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Ten to forty percent of the patients with acquired immunodeficiency syndrome (AIDS) develop sight- or life-threatening cytomegalovirus (CMV) infections. In some patients with AIDS, CMV is detected in the bronchoalveolar lavage fluid (BALF), urine, and other specimens, even when there are no symptoms of CMV disease. An indicator of active CMV infection is needed to facilitate the diagnosis of CMV disease in patients with AIDS or HIV infection and the evaluation of the efficacy of subsequent treatment. The present study was conducted during the period from 1993 to 1994. The subjects consisted of three patients with AIDS and a confirmed diagnosis of CMV disease (one case of retinitis, one case of gastrointestinal disease and one case of pneumonia), and five HIV-positive patients in whom CMV associated disease was ruled out. Those patients were monitored occasionally for the following parameters of active CMV infection and disease: expression of CMV antigen in the nucleus of polymorphonuclear leukocyte (CMV antigenemia), as it was determined with a monoclonal antibody against a lower matrix protein (p65); infectious CMV detected by shell vial method; CMV DNA detected by PCR; anti-CMV antibody titer; and histological findings. CMV p65 antigen was detected in the leukocytes of both the peripheral blood and BALF during the early phase of CMV disease in three out of three cases of the CMV disease group, and this antigen became negative in two out of two cases who responded to the therapy. All the five patients in the CMV-related-disease-negative group were negative for CMV antigenemia.(ABSTRACT TRUNCATED AT 250 WORDS)

Detection of Cytomegalovirus (CMV) Antigen for Rapid Diagnosis and Monitoring of CMV Diseases in AIDS