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https://www.readbyqxmd.com/read/28212715/novel-biomarkers-of-heart-failure
#1
A Savic-Radojevic, M Pljesa-Ercegovac, M Matic, D Simic, S Radovanovic, T Simic
Although substantial improvements have been made in majority of cardiac disorders, heart failure (HF) remains a major health problem, with both increasing incidence and prevalence over the past decades. For that reason, the number of potential biomarkers that could contribute to diagnosis and treatment of HF patients is, almost exponentially, increasing over the recent years. The biomarkers that are, at the moment, more or less ready for use in everyday clinical practice, reflect different pathophysiological processes present in HF...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28196513/metabotropic-glutamate-receptor-5-may-be-involved-in-macrophage-plasticity
#2
Lali Shanshiashvili, Elene Tsitsilashvili, Nino Dabrundashvili, Irine Kalandadze, David Mikeladze
BACKGROUND: Macrophages are a functionally heterogeneous cell population and depending on microenvironments they polarize in two main groups: M1 and M2. Glutamic acid and glutamate receptors may participate in the regulation of macrophage plasticity. To investigate the role of glutamatergic systems in macrophages physiology, we performed the transfection of mGluR5 cDNAs into RAW-264.7 cells. RESULTS: Comparative analysis of modified (RAW-mGluR5 macrophages) and non-modified macrophages (RAW-macrophages) has shown that the RAW-mGluR5 macrophages absorbed more glutamate than control cells and the amount of intracellular glutamate correlated with the expression of excitatory amino acid transporters -2 (EAAT-2)...
February 14, 2017: Biological Research
https://www.readbyqxmd.com/read/28193861/galectin-3-directs-antimicrobial-guanylate-binding-proteins-to-vacuoles-furnished-with-bacterial-secretion-systems
#3
Eric M Feeley, Danielle M Pilla-Moffett, Erin E Zwack, Anthony S Piro, Ryan Finethy, Joseph P Kolb, Jennifer Martinez, Igor E Brodsky, Jörn Coers
Many invasive bacteria establish pathogen-containing vacuoles (PVs) as intracellular niches for microbial growth. Immunity to these infections is dependent on the ability of host cells to recognize PVs as targets for host defense. The delivery of several host defense proteins to PVs is controlled by IFN-inducible guanylate binding proteins (GBPs), which themselves dock to PVs through poorly characterized mechanisms. Here, we demonstrate that GBPs detect the presence of bacterial protein secretion systems as "patterns of pathogenesis" associated with PVs...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28185839/hypermethylation-of-the-galectin-3-promoter-is-associated-with-poor-prognosis-of-acute-on-chronic-hepatitis-b-liver-failure
#4
Jing Zhao, Yu-Chen Fan, Xin-Yuan Liu, Ze-Hua Zhao, Feng Li, Kai Wang
BACKGROUND AND AIMS: The possible role of galectin-3 in acute-on-chronic hepatitis B liver failure (ACHBLF) remains unknown. This study aimed to determine the methylation status of the galectin-3 promoter in patients with ACHBLF and analyze its prognostic value. METHODS: The methylation status of the galectin-3 promoter in patients with ACHBLF, chronic hepatitis B (CHB) and healthy controls (HCs) was determined by methylation-specific polymerase chain reaction (MSP)...
January 22, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28166391/lactosamine-based-derivatives-as-tools-to-delineate-the-biological-functions-of-galectins-application-to-skin-tissue-repair
#5
Cyrille Grandjean, Johann Dion, Frédérique Deshayes, Nataliya Storozhylova, Tamara Advedissian, Annie Lambert, Mireille Viguier, Charles Tellier, Christophe Dussouy, Françoise Poirier
Galectins have been recognized as potential novel therapeutic targets in connection with the numerous fundamental biological processes which they are involved in. Galectins are key players of homeostasis and as such, their expression and function are finely tuned in vivo. As a consequence, their modes of action are complex and remain largely unexplored partly due the lack of dedicated tools. We thus thought to design galectin inhibitors from lactosamine core, functionalized at key C2 and C3' positions by aromatic subsituents to ensure both high affinity and selectivity, and equipped with a spacer which can be modified on demand to further modulate their intrinsic physico-chemical properties...
February 6, 2017: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/28164491/testing-for-soluble-st2-in-heart-failure-patients-reliability-of-a-point-of-care-method
#6
Damien Gruson, Benjamin Ferracin, Sylvie A Ahn, Michel F Rousseau
BACKGROUND: Our objective was to determine soluble ST2 (sST2) concentrations in heart failure (HF) patients with a point-of-care (POCT) assay. METHODS: sST2 levels were measured in 71 HF patients with both POCT and ELISA methods. The concentrations of sST2 were correlated to HF severity and to some established biomarkers of cardiovascular risk. RESULTS: sST2 levels measured with the ASPECT-PLUS POCT method were significantly correlated with the comparison ELISA assay (r = 0...
January 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28160109/antimetastatic-pectic-polysaccharide-from-decalepis-hamiltonii-galectin-3-inhibition-and-immune-modulation
#7
Sathisha U Venkateshaiah, Mallikarjuna S Eswaraiah, Harish Nayaka M Annaiah, Shylaja M Dharmesh
Melanoma is a malignant neoplasm of major concern because of its high mortality rate and failure of chemotherapy. Previously we have shown that galectin-3, a galactose specific lectin, plays a pivotal role in the initiation of metastasis. It was hypothesized that blocking galectin-3 with galactose rich dietary pectic polymer would inhibit metastasis. The current study analyzes the preventive effect and mode of action of a pectic polymer from Swallow Root (Decalepis hamiltonii) in a preventative study of B16F10 cells lung colonization...
February 3, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28157210/modulation-of-macrophage-antitumor-potential-by-apoptotic-lymphoma-cells
#8
Jorine J L P Voss, Catriona A Ford, Sofia Petrova, Lynsey Melville, Margaret Paterson, John D Pound, Pam Holland, Bruno Giotti, Tom C Freeman, Christopher D Gregory
In aggressive non-Hodgkin's lymphoma (NHL), constitutive apoptosis of a proportion of the tumor cell population can promote net tumor growth. This is associated with the accumulation of tumor-associated macrophages (TAMs) that clear apoptotic cells and exhibit pro-oncogenic transcriptional activation profiles characteristic of reparatory, anti-inflammatory and angiogenic programs. Here we consider further the activation status of these TAMs. We compare their transcriptomic profile with that of a range of other macrophage types from various tissues noting especially their expression of classically activated (IFN-γ and LPS) gene clusters - typically antitumor - in addition to their previously described protumor phenotype...
February 3, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28152393/molecular-cloning-characterization-and-expression-analysis-of-tim-3-and-galectin-9-in-the-woodchuck-model
#9
Yanan Liu, Junzhong Wang, Lu Wang, Baoju Wang, Shangqing Yang, Qin Wang, Jinzhuo Luo, Xuemei Feng, Xuecheng Yang, Yinping Lu, Michael Roggendorf, Mengji Lu, Dongliang Yang, Jia Liu
In recent years, a critical role for T cell immunoglobulin mucin domain 3 (Tim-3) and its ligand Galectin-9 (Gal-9) has emerged in infectious disease, autoimmunity and cancer. Manipulating this immune checkpoint may have immunotherapeutic potential and could represent an alternative approach for improving immune responses to viral infections and cancer. The woodchuck (Marmot monax) infected by woodchuck hepatitis virus (WHV) represents an informative animal model to study HBV infection and HCC. In the current study, the cDNA sequences of woodchuck Tim-3 and Gal-9 were cloned, sequenced and characterized...
January 30, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28150280/galectin-3-is-associated-with-coronary-plaque-burden-and-obstructive-sleep-apnea-syndrome-severity
#10
Hamdi Pusuroglu, Umut Somuncu, Ismail Bolat, Ozgur Akgul, Vesile Ornek, Hayriye Ak Yıldırım, Emre Akkaya, Huseyin Karakurt, Aydın Yıldırım, Ayfer Utku Savaş
BACKGROUND: Obstructive sleep apnea syndrome (OSAS) is reported to be associated with hypertension, coronary artery disease, atrial fibrillation, and heart failure. Galectin-3 plays an important role in the regulation of inflammation, development of cardiac fibrosis and remodeling. A significant relationship between galectin-3 and the total number of coronary plaques and the macrocalcified plaque structures of patients with type 2 DM has been reported. AIM: The aim of this study was to investigate the association between galectin-3 level and coronary plaque burden as well as OSAS severity in patients with obstructive sleep apnea syndrome...
February 2, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28146425/posttranscriptional-regulation-of-galectin-3-by-mir-128-contributes-to-colorectal-cancer-progression
#11
Weiqun Lu, Jia Wang, Guohua Yang, Nanrong Yu, Zhiliang Huang, Houwei Xu, Jianchang Li, Jiliang Qiu, Xiang Zeng, Shicai Chen, Nan Li, Haiying Liu
Here we demonstrated that Galectin-3 protein level was frequently up-regulated in colorectal cancer (CRC) cells and tissues. Galectin-3 up-regulation correlated with CRC progression and predicted a shorter overall survival of CRC patients. Galectin-3 overexpression attenuated the chemo-sensitivity of cancer cells, but enhanced the potential invasiveness. To explore the mechanism for Galectin-3 dysregulation, we found that miR-128 level was frequently down-regulated in CRC and negatively correlated with Galectin-3 level...
January 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28134562/inflammatory-biomarkers-and-effect-of-exercise-on-functional-capacity-in-patients-with-heart-failure-insights-from-a-randomized-clinical-trial
#12
Miguel M Fernandes-Silva, Guilherme V Guimarães, Vagner Oc Rigaud, Marco S Lofrano-Alves, Rafael E Castro, Lais G de Barros Cruz, Edimar A Bocchi, Fernando Bacal
Background In patients with heart failure, inflammation has been associated with worse functional capacity, but it is uncertain whether it could affect their response to exercise training. We evaluated whether inflammatory biomarkers are related to differential effect of exercise on the peak oxygen uptake (V˙O2) among patients with heart failure. Design Open, parallel group, randomized controlled trial. Methods Patients with heart failure and ejection fraction ≤0.4 were randomized into exercise training or control for 12 weeks...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28133908/a-multimarker-multi-time-point-based-risk-stratification-strategy-in-acute-heart-failure-results-from-the-relax-ahf-trial
#13
Biniyam G Demissei, Gad Cotter, Margaret F Prescott, G Michael Felker, Gerasimos Filippatos, Barry H Greenberg, Peter S Pang, Piotr Ponikowski, Thomas M Severin, Yi Wang, Min Qian, John R Teerlink, Marco Metra, Beth A Davison, Adriaan A Voors
AIMS: We evaluated the added prognostic value of a multi-time point-based multimarker panel of biomarkers in patients with acute heart failure (AHF). METHODS AND RESULTS: Seven circulating biomarkers [NT-proBNP, high sensitivity cardiac troponin T (hs-cTnT), soluble ST2 (sST2), growth differentiation factor 15 (GDF-15), cystatin-C, galectin-3, and high sensitivity C-reactive protein (hs-CRP)] were measured at baseline and on days 2, 5, 14, and 60 in 1161 patients enrolled in the RELAX-AHF trial...
January 30, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28132041/-galectin-3-level-in-patients-with-acute-myocardial-infarction-and-obesity-of-different-grade-of-severity-link-with-anthropometry
#14
K Borovyk, N Ryndina, P Kravchun
The im is to estimate the concentration of galectin-3 in patients with acute myocardial infarction depending on the presence of overweight and obesity of different severity, as well as to analyze the character of the relationship of this parameter with the anthropometric indices. The study involved 78 patients with acute myocardial infarction. The study group included 55 patients with acute myocardial infarction and concomitant obesity. The control group consisted of 23 patients with acute myocardial infarction and normal body weight...
December 2016: Georgian Medical News
https://www.readbyqxmd.com/read/28128358/galectin-3-released-in-response-to-traumatic-brain-injury-acts-as-an-alarmin-orchestrating-brain-immune-response-and-promoting-neurodegeneration
#15
Ping Kei Yip, Alejandro Carrillo-Jimenez, Paul King, Anna Vilalta, Koji Nomura, Chi Cheng Chau, Alexander Michael Scott Egerton, Zhuo-Hao Liu, Ashray Jayaram Shetty, Jordi L Tremoleda, Meirion Davies, Tomas Deierborg, John V Priestley, Guy Charles Brown, Adina Teodora Michael-Titus, Jose Luis Venero, Miguel Angel Burguillos
Traumatic brain injury (TBI) is currently a major cause of morbidity and poor quality of life in Western society, with an estimate of 2.5 million people affected per year in Europe, indicating the need for advances in TBI treatment. Within the first 24 h after TBI, several inflammatory response factors become upregulated, including the lectin galectin-3. In this study, using a controlled cortical impact (CCI) model of head injury, we show a large increase in the expression of galectin-3 in microglia and also an increase in the released form of galectin-3 in the cerebrospinal fluid (CSF) 24 h after head injury...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28115100/pectic-oligosaccharide-from-tomato-exhibiting-anticancer-potential-on-a-gastric-cancer-cell-line-structure-function-relationship
#16
Sabeeta Kapoor, Shylaja M Dharmesh
Pectic Polysaccharide (PP) from dietary sources has been known to prevent cancer growth and hence impede cancer progression. We evaluated anticancer effect of Pectic-Oligosaccharide isolated from Sour Raw Tomato (SrTPO); its bioavailability and structure elucidated from purified fraction (SrTPO1). SrTPO1 inhibited galectin-3 activity with MIC of 0.25 ug/mL (100 fold better than standard galactose), inhibited the growth of AGS cells (IC50 3.4μg/mL) and induced apoptosis (70% inhibition at 30μg/mL concentration)...
March 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28112232/serum-levels-of-galectin-1-galectin-3-and-galectin-9-are-associated-with-large-artery-atherosclerotic-stroke
#17
Xin-Wei He, Wei-Ling Li, Cai Li, Peng Liu, Yu-Guang Shen, Min Zhu, Xiao-Ping Jin
The aim of this study was to assess the expression patterns of serum galectin-1 (Gal-1), galectin-3 (Gal-3), galectin-9 (Gal-9), and galectin-3 binding protein (Gal-3BP) and their associations with stroke outcome in large artery atherosclerotic (LAA) stroke. The serum levels of Gal-1, Gal-3, Gal-9, and Gal-3BP were measured by ELISA in 130 patients with LAA stroke and 130 age- and sex-matched controls. Serum samples were collected from the patients on day 1, day 6, and in the 4th week after ischaemic stroke (IS)...
January 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28110209/expansion-of-cd11b-ly-6c-myeloid-derived-suppressor-cells-mdscs-driven-by-galectin-9-attenuates-cvb3-induced-myocarditis
#18
Yingying Zhang, Mengying Zhang, Xueqin Li, Zongsheng Tang, Ling He, Kun Lv
Galectin-9 is known to play a role in the modulation of innate and adaptive immunity to ameliorate CVB3-induced myocarditis. In the present study, we found that galectin-9 induced the expansion of CD11b(+)Ly-6C(+) myeloid-derived suppressor cells (MDSCs) in the heart from CVB3-infected mice. Adoptive transfer of CD11b(+)Ly-6C(+) MDSCs significantly alleviated myocarditis accompanied by increased Th2 and Treg frequency and anti-inflammatory cytokines expression in the heart tissue. Moreover, Ly6C(+) MDSCs, but not Ly6G(+) cells, expressed Arg-1 and NOS2, and suppressed CD4(+) T cell proliferation in vitro in an Arg-1-dependent mechanism; an event that was reversed with treatment of either an Arg-1 inhibitor or addition of excess l-arginine...
January 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28108653/galectin-1-expression-is-associated-with-tumour-immunity-and-prognosis-in-gingival-squamous-cell-carcinoma
#19
Yuri Noda, Mitsunobu Kishino, Sunao Sato, Katsutoshi Hirose, Manabu Sakai, Yasuo Fukuda, Shumei Murakami, Satoru Toyosawa
AIMS: Galectin-1 (Gal-1) is a β-galactoside-binding protein that overexpresses in cancer and plays pivotal roles in tumour progression. Gal-1 regulates angiogenesis and invasiveness, and suppresses tumour immunity by inducing T cell apoptosis. Several studies have examined the relationship between Gal-1 and tumour immunosuppression in vivo, but they have not examined the clinicopathological relationship between Gal-1 expression and apoptotic T cell number in human tissue. In this study, we investigated the association between Gal-1 expression and apoptotic T cells of gingival squamous cell carcinoma (GSCC), as well as other clinicopathological factors...
February 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28104787/binding-characteristics-of-galectin-3-fusion-proteins
#20
Sophia Böcker, Lothar Elling
Galectin-3 modulates cell adhesion and signaling events by specific binding and cross-linking galactoside containing carbohydrate ligands. Proteolytic cleavage by metalloproteinases yields in vivo N-terminally truncated galectin-3 still bearing the carbohydrate recognition domain. Truncated galectin-3 has been demonstrated to act in vivo as a negative inhibitor of galectin-3 due to higher affinity for carbohydrate ligands. We here present our studies on a series of twelve human galectin-3 protein constructs...
January 19, 2017: Glycobiology
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