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KMID : 1132720090070020107
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Genomics & Informatics
2009 Volume.7 No. 2 p.107 ~ p.110
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Investigation of Genetic Evidence for Sasang Constitution Types in South Korea
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Lee Mi-Kyeong
Jang Eun-Su
Sohn Ho-Young
Park Jeong-Yeon
Koh Byung-Hee
Sung Joo-Hon
Kim Jong-Il
Kim Jong-Yeol
Seo Jeong-Sun
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Abstract
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In Sasang constitutional medicine, both disease susceptibility and drug response are considered to be related to the characteristics of an individual’s physiology and psychology: a theory which is central to traditional Korean medicine. Based on such observable characteristics, Sasang constitutional medicine classifies people into four constitutional types. Genetic studies of Sasang constitution would help reveal the inheritance patterns and models of the typological traits and, moreover, help with traditional medical diagnosis and treatment. To investigate the heritable aspect of Sasang constitution, we collected various pedigrees from South Korea. The study population has 101 pedigrees composed of 593 individuals. The determination of the Sasang constitution type of each individual was performed by doctors who diagnose the Sasang constitutional type of individuals as part of their professional practice. We calculated estimates of familial correlation and heritability. Parent-Offspring pairs showed the strongest familial correlation of Sasang constitutional type, with the correlation values of 0.21 and 0.28, followed by sibling pairs with the value ranging between 0.14 and 0.25. From the heritability analysis conducted with the Variance-Component method, the heritability of TE (Tae-Eum) type, SY (So-Yang) type, and SE (So-Eum) type were 55%, 41%, and 47%, respectively. This pattern of heritability was consistent with different set of analyses, which suggest the robustness of our result. Our result clearly shows that the Sasang constitution type is heritable, and further genetic analysis based on our result will shed light on the biological mechanism of Sasang constitution.
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KEYWORD
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constitutional medicine, familial correlation, heritability
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