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At least 1,153 records · Page 64Linked to original sources
PubMed1976

Antibody-dependent cellular cytotoxicity (ADCC) against Epstein-Barr virus-determined membrane antigens. I. Reactivity in sera from normal persons and from patients with acute infectious mononucleosis.

The capacity of antibodies, directed against EBV-determined membrane antigens (MA), to induce antibody-dependent cellular cytotoxicity (ADCC) against EBV superinfected lymphoid cell lines was investigated. Such reactive antibodies were found, at high dilutions, in sera from normal EBV-positive persons but not in sera from EBV-negative persons. Sera from patients with acute infectious mononucleosis (IM), which develop EBV-specific killer T cells, did not induce ADCC. The difference in specificity between ADCC and EBV-specific killer T cells is briefly discussed.

Antibodies, Viral↗
PubMed2003

Validation of the Health-Related Productivity Questionnaire Diary (HRPQ-D) on a sample of patients with infectious mononucleosis: results from a phase 1 multicenter clinical trial.

The objective of this work was to assess the performance of the newly developed Health-Related Productivity Questionniare-Diary (HRPQ-D). Patients completed the HRPQ-D daily for 1-week periods during weeks 1, 2, 4, and 8 of a clinical trial for infectious mononucleosis. Productivity data were collected on a daily basis in terms of absenteeism, presenteeism, and combined lost productivity for three work venues (work outside home, housework, and classes/homework). These were then correlated with patient symptom scores. Symptom scores were positively correlated with lost work hours because of absenteeism and combined lost productivity scores. However, negative correlations were observed between symptom scores and the lost work hours due to presenteeism. The HRPQ-D demonstrated good construct validity, making it a useful tool for determining productivity levels across different work venues within clinical trial or survey research applications.

Absenteeism↗
PubMed1997

Decreased expression of 20-kD homologous restriction factor (HRF20, CD59) on T lymphocytes in Epstein-Barr virus (EBV)-induced infectious mononucleosis.

HRF20 (CD59) is one of the membrane-associated complement regulatory proteins. The characteristic function of CD59 is to prevent membrane attack complex (MAC) formation on the cell surface and to protect the cell from complement-mediated cell lysis. We examined the expression of CD59 antigen on T cell subpopulations in patients with acute infectious mononucleosis (IM) and analysed the relationship between the amount of CD59 expression and activation-induced cell death of mature T cells with apoptosis. Decreased expression of CD59 on CD8+ T cells, especially on CD45RO+ and HLA-DR+ activated T cells, was marked in acute IM patients. In contrast, activated CD4+ T cells from IM patients expressed as much CD59 antigen as CD4+ T cells from healthy volunteers. After incubation-induced cell death, viable CD8+ T cells showed normal amounts of CD59 antigen on their surface. CD59dim CD8+ T cells were more susceptible to apoptosis than CD59bright CD8+ T cells. These findings suggest that decreased expression of CD59 on CD8+ T cells may discriminate the susceptibility of activated CD8+ T cells to activation-induced cell death in IM.

Acute Disease↗
PubMed1988

Inosiplex enhances the growth of Epstein-Barr nuclear antigen-positive B-cells from patients with rheumatoid arthritis and infectious mononucleosis.

The in vitro effects of inosiplex (INO) on proliferation of Epstein-Barr virus (EBV)-carrying B-cells were evaluated. As measured by 3H-thymidine uptake, INO significantly augmented the proliferation of long-term cultured Epstein-Barr nuclear antigen (EBNA)-positive B-cells which were obtained from patients with rheumatoid arthritis (RA) and infectious mononucleosis (IM). In co-culture experiments, INO and anti-immunoglobulin M antibodies coupled to sepharose (anti-mu) had additive effects on proliferation of EBNA-positive B-cells. We conclude that its direct effects on B-cell function should be considered when INO is used for the treatment of diseases characterized by B-cell hyperreactivity.

Adolescent↗
PubMedDate not supplied

Presence of anti-albumin antibodies in viral hepatitis, infectious mononucleosis and several forms of cancer.

Anti-albumin antibodies previously described by different authors in viral hepatitis were also investigated in patients with other diseases. Significant titers of such antibodies could be detected -- by passive hemagglutination reactions using a system of bovine serum albumin-coated sheep red blood cells and human sera -- not only in viral hepatitis, but also in infectious mononucleosis cases and in patients with different forms of cancer. Onto-phylogenetic considerations on the significance of these antibodies for different stages of the process of cell de-differentiation or for disorders of intercellular contacts under the action of some viral agents are discussed.

Antibodies↗
PubMedDate not supplied

[False-membrane pharyngitis and vélopalatine paralysis: false diphteria, true infectious mononucleosis (author's transl)].

Paralysis of the soft-palate occurring at the end of, or in conjunction with false-membrane pharyngitis with lymphadenopathies should prompt to think of diphteria. The reported case is concerning an 18 year-old girl in whom the affection of the last cranial nerves (IX-XI and XII) is falling within the rare but deceptive neurological forms of infectious mononucleosis. The evolution was favorable, as is normally the case when there are no respiratory complications.

Adolescent↗
PubMed1989

The Epstein-Barr virus:host balance in acute infectious mononucleosis patients receiving acyclovir anti-viral therapy.

This report describes the first of 2 investigations studying mechanisms of Epstein-Barr virus (EBV) persistence in the infected host; specifically, we wish to determine the extent to which virus carriage within the B-cell system is dependent upon continued replication of the virus in permissive oropharyngeal epithelium. Levels of EBV infection at these 2 sites have been monitored in 21 acute infectious mononucleosis (IM) patients before, during and after treatment with high doses of acyclovir (ACV). Twelve patients received oral ACV for 10 days and 9 patients received i.v. ACV for 5 days before the 10-day oral course; all were followed prospectively for 28 days. Infectious EBV, detectable at high initial levels in the patients' throat washings, disappeared almost completely during ACV treatment, then returned again to high levels post treatment. In contrast, levels of virus-infected B cells in the blood showed no reduction linked to the period of ACV treatment nor any increase with resumption of EBV shedding. During IM, therefore, maintenance of high levels of virus carriage within the B-cell pool is not dependent upon the continual recruitment of newly infected B cells. This might reflect an inability of the immune T-cell response in acute IM patients to prevent continued expansion of the existing EBV-infected B-cell pool. Alternatively, it raises the possibility that EBV carriage in B cells in vivo is maintained through a virus:cell interaction which is not sensitive to virus-specific T-cell surveillance.

Acyclovir↗
PubMed1986

Reactions of sera from patients with rheumatoid arthritis, systemic lupus erythematosus and infectious mononucleosis to Epstein-Barr virus-induced polypeptides.

P3HR-1 and Ramos cells induced with sodium butyrate and 12-O-tetradecanoylphorbol 13-acetate were used in the protein immunoblot technique to identify Epstein-Barr virus (EBV)-specific antibodies present in sera from clinically normal individuals and patients with systemic lupus erythematosus (SLE), rheumatoid arthritis (RA) and infectious mononucleosis (IM). Sixteen EBV-specific polypeptides were detected ranging in mol. wt. from 22,000 (22K) to 140K. Many of the sera contained antibodies to different subsets of these antigens, and a high proportion expressed autoantibodies which reacted with cellular components from an EBV genome-negative cell line. About 50% of the sera from each category reacted with the 44K to 48K and 36K and 38K early antigen (EA) components. A high proportion of the SLE sera (64%) were found to contain anti-EA antibodies, suggesting an association between EBV and SLE. Almost all of the EBV-seropositive sera examined contained antibodies against a 22K late antigen, but none of the sera from IM patients reacted with this polypeptide.

Antibodies, Viral↗