keyword
MENU ▼
Read by QxMD icon Read
search

adipocyte tissue macrophage

keyword
https://www.readbyqxmd.com/read/28726640/c1q-tnf-related-protein-6-ctrp6-links-obesity-to-adipose-tissue-inflammation-and-insulin-resistance
#1
Xia Lei, Marcus M Seldin, Hannah C Little, Nicholas Choy, Thomas Klonisch, G William Wong
Obesity is associated with chronic low-grade inflammation, and metabolic regulators linking obesity to inflammation have therefore received much attention. Secreted C1q/TNF-related proteins (CTRPs) are one such group of regulators that regulate glucose and fat metabolism in peripheral tissues and modulate inflammation in adipose tissue. We have previously shown that expression of CTRP6 is up-regulated in leptin-deficient mice and, conversely, down-regulated by the anti-diabetic drug, rosiglitazone. Here, we provide evidence for a novel role of CTRP6 in modulating both inflammation and insulin sensitivity...
July 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28726396/the-potent-anti-inflammatory-and-anti-adipogenic-properties-of-bamboo-sasa-coreana-nakai-leaves-extract-and-its-major-constituent-flavonoids
#2
Ji Hye Yang, Moon-Hee Choi, Seung Hwa Yang, Sam Seok Cho, Su Jung Park, Hyun-Jae Shin, Sung Hwan Ki
The pro-inflammatory response and recruitment of macrophages into adipose tissue contribute to metabolic dysfunction. Here, we reported the anti-inflammatory and anti-adipogenic effects of the methanol (MeOH) extract and ethylacetate (EtOAc) fraction of bamboo leaf and its molecular mechanism in RAW264.7 cells and 3T3-L1 adipocytes, respectively. Functional macrophage migration assays also were performed. Surprisingly, EtOAc fraction of MeOH extracts from native Korean plant species Sasa coreana Nakai (SCN) has shown potent anti-inflammatory properties; SCN pretreatment inhibited nitric oxide (NO) production (p<0...
July 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28716822/dock2-deficiency-mitigates-high-fat-diet-induced-obesity-by-reducing-adipose-tissue-inflammation-and-increasing-energy-expenditure
#3
Xia Guo, Feifei Li, Zaiyan Xu, Amelia Yin, Hang Yin, Chenxiao Li, Shi-You Chen
Obesity is the major risk factor for type 2 diabetes, cardiovascular disorders, and many other diseases. Adipose tissue inflammation is frequently associated with obesity and contributes to the morbidity and mortality. Dedicator of cytokinesis 2 (DOCK2) is involved in several inflammatory diseases, but its role in obesity remain unknown. To explore the function of DOCK2 in obesity and insulin resistance, wild-type (WT) and DOCK2 deficient (DOCK2-/-) mice were given chow or high-fat diet (HFD) for 12 weeks followed by metabolic, biochemical and histologic analyses...
July 17, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28710904/m1-macrophage-induced-endothelial-to-mesenchymal-transition-promotes-infantile-hemangioma-regression
#4
Keith Q Wu, Christopher S Muratore, Eui Y So, Changqi Sun, Patrycja M Dubielecka, Anthony M Reginato, Olin D Liang
Infantile hemangiomas are benign tumors of vascular endothelial cells (ECs), characterized by three distinct stages: proliferating phase, involuting phase, and involuted phase. The mechanisms that trigger involution of hemangioma into fibro-fatty tissue remain unknown. We report a novel mechanism by which M1-polarized macrophages induce endothelial-to-mesenchymal transition (EndMT) and promote hemangioma regression. M1- but not M2-polarized macrophages induced EndMT in ECs. Tumor necrosis factor-α and, to a lesser extent, IL-1β and interferon-γ were the most potent cytokines produced by the M1 macrophages that induce in vitro EndMT...
July 12, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28698385/retinoic-acid-receptor-related-orphan-receptor-alpha-stimulates-adipose-tissue-inflammation-by-modulating-endoplasmic-reticulum-stress
#5
Yin Liu, Yulong Chen, Jinlong Zhang, Yulan Liu, Yanjie Zhang, Zhiguang Su
Adipose tissue inflammation has been linked to metabolic diseases such as obesity and type 2 diabetes. However, the molecules that mediate inflammation in adipose tissue have not been addressed. Although retinoic acid receptor-related orphan receptor alpha (RORα) is known to be involved in the regulation of inflammatory response in some tissues, its role is largely unknown in adipose tissue. Conversely, it is known that endoplasmic reticulum (ER) stress and unfolding protein response (UPR) signaling affect the inflammatory response in obese adipose tissue, but whether RORα regulates these processes remains unknown...
July 11, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28694301/helminth-antigens-counteract-a-rapid-high-fat-diet-induced-decrease-in-adipose-tissue-eosinophils
#6
Susan M van den Berg, Andrea D van Dam, Pascal J Kusters, Linda Beckers, Myrthe den Toom, Saskia van der Velden, Jan Van den Bossche, Irma van Die, Mariëtte R Boon, Patrick C N Rensen, Esther Lutgens, Menno P de Winther
Brown adipose tissue (BAT) activation and white adipose tissue (WAT) beiging can increase energy expenditure and have the potential to reduce obesity and associated diseases. The immune system is a potential target in mediating brown and beige adipocyte activation. Type 2 and anti-inflammatory immune cells contribute to metabolic homeostasis within lean WAT, with a prominent role for eosinophils and interleukin (IL)-4 induced anti-inflammatory macrophages. We determined eosinophil numbers in epididymal WAT (EpAT), subcutaneous WAT (ScAT) and BAT after 1 day, 3 days or 1 week of high-fat diet (HFD) feeding in C57Bl/6 mice...
July 10, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28690546/repeated-excessive-exercise-attenuates-the-anti-inflammatory-effects-of-exercise-in-older-men
#7
Ronni E Sahl, Peter R Andersen, Katja Gronbaek, Thomas H Morville, Mads Rosenkilde, Hanne K Rasmusen, Steen S Poulsen, Clara Prats, Flemming Dela, Jørn W Helge
Introduction/Purpose: A number of studies have investigated the effect of training with a moderate exercise dose (3-6 h/weekly) on the inflammatory profile in blood, and the data are inconsistent. Cross-sectional studies indicate a positive effect of physical activity level on inflammation levels and risk of metabolic disease. However, it is not clear whether this may be dose dependent and if very prolonged repeated exercise therefore may be beneficial for low-grade inflammation. Based on this we studied how excessive repeated prolonged exercise influenced low-grade inflammation and adipose tissue anti-inflammatory macrophage content in six older male recreationally trained cyclists...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28686216/butyrate-reduces-hfd-induced-adipocyte-hypertrophy-and-metabolic-risk-factors-in-obese-ldlr-leiden-mice
#8
Charlotte E Pelgrim, Bart A A Franx, Jessica Snabel, Robert Kleemann, Ilse A C Arnoldussen, Amanda J Kiliaan
Adipose tissue (AT) has a modulating role in obesity-induced metabolic complications like type 2 diabetes mellitus (T2DM) via the production of so-called adipokines such as leptin, adiponectin, and resistin. The adipokines are believed to influence other tissues and to affect insulin resistance, liver function, and to increase the risk of T2DM. In this study, we examined the impact of intervention with the short-chain fatty acid butyrate following a high-fat diet (HFD) on AT function and other metabolic risk factors associated with obesity and T2DM in mice during mid- and late life...
July 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28679588/adipocyte-mtorc1-deficiency-promotes-adipose-tissue-inflammation-and-nlrp3-inflammasome-activation-via-oxidative-stress-and-de-novo-ceramide-synthesis
#9
Patricia Chimin, Maynara L Andrade, Thiago Belchior, Vivian A Paschoal, Juliana Magdalon, Alex S Yamashita, Erique Castro, Angela Castoldi, Adriano B Chaves-Filho, Marcos Y Yoshinaga, Sayuri Miyamoto, Niels O Camara, William T Festuccia
Mechanistic Target of Rapamycin complex 1 (mTORC1) activity is increased in adipose tissue of obese, insulin resistant mice, but its role in the regulation of tissue inflammation is unknown. We investigated herein the effects of adipocyte mTORC1 deficiency on adipose tissue inflammation and glucose homeostasis. For this, mice with adipocyte raptor deletion and controls fed a chow or a high-fat diet were evaluated for body mass, adiposity, glucose homeostasis and adipose tissue inflammation. Despite reducing adiposity, adipocyte mTORC1 deficiency promoted hepatic steatosis, insulin resistance and adipose tissue inflammation (increased infiltration of macrophages, neutrophils and B lymphocytes, crown-like structure density, TNF-α, IL-6 and MCP1 expression, IL-1β protein content, lipid peroxidation and de novo ceramide synthesis)...
July 5, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28668396/omega-3-fatty-acids-promote-fatty-acid-utilization-and-production-of-pro-resolving-lipid-mediators-in-alternatively-activated-adipose-tissue-macrophages
#10
Martina Rombaldova, Petra Janovska, Jan Kopecky, Ondrej Kuda
It is becoming increasingly apparent that mutual interactions between adipocytes and immune cells are key to the integrated control of adipose tissue inflammation and lipid metabolism in obesity, but little is known about the non-inflammatory functions of adipose tissue macrophages (ATMs) and how they might be impacted by neighboring adipocytes. In the current study we used metabolipidomic analysis to examine the adaptations to lipid overload of M1 or M2 polarized macrophages co-incubated with adipocytes and explored potential benefits of omega-3 polyunsaturated fatty acids (PUFA)...
June 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28667315/rare-progerin-expressing-preadipocytes-and-adipocytes-contribute-to-tissue-depletion-over-time
#11
Gwladys Revêchon, Nikenza Viceconte, Tomás McKenna, Agustín Sola Carvajal, Peter Vrtačnik, Peter Stenvinkel, Torbjörn Lundgren, Kjell Hultenby, Irene Franco, Maria Eriksson
Accumulation of progerin is believed to underlie the pathophysiology of Hutchinson-Gilford progeria syndrome, a disease characterized by clinical features suggestive of premature aging, including loss of subcutaneous white adipose tissue (sWAT). Although progerin has been found in cells and tissues from apparently healthy individuals, its significance has been debated given its low expression levels and rare occurrence. Here we demonstrate that sustained progerin expression in a small fraction of preadipocytes and adipocytes of mouse sWAT (between 4...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28659738/rosmarinic-acid-suppresses-adipogenesis-lipolysis-in-3t3-l1-adipocytes-lipopolysaccharide-stimulated-tumor-necrosis-factor-%C3%AE-secretion-in-macrophages-and-inflammatory-mediators-in-3t3-l1-adipocytes
#12
Yehua Rui, Lingxia Tong, Jinbo Cheng, Guiping Wang, Liqiang Qin, Zhongxiao Wan
Background: Rosmarinic acid (RA) is a natural phenol carboxylic acid with many promising biological effects. It may be a suitable candidate for improving obesity-related adipose tissue dysfunction. Objective: We aimed to investigate the therapeutic use of RA as an anti-obesity agent by measuring its effects on adipogenesis, lipolysis, and messenger RNA (mRNA) expression of major adipokines in 3T3-L1 adipocytes; and its effects on lipopolysaccharide (LPS)-induced tumor necrosis factor-α (TNF-α) secretion in macrophages and inflammatory mediators in 3T3-L1 adipocytes incubated with macrophage-conditioned medium (MCM)...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28655716/increased-adipose-tissue-aromatase-activity-improves-insulin-sensitivity-and-reduces-adipose-tissue-inflammation-in-male-mice
#13
Claes Ohlsson, Ann Hammarstedt, Liesbeth Vandenput, Niina Saarinen, Henrik Ryberg, Sara Windahl, Helen H Farman, John-Olov Janson, Sofia Movérare-Skrtic, Ulf Smith, Fu-Ping Zhang, Matti Poutanen, Shahram Hedjazifar, Klara Sjogren
Females are in general more insulin sensitive than males. To investigate if this is a direct effect of sex-steroids (SS) in white adipose tissue (WAT), we developed a male mouse model over expressing the aromatase enzyme, converting testosterone (T) to estradiol (E2), specifically in WAT (Ap2-arom mice). Adipose tissue E2 levels were increased while circulating SS levels were unaffected in male Ap2-arom mice. Importantly, male Ap2-arom mice were more insulin sensitive compared with WT mice and exhibited increased serum adiponectin levels and upregulated expression of Glut4 and Irs1 in WAT...
June 27, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28652194/adipose-tissue-conditioned-media-support-macrophage-lipid-droplet-biogenesis-by-interfering-with-autophagic-flux
#14
Sapir Bechor, Dikla Nachmias, Natalie Elia, Yulia Haim, Maayan Vatarescu, Alicia Leikin-Frenkel, Martin Gericke, Tanya Tarnovscki, Guy Las, Assaf Rudich
Obesity promotes the biogenesis of adipose tissue (AT) foam cells (FC), which contribute to AT insulin resistance. Autophagy, an evolutionarily-conserved house-keeping process, was implicated in cellular lipid handling by either feeding and/or degrading lipid-droplets (LDs). We hypothesized that beyond phagocytosis of dead adipocytes, AT-FC biogenesis is supported by the AT microenvironment by regulating autophagy. Non-polarized ("M0") RAW264.7 macrophages exposed to AT conditioned media (AT-CM) exhibited a markedly enhanced LDs biogenesis rate compared to control cells (8...
June 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28649659/inflammation-of-mammary-adipose-tissue-occurs-in-overweight-and-obese-patients-exhibiting-early-stage-breast-cancer
#15
Charlotte Vaysse, Jon Lømo, Øystein Garred, Frøydis Fjeldheim, Trygve Lofteroed, Ellen Schlichting, Anne McTiernan, Hanne Frydenberg, Anders Husøy, Steinar Lundgren, Morten W Fagerland, Elin Richardsen, Erik A Wist, Catherine Muller, Inger Thune
Growing evidence indicates that adiposity is associated with breast cancer risk and negatively affects breast cancer recurrence and survival, a paracrine role of mammary adipose tissue being very likely in this process. In contrast to other adipose depots, occurrence of a sub-inflammatory state of mammary adipose tissue defined by dying adipocytes surrounded by macrophages forming crown-like structures in overweight and obese subjects, remains only partially described. In a general population of breast cancer patients (107 patients) mostly undergoing breast-conserving surgery, we found a positive association between patient's body composition, breast adipocytes size, and presence of crown-like structures in mammary adipose tissue close to the tumor...
2017: NPJ Breast Cancer
https://www.readbyqxmd.com/read/28642037/testosterone-regulates-3t3-l1pre-adipocyte-differentiation-and-epididymal-fat-accumulation-in-mice-through-modulating-macrophage-polarization
#16
Xiaojiao Ren, Xiaojian Fu, Xinhua Zhang, Shiqiang Chen, Shuguang Huang, Lun Yao, Guoquan Liu
Low testosterone levels are strongly related to obesity in males. The balance between the classically M1 and alternatively M2 polarized macrophages also plays a critical role in obesity. It is not clear whether testosterone regulates macrophage polarization and then affects adipocyte differentiation. In this report, we demonstrate that testosterone strengthens interleukin (IL) -4-induced M2 polarization and inhibits lipopolysaccharide (LPS) -induced M1 polarization, but has no direct effect on adipocyte differentiation...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28641779/macrophage-functions-in-lean-and-obese-adipose-tissue
#17
REVIEW
Dylan Thomas, Caroline Apovian
Interactions between macrophages and adipocytes influence both metabolism and inflammation. Obesity-induced changes to macrophages and adipocytes lead to chronic inflammation and insulin resistance. This paper reviews the various functions of macrophages in lean and obese adipose tissue and how obesity alters adipose tissue macrophage phenotypes. Metabolic disease and insulin resistance shift the balance between numerous pro- and anti-inflammatory regulators of macrophages and create a feed-forward loop of increasing inflammatory macrophage activation and worsening adipocyte dysfunction...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28638152/combination-of-a-high-fat-diet-with-sweetened-condensed-milk-exacerbates-inflammation-and-insulin-resistance-induced-by-each-separately-in-mice
#18
Laureane Nunes Masi, Amanda Roque Martins, Amanda Rabello Crisma, Cátia Lira do Amaral, Mariana Rodrigues Davanso, Tamires Duarte Afonso Serdan, Roberta Dourado Cavalcante da Cunha de Sá, Maysa Mariana Cruz, Maria Isabel Cardoso Alonso-Vale, Rosângela Pavan Torres, Jorge Mancini-Filho, Joice Naiara Bertaglia Pereira, Marta Maria da Silva Righetti, Edson Aparecido Liberti, Sandro Massao Hirabara, Rui Curi
Obesogenic diets increase body weight and cause insulin resistance (IR), however, the association of these changes with the main macronutrient in the diet remains to be elucidated. Male C57BL/6 mice were fed with: control (CD), CD and sweetened condensed milk (HS), high-fat (HF), and HF and condensed milk (HSHF). After 2 months, increased body weight, glucose intolerance, adipocyte size and cholesterol levels were observed. As compared with CD, HS ingested the same amount of calories whereas HF and HSHF ingested less...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28625922/macrophage-infiltration-regulates-the-adipose-ecm-reconstruction-and-the-fibrosis-process-after-fat-grafting
#19
Junrong Cai, Bin Li, Kaiyang Liu, Guanghui Li, Feng Lu
BACKGROUND: Fat grafting experiences a regeneration process from free lipoaspirate to intact adipose tissue. The adipose extracellular matrixes (ECM) provide the structure and biochemical support for surrounding cells; inflammatory cells, like macrophages, regulate the process. Our hypothesis states that transferred fat undergoes ECM remodeling after fat grafting and this process is regulated by macrophage infiltration. METHODS: Lipoaspirate was injected subcutaneously into the back of nude mice...
August 19, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28614774/new-insight-into-the-direct-anti-inflammatory-activity-of-a-myokine-irisin-against-proinflammatory-activation-of-adipocytes-implication-for-exercise-in-obesity
#20
A I Mazur-Bialy, J Bilski, E Pochec, T Brzozowski
A biological activity of myokine irisin, has been intensively investigated in the context of a browning process occurring in white adipose tissue, but its role as a modulator of immune response has been little studied. The aim of our study was to determine the impact of irisin (0 - 100 nM) on pro-inflammatory activation of adipocyte 3T3 L1 cell line. Irisin reduced in a concentration-dependent manner the expression and activity of major proinflammatory cytokines, e.g. tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6) expression and their secretion into cell medium...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
keyword
keyword
42532
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"