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https://www.readbyqxmd.com/read/29161076/obesity-and-metabolic-abnormalities-in-chronic-obstructive-pulmonary-disease
#1
Emiel F M Wouters
Chronic obstructive pulmonary disease (COPD) and obesity are major causes of morbidity and mortality worldwide, and a relationship between COPD and obesity is increasingly recognized. The nature and underlying mechanisms of the link between obesity and COPD are still largely unknown. Obesity, and abdominal adiposity in particular, is linked to metabolic syndrome. Hypertension, hyperglycemia, and abdominal adiposity seem to be the most prevalent components of metabolic syndrome in COPD. Adipose tissues function as a source of a variety of signaling molecules in the pathobiology of respiratory diseases...
November 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29161075/metabolic-dysregulation-systemic-inflammation-and-pediatric-obesity-related-asthma
#2
Deepa Rastogi, Fernando Holguin
Obesity-related asthma is a distinct pediatric asthma phenotype. It is associated with higher disease burden, lower pulmonary function, and suboptimal response to current asthma medications. Recent studies have made inroads into elucidating its pathophysiology. Systemic immune responses in obese children with asthma are skewed to a nonatopic T-helper cell type 1 (Th1) pattern that correlates with pulmonary function deficits. The prevalence of metabolic dysregulation is also higher among obese children with asthma than among normal-weight children with asthma...
November 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29160594/leptin-action-in-normal-and-pathological-pregnancies
#3
REVIEW
Antonio Pérez-Pérez, Ayelén Toro, Teresa Vilariño-García, Julieta Maymó, Pilar Guadix, José L Dueñas, Manuel Fernández-Sánchez, Cecilia Varone, Víctor Sánchez-Margalet
Leptin is now considered an important signalling molecule of the reproductive system, as it regulates the production of gonadotrophins, the blastocyst formation and implantation, the normal placentation, as well as the foeto-placental communication. Leptin is a peptide hormone secreted mainly by adipose tissue, and the placenta is the second leptin-producing tissue in humans. Placental leptin is an important cytokine which regulates placental functions in an autocrine or paracrine manner. Leptin seems to play a crucial role during the first stages of pregnancy as it modulates critical processes such as proliferation, protein synthesis, invasion and apoptosis in placental cells...
November 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29160568/nerve-detection-using-optical-spectroscopy-an-evaluation-in-four-different-models-in-human-and-swine-in-vivo-and-post-mortem
#4
Gerrit C Langhout, Torre M Bydlon, Marjolein van der Voort, Manfred Müller, Jeroen Kortsmit, Gerald Lucassen, Andrea J R Balthasar, Geert-Jan van Geffen, Thorsten Steinfeldt, Henricus J C M Sterenborg, Benno H W Hendriks, Theo J M Ruers
OBJECTIVE: Identification of peripheral nerve tissue is crucial in both surgery and regional anesthesia. Recently, optical tissue identification methods are presented to facilitate nerve identification in transcutaneous procedures and surgery. Optimization and validation of such techniques require large datasets. The use of alternative models to human in vivo, like human post mortem, or swine may be suitable to test, optimize and validate new optical techniques. However, differences in tissue characteristics and thus optical properties, like oxygen saturation and tissue perfusion are to be expected...
November 21, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29160443/body-fat-redistribution-and-changes-in-lipid-and-glucose-metabolism-in-people-living-with-hiv-aids
#5
Rebeca Antunes Beraldo, André Pereira Dos Santos, Mariana Palma Guimarães, Helena Siqueira Vassimon, Francisco José Albuquerque de Paula, Dalmo Roberto Lopes Machado, Maria Cristina Foss-Freitas, Anderson Marliere Navarro
INTRODUCTION: The HIV lipodystrophy syndrome is characterized by changes in metabolism, and body composition that increase cardiovascular risk of people living with HIV/AIDS (PLWHA) using highly active antiretroviral therapy (HAART). OBJECTIVE: To assess the prevalence of lipodystrophy and changes in lipid and glucose metabolism in PLWHA in use of HAART. METHODS: For the anthropometric evaluation we measured weight, height and abdominal circumference (AC)...
July 2017: Revista Brasileira de Epidemiologia, Brazilian Journal of Epidemiology
https://www.readbyqxmd.com/read/29160049/lower-irisin-levels-in-coronary-artery-disease-a-meta-analysis
#6
Wenwen Guo, Baihui Zhang, Xia Wang
INTRODUCTION: Irisin is a newly discovered myokine, which is involved in energy metabolism and associated with "browning" of the white adipose tissue, obesity, diabetes mellitus and metabolic syndrome. It's still uncertain that whether irisin level is associated with coronary artery disease. The purpose of this study is to explore the relationship between irisin levels and coronary artery disease. EVIDENCE ACQUISITION: A search of PubMed, MEDLINE, Elsevier Science Direct, Springer, Web of Science and China National Knowledge Infrastructure (CNKI) for studies published from 2000 to 2017 was undertaken to identify relevant studies...
November 20, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/29159396/association-of-nonalcoholic-fatty-liver-disease-with-lower-brain-volume-in-healthy-middle-aged-adults-in-the-framingham-study
#7
Galit Weinstein, Shira Zelber-Sagi, Sarah R Preis, Alexa S Beiser, Charles DeCarli, Elizabeth K Speliotes, Claudia L Satizabal, Ramachandran S Vasan, Sudha Seshadri
Importance: Nonalcoholic fatty liver disease (NAFLD) is a common condition that is most often asymptomatic. It is associated with metabolic syndrome, incident diabetes, carotid atherosclerosis, and endothelial dysfunction, conditions that in turn are strongly linked with brain damage and cognitive impairment. However, it is not known whether NAFLD is associated with structural brain measures in humans. Objective: To assess the association between prevalent NAFLD and brain magnetic resonance imaging (MRI) measures...
November 20, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29158741/polysaccharide-hydrogels-support-the-long-term-viability-of-encapsulated-human-mesenchymal-stem-cells-and-their-ability-to-secrete-immunomodulatory-factors
#8
Fahd Hached, Claire Vinatier, Pierre-Gabriel Pinta, Philippe Hulin, Catherine Le Visage, Pierre Weiss, Jérôme Guicheux, Aurélie Billon-Chabaud, Gaël Grimandi
While therapeutically interesting, the injection of MSCs suffers major limitations including cell death upon injection and a massive leakage outside the injection site. We proposed to entrap MSCs within spherical particles derived from alginate, as a control, or from silanized hydroxypropyl methylcellulose (Si-HPMC). We developed water in an oil dispersion method to produce small Si-HPMC particles with an average size of about 68 μm. We evidenced a faster diffusion of fluorescein isothiocyanate-dextran in Si-HPMC particles than in alginate ones...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29158739/human-admc-derived-adipocyte-thermogenic-capacity-is-regulated-by-il-4-receptor
#9
Fernando Lizcano, Diana Vargas, Ángela Gómez, Astrid Torrado
Type two innate immune system is anti-inflammatory and may play an important role as the means whereby "browning" is induced in subcutaneous adipocytes. It was shown that IL-4 may influence the fate of adipose cell precursors by promoting differentiation towards more thermogenic adipocytes in mice. Here, we investigated the influence of IL-4 and IL-4 receptor, a type two immune cytokine pathway, on the metabolic activity and thermogenic potential of human adipocytes differentiated from adipose-derived mesenchymal stem cells (ADMSCs) obtained from subcutaneous samples of healthy women undergoing abdominoplasty...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29158541/dysregulation-of-mitochondrial-function-and-biogenesis-modulators-in-adipose-tissue-of-obese-children
#10
R Zamora-Mendoza, H Rosas-Vargas, M T Ramos-Cervantes, P Garcia-Zuniga, H Perez-Lorenzana, P Mendoza-Lorenzo, A Perez-Ortiz, J Estrada, A Miliar-Garcia, E Lara-Padilla, G Ceballos, A Rodriguez, F Villarreal, I Ramirez-Sanchez
BACKGROUND/OBJECTIVES: We aimed to evaluate mitochondrial biogenesis (MB), structure, metabolism, and dysfunction in abdominal adipose tissue from male pediatric patients with obesity. SUBJECTS/METHODS: Samples were collected from five children with obesity (percentile ⩾95) and five eutrophic boys (percentile ⩾5/⩽85) (8-12 years old) following parental informed consent. We analyzed the expression of key genes involved in MB (SIRT1, PPARγ, PGC1α, NRF1, NRF2, and TFAM) and surrogates for mitochondrial function/structure/metabolism (porin, TOMM20, complex I and V, UCP1, UCP2, SIRT3, SOD2) by Western blot...
November 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29158445/pdgfr%C3%AE-pdgfr%C3%AE-signaling-balance-modulates-progenitor-cell-differentiation-into-white-and-beige-adipocytes
#11
Zhanguo Gao, Alexes C Daquinag, Fei Su, Brad Snyder, Mikhail G Kolonin
Relative abundance of thermogenic beige adipocytes and lipid-storing white adipocytes in adipose tissue underlie its metabolic activity. The roles of adipocyte progenitor cells, which express PDGFRα or PDGFRβ, in adipose tissue function have remained unclear. Here, by defining the developmental timing of PDGFRα and PDGFRβ expression in mouse subcutaneous and visceral adipose depots, we uncover depot-specificity of preadipocyte delineation. We demonstrate that PDGFRα expression precedes PDGFRβ expression in all subcutaneous but only in a fraction of visceral adipose stromal cells...
November 20, 2017: Development
https://www.readbyqxmd.com/read/29158314/tumour-adipose-tissue-crosstalk-fuelling-tumour-metastasis-by-extracellular-vesicles
#12
REVIEW
Lucía Robado de Lope, Olwen Leaman Alcíbar, Ana Amor López, Marta Hergueta-Redondo, Héctor Peinado
During metastasis, tumour cells must communicate with their microenvironment by secreted soluble factors and extracellular vesicles. Different stromal cell types (e.g. bone marrow-derived cells, endothelial cells and fibroblasts) influence the growth and progression of tumours. In recent years, interest has extended to other cell types in the tumour microenvironment such as adipocytes and adipose tissue-derived mesenchymal stem cells. Indeed, obesity is becoming pandemic in some developing countries and it is now considered to be a risk factor for cancer progression...
January 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29158254/weight-history-and-subclinical-myocardial-damage
#13
Chiadi E Ndumele, Laura Cobb, Mariana Lazo, Natalie A Bello, Amil Shah, Vijay Nambi, Roger S Blumenthal, Gary Gerstenblith, Scott D Solomon, Christie M Ballantyne, Elizabeth Selvin, Josef Coresh
BACKGROUND: Excess weight is associated with subclinical myocardial damage, as reflected by high-sensitivity cardiac troponin T (hs-cTnT) concentrations, which portends high heart failure risk. However, the association between weight history and myocardial damage is unknown. METHODS: We evaluated 9062 Atherosclerosis Risk in Communities (ARIC) visit 4 (1996-1999) participants with a body mass index (BMI) ≥ 18.5 kg/m(2) and no previous cardiovascular disease. We cross-tabulated visit 4 ("current") BMI categories of normal weight, overweight, and obese with those at visit 1 (1987-1989) and with BMI categories calculated from self-reported weight at age 25 years...
November 20, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/29158250/increased-liver-fatty-acid-uptake-is-partly-reversed-and-liver-fat-content-normalized-after-bariatric-surgery
#14
Heidi Immonen, Jarna C Hannukainen, Nobuyuki Kudomi, Jussi Pihlajamäki, Virva Saunavaara, Jukka Laine, Paulina Salminen, Terho Lehtimäki, Tam Pham, Patricia Iozzo, Pirjo Nuutila
OBJECTIVE: Changes in liver fatty acid metabolism are important in understanding the mechanisms of diabetes remission and metabolic changes after bariatric surgery. RESEARCH DESIGN AND METHODS: Liver fatty acid uptake (LFU), blood flow, and fat content (LFC) were measured in 25 obese subjects before bariatric surgery and 6 months after using positron emission tomography/computed tomography and MRS; 14 lean individuals served as the control subjects. RESULTS: The increased LFU in obese subjects was associated with body adiposity...
November 20, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29158083/unc-5-netrin-receptor-b-mediates-osteogenic-differentiation-by-modulating-bone-morphogenetic-protein-signaling-in-human-adipose-derived-stem-cells
#15
Xinyi Hu, Yunsong Liu, Min Zhang, Yuejun Wang, Longwei Lv, Xiao Zhang, Ping Zhang, Yongsheng Zhou
UNC-5 netrin receptor B (UNC5B) is a dependence receptor of netrin-1 that plays an essential role in mediating angiogenesis and tumorigenesis. Despite its significant roles, there is limited knowledge about the role played by UNC5B in osteogenesis. In the present study, we first demonstrated that UNC5B was required for osteogenic differentiation of human adipose-derived stem cells (hASCs), both in vitro and in vivo. We also found that mechanistically, UNC5B promotes osteogenic differentiation by activating bone morphogenetic protein signaling...
November 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29157877/-treatment-of-wrinkles-of-the-upper-lip-by-emulsified-fat-or-nanofat-biological-and-clinical-study-about-4%C3%A2-cases
#16
F Mesguich Batel, B Bertrand, J Magalon, P François, M Velier, J Veran, S Mallet, E Jouve, F Sabatier, D Casanova
OBJECTIVE: Emulsified fat injection showed its interest in aesthetic facial surgery. The adipose tissue harvested is mechanically emulsified and filtered. The suspension obtained is injected into the dermis through small diameter needles (27 to 30 gauges). The objective of our study was to evaluate the biological composition of emulsified fat and its clinical effectiveness in the treatment of peri-oral wrinkles in 4 patients aged 50 to 59 years. MATERIAL AND METHOD: Each patient received an intradermal injection of emulsified fat in the peri-oral wrinkles prepared from abdominal fat under local anesthesia...
November 17, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/29157255/effects-of-antarctic-krill-oil-on-lipid-and-glucose-metabolism-in-c57bl-6j-mice-fed-with-high-fat-diet
#17
Dewei Sun, Liang Zhang, Hongjian Chen, Rong Feng, Peirang Cao, Yuanfa Liu
BACKGROUND: Obesity and other metabolic diseases have become epidemic which greatly affect human health. Diets with healthy nutrition are efficient means to prevent this epidemic occurrence. Novel food resources and process technology were needed for these purpose. In this study, Antarctic krill oil (KO) extracted from a dry krill by a procedure of hot pump dehydration in combined with freezing-drying was used to investigate health effect in animals including the growth, lipid and glucose metabolism...
November 21, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29156945/modulation-of-gene-expression-in-infrapatellar-fat-pad-derived-mesenchymal-stem-cells-in-osteoarthritis
#18
Beatriz Bravo, Jose Manuel Argüello, Arancha R Gortazar, Francisco Forriol, Javier Vaquero
Aim In the osteoarthritis (OA) disease, all structures of the joint are involved. The infrapatellar Hoffa fat pad is rich in macrophages and granulocytes, which also represents a source of adipose mesenchymal progenitor cells (ASC) cells. In our study, we analyze how OA affects the ability of ASC-derived from Hoffa's fat pad to differentiate into chondrocytes. Material and methodology We took knee Hoffa's pad samples and adipose tissue from the proximal thigh from 6 patients diagnosed with severe OA and from another 6 patients with an anterior cruciate ligament (ACL) rupture without OA...
January 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29156823/differential-activation-of-fyn-kinase-distinguishes-saturated-and-unsaturated-fats-in-mouse-macrophages
#19
Elena Tarabra, Ting-Wen An Lee, Victor A Zammit, Manu Vatish, Eijiro Yamada, Jeffrey E Pessin, Claire C Bastie
Diet-induced obesity is associated with increased adipose tissue activated macrophages. Yet, how macrophages integrate fatty acid (FA) signals remains unclear. We previously demonstrated that Fyn deficiency (fynKO) protects against high fat diet-induced adipose tissue macrophage accumulation. Herein, we show that inflammatory markers and reactive oxygen species are not induced in fynKO bone marrow-derived macrophages exposed to the saturated FA palmitate, suggesting that Fyn regulates macrophage function in response to FA signals...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156809/adipose-derived-stem-cells-seeded-bladder-acellular-matrix-graft-silk-fibroin-enhances-bladder-reconstruction-in-a-rat-model
#20
Dongdong Xiao, Qiong Wang, Hao Yan, Xiangguo Lv, Yang Zhao, Zhe Zhou, Ming Zhang, Qian Sun, Kang Sun, Wei Li, Mujun Lu
The unfavourable clinical outcomes of host cell-seeded scaffolds for bladder augmentation warrant improved bioactive biomaterials. This study aimed to examine the feasibility of adipose-derived stem cells (ASCs)-seeded bilayer bladder acellular matrix graft (BAMG)-silk fibroin (SF) scaffold in enhancing bladder reconstruction. Sprague Dawley rats were randomly divided into three groups: the BAMG-SF-ASCs group, the acellular BAMG-SF group and the cystotomy group. The BAMG-SF-ASCs group was sampled at 2, 4 and 12 weeks, and compared with the other groups at 12 weeks...
October 17, 2017: Oncotarget
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