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Journal of Clinical Laboratory Analysis

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https://www.readbyqxmd.com/read/27911021/a-rapid-and-simple-liquid-chromatography-tandem-mass-spectrometry-method-for-the-measurement-of-testosterone-androstenedione-and-dehydroepiandrosterone-in-human-serum
#1
Wenjuan Xu, Huijun Li, Qing Guan, Ying Shen, Liming Cheng
BACKGROUND: The assay of androgens plays an important role for the differential diagnosis of androgen-related endocrine diseases. We developed a rapid and simple liquid chromatography tandem mass spectrometry (LC-MS/MS) method with small sample volume and simple sample preparation for simultaneous determination of serum testosterone, androstenedione and dehydroepiandrosterone (DHEA) in adults. METHODS: We spiked 100 μL of serum with 200 μL of internal standard solution, which was prepared in methanol, for matrix effect relief and protein precipitation...
December 2, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27910999/relationship-between-serum-cytokines-receptors-and-matrix-metalloproteinase-9-levels-and-coronary-artery-disease
#2
Seyed Reza Mirhafez, Amir Avan, Mohammad Tajfard, Shabnam Mohammadi, Mohsen Moohebati, Arash Fallah, Hamed Ghazavi, Hossein Savadi, Majid Ghayour Mobarhan
BACKGROUND: The prevalence of coronary artery disease (CAD) is increasing globally, supporting the need for the identification of novel biomarkers. Therefore in the present study, we have explored the association of SIL2A, SIL6R, STNFRI, STNFRII, and MMP9 in CAD patients. METHODS: Twenty one patients with angiographically defined CAD with more than 50% occlusion, at least, in one coronary artery and twenty healthy subjects (n=20) without the history of cardiovascular symptoms were enrolled...
December 2, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27897324/serum-cystatin-c-is-not-superior-to-serum-creatinine-for-early-diagnosis-of-contrast-induced-nephropathy-in-patients-who-underwent-angiography
#3
Qian Xu, Na-Na Wang, Shao-Bin Duan, Na Liu, Rong Lei, Wei Cheng, Shun-Ke Zhou
BACKGROUND: Iodiated contrast-induced nephropathy (CIN) is a serious complication of contrast-enhanced imaging. The aim of this study was to evaluate the diagnostic sensitivities and specificities of serum cystatin C (sCys C) and serum creatinine (sCr) for CIN and to further investigate difference of the incidence, risk factors, and in-hospital and 3-month prognosis of CIN according to sCys C criteria and sCr criteria. METHODS: We prospectively evaluated 213 patients who underwent angiography...
November 29, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27897313/the-impact-of-fist-clenching-and-its-maintenance-during-venipuncture-on-routine-hematology-testing
#4
Gabriel Lima-Oliveira, Gian Cesare Guidi, Gian Luca Salvagno, Giuseppe Lippi
BACKGROUND: Prevention of a disturbance of the blood vessel allows phlebotomists to collect a blood specimen by venipuncture that will truly mirror the patient condition. This study was aimed to evaluate the impact of repeated fist clenching and maintenance of the fist during blood collection by venipuncture for routine hematology testing. METHODS: Blood were collected from 16 healthy volunteers with two separate sequential procedures, entailing standard venipuncture with hand opened throughout blood collection, or clenching the fist six times before venipuncture and maintaining the fist until completion of blood collection...
November 29, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27892628/association-between-foxp3-gene-polymorphisms-and-risk-of-differentiated-thyroid-cancer-in-chinese-han-population
#5
Weichao Jiang, Lei Zheng, Lijuan Xu, Yang Zhang, Xingxin Liu, Lihua Hu, Xiaobei Wang
BACKGROUND: Foxp3 plays important roles in autoimmune and inflammatory diseases as well as human malignancies. This study aimed to investigate the association between Foxp3 gene polymorphisms and the susceptibility to differentiated thyroid cancers (DTC). METHODS: Genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 350 DTC patients and 306 healthy controls. FOXP3 relative expression was measured by real-time quantitative PCR (qRT-PCR)...
November 28, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27883249/n-acetyl-transferase-2-environmental-factors-and-their-association-as-a-modulating-risk-factor-for-sporadic-colon-and-rectal-cancer
#6
Lucia M Procopciuc, Gelu Osian, Mihaela Iancu
OBJECTIVES: The aim of this study was to evaluate the association between environmental factors and colon or rectal cancer after adjusting for N-acetyl transferase 2 (NAT2) phenotypes. METHODS: Ninety-six patients with sporadic colon cancer, 54 with sporadic rectal cancer and 162 control subjects were genotyped for NAT2-T341C, G590A, G857A, A845C, and C481T using sequencing and PCR-RFLP analysis. RESULTS: The risk for colon cancer was increased in carriers of the homozygous negative genotypes for NAT2*5C-T341C, NAT2*6B-G590A, NAT2*7B-G857A, NAT2*18-A845C, and NAT2*5A-C481T...
November 24, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27878995/myostatin-serum-concentrations-are-correlated-with-the-severity-of-knee-osteoarthritis
#7
Chang Zhao, Yan Shao, Chuangxin Lin, Chun Zeng, Hang Fang, Jianying Pan, Daozhang Cai
OBJECTIVE: Myostatin, a member of the transforming growth factor-β family, contributes to joint deterioration in mice. Thus, we aimed to assess the correlation of myostatin concentrations with the presence and severity of knee osteoarthritis (OA). MATERIAL AND METHODS: We determined serum and synovial fluid (SF) myostatin concentrations in a population of 184 patients with knee OA and 109 healthy controls. RESULTS: The knee OA group presented with higher serum myostatin concentrations than the controls...
November 23, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27868236/national-continuous-surveys-on-internal-quality-control-for-hba1c-in-306-clinical-laboratories-of-china-from-2012-to-2016-continual-improvement
#8
Tingting Li, Wei Wang, Haijian Zhao, Falin He, Kun Zhong, Shuai Yuan, Zhiguo Wang
BACKGROUND: This study aimed to evaluate whether the quality performance of clinical laboratories in China has been greatly improved and whether Internal Quality Control (IQC) practice of HbA1c has also been changed since National Center for Clinical Laboratories (NCCL) of China organized laboratories to report IQC data for HbA1c in 2012. METHODS: Internal Quality Control information of 306 External Quality Assessment (EQA) participant laboratories which kept reporting IQC data in February from 2012 to 2016 were collected by Web-based EQA system...
November 21, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27859632/the-establishment-of-biological-reference-intervals-of-nontraditional-glycemic-markers-in-a-chinese-population
#9
Qiang Zhou, De-Bao Shi, Li-Ying Lv
BACKGROUND: We established the reference intervals for glycated albumin (GA), fructosamine (FA), and 1,5-anhydroglucitol (1,5-AG) in a Chinese healthy population. METHODS: This study enrolled a total of 458 eligible reference individuals, consisted of 226 men and 232 women, aged from 20~79 years (median age 43 years), who attending routine healthy checks. We stratified the subjects according to gender (males and females) and age (20-39, 40-59, and 60-79 years), and combined statistical methods with Lahti algorithm, as well as appropriate clinical consideration, to judge whether partitioning for data was needed...
November 17, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27862350/establishment-of-complete-blood-count-reference-intervals-for-chinese-preschoolers
#10
Guo-Cheng Wang, Na Li, Cui Niu, Wei-Bo Ma, Zhu-Liang Wang, Hao Guo, Li-Hong Han
BACKGROUND: Reference intervals are critical for interpreting test results of a clinical laboratory. The aim of this study was to establish local reference intervals of complete blood count for healthy preschoolers in China. METHODS: Three thousand eight hundred and twenty-one blood specimens from children aged 4 months to 6 years were collected and analyzed. Complete blood counts were determined by Sysmex XT-4000i Automated Hematology Analyzer. The nonparametric 2...
November 15, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27859736/relationship-between-a163g-osteoprotegerin-gene-polymorphism-and-other-osteoporosis-parameters-in-roma-and-non-roma-postmenopausal-women-in-eastern-slovakia
#11
Marta Mydlárová Blaščáková, Ľudmila Blaščáková, Janka Poráčová, Jozef Mydlár, Janka Vašková, Jarmila Bernasovská, Iveta Boroňová, Eva Petrejčíková, Ivan Bernasovský
BACKGROUND: The study was focused on evaluating the possible correlation between biochemical, anthropometric, and genetic indicators of osteoporosis in postmenopausal women. The frequency of genotypes and differences in measured parameters were evaluated within two ethnically different groups of women in Slovakia. METHODS: The study included 310 postmenopausal women divided into non-Roma and Roma groups. Based on results of densitometry, they were divided into control groups and women with osteoporosis and osteopenia...
November 15, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27859671/rapid-differentiation-of-cocci-mixed-bacteria-from-rods-in-voided-urine-culture-of-women-with-uncomplicated-urinary-tract-infections
#12
Chun-Chun Yang, Stephen Shei-Dei Yang, Hui-Ching Hung, I-Ni Chiang, Chiung-Hui Peng, Shang-Jen Chang
OBJECTIVES: To evaluate the ability of laser flow cytometry to predict cocci/mixed growth in the pre-analytical phase of urine specimens. METHODS: We retrospectively reviewed urine samples from women with uncomplicated urinary tract infections from urologic clinics for study. Urine analyses were performed with laser flow cytometry (UF1000i, Sysmex, Kobe, Japan) and then diagrams were generated (forward scatter vs. fluorescent light scatter). Each specimen (bacteria count >357 BACT/μL) was classified as either cocci bacteria or rods/mixed growth according to the diagrams...
November 15, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27859624/hemolysis-index-to-detect-degree-of-hydroxocobalamin-interference-with-common-laboratory-tests
#13
Laura Fueyo, Juan Robles, Irene Aguilar, Aina M Yáñez, Magdalena Socias, Magdalena Parera
BACKGROUND: Cyanokit(®) (hydroxocobalamin OHCo) is the recommended treatment for cyanide poisoning. OHCo is a red chromophore and may cause interference with some biochemical measurements. In this study, we assessed the possible interference of Cyanokit on several cooximetric and plasma biochemistry tests and then determined the possible mathematical correction for some analytes. We studied the possibility of detecting and evaluating the degree of interference with the hemolysis index (HI) provided by our autoanalyzer because it is not possible to measure the OHCo concentration in conventional laboratories...
November 10, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27862306/assessment-of-genetic-diversity-in-il-6-and-rantes-promoters-and-their-level-in-saudi-coronary-artery-disease-patients
#14
Nasimudeen R Jabir, Chelapram K Firoz, Mohammad A Kamal, Ghazi A Damanhouri, Mohammed Nabil Alama, Anas S Alzahrani, Hussein A Almehdar, Shams Tabrez
BACKGROUND: The present study consisted of a total of 200 subjects (100 confirmed coronary artery disease (CAD) patients), both men and women, and 100 healthy control individuals. METHODS: Serum concentration of IL-6 and RANTES were measured by enzyme-linked immunosorbent assay kit. For SNPs analysis, sanger method of DNA sequencing was followed. RESULTS: We observed variable numbers of SNP sites at -174 G/C, -572 G/C, and -597 G/A in IL-6 and -28 C/G and -109 C/T in RANTES promoters in CAD patients compared with control individuals...
November 9, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27809366/predictive-value-of-serum-pregnancy-associated-plasma-protein-a-for-patients-with-ischemic-cerebrovascular-disease
#15
Shun Wang, Jun Jiang, Chuncheng Qu, Chengwei Wang, Zhaohui Sun
BACKGROUND: To investigate the role of pregnancy-associated plasma protein A (PAPP-A) in the outcome of ischemic cerebrovascular disease. METHODS: We analyzed the levels of PAPP-A in the transient ischemic attack (TIA) patients, ischemic stroke (IS) patients and normal control, and followed up the outcome of the patients in the following 2 years. Blood samples were drawn at admission, prior to treatment with heparins. RESULTS: The levels of PAPP-A in TIA patients, IS patients and normal control were 4...
November 3, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27807886/the-expression-of-cytokine-and-its-significance-for-the-intervertebral-disks-of-kazakhs
#16
Miao Xiaogang, Hou Quanshan, Zhang Liping, Habaxi Kaken
BACKGROUND: Proinflammatory cytokine IL-6 and anti-inflammatory cytokine IL-10 are expressed in herniated intervertebral disks of Kazakhs, but their significance is not yet understood. METHODS: Specimens of herniated lumbar disk were collected from 30 patients with single disk herniation during lumbar discectomy. As a control, 10 specimens were collected postmortem from the cadavers of individuals who did not die from spinal disease. The clinical symptoms in all cases were evaluated preoperation by the JOA index...
November 3, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27801524/detection-of-pct-and-urinary-%C3%AE-2-mg-enhances-the-accuracy-for-localization-diagnosing-pediatric-urinary-tract-infection
#17
Jian Fang, Jiangwei Luan, Gaohong Zhu, Chang Qi, Dandan Wang
OBJECTIVE: The purpose of this article was to investigate whether the combination of urinary beta 2 microglobulin (urinary β2 -MG) and procalcitonin (PCT) diagnosis could enhance the localization diagnostic precision of pediatric urinary tract infection comparing with single diagnosis. METHODS: A study was conducted in the Nephrology Department of Wuhan women and children's health care centre. This study incorporated 85 participants, including 35 children who were diagnosed as upper urinary tract infection (UUTI) with the symptom of fever and 50 children who conducted lower urinary tract infection (LUTI)...
November 1, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27800636/diagnostic-value-of-autoantibodies-combined-detection-for-rheumatoid-arthritis
#18
Pingping Sun, Wanhai Wang, Ling Chen, Nan Li, Xianchun Meng, Jing Bian, Jingjing Yang, Xu'na Wang, Weitao Zhu, Liang Ming
BACKGROUND: Rheumatoid arthritis (RA) is a chronic, inflammatory and autoimmune disease, there are many autoantibodies produced during disease progression in the patients' serum, and this work is to select a best detection scheme for RA diagnosis. METHODS: Autoantibody levels including rheumatoid factor (RF), anti-cyclic citrullinated peptide (CCP), mutated citrullinated vimentin (MCV), anti-keratin antibodies(AKA), anti-perinuclear factor (APF), and Ig heavy chain binding protein (BIP), were measured, and the sensitivity, specificity, predictive values, accuracy, and Youden's index of different combining forms were all calculated in RA patients, disease, and healthy control group...
November 1, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27797407/platelet-aggregometry-cannot-identify-uremic-platelet-dysfunction-in-heart-failure-patients-prior-to-cardiac-surgery
#19
Josh Showalter, Nghia D Nguyen, Samer Baba, Chi Hyun Lee, Jing Ning, Kimberly Klein, M Amer Wahed, Ashok Tholpady
BACKGROUND: Patients with heart failure often have concomitant renal disease which can result in uremic platelet dysfunction. Determining whether uremia has affected platelets by platelet aggregometry can be challenging in these patients since they are often on antiplatelet medications. This study was undertaken to determine if platelet aggregation studies could identify heart failure patients at risk for uremic bleeding prior to cardiac surgery. METHODS: Platelet aggregation studies from three groups were studied and compared: 17 heart failure patients with mild to moderate renal impairment, 17 heart failure patients without renal abnormalities and 17 healthy volunteers...
October 31, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27796051/change-of-cystatin-c-values-in-preterm-infants-with-asphyxia-from-two-centers-of-china
#20
Yang Yang, Yue Wu, Jing-Jing Pan, Rui Cheng
BACKGROUND: To explore the values of cystatin C (Cys-C) in asphyxial preterm babies as an effective endogenous marker of renal function. METHODS: After birth, preterm infants with 5-minute Apgar score <8 were included into the asphyxia group. Finally, 276 preterm infants born in two neonatal intensive care units were studied (including 78 babies in the asphyxia group and 198 babies in the control group). Blood samples were obtained from peripheral veins on day 1, day 7, and day 28 when routine blood screening tests were performed...
October 31, 2016: Journal of Clinical Laboratory Analysis
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