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Inflammation obesity epigenetics

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https://www.readbyqxmd.com/read/28613268/vitamin-e-modifies-high-fat-diet-induced-increase-of-dna-strand-breaks-and-changes-in-expression-and-dna-methylation-of-dnmt1-and-mlh1-in-c57bl-6j-male-mice
#1
Marlene Remely, Franziska Ferk, Sonja Sterneder, Tahereh Setayesh, Tatjana Kepcija, Sylvia Roth, Rahil Noorizadeh, Martina Greunz, Irene Rebhan, Karl-Heinz Wagner, Siegfried Knasmüller, Alexander Haslberger
Obesity is associated with low-grade inflammation, increased ROS production and DNA damage. Supplementation with antioxidants might ameliorate DNA damage and support epigenetic regulation of DNA repair. C57BL/6J male mice were fed a high-fat (HFD) or a control diet (CD) with and without vitamin E supplementation (4.5 mg/kg body weight (b.w.)) for four months. DNA damage, DNA promoter methylation and gene expression of Dnmt1 and a DNA repair gene (MLH1) were assayed in liver and colon. The HFD resulted in organ specific changes in DNA damage, the epigenetically important Dnmt1 gene, and the DNA repair gene MLH1...
June 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28595943/a-role-for-g-protein-coupled-estrogen-receptor-gper-in-estrogen-induced-carcinogenesis-dysregulated-glandular-homeostasis-survival-and-metastasis
#2
REVIEW
Edward J Filardo
Mechanisms of carcinogenesis by estrogen center on its mitogenic and genotoxic potential on tumor target cells. These models suggest that estrogen receptor (ER) signaling promotes expansion of the transformed population and that subsequent accumulation of somatic mutations that drive cancer progression occur via metabolic activation of cathecol estrogens or by epigenetic mechanisms. Recent findings that GPER is linked to obesity, vascular pathology and immunosuppression, key events in the development of metabolic syndrome and intra-tissular estrogen synthesis, provides an alternate view of estrogen-induced carcinogenesis...
June 5, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28594107/mirnas-in-nutrition-obesity-and-cancer-the-biology-of-mirnas-in-metabolic-disorders-and-its-relationship-with-cancer-development
#3
Verónica Del Carmen Martínez-Jiménez, Alejandro Méndez-Mancilla, Diana Patricia Portales-Pérez
SCOPE: The scope of this review is to explain how metabolic disorders originated by a deficient nutrition can develop into a neoplasic process by the alteration of epigenetic mechanisms like miRNAs. Obesity is a proinflammatory state with a wide impact on health around the world that is associated with neoplastic diseases. Epigenetic mechanisms have a central role in the obesogenic environment, which participates on the development of comorbidities such as cancer. METHODS AND RESULTS: We made an exhaustive review of the most recent reports about metabolic disorders with nutrition and their relationship with miRNAs, and their risk of developing into oncogenic processes...
June 8, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28580850/-advances-in-the-pathogenesis-of-non-alcoholic-fatty-liver-disease
#4
Alajos Pár, Gabriella Pár
Non alcoholic fatty liver disease is the hepatic manifestation of metabolic syndrome, and the most common liver disease. Its more aggressive form is the non alcoholic steatohepatitis. Multiple genetic and environmental factors lead to the accumulation of triglicerides and the inflammatory cascade. High fat diet, obesity, adipocyte dysfunction with cytokine production, insulin resistance and increased lipolysis with free fatty acid flux into the liver - all are the drivers of liver cell injury. Activation of inflammasome by damage- or pathogen-associated molecular patterns results in "steril inflammation" and immune response, while the hepatic stellate cells and progenitor cells lead to fibrogenesis...
June 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28545587/type-2-diabetes-and-obesity-induce-similar-transcriptional-reprogramming-in-human-myocytes
#5
Leif Väremo, Tora Ida Henriksen, Camilla Scheele, Christa Broholm, Maria Pedersen, Mathias Uhlén, Bente Klarlund Pedersen, Jens Nielsen
BACKGROUND: Skeletal muscle is one of the primary tissues involved in the development of type 2 diabetes (T2D). The close association between obesity and T2D makes it difficult to isolate specific effects attributed to the disease alone. Therefore, here we set out to identify and characterize intrinsic properties of myocytes, associated independently with T2D or obesity. METHODS: We generated and analyzed RNA-seq data from primary differentiated myotubes from 24 human subjects, using a factorial design (healthy/T2D and non-obese/obese), to determine the influence of each specific factor on genome-wide transcription...
May 25, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28465145/energy-sensing-pathways-bridging-type-2-diabetes-and-colorectal-cancer
#6
REVIEW
Juhong Yang, Reiko Nishihara, Xuehong Zhang, Shuji Ogino, Zhi Rong Qian
The recently rapid increase of obesity and type 2 diabetes mellitus has caused great burden to our society. A positive association between type 2 diabetes and risk of colorectal cancer has been reported by increasing epidemiological studies. The molecular mechanism of this connection remains elusive. However, type 2 diabetes may result in abnormal carbohydrate and lipid metabolism, high levels of circulating insulin, insulin growth factor-1, and adipocytokines, as well as chronic inflammation. All these factors could lead to the alteration of energy sensing pathways such as the AMP activated kinase (PRKA), mechanistic (mammalian) target of rapamycin (mTOR), SIRT1, and autophagy signaling pathways...
April 13, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28414763/enhanced-offspring-predisposition-to-steatohepatitis-with-maternal-high-fat-diet-is-associated-with-epigenetic-and-microbiome-alterations
#7
Umesh D Wankhade, Ying Zhong, Ping Kang, Maria Alfaro, Sree V Chintapalli, Keshari M Thakali, Kartik Shankar
OBJECTIVE: Non-alcoholic fatty liver disease (NAFLD) is an important co-morbidity associated with obesity and a precursor to steatohepatitis. However, the contributions of gestational and early life influences on development of NAFLD and NASH remain poorly appreciated. METHODS: Two independent studies were performed to examine whether maternal over-nutrition via exposure to high fat diet (HFD) leads to exacerbated hepatic responses to post-natal HFD and methionine choline deficient (MCD) diets in the offspring...
2017: PloS One
https://www.readbyqxmd.com/read/28410138/clinical-functional-behavioural-and-epigenomic-biomarkers-of-obesity
#8
Claudio L Lafortuna, Armando R Tovar, Fabio Rastelli, Sarah A Tabozzi, Martina Caramenti, Ximena Orozco-Ruiz, Miriam Aguilar-Lopez, Martha Guevara-Cruz, Azalia Avila-Nava, Nimbe Torres, Gloria Bertoli
Overweight and obesity are highly prevalent conditions worldwide, linked to an increased risk for death, disability and disease due to metabolic and biochemical abnormalities affecting the biological human system throughout different domains. Biomarkers, defined as indicators of biological processes in health and disease, relevant for body mass excess management have been identified according to different criteria, including anthropometric and molecular indexes, as well as physiological and behavioural aspects...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28386478/changes-in-the-microrna-profile-observed-in-the-subcutaneous-adipose-tissue-of-obese-patients-after-laparoscopic-adjustable-gastric-banding
#9
Carmela Nardelli, Laura Iaffaldano, Vincenzo Pilone, Giuseppe Labruna, Maddalena Ferrigno, Nicola Carlomagno, Concetta Anna Dodaro, Pietro Forestieri, Pasqualina Buono, Francesco Salvatore, Lucia Sacchetti
Background. Laparoscopic adjustable gastric banding (LAGB) results in significant lasting weight loss and improved metabolism in obese patients. To evaluate whether epigenetic factors could concur to these benefits, we investigated the subcutaneous adipose tissue (SAT) microRNA (miRNA) profile before (T0) and three years (T1) after LAGB in three morbidly obese women. Case Reports. SAT miRNA profiling, evaluated by TaqMan Array, showed four downexpressed (miR-519d, miR-299-5p, miR-212, and miR-671-3p) and two upexpressed (miR-370 and miR-487a) miRNAs at T1 versus T0...
2017: Journal of Obesity
https://www.readbyqxmd.com/read/28242765/a-novel-role-for-the-wnt-inhibitor-apcdd1-in-adipocyte-differentiation-implications-for-diet-induced-obesity
#10
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 down-regulated 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 up-regulated in mature adipocytes compared with undifferentiated preadipocytes in both human and mouse subcutaneous adipose tissues...
April 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28210913/dietary-and-commercialized-fructose-sweet-or-sour
#11
REVIEW
Aslihan Yerlikaya, Tuncay Dagel, Christopher King, Masanari Kuwabara, 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
#12
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
#13
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
#14
Abdelnaby Khalyfa, Rene Cortese, Zhuanhong Qiao, Honggang Ye, Riyue Bao, Jorge Andrade, David Gozal
KEY POINTS: Late gestation during pregnancy has been associated with a relatively high prevalence of obstructive sleep apnoea (OSA). Intermittent hypoxia, a hallmark of OSA, could impose significant long-term effects on somatic growth, energy homeostasis and metabolic function in offspring. Here we show that late gestation intermittent hypoxia induces metabolic dysfunction as reflected by increased body weight and adiposity index in adult male offspring that is paralleled by epigenomic alterations and inflammation in visceral white adipose tissue...
April 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
#15
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
#16
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
#17
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
#18
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
#19
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...
August 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27921043/metabolic-vascular-syndrome-new-insights-into-a-multidimensional-network-of-risk-factors-and-diseases
#20
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
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