Implications of genetics for the epidemiology and control of leprosy

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Abstract

This paper reviews the rationale and history of genetic studies related to leprosy, and considers their implications for the epidemiology and control of the disease. A long tradition of genetic studies in leprosy was initiated by early impressions that the disease clusters within families. Investigations were first motivated by an attempt to understand population patterns, and the focus shifted from investigations of racial differences to investigations of families, of twins and ultimately of genetic markers. The strongest evidence for genetic influence has come from studies of HLA segregation patterns within families, and this has led to elegant in vitro work demonstrating the role of HLA-DR alleles in mediating T-cell reactions in conjunction with antigens of Mycobacterium leprae . The epidemiological implications of this work are not yet clear. The emphasis on family-segregation studies may have given a biased impression because of their requirement for multi-case families. There is evidence that the genetic mechanisms underlying leprosy differ within and between populations. One possible application of the current work would be the use of HLA-DR-specific reactions to identify epitopes of M. leprae which should be excluded from future vaccine preparations.

Publisher

The Royal Society

Subject

Industrial and Manufacturing Engineering,General Agricultural and Biological Sciences,General Business, Management and Accounting,Materials Science (miscellaneous),Business and International Management

Reference36 articles.

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