Abstract：
:Horseradish peroxidase is often used as an antibody-coupled enzyme and several procedures have been developed to obtain IgG-peroxidase conjugates. The most widely used are coupling with periodate or glutaraldehyde. To compare the efficiency of these methods, the authors conducted periodate coupling or glutaraldehyde coupling in one or two steps, using the same batches of peroxidase, C-reactive protein (CRP) and anti-CRP monoclonal antibodies to develop a specially sensitive Elisa for CRP. Comparison of immunoenzymatic activities showed that periodate-mediated conjugation was much more efficient, because the activity of the coupling products was about 100 times greater than that of the products obtained after one or two-step conjugation with glutaraldehyde. The lower coupling efficiency observed with glutaraldehyde was not due to inactivation of the coupling agent or to a possible decrease in the affinity of the conjugates for CRP due to the coupling procedure. The differences in efficiency can be ascribed to the fact that periodate induced more coupling sites than glutaraldehyde. Periodate is therefore a better coupling agent for preparing conjugates to be used in Elisa or related techniques, in which conjugate size does not hinder accessibility to the antigen.
journal_name
Ann Biol Clin (Paris)journal_title
Annales de biologie cliniqueauthors
Tresca JP,Ricoux R,Pontet M,Engler Rsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
227-31issue
4eissn
0003-3898issn
1950-6112journal_volume
53pub_type
杂志文章abstract：:The recommended conservative treatment of hyperoxaluria is mainly based on hyperhydration and ingestion of inhibitors of crystallization. In accordance with this context, the aim of this study was to determine the in vitro effect of Hordeum vulgare on calcium oxalate crystallization oxalo-dependent. The crystallizatio...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2012.0770
更新日期：2012-11-01 00:00:00
abstract：:Acquired hemophilia A (AHA) is a rare and potentially severe bleeding disorder caused by circulating autoantibodies directed against factor (F) VIII. Apart from idiopathic cases, AHA is associated with autoimmune diseases, cancers, use of medications, pregnancy and the post-partum period. We report the case of a 78-ye...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2018.1405
更新日期：2019-04-01 00:00:00
abstract：:Blood gas analyzers are able to provide information on a wide range of oxygenation parameters. Some of these data are complex. Their biological significance or clinical consistency are not always well known. This article aims to define these parameters, their reference values according to the type of sample; and to ou...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：10.1684/abc.2017.1274
更新日期：2017-12-01 00:00:00
abstract：:Lungs can be the target of many fungal parasitic organisms. Some of them are specific to the lung (Pneumocystis); while others will migrate there in the course of their life cycle (Ascaris) or be caught in it (Paragonimus, Echinococcus). Sometimes, they also generate hypersensitivity reactions (fungi). In making a dia...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1990-01-01 00:00:00
abstract：:Cystatin C is a low molecular weight-protein, which may replace creatinine for the evaluation of renal function, particularly in the clinical settings where the relationship between creatinine production and muscular mass impairs the clinical performance of creatinine. This paper intends to summarize the current knowl...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：10.1684/abc.2008.0227
更新日期：2008-05-01 00:00:00
abstract：:The aim of this study was to evaluate the pre-analytical factors contributing to uncertainty in thyroglobulin measurement in fluids from fine-needle aspiration (FNA) washout of cervical lymph nodes. We studied pre-analytical stability, in different conditions, of 41 samples prepared with concentrated solutions of thyr...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2017.1225
更新日期：2017-04-01 00:00:00
abstract：:This document is a proposal of questionnaire for a self-assessment of the post-examination phase: results validation, reporting and transmitting, post-examination samples keeping and documents archival storage. The questions allow to check that the laboratory fulfils the ISO 15189 Standard and COFRAC SH REF 02 documen...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2012.0675
更新日期：2012-02-01 00:00:00
abstract：:In the perspective of a future request of accreditation according to the NF EN 15189 standard of the sector of prenatal diagnosis of the trisomy 21 foetal, we compared the results obtained for AFP, hCG, free hCG, PAPP-A and for the risks, according to 2 types of blood collection tubes: sterile tube and sterile tube wi...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2015.1032
更新日期：2015-05-01 00:00:00
abstract：:The diagnosis of non ST elevation myocardial infarction (NSTEMI) is very important for the emergency doctor. According to the literature copeptin, a marker of the endogenous stress, combined with troponin could be of interest in this diagnosis. The objective of the study was to investigate the association of high-sens...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2013.0884
更新日期：2013-09-01 00:00:00
abstract：:Caveolae are small pockets or invaginations localized at the plasma membrane. They are enriched in glycosphingolipids, cholesterol, sphingomyelin and lipid-enchored membrane proteins, and they are characterized by a light buoyant density and resistance to solubilization by Triton X-100 at 4 C. Caveolins are the princi...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：2000-03-01 00:00:00
abstract：:We have compared three assays for serum galactosyltransferase activity, which use ovomucoïd, asialo agalactofetuin and free N-acetylglucosamine respectively as exogenous acceptors. A very good correlation between the three assays is obtained, for the whole range of GT activity. When the methods are compared to one ano...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:The presence of A-protein was sought in strains of S. epidermidis and S. aureus, sensitive or resistant to methicillin. The technique used was that of passive hemagglutination of red cells of sheep, either normal or formolated and sensitised by anti-erythrocyte antibodies. A-protein was not found in any of the 157 str...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:Eighteen paraplegics with or without neurogenic osteo-arthropathy (POAN) were evaluated for variations in their urinary excretion levels of total (T), and free (L) hydroxyproline and its non-dialysable (ND) and dialysable (D) peptide fractions. Increases in urinary hydroxyproline, moderate rises in free hydroxyproline...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:The authors describe an immunoassay technique of serum progesterone using a chemiluminescent tracer (LIA): progesterone aminobutylethylisoluminol 11-a-hemisuccinate (P-ABEI). The intrinsic characteristics of this technique were studied. The progesterone concentrations of 62 serum samples were simultaneously titrated u...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:We report a turbidimetric procedure, using commercially available reagents, for the determination of plasma fibronectin with an unmodified centrifugal analyser. Fixed-time kinetic readings at 340 nm were taken at 60 and 720 s. A wide range of concentration (up to 1000 mg/l) can be measured. Precision and accuracy were...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:Immunoassay quantitation of human antibody depends on the availability of reference sera that have been characterized in terms of their antibody content. This report expands upon the concept of "cross-calibration", using reference (dose-response) curves that have been generated with heterologous antibody as a means of...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:In assisted reproductive technology (ART), serum levels of several key hormones are used to evaluate ovarian follicular reserve and to monitor gonadotropin-stimulated follicle growth. Currently, serum estradiol, FSH, LH and inhibin B levels are examined and combined at the beginning of the menstrual cycle to evaluate ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：2003-09-01 00:00:00
abstract：:Spontaneous red blood cell (RBC) fragmentation occurs in some membrane erythropathies like hereditary elliptocytosis (HE); this phenomenon is produced in normal RBC by heating at 49 degrees C, but not at temperatures below this limit; fragmentation is usually quantified by counting the number of fragments/1000 RBC und...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:Anemia is the most common pathology encountered in hematology. Etiologies are numerous, so it is important to adopt a rigorous approach. Complementary examinations must be specific to the clinical situation in order to determine the mechanisms on the one hand and decide the therapeutic management on the other. We repo...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2011.0584
更新日期：2011-05-01 00:00:00
abstract：:Gas-liquid chromatography has been used directly on clinical specimens as a method for presumptive diagnosis of anaerobic infections. This technique proved to be valuable and reliable. Combined with a Gram stain, it offers the possibility to differentiate in less than 1 hour aerobic from anaerobic infections by means ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1983-01-01 00:00:00
abstract：:Evaluation of the neonates for jaundice and kernicterus is indispensable when early hospital discharge has become standard practice. Transcutaneous bilirubin (TcB) measurement is an advantageous option because of its non-invasive nature and the possibility of its use near the patient. The point of care device BiliChec...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：2006-11-01 00:00:00
abstract：:Anti native DNA antibodies (anti nDNA Ab), which are a highly specific feature of systemic lupus erythematosus (SLE) were measured by 3 methods: an enzyme linked immunosorbent assay (ELISA), an indirect immunofluorescence test on Crithidia luciliae (IFCL) and the Farr assay (reference test). 114 sera from patients wit...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:French medical laboratories must be accredited before November 2016 according to NF/EN/ISO 15189 standard. However, technical accreditation guidelines cannot be applied literally for the determination of specific IgE for several reasons: more than 600 allergen tests, lack of international gold standard, limited extern...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2013.0830
更新日期：2013-05-01 00:00:00
abstract：:Salivary cortisol was determined with four commercially available immunoassays: one enzyme-immunoassay (Cortisol Biotrol), two fluoro-immunoassays (TDX, Abbott; Stratus, Baxter) and one radioimmunoassay (Coat-A-Count, Behring). In order to improve the sensitivity of these immunoassays, it was necessary to increase sam...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:We quantify the impact of several variables including site of blood draw, delay in measurement, and use of the cyanide antidote hydroxocobalamin on detection of both normal (<2 mmol/L) and elevated (>6 mmol/L) human plasma lactate. An in vivo study assessed effects of venous or arterial origin of blood samples. Two in...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2017.1310
更新日期：2018-01-01 00:00:00
abstract：:Micro- and nanospheres are tightly associated with the development of flow cytometry. They are indispensable tools to optimize diffraction and fluorescence signals as well as for fluorescence calibration and cellular purification (magnetic micro- and nanospheres). They are also usefull to evaluate phagocytosis and to ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：2004-01-01 00:00:00
abstract：:According to the French legislation on medical biology (January 16th, 2010), all biological laboratories must be accredited according to ISO 15189 for at least 50% of their activities before the end of 2016. The extraction of DNA from a sample of interest, whether solid or liquid is one of the critical steps in molecu...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2013.0891
更新日期：2013-09-01 00:00:00
abstract：:The analysis of longitudinal series of tumour markers during chemotherapy in patients with germ cells tumors is not easy. The purpose of this work is to present various characteristic profiles of the evolution of serum human chorionic gonadotropin during chemotherapy and review the modalities of the dynamic interpreta...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2008.0260
更新日期：2008-09-01 00:00:00
abstract：:Lysosomal storage diseases are genetically determined metabolic diseases characterized by dysmorphology and dysfunction of the lysosomal system. The lysosomal pathology can have different causes; these are (i) the deficiency of a lysosomal enzyme or subunit thereof, (ii) the deficiency of a protein assisting one or mo...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1994-01-01 00:00:00
abstract：:In the present investigation, the immunoglobulins G of human sera were studied after isoelectrofocusing using polyacrylamide flat bed gel. The heterogeneity of immunoglobulins was demonstrated in normal serum as well as in pathological situations. Isoelectrofocusing study was performed using the total serum or the imm...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1983-01-01 00:00:00
