Abstract：
:In Alzheimer's disease, cortical areas of affected patients are invaded by extracellular proteinous deposits called senile plaques, the main component of which is called amyloid beta-peptide or A beta. This peptide derives from the proteolytic attack of a precursor, the beta-amyloid precursor protein, by two enzymes called beta- and gamma-secretases. Alternatively, beta APP can be cleaved by an additional activity named alpha-secretase that occurs inside the A beta sequence, thereby precluding its formation, and concomitantly liberating a secreted fragment, namely APP alpha. Therefore, secretases seem to play a key role in the control of physiological and potentially pathogenic beta APP catabolites and could be envisioned as possible therapeutic targets in Alzheimer's disease. Here, we describe possible experimental approaches to identify such proteolytic activities.
journal_name
Ann Biol Clin (Paris)journal_title
Annales de biologie cliniqueauthors
Marambaud P,Chevallier N,Lopez-Perez E,Drouot C,Vizzanova J,Fulcrand P,Martinez J,Wilk S,Checler Fsubject
Has Abstractpub_date
1998-05-01 00:00:00pages
277-84issue
3eissn
0003-3898issn
1950-6112journal_volume
56pub_type
杂志文章,评审abstract：:The analyzers have been defined as follows: the analyzers are multiparametric (at least 5 parameters available simultaneously), selective, operating patient by patient, list price on May 1, 1984 below 1,000,000 francs, and distributed in France after January 1, 1981. This definition applies in particular to systems al...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Primary cancer of the liver, especially common in inter-tropical Africa and South-East Asia, still remains inaccessible to a really effective therapy, except for a rapid surgical excision. Improvement of its particularly poor prognosis requires therefore early screening based on reliable biological markers. Following ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1988-01-01 00:00:00
abstract：:The identification of a product absorbed by an opiate consumer is sometimes problematic since there is no specific biomarker for all molecules. We developed an ultra-high pressure liquid chromatography coupled to tandem mass spectrometry technique which allows the identification and the quantification of 25 opiates in...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2014.0944
更新日期：2014-03-01 00:00:00
abstract：:Red cell ferritin is a residue of erythroblast ferritin. It reflects the balance between the iron supply to the erythroid marrow and the need for haemoglobin synthesis. Erythrocyte ferritin can be measured in haemolysates after discarding plasma and leucocytes by different methods. The decrease in erythrocyte ferritin...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1993-01-01 00:00:00
abstract：:In biochemistry laboratory, monoclonal immunoglobulins are frequently found. They can lead to analytical interferences which are difficult to anticipate. In this case reports, a monoclonal immunoglobulin M with cryoglobulin effect has been responsible of false result of protein electrophoresis because of the whole pre...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：2007-09-01 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：:Guanidinoacetate (GAA) and creatine (Cr) are creatine deficiency syndromes (CDS) biochemical markers. We describe a liquid chromatography - tandem mass spectrometry method (LC/MSMS) performing simultaneous analysis of GAA, Cr and creatinine (Crn). Study of Cr uptake by fibroblasts for Cr transporter defect diagnosis i...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2013.0871
更新日期：2013-07-01 00:00:00
abstract：BACKGROUND:Systematic reviews and meta-analyses can help health-care professionals to base their decisions on the highest levels of evidence, and are therefore the cornerstone in practicing evidence-based medicine. In the field of diagnosis in general, and in laboratory medicine in particular, systematic reviews are sc...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：2004-11-01 00:00:00
abstract：:The multimeric glycoprotein Von Willebrand factor (vWF), is produced by vascular endothelium and platelet. If some constitutionals deficiencies leading to hemorrhagic syndrome have been explored in the literature, increased production of vWF observed during cellular distress and pregnancy have not been explored in our...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2014.0956
更新日期：2014-05-01 00:00:00
abstract：:The need for knowledge concerning foetal pulmonary maturity has led biochemists to develop a number of techniques based upon knowledge of amniotic phospholipids. Study of these phospholipids of foetal pulmonary origin is possible using biochemical and physical methods. The former include the L/S (Lecithin/sphingomyeli...
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 specificity of six peroxidase-labelled anti-albumin monoclonal antibodies was studied by allowing them to react with albumin-derived fragments of known structure comprising the whole albumin molecule. The epitopes corresponding to these antibodies were located on defined regions of the albumin molecule extending f...
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：: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
abstract：:Paroxysmal nocturnal hemoglobinuria (PNH) is a rare acquired hematopoietic stem cell disorder that must be correctly diagnose because it is a chronic disease with a real impact on the quality of life and the survival of the patients. PNH screening of all patients with anemia or thrombosis is not recommended. We report...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2017.1277
更新日期：2017-10-01 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：:Theoretical iron fixation capacity of transferrin (FCT) can be calculated on its immunochemical titration: (FCT (mumol/l = transferrin (g/l) x 25). Today, its reckoning is more advisable to serum total iron binding capacity measurement. The authors studied the effects of this new proceeding upon usual values interval ...
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 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：:We evaluated a rapid and semi-quantitative C-Reactive Protein test on whole blood, the Actim CRP (Fumouze). Based on immuno-chromatography technology, this test ranked the blood sample in four groups: < 10 mg/L, 10-40 mg/L, 40-80 mg/L and > 80 mg/L. This evaluation finds an excellent repeatability, the absence of hook...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：2005-09-01 00:00:00
abstract：:Attention has been drawn in recent years to the diagnostic interest offered by increases in serum gamma GT in the detection of liver metastases and various cancers in man. Although this analysis is not specific and presents a few false positive and negative results, it seems however profitable to include it either in ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1981-01-01 00:00:00
abstract：:Macroprolactin is a complex of prolactin with immunoglobulins (IgG) that has limited or no biological activity in vivo. Immunoassays for prolactin have variable reactivity with macroprolactin. Therefore the presence of macroprolactin should be considered in the differential diagnosis of hyperprolactinemia. We compared...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：:Anti-erythrocyte alloimmunization may occur following the transfusion of platelet concentrates, in response to the presence of residual erythrocytes. Immunization against RH1 (D) antigen is the most frequent, but transfusion of RH1 compatible platelet concentrates is not always possible because of supply constraints. ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2009.0336
更新日期：2009-05-01 00:00:00
abstract：:The clinical use of the direct inhibitors of thrombin requires a reliable test to monitor the treatment and to predict the hemorragic risk. The activated partial thromboplastin time (APTT) is the most common test used to monitor treatment with unfractionated heparin. Thus APTT has been first chosen to follow patients ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：2000-09-01 00:00:00
abstract：:We compared the results of two methods of measurement of HbA(1c) before replacing the current method on Integra 800 by the HPLC method on an apparatus recently put on the market, the G8. The comparative study of the results for 119 patients was carried out. The reproducibility obtained with the G8 method is good with ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2010.0420
更新日期：2010-03-01 00:00:00
abstract：:The relations between chromosomal diseases and mental retardation can be envisaged in three different ways: 1) Pharmacological approach shows a peculiar sensitivity of the cholinergic system in trisomic 21 children. A trouble in the manufacture of cholinergic mediator is plausible. 2) General biochemistry shows a slig...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:Increased level of C reactive protein in the serum of neonates indicates the presence of infection, whereas the classic signs (hyperthermia, neutrophilia...) may often fail. So the determination of C reactive protein is useful and has to be rapidly performed on a small quantity of blood. The authors evaluate a fluores...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
abstract：:Eight Capnocytophaga infections are described: bacteremia in immunodepressed patients (three cases), endocarditis (one case), pneumopathy (one case), buccal infection (two cases) and endometritis during use of an intrauterine contraceptive device (one case). The role of this bacterium in infections presented by immuno...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：:Currently, the dose of anticancer drugs is adjusted according to patient body surface area, although the best criterion for dose adjustment seems to be the plasma concentration of the drug, since a correlation has been established between plasma concentration and efficacy for several drugs. We report here similar resu...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：:The evaluation of the effect of ginger on the modulation of toxic effects induced by chromate is the objective of our study. 50 male rats Albinos Wistar were divided to five groups as follow: group I (T) is served as control, received a mineral water by gavage (per os); group II (G) received an experimental diet with ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：10.1684/abc.2013.0806
更新日期：2013-03-01 00:00:00
abstract：:The aging process is an universal phenomenon. All individuals of a given species are dead by some age characteristic of the species. In spite of many biological and clinical observations on the changes that occur during aging, understanding about the causes of aging or the mechanisms determining "the life span potenti...
journal_title：Annales de biologie clinique
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:Direct oral anticoagulants (DAO), anti-IIa or anti-Xa, are intended to be widely used for the treatment and prevention of thrombotic disorders in venous thromboembolic disease and atrial fibrillation as an alternative of vitamin K antagonists (VKA). Despite predictable pharmacological properties, spontaneous or provok...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：10.1684/abc.2015.1110
更新日期：2016-01-01 00:00:00
abstract：:The recent development of technics of specific fixation using radio isotope-labelled tracer elements permits the demonstration of various types of receptors at the level of the lymphocyte membrane. Thus a new route is open in the understanding of the biochemical mechanisms controlling the physiology of the lymphocyte ...
journal_title：Annales de biologie clinique
pub_type： 杂志文章,评审
doi：
更新日期：1980-01-01 00:00:00
