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Inflammation obesity epigenetics

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https://www.readbyqxmd.com/read/28242765/novel-role-for-wnt-inhibitor-apcdd1-in-adipocyte-differentiation-implications-for-diet-induced-obesity
#1
Nicole K H Yiew, Tapan K Chatterjee, Yao Liang Tang, Rod Pellenberg, Brian K Stansfield, Zsolt Bagi, David J Fulton, David W Stepp, Weiqin Chen, Vijay Patel, Vinayak M Kamath, Sheldon E Litwin, David Y Hui, Steven M Rudich, Ha Won Kim, Neal L Weintraub
Impaired adipogenic differentiation during diet-induced obesity (DIO) promotes adipocyte hypertrophy and inflammation, thereby contributing to metabolic disease. Adenomatosis polyposis coli downregulated 1 (APCDD1) has recently been identified as an inhibitor of Wnt signaling, a key regulator of adipogenic differentiation. Here, we report a novel role for APCDD1 in adipogenic differentiation via repression of Wnt signaling, and an epigenetic linkage between miR-130 and APCDD1 in DIO. APCDD1 expression was significantly upregulated in mature adipocytes as compared to undifferentiated preadipocytes in both human and mouse subcutaneous adipose tissues...
February 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28210913/dietary-and-commercialized-fructose-sweet-or-sour
#2
REVIEW
Aslihan Yerlikaya, Tuncay Dagel, Christopher King, Masanari Kubawara, Miguel A Lanaspa, Ana Andres-Hernando, Adrian Covic, Jacek Manitius, Alan A Sag, Mehmet Kanbay
Metabolic syndrome and diabetes are main health problems of modern life in the twenty-first century. Alarming ratios of global prevalence lead to conduct more and more researches about etiological factors and pathogenesis. Disease mechanism is elementary for advancing more efficient and practicable treatment methods. Concurrent increase in both fructose consumption with Western diet and metabolic syndrome has revealed fructose hypothesis that suggests fructose as one of etiological factor of metabolic syndrome (insulin resistance, central obesity, hypertension, etc...
February 16, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28181167/adherence-to-mediterranean-diet-is-associated-with-methylation-changes-in-inflammation-related-genes-in-peripheral-blood-cells
#3
A Arpón, J I Riezu-Boj, F I Milagro, C Razquin, M A Martínez-González, D Corella, R Estruch, R Casas, M Fitó, E Ros, J Salas-Salvadó, J A Martínez
Epigenetic processes, including DNA methylation, might be modulated by environmental factors such as the diet, which in turn have been associated with the onset of several diseases such as obesity or cardiovascular events. Meanwhile, Mediterranean diet (MedDiet) has demonstrated favourable effects on cardiovascular risk, blood pressure, inflammation and other complications related to excessive adiposity. Some of these effects could be mediated by epigenetic modifications. Therefore, the objective of this study was to investigate whether the adherence to MedDiet is associated with changes in the methylation status from peripheral blood cells...
February 8, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28133504/egcg-prevents-high-fat-diet-induced-changes-in-gut-microbiota-decreases-of-dna-strand-breaks-and-changes-in-expression-and-dna-methylation-of-dnmt1-and-mlh1-in-c57bl-6j-male-mice
#4
Marlene Remely, Franziska Ferk, Sonja Sterneder, Tahereh Setayesh, Sylvia Roth, Tatjana Kepcija, Rahil Noorizadeh, Irene Rebhan, Martina Greunz, Johanna Beckmann, Karl-Heinz Wagner, Siegfried Knasmüller, Alexander G Haslberger
Obesity as a multifactorial disorder involves low-grade inflammation, increased reactive oxygen species incidence, gut microbiota aberrations, and epigenetic consequences. Thus, prevention and therapies with epigenetic active antioxidants, (-)-Epigallocatechin-3-gallate (EGCG), are of increasing interest. DNA damage, DNA methylation and gene expression of DNA methyltransferase 1, interleukin 6, and MutL homologue 1 were analyzed in C57BL/6J male mice fed a high-fat diet (HFD) or a control diet (CD) with and without EGCG supplementation...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28090638/late-gestational-intermittent-hypoxia-induces-metabolic-and-epigenetic-changes-in-male-adult-offspring-mice
#5
Abdelnaby Khalyfa, Rene Cortese, Zhuanhong Qiao, Honggang Ye, Riyue Bao, Jorge Andrade, David Gozal
Pregnancy, particularly late gestation, has been associated with a relatively high prevalence of obstructive sleep apnea (OSA). Intermittent hypoxia (IH), a hallmark of OSA, could impose significant long-term effects on somatic growth, energy homeostasis, and metabolic function in offspring. We hypothesized that IH during late pregnancy (LG-IH) may increase the propensity for metabolic dysregulation and obesity in adult offspring via epigenetic modifications. Time-pregnant female C57BL/6 mice were exposed to LG-IH or room air (LG-RA) during days 13-18 of gestation...
January 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28076319/impact-of-nutrition-on-pollutant-toxicity-an-update-with-new-insights-into-epigenetic-regulation
#6
Jessie B Hoffman, Michael C Petriello, Bernhard Hennig
Exposure to environmental pollutants is a global health problem and is associated with the development of many chronic diseases, including cardiovascular disease, diabetes and metabolic syndrome. There is a growing body of evidence that nutrition can both positively and negatively modulate the toxic effects of pollutant exposure. Diets high in proinflammatory fats, such as linoleic acid, can exacerbate pollutant toxicity, whereas diets rich in bioactive and anti-inflammatory food components, including omega-3 fatty acids and polyphenols, can attenuate toxicant-associated inflammation...
March 1, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28061846/map4k4-and-il-6-th17-cells-play-important-roles-in-non-obese-type-2-diabetes
#7
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/28030845/withdrawn-could-some-epigenetic-modifications-hold-the-key-to-opposing-the-metabolic-syndrome
#8
REVIEW
Giovanni Tarantino, Matteo Nicola Di Minno, Carmine Finelli
Ahead of Print article withdrawn by publisher.
December 21, 2016: Oncotarget
https://www.readbyqxmd.com/read/28030376/the-effect-of-obesity-weight-gain-and-weight-loss-on-asthma-inception-and-control
#9
Erick Forno, Juan C Celedón
PURPOSE OF REVIEW: There is ample and growing evidence that obesity increases the risk of asthma and morbidity from asthma. Here, we review recent clinical evidence supporting a causal link between obesity and asthma, and the mechanisms that may lead to 'obese asthma'. RECENT FINDINGS: Although in some children obesity and asthma simply co-occur, those with 'obese asthma' have increased asthma severity, lower quality of life, and reduced medication response. Underlying mechanistic pathways may include anatomical changes of the airways such as obstruction and dysanapsis, systemic inflammation, production of adipokines, impaired glucose-insulin metabolism, altered nutrient levels, genetic and epigenetic changes, and alterations in the airway and/or gut microbiome...
April 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27989961/role-of-mineralocorticoid-receptor-activation-in-cardiac-diastolic-dysfunction
#10
REVIEW
Guanghong Jia, Yan Jia, James R Sowers
The prevalence of cardiac diastolic dysfunction and heart failure with preserved ejection, a major cause of morbidity and mortality in the western world, is increasing due, in part, to increases in obesity and type 2 diabetes. Characteristics of cardiac diastolic dysfunction include increased myocardial stiffness and impaired left ventricular (LV) relaxation that is characterized by prolonged isovolumic LV relaxation and slow LV filling. Obesity, insulin resistance and type 2 diabetes, especially in females promote activation of mineralocorticoid receptor (MR) signaling with resultant increases in oxidative stress, maladaptive immune responses, inflammation, and impairment of coronary blood flow and cardiac interstitial fibrosis...
October 28, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27921043/metabolic-vascular-syndrome-new-insights-into-a-multidimensional-network-of-risk-factors-and-diseases
#11
REVIEW
Gerhard H Scholz, Markolf Hanefeld
BACKGROUND: Since 1981, we have used the term metabolic syndrome to describe an association of a dysregulation in lipid metabolism (high triglycerides, low high-density lipoprotein cholesterol, disturbed glucose homeostasis (enhanced fasting and/or prandial glucose), gout, and hypertension), with android obesity being based on a common soil (overnutrition, reduced physical activity, sociocultural factors, and genetic predisposition). We hypothesized that main traits of the syndrome occur early and are tightly connected with hyperinsulinemia/insulin resistance, procoagulation, and cardiovascular diseases...
October 2016: Visceral Medicine
https://www.readbyqxmd.com/read/27889327/epigenetics-in-non-alcoholic-fatty-liver-disease
#12
REVIEW
Jooho Lee, Yuri Kim, Simonetta Friso, Sang-Woon Choi
Non-alcoholic fatty liver disease (NAFLD), a common hepatic disorder ranging from simple steatosis through steatohepatitis to fibrosis and cirrhosis, is an emerging health concern. NAFLD is a pathologic condition characterized by the buildup of extra fat in liver cells that is not caused by alcohol consumption. Excess hepatic fat accumulation results from increased delivery of triglycerides (TG) to the liver or conversion of surplus carbohydrates to TG. Importantly, a subgroup of NAFLD results in hepatocellular injury and inflammation, which is referred to as non-alcoholic steatohepatitis (NASH), and may progress to irreversible cirrhosis and hepatocellular carcinoma (HCC)...
November 23, 2016: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/27882346/epigenetic-regulation-of-macrophage-polarization-and-inflammation-by-dna-methylation-in-obesity
#13
Xianfeng Wang, Qiang Cao, Liqing Yu, Huidong Shi, Bingzhong Xue, Hang Shi
Obesity is associated with increased classically activated M1 adipose tissue macrophages (ATMs) and decreased alternatively activated M2 ATMs, both of which contribute to obesity-induced inflammation and insulin resistance. However, the underlying mechanism remains unclear. We find that inhibiting DNA methylation pharmacologically using 5-aza-2'-deoxycytidine or genetically by DNA methyltransferase 1 (DNMT1) deletion promotes alternative activation and suppresses inflammation in macrophages. Consistently, mice with myeloid DNMT1 deficiency exhibit enhanced macrophage alternative activation, suppressed macrophage inflammation, and are protected from obesity-induced inflammation and insulin resistance...
November 17, 2016: JCI Insight
https://www.readbyqxmd.com/read/27800025/histone-macroh2a1-2-promotes-metabolic-health-and-leanness-by-inhibiting-adipogenesis
#14
Valerio Pazienza, Concetta Panebianco, Francesca Rappa, Domenico Memoli, Michela Borghesan, Sara Cannito, Asami Oji, Giuseppe Mazza, Domenico Tamburrino, Giuseppe Fusai, Rosario Barone, Giulia Bolasco, Francesc Villarroya, Joan Villarroya, Kiyotaka Hatsuzawa, Francesco Cappello, Roberta Tarallo, Tomoko Nakanishi, Manlio Vinciguerra
BACKGROUND: Obesity has tremendous impact on the health systems. Its epigenetic bases are unclear. MacroH2A1 is a variant of histone H2A, present in two alternatively exon-spliced isoforms macroH2A1.1 and macroH2A1.2, regulating cell plasticity and proliferation, during pluripotency and tumorigenesis. Their role in adipose tissue plasticity is unknown. RESULTS: Here, we show evidence that macroH2A1.1 protein levels in the visceral adipose tissue of obese humans positively correlate with BMI, while macroH2A1...
2016: Epigenetics & Chromatin
https://www.readbyqxmd.com/read/27792161/maternal-dietary-vitamin-d-does-not-program-systemic-inflammation-and-bone-health-in-adult-female-mice-fed-an-obesogenic-diet
#15
Christopher R Villa, Jianmin Chen, Bijun Wen, Sandra M Sacco, Amel Taibi, Wendy E Ward, Elena M Comelli
Obesity is associated with systemic inflammation and impaired bone health. Vitamin D regulates bone metabolism, and has anti-inflammatory properties and epigenetic effects. We showed that exposure to high dietary vitamin D during pregnancy and lactation beneficially programs serum concentration of lipopolysaccharide (LPS) and bone structure in male offspring fed an obesogenic diet. Here we assessed if this effect is also apparent in females. C57BL/6J dams were fed AIN93G diet with high (5000 IU/kg diet) or low (25 IU/kg diet) vitamin D during pregnancy and lactation...
October 26, 2016: Nutrients
https://www.readbyqxmd.com/read/27753812/ssa-04-3-leptin-adiponectin-in-cardiometabolic-disease
#16
Patricio Lopez-Jaramillo
Cardiovascular diseases (CVD) are major causes of death and illness worldwide. In recent decades an increased prevalence of CVD mortality has been reported in low-medium income countries, which has been associated with changes in life styles, deficiencies in health systems and the persistence of social inequities.The metabolic syndrome comprises a cluster of cardiometabolic risk factors, with insulin resistance and increased adiposity as its central features. Identifying individuals with metabolic syndrome is important due to its association with an increased risk of coronary heart disease and type 2 diabetes mellitus (DM2)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27750242/clinical-significance-of-epigenetic-alterations-in-human-hepatocellular-carcinoma-and-its-association-with-genetic-mutations
#17
REVIEW
Naoshi Nishida, Masatoshi Kudo
Accumulation of genetic and epigenetic alterations is a hallmark of cancer genomes, including those in hepatocellular carcinoma (HCC). Particularly, in human HCC, epigenetic changes are more frequently observed than genetic changes in a variety of cancer-related genes, suggesting a potential role for epigenetic alterations during hepatocarcinogenesis. Several environmental factors, such as inflammation, obesity, and steatosis, are reported to affect the epigenetic status in hepatocytes, which could play a role in HCC development...
2016: Digestive Diseases
https://www.readbyqxmd.com/read/27732903/fatty-acid-mediated-hypothalamic-inflammation-and-epigenetic-programming
#18
REVIEW
Helena C Cesar, Luciana Pellegrini Pisani
A high-fat diet is the main environmental cue that has been studied in the hypothalamus since the discovery of its connection with hypothalamic inflammation. Current evidence shows hypothalamic inflammation as a likely mechanism for the dysregulation on the homeostatic control of energy balance, which leads to metabolic alterations and obesity. Although this mechanism seems to be reversible when set during adulthood, we argue whether dietary fatty acids, during critical periods of development, could affect hypothalamic function permanently and set an increased susceptibility to obesity...
April 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/27703805/role-of-gut-microbiota-in-the-aetiology-of-obesity-proposed-mechanisms-and-review-of-the-literature
#19
REVIEW
Muhammad Jaffar Khan, Konstantinos Gerasimidis, Christine Ann Edwards, M Guftar Shaikh
The aetiology of obesity has been attributed to several factors (environmental, dietary, lifestyle, host, and genetic factors); however none of these fully explain the increase in the prevalence of obesity worldwide. Gut microbiota located at the interface of host and environment in the gut are a new area of research being explored to explain the excess accumulation of energy in obese individuals and may be a potential target for therapeutic manipulation to reduce host energy storage. Several mechanisms have been suggested to explain the role of gut microbiota in the aetiology of obesity such as short chain fatty acid production, stimulation of hormones, chronic low-grade inflammation, lipoprotein and bile acid metabolism, and increased endocannabinoid receptor system tone...
2016: Journal of Obesity
https://www.readbyqxmd.com/read/27703587/an-updated-mini-review-of-vitamin-d-and-obesity-adipogenesis-and-inflammation-state
#20
Zujaja-Tul-Noor Hamid Mehmood, Dimitrios Papandreou
Vitamin D related research continues to expand and theorise regarding its involvement in obesity, as both hypovitaminosis D and obesity strike in pandemic proportions. Vitamin D plays an important role in immune system through Vitamin D Receptors (VDR), which are transcription factors located abundantly in the body. Due to this characteristic, it is potentially linked to obesity, which is a state of inflammation involving the release of cytokines from adipose tissue, and exerting stress on other organs in a state of positive energy balance...
September 15, 2016: Open Access Macedonian Journal of Medical Sciences
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