home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Overload Trio 2
/
Shareware Overload Trio Volume 2 (Chestnut CD-ROM).ISO
/
dir26
/
med9410p.zip
/
M94A3218.TXT
< prev
next >
Wrap
Text File
|
1994-10-25
|
3KB
|
47 lines
Document 3218
DOCN M94A3218
TI Oral candidiasis in HIV infection--mucosal immunity versus strain
selection.
DT 9412
AU Challacombe SJ; Sweet SP; Dept. of Oral Medicine & Pathology, UMDS,
Guy's Hospital, London,; UK.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):126 (abstract no. PA0124). Unique
Identifier : AIDSLINE ICA10/94369357
AB OBJECTIVE: The aim of this study was to investigate the relative
importance of host secretory immunity versus candidal pathogenicity in
oral HIV-related candidiasis. METHODS: Whole and parotid saliva from HIV
infected, AIDS and control subjects, and Candida sp. isolated from these
groups, were compared. Five factors were analysed: total IgA
concentrations; Candida IgA antibody levels; Candida biotype patterns;
restriction fragment length polymorphism (RFLP) patterns; and adherence
of Candida to buccal epithelial cells (BECs). Total IgA and Candida IgA
antibody levels were determined by ELISA; biotypes with the API 20AUX
system; RFLP analysis with BgIII restriction digests; and adherence with
human BECs (10(5)/ml) and Candida (10(7)/ml) in vitro. RESULTS: Total
IgA, IgA1 and IgA2 concentrations were lower in whole and parotid saliva
in HIV and AIDS subjects compared with controls (P < 0.05), but Candida
IgA, IgA1 and IgA2 antibody levels were higher (P < 0.05). More
non-albicans species and more Candida biotypes were seen in the HIV/AIDS
group. Among the C. albicans isolates, 11 unique genotypes were noted in
the HIV/AIDS group compared with four from control subjects (P < 0.05)
suggesting more genotypic as well as phenotypic variation. Almost all
Candida species isolated from HIV or AIDS subjects adhered to BECs in
higher numbers than control isolates (P < 0.001). DISCUSSION AND
CONCLUSIONS: This study suggests that HIV infected and AIDS subjects
maintain an adequate secretory immune response to Candida, and that the
selection of strains of Candida with altered virulence determinants may
account for the increased prevalence of candidiasis in HIV infection.
DE Antibodies, Fungal/*ANALYSIS AIDS-Related Opportunistic
Infections/IMMUNOLOGY/*MICROBIOLOGY
Candida/*CLASSIFICATION/GENETICS/ISOLATION & PURIF Candida
albicans/CLASSIFICATION/GENETICS/ISOLATION & PURIF Candidiasis,
Oral/IMMUNOLOGY/*MICROBIOLOGY Enzyme-Linked Immunosorbent Assay
Genotype Human HIV Infections/IMMUNOLOGY/MICROBIOLOGY IgA/*ANALYSIS
Mouth Mucosa/IMMUNOLOGY/*MICROBIOLOGY Parotid Gland/SECRETION
Restriction Fragment Length Polymorphisms Saliva/*MICROBIOLOGY MEETING
ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).