OLIGONUCLEOTIDE FINGERPRINTING OF ISOLATES OF CANDIDA SPECIES OTHER THAN CANDIDA-ALBICANS AND OF ATYPICAL CANDIDA SPECIES FROM HUMAN IMMUNODEFICIENCY VIRUS-POSITIVE AND AIDS PATIENTS

被引:100
作者
SULLIVAN, D
BENNETT, D
HENMAN, M
HARWOOD, P
FLINT, S
MULCAHY, F
SHANLEY, D
COLEMAN, D
机构
[1] UNIV DUBLIN TRINITY COLL,MOYNE INST,DEPT MICROBIOL,DUBLIN 2,IRELAND
[2] UNIV DUBLIN TRINITY COLL,SCH DENT SERV,DEPT ORAL MED & PATHOL,DUBLIN 2,IRELAND
[3] UNIV DUBLIN,TRINITY COLL,SCH PHAM,DEPT PHARMACOL,DUBLIN 4,IRELAND
[4] UNIV DUBLIN,ST JAMES HOSP,SCH PHYS,DEPT GENITOURINARY MED,DUBLIN 8,IRELAND
关键词
D O I
10.1128/JCM.31.8.2124-2133.1993
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Oligonucleotide fingerprinting of genomic DNA from oral isolates of four different Candida species other than C. albicans and atypical chlamydospore-positive isolates from human immunodeficiency virus (HIV)-positive individuals and AIDS patients was investigated as a means for differentiating between isolates within individual species. Oligonucleotides composed of simple repetitive sequence motifs, including (GACA)4, (GATA)4, (GGAT)4, (GTG)5, and (GT)8, all yielded fingerprints suitable for strain segregation of 8 C. tropicalis isolates, 12 Torulopsis (Candida) glabrata isolates, 8 atypical Candida isolates, and, except for (GATA)4, 2 C. krusei isolates. This technique makes it possible to carry out sequential hybridization of filter-bound DNA with each probe in turn and so generate several distinct DNA fingerprints of the same DNA sample. However, none of the probes yielded fingerprints suitable for strain segregation with three C. parapsilosis isolates. The (GATA), probe was also used to detect restriction fragment length polymorphisms among a genetically closely related group of atypical Candida isolates on primary isolation from an additional HIV-infected patient. These chlamydospore-positive atypical Candida isolates were sucrose positive, were of C. albicans serotype A, hybridized weakly with the C. albicans-specific mid-repeat sequence probe 27A, and yielded fingerprint profiles by random polymorphic DNA analysis that were distinct from those derived from C. albicans isolates. The C stellatoidea ex-type strain NCPF 3108 was indistinguishable from the atypical Candida isolates in all these tests and also yielded an identical carbohydrate and nitrogen source assimilation profile by using the ID 32C yeast identification system.
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页码:2124 / 2133
页数:10
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