NDLI: The HLA genes and their diverse polymorphism

Content Provider	Springer Nature Link
Author	Mehra, N. K.
Copyright Year	2000
Abstract	Advanced DNA level studies based on HLA class II sequence analysis have revealed considerable diversity in HLA among Asian Indians. High resolution typing of specific alleles such as DR2 and DR4 in the HLA class II region by PCR-SSP or SSOP hybridization and their associated DR-DQ haplotypes have helped to detect unique haplotypes and novel alleles which have subsequently been confirmed by sequencing. Incidentally, remarkable stability has been maintained in several other DRB1 alleles viz. DR1, DR7, DR9 and DR10. The ARMS-PCR technology has been found to be particularly useful for typing HLA-A, HLA-B and HLA-Cw alleles. These technologies are far superior over serological methods. Our studies have shown remarkable heterogeneity of common HLA-A and B alleles in Asian Indians. Molecular subtyping of HLA-A2 revealed that subtype A$^{*}$0211 is found only in Indian population and may be the result of selection pressure in this population. Investigations into polymorphism in the HLA-B27 gene revealed that subtypes common both to the western caucasians and orientals occur in the Indian population. It is apparent that the population of the Indian subcontinent, placed as it is between the Caucasoids and Negroids on one hand and Australoids and Mongoloids on the other, provides a rich source of many HLA haplotypes. While the most frequent Caucasian haplotypes occur with a reasonable frequency in Asian Indians, those found predominantly in other ethnic groups (e.g., australian Aborigines and populations of Oceania, China and Japan) are also detected. Knowledge on this is most important for donor selection during organ and bone marrow transplantation and for designing MHC targeted vaccines in specific diseases.
Starting Page	65
Ending Page	77
Page Count	13
File Format	PDF
ISSN	09701915
Journal	Indian Journal of Clinical Biochemistry
Volume Number	15
Issue Number	1
e-ISSN	09740422
Language	English
Publisher	Springer India
Publisher Date	2000-01-01
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biochemistry Microbiology Chemistry/Food Science Pathology
Content Type	Text
Resource Type	Article
Subject	Clinical Biochemistry

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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