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https://www.readbyqxmd.com/read/28820886/circulating-mirnas-in-sepsis-a-network-under-attack-an-in-silico-prediction-of-the-potential-existence-of-mirna-sponges-in-sepsis
#1
Catalin Vasilescu, Mihnea Dragomir, Mihai Tanase, Dana Giza, Raluca Purnichescu-Purtan, Meng Chen, Sai-Ching Jim Yeung, George A Calin
Biomarkers based on the molecular mechanism of sepsis are important for timely diagnosis and treatment. A large panel of small non-coding microRNAs was reported to modulate the immune response in sepsis but have not been tested in clinical practice. Large-scale identification of microRNA networks in sepsis might reveal a new biological mechanism that can be also targeted by gene therapy. Therefore, the main objective of this study is to perform a comparison of the miRNA network between septic patients and healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28820441/genome-wide-interaction-study-of-omega-3-pufas-and-other-fatty-acids-on-inflammatory-biomarkers-of-cardiovascular-health-in-the-framingham-heart-study
#2
Jenna Veenstra, Anya Kalsbeek, Jason Westra, Craig Disselkoen, Caren Smith, Nathan Tintle
Numerous genetic loci have been identified as being associated with circulating fatty acid (FA) levels and/or inflammatory biomarkers of cardiovascular health (e.g., C-reactive protein). Recently, using red blood cell (RBC) FA data from the Framingham Offspring Study, we conducted a genome-wide association study of over 2.5 million single nucleotide polymorphisms (SNPs) and 22 RBC FAs (and associated ratios), including the four Omega-3 FAs (ALA, DHA, DPA, and EPA). Our analyses identified numerous causal loci...
August 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28820329/sources-to-variability-in-circulating-human-mirna-signatures
#3
Andreas Keller, Trine Rounge, Christina Backes, Nicole Ludwig, Randi Gislefoss, Petra Leidinger, Hilde Langseth, Eckart Meese
An increasing number of studies propose circulating microRNAs (miRNAs) as biomarkers for a large number of human diseases including cancer, cardiovascular diseases, neurological pathologies and others. To further validate miRNA as biomarkers it is indispensable to understand the variability of circulating miRNAs in healthy individuals. We determined the longitudinal miRNomes of 90 serum samples from the Janus Serum Bank in Norway, which have been stored between 23 and 40 years at -25 degrees Celsius. We profiled three serum samples with microarrays for 30 individuals, each...
August 18, 2017: RNA Biology
https://www.readbyqxmd.com/read/28819859/utilizing-matrigel-transwell-invasion-assay-to-detect-and-enumerate-circulating-tumor-cells
#4
Xingtong Liu, Xiangwei Wu
Metastasis is the cause of 90% of human cancer deaths. Circulating tumor cells (CTCs) in the peripheral blood and/or lymphatic vessels are cells shed from primary tumors and considered to be precursors of metastasis. Study of CTCs allows the serial monitoring of tumor progression and may provide predictive and prognostic biomarkers in clinic. Current CTC isolation and detection technologies encounter several challenges, including: heterogeneity of CTCs, low cell viability and/or high rate of contamination post-isolation, and the inability to distinguish viable/invasive from nonviable/nonfunctional CTCs, all of which can limit in vitro and in vivo characterization of CTCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819855/multispectral-imaging-analysis-of-circulating-tumor-cells-in-negatively-enriched-peripheral-blood-samples
#5
Brandon Miller, Maryam Lustberg, Thomas A Summers, Jeffrey J Chalmers
A variety of biomarkers are present on cells in peripheral blood of patients with a variety of disorders, including solid tumor malignancies. While rare, characterization of these cells for specific protein levels with the advanced technology proposed, will lead to future validation studies of blood samples as "liquid biopsies" for the evaluation of disease status and therapeutic response. While circulating tumor cells (CTCs) have been isolated in the blood samples of patients with solid tumors, the exact role of CTCs as clinically useful predictive markers is still debated...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819846/filter-adapted-fluorescent-in-situ-hybridization-fa-fish-for-filtration-enriched-circulating-tumor-cells
#6
Marianne Oulhen, Emma Pailler, Vincent Faugeroux, Françoise Farace
Circulating tumor cells (CTCs) may represent an easily accessible source of tumor material to assess genetic aberrations such as gene-rearrangements or gene-amplifications and screen cancer patients eligible for targeted therapies. As the number of CTCs is a critical parameter to identify such biomarkers, we developed fluorescent in situ hybridization (FISH) for CTCs enriched on filters (filter-adapted-FISH, FA-FISH). Here, we describe the FA-FISH protocol, the combination of immunofluorescent staining (DAPI/CD45) and FA-FISH techniques, as well as the semi-automated microscopy method that we developed to improve the feasibility and reliability of FISH analyses in filtration-enriched CTC...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819845/automated-microfluidic-filtration-and-immunocytochemistry-detection-system-for-capture-and-enumeration-of-circulating-tumor-cells-and-other-rare-cell-populations-in-blood
#7
Michael Pugia, Mark Jesus M Magbanua, John W Park
Isolation by size using a filter membrane offers an antigen-independent method for capturing rare cells present in blood of cancer patients. Multiple cell types, including circulating tumor cells (CTCs), captured on the filter membrane can be simultaneously identified via immunocytochemistry (ICC) analysis of specific cellular biomarkers. Here, we describe an automated microfluidic filtration method combined with a liquid handling system for sequential ICC assays to detect and enumerate non-hematologic rare cells in blood...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819837/microfluidic-capture-and-multiplex-immunofluorescence-of-circulating-tumor-cells-to-identify-cancer-of-origin
#8
Chian-Hui Lai, Ying-Chih Chang
Circulating tumor cells (CTCs) are an important biomarker and their analysis can be considered a form of "liquid biopsy." The purpose of this book chapter is to describe the use of the 4-channel CMx (cells captured in maximum) microfluidic chip, containing special micropatterns coated with an antibody-conjugated supported lipid bilayer (SLB) on its surface, to capture and isolate CTCs from the blood of cancer patients. Captured CTCs are subsequently released by an air foam to an immunofluorescence (IF) staining panel that enables further analysis, including the identification of the primary cancer source of the CTCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28819545/circulating-mirnas-in-pediatric-pulmonary-hypertension-show-promise-as-biomarkers-of-vascular-function
#9
Vitaly O Kheyfets, Carmen C Sucharov, Uyen Truong, Jamie Dunning, Kendall Hunter, Dunbar Ivy, Shelley Miyamoto, Robin Shandas
BACKGROUND/OBJECTIVES: The objective of this study was to evaluate the utility of circulating miRNAs as biomarkers of vascular function in pediatric pulmonary hypertension. METHOD: Fourteen pediatric pulmonary arterial hypertension patients underwent simultaneous right heart catheterization (RHC) and blood biochemical analysis. Univariate and stepwise multivariate linear regression was used to identify and correlate measures of reactive and resistive afterload with circulating miRNA levels...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28819446/incremental-value-of-circulating-mir-122-5p-to-predict-outcome-after-out-of-hospital-cardiac-arrest
#10
Yvan Devaux, Antonio Salgado-Somoza, Josef Dankiewicz, Adeline Boileau, Pascal Stammet, Anna Schritz, Lu Zhang, Mélanie Vausort, Patrik Gilje, David Erlinge, Christian Hassager, Matthew P Wise, Michael Kuiper, Hans Friberg, Niklas Nielsen
Rationale. The value of microRNAs (miRNAs) as biomarkers has been addressed in various clinical contexts. Initial studies suggested that miRNAs, such as the brain-enriched miR-124-3p, might improve outcome prediction after out-of-hospital cardiac arrest. The aim of this study is to determine the prognostic value of miR-122-5p in a large cohort of comatose survivors of out-of-hospital cardiac arrest. Methods. We analyzed 590 patients from the Targeted Temperature Management trial (TTM-trial). Circulating levels of miR-122-5p were measured in serum samples obtained 48 hours after return of spontaneous circulation...
2017: Theranostics
https://www.readbyqxmd.com/read/28819021/phenotypic-heterogeneity-of-circulating-tumor-cells-informs-clinical-decisions-between-ar-signaling-inhibitors-and-taxanes-in-metastatic-prostate-cancer
#11
Howard I Scher, Ryon P Graf, Nicole Schreiber, Brigit McLaughlin, Adam Jendrisak, Yipeng Wang, Jerry Lee, Stephanie Greene, Rachel Krupa, David Lu, Pascal Bamford, Jessica Louw, Lyndsey Dugan, Hebert Alberto Vargas, Martin Fleisher, Mark Landers, Glenn Heller, Ryan V Dittamore
The heterogeneity of an individual patient's tumor has been linked to treatment resistance, but quantitative biomarkers to rapidly and reproducibly evaluate heterogeneity in a clinical setting are currently lacking. Using established tools available in a CAP-accredited and CLIA-certified clinical laboratory, we quantified digital pathology features on 9,225 individual circulating tumor cells (CTCs) from 179 unique metastatic castration-resistant prostate cancer (mCRPC) patients to define phenotypically distinct cell types...
August 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28818408/serial-assessment-of-natriuretic-peptides-in-patients-undergoing-interventional-closure-of-the-left-atrial-appendage
#12
Blerim Luani, Thomas Rauwolf, Thomas Groscheck, Ivan Tanev, Joerg Herold, Berend Isermann, Alexander Schmeisser, Rüdiger C Braun-Dullaeus
BACKGROUND: Closure of the left atrial appendage (LAA) to prevent cardioembolic events is an alternative therapy to oral anticoagulation in patients with non-valvular atrial fibrillation. The LAA is an important source of natriuretic peptides and its exclusion from the circulation may alter the blood level of these hormones, thereby influencing their diagnostic value and clinical effects. METHODS: We aimed to prospectively assess potential changes in mid-regional pro A-type natriuretic peptide (MR-proANP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) levels six weeks and six months after interventional LAA closure using the Watchman device...
August 1, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28817706/hiv-infection-antiretroviral-therapy-and-measures-of-endothelial-function-inflammation-metabolism-and-oxidative-stress
#13
Andrew Dysangco, Ziyue Liu, James H Stein, Michael P Dubé, Samir K Gupta
BACKGROUND: HIV-infected patients have an increased risk of cardiovascular disease (CVD). Impaired endothelial function is an early risk factor for CVD in the general population. It is presumed that HIV infection is associated with impaired endothelial function, but results have been inconsistent. OBJECTIVES: Our objectives were to determine the relationships between HIV infection, virologic suppression with antiretroviral therapy (ART), in vivo measures of conduit artery and microvascular endothelial function, and circulating biomarkers of pathways associated with CVD...
2017: PloS One
https://www.readbyqxmd.com/read/28814883/serum-exosomal-mir-125b-is-a-novel-prognostic-marker-for-hepatocellular-carcinoma
#14
Weifeng Liu, Jie Hu, Kaiqian Zhou, Feiyu Chen, Zheng Wang, Boyi Liao, Zhi Dai, Ya Cao, Jia Fan, Jian Zhou
Hepatocellular carcinoma (HCC) is the sixth most common cancer worldwide with high mortality. Circulating miRNA has been demonstrated as a novel noninvasive biomarker for many tumors. This study aimed to investigate the potential of circulating miR-125b as a prognostic marker of HCC. Exosomes were extracted from serum samples collected from two independent cohorts: cohort 1: HCC (n=30), chronic hepatitis B (CHB, n=30), liver cirrhosis (LC, n=30); cohort 2: HCC (n=128). We found that miR-125b levels were remarkably increased in exosomes compared to those in serum from patients with CHB, LC, and HCC (P<0...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28814331/circulating-levels-of-soluble-fas-scd95-are-associated-with-risk-for-development-of-a-nonresolving-acute-kidney-injury-subphenotype
#15
Pavan K Bhatraju, Cassianne Robinson-Cohen, Carmen Mikacenic, Susanna Harju-Baker, Victoria Dmyterko, Natalie S J Slivinski, W Conrad Liles, Jonathan Himmelfarb, Susan R Heckbert, Mark M Wurfel
BACKGROUND: Critically ill patients with acute kidney injury (AKI) can be divided into two subphenotypes, resolving or nonresolving, on the basis of the trajectory of serum creatinine. It is unknown if the biology underlying these two AKI recovery patterns is different. METHODS: We measured eight circulating biomarkers in plasma obtained from a cohort of patients admitted to an intensive care unit (ICU) (n = 1241) with systemic inflammatory response syndrome...
August 17, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28813161/circulating-mtdna-as-a-mechanism-based-prognostic-biomarker-for-idiopathic-pulmonary-fibrosis
#16
Suzanne M Cloonan
No abstract text is available yet for this article.
August 16, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28812922/a-circulating-micro-rna-signature-serves-as-a-diagnostic-and-prognostic-indicator-in-sarcoidosis
#17
Christian Ascoli, Yue Huang, Cody Schott, Benjamin A Turturice, Ahmed Metwally, David L Perkins, Patricia W Finn
Micro-RNAs (miRNAs) act as post-transcriptional regulators of gene expression. In sarcoidosis, aberrant miRNA expression may enhance immune responses mounted against an unknown antigenic agent. We tested whether a distinct miRNA signature functions as a diagnostic biomarker and explored its role as an immune modulator in sarcoidosis. Expression of miRNAs from peripheral blood mononuclear cells from subjects that met clinical and histopathologic criteria for sarcoidosis were compared to those from matched controls in the ACCESS study...
August 16, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28811973/nk-cell-dysfunction-in-chronic-lymphocytic-leukemia-is-associated-with-loss-of-the-mature-cells-expressing-inhibitory-killer-cell-ig-like-receptors
#18
Alexander W MacFarlane, Mowafaq Jillab, Mitchell R Smith, R Katherine Alpaugh, Marion E Cole, Samuel Litwin, Michael M Millenson, Tahseen Al-Saleem, Adam D Cohen, Kerry S Campbell
A prospective analysis of natural killer (NK) cell phenotype and function was performed on fresh peripheral blood samples from untreated patients with B-cell chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL). Compared to healthy controls, CD56(dim) NK cells in CLL patients displayed reduced expression of the NKG2D activating receptor and increased CD27 expression, which indicates declines in mature cells. In addition, NK cells from CLL patients showed reduced degranulation responses toward transformed B cells alone or with rituximab and were more sensitive to activation-induced cell death...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811385/circulating-mir-200c-is-up-regulated-in-paediatric-patients-with-familial-hypercholesterolaemia-and-correlates-with-mir-33a-b-levels-implication-of-a-zeb1-dependent-mechanism
#19
Marco D'Agostino, Francesco Martino, Sara Sileno, Francesco Barilla, Sara Beji, Lorenza Marchetti, Fabio Maria Gangi, Luca Persico, Mario Picozza, Anna Montali, Eliana Martino, Cristina Zanoni, Daniele Avitabile, Sandro Parrotto, Maurizio C Capogrossi, Alessandra Magenta
Hypercholesterolaemia provokes reactive oxygen species (ROS) increase and is a major risk factor for cardiovascular diseases (CVD) development. We previously showed that circulating microRNA(miR)-33a/b expression levels were up-regulated in children with familial hypercholesterolaemia (FH). miR-33a/b control cholesterol homoeostasis and recently miR-33b has been demonstrated to directly target the transcription factor ZEB1. The latter acts in a negative feedback-loop with miR-200 family. Our previous studies showed that the ROS-dependent miR-200c up-regulation induces endothelial dysfunction and provokes a ZEB1-dependent apoptosis and senescence...
August 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28810735/accurate-electrochemistry-analysis-of-circulating-methylated-dna-from-clinical-plasma-based-on-paired-end-tagging-and-amplifications
#20
Feng Chen, Xuyao Wang, Xiaowen Cao, Yongxi Zhao
Circulating methylated DNA has been a new kind of cancer biomarker, yet its small fraction of trace total DNA from clinical samples impairs the accurate analysis. Though fluorescence methods based on quantitative methylation specific PCR (qMSP) have been adopted routinely, yet alternative electrochemistry assay of such DNA from clinical samples remains a great challenge. Herein, we report accurate electrochemistry analysis of circulating methylated DNA from clinical plasma samples based on a paired-end tagging and amplifications strategy...
August 16, 2017: Analytical Chemistry
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