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https://www.readbyqxmd.com/read/28108608/macrophage-proliferation-sustains-adipose-tissue-inflammation-in-formerly-obese-mice
#1
Brian F Zamarron, Taleen A Mergian, Kae Won Cho, Gabriel Martinez-Santibanez, Danny Luan, Kanakadurga Singer, Jennifer L DelProposto, Lynn M Geletka, Lindsey A Muir, Carey N Lumeng
Obesity causes dramatic proinflammatory changes in the adipose tissue immune environment, but relatively little is known regarding how this inflammation responds to weight loss (WL). To understand the mechanisms by which meta-inflammation resolves during WL, we examined adipose tissue leukocytes in mice after withdrawal of a high-fat diet. After 8 weeks of WL, mice achieved similar weights and glucose tolerance values as age-matched lean controls but showed abnormal insulin tolerance. Despite fat mass normalization, total and CD11c(+) adipose tissue macrophage (ATM) content remained elevated in WL mice for up to 6 months and was associated with persistent fibrosis in adipose tissue...
February 2017: Diabetes
https://www.readbyqxmd.com/read/28091645/yogurt-inhibits-intestinal-barrier-dysfunction-in-caco-2-cells-by-increasing-tight-junctions
#2
Kelley K Putt, Ruisong Pei, Heather M White, Bradley W Bolling
Chronic inflammation disrupts intestinal barrier function and may contribute to the pathology of obesity and other diseases. The goal of this study was to determine the mechanism by which yogurt improves intestinal barrier function. Caco-2 cells were differentiated on Transwell inserts and used as a model of intestinal barrier permeability. Transepithelial electrical resistance (TEER) and flux of 4 kDa fluorescein isothiocyanate-dextran (FD) and lucifer yellow (LY) were used as indicators of monolayer integrity and paracellular permeability...
January 16, 2017: Food & Function
https://www.readbyqxmd.com/read/28089867/attenuation-of-obesity-induced-inflammation-in-mice-orally-administered-with-salmon-cartilage-proteoglycan-a-prophylactic-agent
#3
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/28086768/probiotic-mixture-improves-fatty-liver-disease-by-virtue-of-its-action-on-lipid-profiles-leptin-and-inflammatory-biomarkers
#4
Hessah Mohammed Al-Muzafar, Kamal Adel Amin
BACKGROUND: A high fat diet has an essential role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). This condition is characterized by hepatic fat accumulation (steatosis) and is associated with obesity, diabetes, and fibrosis or cirrhosis of the liver. Probiotics may be useful in the treatment of steatosis. This study examined the effects of an ingested probiotic formulation on the lipid profiles, liver functions, leptin levels, and inflammatory marker levels of rats with NAFLD that had been induced via high fat and sucrose diet (HFSD)...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28077838/low-grade-metabolically-induced-inflammation-mediators-interleukin-6-adiponectin-and-tnf-%C3%AE-serum-levels-in-obese-pregnant-patients-in-the-perinatal-period
#5
Malgorzata Zembala-Szczerba, Andrzej Jaworowski, Hubert Huras, Dorota Babczyk, Robert Jach
BACKGROUND Obesity is a major clinical problem. The number of obese pregnant women is rising rapidly. The consequences of obesity are significant and affect every aspect of perinatal care for both the mother and the developing fetus. Adipose tissue may be responsible for chronic subclinical inflammation in obesity, being a source of inflammatory mediators. The study was designed to evaluate the analysis of the serum concentration of inflammatory mediators, including interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and adiponectin, in obese pregnant women at full-term pregnancies...
January 12, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28076453/ferulic-acid-lowers-body-weight-and-visceral-fat-accumulation-via-modulation-of-enzymatic-hormonal-and-inflammatory-changes-in-a-mouse-model-of-high-fat-diet-induced-obesity
#6
T S de Melo, P R Lima, K M M B Carvalho, T M Fontenele, F R N Solon, A R Tomé, T L G de Lemos, S G da Cruz Fonseca, F A Santos, V S Rao, M G R de Queiroz
Previous studies have reported on the glucose and lipid-lowering effects of ferulic acid (FA) but its anti-obesity potential has not yet been firmly established. This study investigated the possible anti-obesitogenic effects of FA in mice fed a high-fat diet (HFD) for 15 weeks. To assess the antiobesity potential of FA, 32 male Swiss mice, weighing 20-25 g (n=6-8 per group) were fed a normal diet (ND) or HFD, treated orally or not with either FA (10 mg/kg) or sibutramine (10 mg/kg) for 15 weeks and at the end of this period, the body weights of animals, visceral fat accumulation, plasma levels of glucose and insulin hormone, amylase and lipase activities, the satiety hormones ghrelin and leptin, and tumor necrosis factor-α (TNF-α) and monocyte chemoattractant protein-1 (MCH-1) were analyzed...
January 5, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28074058/intracellular-atp-in-balance-of-pro-and-anti-inflammatory-cytokines-in-adipose-tissue-with-and-without-tissue-expansion
#7
J H Lee, Y Zhang, Z Zhao, X Ye, X Zhang, H Wang, J Ye
OBJECTIVES: To understand the mechanism of white fat expansion in the presence of inflammation, we examined the balance of pro- and anti-inflammatory cytokines in epididymal fat during weight gain in DIO mice. METHODS: The pro- and anti-inflammatory cytokines were examined in white fat of diet-induced obese mice and lean mice. The mechanism of gene expression was investigated with a focus on intracellular ATP (iATP). ATP activity was tested in cellular and non-cellular systems in activation of serine kinases (IKKβ, JNK and ERK)...
January 11, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28073685/obesity-is-the-main-determinant-of-insulin-resistance-more-than-the-circulating-pro-inflammatory-cytokines-levels-in-rheumatoid-arthritis-patients
#8
Jesus Castillo-Hernandez, Martha Imelda Maldonado-Cervantes, Juan Pablo Reyes, Nuria Patiño-Marin, Enrique Maldonado-Cervantes, Claudia Solorzano-Rodriguez, Esperanza de la Cruz Mendoza, Brenda Alvarado-Sanchez
BACKGROUND: Systemic blockade of TNF-α in Rheumatoid arthritis (RA) with insulin resistance (IR) seems to produce more improvement in insulin sensitivity in normal weight patients with RA than in obese patients with RA, suggesting that systemic-inflammation and obesity are independent risk factors for IR in RA patients. OBJECTIVES: To evaluate the insulin resistance in: normal weight patients with RA (RA NW), overweight patients with RA (RA OW), obese RA patients (RA OB), and matched control subjects with normal weight (NW) and obesity (OB); and its association with major cytokines involved in the pathogenesis of the disease...
December 20, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28070318/piceatannol-exhibits-anti-inflammatory-effects-on-macrophages-interacting-with-adipocytes
#9
Takayuki Yamamoto, Yongjia Li, Yuki Hanafusa, Yu-Sheng Yeh, Hiroko Maruki-Uchida, Shinpei Kawakami, Masahiko Sai, Tsuyoshi Goto, Tatsuhiko Ito, Teruo Kawada
Piceatannol (PIC), a natural analog of resveratrol (RES), is a phytochemical found in passion fruit seeds. To clarify the effects of PIC on obesity-induced inflammation in adipose tissue, we investigated the anti-inflammatory activity of PIC-related compounds (PIC, RES, and metabolites from PIC) in culture models of obese adipose tissue. Lipopolysaccharide (LPS) and conditioned medium from 3T3-L1 adipocytes (3T3-L1-CM) enhanced proinflammatory gene expression and synthesis of nitric oxide (NO), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in RAW264...
January 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/28068281/pathophysiological-role-of-adiponectin-leptin-and-asymmetric-dimethylarginine-in-the-process-of-atherosclerosis
#10
Daniela Iv Koleva, Maria M Orbetzova, Julia G Nikolova, Tanya I Deneva
Adipose tissue is recognized as a rich source of proinflammatory mediators that may directly contribute to vascular injury, insulin resistance, and atherogenesis. Many studies have shown that adiponectin has antiatherogenic and anti-inflammatory properties. Adiponectin acts not only as a factor increasing insulin sensitivity, and the protective effect may result from its ability to suppress production of proinflammatory cytokines. It negatively regulates the expression of TNF-alpha and C-reactive protein (CRP) in adipose tissue; reduces expression of vascular and intracellular adhesion molecules (VCAM-1, ICAM-1), E-selectin, interleukin-8 (IL-8)...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28067896/pathogenic-role-of-endogenous-tnf-%C3%AE-in-the-development-of-sj%C3%A3-gren-s-like-sialadenitis-and-secretory-dysfunction-in-non-obese-diabetic-mice
#11
Jing Zhou, Toshihisa Kawai, Qing Yu
Patients with Sjögren's syndrome (SS), an autoimmune disease primarily affecting exocrine glands, exhibit enhanced TNF-α expression in the saliva and salivary glands. However, the precise in vivo role of TNF-α during the initiation and development of SS is not clearly defined. The present study is undertaken to determine the function of endogenously produced TNF-α in the pathogenesis of SS in non-obese diabetic (NOD) mice, a model of this human disease. Administration of a neutralizing anti-TNF-α antibody to female NOD mice during the stage prior to disease onset significantly improved salivary secretion, indicating a remission of clinical symptoms of SS...
January 9, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
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/28065384/the-effects-of-fat-induced-obesity-on-bone-metabolism-in-rats
#13
Wei Li, Peng Xu, Cuizhe Wang, Xiaodan Ha, Yajuan Gu, Yan Wang, Jun Zhang, Jianxin Xie
OBJECTIVE: The aim of the current study was to investigate the effects of obesity, induced via a high-fat diet, on bone metabolism in rats. METHODS: Two hundred healthy Wistar male rats aged 4 weeks were fed a standard diet and a high-fat diet. At specific time points (week 0, 4, 6, 8, and 10), plasma was collected to determine the levels of glucose and lipid metabolism. Additionally, enzyme-linked immunoassays were performed to determine the plasma levels of adipocyte and bone metabolism factors...
January 3, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28063251/perivascular-adipose-tissue-inflammation-in-vascular-disease
#14
REVIEW
Ryszard Nosalski, Tomasz J Guzik
Perivascular adipose tissue (PVAT) plays a critical role in the pathogenesis of cardiovascular disease. In vascular pathologies perivascular adipose tissue increases in volume and becomes dysfunctional, with altered cellular composition and molecular characteristics. PVAT dysfunction is characterized by its inflammatory character, oxidative stress, diminished production of vaso-protective adipocyte derived relaxing factors (ADRFs) and increased production of paracrine factors such as resistin, leptin, cytokines (IL-6, TNF-α) and chemokines (RANTES, MCP-1)...
January 7, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28056748/pro-inflammation-cytokines-new-potential-therapeutic-targets-for-obesity-related-bone-disorders
#15
Tian Tian Wang, Chenglin Qi He, Xi Jie Yu
Obesity was traditionally thought as a positive regulator on the strength of bone. With the in-depth study, obesity is considered as a major risk factor for osteoporosis. Some pro-inflammation cytokines such as tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) are the factors that fat uses to negatively regulate bone metabolism. Obese people and animals show a higher level of serum TNF-α and IL-6, which are produced by macrophages derived from adipose tissue. These pro-inflammation cytokines regulate the proliferation and apoptosis of adipocyte, promote lipolysis, inhibit lipid synthesis and decrease blood lipids through autocrine and paracrine way...
January 4, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28052251/interplay-between-obesity-induced-inflammation-and-cgmp-signaling-in-white-adipose-tissue
#16
Abhishek Sanyal, Jennifer Naumann, Linda Sarah Hoffmann, Agnieszka Chabowska-Kita, Anna Ehrlund, Andreas Schlitzer, Peter Arner, Matthias Blüher, Alexander Pfeifer
Current worldwide figures suggest that obesity is pandemic. Understanding the underlying molecular mechanisms would help develop viable anti-obesity therapies. Here, we assess the influence of obesity-induced inflammation on white adipocyte cyclic guanosine monophosphate (cGMP) signaling, which is beneficial for adipocyte differentiation and thermogenesis. We find that murine gonadal and not inguinal fat is prone to obesity-induced inflammation. Correspondingly, the cGMP cascade is dysregulated in gonadal but not in inguinal fat of obese mice...
January 3, 2017: Cell Reports
https://www.readbyqxmd.com/read/28036103/elevated-tumour-necrosis-factor-alpha-was-associated-with-intima-thickening-in-obese-children
#17
Bo Luo, Yi-Can Yang, Qing Zhou, Xiao-Hui Wu, Ke Huang, Chao-Chun Zou
AIM: This study investigated the relationship between intima-media thickness (IMT) and immune parameters in obese children from five to 16 years of age. METHODS: We enrolled 185 obese children with a mean age of 10.65±2.10 years and 211 controls with a mean age of 10.32±1.81 years. Glycometabolism, lipid metabolism, sex hormones, immune indices and carotid IMT were measured. RESULTS: Serum interleukin (IL)-6, IL-10, tumour necrosis factor (TNF)-alpha, white blood cells and common and internal carotid artery IMTs in the obese group were higher than those in the control group (p<0...
December 30, 2016: Acta Paediatrica
https://www.readbyqxmd.com/read/28030919/cardiovascular-system-diseases-in-patients-with-polycystic-ovary-syndrome-the-role-of-inflammation-process-in-this-pathology-and-possibility-of-early-diagnosis-and-prevention
#18
REVIEW
Aleksandra Marciniak, Jolanta Nawrocka Rutkowska, Agnieszka Brodowska, Berenika Wiśniewska, Andrzej Starczewski
Polycystic ovary syndrome is a disorder which affects 5-10% of women in reproductive age. PCOS is a cause of hyperandrogenism, menstrual disorders and infertility. The most common clinical symptoms are hirsutism, acne and obesity. Patients often suffer from metabolic disorders: insulin resistance, hyperinsulinemia, dislipidemia, leading to atherosclerosis and others irregularities of the metabolic syndrome. Patients are in the high risk group for cardiovascular diseases (CVD) development because of the metabolic abnormalities...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28027595/inhibition-of-the-srebp-pathway-suppresses-hepatocellular-carcinoma-through-repressing-inflammation
#19
Na Li, Zhang-Sen Zhou, Yang Shen, Jie Xu, Hong-Hua Miao, Ying Xiong, Feng Xu, Bo-Liang Li, Jie Luo, Bao-Liang Song
: Obesity is a critical risk factor for hepatocellular carcinoma (HCC). However, it remains unknown whether inhibition of de novo lipid biosynthesis can suppress HCC. In this study, we blocked the sterol regulatory element binding protein (SREBP) pathway, one of the key determinants of lipid homeostasis, by ablating gp78 or SCAP in hepatocytes as well as by administering a chemical compound called betulin. We found that either genetically or pharmacologically inhibiting the SREBP pathway dramatically reduced diethylnitrosamine (DEN)-induced HCC progression through down-regulating tumor promoting cytokines including IL-6, TNF-α and IL-1β...
December 27, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28025996/rosuvastatin-as-a-potential-preventive-drug-for-the-development-of-hepatocellular-carcinoma-associated-with-non-alcoholic-fatty-liver-disease-in-mice
#20
Keisuke Yokohama, Shinya Fukunishi, Masaaki Ii, Ken Nakamura, Hideko Ohama, Yusuke Tsuchimoto, Akira Asai, Yasuhiro Tsuda, Kazuhide Higuchi
Hepatocellular carcinoma (HCC) represents approximately 85% of all primary liver cancer cases. Non-alcoholic fatty liver disease (NAFLD) is one of the risk factors for HCC. NAFLD occurs in patients with components of metabolic syndrome, such as type 2 diabetes mellitus, obesity, hypertension and hyperlipidemia. Therefore, hyperlipidemia also represents a patient population at risk for HCC that can readily be identified. Rosuvastatin, a 3-hydroxy-3-methyl-glutaryl coenzyme A (HMG-CoA) reductase inhibitor, has exhibited a more potent affinity for the active site of HMG-CoA reductase than other statins...
November 2016: International Journal of Molecular Medicine
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