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Annals of Clinical Biochemistry

Mike J Hallworth
No abstract text is available yet for this article.
July 2018: Annals of Clinical Biochemistry
Helen Cordy, Soha Zouwail
No abstract text is available yet for this article.
July 2018: Annals of Clinical Biochemistry
Holly Emms, George Farah, Brian Shine, Chris Boot, Barry Toole, Martin McFadden, Leo Lam, Zong-Quan Ou, Gerald Woollard, Hima Madhavaram, Campbell Kyle, Ashley B Grossman
Plasma metanephrines have become the biochemical test of choice for suspected phaeochromocytomas and paragangliomas in many institutions. We encountered two separate cases of significantly elevated plasma metanephrines in patients taking midodrine, a sympathomimetic drug used in the treatment of severe postural hypotension, in the absence of a diagnosis of phaeochromocytomas and paragangliomas. Upon stopping midodrine treatment, plasma metanephrine concentrations returned to normal in both patients. To explore the hypothesis that midodrine or its metabolite desglymidodrine might interfere with the metanephrines assay, we tested the interaction of midodrine with metanephrine assays from two different centres...
July 2018: Annals of Clinical Biochemistry
Yuka Sato, Masanori Seimiya, Toshihiko Yoshida, Yuji Sawabe, Eisaku Hokazono, Susumu Osawa, Kazuyuki Matsushita
Background The indocyanine green retention rate is important for assessing the severity of liver disorders. In the conventional method, blood needs to be collected twice. In the present study, we developed an automated indocyanine green method that does not require blood sampling before intravenous indocyanine green injections and is applicable to an automated biochemical analyser. Methods The serum samples of 471 patients collected before and after intravenous indocyanine green injections and submitted to the clinical laboratory of our hospital were used as samples...
July 2018: Annals of Clinical Biochemistry
P Wainwright, D Wadey, P Cook
Background Diagnosis of Wilson's disease is currently performed using caeruloplasmin as a first-line screening test; however, this test has well-described limitations. Monitoring of known Wilson's disease patients often uses 24-h urine collection; however, this is inaccurate in children. Methods for directly measuring plasma free copper have been described, but no reference interval data exist for a paediatric population. Methods An inductively coupled plasma mass spectrometry method for measuring free copper was developed and validated, using ultracentrifugation...
July 2018: Annals of Clinical Biochemistry
Yanpeng Dai, Junjie Liu, Enwu Yuan, Yushan Li, Quanxian Wang, Liting Jia, Linkai Wang, Yanhua Su
Aims Physiological changes that occur during pregnancy can influence biochemical parameters. Therefore, using reference intervals based on specimens from non-pregnant women to interpret laboratory results during pregnancy may be inappropriate. This study aimed to establish the essential reference intervals for a range of analytes during pregnancy. Methods A cross-sectional study was performed in 13,656 healthy pregnant and 2634 non-pregnant women. Fifteen biochemical measurands relating to renal and hepatic function were analysed using an Olympus AU5400 analyzer (Olympus, Tokyo, Japan)...
July 2018: Annals of Clinical Biochemistry
Hitoshi Ikeda, Mariko Kobayashi, Hiromitsu Kumada, Kenichiro Enooku, Kazuhiko Koike, Makoto Kurano, Masaya Sato, Takahiro Nojiri, Tamaki Kobayashi, Ryunosuke Ohkawa, Satoshi Shimamoto, Koji Igarashi, Junken Aoki, Yutaka Yatomi
Background Because autotaxin reportedly has a better performance than hyaluronic acid as a marker for liver fibrosis for the prediction of cirrhosis caused by hepatitis C, we aimed to further evaluate the role of autotaxin in liver fibrosis of other aetiologies. Methods Autotaxin antigen was measured in serum samples from 108 patients with chronic hepatitis B and 128 patients with non-alcoholic fatty liver disease who had undergone a liver biopsy as well as healthy subjects and patients with chronic kidney disease, diabetes mellitus, rheumatoid arthritis and cardiac dysfunction...
July 2018: Annals of Clinical Biochemistry
Xianjuan Shen, Yajing Xue, Hui Cong, Xudong Wang, Shaoqing Ju
Objectives To explore microRNA-574-3p expression in serum of patients with hepatocellular carcinoma and investigate correlations between serum microRNA-574-3p expression and the development and prognosis of hepatocellular carcinoma. Design and methods Serum samples were collected from 70 patients with primary hepatocellular carcinoma, 40 patients with cirrhosis and 45 healthy controls. Serum microRNA-574-3p expression levels were detected by real-time quantitative polymerase chain reaction. The linearity, specificity and reproducibility were evaluated...
July 2018: Annals of Clinical Biochemistry
Zheng Mao, Gang Liu, Jing-Jie Chen, Dan Liu, Min-Peng Xu, Chang Zhao, Hai-Tao Yang, Yong-Bin Yue
Background The α-melanocyte-stimulating hormone (α-MSH), an endogenous neuropeptide derived from proopiomelanocortin (POMC), has been identified to suppress inflammation and prevent osteoblast damage. Objective The present study was aimed to investigate the role of serum α-MSH in non-traumatic osteonecrosis of the femoral head (ONFH). Methods Seventy-nine patients diagnosed with non-traumatic ONFH and 79 sex- and age-matched healthy controls were enrolled in the study. Serum α-MSH concentrations were examined with a double antibody radioimmunoassay...
July 2018: Annals of Clinical Biochemistry
David J Marshall, Joanne E Adaway, Brian G Keevil
Background Analysis of citrate and oxalate in a 24-h urine sample is important in the screening and monitoring of patients with nephrolithiasis. To streamline the analytical process, it was decided to combine oxalate and citrate and analyse them simultaneously in the same assay. Objective A highly sensitive and specific assay for analysis of urine citrate and oxalate was developed using liquid chromatography-tandem mass spectrometry (LC-MS/MS) with a simple weak anion exchange solid phase extraction (WAX SPE) clean-up procedure...
July 2018: Annals of Clinical Biochemistry
Peter A Kavsak, Chantele Roy, Paul Malinowski, Ching-Tong Mark, Terry Scott, Lorna Clark, Shana Lamers, Craig Ainsworth
Background Analytical comparisons between different high-sensitivity cardiac troponin (hs-cTn) assays are important for reassurance of results performed with different methodologies and to identify potential interferences or confounders to result interpretation. Our objective in the present study was to compare Beckman Coulter's latest hs-cTnI assay to Abbott's hs-cTnI assay and to assess agreement between results. Methods Two hundred ethylenediaminetetraacetic acid plasma samples that had clinically reported hs-cTnI results from the Abbott ARCHITECTi2000 that spanned the analytical range were stored (median = 4 h), re-centrifuged and retested for hs-cTnI on the Abbott ARCHITECTi1000 and Beckman Coulter Access2 analysers...
July 2018: Annals of Clinical Biochemistry
Eiji Munetsuna, Hiroya Yamada, Yoshitaka Ando, Mirai Yamazaki, Yoshiki Tsuboi, Mari Kondo, Genki Mizuno, Hiroaki Ishikawa, Keiko Sugimoto, Keisuke Osakabe, Naohiro Ichino, Koji Ohashi, Nobuyuki Hamajima, Koji Suzuki
Purpose It has been demonstrated that circulating microRNA profiles are affected by physiological conditions. Several studies have demonstrated that microRNAs play important roles in the regulation of adiposity. However, few have investigated the relationship between circulating microRNAs and obesity, which has become a major public health problem worldwide. This study investigated the association between circulating microRNAs and obesity in a Japanese population. Methods Obesity parameters, such as subcutaneous and visceral fat adipose tissue, body fat percentage, and body mass index were assessed in a cross-sectional sample of 526 participants who attended health examinations in Yakumo, Japan...
July 2018: Annals of Clinical Biochemistry
Yashna Rampursat, Rajendra Bhimma, Elaene Naicker, Fozy Peer, Verena Gounden
Background The use of serum creatinine equations for estimating glomerular filtration rate is well known in adults and children. We evaluated the revised Schwartz creatinine-based estimated glomerular filtration rate prediction equation in Black African children in KwaZulu-Natal, South Africa. Methods Review of medical records of all Black African patients aged 2-18 years old who have had glomerular filtration rate determined by intravenous Technetium-99 m-diethylene-triamine-pentaacetate, for the period 1 January 2010 to 31 December 2014 at the Inkosi Albert Luthuli Central Hospital, Durban, South Africa was performed...
July 2018: Annals of Clinical Biochemistry
Mohammad Bagherniya, Sayyed Saeid Khayyatzadeh, Ali Reza Heidari Bakavoli, Gordon A Ferns, Mahmoud Ebrahimi, Mohammad Safarian, Mohsen Nematy, Majid Ghayour-Mobarhan
Background Serum high-sensitive C-reactive protein (hs-CRP) concentrations independently predict the development of diabetes, metabolic syndrome and cardiovascular disease. However, the impact of dietary factors on serum high-sensitive C-reactive protein concentrations in diabetic patients has received limited attention. We aimed to investigate the association between dietary factors and high-sensitive C-reactive protein , among diabetic patients with and without hypertension and healthy subjects. Methods In this cross-sectional study, diabetics with ( n = 325) and without hypertension ( n = 599) and healthy individuals ( n = 1220) were recruited in Mashhad, Iran...
July 2018: Annals of Clinical Biochemistry
Toshihiro Sakurai, Akiko Sakurai, Boris L Vaisman, Takafumi Nishida, Edward B Neufeld, Stephen J Demosky, Maureen L Sampson, Robert D Shamburek, Lita A Freeman, Alan T Remaley
Background Lecithin:cholesterol acyltransferase (LCAT) is a plasma enzyme that esterifies cholesterol. Recombinant human LCAT (rhLCAT) is now being developed as an enzyme replacement therapy for familial LCAT deficiency and as a possible treatment for acute coronary syndrome. The current 'gold standard' assay for LCAT activity involves the use of radioisotopes, thus making it difficult for routine clinical use. Methods We have developed a novel and more convenient LCAT activity assay using fluorescence-labelled cholesterol (BODIPY-cholesterol), which is incorporated into proteoliposomes as a substrate instead of radiolabelled cholesterol...
July 2018: Annals of Clinical Biochemistry
Ines Knani, Hassan Bouzidi, Saoussen Zrour, Naceur Bergaoui, Mohamed Hammami, Mohsen Kerkeni
Background There are limited data regarding the contribution of advanced glycation end products in the presence of rheumatoid arthritis. We investigated whether serum Nɛ -carboxymethyllysine and pentosidine were related to the presence and the severity of rheumatoid arthritis. Methods Eighty patients with rheumatoid arthritis and 30 control subjects were included in a cross-sectional study. The severity of rheumatoid arthritis was assessed using the disease activity score for 28 joints. Serum Nɛ -carboxymethyllysine and pentosidine were measured by enzyme-linked immunosorbent assay...
July 2018: Annals of Clinical Biochemistry
Radha Ramachandran, Jamshid Alaghband-Zadeh, Arun Sankaralingam, Shahid A Khan, Marianne Tavabie, Catrin Fernyhough, Mustafa Sabry, Negar Maghsoodi, Barbara McGowan, Paul V Carroll, Anthony S Wierzbicki
Background The insulin tolerance test is the gold standard for diagnosis of cortisol insufficiency. However, it is cumbersome, invasive, requires supervised hospital facilities and has unpleasant side-effects. A non-invasive outpatient-based test will be useful. We hypothesized that free cortisol concentrations in multiple spot urine samples can be used to diagnose cortisol insufficiency in patients with normal renal function (eGFR > 60 mL/min). Method Patients and controls provided urine samples at bedtime (S1), and first (S2) and second (S3) void the next day...
July 2018: Annals of Clinical Biochemistry
David Ducroq, Annette Thomas
No abstract text is available yet for this article.
May 2018: Annals of Clinical Biochemistry
Jonathan G Middle
No abstract text is available yet for this article.
May 2018: Annals of Clinical Biochemistry
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