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https://www.readbyqxmd.com/read/28324127/development-of-certified-reference-materials-for-electrolytes-in-human-serum-gbw09124-09126
#1
Liuxing Feng, Jun Wang, Yanjie Cui, Naijie Shi, Haifeng Li, Hongmei Li
Three reference materials, at relatively low, middle, and high concentrations, were developed for analysis of the mass fractions of electrolytes (K, Ca, Na, Mg, Cl, and Li) in human serum. The reference materials were prepared by adding high purity chloride salts to normal human serum. The concentration range of the three levels is within ±20% of normal human serum. It was shown that 14 units with duplicate analysis is enough to demonstrate the homogeneity of these candidate reference materials. The statistical results also showed no significant trends in both short-term stability test for 1 week at 40 °C and long-term stability test for 14 months...
March 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28323556/psychometric-properties-of-the-alcohol-use-disorders-identification-test-consumption-audit-c-in-public-first-responders
#2
Hyeonseok S Jeong, Shinwon Park, Soo Mee Lim, Jiyoung Ma, Ilhyang Kang, Jungyoon Kim, Eui-Jung Kim, Yejee J Choi, Jae-Ho Lim, Yong-An Chung, In Kyoon Lyoo, Sujung Yoon, Jieun E Kim
Problematic alcohol consumption is prevalent among first responders because alcohol is commonly used to cope with occupational stress and frequent exposure to traumatic incidents, making them an at-risk population for alcohol use disorders (AUD). This study investigated the psychometric properties of the Korean version of the Alcohol Use Disorders Identification Test-Consumption (AUDIT-C) among public first responders. The Structured Clinical Interview for the Diagnostic and Statistical Manual of Mental Disorders-IV-Text Revision (SCID), AUDIT-C, AUDIT, and CAGE were administered to 222 public first responders, who were recruited by convenience sampling...
March 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28320159/prevalence-of-peripheral-neuropathy-and-associated-factors-in-hiv-infected-patients
#3
Maria Luiza Areal Corrêa de Sá E Benevides, Sérgio Beduschi Filho, Rodrigo Debona, Eduardo Novaes Costa Bergamaschi, Jean Costa Nunes
The progress on HIV infection treatment has allowed a longer survival for HIV-infected patients. However, chronic comorbidities are emerging. Peripheral Neuropathy (PN) represents one of the most prevalent neurologic disorders among these patients, and comprehensive studies may contribute to a reduction in the morbidity of this condition. This is a cross-sectional analytic study conducted in a tertiary referral hospital in southern Brazil. This study investigates the prevalence of PN among HIV-infected patients and associated demographic, clinical and laboratory variables...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319902/ultra-high-sensitivity-of-the-non-immunological-affinity-of-graphene-oxide-peptide-based-surface-plasmon-resonance-biosensors-to-detect-human-chorionic-gonadotropin
#4
Nan-Fu Chiu, Chia-Tzu Kuo, Ting-Li Lin, Chia-Chen Chang, Chen-Yu Chen
Specific peptide aptamers can be used in place of expensive antibody proteins, and they are gaining increasing importance as sensing probes due to their potential in the development of non-immunological assays with high sensitivity, affinity and specificity for human chorionic gonadotropin (hCG) protein. We combined graphene oxide (GO) sheets with a specific peptide aptamer to create a novel, simple and label-free tool to detect abnormalities at an early stage of pregnancy, a GO-peptide-based surface plasmon resonance (SPR) biosensor...
March 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28317645/the-biomarker-based-diagnosis-of-alzheimer-s-disease-2-lessons-from-oncology
#5
REVIEW
Marina Boccardi, Valentina Gallo, Yutaka Yasui, Paolo Vineis, Alessandro Padovani, Urs Mosimann, Panteleimon Giannakopoulos, Gabriel Gold, Bruno Dubois, Clifford R Jack, Bengt Winblad, Giovanni B Frisoni, Emiliano Albanese
Biomarkers for the diagnosis of Alzheimer's disease (AD) are not yet validated for use in clinical settings. We aim to provide a methodological framework for their systematic validation, by reference to that developed for oncology biomarkers. As for this discipline, the steps for the systematic validation of AD biomarkers need to target analytical validity, clinical validity, and clinical utility. However, the premises are different from oncology: the nature of disease (neurodegeneration vs. cancer), the purpose (improve diagnosis in clinically affected vs...
April 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28314241/characterizing-articulation-in-apraxic-speech-using-real-time-magnetic-resonance-imaging
#6
Christina Hagedorn, Michael Proctor, Louis Goldstein, Stephen M Wilson, Bruce Miller, Maria Luisa Gorno-Tempini, Shrikanth S Narayanan
Purpose: Real-time magnetic resonance imaging (MRI) and accompanying analytical methods are shown to capture and quantify salient aspects of apraxic speech, substantiating and expanding upon evidence provided by clinical observation and acoustic and kinematic data. Analysis of apraxic speech errors within a dynamic systems framework is provided and the nature of pathomechanisms of apraxic speech discussed. Method: One adult male speaker with apraxia of speech was imaged using real-time MRI while producing spontaneous speech, repeated naming tasks, and self-paced repetition of word pairs designed to elicit speech errors...
March 17, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28314141/assay-validation-of-the-cardiac-isoform-of-troponin-i-in-double-crested-cormorant-phalacrocorax-auritus-plasma-for-diagnosis-of-cardiac-damage
#7
Melissa Daigneault, Kendal E Harr, Karen M Dean, Steven J Bursian
Cardiac abnormalities, initially found in Deepwater Horizon weathered MC252 crude oil exposed Double Crested Cormorants (DCCOs) upon gross necropsy, were further investigated using echocardiography. Clinical and statistically significant changes including decreased ventricular myocardial contractility and arrhythmia were elucidated by echocardiography and interpreted by boarded cardiologists as potentially life threatening. The objective of this investigation was to initiate development of an antemortem, sensitive blood screening test for cardiac damage due to oil exposure of avian species...
March 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28304219/surgical-or-transcatheter-aortic-valve-replacement-in-intermediate-risk-patients
#8
Michael J Reardon, Nicolas M Van Mieghem, Jeffrey J Popma, Neal S Kleiman, Lars Søndergaard, Mubashir Mumtaz, David H Adams, G Michael Deeb, Brijeshwar Maini, Hemal Gada, Stanley Chetcuti, Thomas Gleason, John Heiser, Rüdiger Lange, William Merhi, Jae K Oh, Peter S Olsen, Nicolo Piazza, Mathew Williams, Stephan Windecker, Steven J Yakubov, Eberhard Grube, Raj Makkar, Joon S Lee, John Conte, Eric Vang, Hang Nguyen, Yanping Chang, Andrew S Mugglin, Patrick W J C Serruys, Arie P Kappetein
Background Although transcatheter aortic-valve replacement (TAVR) is an accepted alternative to surgery in patients with severe aortic stenosis who are at high surgical risk, less is known about comparative outcomes among patients with aortic stenosis who are at intermediate surgical risk. Methods We evaluated the clinical outcomes in intermediate-risk patients with severe, symptomatic aortic stenosis in a randomized trial comparing TAVR (performed with the use of a self-expanding prosthesis) with surgical aortic-valve replacement...
March 17, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28304112/evaluation-of-various-approaches-to-the-isolation-of-steroid-hormones-from-urine-samples-prior-to-fass-mekc-analysis
#9
Ilona Olędzka, Piotr Kowalski, Alina Plenis, Tomasz Bączek
The goal of this study was to assess various analytical approaches for the simultaneous and efficient extraction of steroid hormones (cortisone, cortisol, prednisolone, corticosterone, testosterone, 17α-methyltestosterone, epitestosterone, progesterone) from urine samples prior to separation based on field-amplified sample stacking-micellar electrokinetic chromatography (FASS-MEKC). FASS-MEKC successfully allowed the compounds to be separated within 12 min using a background electrolyte (BGE) comprised of 5 mM sodium tetraborate, 150 mM boric acid, 50 mM SDS and 15% methanol...
March 17, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28303910/automated-protein-biomarker-analysis-on-line-extraction-of-clinical-samples-by-molecularly-imprinted-polymers
#10
Cecilia Rossetti, Magdalena A Świtnicka-Plak, Trine Grønhaug Halvorsen, Peter A G Cormack, Börje Sellergren, Léon Reubsaet
Robust biomarker quantification is essential for the accurate diagnosis of diseases and is of great value in cancer management. In this paper, an innovative diagnostic platform is presented which provides automated molecularly imprinted solid-phase extraction (MISPE) followed by liquid chromatography-mass spectrometry (LC-MS) for biomarker determination using ProGastrin Releasing Peptide (ProGRP), a highly sensitive biomarker for Small Cell Lung Cancer, as a model. Molecularly imprinted polymer microspheres were synthesized by precipitation polymerization and analytical optimization of the most promising material led to the development of an automated quantification method for ProGRP...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303438/using-health-technology-assessment-to-assess-the-value-of-new-medicines-results-of-a-systematic-review-and-expert-consultation-across-eight-european-countries
#11
Aris Angelis, Ansgar Lange, Panos Kanavos
BACKGROUND: Although health technology assessment (HTA) systems base their decision making process either on economic evaluations or comparative clinical benefit assessment, a central aim of recent approaches to value measurement, including value based assessment and pricing, points towards the incorporation of supplementary evidence and criteria that capture additional dimensions of value. OBJECTIVE: To study the practices, processes and policies of value-assessment for new medicines across eight European countries and the role of HTA beyond economic evaluation and clinical benefit assessment...
March 16, 2017: European Journal of Health Economics: HEPAC: Health Economics in Prevention and Care
https://www.readbyqxmd.com/read/28303226/simultaneous-determination-of-14-active-constituents-of-shengjiang-xiexin-decoction-using-ultrafast-liquid-chromatography-coupled-with-electrospray-ionization-tandem-mass-spectrometry
#12
Gang Peng, Huanyu Guan, Xiaoming Wang, Yue Shi
An effective herbal medicinal prescription of Shengjiang Xiexin decoction (SXD) was used in treating the inflammatory bowel disease in clinic. In this study, an ultrafast liquid chromatography-tandem mass spectrometry (UFLC-MS/MS) method was developed to separate and to simultaneously determine 14 major active ingredients in SXD. Chromatographic separation was successfully accomplished on an Acquity BEH C18 (100 mm×2.1 mm, 1.7 μm) column using gradient elution with 0.1% (v/v) formic acid water (A) and 0...
March 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28302542/clinical-implications-associated-with-the-posttranslational-modification-induced-functional-impairment-of-albumin-in-oxidative-stress-related-diseases
#13
REVIEW
Hiroshi Watanabe, Tadashi Imafuku, Masaki Otagiri, Toru Maruyama
Recent research findings indicate that the posttranslational modification of human serum albumin (HSA) such as oxidation, glycation, truncation, dimerization and carbamylation is related to certain types of diseases. We report herein on a simple and rapid analytical method, using an ESI-TOFMS technique, that allows posttranslational modifications of HSA to be quantitatively and qualitatively evaluated with a high degree of sensitivity. In patients with chronic liver disease, chronic renal disease and diabetes mellitus, an increase in the level of oxidized Cys-34 of HSA accompanied by a decrease in the level of reduced Cys-34 was observed...
March 13, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28302189/temporal-dynamics-of-rituals-in-obsessive-compulsive-disorder
#14
Robert W Bond, Stephen J Guastello, Andrea D Guastello
Obsessive-compulsive disorder (OCD) is characterized by obsessions, defined as intrusive and persistent thoughts, and compulsions, defined as repetitive ritualistic behaviors that attempt to neutralize the anxiety associated with the obsessions. The present study investigated the patterns of symptoms as they occur over time in order to generate new insights about the triggers to symptoms. Fourteen adult participants who met the DSM-5 criteria for OCD completed 7-day logbooks of daily activities including the times when they engaged in compulsive rituals...
April 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28302091/development-of-a-test-that-measures-real-time-her2-signaling-function-in-live-breast-cancer-cell-lines-and-primary-cells
#15
Yao Huang, David J Burns, Benjamin E Rich, Ian A MacNeil, Abhijit Dandapat, Sajjad M Soltani, Samantha Myhre, Brian F Sullivan, Carol A Lange, Leo T Furcht, Lance G Laing
BACKGROUND: Approximately 18-20% of all human breast cancers have overexpressed human epidermal growth factor receptor 2 (HER2). Standard clinical practice is to treat only overexpressed HER2 (HER2+) cancers with targeted anti-HER2 therapies. However, recent analyses of clinical trial data have found evidence that HER2-targeted therapies may benefit a sub-group of breast cancer patients with non-overexpressed HER2. This suggests that measurement of other biological factors associated with HER2 cancer, such as HER2 signaling pathway activity, should be considered as an alternative means of identifying patients eligible for HER2 therapies...
March 16, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28301753/identification-and-quantitation-of-circulating-tumor-cells
#16
Siddarth Rawal, Yu-Ping Yang, Richard Cote, Ashutosh Agarwal
Circulating tumor cells (CTCs) are shed from the primary tumor into the circulatory system and act as seeds that initiate cancer metastasis to distant sites. CTC enumeration has been shown to have a significant prognostic value as a surrogate marker in various cancers. The widespread clinical utility of CTC tests, however, is still limited due to the inherent rarity and heterogeneity of CTCs, which necessitate robust techniques for their efficient enrichment and detection. Significant recent advances have resulted in technologies with the ability to improve yield and purity of CTC enrichment as well as detection sensitivity...
March 6, 2017: Annual Review of Analytical Chemistry
https://www.readbyqxmd.com/read/28300999/quality-of-life-and-characteristics-of-diabetic-patients
#17
Karina Corrêa, Giovana Renata Gouvêa, Marco Antonio Viera da Silva, Rosana de Fátima Possobon, Luis Fernando de Lima Nunes Barbosa, Antonio Carlos Pereira, Luciane Guerra Miranda, Karine Laura Cortellazzi
This study aimed to assess the association between quality of life and clinical and sociodemographic variables in type 2 diabetes patients, after they had started treatment in Primary and Specialized Health Care. This is an analytical cross-sectional study with a sampling of diabetic patients from Primary (n = 385) and Specialized (n = 385) Health Care. The dependent variable, quality of life, was evaluated by the Diabetes Quality of Life Measure - Brazil. Clinical and sociodemographic data were collected. Bivariate analysis by chi square test tested the association between the dependent variable with the independent ones...
March 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28300569/obesity-as-an-effect-modifier-in-sleep-disordered-breathing-and-post-cardiac-surgery-atrial-fibrillation
#18
Roop Kaw, Samer El Zarif, Lu Wang, James Bena, Eugene Blackstone, Reena Mehra
INTRODUCTION: As the inter-relationships of objectively-ascertained sleep disordered breathing (SDB), post-cardiac surgery atrial fibrillation (PCSAF) and obesity remain unclear; we aimed to further investigate in a clinic-based cohort. METHODS: Patients with polysomnography (PSG) and cardiac surgery (coronary artery bypass surgery and/or valvular surgery) within 3 years, from January 2009 to January 2014 were identified excluding those with pre-existing AF. Logistic models were used to determine the association of SDB (apnea hypopnea index (AHI) per 5 unit increase) and secondary predictors [central sleep apnea (CSA) (central apnea index>5) and oxygen desaturation index (ODI)] with PCSAF...
March 11, 2017: Chest
https://www.readbyqxmd.com/read/28300544/pre-analytical-and-analytical-aspects-affecting-clinical-reliability-of-plasma-glucose-results
#19
REVIEW
Sara Pasqualetti, Federica Braga, Mauro Panteghini
The measurement of plasma glucose (PG) plays a central role in recognizing disturbances in carbohydrate metabolism, with established decision limits that are globally accepted. This requires that PG results are reliable and unequivocally valid no matter where they are obtained. To control the pre-analytical variability of PG and prevent in vitro glycolysis, the use of citrate as rapidly effective glycolysis inhibitor has been proposed. However, the commercial availability of several tubes with studies showing different performance has created confusion among users...
March 11, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28300535/analysis-of-short-chain-fatty-acids-in-human-feces-a-scoping-review
#20
REVIEW
Maša Primec, Dušanka Mičetić-Turk, Tomaž Langerholc
Short-chain fatty acids (SCFAs) play a crucial role in maintaining homeostasis in humans, therefore the importance of a good and reliable SCFAs analytical detection has raised a lot in the past few years. The aim of this scoping review is to show the trends in the development of different methods of SCFAs analysis in feces, based on the literature published in the last eleven years in all major indexing databases. The search criteria included analytical quantification techniques of SCFAs in different human clinical and in vivo studies...
March 12, 2017: Analytical Biochemistry
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