BACKGROUND: In Korean traditional medicine, human beings are classified into 4 groups accordance with the characteristics of physical constitution, named; Taeum, Taeyang, Soum, and Soyang. Most of Korean traditional doctors believe that the back ground of pathophysiology is differ among each group in many diseases. HLA is the most polymorphic gene and related with human immune response. It has been used for determination of individual identification, genetic diversity and a study of disease association in different ethnic group. It has well known that the most human inflammatory disease which thought to have some autoimmune basis are in some way promoted by genes of the HLA region. The purpose of this study is to observe the distribution of HLA-DR genotypes in 4 types of physical constitution in Korean traditional medicine. METHODS: Three hundred and ten Korean subjects(Soyang : 58cases, Soum :142cases, Taeum : 92cases, Taeyang : 18cases) were enrolled for this study. Genomic DNAs extracted by phenol/chroloform were amplified with allele specific primers and determined by 2% agarose gel electrophoresis with ethidium bromide staining for analysis of HLA-DR polymorphism. RESULTS: The genotype frequency of HLA-DR in a total or 310 Koreans was DR1 ; 7.2%, DR 2; 10.5%, DR 3;1.7%, DR 4; 19.9%, DR 5; 11.9%, DR 6;19.9%, DR 7; 7.0%, DR 8; 10.6%, DR 9; 8.7%, DR10;1.9%. There was no significant diffrence of HLA-DR genotype distribution among four physical constitution groups classified by Korean traditional medicine. CONCLUSION: Our results suggest that the classification of physical constitution in Korean traditional medicine is not related to HLA-DR genotypes.
Alleles ; Classification ; Constitution and Bylaws* ; DNA ; Electrophoresis, Agar Gel ; Ethidium ; Ethnic Groups ; Genetic Variation ; Genotype ; HLA-DR Antigens* ; Humans ; Medicine, Korean Traditional*

PURPOSE: To investigate the effects of repeated photodynamic therapy (PDT) for subfoveal choroidal neovascularization secondary to age-related macular degeneration (AMD) in Korean patients. METHODS: Clinical data of patients who were treated with repeated (3 times or more) PDT for subfoveal choroidal neovascularization secondary to AMD and followed up for more than 6 months were collected from 17 hospitals around the country. Visual outcomes at 12 and 24 months, follow-up were compared between subtypes of choroidal neovascularization. The factors related to final visual prognosis and PDT-related adverse effects were evaluated. RESULTS: 244 patients (244 eyes) were recruited (male: 60%, age: 67.7+/-9.1 years). The portion of patients with predominantly classic, minimally classic, and occult without classic choroidal neovascularization was 57%, 13%, and 24%, respectively and that of patients with visual improvements or less than moderate visual loss at 24 months follow-up were 28%, 38%, 30% and 47%, 56%, and 65%, respectively. Baseline visual acuity and age were significantly related to the final visual prognosis (p<0.05). PDT-related adverse events developed in 15 (6.1%) patients, but most were mild and transient. CONCLUSIONS: Repeated PDT for subfoveal choroidal neovascularization secondary to AMD has effects comparable to those of previous prospective, controlled trials without any significant safety concerns in Korea.
Choroid* ; Choroidal Neovascularization* ; Follow-Up Studies ; Humans ; Korea ; Macular Degeneration* ; Photochemotherapy* ; Prognosis ; Visual Acuity