The Prevalence of Xerostomia and Salivary Gland Hypofunction in a Cohort of HIV-positive and At-risk Women

Abstract

The association of xerostomia and salivary gland hypofunction with HIV infection has been established for men but not for women. We investigated the prevalence of these conditions in a national cohort (n = 733) of HIV-positive and at-risk HIV-negative women. Participants in this prospective cross-sectional study were recruited from the Women's Interagency HIV Study (WIHS) at five outpatient USA clinics. Xerostomia was assessed based on "yes" responses to a dry-mouth questionnaire. Samples of unstimulated whole and chewing-stimulated whole saliva were collected under standardized conditions. The major salivary glands were also evaluated clinically. The prevalence of dry-mouth complaint, the absence of saliva upon palpation, and zero unstimulated whole saliva (flow rate = 0 mL/min) were significantly (p = 0.001) higher in HIV-positive women. Adjusted odds of zero unstimulated whole saliva were significantly (p = 0.02) higher in HIV-positive women vs. HIV-negative women (OR = 2.86; 95% CI, 1.23 to 6.63). Significant (p = 0.03) univariate association was found between zero unstimulated whole saliva and CD4 counts. Adjusted odds of zero unstimulated whole saliva were significantly (p = 0.02) higher for HIV-positive women with CD4 < 200 compared with those with CD4 > 500 (OR = 2.61; 95% CI, 1.17 to 5.85). Chewing-stimulated flow rates were not significantly different between seropositive and seronegative women. The prevalence of xerostomia and salivary gland hypofunction appears to be significantly higher in HIV-positive women relative to a comparable group of at-risk seronegative women. Immunosuppression levels measured by CD4 cell counts are significantly associated with xerostomia and salivary gland hypofunction in a population of HIV-positive women.

Keywords

xerostomia salivary gland hypofunction HIV infection women.

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