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Query: UMLS:C0021345 (infectious mononucleosis)
 3,358 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The results of clinical and Epstein-Barr virus (EBV) serological studies on nine Chediak-Higashi syndrome (CHS) patients are reported. Persistently elevated antibodies to the viral capsid antigen (VCA) and the restricted component of the early antigen complex (EA-R) developed in six patients who experienced primary EBV infection which either remained silent or were accompanied by clinical signs of infectious mononucleosis (IM). Hepatosplenomegaly and moderate lymphadenopathy, both clinical signs of the accelerated phase, remained detectable in the six patients for a long period of time after seroconversion. The clinical, serological, and histopathological observations are suggestive of a nonmalignant lymphoproliferative disease and consistent with an immunodeficiency to EBV. The abnormal serological responses to EBV in CHS are therefore considered manifestations of a chronic active EBV infection which may result in lethal lymphoproliferation. The three as yet seronegative CHS patients revealed no signs of the accelerated lymphoproliferative phase of the syndrome.
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PMID:Chronic active Epstein-Barr virus infection in patients with Chediak-Higashi syndrome. 301 35

Ataxia telangiectasia (AT) is a primary immunodeficiency syndrome characterized by oculocutaneous telangiectasia, ataxia, recurrent infection and development of malignancies. Epstein-Barr virus (EBV) is a B-cell lymphocytotropic virus which causes infectious mononucleosis and is also highly associated with Burkitt's lymphoma, nasopharyngeal carcinoma and lymphoproliferative disorders in immunodeficient patients. 10 Japanese patients with AT were studied concerning the status of EBV infection by specific EBV serology, and reactivity of peripheral lymphocytes to EBV. All the AT patients had high EBV antibody titers of IgG to viral capsid antigen (VCA) and early antigen (EA), while low titers of IgG to EBV-associated nuclear antigen (EBNA), compared with age and sex matched healthy controls. However, significant differences were not apparent with antibodies to several other viruses between the AT patients and controls. These antibody characteristics were thought to be that an activated EBV infection occurred in AT patients. Then the lymphocytes were exposed to B95-8 strain EBV. There was no significant differences in EBNA induction frequency at 24 hours prior to cellular DNA synthesis, between the AT and controls. EBV-specific T cell killer function was very low as judged with the days of establishment of lymphoblastoid cells expressing EBNA on all cells after EBV exposure, when compared with the lymphocytes from controls. These AT lymphoblastoid cells easily expressed EA and VCA by cultivation at lower temperature of 33 degrees C, 12-0-tetradecanoyl-phorbol-13-acetate treatment, 60Co irradiation and by P3HR-1 strain EBV infection. Malignant transformation with high colony forming efficiency in soft agarose and tumor formation in nude mice easily occurred with some of AT lymphoblastoid cells.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Studies on Epstein-Barr virus (EBV) infection and reactivity of peripheral B lymphocytes to EBV in patients with ataxia telangiectasia]. 301 55

The Epstein-Barr virus (EBV) has been associated with classic infectious mononucleosis, Burkitt's lymphoma, nasopharyngeal carcinoma, and B-cell lymphomas in primary and secondary immunodeficiency disease. The availability of specific serologic diagnosis of EBV, rather than dependence on heterophile antibody positivity, has broadened the scope of EBV-associated diseases. A chronic neuroasthenia syndrome accompanied by antibody titers to the viral capsid antigen and early antigen of EBV, which are higher than found in asymptomatic individuals, is one such additional EBV-associated syndrome. This paper describes the clinical and laboratory responses to EBV that are present in this chronic syndrome. It then discusses management of these patients and the difficulties in establishing a cause-and-effect relationship between EBV and chronic neuroasthenia along with recommendations for future studies.
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PMID:Chronic Epstein-Barr virus infection. 303 34

The diagnosis of EBV-IM or a heterophil-negative mononucleosis-like syndrome is best approached by combining morphologic and serologic data. The minimal hematologic criteria should always be searched for before accepting a case as IM or an IM-like illness. If minimal morphologic data are not rigidly adhered to, the number of heterophil-negative cases included under the umbrella of IM or an IM-like illness will swell and include a variety of other illnesses where early diagnosis may be important for treatment purposes. When EBV studies are indicated, the entire profile (VCA-IgM, VCA-IgG, and anti-EBNA) should be performed. Anti-VCA-IgG titers alone, for example, are of very limited usefulness unless they are negative (less than 1:10), in which case the diagnosis of EBV-IM is excluded. The main problems connected with the diagnosis of the CMS center about the nonspecificity of both clinical and EBV serologic data. Thus, a significant effort must be made to rule out underlying disease, especially those chronic illnesses with immunosuppressive effects that are capable of reactivating the EBV latency state and producing EBV serology similar to that seen in CMS. Other dilemmas relate to diagnostic cut-off levels for particular EBV-related tests, including antibodies to EA and the relative unavailability of several tests for detection of subtle immunodeficiency or T-cell dysfunction in individual patients with suspected CMS. Future efforts will be directed to the diagnostic usefulness of antibody responses to well-defined recombinant fragments of the EBV genome (ie, anti-EBNA1 vs. -EBNA2 titers).
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PMID:Selected aspects of acute and chronic infectious mononucleosis and mononucleosis-like illnesses for the practicing allergist. 331 Jul 48

The authors present data from four patients with acute heterophil-negative mononucleosis-like illnesses who were initially thought to have primary Epstein-Barr virus (EBV) infections but eventually were shown to be seroconverting to the human immunodeficiency virus (HIV). Widespread lymphadenopathy and blood smears indistinguishable from those typically encountered in the acute phase of infectious mononucleosis were present in all cases. There were also varying combinations of fever, sore throat, and malaise, as well as mild abnormalities of hepatic function and elevated cold agglutinins (anti-I). Anti-HIV was detected by both enzyme-linked immunosorbent assay and Western blot techniques in all cases, with increasing titers noted in two of three serially studied cases. In one patient, a dual infection with the hepatitis B virus was also documented. Diagnostic possibilities in patients with acute mononucleosis-like illnesses dominated by prominent lymphadenopathy should include primary seroconversions to HIV.
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PMID:Heterophil-negative mononucleosis-like illnesses with atypical lymphocytosis in patients undergoing seroconversions to the human immunodeficiency virus. 339 57

The acquired immunodeficiency syndrome AIDS is caused by the retrovirus HIV. About 20% develop after the inoculation of the virus an acute clinical picture resembling infectious mononucleosis. Several weeks to months after the infection antibodies can be demonstrated in the serum. Lateron a lymphadenopathy syndrome or AIDS related complex may develop. Most of the patients with LAS or ARC will progress to the full blown picture of AIDS. This is defined as immunodeficiency complicated by Kaposi-sarcoma or central nervous system malignance lymphoma or opportunistic infections. The most common infections are due to certain parasites, c. e. pneumocystis carinii, toxoplasma gondii and cryptosporidia. Fungi, bacteria and viruses can also cause opportunistic infections.
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PMID:[Clinical manifestations of acquired immunologic deficiency syndrome (AIDS)]. 347 26

The antibody response to human immunodeficiency virus (HIV) after primary infection was monitored in eight homosexual men with the acute mononucleosis-like illness associated with seroconversion. Multiple sera from each subject, taken at frequent intervals after onset of acute illness, were tested for antibody to HIV by IgM and IgG immunofluorescent assays (IFAs), four commercial enzyme-linked immunosorbent assays (ELISAs), and Western immunoblot (WB). Antibody to HIV was detected first by IgM IFA (mean +/- SD, 5 +/- 3 days), followed by IgG IFA (11 +/- 3 days); the IgM antibody titer peaked at 24 +/- 17 days and disappeared by 81 +/- 27 days, whereas the IgG antibody titer peaked at 133 +/- 63 days and has not disappeared in any subject. Antibody to HIV was first detected by ELISA from 31 +/- 14 to 58 +/- 32 days, depending on the assay kit used. Antibody to p24 and gp41 was first detected by WB at 24 +/- 10 days, followed by antibody to p55 (40 +/- 20 days), p68 (57 +/- 19 days), and p34 (71 +/- 22 days).
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PMID:Antibody response to human immunodeficiency virus after primary infection. 355 44

Three cases of febrile pharyngitis were recorded retrospectively in a cluster of 5 men and 1 woman linked by sexual contact to a human immunodeficiency virus (HIV) carrier. In all 3 patients, a progression into clinical HIV disease was noted during an observation period of 20-25 months. The febrile pharyngitis developed similarly in each patient after an incubation time of 3-5 weeks. High fever of sudden onset and a sore bright red throat were accompanied by extreme lethargy and, in 2/3 patients, a morbilliform rash. The acute illness lasted 4-7 days and was followed by mild lymphadenopathy. All 3 patients were HIV seropositive 17-19 months later, when they first entered the study. By contrast, those 2 cases who did not fall ill, continued to be seronegative for 19-39 months after the exposure. Seroconversion of HIV could retrospectively be demonstrated in 1 of the 3 patients 2 weeks after the onset of the febrile illness. A simultaneous lack of rise in the EBV and CMV titres suggests HIV as the causative agent for this febrile mononucleosis-like pharyngitis.
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PMID:Febrile pharyngitis as the primary sign of HIV infection in a cluster of cases linked by sexual contact. 356 21

Clinical descriptions of acute or primary infection with the human immunodeficiency virus (HIV) are rare. Among cases previously reported, most describe an acute illness resembling infectious mononucleosis. We describe the case of a 32-year-old homosexual man with an acute illness associated with strong serologic evidence of a primary infection with HIV. This case illustrates two new clinical features: an acute, bilateral brachial neuritis, and a vesicular, pustular exanthematous and enanthematous rash. Studies of HIV-related serologic results show differential sensitivities for enzyme-linked immunosorbent assay, Western blot, immunofluorescence, and viral antigen techniques in the acute phase of HIV infection. There appears to be significant clinical heterogeneity of the acute phase of HIV infection.
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PMID:Acute infection with the human immunodeficiency virus (HIV) associated with acute brachial neuritis and exanthematous rash. 368 79

The lymphocytes from the patients with primary immunodeficiency diseases and those under immunosuppressive conditions such as viral infection or administration of antimetabolites were studied by various parameters of T- and B-lymphocytes. T-lymphocyte specific antigen, spontaneous rosette formation with sheep erythrocytes, phytohaemagglutinin response of the lymphocytes and delayed hypersensivity skin reaction were used to assess T-lymphocytes, while complement receptor, surface immunoglobulin, serum immunoglobulin levels and antibody response to antigens were estimated as parameters of B-lymphocytes. 9 of infantile agammaglobulinemia, 8 severe combined immunodeficiency, 5 ataxia telangiectasia, d Di-George syndrome, 11 common variable immunodeficiency, 3 isolated IgA deficiency and 4 cases thymectomized more than 10 years previously were studied and discussed for the results. The peripheral blood lymphocytes, especially T-lymphocytes were reduced in the acute stage of measles infection, while they were increased in infectious mononucleosis caused by EB (Epstein-Barr) virus. Atypical lymphocytes observed in the later disease seemed to originate from mainly T-lymphocytes. Cyclophosphamide had suppressive effect selectively on B-lymphocytes.
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PMID:T- and B-lymphocytes in immunological disorders. 437 62


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