Effects of bilirubin and its photoisomers on direct bilirubin measurement using bilirubin oxidase.

abstract：BACKGROUND:Hypercholesterolemia (plasma cholesterol concentration â¥5.2 mmol/L) is a risk factor for cardiovascular disease and stroke. Many different cholesterol self-tests are readily available at general stores, pharmacies and web shops. However, there is limited information on their analytical and diagnostic perfor...

journal_title：Annals of clinical biochemistry

authors： Kurstjens S,Gemen E,Walk S,Njo T,Krabbe J,Gijzen K,Elisen MGLM,Kusters R

更新日期：2021-01-21 00:00:00

abstract：:A real time data processing system for a group of three clinical chemistry laboratories (one base and two satellite) has been developed as a successor to one used previously. This paper describes both the inadequacies of the previous worksheet-based system and the advantages of the new system, including flexibility, f...

journal_title：Annals of clinical biochemistry

authors： Hirst AD,Naylor D,White HL,Walter M

更新日期：1979-01-01 00:00:00

abstract：BACKGROUND:Oxidative stress may play an aetiological role in the development and progression of cardiovascular disease (CVD). However, evidence on its biochemical markers has been controversial. This article aimed to assess the role of F2-isoprostanes, a marker for measuring in vivo lipid oxidation, as a biomarker for ...

journal_title：Annals of clinical biochemistry

authors： Zhang ZJ

更新日期：2013-03-01 00:00:00

abstract：BACKGROUND:Chronic kidney disease (CKD) is an important but under-recognized condition. Recent national guidelines have recommended that biochemistry laboratories report estimated GFR (eGFR) to improve diagnosis of CKD and facilitate disease staging and management. Previous reports have suggested that intake of large a...

journal_title：Annals of clinical biochemistry

authors： Preiss DJ,Godber IM,Lamb EJ,Dalton RN,Gunn IR

更新日期：2007-01-01 00:00:00

abstract：:Background For the early identification of patients at risk of developing diabetic nephropathy, we have developed an ultrasensitive immune complex transfer enzyme immunoassay to measure adiponectin in urine. Methods We developed immune complex transfer enzyme immunoassay for adiponectin and measured urinary adiponecti...

journal_title：Annals of clinical biochemistry

authors： Yamamoto M,Fujimoto Y,Hayashi S,Hashida S

更新日期：2018-09-01 00:00:00

abstract：:Background The aim of the present study is to evaluate the utility of extraction versus non-extraction-based commercial melatonin ELISA kits for determining the melatonin concentration in amniotic fluid obtained in early and late pregnancy. Methods Pregnancy duration less than 28 weeks was defined as early and from 28...

journal_title：Annals of clinical biochemistry

authors： Bagci S,Altuntas Ö,Katzer D,Berg C,Willruth A,Reutter H,Bartmann P,Müller A,Zur B

更新日期：2017-01-01 00:00:00

abstract：:Most UK clinical laboratories use alkaline phosphatase (ALP) methods similar to that proposed by the International Federation of Clinical Chemistry (IFCC), based on the use of 2-amino-2-methyl-1-propanol (AMP) buffer. We present evidence of significant differences in results produced by apparently similar commercial A...

journal_title：Annals of clinical biochemistry

authors： Lamb EJ,Browne M,John WG,Price CP

更新日期：1998-01-01 00:00:00

abstract：BACKGROUND:Neuroendocrine tumours are slow growing tumours known to secrete a variety of vasoactive peptides which give rise to symptoms of the carcinoid syndrome. The diagnosis and monitoring of patients with neuroendocrine tumours is undertaken in many centres using 24 h urinary measurement of 5-hydroxyindoleacetic a...

journal_title：Annals of clinical biochemistry

authors： Adaway JE,Dobson R,Walsh J,Cuthbertson DJ,Monaghan PJ,Trainer PJ,Valle JW,Keevil BG

更新日期：2016-09-01 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 We investigated the in vitro effects of various phospholipids as emulsifiers on the hydrolysing activities of lipoprotein lipase (LPL) Arg243His against triolein as substrate. LPL Arg243His, identified in a patient with hyperchylomicronaemia, displays severely diminished activity for triolein when emulsifie...

journal_title：Annals of clinical biochemistry

authors： Yamaguchi T,Murano T,Tatsuno I,Hiruta N,Suzuki T,Sawada S,Katagiri H,Shirai K,Schneider WJ,Bujo H

更新日期：2017-11-01 00:00:00

abstract：:Auto-antibodies to oxidized low-density lipoprotein (ox-LDL) are thought to play a pivotal role in the pathogenesis of atherosclerosis. This study investigates the value of auto-antibodies to ox-LDL as a predictive marker of atherosclerosis in patients with both homozygous and heterozygous familial hypercholesterolaem...

journal_title：Annals of clinical biochemistry

authors： Paiker JE,Raal FJ,von Arb M

更新日期：2000-03-01 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：:The diagnostic usefulness of fasting total serum bile acids (SBA/F) in the detection of liver diseases and assessment of different aspects of hepatic function alteration was evaluated in 61 healthy subjects and 186 patients with liver disease. The value of SBA/F was compared with other routine tests. In 49 healthy sub...

journal_title：Annals of clinical biochemistry

authors： Cravetto C,Molino G,Biondi AM,Cavanna A,Avagnina P,Frediani S

更新日期：1985-11-01 00:00:00

abstract：:The ischaemic lactate-ammonia test is widely used for investigating patients with muscle pain and fatigue. It involves measuring plasma lactate and ammonia produced as a result of forearm exercise under ischaemic conditions in a fasted subject. Its clinical use is to screen patients with muscle complaints for disorder...

journal_title：Annals of clinical biochemistry

authors： Livingstone C,Chinnery PF,Turnbull DM

更新日期：2001-07-01 00:00:00

abstract：BACKGROUND:There are few data on oxidative stresses during and after pregnancy, although aggravation of autoimmune disease is implicated in oxidative stress and occurs frequently in the postpartum period. Thioredoxin (TRX) is a stress-inducible protein, and is used as a good biomarker for oxidative stress. To clarify t...

journal_title：Annals of clinical biochemistry

authors： Kuroda S,Watanabe M,Santo T,Shimizuishi Y,Takano T,Hidaka Y,Kimura T,Iwatani Y

更新日期：2010-01-01 00:00:00

abstract：BACKGROUND:In the enzyme reaction for the determination of the unbound (free) bilirubin concentration by glucose oxidase and peroxidase, materials with low affinity for serum protein are reactive. The influence of these materials on the determination of serum unbound bilirubin was investigated. METHODS Serum samples fr...

journal_title：Annals of clinical biochemistry

authors： Itoh S,Kawada K,Kusaka T,Yasuda S,Okada H,Imai T,Isobe K

更新日期：2002-11-01 00:00:00

abstract：BACKGROUND:A convenient method for the measurement of sialic acid in plasma apoB-containing lipoproteins is described. METHODS:Dextran sulphate-Mg(2+) precipitation and enzymatic sialic acid assay were combined and applied to analysis of plasma from 96 healthy controls and 136 hyperlipidaemic subjects of types IIa (n=...

journal_title：Annals of clinical biochemistry

authors： Shishino K,Yoshioka Y,Hashimoto K,Ochi M,Aono K,Murase M,Osawa H,Makino H,Saheki S

更新日期：2005-07-01 00:00:00

abstract：BACKGROUND:Patient-based real-time quality control (PBRTQC) techniques have been described in clinical chemistry for over 50 years. PBRTQC has a number of advantages over traditional quality control including commutability, cost and the opportunity for real-time monitoring. However, there are few systematic investigati...

journal_title：Annals of clinical biochemistry

authors： Smith JD,Badrick T,Bowling F

更新日期：2020-05-01 00:00:00

abstract：:We examined the reproducibility of oral glucose tolerance tests (OGTT) using the World Health Organization criterion in 212 Chinese subjects (male 149, female 63) who underwent two 75 g OGTTs within a 6-week period. The overall reproducibility was 65.6% (139/212) of which 74 subjects had normal glucose tolerance, 24 h...

journal_title：Annals of clinical biochemistry

authors： Ko GT,Chan JC,Woo J,Lau E,Yeung VT,Chow CC,Cockram CS

更新日期：1998-01-01 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：:A binding assay for sex hormone binding globulin (SHBG) has been developed in which SHBG is saturated with tritiated dihydrotestosterone (DHT). Separation of bound and free DHT is achieved by using Concanavalin A-Sepharose as a solid phase matrix. The method is described and its performance, including linearity, impre...

journal_title：Annals of clinical biochemistry

authors： Whittaker JA,Cawood ML,Oakey RE

更新日期：1992-03-01 00:00:00

abstract：:A sensitive immunochemiluminometric assay with a detection limit of 1.1 microU/L was developed for the measurement of urinary growth hormone (UGH). The assay was shown to be specific and precise. There was a good correlation between serum growth hormone (GH) and UGH concentrations in 20 patients with acromegaly and si...

journal_title：Annals of clinical biochemistry

authors： Turner G,Brown RC,Weeks I,Butler GE,Creagh FN,Woodhead JS

更新日期：1993-03-01 00:00:00

abstract：:The Bhattacharya method and the 'average of normals' method for internal quality control were compared. Both are based on unselected patient test results. The Bhattacharya method is mostly used in clinical chemistry for calculation of reference intervals but could be modified for quality control procedures. Using the ...

journal_title：Annals of clinical biochemistry

authors： Oosterhuis WP,Modderman TA,Dinkelaar RB,Zwinderman AH,van der Helm HJ

更新日期：1991-07-01 00:00:00

abstract：:The activity of serum deoxycytidylate deaminase, not hitherto reported to increase after myocardial infarction, has been investigated and the results have been related to other cardiac enzymes, including the MB fraction of creatine phosphokinase. Deoxycytidylate deaminase was found to increase to maximum activity on t...

journal_title：Annals of clinical biochemistry

authors： Roberts RG,Davies AG,Jones DD

更新日期：1978-11-01 00:00:00

abstract：:We studied the serum protein binding of 3H-labelled progesterone, oestradiol and testosterone, and five 125I-labelled analogues of these steroids. All tracers investigated appeared to be bound by proteins in every serum sample tested. The addition of blocking agents caused a substantial reduction in serum protein bind...

journal_title：Annals of clinical biochemistry

authors： Micallef JV,Hayes MM,Latif A,Ahsan R,Sufi SB

更新日期：1995-11-01 00:00:00

abstract：:Some inherited metabolic disorders (IMDs) can cause significant complications during pregnancy, affecting the mother and/or the fetus. Although it appears that only a minority of IMDs have these effects, experience is still being acquired. For some disorders, patients will not have reached child-bearing age. Pregnanci...

journal_title：Annals of clinical biochemistry

authors： Preece MA,Green A

更新日期：2002-09-01 00:00:00

abstract：:γ-glutamyltransferase plays a key role in the synthesis and metabolism of extracellular glutathione, a major antioxidant in several defence mechanisms in the body. γ-glutamyltransferase is affected by environmental and genetic factors, and is raised when there is depletion of glutathione. Hence, it is a marker of oxid...

journal_title：Annals of clinical biochemistry

authors： Bulusu S,Sharma M

更新日期：2016-05-01 00:00:00

abstract：:In a group of 121 adult patients with end-stage chronic renal failure who had been undergoing maintenance haemodialysis for up to 10 years a number of biochemical variables have been measured and related to a set of objective radiological changes in the same patients. The changes in plasma calcium, magnesium, phosphat...

journal_title：Annals of clinical biochemistry

authors： Moorhead JF,Varghese Z,Tatler GL,Baillod RA,Wills MR

更新日期：1975-05-01 00:00:00

abstract：:The aim of this study was to assess the performance of a commercially available procedure for detecting anti-Sjögren's syndrome A (anti-SSA) and anti-Sjögren's syndrome B (anti-SSB) antibodies by immunoblotting (IB) and compare it with double immunodiffusion (DID). We also studied the clinical significance of these pr...

journal_title：Annals of clinical biochemistry

authors： Yago M,Belmonte MA,Olmos MJ,Beltran J,Teruel C,Segarra M

更新日期：1999-05-01 00:00:00

abstract：BACKGROUND:It has been suggested that for the accurate measurement of calcium in urine, samples must be collected into bottles containing acid. Acidification poses risks to both patients and laboratory staff. Here we reappraise whether acidification is a preanalytical necessity. METHODS:Twenty-four-hour urine samples ...

journal_title：Annals of clinical biochemistry

authors： Sodi R,Bailey LB,Glaysher J,Allars L,Roberts NB,Marks EM,Fraser WD

更新日期：2009-11-01 00:00:00