scholarly journals Rapid immunotyping of Chlamydia trachomatis with monoclonal antibodies in a solid-phase enzyme immunoassay.

1985 ◽  
Vol 22 (4) ◽  
pp. 609-613 ◽  
Author(s):  
R C Barnes ◽  
S P Wang ◽  
C C Kuo ◽  
W E Stamm
1983 ◽  
Vol 3 (4) ◽  
pp. 381-388 ◽  
Author(s):  
P. Hérion ◽  
D. Portetelle ◽  
J. -D. Franssen ◽  
J. Urbain ◽  
A. Bollen

Using two monoclonal antibodies directed against urokinase, we have developed a micro enzyme-linked immunosorbant assay (ELISA) to detect and measure urokinase in biological fluids. The system presents the following characteristics: simple and rapid procedure, reproducibility, sensitivity (urokinase levels down to 1 ng/ml) and evaluation of the enzyme in biological fluids such as urine, pleural elfusions, and ascitic fluids without preliminary purification.


1991 ◽  
Vol 31 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Stephan T. Kiessig ◽  
Christian Hentschel ◽  
Sigbert Jahn ◽  
Michael Mehl ◽  
Roland Starke ◽  
...  

1987 ◽  
Vol 33 (1) ◽  
pp. 32-37 ◽  
Author(s):  
V Quesniaux ◽  
R Tees ◽  
M H Schreier ◽  
G Maurer ◽  
M H van Regenmortel

Abstract We show that monitoring of cyclosporine by immunoassay could be improved by using monoclonal antibodies (MAbs) of restricted specificity instead of polyclonal antisera that recognize both unmodified cyclosporine and its metabolites. MAbs with high affinity for cyclosporine have been prepared and characterized. We tested their ability to discriminate between native cyclosporine and its metabolites in indirect solid-phase enzyme immunoassay with a set of cyclosporine metabolites modified at residues 1, 4, 6, and 9 (corresponding to the six known sites of metabolism of cyclosporine). All the metabolites tested were detected by MAb1 at least 15- to 1000-fold less well than unmodified cyclosporine. A second MAb recognized unmodified cyclosporine and most of its metabolites equally well. Both MAbs retained their activity when coupled to alkaline phosphatase and could therefore be used in a direct solid-phase enzyme immunoassay.


1986 ◽  
Vol 87 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Sadakazu Usuda ◽  
Fumio Tsuda ◽  
Tohru Gotanda ◽  
Katsumi Tachibana ◽  
Motozumi Nomura ◽  
...  

2021 ◽  
Vol 29 (5) ◽  
pp. 43-48
Author(s):  
Galina Viktorovna Kuklina ◽  
Denis Valerievich Pechenkin ◽  
Sergei Sergeevich Ipatov ◽  
Andrei Valentinovich Eremkin ◽  
Aleksei Aleksandrovich Kytmanov ◽  
...  

Introduction. The aim of the work was development of enzyme immunoassay for detecting I and II types of shiga-like toxins and assessment of it diagnostic properties. Materials and methods. For the research, we used hybridomas producing monoclonal antibodies to shiga-like toxins of types I and II, obtained at the branch of the Federal State Budgetary Institution “48 Central Research Institute” of the Ministry of Defense of Russian Federation (Kirov); BALB/c mice; shiga-like toxins of types I and II. Hybridoma cells were cultured in culture flasks and in the peritoneal cavity of BALB/c mice. Monoclonal antibodies were isolated from ascitic fluids by precipitation with a saturated solution of ammonium sulfate, followed by purification by ion exchange chromatography. The obtained preparations of monoclonal antibodies were used to develop enzyme immunoassay for the detection of shiga-like toxins of types I and II. Specific components of enzyme immunoassay were freeze-dried in a protective environment. Results. As a result of research, preparative quantities of monoclonal antibodies against I and II types of shiga-like toxins were obtained and purified; selection of monoclonal antibodies for sorption on the solid phase and for the synthesis of immunoperoxidase conjugates was carried out. Conclusion. experimental enzyme immunoassay allowing to identify 1 ng/ml I and II types of shiga-like toxins in «sandwich»-ELISA was developed.


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