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Genetic Association Study of $THR{\beta}$Polymorphisms with Obesity in Korean Population
Jung, Kyung-Hee,Ban, Ju-Yeon,Kim, Hak-Jae,Park, Hae-Jung,Uhm, Yoon-Kyung,Kim, Su-Kang,Kim, Bum-Shik,Kim, Youn-Jung,Koh, In-Song,Chung, Joo-Ho The Korean Society of Toxicogenomics and Toxicopro 2008 Molecular & cellular toxicology Vol.4 No.2
The growing problem of obesity is associated with numerous medical conditions. Several studies have reported that activation of thyroid hormone receptor beta $(THR{\beta})$ is involved in lipid metabolism and thermogenesis. To identify the relationship between the $THR{\beta}$ gene and obesity, we genotyped eighty two single nucleotide polymorphisms (SNPs) in the gene using the Affymetrix array chip in 209 overweight/obese and 155 normal subjects in Korean population. Of the eighty two polymorphisms, the seven SNPs exhibited a significant association with overweight/obesity in three alternative models (codominant, dominant, and recessive models; P<0.05 after adjusting for age and sex) were rs826221 (+267878 T>C), rs4858604 (+186399 A>G), rs1158265 (+200152 T>C), rs1868575 (+206031 G>A), rs1700939 (+238467 T>A), rs1505301 (+241933 T>C), and rs1924768 (+126491 T>C). During haplotype analysis using HapAnalyzer software, 2 haplotypes (block 13: TTAT; block 15: CTGC) containing significant polymorphisms (rs1700939 +238467 T>A and rs4858604 +186399 A>G) were detected to be significantly different. The results suggest that the $THR{\beta}$ gene may be associated with overweight/obesity in Korean population.
Jung, Hyunjean,Yang, Pil-Sung,Sung, Jung-Hoon,Jang, Eunsun,Yu, Hee,Kim, Tae-Hoon,Uhm, Jae-Sun,Kim, Jong-Youn,Pak, Hui-Nam,Lee, Moon-Hyoung,Lip, Gregory,Joung, Boyoung Georg Thieme Verlag KG 2019 Thrombosis and Haemostasis Vol.119 No.2
<P> Background There have been no prior nationwide reports on the prevalence of hypertrophic cardiomyopathy (HCM) among patients suffering from atrial fibrillation (AF). It is also unclear how much stroke risk is attributable to HCM compared with other stroke risks in patients with AF. This study assessed the prevalence of HCM among non-valvular AF (NVAF) patients and to assess the magnitude of increase in stroke risk in NVAF patients with HCM, compared with those without HCM.</P><P> Patients and Methods From the Korean National Health Insurance Service database from January 1, 2005 to December 31, 2016, we analysed 979,784 patients with prevalent NVAF aged 18 years or older.</P><P> Results The overall HCM prevalence in NVAF patients was 1.1%. Although HCM in these patients is an absolute indication for oral anticoagulant (OAC) prescription, only 1,622 (15.3%) patients were receiving OAC at the time of AF diagnosis. Among OAC-naïve patients with NVAF, compared with those without HCM, those with HCM had the increased risk of ischaemic stroke/systemic embolism with clinical variable adjusted hazard ratio of 1.55 (95% confidential interval, 1.48-1.63; p < 0.001). Ischaemic stroke/systemic embolism rate of NVAF patients with HCM without any non-gender CHA2DS2-VASc stroke risk factors was 4.02 per 100 person-years, and approached to that of NVAF patients without HCM with CHA2DS2-VASc score of 3 (4.07 per 100 person-years).</P><P> Conclusion Among all NVAF patients, 1.1% of patient has HCM. The risk of stroke in NVAF with HCM without any CHA2DS2-VASc stroke risk factors was similar to that of those patients without HCM with CHA2DS2-VASc score of 3. Despite this, the actual use of OACs among NVAF patients with HCM was sub-optimal, relative to their high stroke risk.</P>
Clinical significance of changes in the corrected QT interval in stress-induced cardiomyopathy
( Jung Hee Lee ),( Jae Sun Uhm ),( Dong Geum Shin ),( Boyoung Joung ),( Hui Nam Pak ),( Young Guk Ko ),( Geu Ru Hong ),( Moon Hyoung Lee ) 대한내과학회 2016 The Korean Journal of Internal Medicine Vol.31 No.3
Background/Aims: Although transient changes in the electrocardiogram (ECG) of patients with stress-induced cardiomyopathy (SCMP) are common, there are little data about ECG changes in patients with SCMP and the clinical implications of these variations. Methods: We investigated a total of 128 patients (age, 63.2 ± 15.4 years; female, 60.9%) diagnosed with SCMP. We compared the ECGs taken after SCMP diagnosis and during the recovery phase to those taken before SCMP diagnosis under baseline conditions. All patients were divided into two groups according to corrected QT (QTc) interval changes: recovered QTc group (QTc in SCMP > QTc in recovery phase, n = 77) and nonrecovered QTc group (QTc in SCMP ≤ QTc in recovery phase, n = 51). Results: In comparison of baseline, SCMP, and recovery phase, we found the mean heart rate (81.5 ± 18.7, 96.8 ± 25.3, and 83.0 ± 19.4/min, respectively; p < 0.001), frequencies of ST segment elevation (0.0%, 8.6%, and 1.6%, p = 0.004), ST segment depression (0.0%, 6.3%, and 1.6%, p = 0.007), T wave inversion (4.4 %, 43.8%, and 61.7%, p < 0.001), and QTc (447.4 ± 35.3, 488.9 ± 67.1, and 468.0 ± 49.5, p < 0.001) showed significant changes. In-hospital mortality (9.1% vs. 25.5%, p = 0.012) and critical care (54.5% vs. 72.5%, p = 0.040) occurred more frequently in the nonrecovered QTc group than in recovered QTc group. Conclusions: The QTc can be prolonged in patients with SCMP. Short-term mortality was increased in patients where the QTc did not recover.