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Clinical Chemistry

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https://www.readbyqxmd.com/read/28522444/harmonization-of-serum-thyroid-stimulating-hormone-measurements-paves-the-way-for-the-adoption-of-a-more-uniform-reference-interval
#1
Linda M Thienpont, Katleen Van Uytfanghe, Linde A C De Grande, Dries Reynders, Barnali Das, James D Faix, Finlay MacKenzie, Brigitte Decallonne, Akira Hishinuma, Bruno Lapauw, Paul Taelman, Paul Van Crombrugge, Annick Van den Bruel, Brigitte Velkeniers, Paul Williams
BACKGROUND: The IFCC Committee for Standardization of Thyroid Function Tests developed a global harmonization approach for thyroid-stimulating hormone measurements. It is based on a multiassay method comparison study with clinical serum samples and target setting with a robust factor analysis method. Here we describe the Phase IV method comparison and reference interval (RI) studies conducted with the objective to recalibrate the participating assays and demonstrate the proof-of-concept...
May 18, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28522443/harmonization-its-time-has-come
#2
EDITORIAL
W Greg Miller
No abstract text is available yet for this article.
May 18, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515106/direct-comparison-of-2-rule-out-strategies-for-acute-myocardial-infarction-2-h-accelerated-diagnostic-protocol-vs-2-h-algorithm
#3
Karin Wildi, Louise Cullen, Raphael Twerenbold, Jaimi H Greenslade, William Parsonage, Jasper Boeddinghaus, Thomas Nestelberger, Zaid Sabti, Maria Rubini-Giménez, Christian Puelacher, Janosch Cupa, Lukas Schumacher, Patrick Badertscher, Karin Grimm, Nikola Kozhuharov, Claudia Stelzig, Michael Freese, Katharina Rentsch, Jens Lohrmann, Wanda Kloos, Andreas Buser, Tobias Reichlin, John Pickering, Martin Than, Christian Mueller
BACKGROUND: We compared 2 high-sensitivity cardiac troponin (hs-cTn)-based 2-h strategies in patients presenting with suspected acute myocardial infarction (AMI) to the emergency department (ED): the 2-h accelerated diagnostic protocol (2h-ADP) combining hs-cTn, electrocardiogram, and a risk score, and the 2-h algorithm exclusively based on hs-cTn concentrations and their absolute changes. METHODS: Analyses were performed in 2 independent diagnostic cohorts [European Advantageous Predictors of Acute Coronary Syndrome Evaluation (APACE) study, Australian-New Zealand 2-h Accelerated Diagnostic Protocol to Assess patients with chest Pain symptoms using contemporary Troponins as the only biomarker (ADAPT) study] employing hs-cTnT (Elecsys) and hs-cTnI (Architect)...
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515105/free-circulating-methylated-dna-in-blood-for-diagnosis-staging-prognosis-and-monitoring-of-head-and-neck-squamous-cell-carcinoma-patients-an-observational-prospective-cohort-study
#4
Andreas Schröck, Annette Leisse, Luka de Vos, Heidrun Gevensleben, Freya Dröge, Alina Franzen, Malin Wachendörfer, Friederike Schröck, Joerg Ellinger, Marcus Teschke, Timo Wilhelm-Buchstab, Jennifer Landsberg, Stefan Holdenrieder, Gunther Hartmann, John K Field, Friedrich Bootz, Glen Kristiansen, Dimo Dietrich
BACKGROUND: Circulating cell-free DNA methylation testing in blood has recently received regulatory approval for screening of colorectal cancer. Its application in other clinical settings, including staging, prognosis, prediction, and recurrence monitoring is highly promising, and of particular interest in head and neck squamous cell carcinomas (HNSCC) that represent a heterogeneous group of cancers with unsatisfactory treatment guidelines. METHODS: Short stature homeobox 2 (SHOX2) and septin 9 (SEPT9) DNA methylation in plasma from 649 prospectively enrolled patients (training study: 284 HNSCC/122 control patients; testing study: 141 HNSCC/102 control patients) was quantified before treatment and longitudinally during surveillance...
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515104/pseudohypocalcemia-in-cancer-patients-a-recommendation-for-the-postanalytical-correction-of-serum-calcium-in-patients-with-hypoalbuminemia
#5
LETTER
Brittany Carroll, Martin Fleisher, Melissa S Pessin, Shaun Richardson, Lakshmi V Ramanathan
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515103/serial-measurement-of-biomarkers-after-acute-coronary-syndrome-which-one-to-choose
#6
EDITORIAL
Kai M Eggers
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515102/american-liver-guidelines-and-cutoffs-for-normal-alt-a-potential-for-overdiagnosis
#7
Mauro Panteghini, Khosrow Adeli, Ferruccio Ceriotti, Sverre Sandberg, Andrea Rita Horvath
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515101/laboratory-formulary-a-model-for-high-value-evidence-based-medicine
#8
LETTER
Y Victoria Zhang, Bruce R Smoller, Paul C Levy
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515100/detection-of-chromosomal-translocation-in-hematologic-malignancies-by-a-novel-dna-based-looped-ligation-assay-lola
#9
Shuko Harada, Emily Sizzle, Ming-Tseh Lin, Christopher D Gocke
BACKGROUND: Disease-defining chromosomal translocations are seen in various neoplasms, especially in lymphomas and leukemias. Translocation detection at the DNA level is often complicated by chromosomal breakpoints that are distributed over very large regions. We have developed a ligation-based assay [the looped ligation assay (LOLA)] to detect translocations from diseases with multiple widely spaced breakpoint hot spots. METHODS: Oligonucleotide sets that probe breakpoints of IGH-BCL2 (immunoglobulin heavy-apoptosis regulator) in follicular lymphoma (FL), MYC-IGH (MYC proto-oncogene, bHLH transcription factor- immunoglobulin heavy) in Burkitt lymphoma (BL) and BCR-ABL1 (RhoGEF and GTPase activating protein-ABL proto-oncogene 1, non-receptor tyrosine kinase) in chronic myelogenous leukemia (CML) were designed...
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515099/temporal-biomarker-profiling-reveals-longitudinal-changes-in-risk-of-death-or-myocardial-infarction-in-non-st-segment-elevation-acute-coronary-syndrome
#10
Mark Chan, Megan L Neely, Matthew T Roe, Shaun G Goodman, David Erlinge, Jan H Cornel, Kenneth J Winters, Joseph A Jakubowski, Chunmei Zhou, Keith A A Fox, Paul W Armstrong, Harvey D White, Dorairaj Prabhakaran, E Magnus Ohman, Kurt Huber
BACKGROUND: There are conflicting data on whether changes in N-terminal pro-B-type natriuretic peptide (NT-proBNP) and high-sensitivity C-reactive protein (hs-CRP) concentrations between time points (delta NT-proBNP and hs-CRP) are associated with a change in prognosis. METHODS: We measured NT-proBNP and hs-CRP at 3 time points in 1665 patients with non-ST-segment elevation acute coronary syndrome (NSTEACS). Cox proportional hazards was applied to the delta between temporal measurements to determine the continuous association with cardiovascular events...
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515098/collagen-turnover-markers-in-relation-to-future-cardiovascular-and-noncardiovascular-disease-the-multi-ethnic-study-of-atherosclerosis
#11
Daniel A Duprez, Myron D Gross, Otto A Sanchez, Jorge R Kizer, Joachim H Ix, Joao Lima, Russell P Tracy, David R Jacobs
BACKGROUND: Sustained remodeling of extracellular matrix can compromise organs and tissues. Procollagen type III N-terminal propeptide (PIIINP) and collagen type I carboxy-terminal telopeptide (ICTP) reflect collagen synthesis and degradation. We studied their predictive value for future death and disease. METHODS: A total of 3068 men and women in the Multi-Ethnic Study of Atherosclerosis who were free of cardiovascular disease (CVD) and in generally good health had a baseline blood sample taken for ICTP and PIIINP...
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515097/the-phoenix-rises-the-rebirth-of-cancer-immunotherapy
#12
Ivan M Blasutig, Sofia Farkona, Elizabeth I Buchbinder, Jason J Luke, Padmanee Sharma, Mario Sznol
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28515096/leveraging-human-genetics-to-understand-the-relation-of-ldl-cholesterol-with-type-2-diabetes
#13
Erik Ingelsson, Joshua W Knowles
No abstract text is available yet for this article.
May 17, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28483788/matchmaking-in-proteomics
#14
John R Yates
No abstract text is available yet for this article.
May 8, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28450385/mass-spectrometry-but-not-fluorometry-distinguishes-affected-and-pseudodeficiency-patients-in-newborn-screening-for-pompe-disease
#15
Hsuan-Chieh Liao, Min-Ju Chan, Chia-Feng Yang, Chuan-Chi Chiang, Dau-Ming Niu, Chun-Kai Huang, Michael H Gelb
BACKGROUND: Deficiency of the lysosomal enzyme acid α-glucosidase (GAA) causes Pompe disease. Newborn screening for Pompe disease is ongoing, and improved methods for distinguishing affected patients from those with pseudodeficiency, especially in the Asian population, would substantially reduce the number of patient referrals for clinical follow-up. METHODS: We measured the enzymatic activity of GAA in dried blood spots on newborn screening cards (DBS) using a tandem mass spectrometry (MS/MS) assay...
April 27, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28432186/wellness-initiatives-benefits-and-limitations
#16
Michelle Li, Eleftherios P Diamandis, Nigel Paneth, Kiang-Teck J Yeo, Henrik Vogt, Stephen R Master
No abstract text is available yet for this article.
April 21, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28428361/single-tube-dodecaplex-pcr-panel-of-polymorphic-microsatellite-markers-closely-linked-to-the-dmpk-ctg-repeat-for-preimplantation-genetic-diagnosis-of-myotonic-dystrophy-type-1
#17
Mulias Lian, Mingjue Zhao, Caroline G Lee, Samuel S Chong
BACKGROUND: Preimplantation genetic diagnosis (PGD) of myotonic dystrophy type 1 (DM1) currently uses conventional PCR to detect nonexpanded dystrophia myotonica protein kinase (DMPK) alleles or triplet-primed PCR to detect the CTG-expanded alleles, coupled with analysis of linked microsatellite markers to increase diagnostic accuracy. We aimed to simplify the process of identification and selection of informative linked markers for application to DM1 PGD. METHODS: An in silico search was performed to identify all markers within 1-1...
April 20, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28428360/cardiac-troponins-molecules-of-many-surprises
#18
EDITORIAL
Geza S Bodor
No abstract text is available yet for this article.
April 20, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28428359/in-reply
#19
LETTER
Fred S Apple, Yader Sandoval, Allan S Jaffe
No abstract text is available yet for this article.
April 20, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28428358/effect-of-repeat-measurements-of-high-sensitivity-cardiac-troponin-on-the-same-sample-using-the-european-society-of-cardiology-0-hour-1-hour-or-2-hour-algorithms-for-early-rule-out-and-rule-in-for-myocardial-infarction
#20
LETTER
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