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Low-grade inflammation

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https://www.readbyqxmd.com/read/29352728/differential-proteomic-analysis-of-synovial-fluid-from-hip-arthroplasty-patients-with-a-pseudotumor-vs-periprosthetic-osteolysis
#1
Isabelle Catelas, Eric A Lehoux, Zhibin Ning, Daniel Figeys, Stephen J Baskey, Paul E Beaulé
Adverse tissue reactions to metal implants, including pseudotumors, can compromise implant functionality and survivorship. The identification of specific proteins in the synovial fluid (SF) of hip arthroplasty patients with a pseudotumor may lead to a better understanding of the underlying pathomechanisms. The objective of the present study was to compare the protein content of SF from patients with a short-term metal-on-metal hip implant associated with a pseudotumor and patients with a long-term metal-on-polyethylene hip implant associated with periprosthetic osteolysis...
January 20, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29352395/association-between-crp-genetic-diversity-and-bipolar-disorder-comorbid-complications
#2
Wahid Boukouaci, José Oliveira, Bruno Etain, Meriem Bennabi, Christina Mariaselvam, Nora Hamdani, Céline Manier, Djaouida Bengoufa, Frank Bellivier, Chantal Henry, Jean-Pierre Kahn, Dominique Charron, Rajagopal Krishnamoorthy, Marion Leboyer, Ryad Tamouza
BACKGROUND: Chronic low-grade inflammation is believed to contribute, at least in a subset of patients, to the development of bipolar disorder (BD). In this context, the most investigated biological marker is the acute phase response molecule, C-reactive protein (CRP). While the genetic diversity of CRP was amply studied in various pathological settings, little is known in BD. METHODS: 568 BD patients along with 163 healthy controls (HC) were genotyped for the following single-nucleotide polymorphisms (SNPs) on the CRP gene: intron rs1417938 (+ 29) T/A, 3'-UTR rs1130864 (+ 1444) G/A, and downstream rs1205 (+ 1846) (C/T)...
January 20, 2018: International Journal of Bipolar Disorders
https://www.readbyqxmd.com/read/29351480/mechanistically-different-effects-of-fat-and-sugar-on-insulin-resistance-hypertension-and-gut-microbiota-in-rats
#3
Sara Ramos-Romero, Mercè Hereu, Lidia Atienza, Josefina Casas, Olga Jáuregui, Susana Amézqueta, Gabriel Dasilva, Isabel Medina, Maria Rosa Nogués, Marta Romeu, Josep Lluís Torres
Insulin resistance (IR) and impaired glucose tolerance (IGT) are the first manifestations of diet-induced metabolic alterations leading to type-2 diabetes, while hypertension is the deadliest risk factor of cardiovascular disease. The roles of dietary fat and fructose in the development of IR, IGT and hypertension are controversial. We tested the long-term effects of an excess of fat or sucrose (fructose/glucose) on healthy male Wistar Kyoto (WKY) rats. Fat affects IR and IGT earlier than fructose through low-grade systemic inflammation evidenced by liver inflammatory infiltration, increased levels of plasma interleukin-6, prostaglandin E2 and reduced levels of protective short-chain fatty acids without triggering hypertension...
January 2, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29348847/distinct-roles-of-traf6-and-tak1-in-the-regulation-of-adipocyte-survival-thermogenesis-program-and-high-fat-diet-induced-obesity
#4
Yann S Gallot, Joseph D McMillan, Guangyan Xiong, Kyle R Bohnert, Alex R Straughn, Bradford G Hill, Ashok Kumar
Chronic low-grade inflammation, adipocyte hypertrophy, and glucose intolerance are common features of obesity and a risk factor for cancer. Tumor necrosis factor (TNF) receptor-associated factor 6 (TRAF6) is an adaptor protein that also possesses a non-conventional E3 ubiquitin ligase activity. In response to receptor-mediated events, TRAF6 activates transforming growth factor-activated kinase 1 (TAK1), which leads to activation of the MAPK and nuclear factor-kappa B (NF-κB) signaling pathways. However, the roles of TRAF6 and TAK1 in the regulation of adipocyte function remain less understood...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29348619/cytokine-mediated-changes-in-k-channel-activity-promotes-an-adaptive-ca2-response-that-sustains-%C3%AE-cell-insulin-secretion-during-inflammation
#5
Matthew T Dickerson, Avery M Bogart, Molly K Altman, Sarah C Milian, Kelli L Jordan, Prasanna K Dadi, David A Jacobson
Cytokines present during low-grade inflammation contribute to β-cell dysfunction and diabetes. Cytokine signaling disrupts β-cell glucose-stimulated Ca2+ influx (GSCI) and endoplasmic reticulum (ER) Ca2+ ([Ca2+]ER) handling, leading to diminished glucose-stimulated insulin secretion (GSIS). However, cytokine-mediated changes in ion channel activity that alter β-cell Ca2+ handling remain unknown. Here we investigated the role of K+ currents in cytokine-mediated β-cell dysfunction. Kslow currents, which control the termination of intracellular Ca2+ ([Ca2+]i) oscillations, were reduced following cytokine exposure...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29345342/high-fat-diet-and-leptin-promote-tumor-progression-by-inducing-myeloid-derived-suppressor-cells
#6
Virginia K Clements, Tiha Long, Ramses Long, Chas Figley, Daniel M C Smith, Suzanne Ostrand-Rosenberg
Obesity is a risk factor for cancer incidence and cancer mortality. The association of obesity and cancer is attributed to multiple factors, but the tightest linkage is with the chronic, low-grade inflammation that accompanies obesity. Myeloid-derived suppressor cells (MDSC) are known facilitators of cancer progression that act by suppressing the activation and function of tumor-reactive T cells. Because MDSC quantity and function are driven by chronic inflammation, we hypothesized that MDSC may accumulate in obese individuals and facilitate tumor growth by suppressing antitumor immunity...
January 3, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29343510/limited-radiographic-progression-and-sustained-reductions-in-mri-inflammation-in-patients-with-axial-spondyloarthritis-4-year-imaging-outcomes-from-the-rapid-axspa-phase-iii-randomised-trial
#7
Désirée van der Heijde, Xenofon Baraliakos, Kay-Geert A Hermann, Robert B M Landewé, Pedro M Machado, Walter P Maksymowych, Owen R Davies, Natasha de Peyrecave, Bengt Hoepken, Lars Bauer, Tommi Nurminen, Juergen Braun
OBJECTIVES: To report 4-year imaging outcomes in the RAPID-axSpA (NCT01087762) study of patients with ankylosing spondylitis (AS) and non-radiographic axial spondyloarthritis (nr-axSpA), treated with certolizumab pegol (CZP). METHODS: This phase III, randomised trial was placebo-controlled and double-blind to week 24, dose-blind to week 48 and open-label to week 204. Patients fulfilling the Assessment of Spondyloarthritis International Society (ASAS) axSpA criteria with active disease were stratified (AS/nr-axSpA) according to the modified New York (mNY) criteria at randomisation...
January 17, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29342196/low-fitness-is-associated-with-abdominal-adiposity-and-low-grade-inflammation-independent-of-bmi
#8
Anne-Sophie Wedell-Neergaard, Louise Eriksen, Morten Grønbæk, Bente Klarlund Pedersen, Rikke Krogh-Madsen, Janne Tolstrup
OBJECTIVE: Up to 30% of obese individuals are metabolically healthy. Metabolically healthy obese (MHO) individuals are characterized by having low abdominal adiposity, low inflammation level and low risk of developing metabolic comorbidity. In this study, we hypothesize that cardiorespiratory fitness (fitness) is a determinant factor for the MHO individuals and aim to investigate the associations between fitness, abdominal adiposity and low-grade inflammation within different BMI categories...
2018: PloS One
https://www.readbyqxmd.com/read/29342113/mitochondria-oxidative-stress-and-the-kynurenine-system-with-a-focus-on-ageing-and-neuroprotection
#9
REVIEW
Katalin Sas, Elza Szabó, László Vécsei
In this review, the potential causes of ageing are discussed. We seek to gain insight into the main physiological functions of mitochondria and discuss alterations in their function and the genome, which are supposed to be the central mechanisms in senescence. We conclude by presenting the potential modulating role of the kynurenine pathway in the ageing processes. Mitochondrial dynamics are supposed to have important physiological roles in maintaining cell homeostasis. During ageing, a decrease in mitochondrial dynamics was reported, potentially compromising the function of mitochondria...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29338886/overweight-and-obesity-status-in-pregnant-women-are-related-to-intestinal-microbiota-and-serum-metabolic-and-inflammatory-profiles
#10
Noora Houttu, Kati Mokkala, Kirsi Laitinen
BACKGROUND: Overweight and obesity may predispose women to clinical complications during their pregnancy. We hypothesize that a higher degree of overweight status is related to a range of aberrations in biomarkers already in early pregnancy. Our objective was to investigate whether intestinal microbiota, serum metabolic and inflammatory profiles differ in relation to the degree of overweight status in pregnant women. METHODS: This study investigated 52 overweight and 47 obese pregnant women in early pregnancy...
December 27, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29337272/circulating-adipokines-and-mrna-expression-in-adipose-tissue-and-the-placenta-in-women-with-gestational-diabetes-mellitus
#11
Panayoula C Tsiotra, Panagiotis Halvatsiotis, Konstantinos Patsouras, Eirini Maratou, George Salamalekis, Sotirios A Raptis, George Dimitriadis, Eleni Boutati
Maternal adipose tissue and the placenta secrete various molecules commonly called adipokines such as chemerin, omentin-1, visfatin, adiponectin, and leptin that are important players in the pathogenesis of insulin resistance. Gestational diabetes mellitus (GDM) is defined as a state of glucose intolerance characterized by β-cell dysfunction and insulin resistance. To examine whether circulating adipokines and their mRNA expression in the adipose tissue and the placenta are altered in GDM pregnancy, we compared 15 GDM women [obese (BMI > 30) and non-obese (BMI < 30)] to 23 NGT (normal glucose tolerance) women [obese and non-obese], at the time of the Cesarean section...
January 11, 2018: Peptides
https://www.readbyqxmd.com/read/29334696/mast-cells-participate-in-chronic-low-grade-inflammation-within-adipose-tissue
#12
REVIEW
P Żelechowska, J Agier, E Kozłowska, E Brzezińska-Błaszczyk
Obesity is reckoned as one of the civilization diseases, posing a considerable global health issue. Evidence points towards a contribution of multitude immune cell populations in obesity pathomechanism and the development of chronic low-grade inflammation in the expanded adipose tissue. Notably, adipose tissue is a reservoir of mast cells which number in individuals with obesity particularly increased. Some of them tend to degranulation what generate secretion of strong pro-inflammatory and regulatory mediators, as well as cytokines/chemokines...
January 15, 2018: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29333574/unique-metabolic-activation-of-adipose-tissue-macrophages-in-obesity-promotes-inflammatory-responses
#13
Lily Boutens, Guido J Hooiveld, Sourabh Dhingra, Robert A Cramer, Mihai G Netea, Rinke Stienstra
AIMS/HYPOTHESIS: Recent studies have identified intracellular metabolism as a fundamental determinant of macrophage function. In obesity, proinflammatory macrophages accumulate in adipose tissue and trigger chronic low-grade inflammation, that promotes the development of systemic insulin resistance, yet changes in their intracellular energy metabolism are currently unknown. We therefore set out to study metabolic signatures of adipose tissue macrophages (ATMs) in lean and obese conditions...
January 14, 2018: Diabetologia
https://www.readbyqxmd.com/read/29333376/anti-inflammatory-and-anti-obesity-properties-of-food-bioactive-components-effects-on-adipose-tissue
#14
REVIEW
Shasika Jayarathne, Iurii Koboziev, Oak-Hee Park, Wilna Oldewage-Theron, Chwan-Li Shen, Naima Moustaid-Moussa
Obesity is an epidemic and costly disease affecting 13% of the adult population worldwide. Obesity is associated with adipose tissue hypertrophy and hyperplasia, as well as pathologic endocrine alterations of adipose tissue including local and chronic systemic low-grade inflammation. Moreover, this inflammation is a risk factor for both metabolic syndrome (MetS) and insulin resistance. Basic and clinical studies demonstrate that foods containing bioactive compounds are capable of preventing both obesity and adipose tissue inflammation, improving obesity-associated MetS in human subjects and animal models of obesity...
December 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/29331565/saroglitazar-reduces-obesity-and-associated-inflammatory-consequences-in-murine-adipose-tissue
#15
Durgesh Kumar, Umesh Kumar Goand, Sanchita Gupta, Kripa Shankar, Salil Varshney, Sujith Rajan, Ankita Srivastava, Abhishek Gupta, Achchhe Lal Vishwakarma, Anurag Kumar Srivastava, Anil N Gaikwad
Prevailing knowledge links chronic low-grade inflammation in the adipose tissue to obesity and its associated metabolic complications. In this study, we evaluated immunometabolic effects of a recently launched dual peroxisome proliferator-activated receptor (PPAR) α & γ agonist 'Saroglitazar' in a mouse model of diet-induced obesity (DIO). Body composition analysis revealed that saroglitazar treatment promoted hepatic weight gain, while attenuated epididymal white adipose tissue (eWAT) mass in DIO. In the eWAT of saroglitazar treated mice, histological analysis showed reduced adipocyte hypertrophy and matrix deposition (picrosirius red staining)...
January 10, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29329795/omega-3-fatty-acids-and-adipose-tissue-biology
#16
REVIEW
Ondrej Kuda, Martin Rossmeisl, Jan Kopecky
This review provides evidence for the importance of white and brown adipose tissue (i.e. WAT and BAT) function for the maintenance of healthy metabolic phenotype and its preservation in response to omega-3 polyunsaturated fatty acids (omega-3 PUFA), namely in the context of diseased states linked to aberrant accumulation of body fat, systemic low-grade inflammation, dyslipidemia and insulin resistance. More specifically, the review deals with (i) the concept of immunometabolism, i.e. how adipose-resident immune cells and adipocytes affect each other and define the immune-metabolic interface; and (ii) the characteristic features of "healthy adipocytes" in WAT, which are relatively small fat cells endowed with a high capacity for mitochondrial oxidative phosphorylation, triacylglycerol/fatty acid (TAG/FA) cycling and de novo lipogenesis (DNL)...
January 9, 2018: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29329680/correlation-of-severity-of-chronic-obstructive-pulmonary-disease-with-potential-biomarkers
#17
Seema Singh, S K Verma, Santosh Kumar, M K Ahmad, Anuradha Nischal, S K Singh, R K Dixit
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is a non-specific inflammation, which involves the airways, lung parenchyma and pulmonary vessels. The inflammation causes the activation of inflammatory cells and the release of various inflammatory mediators such as interleukin-1 beta, interleukin-6 and tumor necrosis factor alpha (TNF-a). The present study was designed to assess the serum cytokines [Interleukin-1β (IL-1β), Interleukin-6 (IL-6), Tumor necrosis factor-α (TNF-α)] levels in chronic obstructive pulmonary disease (COPD) patients and they were correlated with severity of disease by spirometric measurements...
January 9, 2018: Immunology Letters
https://www.readbyqxmd.com/read/29329362/clostridium-butyricum-regulates-visceral-hypersensitivity-of-irritable-bowel-syndrome-by-inhibiting-colonic-mucous-low-grade-inflammation-through-its-action-on-nlrp6
#18
Kejia Zhao, Leimin Yu, Xi Wang, Yibo He, Bin Lu
Visceral hypersensitivity induced by stress is quite common in irritable bowel syndrome (IBS) patients. Probiotics play an important role in reducing visceral hypersensitivity in IBS patients. However, the mechanism has not been clearly elucidated. In this study, we investigated the role of nod-like receptor pyrin domain-containing protein 6 (NLRP6) in Clostridium butyricum-regulated IBS induced by stress. Our results showed that NLRP6 was down-regulated in IBS group colon tissues. In addition, IL-18, IL-1β, myeloperoxidase (MPO), d-lactic acid (D-LA), and CD172a were up-regulated in the IBS group of colonic mucous...
January 10, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29327435/impact-of-dietary-induced-precocious-gut-maturation-on-cecal-microbiota-and-its-relation-to-the-blood-brain-barrier-during-the-postnatal-period-in-rats
#19
N Marungruang, E Arévalo Sureda, A Lefrançoise, B Weström, M Nyman, O Prykhodko, F Fåk Hållenius
BACKGROUND: Precocious maturation of the gastrointestinal barrier (GIB) in newborn mammals can be induced by dietary provocation, but how this affects the gut microbiota and the gut-brain axis remains unknown. The objective of this study was to investigate effects of induced GIB maturation on gut microbiota composition and blood-brain barrier (BBB) permeability. METHODS: Suckling rats were studied at 72 h after gavage with phytohemagglutinin (PHA) or microbial protease (PT) to induce maturation of GIB...
January 12, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29325459/is-cord-blood-hepcidin-influenced-by-the-low-grade-acute-phase-response-occurring-during-delivery-%C3%A2-a-small-scale-longitudinal-study
#20
Michael Hoppe, Lena Hulthén, Gösta Samuelson
AIM: To measure serum hepcidin in late pregnancy and in cord blood, and to analyze relationship between hepcidin, interleukin-6 and biomarkers of fetal iron status. MATERIALS AND METHODS: Data from 15 uncomplicated singleton pregnancies were analyzed longitudinally in trimester 3 (T3) and at birth. RESULTS: In T3, S-ferritin (median 14 µg/L) and transferrin (median 4.0 g/L) indicated low iron status, whereas the median soluble transferrin receptor (sTfR) was 4...
January 11, 2018: Journal of Maternal-fetal & Neonatal Medicine
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