• 한국환경성돌연변이발암원학회지
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• 제22권2호
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• pp.70-75
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• 2002

Gly460Trp polymorphism of a-adducin gene has been reported to be associated with hypertension in some populations, and we, therefore, attempted to replicate this finding in Korean population. There were no significant differences in allele and genotype frequencies of Gly460Trp polymorphism in Korean normotensives and hypertensives, respectively. The meta-analysis revealed that the Mantel-Haenszel estimate of the odds ratio across the studies was 1.17 (95%CI 1.04-1.31), and that there was significant evidence against homogeneity of the odds ratio among the studies included (Breslow-Day test = 27.34, df = 9, p = 0.001). Although the meta- analysis appeared in favour of association between the Gly4601tf polymorphism of $\alpha$-adducin gene and hypertension, there was the considerable heterogeneity among the studies and the evidence is also rather borderline. Further comprehensive approaches are needed to resolve this debatable issue.

• 지질동맥경화학회지
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• 제7권2호
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• pp.98-109
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• 2018

Objective: To examine the effects of sodium intake on the correlations between the saltsensitive gene ${\alpha}$-adducin 1 (ADD1) and inflammatory cytokines in Korean childhood obesity. Methods: A total of 2,070 students aged 8-9 years old participated in this study. The anthropometrics, serum biochemistry profile, inflammatory cytokines, and three-day dietary assessment were analyzed according to sex, obesity degree, and ADD1 polymorphism. Results: The obesity prevalence was higher in boys (15.6%) than in girls (11.9%). Boys also showed higher values in anthropometrics; lipid, glucose, and insulin profiles; total calorie intakes, as well as those of sodium and calcium compared with those of the girls. The more obese were boys and girls, the higher were the anthropometrics and the blood levels (total cholesterol, triglyceride, low-density lipoprotein cholesterol, fasting blood sugar, and insulin), but the lower was high-density lipoprotein cholesterol. The obese boys had significantly higher sodium and Na/K intakes, while the obese girls had higher visfatin level and Na/K intake. In addition, an increase in the risk factors for blood pressure and obesity in ADD1 variants was identified. Serum tumor necrosis $factor-{\alpha}$($TNF-{\alpha}$) significantly increased with increasing sodium intake in the ADD1 W allele carriers, regardless of sex. The presence of obesity with the ADD1 W allele induced inflammatory accelerators such as $TNF-{\alpha}$ or C-reactive protein(CRP) with higher sodium intake. Conclusion: Obese children with an ADD1w allele can experience a more complex form of obesity than non-obese when exposed to an obesity-inducing environment and need to be controlled sodium intake in the diet.

• 한국식품영양과학회지
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• 제35권10호
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• pp.1371-1377
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• 2006

본 연구에서는 60대 이상 한국 여성 노인을 대상으로 하여 체내 나트륨 대사에 밀접하게 관여하는 ADD1 Gly460Trp, AGT Met235Thr, ACE Ins/Del 유전자형의 분포를 살피고 각각의 유전자 다형성 혹은 유전자형의 조합과 수축기 및 이완기 혈압과의 관계, 그리고 식이 나트륨 섭취 수준이 유전자-혈압과의 관계에 미치는 영향에 대해 파악하고자 수행 되었으며 그 결과를 요약하면 다음과 같다. 본 연구에서 분석된 유전자형들의 분포는 1) ADD1 유전자-Gly/Gly:Gly/Trp:Trp/Trp=16.5:49.5:34.0, 2) AGT 유전자-Met/Met:Met/Thr:Thr/Thr=4.6:31.2:64.2, 3) ACE 유전자-Ins/Ins:Ins/Del:Del/Del=34:49.5:16.5이었다. AAD1 Gly460Trp, AGT Met235Thr, ACE Ins/Del 각각의 유전자형은 본 연구대상자들의 수축기 및 이완기 혈압을 유의하게 변화시키지 않았으나, ACE Del/Del형과 ADD1 Trp/Trp형을 동시에 보유하고 있는 경우 다른 유전자형을 가진 대상자들에 비해 수축기 혈압이 유의적으로 높았으며(p=0.01), ACE Del/Del형과 AGT Met allele을 동시 에 보유하고 있는 경우 다른 그룹들에 비해 높은 이완기 혈압을 가지고 있는 것으로 나타났다(p<0.001).식이 나트륨 섭취량의 상대적인 수준에 따라 전체 대상자를 두 그룹으로 나누었을 때, 나트륨 섭취량이 낮은 그룹에서만 ADD1 Gly460Trp유전자형에 따른 평균 수축기 혈압의 차이가 관찰되었고(p=0.03), 나트륨 섭취량이 높은 그룹에서는 ADD1유전자형별 평균 수축기 및 이완기 혈압에 유의적인 차이가 없었다. 이상의 결과는 한국 여성 노인에 있어 혈압의 증가에 ADD1, AGT 및 ACE유전자 다형성이 복합적으로 관여함을 제시한다. 또한, 이들 유전자 다형성에 대한 혈압의 표현형이 식이 나트륨 섭취 수준에 따라 변화함을 규명하였다. 이러한 결과로 볼 때, 앞으로 유전자-질병간의 연관성을 밝히기 위한 연구들에서 단일 유전자보다는 다양한 유전자들에 대한 분석이 복합적으로 이루어져야 하며, 식이 요인 등 주요 환경 요인에 대한 분석이 반드시 함께 수행되어야 할 것으로 생각된다.

• Journal of Preventive Medicine and Public Health
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• 제39권2호
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• pp.177-183
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• 2006

Objectives : In this study we examined the association between the genetic markers ACE (A-240T, C-93T, I/D, A2350G), AGT (M235T), AT1R (A1166C), CYP11B2 (T344C, V386A), REN (G2646A), ADRB2 (G46A, C79G, T47C, T1641), GNB3 (C825T) and ADD1 (G460W) and the presence of essential hypertension in adolescents. Methods : The Kangwha Study is an 18-year prospective study that is aimed at elucidating the determinants of the blood pressure level from childhood to early adulthood. For this study, we constructed a case-control dataset of size of 277 and 40 family trios data from the Kangwha Study. For this purpose, we perform a single locus-based case-control association study and a single locus-based TDT (transmission/disequilibrium test) study. Results : In the case-control study, the single locus-based association study indicated that the ADD1 (G460W) (p=0.0403), AGT (M235T) (p=0.0002), and REN (G2646A) (p=0.0101) markers were significantly associated with the risk of hypertension. These results were not confirmed on the TDT study. This study showed that genetic polymorphisms of the ADD1, AGT and REN genes might be related to the hypertension in Korean adolescents. Conclusions : This study provided useful information on genetics markers related to blood pressure. Further study will be needed to confirm the effect of the alpha adducin gene, the angiotensinogen gene and the renin gene on essential hypertension.

• Journal of Periodontal and Implant Science
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• 제36권3호
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• pp.613-625
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• 2006

Periodontal ligament(PDL) cells and human gingival fibroblasts(HGFs) play important roles in development, regeneration, normal function, and pathologic alteration. PDL cells and HGFs have the similarity related with general characteristics of fibroblast such as spindle shaped morphology, the presence of vimentin intermediate filament and the synthesis of interstitial collagens and fibronectin. There were many studies about the differences between PDL cells and HGFs, but they were not about whole gene level. In this study, we tried to explain the differences of gene expression profiles between PDL cells and HGFs, and the differences among three individuals by screening gene expression patterns of PDL cells and HGFs, using cDNA microarray. Although there were some variants among three experiments, a set of genes were consistentely and differentially expressed in one cell type. Among 3,063 genes, 49 genes were more highly expressed in PDL cells and 12 genes were more highly expressed in HGFs. The genes related with cell structure and motility were expressed more highly in PDL cells. These are cofilin 1, proteoglycan 1 secretory granule, collagen type I(${\alpha}$ 1), adducin gamma subunit, collagen type III(${\alpha}$ 1), fibronectin, lumican(keratan sulfate proteoglycan), and ${\alpha}$ -smooth muscle actin. Tissue inhibitor of metalloproteinase known as the enzyme controlling extracellular matrix with matrix metalloproteinase is more highly expressed in PDL cells, osteoprotegerin known as osteoclastogenesis inhibitory factor is more highly expressed in HGFs. We performed northern blot to verify cDNA microarray results on selected genes such as tissue inhibitor of metalloproteinase, fibronectin, osteoprogeterin. The result of northern blot analysis showed that each cell expressed the genes in similar pattern with cDNA microarray result. This result indicates that cDNA microarray is a reliable method in screening of gene expression profiles.

• Journal of Nutrition and Health
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• 제50권3호
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• pp.217-224
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• 2017

Purpose: Although it is well known thatmortality and morbidity due to cardiovascular diseases are higher in salt-sensitive subjects than in salt-resistant subjects, their underlying mechanisms related to obesity remain unclear. Here, we focused on salt-sensitive gene variants unrelated to monogenic obesity that interacted with sodium intake in humans. Methods: This review was written based on the modified $3^rd$ step of Khans' systematic review. Instead of the literature, subject genes were based on candidate genes screened from our preliminary Genome-Wide Association Study (GWAS). Finally, literature related to five genes strongly associated with salt sensitivity were analyzed to elucidate the mechanism of obesity. Results: Salt sensitivity is a measure of how blood pressure responds to salt intake, and people are either salt-sensitive or salt-resistant. Otherwise, dietary sodium restriction may not be beneficial for everyone since salt sensitivity may be associated with inherited susceptibility. According to our previous GWAS studies, 10 candidate genes and 11 single nucleotide polymorphisms (SNPs) associated with salt sensitivity were suggested, including angiotensin converting enzyme (ACE), ${\alpha}$-adducin1 (ADD1), angiotensinogen (AGT), cytochrome P450 family 11-subfamily ${\beta}$-2 ($CYP11{\beta}$-2), epithelial sodium channel (ENaC), G-protein b3 subunit (GNB3), G protein-coupled receptor kinases type 4 (GRK4 A142V, GRK4 A486V), $11{\beta}$-hydroxysteroid dehydrogenase type-2 (HSD $11{\beta}$-2), neural precursor cell-expressed developmentally down regulated 4 like (NEDD4L),and solute carrier family 12(sodium/chloride transporters)-member 3 (SLC 12A3). We found that polymorphisms of salt-sensitive genes such as ACE, $CYP11{\beta}$-2, GRK4, SLC12A3, and GNB3 may be positively associated with human obesity. Conclusion: Despite gender, ethnic, and age differences in genetics studies, hypertensive obese children and adults who are carriers of specific salt-sensitive genes are recommended to reduce their sodium intake. We believe that our findings can contribute to the prevention of early-onset of chronic diseases in obese children by facilitating personalized diet-management of obesity from childhood to adulthood.