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adipose tissue inflammation

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https://www.readbyqxmd.com/read/29449623/targeted-disruption-of-the-inos-gene-improves-adipose-tissue-inflammation-and-fibrosis-in-leptin-deficient-ob-ob-mice-role-of-tenascin-c
#1
S Becerril, A Rodríguez, V Catalán, L Méndez-Giménez, B Ramírez, N Sáinz, M Llorente, X Unamuno, J Gómez-Ambrosi, G Frühbeck
BACKGROUND/OBJECTIVES: Obesity is related to a dynamic extracellular matrix (ECM) remodeling, which involves the synthesis and degradation of different proteins, such as tenascin C (TNC) in the adipose tissue (AT). Given the functional relationship between leptin and inducible nitric oxide synthase (iNOS), our aim was to analyze the impact of the absence of the iNOS gene in AT inflammation and ECM remodeling in ob/ob mice. SUBJECTS/METHODS: The expression of genes involved in inflammation and ECM remodeling was evaluated in 10-week-old male double knockout (DBKO) mice simultaneously lacking the ob and iNOS genes as well as in ob/ob mice classified into three groups [control, leptin-treated (1 mg kg -1 day -1 ) and pair-fed]...
February 15, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29446826/1-3-6-7-tetrahydroxy-8-prenylxanthone-ameliorates-inflammatory-responses-resulted-in-by-the-paracrine-interaction-of-adipocytes-and-macrophages
#2
Dan Li, Qianyu Liu, Wen Sun, Xiuping Chen, Ying Wang, Yuxiang Sun, Ligen Lin
BACKGROUND AND PURPOSE: Chronic inflammation in adipose tissue is critical in the onset and development of insulin resistance and type 2 diabetes. Macrophage infiltration into adipose tissue and pro-inflammatory polarization play key roles in adipose tissue inflammation. The fruit hull of mangosteen (Garcinia mangostana) has been used in traditional medicine for treatment of various inflammatory diseases. However, its role in regulating adipose tissue inflammation is unexplored. This study was designed to identify xanthones from G...
February 15, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29446551/targeting-murine-mesenchymal-stem-cells-to-kidney-injury-molecule-1-improves-their-therapeutic-efficacy-in-chronic-ischemic-kidney-injury
#3
Xiangyu Zou, Kai Jiang, Amrutesh S Puranik, Kyra L Jordan, Hui Tang, Xiangyang Zhu, Lilach O Lerman
Mesenchymal stem cells (MSC) have been experimentally used for kidney repair, but modest retention limits their efficacy. Cell-surface coating allows modulating MSC homing and interaction with target cells. We coated mouse adipose tissue-derived MSC with antibodies directed against kidney injury molecule-1 (ab-KIM1), which is upregulated in injured kidneys, and tested the hypothesis that this would enhance their therapeutic effects in ischemic kidney injury. Untreated MSC, ab-KIM1-coated MSC (KIM-MSC), or vehicle, were injected systemically into the carotid artery of 2-kidneys, 1-clip mice 2 weeks after surgery...
February 15, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29445240/high-fat-diet-induced-metabolically-obese-and-normal-weight-rabbit-model-shows-early-vascular-dysfunction-mechanisms-involved
#4
Gabriela Alarcon, Julieta Roco, Mirta Medina, Analia Medina, Maria Peral, Susana Jerez
BACKGROUND: Obesity contributes significantly to the development and evolution of cardiovascular disease (CVD) which is believed to be mediated by oxidative stress, inflammation and endothelial dysfunction. However, the vascular health of metabolically obese and normal weight (MONW) individuals is not completely comprehended. OBJECTIVES: The purpose of our study was to evaluate vascular function on the basis of a high fat diet (HFD)-MONW rabbit model. SUBJECTS: Twenty four male rabbits were randomly assigned to receive either a regular diet (CD, n = 12) or a high-fat diet (18% extra fat on the regular diet, HFD, n = 12) for 6 weeks...
January 30, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29444341/high-fat-diet-induced-obesity-promotes-expansion-of-bone-marrow-adipose-tissue-and-impairs-skeletal-stem-cell-functions-in-mice
#5
Michaela Tencerova, Florence Figeac, Nicholas Ditzel, Hanna Taipaleenmäki, Tina Kamilla Nielsen, Moustapha Kassem
Obesity represents a risk factor for development of insulin resistance and Type 2 Diabetes. In addition, it has been associated with increased adipocyte formation in the bone marrow (BM) along with increased risk for bone fragility fractures. However, little is known on the cellular mechanisms that link obesity, BM adiposity and bone fragility. Thus, in an obesity intervention study in C57BL/6J mice fed with high fat diet (HFD) for 12 weeks, we investigated the molecular and cellular phenotype of bone marrow adipose tissue (BMAT), BM progenitor cells and BM microenvironment in comparison to peripheral adipose tissue (AT)...
February 14, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29444323/the-role-of-fat-and-inflammation-in-the-pathogenesis-and-management-of-osteoarthritis
#6
Hema Urban, Christopher B Little
OA is a complex disease involving mechanical, metabolic and inflammatory contributions to its aetiology. A key risk factor, obesity, is becoming an increasing focus of research due to its multiple potential impacts on OA incidence, progression and symptom severity. An increased load due to an increase in body mass has been well established as a mechanical contribution to the pathophysiology of OA. However, evidence of obesity-linked to OA in non-weight-bearing joints has implicated the biological role of adipose inflammation and metabolic abnormalities in OA...
February 9, 2018: Rheumatology
https://www.readbyqxmd.com/read/29438401/systemic-and-vascular-inflammation-in-an-in-vitro-model-of-central-obesity
#7
Arti Ahluwalia, Alessandra Misto, Federico Vozzi, Chiara Magliaro, Giorgio Mattei, Maria Cristina Marescotti, Angelo Avogaro, Elisabetta Iori
Metabolic disorders due to over-nutrition are a major global health problem, often associated with obesity and related morbidities. Obesity is peculiar to humans, as it is associated with lifestyle and diet, and so difficult to reproduce in animal models. Here we describe a model of human central adiposity based on a 3-tissue system consisting of a series of interconnected fluidic modules. Given the causal link between obesity and systemic inflammation, we focused primarily on pro-inflammatory markers, examining the similarities and differences between the 3-tissue model and evidence from human studies in the literature...
2018: PloS One
https://www.readbyqxmd.com/read/29438034/c1qtnf3-in-the-murine-ovary-and-its-function-in-folliculogenesis
#8
Zhoufei Mao, Liuhong Yang, Xiaosheng Lu, Anni Tan, Yuxia Wang, Fei Ding, Luanjuan Xiao, Xufeng Qi, Yanhong Yu
C1q/tumor necrosis factor-related protein 3 (C1QTNF3) is a novel adipokine with modulating effects on metabolism, inflammation, and the cardiovascular system. C1QTNF3 expression levels in the sera and omental adipose tissues of women with PCOS are low compared to control subjects. However, the expression and function of C1QTNF3 in the ovary has not previously been examined. Here, we assessed the expression patterns of C1qtnf3 in the ovary and explored its role in folliculogenesis. The C1qtnf3 transcript abundance was higher in large follicles than in small follicles and was under the influence of gonadotropin...
February 1, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29434073/placental-growth-factor-plgf-is-linked-to-inflammation-and-metabolic-disorders-in-mice-with-diet-induced-obesity
#9
Mincheol Kang, Jain Jeong, Jinhee Lee, Song Park, Yonghun Sung, Minjee Choi, Wookbong Kwon, Soyoung Jang, Kwang Shik Choi, Yeon Sik Choo, Duhak Yoon, Myoung Ok Kim, Zae Young Ryoo
Placental growth factor (PlGF), a member of the vascular endothelial growth factor (VEGF) sub-family, plays a major role in angiogenesis and vasculogenesis. Previous study demonstrated that PlGF-overexpressing transgenic (Tg) mice had gestational loss. In addition, PlGF secretion was up-regulated in isolated T lymphocytes (T-cell) upon CD3/CD28 stimulation, suggesting that PlGF could be a regulator of T-cell differentiation and development. T-cells are well known to play a critical role in obesity-induced inflammation...
February 9, 2018: Endocrine Journal
https://www.readbyqxmd.com/read/29433433/epicardial-adipose-tissue-is-related-to-arterial-stiffness-and-inflammation-in-patients-with-cardiovascular-disease-and-type-2-diabetes
#10
Shaween Al-Talabany, Ify Mordi, J Graeme Houston, Helen M Colhoun, Jonathan R Weir-McCall, Shona Z Matthew, Helen C Looker, Daniel Levin, Jill J F Belch, Fiona Dove, Faisel Khan, Chim C Lang
BACKGROUND: Epicardial adipose tissue (EAT) is an emerging cardio-metabolic risk factor and has been shown to correlate with adverse cardiovascular (CV) outcome; however the underlying pathophysiology of this link is not well understood. The aim of this study was to evaluate the relationship between EAT and a comprehensive panel of cardiovascular risk biomarkers and pulse wave velocity (PWV) and indexed left ventricular mass (LVMI) in a cohort of patients with cardiovascular disease (CVD) and diabetes compared to controls...
February 13, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29433065/mir-330-5p-tim-3-axis-regulates-macrophage-m2-polarization-and-insulin-resistance-in-diabetes-mice
#11
Jiling Sun, Qiujing Huang, Shufa Li, Fanqing Meng, Xunhua Li, Xiaoyun Gong
Obesity is associated with a state of low-grade inflammatory response in adipose tissue, and contributes to the development of type 2 diabetes. Immune cells such as macrophages can infiltrate adipose tissue and are responsible for the majority of inflammatory cytokine production. Therefore, adipose tissue promotes macrophage infiltration, resulting in local inflammation and insulin resistance. Tim-3 negatively regulates IFN-γ secretion and influences the ability to induce T cell tolerance in diabetes. MicroRNA contributes to the development of immunological tolerance and involves in macrophage polarization...
February 9, 2018: Molecular Immunology
https://www.readbyqxmd.com/read/29432804/effects-of-long-term-nitrate-supplementation-on-carbohydrate-metabolism-lipid-profiles-oxidative-stress-and-inflammation-in-male-obese-type-2-diabetic-rats
#12
Sevda Gheibi, Sajad Jeddi, Mattias Carlström, Hanieh Gholami, Asghar Ghasemi
PURPOSE: Supplementation with inorganic nitrate to boost the nitrate-nitrite-nitric oxide (NO) pathway, may act as a potential therapeutic agent in diabetes. The aim of this study was to determine the effects of nitrate on carbohydrate metabolism, lipid profiles, oxidative stress, and inflammation in obese type 2 diabetic rats. METHODS: Male Wistar rats were divided into 4 groups: Control, control + nitrate, diabetes, and diabetes + nitrate. Diabetes was induced using a high-fat diet and low-dose of streptozotocin...
February 9, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29430984/is-chemerin-associated-with-gestational-diabetes-mellitus-an-evidence-based-clinical-research-from-chinese-women
#13
Zhaoxia Liang, Menglin Zhou, Xu-Kang Xu, Fan Qu, Danqing Chen
The present study aimed to explore the association between gestational diabetes mellitus (GDM) and Chemerin, by analysing Chemerin level, clinical data and biochemical parameters among 46 GDM patients and 43 controls. It was found that the Chemerin levels from cord blood, peripheral blood, adipose tissue and placenta tissue were all significantly higher in the GDM group than those in the control group (p < .05 for all). Maternal insulin resistance (IR) index and serum inflammation parameters, including C-reactive protein and white blood cells, were also higher in GDM group (p < ...
February 12, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29429540/sodium-butyrate-modulates-adipocyte-expansion-adipogenesis-and-insulin-receptor-signaling-by-upregulation-of-ppar-%C3%AE-in-obese-apo-e-knockout-mice
#14
Edenil Costa Aguilar, Josiane Fernandes da Silva, Juliana Maria Navia-Pelaez, Alda Jusceline Leonel, Lorrayne Gonçalves Lopes, Zélia Menezes-Garcia, Adaliene Versiani Matos Ferreira, Luciano Dos Santos Aggum Capettini, Lilian G Teixeira, Virginia Soares Lemos, Jacqueline I Alvarez-Leite
OBJECTIVES: Studies suggest that sodium butyrate reduces obesity-associated inflammation and insulin resistance in in vitro and in vivo models. Apo E -/- mice have high basal oxidative stress and naturally develop dyslipidemia and atherosclerosis. Because these disorders are present in obesity, the aim of this study was to determine whether Apo E -/- mice could be a more realistic model for studying obesity and insulin resistance. METHODS: We evaluated the action of orally administered sodium butyrate on adipose tissue expansion and insulin resistance using diet-induced obese Apo E -/- mice...
March 2018: Nutrition
https://www.readbyqxmd.com/read/29428931/increased-expression-of-the-innate-immune-receptor-tlr10-in-obesity-and-type-2-diabetes-association-with-ros-mediated-oxidative-stress
#15
Sardar Sindhu, Nadeem Akhter, Shihab Kochumon, Reeby Thomas, Ajit Wilson, Steve Shenouda, Jaakko Tuomilehto, Rasheed Ahmad
BACKGROUND/AIMS: Metabolic diseases such as obesity and type-2 diabetes (T2D) are known to be associated with chronic low-grade inflammation called metabolic inflammation together with an oxidative stress milieu found in the expanding adipose tissue. The innate immune Toll-like receptors (TLR) such as TLR2 and TLR4 have emerged as key players in metabolic inflammation; nonetheless, TLR10 expression in the adipose tissue and its significance in obesity/T2D remain unclear. METHODS: TLR10 gene expression was determined in the adipose tissue samples from healthy non-diabetic and T2D individuals, 13 each, using real-time RT-PCR...
January 30, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29428734/co-transplantation-of-exosomes-derived-from-hypoxia-preconditioned-adipose-mesenchymal-stem-cells-promotes-neovascularization-and-graft-survival-in-fat-grafting
#16
Yu-di Han, Yun Bai, Xin-Long Yan, Jing Ren, Quan Zeng, Xiao-Dong Li, Xue-Tao Pei, Yan Han
BACKGROUND: Adipose-derived stromal cells (ADSCs)-derived exosomes (ADSC-Exos) account for the proangiogenic potential of stem cell. This study aimed to investigate the effect of ADSC-derived exosomes (ADSC-Exos) on the survival in fat grafting. METHODS: A nude mouse model of subcutaneous fat grafting was adopted. Hypoxic preconditioned ADSC-Exos and ADSC-Exos were injected around the grafted tissue. The fat graft sample was weighed and examined by hematoxylin and eosin (H&E) staining and immunohistochemistry...
February 8, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29428365/the-mechanisms-linking-obesity-to-colon-cancer-an-overview
#17
REVIEW
Aleksandra Tarasiuk, Paula Mosińska, Jakub Fichna
Obesity, characterised as a chronic low-grade inflammation is a crucial risk factor for colon cancer. The expansion of the adipose tissue is related to elevated triglyceride and low-density lipoprotein (LDL) levels and hyperinsulinemia, which all are presumed mediators of the tumour development. Obesity is also believed to support carcinogenesis by activating the insulin/IGF-1 pathway. Moreover, obesity increases the level of proinflammatory cytokines (e.g. TNF-α, IL-1, and IL-6) and has a significant impact on selected adipokines...
February 7, 2018: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/29426925/ageing-potentiates-diet-induced-glucose-intolerance-%C3%AE-cell-failure-and-tissue-inflammation-through-tlr4
#18
Wei He, Ting Yuan, Dolma Choezom, Hannah Hunkler, Karthika Annamalai, Blaz Lupse, Kathrin Maedler
Ageing and obesity are two major risk factors for the development of type 2 diabetes (T2D). A chronic, low-grade, sterile inflammation contributes to insulin resistance and β-cell failure. Toll-like receptor-4 (TLR4) is a major pro-inflammatory pathway; its ligands as well as downstream signals are increased systemically in patients with T2D and at-risk individuals. In the present study we investigated the combined effects of high fat/high sucrose diet (HFD) feeding, ageing and TLR4-deficiency on tissue inflammation, insulin resistance and β-cell failure...
February 9, 2018: Scientific 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
#19
Ufuk Tan Timur, Marjolein M J Caron, Yvonne M Bastiaansen-Jenniskens, Tim J M Welting, L W van Rhijn, Gerjo J V M van Osch, Pieter 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 versus patients with a focal cartilage defect without evidence for OA on MRI and investigated the prostanoid modulatory anti-inflammatory action of celecoxib on HFP...
February 6, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29425818/dna-methylation-of-the-klf14-gene-region-on-whole-blood-provide-prediction-for-the-chronic-inflammation-at-the-adipose-tissue
#20
Chihiro Iwaya, Hidetoshi Kitajima, Ken Yamamoto, Yasutaka Maeda, Noriyuki Sonoda, Hiroki Shibata, Toyoshi Inoguchi
Krüppel-Like Factor 14 (KLF14) gene, which appears to be a master regulator of gene expression on the adipose tissue and have previously been associated with BMI and Type 2 diabetes (T2D) by large GWAS studies. In order to find predictive biomarkers for the development of T2D, it is necessary to take into account changes in the epigenome affected by environmental factors. This study focused on aging and obesity, which are T2D risk factor, and examines epigenetic changes and inflammatory changes. Thus we investigated DNA methylation change at Klf14 promoter region of different organs using mice for comparing aging and weight...
February 6, 2018: Biochemical and Biophysical Research Communications
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