Affiliation:
1. School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat, Thailand
2. Research Excellence Center for Innovation and Health Product (RECIHP), School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
3. Department of Pharmacology & Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky, United States
4. Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong, Bangladesh
Abstract
Background
Alzheimer’s disease (AD) is one of the multifaceted neurodegenerative diseases influenced by many genetic and epigenetic factors. Genetic factors are merely not responsible for developing AD in the whole population. The studies of genetic variants can provide significant insights into the molecular basis of Alzheimer’s disease. Our research aimed to show how genetic variants interact with environmental influences in different parts of the world.
Methodology
We searched PubMed and Google Scholar for articles exploring the relationship between genetic variations and global regions such as America, Europe, and Asia. We aimed to identify common genetic variations susceptible to AD and have no significant heterogeneity. To achieve this, we analyzed 35 single-nucleotide polymorphisms (SNPs) from 17 genes (ABCA7, APOE, BIN1, CD2AP, CD33, CLU, CR1, EPHA1, TOMM40, MS4A6A, ARID5B, SORL1, APOC1, MTHFD1L, BDNF, TFAM, and PICALM) from different regions based on previous genomic studies of AD. It has been reported that rs3865444, CD33, is the most common polymorphism in the American and European populations. From TOMM40 and APOE rs2075650, rs429358, and rs6656401, CR1 is the common investigational polymorphism in the Asian population.
Conclusion
The results of all the research conducted on AD have consistently shown a correlation between genetic variations and the incidence of AD in the populations of each region. This review is expected to be of immense value in future genetic research and precision medicine on AD, as it provides a comprehensive understanding of the genetic factors contributing to the development of this debilitating disease.
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