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https://www.readbyqxmd.com/read/29353263/subcutaneous-adipose-tissue-biology-in-metabolic-syndrome
#1
REVIEW
Ishwarlal Jialal, Sridevi Devaraj
Metabolic syndrome (MetS) is a common global problem that comprises the cardio-metabolic cluster and predisposes to both diabetes and cardiovascular diseases. Although the pathogenic mechanisms have not been elucidated, both increased inflammation and insulin resistance play a pivotal role. It appears that both monocyte/macrophages and adipose tissue (AT) conspire to accentuate both the pro-inflammatory state and increased insulin resistance. Whilst there are scant data on visceral adipose tissue (VAT) and epicardial adipose tissue (EAT) biology, there are data on subcutaneous adipose tissue (SAT) dysregulation...
January 20, 2018: Hormone Molecular Biology and Clinical Investigation
https://www.readbyqxmd.com/read/29352150/identification-and-quantification-of-plasma-calciprotein-particles-with-distinct-physical-properties-in-patients-with-chronic-kidney-disease
#2
Yutaka Miura, Yoshitaka Iwazu, Kazuhiro Shiizaki, Tetsu Akimoto, Kazuhiko Kotani, Masahiko Kurabayashi, Hiroshi Kurosu, Makoto Kuro-O
Calciprotein particles (CPP) are solid-phase calcium-phosphate bound to serum protein fetuin-A and dispersed as colloids in the blood. Recent clinical studies indicated that serum CPP levels were increased with decline of renal function and associated with inflammation and vascular calcification. However, CPP assays used in these studies measured only a part of CPP over a certain particle size and density. Here we show that such CPP are mostly artifacts generated during processing of serum samples in vitro...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29333671/selective-enrichment-of-n-linked-glycopeptides-and-glycans-by-using-a-dextran-modified-hydrophilic-material
#3
Linlin Chen, Di Ding, Qianying Sheng, Long Yu, Xiuping Liu, Xinmiao Liang
Glycosylation analysis of proteins from biological sources utilizing mass-spectrometry-based approaches is challenging due to the relatively low abundance of glycopeptides, the structural diversity of glycans as well as the co-existing matrices. In this study, a customized dextran-bonded silica-based stationary phase was introduced for selective enrichment of glycopeptides and glycans from complex biological samples. This material has exhibited superior selectivity and broader glycosylation site coverage over commercial Sepharose in glycoproteomic evaluation...
January 15, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29329887/determination-of-n-glycans-by-high-performance-liquid-chromatography-using-6-aminoquinolyl-n-hydroxysuccinimidyl-carbamate-as-the-glycosylamine-labeling-reagent
#4
Yike Wu, Qiuyue Sha, Juan Du, Chang Wang, Liang Zhang, Bi-Feng Liu, Yawei Lin, Xin Liu
Robust, efficient identification and accurate quantification of N-glycans are of great significance in N-glycomics analysis. Here, a simple and rapid derivatization method, based on the combination of microwave-assisted deglycosylation and 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate (AQC) labeling, was developed for the analysis of N-glycan by high performance liquid chromatography with fluorescence detection (HPLC-FLD). After optimizing various parameters affecting deglycosylation and derivatization by RNase B, the time for N-glycan labeling was shortened to 50 min with ∼10-fold enhancement in detection sensitivity comparing to conventional 2-aminobenzoic acid (2-AA) labeling method...
January 8, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29306413/relative-quantitation-of-neutral-and-sialylated-n-glycans-using-stable-isotopic-labeled-d0-d5-benzoyl-chloride-by-maldi-ms
#5
Chang Wang, Yike Wu, Liang Zhang, Bi-Feng Liu, Yawei Lin, Xin Liu
Quantitative analysis of glycans is an emerging field in glycomic research. Herein we present a rapid and effective dual-labeling strategy, in the combination of isotopic derivatization of N-glycosylamine-based glycans by d0/d5-benzoyl chloride and methylamidation of sialic acids, to relatively quantify both neutral and sialylated N-glycans simultaneously by MALDI-MS. The derivatization efficiencies were increased by microwave-accelerated deglycosylation which not only largely reduce the time of glycoprotein deglycosylation but also inhibit the hydrolysis of intermediate glycosylamines produced by PNGase F digestion...
March 9, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29301790/chronic-kidney-disease-circulating-calciprotein-particles-and-extracellular-vesicles-promote-vascular-calcification-a-role-for-grp-gla-rich-protein
#6
Carla S B Viegas, Lúcia Santos, Anjos L Macedo, António A Matos, Ana P Silva, Pedro L Neves, An Staes, Kris Gevaert, Rute Morais, Cees Vermeer, Leon Schurgers, Dina C Simes
OBJECTIVE: Inhibition of mineral crystal formation is a crucial step in ectopic calcification. Serum calciprotein particles (CPPs) have been linked to chronic kidney disease (CKD) calcification propensity, but additional knowledge is required to understand their function, assemblage, and composition. The role of other circulating nanostructures, such as extracellular vesicles (EVs) in vascular calcification is currently unknown. Here, we investigated the association of GRP (Gla-rich protein) with circulating CPP and EVs and the role of CKD CPPs and EVs in vascular calcification...
January 4, 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29291018/serum-fetuin-a-level-is-associated-with-nonalcoholic-fatty-liver-disease-in-chinese-population
#7
Zhengsen Cui, Rong Xuan, Yunmei Yang
Objective: To investigate the association between serum fetuin A concentration and non-alcoholic fatty liver disease (NAFLD) in Chinese population. Methods: This case-control study enrolled 79 NAFLD cases and 79 non-NAFLD controls. All subjects were selected from Chinese population who received annual health examination in the First Affiliated Hospital of Zhejiang University in 2016. NAFLD was diagnosed mainly based on abdominal ultrasonography. The severity of NAFLD was categorized by serum level of alanine aminotransferase...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29288724/serum-fetuin-a-levels-in-patients-with-bilateral-basal-ganglia-calcification
#8
Bekir Enes Demiryurek, Asli Aksoy Gundogdu
BACKGROUND AND PURPOSE: The idiopathic basal ganglia calcification (Fahr syndrome) may occur due to senility. Fetuin-A is a negative acute phase reactant which inhibits calcium-phosphorus precipitation and vascular calcification. In this study, we aimed to evaluate whether serum fetuin-A levels correlate with bilateral basal ganglia calcification. METHOD: Forty-five patients who had bilateral basal ganglia calcification on brain CT were selected according to the inclusion and exclusion criteria, and 45 age and gender-matched subjects without basal ganglia calcification were included for the control group...
December 27, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29278516/serum-fetuin-a-levels-are-associated-with-serum-triglycerides-before-and-6-months-after-bariatric-surgery
#9
Christos G Verras, Georgios A Christou, Yannis V Simos, George D Ayiomamitis, Andreas J Melidonis, Dimitrios N Kiortsis
OBJECTIVE: The elucidation of the changes of fetuin-A in the context of bariatric surgery. DESIGN: Twenty obese patients (8 males, 12 females; body mass index = 42.5±3.4 kg/m2) were studied at baseline and 6 months after bariatric surgery. RESULTS: Serum fetuin-A levels did not differ with regard to the presence of each individual component of the Metabolic Syndrome (MetS) at baseline, except for hypertriglyceridaemia [increased serum fetuin-A levels (p=0...
July 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29274966/fetuin-a-a-negative-acute-phase-protein-linked-to-adipose-tissue-function-in-periparturient-dairy-cows
#10
Clarissa Strieder-Barboza, Jonas de Souza, William Raphael, Adam L Lock, G Andres Contreras
Fetuin-A (FetA) is a free fatty acid transporter and an acute-phase protein that enhances cellular lipid uptake and lipogenesis. In nonruminants, FetA is involved in lipid-induced inflammation. Despite FetA importance in lipid metabolism and inflammation, its expression and dynamics in adipose tissue (AT) of dairy cows are unknown. The objectives of this study were to (1) determine serum and AT FetA dynamics over the periparturient period and in mid-lactation cows in negative energy balance (NEB) after a feed restriction protocol and (2) characterize how an inflammatory challenge affects adipocyte FetA expression...
December 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29236151/the-effects-of-hap-and-macrophage-cells-to-the-expression-of-inflammatory-factors-and-apoptosis-in-hk-2-cells-of-vitro-co-cultured-system
#11
Junchuan Yu, Yaoliang Deng, Zhiwei Tao, Weixia Liang, Xiaofeng Guan, Jihua Wu, Xin Ning, Yunlong Liu, Quan Liu, Ziqi He
This study developed an in vitro system by co-culturing HK-2 cells with different concentration of hydroxyapatite (HAP) and/or macrophage cells to simulate the internal environment of urolithiasis as far as possible, investigating the regulatory effects of macrophage cells on HAP-induced expression of relative inflammatory factors of HK-2 cells. The control group (H group) was only comprised of HK-2 cells. Experimental groups included co-culturing HK-2 cells and macrophage cells (H + M group), co-culturing HK-2 cells and HAP (H + A group), co-culturing macrophage cells and HAP (M + A group), and co-culturing HK-2 cells and macrophage cells with HAP (H + M + A group)...
December 13, 2017: Urolithiasis
https://www.readbyqxmd.com/read/29233036/increased-levels-of-the-novel-hepatokine-fetuin-b-in-patients-with-intrahepatic-cholestasis-of-pregnancy
#12
Nadiye Koroglu, Ahmet Tayyar, Esra Nur Tola, Gonca Yetkin Yildirim, Ilkbal Temel Yuksel, Berna Aslan Cetin, Ismail Dag, Deniz Kanber Acar
OBJECTIVES: To investigate liver-derived plasma protein fetuin B levels in healthy pregnant women and pregnant women with intrahepatic cholestasis of pregnancy (ICP). MATERIALS AND METHODS: Forty women with ICP and 40 healthy pregnant women were included in this cross-sectional study. The serum fetuin B levels of these patients were analyzed. The patients were followed up to delivery. RESULTS: Maternal age, gravida, parity, BMI at assessment, and gestational age at blood sampling were similar between the ICP and control groups (p > ...
December 12, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29220580/the-influence-of-adiposity-and-acute-exercise-on-circulating-hepatokines-in-normal-weight-and-overweight-obese-men
#13
Jack A Sargeant, Guruprasad P Aithal, Toshinari Takamura, Hirofumi Misu, Hiroaki Takayama, Jessica A Douglas, Mark C Turner, David J Stensel, Myra A Nimmo, David R Webb, Thomas Yates, James A King
Hepatokines are liver-secreted proteins with potential to influence glucose regulation and other metabolic parameters. This study investigated differences in adiposity status on five novel hepatokines and characterised their response to acute moderate-intensity exercise in groups of normal weight and overweight/obese men. Twenty-two men were recruited into normal weight and overweight/obese groups (BMI: 18.5 to 24.9 and 25.0 to 34.9 kg∙m<sup>-2</sup>). Each completed two experimental trials, exercise and control...
December 8, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29212317/targeted-measurements-of-o-and-n-glycopeptides-show-that-proteins-in-hdl-particles-are-enriched-with-specific-glycosylation-compared-to-plasma
#14
Muchena J Kailemia, Wanghui Wei, Khoa Nguyen, Elizabeth Beals, Lisa Sawrey-Kubicek, Christopher Rhodes, Chenghao Zhu, Romina Sacchi, Angela M Zivkovic, Carlito B Lebrilla
High density lipoprotein (HDL) particles are believed to be protective due to their inverse correlation with the prevalence of cardiovascular diseases. However, recent studies show that in some conditions such as heart disease and diabetes, HDL particles can become dysfunctional. Great attention has been directed toward HDL particle composition because the relative abundances of HDL constituents determine HDL's functional properties. A key factor to consider when studying the structure and composition of plasma particles is the protein glycosylation...
December 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29207397/relationship-of-serum-fetuin-a-with-metabolic-and-clinical-parameters-in-german-children-and-adolescents-with-type-1-diabetes
#15
Christina Reinauer, Thomas Reinehr, Christina Baechle, Beate Karges, Julia Seyfarth, Katharina Foertsch, Martin Schebek, Joachim Woelfle, Michael Roden, Reinhard W Holl, Joachim Rosenbauer, Thomas Meissner
BACKGROUND AND AIM: The hepatokine fetuin A is upregulated in the metabolic syndrome and in type 2 diabetes (T2D), while its role in adolescent type 1 diabetes (T1D) is unclear. We assessed the relationship between circulating fetuin A levels and metabolic control, comorbidities, and complications in adolescent T1D patients. METHODS: We studied the relationship between serum fetuin A and clinical diabetes-related data from the DPV registry (Diabetes-Pa-tienten-Verlaufsdokumentation) in 172 adolescent T1D patients with early-onset (<5 years) long-standing (>10 years) T1D...
December 5, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29194974/serum-fetuin-b-is-positively-associated-with-intrahepatic-triglyceride-content-and-increases-the-risk-of-insulin-resistance-in-obese-chinese-adults-a-cross-sectional-study
#16
Dongmei Wang, Yijie Liu, Suhuan Liu, Lin Lin, Changqin Liu, Xiulin Shi, Zheng Chen, Mingzhu Lin, Shuyu Yang, Zhibin Li, Li Xuejun
BACKGROUND: Laboratory studies found Fetuin-B impaired insulin action in myotubes and hepatocytes and caused glucose intolerance in mice. We aimed to explore the correlation of serum Fetuin-B with intrahepatic triglyceride (IHTG) content and the association of Fetuin-B with the risk of insulin resistance in general adults. METHODS: A cross-sectional study of 1,318 obese adults who underwent serum Fetuin-B test and hepatic ultrasonography scanning was conducted in Xiamen, China...
December 1, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/29175481/purification-characterization-and-biological-effect-of-lectin-from-the-marine-sponge-stylissa-flexibilis-l%C3%A3-vi-1961
#17
Le Dinh Hung, Bui Minh Ly, Vo Thi Hao, Dinh Thanh Trung, Vo Thi Dieu Trang, Phan Thi Hoai Trinh, Ngo Thi Duy Ngoc, Thai Minh Quang
SFL, a lectin from the marine sponge Stylissa flexibilis was purified by cold ethanol precipitation followed by ion exchange chromatography on DEAE Sepharose column and Sephacryl S-200 gel filtration. SFL is a dimeric glycoprotein of 32kDa subunits linked by a disulfide bridge with a molecular mass of 64kDa by SDS-PAGE and 65kDa by Sephacryl S-200 gel filtration. SFL preferentially agglutinated enzyme treated human A erythrocytes. The activity of lectin was strongly inhibited by monosaccharide d-galactose and glycoproteins asialo-porcine stomach mucin and asialo-fetuin...
November 22, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29174342/serum-fetuin-a-levels-in-obese-and-non-obese-subjects-with-and-without-type-2-diabetes-mellitus
#18
Zhong-Wei Zhou, Hui-Xiang Ju, Ming-Zhong Sun, Hong-Mei Chen, Qing-Ping Fu, Dong-Mei Jiang
BACKGROUND: Higher fetuin-A expression is linked to both obesity and type 2 diabetes mellitus (T2DM), However, studies in non-obese patients with T2DM are scarce. METHODS: 345 newly diagnosed T2DM patients and 300 subjects with normal glucose tolerance (NGT) were divided into obese and non-obese subgroups, respectively. Serum fetuin-A and adiponectin levels and related parameters were measured. RESULTS: T2DM patients with obesity had higher fetuin-A levels compared with non-obese patients and obese NGT subjects (p<0...
November 22, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29167344/comparison-of-the-efficacy-of-n9-neuraminidase-specific-monoclonal-antibodies-against-influenza-a-h7n9-virus-infection
#19
Hongquan Wan, Li Qi, Jin Gao, Laura K Couzens, Lianlian Jiang, Yamei Gao, Zong-Mei Sheng, Sharon Fong, Megan Hahn, Surender Khurana, Jeffery K Taubenberger, Maryna C Eichelberger
The fifth wave of A(H7N9) virus infection in China from 2016 to 2017 caused great concern due to the large number of individuals infected, the isolation of drug-resistant viruses and emergence of highly pathogenic strains. Antibodies against neuraminidase (NA) provide added benefit to hemagglutinin-specific immunity and may be an important contributor to the effectiveness of A(H7N9) vaccines. We generated a panel of mouse monoclonal antibodies (MAbs) to identify antigenic domains on NA of the novel A(H7N9) virus and compared their functional properties...
November 22, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29158128/fullerene-pamam-g5-composite-modified-impedimetric-biosensor-to-detect-fetuin-a-in-real-blood-samples
#20
Zihni Onur Uygun, Çağdaş Şahin, Merve Yilmaz, Yasemin Akçay, Ali Akdemir, Ferhan Sağin
The aim of this study is to develop a nanomaterial-dendrimer composite modified biosensor to detect Fetuin-A (HFA) in real blood samples. For this purpose, we designed an Electrochemical Impedance Spectroscopy (EIS) based anti-Fetuin-A (Anti-HFA) modified biosensor system and tested in real blood samples. Chronoimpedance was also employed. The same samples were analyzed with ELISA and the results were compared for validation of the new system. Gold screen printed electrodes (AuSPE) were used as transducer. Firstly, a self-assembly monolayer (SAM) was formed on gold surface by 4-aminothiophenol (4-ATP), Fullerene and PAMAM-NH2 (G5), layers were formed, consecutively...
November 17, 2017: Analytical Biochemistry
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