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adipose tissue inflammation

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https://www.readbyqxmd.com/read/29666152/phenylmethimazole-abrogates-diet-induced-inflammation-glucose-intolerance-and-nafld
#1
Ashley Patton, Tyler Church, Caroline Wilson, Jean Thuma, Douglas J Goetz, Darlene E Berryman, Edward O List, Frank L Schwartz, Kelly D McCall
Nonalcoholic fatty liver disease (NAFLD) is the hepatic manifestation of both metabolic and inflammatory diseases and has become the leading chronic liver disease worldwide. High fat (HF) diets promote an increased uptake and storage of free fatty acids (FFAs) and triglycerides (TGs) in hepatocytes, which initiates steatosis and induces lipotoxicity, inflammation, and insulin resistance. Activation and signaling of Toll-like receptor 4 (TLR4) by FFAs induces inflammation evident in NAFLD and insulin resistance...
April 17, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29665658/effect-of-the-anti-il-17-antibody-on-allergic-inflammation-in-an-obesity-related-asthma-model
#2
Lin Liang, Jung Hur, Ji Young Kang, Chin Kook Rhee, Young Kyoon Kim, Sook Young Lee
Background/Aims: The co-occurrence of obesity aggravates asthma symptoms. Diet-induced obesity increases helper T cell (TH) 17 cell differentiation in adipose tissue and the spleen. The 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitor pravastatin can potentially be used to treat asthma in obese patients by inhibiting interleukin 17 (IL-17) expression. This study investigated the combined effects of pravastatin and anti-IL-17 antibody treatment on allergic inflammation in a mouse model of obesity-related asthma...
April 19, 2018: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29663892/complement-components-c3-and-c4-and-the-metabolic-syndrome
#3
Melanie Copenhaver, Chack-Yung Yu, Robert P Hoffman
INTRODUCTION: Increased systemic inflammation is engaged likely plays a significant role in the development of adult cardiometabolic diseases such as insulin resistance, dyslipidemia, atherosclerosis, and hypertension. The complement system is part of the innate immune system and plays a key role in in regulation inflammation. Of particular importance is the activation of complement components C3 and C4. C3 is produced primarily by the liver but is also produced in adipocytes, macrophages and endothelial cells, all of which are present in adipose tissue...
April 17, 2018: Current Diabetes Reviews
https://www.readbyqxmd.com/read/29663549/ostreolysin-induces-browning-of-adipocytes-and-ameliorates-hepatic-steatosis
#4
Lili Nimri, Katerina Staikin, Irena Peri, Einav Yehuda-Shnaidman, Betty Schwartz
BACKGROUND AND AIM: Nonalcoholic fatty liver disease (NAFLD) is associated with all features of the metabolic syndrome. Deposition of excess triglycerides in liver cells, a hallmark of NAFLD, is associated with loss of insulin sensitivity. Ostreolysin (Oly) is a 15-kDa fungal protein known to interact with cholesterol-enriched raft-like membrane domains. We aim to test whether a recombinant version of Oly (rOly) can induce functional changes in vitro in adipocytes or in vivo in mice fed a high-fat diet (HFD)...
April 16, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29663271/regenerative-potential-and-inflammation-induced-secretion-profile-of-human-adipose-derived-stromal-vascular-cells-are-influenced-by-donor-variability-and-prior-breast-cancer-diagnosis
#5
Adrienne M Parsons, Deborah M Ciombor, Paul Y Liu, Eric M Darling
Adipose tissue contains a heterogeneous population of stromal vascular fraction (SVF) cells that work synergistically with resident cell types to enhance tissue healing. Ease of access and processing paired with therapeutic promise make SVF cells an attractive option for autologous applications in regenerative medicine. However, inherent variability in SVF cell therapeutic potential from one patient to another hinders prognosis determination for any one person. This study investigated the regenerative properties and inflammation responses of thirteen, medically diverse human donors...
April 16, 2018: Stem Cell Reviews
https://www.readbyqxmd.com/read/29661693/phosphorylation-of-beta-3-adrenergic-receptor-at-serine-247-by-erk-map-kinase-drives-lipolysis-in-obese-adipocytes
#6
Shangyu Hong, Wei Song, Peter-James H Zushin, Bingyang Liu, Mark P Jedrychowski, Amir I Mina, Zhaoming Deng, Dimitrije Cabarkapa, Jessica A Hall, Colin J Palmer, Hassan Aliakbarian, John Szpyt, Steven P Gygi, Ali Tavakkoli, Lydia Lynch, Norbert Perrimon, Alexander S Banks
OBJECTIVE: The inappropriate release of free fatty acids from obese adipose tissue stores has detrimental effects on metabolism, but key molecular mechanisms controlling FFA release from adipocytes remain undefined. Although obesity promotes systemic inflammation, we find activation of the inflammation-associated Mitogen Activated Protein kinase ERK occurs specifically in adipose tissues of obese mice, and provide evidence that adipocyte ERK activation may explain exaggerated adipose tissue lipolysis observed in obesity...
March 29, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29660453/tgf-%C3%AE-1-down-regulation-in-the-mediobasal-hypothalamus-attenuates-hypothalamic-inflammation-and-protects-against-diet-induced-obesity
#7
Natália F Mendes, Joana M Gaspar, José C Lima-Júnior, Jose Donato, Lício A Velloso, Eliana P Araújo
BACKGROUND: The consumption of large amounts of dietary fats induces hypothalamic inflammation and impairs the function of the melanocortin system, leading to a defective regulation of caloric intake and whole-body energy expenditure. In mice fed a high-fat diet (HFD), TGF-β1 expression was increased and NF-κB signaling was activated in proopiomelanocortin neurons, which plays an important role in the obesity-associated hypothalamic inflammation scenario. However, whether excessive hypothalamic TGF-β1 impairs energy homeostasis remains unclear...
April 13, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29658577/interleukin-29-activates-expression-of-tissue-inhibitor-of-metalloproteinase-1-in-macrophages-via-toll%C3%A2-like-receptor-2
#8
Haoqiang Zhang, Bing Song, Shaoheng He
Obesity and diabetes are characterized by low grade chronic inflammation status and insulin resistance in adipose tissue associated with metalloproteinase inhibitor 1 (TIMP1). Interleukin (IL)29, exhibits multiple immune regulatory activities. However, the role of IL29 and its effects on TIMP1 remain to be elucidated. The present study was designed to investigate the effects of IL29 on expression of TIMP1 in macrophages associated with inflammation in adipose tissue. IL29 and high glucose were used to activate Raw264...
April 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29653264/helminth-infection-in-mice-improves-insulin-sensitivity-via-modulation-of-gut-microbiota-and-fatty-acid-metabolism
#9
Fernanda Pace, Bruno M Carvalho, Tamires M Zanotto, Andrey Santos, Dioze Guadagnini, Kelly L C Silva, Maria Carolina S Mendes, Guilherme Z Rocha, Silmara M Alegretti, Gustavo A Santos, Rodrigo R Catharino, Rita Paroni, Franco Folli, Mário José A Saad
Intestinal helminths are prevalent in individuals who live in rural areas of developing countries, where obesity, type 2 diabetes, and metabolic syndrome are rare. In the present study, we analyzed the modulation of the gut microbiota in mice infected with the helminth Strongyloides venezuelensis, and fed either a standard rodent chow diet or high-fat diet (HFD). To investigate the effects of the microbiota modulation on the metabolism, we analyzed the expression of tight-junction proteins present in the gut epithelium, inflammatory markers in the serum and tissue and quantified glucose tolerance and insulin sensitivity and resistance...
April 10, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29652540/micrornas-as-regulators-of-mitochondrial-dysfunction-and-obesity
#10
Mora Murri, Hamid El Azzouzi
Obesity, which has become a major global epidemic, is associated with numerous comorbidities and nearly every chronic condition. Mitochondria play a central role in this disorder as they control cell metabolism, regulating important processes such as ATP production, lipid β-oxidation, oxidative stress and inflammation. MicroRNAs (miRs) are shown to regulate many biological processes associated with obesity, comprising adipocyte differentiation, insulin action and fat metabolism. In addition, recent studies confirm that miRs are important regulators of mitochondrial function by either directly modulating mitochondrial proteins or targeting mitochondrial regulators, hereby modulating metabolic process in the context of obesity...
April 13, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29651293/homeobox-a5-promotes-white-adipose-tissue-browning-through-inhibition-of-the-tenascin-c-toll-like-receptor-4-nuclear-factor-kappa-b-inflammatory-signaling-in-mice
#11
Weina Cao, Hongtao Huang, Tianyu Xia, Chenlong Liu, Saeed Muhammad, Chao Sun
Lipopolysaccharide (LPS) induces rapid increase in systemic inflammatory factors. As adipose tissue is a key contributor to the inflammatory response to numerous metabolic stimuli, it is important to understand the mechanism behind the LPS-induced inflammation in white adipose tissue (WAT). Homeobox a5 (Hoxa5) is an important transcription factor, which is highly expressed in adipose tissue, and its mRNA expression is increased at cold exposure in mice. So far, the function of Hoxa5 in adipose tissue browning has been poorly understood...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29651102/exosomes-from-adipose-derived-stem-cells-overexpressing-nrf2-accelerate-cutaneous-wound-healing-by-promoting-vascularization-in-a-diabetic-foot-ulcer-rat-model
#12
Xue Li, Xiaoyun Xie, Weishuai Lian, Rongfeng Shi, Shilong Han, Haijun Zhang, Ligong Lu, Maoquan Li
Diabetic foot ulcers (DFU) increase the risks of infection and amputation in patients with diabetes mellitus (DM). The impaired function and senescence of endothelial progenitor cells (EPCs) and high glucose-induced ROS likely exacerbate DFUs. We assessed EPCs in 60 patients with DM in a hospital or primary care setting. We also evaluated the therapeutic effects of exosomes secreted from adipose-derived stem cells (ADSCs) on stress-mediated senescence of EPCs induced by high glucose. Additionally, the effects of exosomes and Nrf2 overexpression in ADSCs were investigated in vitro and in vivo in a diabetic rat model...
April 13, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29650791/impairments-in-adipose-tissue-microcirculation-in-type-2-diabetes-mellitus-assessed-by-real-time-contrast-enhanced-ultrasound
#13
Donghua Hu, Devika Remash, Ryan D Russell, Timothy Greenaway, Stephen Rattigan, Kathryn A Squibb, Graeme Jones, Dino Premilovac, Stephen M Richards, Michelle A Keske
BACKGROUND: In obesity and type 2 diabetes mellitus (T2D), adipose tissue expansion (because of larger adipocytes) results in reduced microvascular density which is thought to lead to adipocyte hypoxia, inflammation, and reduced nutrient delivery to the adipocyte. Adipose tissue microvascular responses in humans with T2D have not been extensively characterized. Furthermore, it has not been determined whether impaired microvascular responses in human adipose tissue are most closely associated with adiposity, inflammation, or altered metabolism...
April 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29649634/injectable-porous-biohybrid-hydrogels-incorporating-decellularized-tissue-components-for-soft-tissue-applications
#14
Yang Zhu, Sato Hideyoshi, Hongbin Jiang, Yasumoto Matsumura, Jenna L Dziki, Samuel T LoPresti, Luai Huleihel, Gabriela N F Faria, Leah C Fuhrman, Ricardo Lodono, Stephen F Badylak, William R Wagner
Biodegradable injectable hydrogels have been extensively studied and evaluated in various medical applications such as for bulking agents, drug delivery reservoirs, temporary barriers, adhesives, and cell delivery matrices. Where injectable hydrogels are intended to facilitate a healing response, it may be desirable to encourage rapid cellular infiltration into the hydrogel volume from the tissue surrounding the injection site. In this study, we developed a platform technique to rapidly form pores in a thermally responsive injectable hydrogel, poly(NIPAAm-co-VP-co-MAPLA) by using mannitol particles as porogens...
April 9, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29649530/self-assembled-hyaluronic-acid-nanoparticles-implications-as-a-nanomedicine-for-treatment-of-type-2-diabetes
#15
Jun Gi Rho, Hwa Seung Han, Ji Hye Han, Hansang Lee, Van Quy Nguyen, Wang Hee Lee, Seunglee Kwon, Sungeun Heo, Juhwan Yoon, Han Ho Shin, Eun-Young Lee, Hoin Kang, Siyoung Yang, Eun Kyung Lee, Jae Hyung Park, Wook Kim
Self-assembled hyaluronic acid nanoparticles (HA-NPs) have been extensively investigated for biomedical and pharmaceutical applications owing to their biocompatibility and receptor-binding properties. Here, we report that an empty HA-NP itself not bearing any drug has therapeutic effects on adipose tissue inflammation and insulin resistance. HA-NPs inhibited not only the receptor-mediated internalization of low-molecular-weight (LMW) free HA but also LMW free HA-induced pro-inflammatory gene expression in mouse primary bone marrow-derived macrophages (BMDMs) isolated from wild-type mice, but not in CD44-null (CD44-/-) BMDMs...
April 9, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29643769/the-role-of-physical-exercise-to-improve-the-browning-of-white-adipose-tissue-via-pomc-neurons
#16
REVIEW
Kellen C da Cruz Rodrigues, Rodrigo M Pereira, Thaís D P de Campos, Rodrigo F de Moura, Adelino S R da Silva, Dennys E Cintra, Eduardo R Ropelle, José R Pauli, Michel B de Araújo, Leandro P de Moura
Obesity is a public health issue that affects more than 600 million adults worldwide. The disease is characterized by fat accumulation, mainly in the abdominal area. The human body is mainly composed of two types of adipose tissue: white adipose tissue (WAT) and brown adipose tissue (BAT); however, the browning process generates a different type of brown fat-like adipocyte in WAT, which similar to BAT has thermogenic capacity by activating UCP-1. The hypothalamic arcuate nucleus plays an important role in WAT browning via POMC neurons, which are influenced by synergistic insulin and leptin signaling...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29642370/global-transcriptome-analysis-of-brown-adipose-tissue-of-diet-induced-obese-mice
#17
Jingyi Cao, Qi Zhu, Lin Liu, Bradley J Glazier, Benjamin C Hinkel, Chun Liang, Haifei Shi
Consumption of a high-fat diet (HFD) promotes the development of obesity, a disease resulting from an imbalance between energy intake and energy expenditure. Brown adipose tissue (BAT) has thermogenic capacity that burns calories to produce heat, and it is a potential target for the treatment and prevention of obesity. There is limited information regarding the impact of HFD on the BAT transcriptome. We hypothesized that HFD-induced obesity would lead to transcriptional regulation of BAT genes. RNA sequencing was used to generate global transcriptome profiles from BAT of lean mice fed with a low-fat diet (LFD) and obese mice fed with a HFD...
April 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29629347/%C3%AE-carotene-inhibits-activation-of-nf-%C3%AE%C2%BAb-activator-protein-1-and-stat3-and-regulates-abnormal-expression-of-some-adipokines-in-3t3-l1-adipocytes
#18
Soon Ok Cho, Min-Hyun Kim, Hyeyoung Kim
Background: Oxidative stress occurs in white adipose tissue and dysregulates the expression of adipokines secreted from adipocytes. Since adipokines influence inflammation, supplementation with antioxidants might be beneficial for preventing oxidative stress-mediated inflammation in adipocytes and inflammation-associated complications. β-Carotene is the most prominent antioxidant carotenoid and scavenges reactive oxygen species in various tissues. The purpose of this study was to determine whether β-carotene regulates the expression of adipokines, such as adiponectin, monocyte chemoattractant protein-1 (MCP-1), and regulated on activation, normal T cell expressed and secreted (RANTES) in 3T3-L1 adipocytes treated with glucose/glucose oxidase (G/GO)...
March 2018: Journal of Cancer Prevention
https://www.readbyqxmd.com/read/29628262/chitosan-oligosaccharides-improve-the-disturbance-in-glucose-metabolism-and-reverse-the-dysbiosis-of-gut-microbiota-in-diabetic-mice
#19
Junping Zheng, Xubing Yuan, Gong Cheng, Siming Jiao, Cui Feng, Xiaoming Zhao, Heng Yin, Yuguang Du, Hongtao Liu
The aim of this study is to investigate the effect of chitosan oligosaccharides (COS) on type 2 diabetes mellitus. Wild type C57BL/6J mice or diabetic db/db mice were treated with vehicle or COS for three months. COS treatment significantly decreased the blood glucose (P < 0.01) and reversed the insulin resistance (P < 0.05) in db/db mice, which was accompanied by suppressing the inflammation mediators (P < 0.05), down-regulating the lipogenesis (P < 0.01) and inhibiting the adipocyte differentiation (P < 0...
June 15, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29626829/the-effects-of-adiposity-and-alcohol-use-disorder-on-adipokines-and-biomarkers-of-inflammation-in-depressed-patients
#20
Mari Archer, Onni Niemelä, Mari Hämäläinen, Eeva Moilanen, Esa Leinonen, Olli Kampman
Patients with depression and alcohol use disorder frequently present with elevated markers of inflammation. Adipose tissue may function as a source for inflammation, yet the interplay between adiposity, alcohol use and depression has remained unknown. We examined 242 patients, referred to treatment for depressive symptoms, and followed for a period of 6 months. The assessments included screening for alcohol use and measurements of body mass index, serum adiponectin, leptin, resistin, progranulin, hs-CRP, IL-6 and MCP-1 at baseline and after 6 months of treatment...
March 28, 2018: Psychiatry Research
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