Results 201 to 210 of about 92,765 (246)

Circulating HBsAg/IgM complexes in chronic HBsAg carriers

Annales de l'Institut Pasteur / Virologie, 1983
Summary Sera of young male HBsAg carriers from Senegal were investigated for complexes between IgM and HBsAg. An enzyme-linked immunosorbent assay based on selective absorption of IgM was used. HBsAg/IgM complexes were detected in 14% of the HBsAg carriers.
J.L. Barres, Coursaget P, B. Yvonnet, J.E. Bocande, I. Diop-Mar, Chiron Jp, E. Petat, S. M'Boup   +7 more
openaire   +2 more sources

Calibration of qualitative HBsAg assay results for quantitative HBsAg monitoring

Journal of Clinical Virology, 2014
Evidence is accumulating that quantitative hepatitis B surface antigen monitoring may be useful in managing patients with chronic HBV infection on certain treatment regimens. Based on these results with the Abbott Architect qualitative and quantitative HBsAg assays, it seems feasible to convert qualitative to quantitative HBsAg values for this purpose.
Julian W. Tang, Dena Adachi, Hans Gunning   +2 more
openaire   +3 more sources

HBsAg blood screening and diagnosis: performance evaluation of the ARCHITECT HBsAg qualitative and ARCHITECT HBsAg qualitative confirmatory assays

Diagnostic Microbiology and Infectious Disease, 2011
A low initial reactive rate for screening assays is important for time- and cost-effective infectious disease testing. Therefore, the new ARCHITECT HBsAg Qualitative screening assay, in conjunction with the new ARCHITECT HBsAg Qualitative Confirmatory assay, was introduced.
Christian Beckert, Christian Popp, Loredana Piro, Marina Luciani, Lucinda Queirós, Markus Roebbecke, Carsten Buenning, Doris Krams, Hans-Peter Kapprell   +8 more
openaire   +3 more sources

HBsAg subtype distribution among different populations of HBsAg carriers in Spain

European Journal of Epidemiology, 1995
Data concerning the HBsAg subtype distribution in Spain are out-of-date and confined to a restricted geographical area. Furthermore, the complex distribution observed in the countries surrounding Spain prevents any prediction. To obtain further data on HBsAg subtype distribution among Spanish HBsAg carriers, subtyping analysis (d and y determinants ...
P. León, J M Echevarría, Antonio Tenorio, J. A. López, Juan Emilio Echevarría, C.J. Domingo   +5 more
openaire   +3 more sources

Detection of HBsAg mutants

Journal of Medical Virology, 2006
HBsAg screening is carried out routinely to detect hepatitis B virus (HBV) infection. The immunoassays used employ capture antibodies often having specificity for epitopes present on the antigenic (a) determinant of the HBsAg. Loss of detection may occur due to mutations within and/or outside of the a determinant that affect conformational epitope ...
openaire   +2 more sources

Selection of HBsAg-Specific DNA Aptamers Based on Carboxylated Magnetic Nanoparticles and Their Application in the Rapid and Simple Detection of Hepatitis B Virus Infection.

ACS Applied Materials and Interfaces, 2015
Aptamers are short single-stranded DNA or RNA oligonucleotides and can be selected from synthetic combinatorial libraries in vitro. They have a high binding affinity and specificity for their targets.
Zhijiang Xi, Rongrong Huang, Zhiyang Li, N. He, Ting Wang, E. Su, Yan Deng   +6 more
semanticscholar   +1 more source

Establishment of an HBsAg mixed titer performance panel and HBsAg working standard for quality control of HBsAg diagnostic kits in Korea

Journal of Clinical Virology, 2010
International Standards or commercial panels used for performance validation of diagnostic kits might not reflect the viral characteristics common in Korea. Also, continuous use of these materials is difficult because of limited quantity and high cost.Establishment of HBsAg reference materials to be used as National Standards for validation of HBsAg ...
Jong Sun Park, Youn Jung Cho, Kyoung Young Choi, Sook-Won Ryu, Kyoung Won Yoon, Nam-Sun Cho, So-Yong Kwon, Gun Woo Ha, Ju Hun Lee   +8 more
openaire   +3 more sources

Subspecificity determination of HBsAg by radioimmunoassay

Canadian Journal of Microbiology, 1987
A radioimmunoassay method for subtyping hepatitus B surface antigen (HBsAg) was developed. Polystyrene beads pretreated with glutaraldehyde and coated with monospecific anti-d or anti-y antibodies were used. The treatment of beads with glutaraldehyde significantly increased the sensitivity of the test.
L. Knelsen, R. K. Chaudhary
openaire   +3 more sources

HLA Antigens in HBsAg Infection

Vox Sanguinis, 1979
Abstract. The HLA typing of hemodialysis patients and normal subjects suggests a negative association of B8 and positive association of B5 with the development of anti‐HBs and a negative association of BW35 with HBsAg antigenemia.
S. L. Jindal, C. J. Christie, Dharmendra P.S. Sengar, A. Rashid   +3 more
openaire   +3 more sources

The Development of HBsAg-Positive Hepatitis Despite the Previous Existence of Antibody to HBsAg

The Journal of Immunology, 1976
Summary A dentist developed acute, icteric HBsAg-positive hepatitis despite the prior existence of anti-HBs. Evaluation of this antibody showed it to have a restricted specificity reacting with only one subdeterminant (α1) of the hepatitis B surface antigen. The anti-HBs/α1 coexisted with HBsAg of subtype ayw in the acute phase hepatitis
D E, Koziol, H J, Alter, J P, Kirchner, P V, Holland   +3 more
openaire   +2 more sources