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Journal of Clinical Laboratory Analysis

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https://www.readbyqxmd.com/read/28220979/more-significance-of-tb-igra-except-for-the-diagnose-of-tuberculosis
#1
Jun-Chi Xu, Ze-Yi Li, Xin-Nian Chen, Cui-Lin Shi, Mei-Ying Wu, Hui Chen, Xiao-Yan Zhu, Hua-Feng Song, Min-Juan Wu, Ping Xu
OBJECTIVE: Tuberculosis (TB)-interferon gamma release assay (IGRA) test has the characteristics of short time, high specificity, and high sensitivity, but it lacks the correlation research between TB-IGRA test results and body's immune cells, disease progression and prognosis, which is explored in this study. DESIGN: A retrospective study was carried out on positive TB-IGRA patients who were infected with TB and diagnosed at our hospital from January 2014 to June 2015...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28220977/evaluation-of-di-potassium-and-tri-potassium-edta-evacuated-tubes-for-routine-haematological-testing
#2
Rubaida Mehmood, Rabia Khushi Muhammed, Sajjid Hussain, Aniqa Sana
BACKGROUND: The influence of blood collection devices on laboratory tests is often overlooked. We have discussed here how blood collection materials and devices can alter haematological test results, with an emphasis on blood collection tube (BCT) additives. We have compared K2 & K3-EDTA vacuum tubes of same manufacturer IMPROVACUTER (®) for CBC analysis. METHODS: Blood was collected in both tubes simultaneously. Samples were analysed immediately after collection (<15 minutes) and after 4 hours by MEK-6318J/K Haematology Analyzer...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28220976/evaluation-of-a-new-hemoglobin-a1c-analyzer-for-point-of-care-testing
#3
Rui Zhou, Wei Wang, Zhi-Xin Song, Qing Tong, Qing-Tao Wang
BACKGROUND: There has been an increasing desire for the use of point-of-care testing (POCT) by both primary care clinicians and patients. This study aimed to evaluate the performance of a new POCT analyzer for hemoglobin A1c (HbA1c) testing. METHODS: We assessed the accuracy, precision, and linearity of the POCT HbA1c analyzer (A1C EZ 2.0) with the Tosoh G8 Analyzer as comparative instrument, following the Clinical and Laboratory Standards Institute (CLSI) protocols...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28220972/quantitative-distinction-of-the-morphological-characteristic-of-erythrocyte-precursor-cells-with-texture-analysis-using-gray-level-co-occurrence-matrix
#4
Keigo Kono, Ruka Hayata, Satoru Murakami, Mai Yamamoto, Maiko Kuroki, Kana Nanato, Kazuto Takahashi, Keiko Miwa, Yutaka Tsutsumi, Kazunori Okada, Sanae Kaga, Taisei Mikami, Nobuo Masauzi
BACKGROUND: Morphological characteristics of blood cells are still qualitatively defined. So a texture analysis (Tx) method using gray level co-occurrence matrices (GLCMs; CM-Tx method) was applied to images of erythrocyte precursor cells (EPCs) for quantitatively distinguishing four types of EPC stages: proerythroblast, basophilic erythroblast, polychromatic erythroblast, and orthochromatic erythroblast. METHODS: Fifty-five images of four types of EPCs were downloaded from an atlas uploaded by the Blood Cell Morphology Standardization Subcommittee (BCMSS) of the Japanese Society of Laboratory Hematology (JSLH)...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28220968/an-investigation-of-the-levels-of-vitamins-a-d-and-e-in-the-serum-of-chinese-pregnant-women
#5
Yu-Juan Chen, Zhan-Dong Li, Cui-Ying Mao, Xu Kang, Shu-Hua Zhang
BACKGROUND: Vitamins A, D (Vitamin D2 and vitamin D3) and E, play an important role during pregnancy. METHODS: Sera were collected from 1056 normal pregnant women, who were between 18 and 40 years old, at seven different hospitals in northeastern China. The levels of Vitamin A and E in the sera samples were detected using HPLC (High Performance Liquid Chromatography), and the level of vitamin D was measured by LC-MS (Liquid Chromatography-Mass Spectrometry). Data were analyzed using IBM SPSS Statistics 21...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28217923/limiting-the-testing-of-urea-urea-along-with-every-plasma-creatinine-test
#6
Gao-Ming Zhang, Xu-Xiao Guo, Guo-Ming Zhang
BACKGROUND: We found that it is not necessary to simultaneously detect both creatinine (CREA) and urea until the concentration of CREA is lower than the certain level. To reduce urea testing, we suggest measuring urea only when CREA or estimated glomerular filtration rate (eGFR) exceeds a predetermined limit. MATERIALS AND METHODS: CREA and urea data were analyzed consisting of almost all of people age above 65 years old check-up (n=95441) in Shuyang countryside, and inpatients (n=101631), outpatients (n=18474) and Routine Health Check-up (n=20509) in Shuyang People's Hospital...
February 20, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28217897/captopril-apparently-increase-and-cisplatin-apparently-decrease-human-albumin-concentration-in-artificial-urinary-solutions
#7
Rafał Kuzioła, Barbara Marczewska, Krzysztof Marczewski
BACKGROUND: Measurement of urinary albumin (HSA) is very important in diagnostic of kidney diseases. Much less is known about the possible impact of substances present in urine together with albumin on the results of measurements. METHODS: We investigated the effect of the presence of captopril and cisplatin in the solution on the result of the determination of HSA by native polyacrylamide gel electrophoresis. Protein conformation in the absence and presence of the drugs was examined using Fourier Transform Infrared Spectroscopy (FTIR)...
February 20, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28213956/the-relation-between-international-normalized-ratio-and-mortality-in-acute-pulmonary-embolism-a-retrospective-study
#8
Tuncay Kırış, Selcuk Yazıcı, Gündüz Durmuş, Yiğit Çanga, Mustafa Karaca, Cem Nazlı, Abdullah Dogan
BACKGROUND: Acute pulmonary embolism (PE) is a serious clinical disease characterized by a high mortality rate. The aim of this study was to assess the prognostic value of international normalized ratio (INR) in acute PE patients not on anticoagulant therapy. METHODS: The study included 244 hospitalized acute PE patients who were not receiving previous anticoagulant therapy. Based on their 30-day mortality, patients were categorized as survivors or non-survivors...
February 18, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28213921/maternal-igf1-and-igf1r-polymorphisms-and-the-risk-of-spontaneous-preterm-birth
#9
Jian-Rong He, Yu-Mian Lai, Hui-Hui Liu, Guang-Jian Liu, Wei-Dong Li, Xue-Jiao Fan, Xue-Ling Wei, Xiao-Yan Xia, Ya-Shu Kuang, Xiao-Dan Liu, Nian-Nian Chen, Jin-Hua Lu, Qiao-Zhu Chen, Wei-Bi Mai, Hui-Min Xia, Xiu Qiu
BACKGROUND: The insulin-like growth factor (IGF) pathway was involved in the occurrence of spontaneous preterm birth (SPTB), but little is known regarding the relationship between genetic variations in IGF pathway and the risk of SPTB. We aimed to investigate the associations of IGF1 rs972936 and IGF1 receptor (IGF1R) rs2229765 polymorphisms with SPTB risk in a Chinese population. METHOD: A total of 114 cases of SPTB and 250 controls of term delivery were included from Guangzhou Women and Children's Medical Center, China...
February 18, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28213913/application-of-crs-pcr-rflp-to-identify-cyp1a1-gene-polymorphism
#10
Mingcui Ding, Xiaoran Duan, Xiaolei Feng, Pengpeng Wang, Wei Wang
BACKGROUND: Cytochrome P4501A1 (CYP1A1) is a member of the cytochrome P450 gene family and plays an important role in the metabolism of exogenous and endogenous material. In recent research, it has been shown that its genetic polymorphisms are associated with many diseases. But the isoschizomers such as the BsrDI enzyme required for the detection of this polymorphism are expensive. METHODS: The study used an improved PCR-RFLP method with mismatched base for detection of the single-nucleotide polymorphism rs1048943...
February 18, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28213903/specifics-of-fetuin-a-levels-in-distinct-types-of-chronic-heart-failure
#11
Michael Lichtenauer, Bernhard Wernly, Vera Paar, Ilonka Rohm, Christian Jung, Atilla Yilmaz, Uta C Hoppe, Paul Christian Schulze, Daniel Kretzschmar, Rudin Pistulli
INTRODUCTION: Fetuin-A has been described to correlate inversely with vascular calcification both in animal models but also in patients with heart and renal disease. In this current study, we sought to investigate whether fetuin-A might be a useful marker for the discrimination of ischemic (ICM) from dilated cardiomyopathy (DCM). METHODS: A total of 124 non-consecutive patients were included in this study, 59 patients suffered from ICM and 65 patients from DCM. Serum samples were obtained during out-patient visits and analyzed for fetuin-A by ELISA...
February 18, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205320/trace-elements-in-children-suffering-from-sickle-cell-anemia-a%C3%A2-case-control-study
#12
Joseph K Sungu, Olivier Mukuku, Augustin Mulangu Mutombo, Paul Mawaw, Michel N Aloni, Oscar N Luboya
BACKGROUND: Information on serum albumin and trace elements among children suffering from Sickle Cell Anemia (SCA) was poorly documented in Africa. The aim of this study was to describe and to compare different values of trace elements with published reports from other parts of the world. METHODS: We carried out a case-control study. Seventy-six steady state children suffering from SCA (Hb-SS). One hundred and fifty-two children were recruited with 76 (cases, Hb-SS) and 76 (control, Hb-AA) to compare the data...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205314/comparison-of-lc-ms-ms-vs-chemiluminescent-microparticle-immunoassay-in-measuring-the-valproic-acid-concentration-in-plasma-of-epilepsy-patients-in-a-new-perspective
#13
Zhipeng Wang, Yunlei Yun, Xinfang Xie, Chunhua You, Haijun Miao, Feng Zhang, Shouhong Gao, Wansheng Chen
OBJECTIVES: This study was designed to compare the performance of LC-MS/MS with chemiluminescent microparticle immunoassay (CMIA) for determination of VPA in epilepsy patients in the perspective of metabolites' hepatotoxicity. METHOD: Samples were collected and then analyzed using both LC-MS/MS and CMIA. A LO2 cells (normal human hepatic cells) experiment was carried out to confirm VPA metabolites' hepatotoxicity using AST(Aspertate Aminotransferase, AST), ALT(Alanine aminotransferase, ALT) and LDH(lactate dehydrogenase, LDH) in supernate as index...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205286/association-of-mmp-9-gene-polymorphisms-with-nephrolithiasis-patients
#14
Atheer Awad Mehde, Wesen Adel Mehdi, Faridah Yusof, Raha Ahmed Raus, Zaima Azira Zainal Abidin, Hamid Ghazali, Azlina Abd Rahman
BACKGROUND: Nephrolithiasis is one of the causes which lead to chronic kidney disease (CKD). Matrix metalloproteinases (MMPs) are endopeptidases degrading extracellular matrix which correlate with the pathogenesis of atherosclerosis. The current study was designed to analyze the association of (R279Q, C1562T) polymorphism of MMP-9 with nephrolithiasis patients. METHODS: Genotyping of MMP-9/R279Q and of MMP-9/C1562T polymorphism were carried out by PCR-based restriction digestion method...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205274/genetic-variants-rs1994016-and-rs3825807-in-adamts7-affect-its-mrna-expression-in-atherosclerotic-occlusive-peripheral-arterial-disease
#15
Burcu Bayoglu, Caner Arslan, Cigdem Tel, Turgut Ulutin, Ahmet Dirican, Serkan Burc Deser, Mujgan Cengiz
AIM: Peripheral artery disease (PAD) is a vascular disease affecting peripheral circulation. Recently, genome-wide association studies revealed a relationship between single nucleotide polymorphisms (SNPs) in ADAMTS7 (a disintegrin and metalloprotease with thrombospondin motif 7) and atherosclerosis. In this study, we aimed to determine ADAMTS7 expression in peripheral blood mononuclear cells (PBMCs) and the frequency of ADAMTS7 rs1994016 and rs3825807 polymorphisms in a sample of Turkish patients with PAD, and to evaluate the association of matrix metalloproteinase (MMP) levels with PAD development...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205271/lean-six-sigma-methodologies-improve-clinical-laboratory-efficiency-and-reduce-turnaround-times
#16
Tamer C Inal, Ozlem Goruroglu Ozturk, Filiz Kibar, Salih Cetiner, Selcuk Matyar, Gulcin Daglioglu, Akgun Yaman
BACKGROUND: Organizing work flow is a major task of laboratory management. Recently, clinical laboratories have started to adopt methodologies such as Lean Six Sigma and some successful implementations have been reported. This study used Lean Six Sigma to simplify the laboratory work process and decrease the turnaround time by eliminating non-value-adding steps. METHODS: The five-stage Six Sigma system known as define, measure, analyze, improve, and control (DMAIC) is used to identify and solve problems...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205269/evaluation-and-comparison-of-abbott-jaffe-and-enzymatic-creatinine-methods-could-the-old-method-meet-the-new-requirements
#17
Tuncay Küme, Barıs Sağlam, Cem Ergon, Ali Rıza Sisman
BACKGROUND: The aim of this study is to evaluate and compare the analytical performance characteristics of the two creatinine methods based on the Jaffe and enzymatic methods. METHODS: Two original creatinine methods, Jaffe and enzymatic, were evaluated on Architect c16000 automated analyzer via limit of detection (LOD) and limit of quantitation (LOQ), linearity, intra-assay and inter-assay precision, and comparability in serum and urine samples. The method comparison and bias estimation using patient samples according to CLSI guideline were performed on 230 serum and 141 urine samples by analyzing on the same auto-analyzer...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205267/comparison-of-advansure-hpv-genoblot-and-hybrid%C3%A2-capture%C3%A2-2-assays-for-detection-of-hpv-infection
#18
Kiwoong Ko, Shinae Yu, Min-Jung Kwon, Eun Hee Lee, Hee-Yeon Woo, Hyosoon Park
BACKGROUND: We sought to compare the performance of the AdvanSure assay to the Hybrid Capture (HC) 2 for the detection of high-risk human papillomavirus (HR HPV). METHODS: A total of 855 cervical swab specimens were obtained. We submitted all specimens for HR HPV detection with HC2 and the AdvanSure assay. We subsequently analyzed discordant results and specimens that were positive on both assays using restriction fragment mass polymorphism (RFMP) genotyping analysis...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205257/status-of-internal-quality-control-for-thyroid-hormones-immunoassays-from-2011-to-2016-in-china
#19
Shishi Zhang, Wei Wang, Haijian Zhao, Falin He, Kun Zhong, Shuai Yuan, Zhiguo Wang
BACKGROUND: Internal quality control (IQC) plays a key role in the evaluation of precision performance in clinical laboratories. This report aims to present precision status of thyroid hormones immunoassays from 2011 to 2016 in China. METHODS: Through Clinet-EQA reporting system, IQC information of Triiodothyronine and Thyroxine in the form of free and total (FT3, TT3, FT4, TT4), as well as Thyroid Stimulating Hormone (TSH) were collected from participant laboratories submitting IQC data in February, 2011-2016...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28205254/manganese-and-selenium-concentrations-in-cerebrospinal-fluid-of-seriously-ill-children
#20
Tomáš Franěk, Karel Kotaška, Richard Průša
BACKGROUND: The homeostasis of essential trace elements such as selenium and manganese may be altered in patients with severe diseases of various etiologies (trauma brain injuries, tumors, leukemias, lymphomas, neurological diseases). METHODS: Concentration of manganese and selenium were determined in cerebrospinal fluid by electrothermal atomic absorption spectrometry in 50 hospitalized children with various clinical ethiologies including oncological, neurological, and brain related diseases...
February 15, 2017: Journal of Clinical Laboratory Analysis
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