Abstract：
OBJECTIVES:To have a reliable diagnostic test, the influence of urine pH on the determination of the total activity of N-acetyl-beta-D-glucosaminidase (NAG) and NAG isoenzyme activities was studied. DESIGN AND METHODS:After ultrafiltration and dialysis of the acidic and alkaline urines, the B, A, and A2 forms of NAG were separated by ion-exchange chromatography on DEAE cellulose. RESULTS:A significant decrease in the total activity of NAG in alkaline urines (pH around 8 or higher) was found, which makes this determination unreliable. Analysis of the isoenzymic profiles obtained for weakly acidic and alkaline urines (in the pH range from 5.5. to 10.0) showed that the percent fractions of the individual isoenzyme activities in the total NAG activity and their ratios changed only at pH values above 9.5. CONCLUSIONS:The determination of the denoted isoenzymes of urinary NAG after ultrafiltration, dialysis, and chromatographic separation on DEAE cellulose is reliable in a wide range of alkaline pH values of urine.
journal_name
Clin Biochemjournal_title
Clinical biochemistryauthors
Mandić LM,Aćimović JM,Jovanović VBdoi
10.1016/j.clinbiochem.2005.01.002subject
Has Abstractpub_date
2005-04-01 00:00:00pages
384-9issue
4eissn
0009-9120issn
1873-2933pii
S0009-9120(05)00011-1journal_volume
38pub_type
杂志文章abstract：OBJECTIVES:An increased level of serum vascular adhesion protein-1 (VAP-1) has been found in patients with diabetes mellitus and vascular disorders. This study examined whether serum VAP-1 levels are associated with chronic kidney disease (CKD). DESIGN AND METHODS:We included 262 subjects aged 30 and above with fastin...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2008.06.019
更新日期：2008-11-01 00:00:00
abstract：BACKGROUND:Patients suffering from hemorrhagic fever with renal syndrome (HFRS) often showed strikingly reduced high-density lipoprotein (HDL)-cholesterol levels during the oliguric phase, indicating severe alterations in lipoprotein metabolism. OBJECTIVE:To compare changes in the functions and composition of HDL, lip...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2007.10.007
更新日期：2008-01-01 00:00:00
abstract：OBJECTIVES:This study has been conducted to develop a proper and relatively simple method for purification of three major forms of beta-hCG from urine to use as clinical calibrators and also to produce anti-beta-hCG polyclonal antibodies against these purified forms. DESIGN AND METHODS:Major beta-hCG forms from urine ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2009.05.019
更新日期：2009-09-01 00:00:00
abstract：:Point of Care Testing (POCT) refers to clinical laboratory testing performed outside the central laboratory, nearer to the patient and sometimes at the patient bedside. The testing is usually performed by clinical staff, such as physicians or nurses, who are not laboratory trained. This document was developed by the P...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.clinbiochem.2020.11.008
更新日期：2021-02-01 00:00:00
abstract：OBJECTIVES:To establish whether normal human subjects excrete glycine betaine at a constant rate. DESIGN AND METHODS:Urine was collected from ten normal healthy male subjects for 14 days, during which fluid intake was systematically varied from <800 mL to >3 L per day. Glycine betaine, sorbitol and creatinine excretio...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2006.10.029
更新日期：2007-04-01 00:00:00
abstract：OBJECTIVE:We examined the association of plasma apolipoprotein (apoB) B-48, remnant-like particle (RLP)-cholesterol and non-HDL cholesterol concentrations with apoB-100 kinetics in overweight-obese men. METHODS AND RESULTS:Very-low density lipoprotein (VLDL), intermediate-density lipoprotein (IDL) and low-density lipo...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2005.05.009
更新日期：2005-09-01 00:00:00
abstract：OBJECTIVES:This study aims to report a hitherto un-described α-globin gene triplicated allele with a novel hemoglobin (Hb) variant on α2-globin gene, Hb St.Luke's-Thailand [α95(G2)Pro-Arg]. DESIGNS AND METHODS:A study was done on a 1.5-year-old Thai boy who showed pallor and jaundice after birth. Hb analysis was perfo...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2013.01.022
更新日期：2013-05-01 00:00:00
abstract：OBJECTIVES:Development of an ELISA for human insulin that utilizes monoclonal antibodies (mAbs) produced in serum-free medium. DESIGN AND METHODS:Insulin mAbs were produced in vitro by hybridomas in serum-free medium. A two-step ELISA was developed to replace bovine insulin (standard) and bovine serum albumin (assay b...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2006.10.004
更新日期：2007-01-01 00:00:00
abstract：OBJECTIVES:Hepcidin is the main regulator of systemic iron homeostasis and its expression is modulated by iron status, hypoxia, erythroid factors and inflammation. The aim of our study was to examine a relationship between level of hepcidin and iron status, erythropoietic activity, hypoxia and inflammation in exacerbat...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2015.07.010
更新日期：2015-12-01 00:00:00
abstract：BACKGROUND:Therapeutic drug monitoring (TDM) of the widely prescribed antidepressant fluoxetine (FLU) is recommended in certain situations, such as occurrence of toxicity, inadequate response or suspect of poor adherence. Dried blood spot (DBS) sampling is an increasingly studied alternative for TDM, particularly for o...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2017.10.002
更新日期：2018-02-01 00:00:00
abstract：BACKGROUND:Modern serum protein electrophoresis (SPE) resolves serum proteins in 6 major fractions, splitting beta (B) into beta1 (B1) and beta2 (B2). Beta-migrating monoclonal immunoglobulins (B-MC) commonly integrate into normal-looking peak shape(s) but may increase the fraction value, forming the basis for reflex t...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2018.01.021
更新日期：2018-03-01 00:00:00
abstract：:An early diagnosis is crucial for effective triage and management of patients with suspected acute myocardial infarction (AMI). Although troponin testing is the cornerstone of diagnosis, the sensitivity of this biomarker is still suboptimal at patient admission. The heart-type fatty acid binding protein (H-FABP) is an...
journal_title：Clinical biochemistry
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.clinbiochem.2012.10.016
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVES:Concentrations of troponin measured with high sensitivity troponin assays are raised in a number of emergency department (ED) patients; however many are not diagnosed with acute myocardial infarction (AMI). Clinical comparisons between the early use (2h after presentation) of high sensitivity cardiac troponi...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2013.11.019
更新日期：2014-04-01 00:00:00
abstract：OBJECTIVES:Pseudoxanthoma elasticum (PXE) is a hereditary disorder predominantly affecting the skin, retina and vascular system. The aim of this study was to measure cell adhesion molecules in PXE patients. DESIGN AND METHODS:Soluble P-, E- and L-selectins were measured in 61 non-consanguineous PXE patients. The distr...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2007.12.009
更新日期：2008-04-01 00:00:00
abstract：:A fluorometric procedure based on the Bio-Rad Vanillylmandelic Acid (VMA) by High Performance Liquid Chromatography (HPLC) Test was developed. Detection by fluorescence provides better sensitivity and specificity than the Pisano spectrophotometric method. Use of a C18 mini-column extraction to extract VMA prior to HPL...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(86)80030-3
更新日期：1986-08-01 00:00:00
abstract：OBJECTIVE:To investigate the protective effect of ischemic preconditioning (IP) in the early phase of reperfusion injury. DESIGN AND METHODS:Control rat lungs were subjected to 3 h of perfusion, whereas the lungs of the ischemia-then-reperfusion (I/R) group were subjected to 2 h of cold ischemia following 30 min of pe...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2005.04.002
更新日期：2005-07-01 00:00:00
abstract：:Drug therapy may produce toxicity. Patient individuality or drug interactions account for many cases of poisoning, but other factors such as genetic predisposition, drug contamination or human error are also known causes. Examples of various types of drug poisoning are given, illustrating the role of the clinical chem...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/0009-9120(90)90507-q
更新日期：1990-02-01 00:00:00
abstract：OBJECTIVES:Homologous recombination is a frequent phenomenon in multigene families and as such it occurs several times in both the alpha- and beta-like globin gene families. In numerous occasions, genetic recombination has been previously implicated as a major mechanism that drives mutagenesis in the human globin gene ...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.clinbiochem.2009.07.014
更新日期：2009-12-01 00:00:00
abstract：OBJECTIVES:Prostate specific antigen (PSA) is a widely used and clinically valuable marker for prostate disease. In order to enable the development of new PSA assays and progress the understanding of the biology of PSA we have analyzed PSA in seminal plasma. DESIGN AND METHODS:PSA in seminal plasma from men attending ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2011.11.018
更新日期：2012-03-01 00:00:00
abstract：:Many clinical laboratories use the Beckman Microzone electrophoretic system (Beckman Instruments Inc. Fullerton, CA 92634) for serum protein separation. Although detailed instruction is supplied in the manufacturer's manual (1) for protein separation, the effect of different sample application positions on the cellulo...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(78)80019-8
更新日期：1978-12-01 00:00:00
abstract：BACKGROUND:Plasma concentrations of human chorionic gonadotropin (hCG) have been shown to increase with age due to pituitary secretion. We previously recommended that an hCG cutoff of 14.0IU/L be used for women ≥55years of age. However, it remains unknown whether concentrations >14.0IU/L can be expected in women with a...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2016.11.017
更新日期：2017-03-01 00:00:00
abstract：:Food allergy has a dramatic impact on a child's (and their family's) quality of life and places a major financial burden on the community. It has been hypothesized that the increase in food allergy may relate to the concordant rise in prevalence of vitamin D insufficiency. More recently a second hypothesis has implica...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.clinbiochem.2014.01.033
更新日期：2014-06-01 00:00:00
abstract：:Mycophenolate mofetil is widely used in combination with either cyclosporine or tacrolimus for rejection prophylaxis in renal and heart transplant patients. Although not monitored routinely nearly to the degree that other agents such as cyclosporine or tacrolimus, there is an expanding body of experimental evidence fo...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/s0009-9120(00)00184-3
更新日期：2001-02-01 00:00:00
abstract：OBJECTIVES:We aimed to compare the individuality (within subject consistency) of plasma and urine betaine and N,N-dimethylglycine. DESIGN AND METHODS:In two separate groups of 8 males (ages 19 to 40), plasma (10) and urine (6) samples were collected either over a single day or over an 8 week period. The individuality ...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2009.02.001
更新日期：2009-05-01 00:00:00
abstract：OBJECTIVES:Pleural effusion recognizes heterogeneous etiology and pathogenesis and requires invasive diagnostic procedures. Usually, after pleural fluid analysis, 30-50% of patients with malignant pleural effusion exhibit negative pleural cytology, and the sensitivity of image-guided pleural needle-aspiration biopsy ra...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.clinbiochem.2016.08.006
更新日期：2016-11-01 00:00:00
abstract：OBJECTIVES:All patients who undergo cardiopulmonary bypass (CPB) experience some degree of ischemia reperfusion injury (IRI). Severe IRI-induced acute kidney injury (AKI) occurs in approximately 1-2% of patients undergoing CPB. Previous studies using activity-based protein profiling of urine identified group XV phospho...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2020.12.003
更新日期：2021-02-01 00:00:00
abstract：:A method is described for the determination of low plasma levels of adenosine-5'-diphosphate (ADP) using a Dupont Biometer to measure luminescence produced by the luciferin-luciferase reaction. Endogenous ATP is removed by incubation with luciferase. The remaining ADP is then quantitated, following its conversion to A...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(78)80027-7
更新日期：1978-10-01 00:00:00
abstract：:Inherited and acquired changes in pre-mRNA splicing have been documented to play a significant role in human disease development and many cancer-associated genes are regulated by alternative splicing. Loss of fidelity, variation of the splicing process, even controlled switching to specific splicing alternatives may o...
journal_title：Clinical biochemistry
pub_type： 杂志文章,评审
doi：10.1016/j.clinbiochem.2004.05.015
更新日期：2004-07-01 00:00:00
abstract：:57Co-cyanocobalamin is substituted for iodine labeled antigen in three commercially available solid phase radioimmunoassay kits to evaluate the extent of non-specific binding by determination of the supernatant and residual fraction of unbound ligand and thus obtain a value for corrected binding throughout the range o...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/s0009-9120(78)90070-x
更新日期：1978-06-01 00:00:00
abstract：OBJECTIVES:The fibroblast growth factor receptor 3 gene (FGFR3) plays a critical role in cartilage growth-plate differentiation and bony development. It has been shown that 97% of patients with achondroplasia have a G to A transition mutation at position 1138 (c.1138 G>A) of codon 380 of the FGFR3 gene. DESIGN AND MET...
journal_title：Clinical biochemistry
pub_type： 杂志文章
doi：10.1016/j.clinbiochem.2007.08.014
更新日期：2008-02-01 00:00:00
