keyword
MENU ▼
Read by QxMD icon Read
search

Biomarker

keyword
https://www.readbyqxmd.com/read/27906513/smartphone-based-portable-wireless-optical-system-for-the-detection-of-target-analytes
#1
Shreedhar Gautam, Bhagwan S Batule, Hyo Yong Kim, Ki Soo Park, Hyun Gyu Park
Rapid and accurate on-site wireless measurement of hazardous molecules or biomarkers is one of the biggest challenges in nanobiotechnology. We herein describe a novel smartphone-based Portable and Wireless Optical System (PAWS) for rapid, quantitative, and on-site analysis of target analytes. As a proof-of-concept, we employed gold nanoparticles (GNP) and an enzyme, horse radish peroxidase (HRP), to generate colorimetric signals in response to two model target molecules, melamine and hydrogen peroxide, respectively...
December 1, 2016: Biotechnology Journal
https://www.readbyqxmd.com/read/27906487/neutrophil-activation-during-acute-human-anaphylaxis-analysis-of-mpo-and-scd62l
#2
Abbie Francis, Erika Bosio, Shelley F Stone, Daniel M Fatovich, Glenn Arendts, Yusuf Nagree, Stephen P J Macdonald, Hugh Mitenko, Mani Rajee, Sally Burrows, Simon G A Brown
BACKGROUND: The mechanisms involved in the amplification of the mast cell response during anaphylaxis are unclear. Mouse models of anaphylaxis demonstrate the critical involvement of neutrophils. These innate immune cells are highly abundant in peripheral blood and can be rapidly activated to trigger both local and systemic inflammation. OBJECTIVE: To investigate neutrophil activation in peripheral blood during acute human anaphylaxis. METHODS: Patients presenting to the Emergency Department with anaphylaxis underwent blood sampling upon enrolment and at up to three subsequent time points...
December 1, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27906454/immunotherapy-of-head-and-neck-cancer-emerging-clinical-trials-from-a-national-cancer-institute-head-and-neck-cancer-steering-committee-planning-meeting
#3
Julie E Bauman, Ezra Cohen, Robert L Ferris, David J Adelstein, David M Brizel, John A Ridge, Brian O'Sullivan, Barbara A Burtness, Lisa H Butterfield, William E Carson, Mary L Disis, Bernard A Fox, Thomas F Gajewski, Maura L Gillison, James W Hodge, Quynh-Thu Le, David Raben, Scott E Strome, Jean Lynn, Shakun Malik
Recent advances have permitted successful therapeutic targeting of the immune system in head and neck squamous cell carcinoma (HNSCC). These new immunotherapeutic targets and agents are being rapidly adopted by the oncologic community and hold considerable promise. The National Cancer Institute sponsored a Clinical Trials Planning Meeting to address the issue of how to further investigate the use of immunotherapy in patients with HNSCC. The goals of the meeting were to consider phase 2 or 3 trial designs primarily in 3 different patient populations: those with previously untreated, human papillomavirus-initiated oropharyngeal cancers; those with previously untreated, human papillomavirus-negative HNSCC; and those with recurrent/metastatic HNSCC...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27906424/s100b-in-serum-and-saliva-a-valid-invasive-or-non-invasive-biomarker-in-obstructive-sleep-apnea
#4
M Traxdorf, O Wendler, K Tziridis, J Bauer, C Scherl
OBJECTIVE:   The aim of this prospective study was to determine whether serum or saliva S100B could be established as an invasive or non-invasive biomarker of cerebrovascular stress due to chronic intermittent hypoxia in obstructive sleep apnea (OSA). PATIENTS AND METHODS: S100B levels in serum and saliva were measured by an enzyme-linked immunosorbent assay (ELISA) in 40 patients with polysomnographically confirmed OSA (n=34) or ronchopathy (n=6) and 20 control subjects (n=20)...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27906173/sensitivity-of-gbm-cells-to-camp-agonist-mediated-apoptosis-correlates-with-cd44-expression-and-agonist-resistance-with-mapk-signaling
#5
Paul M Daniel, Gulay Filiz, Theo Mantamadiotis
In some cell types, activation of the second messenger cAMP leads to increased expression of proapoptotic Bim and subsequent cell death. We demonstrate that suppression of the cAMP pathway is a common event across many cancers and that pharmacological activation of cAMP in glioblastoma (GBM) cells leads to enhanced BIM expression and apoptosis in specific GBM cell types. We identified the MAPK signaling axis as the determinant of cAMP agonist sensitivity in GBM cells, with high MAPK activity corresponding to cAMP resistance and low activity corresponding to sensitization to cAMP-induced apoptosis...
December 1, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27906035/extracellular-vesicles-in-the-pathogenesis-of-rheumatoid-arthritis-and-osteoarthritis
#6
REVIEW
Joseph Withrow, Cameron Murphy, Yutao Liu, Monte Hunter, Sadanand Fulzele, Mark W Hamrick
Osteoarthritis (OA) and rheumatoid arthritis (RA) are both debilitating diseases that cause significant morbidity in the US population. Extracellular vesicles (EVs), including exosomes and microvesicles, are now recognized to play important roles in cell-to-cell communication by transporting various proteins, microRNAs (miRNAs), and mRNAs. EV-derived proteins and miRNAs impact cell viability and cell differentiation, and are likely to play a prominent role in the pathophysiology of both OA and RA. Some of the processes by which these membrane-bound vesicles can alter joint tissue include extracellular matrix degradation, cell-to-cell communication, modulation of inflammation, angiogenesis, and antigen presentation...
December 1, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27905921/systematic-review-of-the-role-of-angiopoietin-1-and-angiopoietin-2-in-plasmodium-species-infections-biomarkers-or-therapeutic-targets
#7
Gerdie M de Jong, Jasper J Slager, Annelies Verbon, Jaap J van Hellemond, Perry J J van Genderen
BACKGROUND: Levels of both angiopoietin-1 (Ang-1) and angiopoietin-2 (Ang-2) correlate with malaria disease severity and are proposed as biomarkers and possible therapeutic targets. To establish their role in malaria, a systematic review was performed of the literature on Ang-1 and Ang-2 with regard to their potential as biomarkers in malaria and discuss their possible place in adjuvant treatment regimens. METHODS: Ten electronic databases were systematically searched to identify studies investigating Ang-1 and Ang-2 in human and murine malaria in both clinical and experimental settings...
December 1, 2016: Malaria Journal
https://www.readbyqxmd.com/read/27905852/sweat-chloride-the-critical-biomarker-for-cystic-fibrosis-trials
#8
Marci K Sontag
No abstract text is available yet for this article.
December 1, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27905825/saliva-volatile-biomarkers-and-profiles
#9
Maciej Milanowski, Paweł Pomastowski, Tomasz Ligor, Bogusław Buszewski
Saliva is an aqueous fluid found in the oral cavity playing fundamental role in the preservation and maintenance of oral health. Apart from higher-molecular-weight constituents it contains volatile organic compounds (VOCs) that may origin from such sources as blood or be result of bacterial metabolism. They can also reach the oral fluid through dissolving of volatiles from breath and consumed foods. Some of them may serve as biomarkers of various diseases, such as dimethyl disulfide (halitosis), pyridine (periodontal disease) and trimethylamine (trimethylaminuria) or occupational exposure...
December 1, 2016: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/27905532/validation-of-plasma-micrornas-as-biomarkers-for-myotonic-dystrophy-type-1
#10
A Perfetti, S Greco, R Cardani, B Fossati, G Cuomo, R Valaperta, F Ambrogi, A Cortese, A Botta, A Mignarri, M Santoro, C Gaetano, E Costa, M T Dotti, G Silvestri, R Massa, G Meola, F Martelli
Non-invasive and simple to measure biomarkers are still an unmet need for myotonic dystrophy type 1 (DM1). Indeed, muscle biopsies can be extremely informative, but their invasive nature limits their application. Extracellular microRNAs are emerging humoral biomarkers and preliminary studies identified a group of miRNAs that are deregulated in the plasma or serum of small groups of DM1 patients. Here we adopted very stringent selection and normalization criteria to validate or disprove these miRNAs in 103 DM1 patients and 111 matched controls...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905519/the-impact-of-dna-damage-response-gene-polymorphisms-on-therapeutic-outcomes-in-late-stage-ovarian-cancer
#11
F Guffanti, R Fruscio, E Rulli, G Damia
Late stage epithelial ovarian cancer has a dismal prognosis. Identification of pharmacogenomic markers (i.e. polymorphisms) to stratify patients to optimize individual therapy is of paramount importance. We here report the retrospective analysis of polymorphisms in 5 genes (ATM, ATR, Chk1, Chk2 and CDK12) involved in the cellular response to platinum in a cohort of 240 cancer patients with late stage ovarian cancer. The aim of the present study was to evaluate associations between the above mentioned SNPs and patients' clinical outcomes: overall survival (OS) and progression free survival (PFS)...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905491/changes-in-urinary-metabolomic-profile-during-relapsing-renal-vasculitis
#12
Bahjat Al-Ani, Martin Fitzpatrick, Hamad Al-Nuaimi, Alice M Coughlan, Fionnuala B Hickey, Charles D Pusey, Caroline Savage, Christopher M Benton, Eóin C O'Brien, Declan O'Toole, Ken H Mok, Stephen P Young, Mark A Little
Current biomarkers of renal disease in systemic vasculitis lack predictive value and are insensitive to early damage. To identify novel biomarkers of renal vasculitis flare, we analysed the longitudinal urinary metabolomic profile of a rat model of anti-neutrophil cytoplasmic antibody (ANCA) vasculitis. Wistar-Kyoto (WKY) rats were immunised with human myeloperoxidase (MPO). Urine was obtained at regular intervals for 181 days, after which relapse was induced by re-challenge with MPO. Urinary metabolites were assessed in an unbiased fashion using nuclear magnetic resonance (NMR) spectroscopy, and analysed using partial least squares discriminant analysis (PLS-DA) and partial least squares regression (PLS-R)...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905400/lncbrm-initiates-yap1-signalling-activation-to-drive-self-renewal-of-liver-cancer-stem-cells
#13
Pingping Zhu, Yanying Wang, Jiayi Wu, Guanling Huang, Benyu Liu, Buqing Ye, Ying Du, Guangxia Gao, Yong Tian, Lei He, Zusen Fan
Liver cancer stem cells (CSCs) may contribute to the high rate of recurrence and heterogeneity of hepatocellular carcinoma (HCC). However, the biology of hepatic CSCs remains largely undefined. Through analysis of transcriptome microarray data, we identify a long noncoding RNA (lncRNA) called lncBRM, which is highly expressed in liver CSCs and HCC tumours. LncBRM is required for the self-renewal maintenance of liver CSCs and tumour initiation. In liver CSCs, lncBRM associates with BRM to initiate the BRG1/BRM switch and the BRG1-embedded BAF complex triggers activation of YAP1 signalling...
December 1, 2016: Nature Communications
https://www.readbyqxmd.com/read/27905399/cellular-reactions-to-long-term-volatile-organic-compound-voc-exposures
#14
Johanna M Gostner, Johannes Zeisler, Mohammad Tauqeer Alam, Peter Gruber, Dietmar Fuchs, Kathrin Becker, Kerstin Neubert, Markus Kleinhappl, Stefan Martini, Florian Überall
Investigations of cellular processes initiated by volatile organic compounds (VOCs) are limited when modelling realistic long-term exposure scenarios at low concentrations. Exposure to indoor VOCs is associated with a range of adverse effects, but data on molecular changes at regulatory threshold limits are lacking. Activity analysis of VOC in vitro can be a valuable complement to inhalation toxicological evaluations. We developed an exposure platform that generates a stable VOC atmosphere and allows the exposure of cells for longer periods...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905388/-prognostic-biochemical-markers-of-thrombolytic-therapy-in-ischemic-stroke
#15
O A Kicherova, L I Reikhert, V G Skorikova, S A Semeshko
AIM: To assess prognostic value of endothelial dysfunction, endogenous intoxication and oxidative stress in the acute period of ischemic stroke (II) at the stage of making a decision on using thrombolytic therapy (TLT) as well during the follow-up in order to personalize treatment. MATERIAL AND METHODS: The study included 57 patients stratified into control group 1 (n=29) and TLT group (n=28). Contents of C-reactive protein (Nsrb), matrixmetalloproteinase-9 (MMP-9) erythrocyte lipid peroxidation products were measured in the blood of patients...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27905294/glucocorticoids-increase-skeletal-muscle-nf-%C3%AE%C2%BAb-inducing-kinase-nik-links-to-muscle-atrophy
#16
Christopher S Fry, Syed Z Nayeem, Edgar L Dillon, Partha S Sarkar, Batbayar Tumurbaatar, Randall J Urban, Traver J Wright, Melinda Sheffield-Moore, Ronald G Tilton, Sanjeev Choudhary
Glucocorticoids (GC) are a frontline therapy for numerous acute and chronic diseases because of their demonstrated efficacy at reducing systemic inflammation. An unintended side effect of GC therapy is the stimulation of skeletal muscle atrophy. Pathophysiological mechanisms responsible for GC-induced skeletal muscle atrophy have been extensively investigated, and the ability to treat patients with GC without unintended muscle atrophy has yet to be realized. We have reported that a single, standard-of-care dose of Methylprednisolone increases in vivo expression of NF-κB-inducing kinase (NIK), an important upstream regulatory kinase controlling NF-κB activation, along with other key muscle catabolic regulators such as Atrogin-1 and MuRF1 that induce skeletal muscle proteolysis...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27905213/hepatic-lipid-and-genetic-factors-associated-with-obesity-crosstalk-with-alcohol-dependence
#17
Kimberly Goodyear, Mary R Lee, Melanie L Schwandt, Colin A Hodgkinson, Lorenzo Leggio
OBJECTIVES: Alcohol dependence represents a leading cause of mortality and morbidity. Understanding the variables that contribute to this diagnosis and its severity is critical. An overlap between factors that may predispose people to become obese and those that may increase the risk of alcohol dependence may exist. However, data in the literature are not conclusive. Therefore, this study aimed to identify the association between alcohol dependence and obesity-related factors, including biochemical and genetic factors...
December 1, 2016: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/27905123/selective-precipitation-reaction-a-novel-diagnostic-test-for-tissue-pathology-in-atlantic-salmon-salmo-salar-infected-with-salmonid-alphavirus-sav3
#18
M Braceland, J Tinsley, D Cockerill, R Bickerdike, M F McLoughlin, P D Eckersall
While investigating biomarkers for infection with salmonid alphavirus (SAV), the cause of pancreas disease (PD), a selective precipitation reaction (SPR) has been discovered in serum which could be an on-farm qualitative test and an in-laboratory quantitative assay for health assessments in aquaculture. Mixing serum from Atlantic salmon, Salmo salar, with SAV infection with a sodium acetate buffer caused a visible precipitation which does not occur with serum from healthy salmon. Proteomic examination of the precipitate has revealed that the components are a mix of muscle proteins, for example enolase and aldolase, along with serum protein such as serotransferrin and complement C9...
November 30, 2016: Journal of Fish Diseases
https://www.readbyqxmd.com/read/27905104/biomarkers-of-folate-and-vitamin-b12-and-breast-cancer-risk-report-from-the-epic-cohort
#19
M Matejcic, J de Batlle, C Ricci, C Biessy, F Perrier, I Huybrechts, E Weiderpass, Boutron-Mc Ruault, C Cadeau, M His, D G Cox, H Boeing, R T Fortner, R Kaaks, P Lagiou, A Trichopoulou, V Benetou, R Tumino, S Panico, S Sieri, D Palli, F Ricceri, H B Bueno-de-Mesquita, G Skeie, P Amiano, M J Sánchez, M D Chirlaque, A Barricarte, J R Quirós, G Buckland, C H van Gils, P H Peeters, T J Key, E Riboli, B Gylling, A Zeleniuch-Jacquotte, M J Gunter, I Romieu, V Chajès
Epidemiological studies have reported inconsistent findings for the association between B vitamins and breast cancer (BC) risk. We investigated the relationship between biomarkers of folate and vitamin B12 and the risk of BC in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Plasma concentrations of folate and vitamin B12 were determined in 2,491 BC cases individually matched to 2,521 controls among women who provided baseline blood samples. Multivariable logistic regression models were used to estimate odds ratios by quartiles of either plasma B vitamin...
December 1, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27905102/elevated-fetal-haemoglobin-is-a-predictor-of-better-outcome-in%C3%A2-mds-aml-patients-receiving-5-aza-2-deoxycytidine-decitabine
#20
Michael Lübbert, Gabriele Ihorst, Philipp N Sander, Ljudmila Bogatyreva, Heiko Becker, Pierre W Wijermans, Stefan Suciu, Emmanuel Bissé, Rainer Claus
Although azanucleoside DNA-hypomethylating agents (HMAs) are routinely used for the treatment of myelodysplastic syndrome/acute myeloid leukaemia (MDS/AML), very few outcome predictors have been established. Expression of the β-like globin gene locus is tightly regulated by DNA methylation, is HMA-sensitive in vitro, and fetal haemoglobin (HbF) expression is under study as a potential biomarker for response of MDS patients to azacitidine. We determined HbF expression in 16 MDS and 36 AML patients receiving decitabine (DAC)...
December 1, 2016: British Journal of Haematology
keyword
keyword
565
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"