Abstract:
:In this review we focus on the impact of genetic admixture on pharmacogenomics in the American continent, where five centuries of intermarriage between Amerindians, European and Africans, resulted in the extensive population heterogeneity observed nowadays. We compare two alternative views of human genomic variation, one stressing populations and the other stressing individuals, and discuss their important and far-reaching consequences to implementation of pharmacogenetics/genomics in practice, especially when dealing with admixed populations. We conclude that a variable mosaic genome paradigm, which envisages the genome of any particular individual as a unique mosaic of variable haplotype blocks--has considerably higher explanation and predictive power for the populations of the Americas. We then move to the more formal pharmacogenomics arena to examine the pharmacogenetic/pharmacogenomic diversity in the Americas and review the challenges and advantages of admixed populations for pharmacogenomic studies. Because interethnic admixture is either common or increasing at a fast pace in many, if not most populations, extrapolation on a global scale of pharmacogenomic data from well-defined ethnic groups is plagued with uncertainty. Intra-ethnic diversity adds complexity to the scientific appraisal, regulatory decisions and, eventually, prescribing of drugs purportedly targeted to a given "race" or ethnicity. Pharmacogenetics/genomics has the potential to benefit people worldwide and to reduce the health disparities between developing and developed nations. This goal is unlikely to be achieved by relinquishing the notion of personalized drug therapy tailored to individual genetic characteristics--the original promise of pharmacogenetics--in favor of a model (pharmacogenomic?) of population-based drug development and prescription, with all its potential pitfalls, especially when extended to admixed populations in developing or developed nations.
journal_name
Curr Drug Targetsjournal_title
Current drug targetsauthors
Suarez-Kurtz G,Pena SDdoi
10.2174/138945006779025392subject
Has Abstractpub_date
2006-12-01 00:00:00pages
1649-58issue
12eissn
1389-4501issn
1873-5592journal_volume
7pub_type
杂志文章,评审abstract::Endogenous opioid peptides have been studied extensively as potential therapeutics for the treatment of pain. The major problems of using natural opioid peptides as drug candidates are their poor receptor specificity, metabolic instability and inability to reach the brain after systemic administration. A lot of synthe...
journal_title:Current drug targets
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doi:10.2174/1389450111314070008
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journal_title:Current drug targets
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journal_title:Current drug targets
pub_type: 杂志文章,评审
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journal_title:Current drug targets
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abstract::Saponins are plant glycosides that consist of a steroid, steroid alkaloid or triterpenoid aglycone and one or more sugar chains that are covalently linked by glycosidic binding to the aglycone. Glucose, galactose, glucuronic acid, xylose and rhamnose are commonly bound monosaccharides. Saponins are found in all organs...
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更新日期:2004-10-01 00:00:00
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