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Avidity of EBV VCA-specific IgG antibodies: distinction between recent primary infection, past infection and reactivation. 1995

J J Gray
Clinical Microbiology and Public Health Laboratory, Addenbrooke's Hospital, Cambridge, UK.

A commercial Epstein-Barr virus (EBV) antivirus capsid antigen (VCA) IgG antibody ELISA and an 'in-house' EBV VCA IgG immunofluorescence antibody assay (IFA) were used to detect EBV VCA IgG antibodies in 100 serum samples collected from organ transplant recipients and immunocompetent individuals. The avidity of EBV VCA IgG antibodies was determined in the IFA and ELISA using the mild reducing agent 8 M urea to remove low avidity antibodies. The samples were collected from patients who had previously been identified with a primary EBV infection, a reactivation of latent infection or evidence of a past EBV infection by means of EBV-specific serology. Using the ELISA, the antibody avidity was low in samples collected from patients with recent EBV infection and high in samples collected from patients with a past infection or a reactivation. There was a statistically significant difference of means (P < 0.001) of percentage reduction in optical density values, measured in the presence of 8 M urea, obtained with samples collected from patients with recent infection compared with samples from patients with a past infection or a reactivation of latent infection.

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D002213 Capsid The outer protein protective shell of a virus, which protects the viral nucleic acid. Capsids are composed of repeating units (capsomers or capsomeres) of CAPSID PROTEINS which when assembled together form either an icosahedral or helical shape. Procapsid,Prohead,Capsids,Procapsids,Proheads
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D004854 Herpesvirus 4, Human The type species of LYMPHOCRYPTOVIRUS, subfamily GAMMAHERPESVIRINAE, infecting B-cells in humans. It is thought to be the causative agent of INFECTIOUS MONONUCLEOSIS and is strongly associated with oral hairy leukoplakia (LEUKOPLAKIA, HAIRY;), BURKITT LYMPHOMA; and other malignancies. Burkitt Herpesvirus,Burkitt Lymphoma Virus,E-B Virus,EBV,Epstein-Barr Virus,Human Herpesvirus 4,Infectious Mononucleosis Virus,Burkitt's Lymphoma Virus,HHV-4,Herpesvirus 4 (gamma), Human,Burkitts Lymphoma Virus,E B Virus,E-B Viruses,Epstein Barr Virus,Herpesvirus, Burkitt,Infectious Mononucleosis Viruses,Lymphoma Virus, Burkitt,Mononucleosis Virus, Infectious,Mononucleosis Viruses, Infectious
D006566 Herpesviridae Infections Virus diseases caused by the HERPESVIRIDAE. Herpesvirus Infections,B Virus Infection,Infections, Herpesviridae,Infections, Herpesvirus,B Virus Infections,Herpesviridae Infection,Herpesvirus Infection,Infection, B Virus,Infection, Herpesviridae,Infection, Herpesvirus,Infections, B Virus
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000914 Antibodies, Viral Immunoglobulins produced in response to VIRAL ANTIGENS. Viral Antibodies
D000915 Antibody Affinity A measure of the binding strength between antibody and a simple hapten or antigen determinant. It depends on the closeness of stereochemical fit between antibody combining sites and antigen determinants, on the size of the area of contact between them, and on the distribution of charged and hydrophobic groups. It includes the concept of "avidity," which refers to the strength of the antigen-antibody bond after formation of reversible complexes. Affinity, Antibody,Antibody Avidity,Avidity, Antibody,Affinities, Antibody,Antibody Affinities,Antibody Avidities,Avidities, Antibody
D014412 Tumor Virus Infections Infections produced by oncogenic viruses. The infections caused by DNA viruses are less numerous but more diverse than those caused by the RNA oncogenic viruses. Fibroma, Shope,Papilloma, Shope,Infections, Tumor Virus,Infection, Tumor Virus,Shope Fibroma,Shope Papilloma,Tumor Virus Infection

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