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(ADIPOCYTE OR ADIPOSE) AND INFLAMATION

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https://www.readbyqxmd.com/read/30097828/remote-effects-of-transplanted-perivascular-adipose-tissue-on-endothelial-function-and-atherosclerosis
#1
Tetsuo Horimatsu, Aaron S Patel, Rosaria Prasad, Lauren E Reid, Tyler W Benson, Abdalrahman Zarzour, Mourad Ogbi, Thiago Bruder do Nascimento, Eric Belin de Chantemele, Brian K Stansfield, Xin-Yun Lu, Ha Won Kim, Neal L Weintraub
PURPOSE: Perivascular adipose tissue (PVAT) surrounds the arterial adventitia and plays an important role in vascular homeostasis. PVAT expands in obesity, and inflamed PVAT can locally promote endothelial dysfunction and atherosclerosis. Here, using adipose tissue transplantation, we tested the hypothesis that expansion of PVAT can also remotely exacerbate vascular disease. METHODS: Fifty milligrams of abdominal aortic PVAT was isolated from high-fat diet (HFD)-fed wild-type mice and transplanted onto the abdominal aorta of lean LDL receptor knockout mice...
August 10, 2018: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/30078199/adipose-tissue-dysfunction-in-cancer-cachexia
#2
Sahar I Daas, Balsam R Rizeq, Gheyath K Nasrallah
Cancer cachexia is a complex disorder that is driven by inflammation and metabolic imbalances, resulting in extreme weight loss. Adipose tissue, a main player in cancer cachexia, is an essential metabolic and secretory organ consisting of both white adipose tissue (WAT) and brown adipose tissue. Its secretory products, including adipokines and cytokines, affect a wide variety of central and peripheral organs, such as the skeletal muscle, brain, pancreas, and liver. Therefore, a combination of metabolic alterations, and systemic inflammation dysregulation of both anti-inflammatory and proinflammatory modulators contribute toward adipose tissue wasting in cancer cachexia...
August 4, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/30054522/endoscopic-transplantation-of-mesenchymal-stem-cell-sheets-in-experimental-colitis-in-rats
#3
Sehyung Pak, Sung Wook Hwang, In Kyong Shim, Sang Mun Bae, Yeon- Mi Ryu, Han-Byul Kim, Eun-Ju Do, Hye-Nam Son, Eun-Ji Choi, Sun-Ha Park, Sang-Yeob Kim, Sang Hyoung Park, Byong Duk Ye, Suk-Kyun Yang, Nobuo Kanai, Masanori Maeda, Teruo Okano, Dong-Hoon Yang, Jeong-Sik Byeon, Seung-Jae Myung
Owing to the recent progress in regenerative medicine technology, clinical trials that harnessed the regeneration and immune modulation potentiality of stem cells for treating IBD have shown promising results. We investigated the feasibility and utility of intraluminal endoscopic transplantation of rat MSC sheets in murine models of experimental colitis for targeted delivery of stem cells to lesions. We isolated adipose-derived mesenchymal stem cells (AD-MSC) and bone marrow-derived mesenchymal stem cells (BM-MSC) from EGFP-transgenic rats and fabricated the cells in sheet forms using temperature-responsive culture dishes...
July 27, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30043133/mesenteric-lymphatic-vessel-density-is-associated-with-disease-behavior-and-postoperative-recurrence-in-crohn-s-disease
#4
Yi Li, Yuanyuan Ge, Jianfeng Gong, Weiming Zhu, Lei Cao, Zhen Guo, Lili Gu, Jieshou Li
PURPOSE: The aims of the present study were to examine the density of lymphatic vessels in the mesentery and to assess the predictive value of the mesenteric lymphatic vessel density for postoperative clinical recurrence. METHODS: Ileocolonic resection specimens were obtained from 53 patients with Crohn's disease and 10 non-inflammatory bowel disease control subjects. Mesentery adipose tissues adjacent to the bowel wall were used for the histological quantification of lymphatic vessels using immunohistochemistry with the D2-40 antibody...
July 24, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29995306/adipokine-dysregulation-and-adipose-tissue-inflammation-in-human-obesity
#5
REVIEW
Xabier Unamuno, Javier Gómez-Ambrosi, Amaia Rodríguez, Sara Becerril, Gema Frühbeck, Victoria Catalán
Obesity, a worldwide epidemic, confers increased risk for multiple serious conditions, including type 2 diabetes, cardiovascular diseases, nonalcoholic fatty liver disease and cancer. Adipose tissue is considered one of the largest endocrine organs in the body as well as an active tissue for cellular reactions and metabolic homeostasis rather than an inert tissue for energy storage. The functional pleiotropism of adipose tissue relies on its ability to synthesize and release a large number of hormones, cytokines, extracellular matrix proteins and growth and vasoactive factors, collectively termed adipokines that influence a variety of physiological and pathophysiological processes...
July 11, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29950343/adipocytes-and-intestinal-epithelium-dysfunctions-linking-obesity-to-inflammation-induced-by-high-glycemic-index-pellet-diet-in-wistar-rats
#6
Anna Beatriz Santana Luz, Júlia Braga Dos Santos Figueredo, Bianca Damásio Pereira Dantas Salviano, Ana Júlia Felipe Camelo Aguiar, Luiza Gabriella Soares Dantas Pinheiro, Matheus Felipe Dantas Krause, Christina da Silva Camillo, Fernando Vagner Lobo Ladd, Raul Hernandes Bortolin, Vivian Nogueira Silbiger, Bruna Leal Lima Maciel, Ana Heloneida de Araújo Morais
We investigated the inflammatory effect of a pellet-diet with high glycemic index and load (HGLI) on the histological organization of adipocytes, intestinal epithelium, and fat in liver and pancreas in adult male Wistar rats. Two groups ( n =10) received for 17 weeks: (1) HGLI diet or (2) Standard diet (Labina®). Histological analyses of adipose tissue, jejunum, liver, and pancreas were performed. Stereology analysis, visceral adiposity index, gene expression, and immunohistochemistry of tumor necrosis factor-α (TNF-α) in visceral adipose tissue and plasma TNF-α were also assessed...
June 29, 2018: Bioscience Reports
https://www.readbyqxmd.com/read/29941879/tnf-inhibits-catecholamine-production-from-induced-sympathetic-neuron-like-cells-in-rheumatoid-arthritis-and-osteoarthritis-in-vitro
#7
Markus Herrmann, Sven Anders, Rainer H Straub, Zsuzsa Jenei-Lanzl
Synovial adipose stem cells (sASC) can be differentiated into catecholamine-expressing sympathetic neuron-like cells to treat experimental arthritis. However, the pro-inflammatory tumor necrosis factor (TNF) is known to be toxic to catecholaminergic cells (see Parkinson disease), and this may prevent anti-inflammatory effects in inflamed tissue. We hypothesized that TNF exhibits inhibitory effects on human differentiated sympathetic tyrosine hydroxylase-positive (TH+) neuron-like cells. For the first time, iTH+ neuron-like sympathetic cells were generated from sACSs of rheumatoid arthritis (RA) and osteoarthritis (OA) synovial tissue...
June 25, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29937494/comparative-analysis-between-the-in-vivo-biodistribution-and-therapeutic-efficacy-of-adipose-derived-mesenchymal-stromal-cells-administered-intraperitoneally-in-experimental-colitis
#8
Mercedes Lopez-Santalla, Pablo Mancheño-Corvo, Amelia Escolano, Ramon Menta, Olga Delarosa, Juan M Redondo, Juan A Bueren, Wilfried Dalemans, Eleuterio Lombardo, Marina I Garin
Mesenchymal stem cells (MSCs) have emerged as a promising treatment for inflammatory diseases. The immunomodulatory effect of MSCs takes place both by direct cell-to-cell contact and by means of soluble factors that leads to an increased accumulation of regulatory immune cells at the sites of inflammation. Similar efficacy of MSCs has been described regardless of the route of administration used, the inflammation conditions and the major histocompatibility complex context. These observations raise the question of whether the migration of the MSCs to the inflamed tissues is a pre-requisite to achieve their beneficial effect...
June 23, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29902065/mesenteric-adipose-tissue-contributes-to-intestinal-barrier-integrity-and-protects-against-non-alcoholic-fatty-liver-disease-in-mice
#9
Zhe Wu, Jiang Tan, Yujing Chi, Feng Zhang, Jun Xu, Yang Song, Xu Cong, Na Wu, Yulan Liu
Visceral adipose tissue (VAT) is related to non-alcoholic fatty liver disease (NAFLD). However, the role of mesenteric adipose tissue (MAT), part of the VAT, in NAFLD is unclear. In the present study, we monitored the liver and four depots of the VAT in high fat diet (HFD) feeding mice at multiple time points (4, 8, and 12 weeks). The MAT had become inflamed by the 8th week of HFD feeding, earlier than other depots of VAT. Furthermore, MAT removal after 8 weeks of HFD resulted in more severe steatosis and more foci of inflammation infiltration, as well as higher NAFLD activity scores...
June 14, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29846262/the-role-of-adipose-tissue-in-inflammatory-bowel-diseases
#10
Carl Weidinger, Ahmed N Hegazy, Britta Siegmund
PURPOSE OF REVIEW: The occurrence of creeping fat wrapping segments of inflamed gut represents a characteristic yet incompletely understood hallmark of Crohn's disease. Over the last decade, numerous studies have provided a limited understanding of this feature. Still, deciphering the detailed mechanisms and the pathophysiologic relevance of the interplay between creeping fat, barrier function and intestinal inflammation will be the aim of future studies. RECENT FINDINGS: The last 18 months have substantially contributed to this field, starting with an elegant three-dimensional study revealing B cell aggregates around lymphatic vessels embedded in the mesenteric fat, thus bringing back the idea that Crohn's disease might represent a 'lymphatic disease'...
July 2018: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/29763604/attenuation-of-macrophage-accumulation-and-polarisation-in-obese-diabetic-mice-by-a-small-molecule-significantly-improved-insulin-sensitivity
#11
Sandip Mukherjee, Snehasis Das, Dipanjan Chattopadhyay, Shuvasree Sarkar, Subhendu Kumar Chatterjee, Dhrubajyoti Talukdar, Sutapa Mukherjee, Subeer S Majumdar, Satinath Mukhopadhyay, Mihir K Chaudhuri, Samir Bhattacharya
Accumulation and polarization of anti-inflammatory M2 to proinflammatory M1 macrophage in the adipose tissue of obese diabetic mice is an important pathogenic signature. It worsens lipid induced inflammation and insulin resistance. Here we demonstrate that a small molecule, a peroxyvanadate compound i.e. DmpzH [VO(O2 )2 (dmpz)] or dmp, could robustly decrease macrophage infiltration, accumulation and their polarization in high fat diet (HFD) induced obese diabetic mice. In searching the underlying mechanism it was revealed that SIRT1 level was strikingly low in the inflamed adipose tissue of HFD mice as compared to mice fed with standard diet (SD)...
June 27, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29748664/nanovesicles-from-adipose-derived-mesenchymal-stem-cells-inhibit-t-lymphocyte-trafficking-and-ameliorate-chronic-experimental-autoimmune-encephalomyelitis
#12
Alessia Farinazzo, Stefano Angiari, Ermanna Turano, Edoardo Bistaffa, Silvia Dusi, Serena Ruggieri, Roberta Bonafede, Raffaella Mariotti, Gabriela Constantin, Bruno Bonetti
Cell based-therapies represent promising strategies for the treatment of neurological diseases. We have previously shown that adipose stem cells (ASC) ameliorate chronic experimental autoimmune encephalomyelitis (EAE). Recent evidence indicates that most ASC paracrine effects are mediated by extracellular vesicles, i.e. micro- and nanovesicles (MVs and NVs). We show that preventive intravenous administration of NVs isolated from ASC (ASC-NVs) before disease onset significantly reduces the severity of EAE and decreases spinal cord inflammation and demyelination, whereas therapeutic treatment with ASC-NVs does not ameliorate established EAE...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29625582/tsg-6-released-from-intraperitoneally-injected-canine-adipose-tissue-derived-mesenchymal-stem-cells-ameliorate-inflammatory-bowel-disease-by-inducing-m2-macrophage-switch-in-mice
#13
Woo-Jin Song, Qiang Li, Min-Ok Ryu, Jin-Ok Ahn, Dong Ha Bhang, Yun Chan Jung, Hwa-Young Youn
BACKGROUND: Inflammatory bowel disease (IBD) is an intractable autoimmune disorder that markedly deteriorates one's quality of life. Mesenchymal stem cells (MSCs) alleviate inflammation by modulating inflammatory cytokines in inflamed tissues, and have been suggested as a promising alternative for IBD treatment in human and veterinary cases. Furthermore, tumor necrosis factor-α-induced gene/protein 6 (TSG-6) is a key factor influencing MSC immunomodulatory properties; however, the precise mechanism of TSG-6 release from canine MSCs in IBD remains unclear...
April 6, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29604386/applications-of-inflammation-derived-gingival-stem-cells-for-testing-the-biocompatibility-of-dental-restorative-biomaterials
#14
A Soancă, M Lupse, M Moldovan, E Pall, M Cenariu, A Roman, O Tudoran, P Surlin, O Șorițău
BACKGROUND: Normal or inflamed gingival tissues are regarded as a source of mesenchymal stem cells (MSCs) abundant and easily accessible through minimally invasive dental procedures. Due to the proximity of dental resin composites to gingival tissues and to the possible local cytotoxic effect of the eluted components, gingiva-derived MSCs could be used to investigate the biocompatibility of dental biomaterials. PURPOSE: The present research aimed to isolate (MSCs) from inflamed and normal gingiva, to fully characterize them and to observe their behavior in relation with some commercial resin composite materials and one experimental material...
July 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29581238/role-of-dysfunctional-adipocytes-in-cholesterol-induced-nonobese-metabolic-syndrome
#15
Jiung-Pang Huang, Sheng-Chieh Hsu, Yaa-Jyuhn James Meir, Po-Shiuan Hsieh, Chih-Chun Chang, Kuan-Hsing Chen, Jan-Kan Chen, Li-Man Hung
Many studies have reported the causes of obese metabolic syndrome (MS); however, the causes of nonobese MS (NMS) remain unknown. In this study, we demonstrated that inflamed dysfunctional adipose tissue plays a crucial role in cholesterol-induced NMS. Control (C), high cholesterol (HC) and HC with 10% fructose in drinking water (HCF) diets were fed to Sprague-Dawley rats for 12 weeks. After 12 weeks, the body weights of the C- and HC-fed rats were comparable, but the weights of the HCF-fed rats were relatively low...
May 2018: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29562231/hepatocyte-secreted-dpp4-in-obesity-promotes-adipose-inflammation-and-insulin-resistance
#16
Devram S Ghorpade, Lale Ozcan, Ze Zheng, Sarah M Nicoloro, Yuefei Shen, Emily Chen, Matthias Blüher, Michael P Czech, Ira Tabas
Obesity-induced metabolic disease involves functional integration among several organs via circulating factors, but little is known about crosstalk between liver and visceral adipose tissue (VAT). In obesity, VAT becomes populated with inflammatory adipose tissue macrophages (ATMs). In obese humans, there is a close correlation between adipose tissue inflammation and insulin resistance, and in obese mice, blocking systemic or ATM inflammation improves insulin sensitivity. However, processes that promote pathological adipose tissue inflammation in obesity are incompletely understood...
March 29, 2018: Nature
https://www.readbyqxmd.com/read/29533741/myeloid-specific-acat1-ablation-attenuates-inflammatory-responses-in-macrophages-improves-insulin-sensitivity-and-suppresses-diet-induced-obesity
#17
Li-Hao Huang, Elaina M Melton, Haibo Li, Paul Sohn, DaeYoung Jung, Ching-Yi Tsai, Tian Ma, Hiroyuki Sano, HyeKyung Ha, Randall H Friedline, Jason K Kim, Edward Usherwood, Catherine Cy Chang, Ta-Yuan Chang
Macrophages are phagocytes that play important roles in health and diseases. Acyl-CoA:cholesterol acyltransferase 1 [ACAT1] converts cellular cholesterol to cholesteryl esters, and is expressed in many cell types. Unlike global Acat1 knockout [KO], myeloid-specific Acat1 KO [Acat1-M/-M ] does not cause overt abnormalities in mice. Here we performed analyses in age and sex matched Acat1-M/-M and wild-type mice on chow or Western diet, and discovered that Acat1-M/-M mice exhibit resistance to Western diet-induced obesity...
March 13, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29526533/type-2-diabetes-related-proteins-derived-from-an-in-vitro-model-of-inflamed-fat-tissue
#18
Jean Paul Ten Klooster, Alexandros Sotiriou, Sjef Boeren, Stefan Vaessen, Jacques Vervoort, Raymond Pieters
Currently, there is a worldwide increase of patients with type 2 diabetes (T2D). During the progression of healthy obese to T2D status, there is an influx of immune cells, in particular macrophages, into visceral adipose tissue, accompanied by an increase of inflammatory cytokines, such as, IL6, TNFα and Hp. To get a better insight in the underlying mechanisms, we performed a quantitative LCMS analysis on a modified in vitro assay, combining 3T3L1 adipocytes and activated RAW264.7 macrophages, thus mimicking inflamed adipose tissue...
April 15, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29514084/innate-immune-signaling-in-drosophila-blocks-insulin-signaling-by-uncoupling-pi-3-4-5-p-3-production-and-akt-activation
#19
Stephen W Roth, Moshe D Bitterman, Morris J Birnbaum, Michelle L Bland
In obese adipose tissue, Toll-like receptor signaling in macrophages leads to insulin resistance in adipocytes. Similarly, Toll signaling in the Drosophila larval fat body blocks insulin-dependent growth and nutrient storage. We find that Toll acts cell autonomously to block growth but not PI(3,4,5)P3 production in fat body cells expressing constitutively active PI3K. Fat body Toll signaling blocks whole-animal growth in rictor mutants lacking TORC2 activity, but not in larvae lacking Pdk1. Phosphorylation of Akt on the Pdk1 site, Thr342, is significantly reduced by Toll signaling, and expression of mutant AktT342D rescues cell and animal growth, nutrient storage, and viability in animals with active Toll signaling...
March 6, 2018: Cell Reports
https://www.readbyqxmd.com/read/29426013/celecoxib-mediated-reduction-of-prostanoid-release-in-hoffa-s-fat-pad-from-donors-with-cartilage-pathology-results-in-an-attenuated-inflammatory-phenotype
#20
U T Timur, M M J Caron, Y M Bastiaansen-Jenniskens, T J M Welting, L W van Rhijn, G J V M van Osch, P J Emans
OBJECTIVE: The Hoffa's fat pad (HFP) is an intra-articular adipose tissue which is situated under and behind the patella. It contains immune cells next to adipocytes and secretes inflammatory factors during osteoarthritis (OA). In this study, we compared the release profile of prostanoids, which are involved in inflammation, of HFP from OA patients vs patients with a focal cartilage defect (CD) without evidence for OA on MRI and investigated the prostanoid modulatory anti-inflammatory action of celecoxib on HFP...
May 2018: Osteoarthritis and Cartilage
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