Examination Survey 2011-2013, which is a representative sample of the Korean population. A total of 1,922 young adults aged 19 to 40 were included in the analysis...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916639/small-rna-seq-during-acute-maximal-exercise-reveal-rnas-involved-in-vascular-inflammation-and-cardiometabolic-health
#17
Ravi Shah, Ashish S Yeri, Avash Das, Amanda Courtright-Lim, Olivia Ziegler, Ernest Gervino, Jeffrey Ocel, Pablo Quintero Pinzon, Luke Wooster, Cole Shields Bailey, Kahraman Tanriverdi, Lea Beaulieu, Jane E Freedman, Ionita Ghiran, Gregory D Lewis, Kendall Van Keuren-Jensen, Saumya Das
OBJECTIVE: Exercise improves cardiometabolic and vascular function, though mechanisms remain unclear. Our objective was to demonstrate the diversity of circulating extracellular RNA (ex-RNA) release during acute exercise in humans and its relevance to exercise-mediated benefits on vascular inflammation. Approach and Results: We performed plasma small RNA sequencing (RNA-seq) in 26 individuals undergoing symptom-limited maximal treadmill exercise, with replication of our top candidate miRNA in a separate cohort of 59 individuals undergoing bicycle ergometry...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28915971/genotrophic-effect-of-neurotrophins-restart-of-%C3%AE-cell-regeneration-in-diabetes-mellitus
#18
Mariyana G Hristova
Type 2 diabetes mellitus is an epidemic worldwide and a proved risk factor for cardiovascular complications. In 89% of the cases, it deals, in fact, with metabolic syndrome of multifactorial etiopathogenesis. This paradigm has been generalized by the neurotrophic theory emphasizing the role of hyponeurotrophinemia of key factor. Both type 2 diabetes mellitus and metabolic syndrome are characterized by insulin resistance and pancreatic β-cell damage. Cyclic keeping the fast enhances plasma neurotrophin levels...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915960/pleiotropic-effects-of-metformin-to-rescue-statin-induced-muscle-injury-and-insulin-resistance-a-proposed-mechanism-and-potential-clinical-implications
#19
Nicholas W Carris, Srinivas M Tipparaju, David J Magness, Kalyan C Chapalamadugu, Ronald R Magness
The 2013 American Heart Association Blood Cholesterol Guidelines increased the number of patients recommended for statin therapy in the United States to 56million. Two common statin side effects are muscle pain, referred to as "statin-associated muscle symptoms", and increased risk for new onset type-2-diabetes mellitus. Up to 25% of statin users report muscle symptoms resulting in many patients being switched to lower dose or lower potency statins, or refusing statins altogether. The most likely signaling mechanisms for statin-associated muscle symptoms overlaps with the proposed mechanism of statin-induced insulin resistance...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915943/derivatization-enhanced-separation-and-sensitivity-of-long-chain-free-fatty-acids-application-to-asthma-using-targeted-and-non-targeted-liquid-chromatography-mass-spectrometry-approach
#20
Xiqing Bian, Baoqing Sun, Peiyan Zheng, Na Li, Jian-Lin Wu
Long chain-free fatty acids (LCFFAs) play pivotal roles in various physiological functions, like inflammation, insulin resistance, hypertension, immune cell behavior and other biological activities. However, the detection is obstructed by the low contents, structural diversity, high structural similarity, and matrix interference. Herein, a fast cholamine-derivatization, within 1 min at room temperature, coupled with liquid chromatography-mass spectrometry (LC-MS) approach was developed to determine LCFFAs in complex samples...
October 9, 2017: Analytica Chimica Acta
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