Restriction fragment length polymorphism in HLA class II genes of Latin-American Caucasian celiac disease patients.

Abstract:

:In the present study Latin-American celiac disease patients were analyzed for the frequency of certain HLA class II restriction fragment length polymorphisms in order to investigate whether they exhibited the normal associated alleles or showed unusual class II variants. A DPB/RsaI 4.0-kb fragment that was shown to be significantly increased among North Americans celiac disease patients of the DR3,DQw2 haplotype was found with similar frequency in Latin-American control and celiac disease individuals. A DPA/BglII 3.7-kb fragment previously shown to be increased among British celiac disease patients was also present with similar frequency among Latin-American control and celiac disease individuals. These results show that the frequency of the HLA-DP region-derived restriction fragment length polymorphisms linked to celiac disease differs between Caucasian populations of different ethnic backgrounds (Anglo-Saxon and Latin-American). On the other hand, DNA samples from 13 patients and 14 controls bearing the DR5/DR7 phenotype (which is significantly associated with celiac disease in Latin populations) were investigated for the presence of particular restriction fragment length polymorphisms disproportionally present in celiac disease individuals. No significant differences were found between controls and patients when the DNA was analyzed with 10 different restriction enzymes and probes for DRB, DQA, DQB, and DPB HLA class II sequences.

journal_name

Hum Immunol

journal_title

Human immunology

authors

Herrera M,Chertkoff L,Palavecino E,Mota A,Guala MC,Fainboim L,Satz ML

doi

10.1016/0198-8859(89)90005-0

subject

Has Abstract

pub_date

1989-12-01 00:00:00

pages

272-80

issue

4

eissn

0198-8859

issn

1879-1166

pii

0198-8859(89)90005-0

journal_volume

26

pub_type

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