Urinary free catecholamines--diagnostic application of an HPLC technique to the investigation of neural crest tumours.

abstract：:Insulin resistance is a common condition, recognized to be a central feature of the metabolic syndrome, and strongly associated with an increased risk of cardiovascular disease and diabetes. The quantitative assessment of insulin sensitivity is not used for routine clinical purposes, but the emerging importance of ins...

journal_title：Annals of clinical biochemistry

authors： Borai A,Livingstone C,Ferns GA

更新日期：2007-07-01 00:00:00

abstract：:Background Accumulating evidence shows an over-abundance of Fusobacterium nucleatum in colorectal tumour tissues. Although stool DNA testing of Fusobacterium nucleatum might be a potential marker for the detection of colorectal tumours, the difficulty in detecting Fusobacterium nucleatum in stool by conventional metho...

journal_title：Annals of clinical biochemistry

authors： Suehiro Y,Sakai K,Nishioka M,Hashimoto S,Takami T,Higaki S,Shindo Y,Hazama S,Oka M,Nagano H,Sakaida I,Yamasaki T

更新日期：2017-01-01 00:00:00

abstract：:Using a high-performance liquid chromatography method, we measured seven commonly prescribed benzodiazepines (chlordiazepoxide, nitrazepam, nordiazepam, oxazepam, lorazepam, temazepam and diazepam) in 100 urine samples obtained from patients attending the Leeds Addiction Unit. All of the urines selected for investigat...

journal_title：Annals of clinical biochemistry

authors： Garretty DJ,Wolff K,Hay AW,Raistrick D

更新日期：1997-01-01 00:00:00

abstract：:Free and total reduced concentrations of D-penicillamine have been measured in the plasma of rheumatoid arthritis patients by HPLC and electro-chemical detection. A reverse-phase ion-pair separation in conjunction with a dual porous graphite electrode satisfied the requirements of robustness, sensitivity, selectivity ...

journal_title：Annals of clinical biochemistry

authors： Webb BA,Richardson SJ,Haslock I

更新日期：1988-03-01 00:00:00

abstract：BACKGROUND:The reporting interval is the incremental value chosen in reporting analyte concentration. Reporting intervals for different analytes are often inappropriately narrow, when analytical imprecision and biological variability are considered. METHODS:We have used statistical techniques to determine intervals fo...

journal_title：Annals of clinical biochemistry

authors： Badrick T,Wilson SR,Dimeski G,Hickman PE

更新日期：2004-09-01 00:00:00

abstract：BACKGROUND:We evaluated the diagnostic discrimination of a new micro-flow cell device (Nanoduct) which measures sweat conductivity in situ at a regional referral centre for cystic fibrosis (CF). METHODS:The device was evaluated in comparison to the measurement of sweat chloride with the established quantitative piloca...

journal_title：Annals of clinical biochemistry

authors： Losty HC,Wheatley H,Doull I

更新日期：2006-09-01 00:00:00

abstract：BACKGROUND:The haptoglobin (Hp) 2-2 phenotype has been known to have less antioxidative activity than Hp 1-1 and Hp 2-1. However, few have reported the relationship between oxidative stress and Hp phenotypes by using oxidized LDL. The relationship between Hp phenotypes and oxidative stress was therefore investigated in...

journal_title：Annals of clinical biochemistry

authors： Lee YW,Min WK,Chun S,Lee W,Park H,Lee YK,Lee DH,Son JE

更新日期：2004-11-01 00:00:00

abstract：:The last 10 years have witnessed radical changes in the definition and diagnosis of the acute coronary syndrome (ACS), including myocardial infarction, as a result of the introduction of sensitive and specific markers of myocardial damage, the cardiac troponins. One barrier to the universal acceptance of these markers...

journal_title：Annals of clinical biochemistry

authors： Lamb EJ,Webb MC,Abbas NA

更新日期：2004-01-01 00:00:00

abstract：BACKGROUND:Combined lipid and glucose point-of-care testing (POCT) devices could facilitate widespread population screening for cardiovascular disease (CVD) and diabetes as part of the NHS Vascular Risk Assessment and Management Program (NHS Health Checks). An evaluation of the Cholestech LDX and CardioChek PA POCT ana...

journal_title：Annals of clinical biochemistry

authors： Whitehead SJ,Ford C,Gama R

更新日期：2014-01-01 00:00:00

abstract：:17-Hydroxyprogesterone (17-OHP) is an intermediate steroid in the adrenal biosynthetic pathway from cholesterol to cortisol and is the substrate for steroid 21-hydroxylase. An inherited deficiency of 21-hydroxylase leads to greatly increased serum concentrations of 17-OHP, while the absence of cortisol synthesis cause...

journal_title：Annals of clinical biochemistry

authors： Honour JW

更新日期：2014-07-01 00:00:00

abstract：:We evaluated a novel assay for the measurement of 1,25 dihydroxyvitamin D (1,25 (OH)2D). Immunoextraction of 1,25(OH)2D is performed using a mini column containing a solid-phase monoclonal antibody followed by radioimmunoassay (RIA) using an 125I-labelled 1,25(OH)2D derivative tracer and Sac-cell separation. The mean ...

journal_title：Annals of clinical biochemistry

authors： Fraser WD,Durham BH,Berry JL,Mawer EB

更新日期：1997-11-01 00:00:00

abstract：:We conducted an electrophoretic analysis of monoclonal gamma-globulin found in the serum of a patient with splenic marginal-zone lymphoma. This monoclonal protein showed electrophoretic mobility to the gamma region and reacted with anti-immunoglobulin (IgG) antiserum but not with anti-kappa or anti-lambda light chain ...

journal_title：Annals of clinical biochemistry

authors： Morita K,Kawamoto H,Takada H,Nakamura S,Ishii K,Okamoto Y

更新日期：2006-03-01 00:00:00

abstract：AIM:The aim of the study was to review the clinical validation process of out of hours critical biochemistry results by a clinical biochemist and its effect on primary care services. METHODS:A prospective study was conducted of all critical results for primary care patients who were analysed out of hours. The nine-mon...

journal_title：Annals of clinical biochemistry

authors： Chandrajay D,Narayanan D,Barth JH

更新日期：2016-03-01 00:00:00

abstract：:Background Point-of-care testing has been developed to provide rapid test results. Most published studies focus on analytical performance, neglecting its impact on patient outcomes. Objective To review the analytical performance and accuracy of point-of-care testing specifically planned for immunoassay and to evaluate...

journal_title：Annals of clinical biochemistry

authors： Pecoraro V,Banfi G,Germagnoli L,Trenti T

更新日期：2017-07-01 00:00:00

abstract：:The presence of antibodies in some patients' serum has long been known to be a potential source of interference in immunoassays, as shown by numerous case reports. These often appear after the introduction of a new analyte (e.g. troponin) and then decrease in number as the topic becomes exhausted. This highlights the ...

journal_title：Annals of clinical biochemistry

authors： Ismail AA,Walker PL,Cawood ML,Barth JH

更新日期：2002-07-01 00:00:00

abstract：:A simple HPLC method for the determination of caffeine and theophylline in plasma is described. Separation of theobromine, paraxanthine, theophylline, beta-hydroxyethyltheophylline and caffeine is obtained using a mobile phase of 1% acetic acid/methanol (83:17, v/v) and a Waters Associates NOVA-PAK C18 column protecte...

journal_title：Annals of clinical biochemistry

authors： Pickard CE,Stewart AD,Hartley R,Lucock MD

更新日期：1986-07-01 00:00:00

abstract：BACKGROUND:Current practice requires regular venous blood samples for monitoring of tacrolimus concentrations post renal transplant requiring regular hospital visits. Mitra devices use volumetric absorptive microsampling technology and absorb a fixed amount of blood (10 μL) from a capillary blood sample. They are a via...

journal_title：Annals of clinical biochemistry

authors： Marshall DJ,Kim JJ,Brand S,Bryne C,Keevil BG

更新日期：2020-09-01 00:00:00

abstract：:The concentrations of serum calcium, parathyroid hormone (PTH), 25 Hydroxyvitamin D (25OHD), and 1,25 Dihydroxyvitamin D (1,25(OH)2D) were determined in 99 Saudi patients with sickle cell disease and in 104 matching healthy controls. Serum calcium and 25OHD were significantly lower in the patients, with 14% and 12% of...

journal_title：Annals of clinical biochemistry

authors： Mohammed S,Addae S,Suleiman S,Adzaku F,Annobil S,Kaddoumi O,Richards J

更新日期：1993-01-01 00:00:00

abstract：:Two cases of hypercholesterolaemic patients are presented in whom raised plasma creatine kinase was noted during treatment with statins. The plasma creatine kinase failed to fall following cessation of therapy. Further investigation revealed the aetiology of the raised plasma creatine kinase to be due to previously un...

journal_title：Annals of clinical biochemistry

authors： Barth JH,Brownjohn AM,Jamieson DR

更新日期：2003-09-01 00:00:00

abstract：BACKGROUND:As lifespan in HIV infection increases, cardiovascular disease has emerged as a cause of morbidity and mortality. Asymmetric dimethylarginine is an established marker of endothelial dysfunction and predicts cardiovascular events. The role of asymmetric dimethylarginine in HIV-related cardiovascular disease h...

journal_title：Annals of clinical biochemistry

authors： Hudson CL,Zemlin AE,Ipp H

更新日期：2014-09-01 00:00:00

abstract：:Thyroglobulin (Tg) is a tumour marker for differentiated thyroid cancer. Interpretation requires a knowledge of the current thyrotropin (TSH) concentration as secretion is TSH-dependent. While a raised serum Tg may be indicative of residual or recurrent thyroid cancer, trauma to the thyroid (e.g. surgical, biopsy or d...

journal_title：Annals of clinical biochemistry

authors： Clark P,Franklyn J

更新日期：2012-07-01 00:00:00

abstract：:Protoporphyrin and zinc-protoporphyrin were measured in the erythrocytes of normal subjects, workers exposed to lead and patients with iron deficiency and erythropoietic protoporphyria (EPP). Results showed significantly higher levels of zinc-protoporphyrin in the lead-exposed workers (P < 0.0001), patients with iron ...

journal_title：Annals of clinical biochemistry

authors： Nelson JC,Westwood M,Allen KR,Newton KE,Barth JH

更新日期：1998-05-01 00:00:00

abstract：BACKGROUND:Inflammation is involved in the pathogenesis of preeclampsia. Omentin is a newly discovered adipokine that possesses an anti-inflammatory function. The aim of this study was to determine the association of serum omentin-1 concentration with the presence and severity of preeclampsia. METHODS:Serum concentrat...

journal_title：Annals of clinical biochemistry

authors： Liu H,Wu J,Wang H,Sheng L,Tang N,Li Y,Hao T

更新日期：2015-03-01 00:00:00

abstract：:The number of known inherited metabolic disorders resulting in an organic aciduria has increased steadily over the past two decades. Prompt and reliable detection is both clinically and technically demanding but is essential if appropriate treatment is to be undertaken. This is the first study of laboratory performanc...

journal_title：Annals of clinical biochemistry

authors： Bonham JR,Downing M,Pollitt RJ,Manning NJ,Carpenter KH,Olpin SE,Allen JC,Worthy E

更新日期：1994-03-01 00:00:00

abstract：:A rapid vacuum-driven procedure, using pre-treated Sep-Pak C18 cartridges, has been developed for the simultaneous extraction of arginine vasopressin (AVP) and atrial natriuretic peptide (ANP) from plasma. Non-specific interference was removed by fractional elution with an aqueous methanol/trifluoroacetic acid (TFA) m...

journal_title：Annals of clinical biochemistry

authors： Penney MD,Hampton D,Oleesky DA,Livingstone C,Mulkerrin E

更新日期：1992-11-01 00:00:00

abstract：BACKGROUND:To investigate the reasons why general practitioners (GPs) request rheumatoid factor (RF) assays, we studied 200 consecutive requests for RF from general practice in 1995. METHOD:By means of an audit questionnaire, we studied 100 negative, 50 positive and 50 borderline RF results and compared these with the...

journal_title：Annals of clinical biochemistry

authors： Sinclair D,Hull RG

更新日期：2003-03-01 00:00:00

abstract：OBJECTIVE:The menstrual cycle-related changes in clinical laboratory values were analysed by use of data obtained in the Asian multicentre study aimed at derivation of common reference intervals for 85 major clinical laboratory tests. METHODS:Among 1876 healthy female volunteers, 893 had regular menstruation. They wer...

journal_title：Annals of clinical biochemistry

authors： Masuda S,Ichihara K,Yamanishi H,Hirano Y,Tanaka Y,Kamisako T,Scientific Committee for Asia-Pasific Federation of Clinical Biochemistry.

更新日期：2016-05-01 00:00:00

abstract：:Ethylene glycol in plasma, urine or dialysis fluid is analysed as the phenylboronate derivative by mixing with acetonitrile/acidified 2,2-dimethoxypropane containing phenylboronic acid. After centrifugation, a portion of the supernatant is analysed directly by gas-liquid chromatography using a 3% OV-101 column at 150 ...

journal_title：Annals of clinical biochemistry

authors： Flanagan RJ,Dawling S,Buckley BM

更新日期：1987-01-01 00:00:00

abstract：:A case is presented of a 41-year-old man with a history of recurrent renal stones over 10 years. Analysis of the stone showed that, although it gave a positive reaction with the non-specific phosphotungstic acid test, uricase failed to identify any urate present. Analysis in a reference laboratory confirmed its compos...

journal_title：Annals of clinical biochemistry

authors： Wilkinson H,Samuell C,Stower M

更新日期：2004-03-01 00:00:00

abstract：:Lack of accuracy in expressing concentrations of specific proteins in different lots of Hyland calibrating reference and quality control materials, supplied for the Hyland PDQ laser nephelometer, prompted an attempt to find alternative and more reliable calibrating materials available commercially. Laser grade (Atlant...

journal_title：Annals of clinical biochemistry

authors： Shulman G

更新日期：1980-07-01 00:00:00