title: Cytomegalovirus glycoprotein B groups in human immunodeficiency virus-infected patients with incident retinitis.
abstract: Cytomegalovirus (CMV) strains may be categorized into 4 different groups on the basis of glycoprotein B (gB) genotype. gB genotypes in CMV polymerase chain reaction (PCR)-positive samples from case patients who were diagnosed with retinitis during prospective follow-up were compared with genotypes in CMV PCR-positive samples from an equal number of retinitis-free matched control subjects. All patients were infected with human immunodeficiency virus (HIV) and CMV. Control subjects and their plasma samples were matched with case patients according to baseline CD4(+) T cell count, transfusion history, HIV risk factor, and follow-up time. CMV DNA was genotyped by restriction-enzyme digestion. Eighteen patients met our case definition. Approximately one-third of patients had gB genotype 1, and half had gB genotype 2. These rates were similar among case patients and control subjects and were similar by risk group. The CMV gB2 genotype is not a major determinant of retinitis pathogenicity but appears to be highly prevalent among HIV-infected patients.
authors.affiliation: Mount Zion Medical Center, University of California, San Francisco, CA 94115, USA. lawrence.drew@clinlab.ucsfmedctr.org
authors.forename: W Lawrence
authors.initials: WL
authors.lastname: Drew
authors.forename: Sunwen
authors.initials: S
authors.lastname: Chou
authors.forename: Richard C
authors.initials: RC
authors.lastname: Miner
authors.forename: Beth A
authors.initials: BA
authors.lastname: Mohr
authors.forename: Michael P
authors.initials: MP
authors.lastname: Busch
authors.forename: Charles M
authors.initials: CM
authors.lastname: van der Horst
authors.forename: David M
authors.initials: DM
authors.lastname: Asmuth
authors.forename: Leslie A
authors.initials: LA
authors.lastname: Kalish
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000150:complications* / Q000821:virology; D000163:Acquired Immunodeficiency Syndrome / Q000150:complications*; D000328:Adult; D003587:Cytomegalovirus / Q000235:genetics / Q000302:isolation & purification*; D017726:Cytomegalovirus Retinitis / Q000150:complications* / Q000235:genetics; D005838:Genotype; D015658:HIV Infections / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D014759:Viral Envelope Proteins / Q000235:genetics*
chemical_list: D014759:Viral Envelope Proteins; C040495:glycoprotein B, Simplexvirus