[In vitro study of oral Candida albicans in virulence from HIV-positive individuals].
OBJECTIVE
To study the influence of Candida albicans on human immunodeficiency virus (HIV)-positive individuals susceptible to oral candidiasis.


METHODS
In vitro secreted aspartyl proteinase activities, adhesion to healthy buccal epithelial cells of Candida albicans isolates from oral cavities of subjects with and without HIV infection were measured.


RESULTS
The pathogenetic isolates of Candida albicans from HIV-positive patients were significantly lower than that from HIV-negative subjects (P < 0.01) in secreted aspartyl proteinase activities and adhesion to buccal epithelial cells. There was no difference in commensals between these two groups. In the HIV-positive group, no difference was found between the pathogenetics and the commensals. However, in the HIV-negative group, the virulence of the pathogen was significantly higher than the commensals (P < 0.01).


CONCLUSIONS
These results indicate that oral candidiasis was not correlated with some predominant strains of Candida albicans with higher virulence in HIV-positive subjects.
Liu
Xiao-song
XS
Department of Stomatology, Capital Institute of Pediatrics, Beijing 100020, China.
Liu
Hong-wei
HW
Guo
Zi-jie
ZJ
Luan
Wen-min
WM
D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology*; D002176:Candida albicans / Q000472:pathogenicity*; D002180:Candidiasis, Oral / Q000382:microbiology*; D006679:HIV Seropositivity / Q000382:microbiology*; D006801:Humans