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Inflammation obesity

Lingling He, Xiaoli Liu, Lijia Wang, Zhiyun Yang
The findings regarding the effects of thiazolidinediones (TZDs) in nonalcoholic steatohepatitis (NASH) patients have been inconsistent, and the assessment of different clinical variables for evaluating the effects of TZDs confound a direct comparison of the results of different randomized clinical trials (RCTs), especially with regard to lifestyle changes. In this paper, we performed a meta-analysis of randomized controlled trials to clarify the effects of TZD treatment with and without lifestyle changes on histological markers of NASH and clinical variables related to insulin resistance (IR), hyperlipidemia, and obesity...
October 2016: Medicine (Baltimore)
Farag E Salama, Qasem A Anass, Abdelnaem A Abdelrahman, Elsayed B Saeed
Cardiovascular disease is the leading cause of morbidity and mortality in patients with chronic kidney disease (CKD). The carotid intima-media thickness (CIMT) and arterial stiffness are useful markers of subclinical atherosclerosis and significantly correlate with various metabolic risk factors. Chemerin is one of the adipokines that may represent a link between obesity and inflammation and may be a potential candidate playing a role in the pathogenesis of atherosclerosis and cardiovascular complications. Therefore, we studied the relationship of chemerin levels with atherosclerosis as measured by CIMT in diabetic CKD patients, either predialysis or on hemodialysis (HD)...
September 2016: Saudi Journal of Kidney Diseases and Transplantation
S A Yuca, E A Cimbek, Y Şen, O Güvenç, H Vatansev, F Buğrul, F Gün, B Oran
Objective: Childhood obesity which is a predictor of adulthood obesity is associated with type 2 diabetes, metabolic syndrome, dyslipidemia, coronary artery diseases and subclinical inflammation. Growth differentiation factor-15, also known as macrophage inhibitory cytokine-1 (MIC-1/GDF15) is a member of the transforming growth factor- β super family and increases during inflammatory states. Adults with obesity have increased serum concentrations of MIC-1/GDF15. MIC-1/GDF15 is associated with cardio metabolic risk in adults...
October 17, 2016: Experimental and Clinical Endocrinology & Diabetes
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
Ligia J Dominguez, Mario Barbagallo
PURPOSE OF REVIEW: Physical and cognitive frailty are interrelated and synergistic syndromes more frequently seen in old age, which represent intermediate stages between aging successfully and disability. Poor nutrition is a fundamental determinant for both conditions, while various dietary components are proposed to prevent and/or improve them. This updated review discusses the possible influence of nutritional factors on cognitive frailty and its potential mediators. RECENT FINDINGS: Oxidative stress, low-grade systemic inflammation, neuroinflammation, and altered autophagy, all associated with obesity, metabolic syndrome and insulin resistance, are proposed mechanisms to explain the influence of nutrition on cognitive health...
September 28, 2016: Current Opinion in Clinical Nutrition and Metabolic Care
D Löffler, K Landgraf, D Rockstroh, J T Schwartze, H Dunzendorfer, W Kiess, A Körner
BACKGROUND: Meteorin-like (METRNL) is a recently described circulating protein shown to be highly expressed in white adipose tissue and to beneficially affect energy metabolism in mice. OBJECTIVE: We systematically evaluated the role of METRNL for human adipogenesis and its association with obesity, browning and hyperinsulinemia in children. In addition, we assessed the functional relevance of METRNL for human adipogenesis. RESULTS: METRNL expression decreased during human adipocyte differentiation in vitro...
October 17, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Domenico Maurizio Toraldo, Michele De Benedetto, Luana Conte, Francesco De Nuccio
Obstructive sleep apnea (OSA) is characterized by repetitive interruptions of breathing, causing a Chronic Intermittent Hypoxia (CIH) that can be a key step in the development and progression of cardiovascular diseases. Nowadays, in fact, there is scientific evidence showing the close relationship between OSA and atherosclerosis, even in those patients who do not show co-morbidities such as hypertension, diabetes, high levels of low-density lipoprotein (LDL), cigarette smoking and obesity, which normally are able to activate the endothelium...
October 7, 2016: Current Vascular Pharmacology
Jonathan D Teo, Margaret J Morris, Nicole M Jones
OBJECTIVE: In humans, maternal obesity is associated with an increase in the incidence of birth related difficulties. However, the impact of maternal obesity on the severity of brain injury in offspring is not known. Recent studies have found evidence of increased glial response and inflammatory mediators in the brains as a result of obesity in humans and rodents. We hypothesised that hypoxic-ischaemic (HI) brain injury is greater in neonatal offspring from obese rat mothers compared to lean controls...
October 13, 2016: Brain, Behavior, and Immunity
Min Zhang, Zhongqi Zhou, Jinguang Wang, Shufa Li
Inflammatory pathways play an important role in impaired glucose metabolism and insulin production. Adipose tissue inflammation is characterized by infiltration and expansion of macrophages, leading to type 2 diabetes (T2D). Macrophage polarization contributes to various inflammatory responses and cytokine production profiles. MiR-130b is involved in regulating immune response and metabolism. However, the specific role in macrophage polarization and glucose metabolism of T2D has not been reported. In this study, C57BL/6 mice were fed a high-fat diet to induce T2D mice model...
October 13, 2016: Immunology Letters
A J Cox, P Zhang, D W Bowden, B Devereaux, P M Davoren, A W Cripps, N P West
AIM: Relationships between the intestinal microbiota, intestinal permeability and inflammation in the context of risk for obesity-associated disease continue to be of interest. The aim of the study was to examine the associations between intestinal permeability and type 2 diabetes (T2D). METHODS: A total of 130 individuals with T2D (age: 57.5±6.2 years (mean±SD); BMI: 30.4±3.2; 45% female) and 161 individuals without T2D (age: 37.4±12.5 years; BMI: 25.1±3.9; 65% female) were included in the study...
October 10, 2016: Diabetes & Metabolism
Patricia D Freitas, Palmira G Ferreira, Aline G Silva, Rafael Stelmach, Regina M Carvalho-Pinto, Frederico L A Fernandes, Marcio C Mancini, Maria N Sato, Milton A Martins, Celso R F Carvalho
RATIONALE: Clinical control is difficult to achieve in obese patients with asthma. Bariatric surgery has been recommended for weight-loss and to improve asthma control; however, the benefits of nonsurgical interventions have been poorly investigated. OBJECTIVE: To examine the effect of exercise training in a weight-loss program on asthma control, quality of life, inflammatory biomarkers and lung function. METHODS: Fifty-five obese patients with asthma were randomly assigned to either a weight-loss program + exercise (WL+E group, n=28) or a weight-loss program + sham (WL+S group, n=27) group, where the weight-loss program included nutrition (caloric restriction) and psychological therapies...
July 19, 2016: American Journal of Respiratory and Critical Care Medicine
V A Macht, M Vazquez, C Petyak, C A Grillo, K Kaigler, R T Enos, J L McClellan, T L Cranford, E A Murphy, J F Nyland, G Solomon, A Gertler, M A Wilson, L P Reagan
There is a growing appreciation that the complications of obesity extend to the central nervous system (CNS) and include increased risk for development of neuropsychiatric co-morbidities such as depressive illness. The neurological consequences of obesity may develop as a continuum and involve a progression of pathological features which is initiated by leptin resistance. Leptin resistance is a hallmark feature of obesity, but it is unknown whether leptin resistance or blockage of leptin action is casually linked to the neurological changes which underlie depressive-like phenotypes...
October 12, 2016: Brain, Behavior, and Immunity
Nina Braun, Claus Hoess, Alexander Kutz, Mirjam Christ-Crain, Robert Thomann, Christoph Henzen, Werner Zimmerli, Beat Mueller, Philipp Schuetz
OBJECTIVE: Positive associations between body mass index (BMI) and clinical outcomes have been found and are called "the obesity survival paradox." However, whether obesity has protective effects or if this paradox is because of confounding remains unclear. Herein, we analyzed the effects of weight on long-term mortality in a large cohort of patients with community-acquired pneumonia (CAP) and investigated whether the differential effects of obesity on inflammation pathways accounted for mortality differences...
August 9, 2016: Nutrition
Yu-Shu Huang, Christian Guilleminault, Fang-Ming Hwang, Chuan Cheng, Cheng-Hui Lin, Hsueh-Yu Li, Li-Ang Lee
Pediatric obstructive sleep apnea (OSA) is associated with chronic systemic inflammation and with cognitive impairments. This study aimed to investigate the status of proinflammatory cytokines, particularly interleukin 17 (IL-17) and interleukin 23 (IL-23) and cognition in pediatric OSA.Controls and OSA children participated in the study. Exclusion criteria were adenotonsillectomy, heart, neurological and severe psychiatric diseases, craniofacial syndromes, and obesity. Polysomnogram was followed by serum testing for inflammatory markers and neurocognitive tests such as continuous performance task (CPT) and Wisconsin card sorting test, questionnaires, analyses of plasma high-sensitivity C-reactive protein (HS-CRP), tumor necrosis factor alpha (TNF-α), interleukin 1 (IL-1), interleukin 6 (IL-6), IL-17, and IL-23...
October 2016: Medicine (Baltimore)
Jeffrey K Wickliffe, Stephen D Dertinger, Dorothea K Torous, Svetlana L Avlasevich, Bridget R Simon-Friedt, Mark J Wilson
Obesity increases the risk of a number of chronic diseases in humans including several cancers. Biological mechanisms responsible for such increased risks are not well understood at present. Increases in systemic inflammation and oxidative stress, endogenous production of mutagenic metabolites, altered signaling in proliferative pathways, and increased sensitivity to exogenous mutagens and carcinogens are some of the potential contributing factors. We hypothesize that obesity creates an endogenously mutagenic environment in addition to increasing the sensitivity to environmental mutagens...
October 14, 2016: Environmental and Molecular Mutagenesis
Valeriy A Poroyko, Alba Carreras, Abdelnaby Khalyfa, Ahamed A Khalyfa, Vanessa Leone, Eduard Peris, Isaac Almendros, Alex Gileles-Hillel, Zhuanhong Qiao, Nathaniel Hubert, Ramon Farré, Eugene B Chang, David Gozal
Chronic sleep fragmentation (SF) commonly occurs in human populations, and although it does not involve circadian shifts or sleep deprivation, it markedly alters feeding behaviors ultimately promoting obesity and insulin resistance. These symptoms are known to be related to the host gut microbiota. Mice were exposed to SF for 4 weeks and then allowed to recover for 2 weeks. Taxonomic profiles of fecal microbiota were obtained prospectively, and conventionalization experiments were performed in germ-free mice...
October 14, 2016: Scientific Reports
E M Ribe, S Lovestone
As populations across the world both age and become more obese, the numbers of individuals with Alzheimer's disease and diabetes are increasing; posing enormous challenges for society and consequently becoming priorities for governments and global organizations. These issues, an ageing population at risk of neurodegenerative diseases such as Alzheimer's disease and an increasingly obese population at risk of metabolic alterations such as type 2 diabetes, are usually considered as independent conditions, but increasing evidence from both epidemiological and molecular studies link these disorders...
October 14, 2016: Journal of Internal Medicine
Tatiana Moro, Grant Tinsley, Antonino Bianco, Giuseppe Marcolin, Quirico Francesco Pacelli, Giuseppe Battaglia, Antonio Palma, Paulo Gentil, Marco Neri, Antonio Paoli
BACKGROUND: Intermittent fasting (IF) is an increasingly popular dietary approach used for weight loss and overall health. While there is an increasing body of evidence demonstrating beneficial effects of IF on blood lipids and other health outcomes in the overweight and obese, limited data are available about the effect of IF in athletes. Thus, the present study sought to investigate the effects of a modified IF protocol (i.e. time-restricted feeding) during resistance training in healthy resistance-trained males...
October 13, 2016: Journal of Translational Medicine
Youngjoo Lee, Jiyeon Kim, Jinho An, Sungwon Lee, Heetae Lee, Hyunseok Kong, Youngcheon Song, Hye Ran Choi, Ji-Wung Kwon, Daekeun Shin, Chong-Kil Lee, Kyungjae Kim
Hyperlipidemia, which is closely associated with a fatty diet and aging, is commonly observed in the western and aged society. Therefore, a novel therapeutic approach for this disease is critical, and an immunological view has been suggested as a novel strategy, because hyperlipidemia is closely associated with inflammation and immune dysfunction. In this study, the effects of an aqueous extract of Rubus occidentalis (RO) in obese mice were investigated using immunological indexes. The mice were fed a high-fat diet (HFD) to induce hyperlipidemia, which was confirmed by biochemical analysis and examination of the mouse physiology...
October 17, 2016: Biomolecules & Therapeutics
Bernardo Sousa-Pinto, Laura Gonçalves, Adriana R Rodrigues, Inês Tomada, Henrique Almeida, Delminda Neves, Alexandra M Gouveia
Transforming growth factor beta (TGF-β) plays an important role in the pathogenesis of obesity, influencing the release of inflammation mediators and promoting remodeling and collagen deposition in the adipose tissue (AT). In this context, this work aims to elucidate whether TGF-β and Smad-dependent or Smad-independent signaling pathways contribute to regional differentiation of AT in high-fat diet (HFD) and energy-restricted (ER) rat models. For this, TGF-β, TGF-β receptors I and II, PAI-1 and GLUT4 mRNA levels were quantified by real-time PCR, and western blotting assays allowed the semiquantification of TGF-β and proteins from Smad3, ERK1/2 and Akt signaling pathways in subcutaneous and visceral (epididymal, retroperitoneal and mesenteric) fat depots from control, HFD and ER-treated rats...
August 26, 2016: Journal of Nutritional Biochemistry
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