• Title/Summary/Keyword: Disequilibrium

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Lack of Association between Polymorphisms in Genes MTHFR and MDR1 with Risk of Childhood Acute Lymphoblastic Leukemia

  • Kreile, Madara;Rots, Dmitrijs;Piekuse, Linda;Cebura, Elizabete;Grutupa, Marika;Kovalova, Zhanna;Lace, Baiba
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.22
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    • pp.9707-9711
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    • 2014
  • Background: Acute lymphoblastic leukemia (ALL) is a complex disease caused by interactions between hazardous exogenous or/and endogenous agents and many mild effect inherited susceptibility mutations. Some of them are known, but their functional roles still requireinvestigation. Age is a recognized risk factor; children with disease onset after the age of ten have worse prognosis, presumably also triggered by inherited factors. Materials and Methods: The MDR1 gene polymorphisms rs1045642, rs2032582 and MTHFR gene polymorphisms rs1801131 and rs1801133 were genotyped in 68 ALL patients in remission and 102 age and gender matched controls; parental DNA samples were also available for 42 probands. Results: No case control association was found between analyzed polymorphisms and a risk of childhood ALL development. Linkage disequilibrium was not observed in a family-based association study either. Only marginal association was observed between genetic marker rs2032582A and later disease onset (p=0.04). Conclusions: Our data suggest that late age of ALL onset could be triggered by mild effect common alleles.

The Extraction for each Design phase using Environment-Friendly Design Factors by In-depth Evaluation of Experts in social housing (전문가집단 심층평가를 통한 사회주택 건축단계별 친환경적 계획요소 추출에 관한 연구)

  • Choi, Young-Oh;Choi, Moo-Hyuck
    • Journal of the Korean housing association
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    • v.21 no.1
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    • pp.1-9
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    • 2010
  • Housing problems in city have being caused social contradiction that contains social discord and conflict between poor and rich. And they have raised one of social problems including a disequilibrium of demand and supply, a housing trouble, and a poor residential environment. Therefore, the purpose of this study is to suggest to the improvement of social housing that exposes to a poor environment for social integration. For this, this study is to extract environmental-friendly design factors for each building phase by in-depth evaluation of experts, and to analyze the problems of domestic social housing and environment-friendly design factors considered prior literature. The results as follow. It might be considered highly phase of schematic design, The building construction, and performance management having factors. Specially, it analyzed to 'Living Environment', 'Economic Efficiency', and 'renewable Energy Systems' should be considered highly. Ultimately, this study would be reconsidered the improvement of social housing proposed by the Government for the social outcast.

Type 1 diabetes genetic susceptibility markers and their functional implications

  • Park, Yongsoo
    • Journal of Genetic Medicine
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    • v.11 no.1
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    • pp.1-10
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    • 2014
  • Type 1 diabetes (T1D) is a chronic autoimmune disease characterized by selective destruction of pancreatic ${\beta}$-cells resulting in insulin deficiency. The genetic determinants of T1D susceptibility have been linked to several loci, in particular to the human leukocyte antigen (HLA) region, which accounts for 50% of the genetic risk of developing T1D. Multiple genes in the HLA region, which are in strong linkage disequilibrium, are thought to be involved. Another important locus, with a smaller effect on genetic predisposition to T1D, is the insulin gene. The advent of numerous single nucleotide polymorphism markers and genome screening has enabled the identification of dozens of new T1D susceptibility loci. Some of them appear to predispose to T1D independently of the HLA and may be important in families with T1D who lack strong HLA susceptibility. Other loci may interact with each other to cause susceptibility. The autoimmune response against ${\beta}$-cells can also be triggered by environmental factors in the presence of a predisposing genetic background. Deciphering the environmental and genetic factors involved should help to understand the origin of T1D and aid in the design of individualized prevention programs.

Haplotype Distribution of the β2-Adrenergic Receptor Gene in Korean Essential Hypertensives

  • Bae, Joon-Seol;Kang, Byung-Yong;Lee, Kang-Oh;Yoon, Tae-Joong;Kim, Jae-Hyoun;Kim, Ki-Tae
    • Toxicological Research
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    • v.18 no.3
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    • pp.233-240
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    • 2002
  • In view of the effect of $\beta_2$-Adrenergic receptors ($\beta_2$-AR) as a risk factor for essential hypertension, we investigated the Fnu4HI and MnlI RFLPs of $\beta_2$ -AR gene in the Korean patients with essential hypertension and normal controls. There were no significant differences in the allele and genotype of these polymorphisms between normotensive and essential hypertensive subjects. In ethnic comparison, the allele frequencies of these three sites contained Nde I RFLP reported the association with essential hypertension in Korean population previously, were very different from those of other ethnic populations studied. The significant linkage disequilibrium was detected only in hypertensive group between Nde I and Fnu4HI sites. The Fnu4HI RFLP was also significantly associated with plasma triglyceride (TG) level. Therefore, our results suggest that the significant association between Fnu4HI variation in the human $\beta_2$-AR gene and plasma TG level may reflect the potential role of human $\beta_2$-AR gene as one of the genetic components for cardiovascular risk.

Linkage Disequilibrium of Dopamine D2 Receptor Gene in the Korean Population

  • Kang, Byung-Yong;Oh, Sang-Duk;Lee, Kang-Oh
    • Toxicological Research
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    • v.20 no.1
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    • pp.49-53
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    • 2004
  • The genetic basis of hypertension is complex, and has been considered to be associated with the dopamine D2 receptor gene (DD2R). Because association studies using the candidate gene approach may provide important clues regarding the pathogenesis of hypertension and establish basis for further study, we performed the association study on the relationship between genetic polymorphisms in the DD2R gene and hypertension in Koreans. Eighty nine patients with hypertension and 86 age-matched subjects with normal blood pressure were enrolled. Genomic DNA was extracted from peripheral blood leukocytes. PCR-RFLP analysis was performed to detect the three polymorphic Taq I sites in the DD2R gene. There were no significant differences in genotype, allele and haplotype distributions of any polymorphisms in the DD2R gene between two groups, respectively (P>0.05), although significant linkage disequilibriums among these polymorphic sites were detected by pair-wise analysis (P<0.05). Therefore, our negative result suggest that the three Taq I RFLPs in the DD2R gene were not significantly associated with hypertension in Koreans.

Differential diagnosis of peripheral vertigo (말초성 현기증의 감별진단)

  • Bae, Chang Hoon
    • Journal of Yeungnam Medical Science
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    • v.31 no.1
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    • pp.1-8
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    • 2014
  • Dizziness can be classified mainly into 4 types: vertigo, disequilibrium, presyncope, and lightheadedness. Among these types, vertigo is a sensation of movement or motion due to various causes. The main causes of peripheral vertigo are benign paroxysmal positional vertigo (BPPV), acute vestibular neuritis (AVN), and Meniere's disease. BPPV is one of the most common causes of peripheral vertigo. It is characterized by brief episodes of mild to intense vertigo, which are triggered by specific changes in the position of the head. BPPV is diagnosed from the characteristic symptoms and by observing the nystagmus such as in the Dix-Hallpike test. BPPV is treated with several canalith repositioning procedures. AVN is the second most common cause of peripheral vertigo. Its key symptom is the acute onset of sustained rotatory vertigo without hearing loss. It is treated with symptomatic therapy with antihistamines, anticholinergic agents, anti-dopaminergic agents, and gamma-aminobutyric acid-enhancing agents that are used for symptoms of acute vertigo. Meniere's disease is characterized by episodic vertigo, fluctuating hearing loss, and tinnitus. It is traditionally relieved with life-style modification, a low-salt diet, and prescription of diuretics. However, diagnosis and treatment of the peripheral vertigo can be difficult without knowledge of BPPV, AVN, and Meniere's disease. This article provides information on the differential diagnosis of peripheral vertigo in BPPV, AVN, and Meniere's disease.

Study on Genetic Diversity of Six Duck Populations with Microsatellite DNA

  • Wu, Yan;Liu, Xiao-Lin;Hou, Shui-Sheng;Huang, Wei
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.6
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    • pp.776-783
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    • 2008
  • In this study, we investigated the genetic diversity and phylogenetic relationship of six duck populations by employing the genetic polymorphisms of 20 microsatellites. The parameters used in this study included number of alleles, average effective numbers of alleles (E) and average rates of heterozygosity of each population. The results showed that all the microsatellite loci were highly polymorphic except that the locus AJ515896 in Muscovy duck was 0. The average PIC (0.762), average h (0.7843) and average E (5.261) of the six duck populations were all high, indicating that the gene polymorphisms and genetic diversity were high. The test of Hardy-Weinberg equilibrium showed that the six populations in this study were all in Hardy-Weinberg disequilibrium. The F-statistic analysis results showed the range of FST was from 0.0205 (AJ515895) to 0.2558 (AJ515896). The mean FST was 0.0936. Phylogenetic study revealed that Peking duck (Z1 and Z4), Shaoxing duck, Cherry Valley duck and Aobaixing duck were clustered in one group, while the Muscovy duck was clustered in one group alone. The phylogenetic relationships among different populations were in accordance with their breeding history and distribution. Our data suggested that the 20 microsatellite loci were effective markers for analysis of genetic relationships among duck populations.

Oil Prices and Terms of Trade of Saudi Arabia: An Empirical Analysis

  • HAQUE, Mohammad Imdadul;IMRAN, Mohammad
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.9
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    • pp.201-208
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    • 2020
  • Terms of trade is an important indicator of the welfare gains from international trade to the exporting country. Terms of trade of oil-exporting countries are hypothesized to depend primarily on oil prices. The study assesses the relation between oil prices and the terms of trade of Saudi Arabia. The study uses the Autoregressive Distributed Lag method to determine the cointegration between the country's terms of trade and oil prices for the period 2000-2018. The data for net barter terms of trade is taken from World Development Indicators and oil price is taken from Saudi Arabian Monetary Agency. The results show that oil prices and terms of trade are cointegrated and any disequilibrium between the two variables is corrected by 35% in a year. The study also reports a positive relationship between the two items, both in the short run and long run. Diagnostic tests indicate the model to be fit. The results suggest that, for a primarily oil-producing country like Saudi Arabia, the terms of trade depend on oil prices. The study fills the gap in the literature on the study of terms of trade for Saudi Arabia for the last few years, where there has been a high volatility in oil prices.

The Effects of leg length difference on Low Back Pain and joint stiffness (하지길이 차이가 요통과 관절경직에 미치는 영향)

  • Kim Dong-Hyun;Kim Suk-Bum;Baek Su-Jeong;Nam Tae-Ho;Kim Jin-Sang
    • The Journal of Korean Physical Therapy
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    • v.14 no.4
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    • pp.55-63
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    • 2002
  • Human body balances right and left leg centering around pelvis and spine. Therefore, imbalance of lower extremity means disequilibrium of the body. The difference of lower extremity length can cause a number of clinic symptoms including scoliosis, low back pain, sacroiliac pain, and sports injury. In this study, we tried to analyze low back pain and joint stiffness resulting from the difference of lower extremity length. The subjects were 80 male students who are 20-25 years old. The results of this study were as following: 1. Low back pain depending on the difference of lower extremity length One group which the difference of lower extremity length is above 12mm showed average different length as 18.0mm, the other group which one is below 12mm showed as 6.3mm. A group of above 12mm had more severe low back pain than a group of below 12mm. 2. Joint stiffness depending on the difference of lower extremity length A group of above 12mm had more severe joint stiffness than a group of below 12mm.

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Estimations for Unemployment Rate Variations in Business Coincident and Lagging Framework (경기동행과 후행 관계에서 실업률 변동성향의 추정)

  • Kim, Tae-Ho;Jung, Jae-Hwa
    • The Korean Journal of Applied Statistics
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    • v.25 no.1
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    • pp.45-54
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    • 2012
  • Published employment statistics do not provide enough information about the relationship of unemployment and economic and business conditions. This study investigates long-run equilibrium relations and short-run adjustment process of unemployment and discouraged unemployment with major price variables in the business coincident and lagging framework. Speed of adjustment from short-run disequilibrium to long-run equilibrium is found to be relatively faster for discouraged unemployment that appears more responsive to changes in most of explanatory variables. Discouraged unemployment is found to reflect reality and suggested to be a more meaningful statistical index.