Results 251 to 260 of about 132,691 (312)

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 ...
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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, Popp, Doris, Krams, Christian, Beckert, Carsten, Buenning, Lucinda, Queirós, Loredana, Piro, Marina, Luciani, Markus, Roebbecke, Hans-Peter, Kapprell   +8 more
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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
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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Data concerning the HBsAg subtype distribution in Spain are out-of-date and confined to a restricted geographical area.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 ...
J E, Echevarría, P, León, J A, López, A, Tenorio, C J, Domingo, J M, Echevarría   +5 more
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The role of hepatitis B surface antigen quantification in predicting HBsAg loss and HBV relapse after discontinuation of lamivudine treatment

Journal of Hepatology, 2014
Chien-Hung Chen, Sheng-Nan Lu, Chao-Hung Hung   +2 more
exaly   +2 more sources

Hepatitis B Surface Antigen (HBsAg) and Antibody to HBsAg

JAMA, 1977
The prevalence rates of serum hepatitis B surface antigen (HB s Ag) and antibody to HB s Ag (anti-HB s ) were 5.6% and 34% in 144 homosexual men in Seattle. Prevalence rates were only 0.9% and 3.6% in 111 heterosexual male venereal disease clinic patients with nongonococcal urethritis, and also 0.9% and 3.6% in 111 healthy men undergoing routine ...
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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.
D P, Sengar, A, Rashid, S L, Jindal, C J, Christie   +3 more
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Immunogenetics of the response to HBsAg vaccination

Autoimmunity Reviews, 2003
The major envelope protein of the hepatitis B virus (HBV), the HBsAg, constitutes the current preventative vaccine, which represents the first subunit viral vaccine developed. The genetics of the immune response to HBsAg has been extensively studied both in humans and mice. Murine studies begun over 20 years ago indicated that at least two MHC class II
David R, Milich, Geert G, Leroux-Roels
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Improved ELISA for the detection of HBsAg

Journal of Virological Methods, 1985
A sandwich ELISA for hepatitis B virus surface antigen (HBsAg) was developed using monoclonal anti-HBs for the solid phase and horse-radish peroxidase labelled sheep anti-HBs. The sensitivity was approx. 0.3 U/ml HBsAg, in the standard test procedure, comprising two incubation steps of 1 h at 37 degrees C, or in a shortened procedure comprising two ...
G, Wolters, P, Nelissen, L, Kuijpers
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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 ...
So-Yong, Kwon, Nam-Sun, Cho, Youn Jung, Cho, Kyoung Won, Yoon, Kyoung Young, Choi, Jong Sun, Park, Sookwon, Ryu, Ju Hun, Lee, Gun Woo, Ha   +8 more
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