Abstract:
:Immunoglobulin levels are elevated in the acquired immune deficiency syndrome (AIDS) and one class, IgA, has been suggested as a marker of disease progression. IgA is composed of two subclasses, IgA1 and IgA2; circulating IgA1 is roughly 85% of the total in healthy individuals. We have attempted to determine if the subclass distribution in the serum of AIDS patients is similar to that of healthy subjects. IgA subclasses were measured by end-point radial immunodiffusion (RID). Sera from 27 AIDS patients and 27 controls who approximated the age and sex composition of the AIDS group were studied. Total IgA by RID, i.e., the sum of IgA1 and IgA2, correlated well with IgA determined by rate nephelometry (n = 51; r = 0.918; p less than 0.0001). Total IgA (IgAT), IgA1 and IgA2 were significantly elevated in the AIDS group (p less than 0.0001, p = 0.0001 and p = 0.033, respectively). However, the AIDS patients had a roughly equivalent percent IgA1 of total (87.2 +/- 7.6%) as the control group (85.0 +/- 6.1%). The subclass distribution is not altered in AIDS patients, and serum concentrations of IgA subclasses do not reflect possible alterations in secretory IgA which might be expected because of recurrent mucosal infections in these patients; nor is the subclass distribution altered due to clearance of predominantly IgA1-bearing immune complexes.
journal_name
Clin Biochemjournal_title
Clinical biochemistryauthors
Cassulis P,Farhangfar R,DeBari VAdoi
10.1016/0009-9120(91)80020-4subject
Has Abstractpub_date
1991-06-01 00:00:00pages
277-81issue
3eissn
0009-9120issn
1873-2933pii
0009-9120(91)80020-4journal_volume
24pub_type
杂志文章abstract:OBJECTIVE:Heat-mediated ELISA (HELISA) technique has been reported to shorten ELISA timings and has major clinical implications in diagnostic field [Bora U, Kannan K, Nahar P. Heat mediated enzyme linked immunosorbent assay. J Immunol Methods 2004; 293: 43-50]. Objective of this study is to find out whether anti-MBL au...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2007.09.016
更新日期:2008-01-01 00:00:00
abstract::Generally acid phosphatase (ACP) assay is used for testing cases of alleged rape. Comparison of three different chemical methods for Acid Phosphatase (Andersch's method with p-nitrophenyl-phosphate substrate and tartrate inhibitor (A-Tart), Roy's method with thymolphthalein phosphate substrate (R-TMP), and Babson's me...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(77)92784-9
更新日期:1977-10-01 00:00:00
abstract::1. A procedure for the assay of triglycerides on the ABA-50 is described. 2. The Boehringer Mannheim Triglyceride (Fully Enzymatic method) reagent kit has been evaluated with this method and was found to be satisfactory. ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(77)93190-3
更新日期:1977-12-01 00:00:00
abstract:OBJECTIVES:To evaluate the results of oxygen consumption measurement in lymphocytes for the diagnosis and treatment monitoring of pediatric patients with oxidative phosphorylation diseases. DESIGN AND METHODS:Twenty-four children with an oxidative phosphorylation disease were studied. Results were compared with those ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(00)00137-5
更新日期:2000-08-01 00:00:00
abstract::1. We compare the Roche ion-exchange column chromatography and the Merck antibody inhibition reaction for CK-MB fractionation in 51 sera. Measurements of total CK and CK-MB activities must be done under the same conditions for each method in order to correlate the results. 2. A decisional value must be used for the in...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(79)80139-3
更新日期:1979-08-01 00:00:00
abstract:UNLABELLED:Antioxidant capacity testing is commonly used in clinical investigations to provide an estimate of in vitro antioxidant capacity of biosamples. Although beneficial to measure the synergistic contribution of all compounds with antioxidant functionality, assessing the capacity of non-protein fractions or small...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2014.06.021
更新日期:2014-10-01 00:00:00
abstract::Three commercially available assays (an enzyme-linked immunosorbent assay ELISA, an immunoradiometric assay, IRMA, and a nephelometric assay) for the determination of lipoprotein(a) [Lp(a)] were compared with respect to the dependency of these assays on the various apolipoprotein(a) [apo(a)] isoforms. Although there w...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/0009-9120(94)00052-w
更新日期:1994-12-01 00:00:00
abstract::Thyroxine binding protein characteristics were defined in 6 normal subjects, 4 with thyroxine binding globulin (TBG) deficiency, 3 with TBG increase, one with hyperthyroxinemic dysalbuminemia, 7 with severe non-thyroidal illness, and 3 with chronic renal failure. Free thyroxine was measured by Sephadex partition in pl...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(86)80073-x
更新日期:1986-02-01 00:00:00
abstract:OBJECTIVES:In the process of obtaining a driver's license, a healthy 28year old man presented increased levels of disialo-transferrin (TF) (approx. 20%, ref. value<2) by HPLC analysis of TF isoforms (%CDT), while other markers of excessive alcohol consumption (PEth, MCV and γ-GT) were in the normal range. The objective...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2015.12.001
更新日期:2016-04-01 00:00:00
abstract::Autosomal dominant olivopontocerebellar degeneration was evaluated in a family numbering 414 living members. Urine samples were obtained from 5 affected and 5 unaffected not at-risk family members after 4 days on a synthetic diet. 159 urine vapor constituents were measured by gas-liquid and ion-exchange chromatography...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(75)93752-2
更新日期:1975-12-01 00:00:00
abstract::1. A relatively inexpensive semi-automated enzymatic procedure is described for the determination of total glycerol with an Auto Analyzer. Free glycerol is determined without saponification in a deproteinized supernatant. 2. The dilution of triglyceride samples during preparation is such that the samples during prepar...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(77)90232-6
更新日期:1977-02-01 00:00:00
abstract:OBJECTIVES:Microarray analysis of gene expression profiles of blood leukocytes has many potential clinical and research applications. DESIGN AND METHODS:We used the PAXgene Blood RNA System to prepare RNA from the whole blood of normal volunteers using two incubation times followed by gene expression profiling using t...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2004.03.013
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVES:Non-invasive prenatal aneuploidy testing (NIPT) by next-generation sequencing of circulating cell-free DNA in maternal plasma relies on chromosomal ratio (chrratio) measurements to detect aneuploid values that depart from euploid ratios. Diagnostic performances are known to depend on the fraction of fetal DN...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2018.06.015
更新日期:2018-09-01 00:00:00
abstract:OBJECTIVES:The aims of the study were to test the susceptibility of THP-1 macrophages to develop oxidative stress and to deploy antioxidant defense mechanisms that insure the balance between the pro- and antioxidant molecules. DESIGN AND METHODS:Differentiated THP-1 were incubated in the presence or absence of iron-as...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2011.04.012
更新日期:2011-07-01 00:00:00
abstract:UNLABELLED:Frozen biospecimens are crucial for translational research and contain well-preserved nucleic acids and protein. However, the risks of freezer failure as well as space, cost, and environmental concerns of frozen biospecimens are substantial. OBJECTIVE:The purpose of the study was to review the current statu...
journal_title:Clinical biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.clinbiochem.2013.12.011
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVE:To increase the accuracy of non-invasive diagnosis of nonalcoholic fatty liver disease (NAFLD), clinical and laboratory NAFLD indicators were integrated into a diagnostic formula. METHODS:A total of 141 patients with clinically diagnosed NAFLD and 30 healthy controls were enrolled. We collected case history,...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2018.11.011
更新日期:2019-02-01 00:00:00
abstract:INTRODUCTION:The clinical catchment area for the Metabolic service at the Women's and Children's Hospital in Adelaide, South Australia, covers nearly 2.5millionkm2. Care of children with metabolic disorders in these remote areas is assisted from Adelaide, and at times, using plasma ammonia results from laboratories up ...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2016.11.025
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVES:To evaluate impact of risk estimation parameters for screening for Down Syndrome during the first and second trimesters. METHODS:We prospectively examined for their performance in the prenatal prediction of trisomy 21, alphafetoprotein (AFP), unconjugated estriol (uE3), total human chorionic gonadotropin (h...
journal_title:Clinical biochemistry
pub_type: 临床试验,杂志文章
doi:10.1016/0009-9120(95)00021-z
更新日期:1995-08-01 00:00:00
abstract:BACKGROUND:Measurement of 25(OH)D has evolved rapidly, with an increased number of high-throughput automated immunoassays becoming available in recent years. The aim of this study was to fully evaluate six commercially available automated 25(OH)D immunoassays, including 2 newly available (Beckman Coulter) and one recal...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2015.08.005
更新日期:2015-11-01 00:00:00
abstract::Several clinical entities are associated with disorders of fatty acid oxidation or transfer across the inner mitochondrial membrane. Over 40 cases of the primary carnitine deficiency syndrome have been reported to date and various subtypes have been characterized. This represents a large clinical spectrum. The deficie...
journal_title:Clinical biochemistry
pub_type: 杂志文章,评审
doi:10.1016/s0009-9120(87)80090-5
更新日期:1987-02-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to measure soluble receptor for advanced glycation end products (sRAGE) in plasma and synovial fluid of knee osteoarthritis (OA) patients and to determine the correlation between sRAGE levels and disease severity. DESIGN AND METHODS:Thirty-six OA patients and 15 healthy controls we...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2010.07.007
更新日期:2010-09-01 00:00:00
abstract::Bone metabolism is assessed using biochemical bone turnover markers (BTM). BTM reflect the metabolic effect of drugs on bone turnover, help to establish the lowest dose inducing the largest change in the BTM, predict treatment-related reduction in fracture risk, and are helpful in bridging studies. Changes in BTM duri...
journal_title:Clinical biochemistry
pub_type: 杂志文章,评审
doi:10.1016/j.clinbiochem.2012.01.022
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVES:Oxidative stress is considered to be a unifying link between diabetes mellitus (DM) and its complications including nephropathy. The aim of the present study was to evaluate oxidative stress status in Asian Indian patients of type 2 DM with nephropathy. DESIGN AND METHODS:Serum levels of malondialdehyde (MD...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(03)00094-8
更新日期:2003-10-01 00:00:00
abstract::With increasing patient volumes and growing demands for rapid turnaround on many clinical tests, there is a demand for high-throughput technologies. High-Throughput Online Solid-Phase Extraction Tandem Mass Spectrometry is an example of one technology that can achieve these desired results and the RapidFire 365 Mass S...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2016.04.012
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVE:Erythrocyte pyrimidine 5'-nucleotidase (Pyr-5'-N) is highly sensitive to heavy metal inactivation in vitro and in vivo, and a number of studies have verified its usefulness as a biomarker of acute and chronic lead exposures. Retrospective and prospective studies attempted to determine whether the known linear...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(99)00003-x
更新日期:1999-04-01 00:00:00
abstract:OBJECTIVES:An increase in oxidative stress may contribute to the development of oxidative protein damage in the aging rat skeletal muscle. Our aim was to reveal protein carbonyl (PCO), advanced oxidation protein products (AOPP), a novel marker of oxidative stress, and protein thiol (P-SH) levels as markers of protein o...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(02)00407-1
更新日期:2003-02-01 00:00:00
abstract:OBJECTIVES:To determine the serum ratio of holo-ceruloplasmin to total ceruloplasmin in patients with Wilson's disease (WD), we identified apo- and holo-forms of serum ceruloplasmin with native-PAGE electrophoresis. DESIGN AND METHODS:Serum obtained from nine patients with Wilson's disease was subjected to native-PAGE...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2004.09.008
更新日期:2005-01-01 00:00:00
abstract:OBJECTIVES:This study aimed to examine the association between promoter polymorphisms of Th1 and Th2 cytokine genes [interleukin-4 (IL-4 T-34C, A-81G, C-285T and T-589C), IL-6 (G-174C), IL-10 (A-592C and T-819C) and tumour necrosis factor-alpha (TNF-alpha G-238A and G-308A)] and Graves' disease (GD) in Taiwanese popula...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2006.11.009
更新日期:2007-02-01 00:00:00
abstract::Erythrocyte morphology, kinematic viscosity, and membrane lipid composition have not been well documented in heterozygous hypobetalipoproteinemia (HBL). In our study of nine subjects with HBL from two kindreds, three presented with schistocytes (3-6%) while two of them also showed acanthocytosis (25-35%) on their peri...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/s0009-9120(88)80020-1
更新日期:1988-12-01 00:00:00
abstract:OBJECTIVE:MicroRNA-331 (miR-331) has shown regulatory activity against several genes whose expression has been claimed to be deregulated in breast tumors, including that of epidermal growth factor receptor 2 (HER2). Herein, the clinical value of miR-331 expression was investigated by analyzing its levels in breast beni...
journal_title:Clinical biochemistry
pub_type: 杂志文章
doi:10.1016/j.clinbiochem.2018.07.008
更新日期:2018-09-01 00:00:00