• 제목, 요약, 키워드: apolipoprotein

검색결과 211건 처리시간 0.051초

Study on Relationship between Iris Constitution and Apolipoprotein E Gene Polymorphism

  • Kang, Sung-Do;Hwang, Woo-Jun;Kim, Kyung-A;Kim, Kyung-Sik;Lee, Ho-Sub;Kim, Jong-Uk;Choi, Sung-Yong;Jin, Kyong-Son
    • 대한한의학회지
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    • v.24 no.4
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    • pp.25-33
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    • 2003
  • lridology, a form of complementary and alternative medicine (CAM), is the diagnosis of medical conditions through noting irregularities of the pigmentation in the iris. lridological constitution has a strong familial aggregation and is implicated in heredity. Apolipoprotein E (apoE) gene polymorphism is one of the most well studied genetic markers of vascular disease. I investigated the relationship between iridological constitution and apoE polymorphism. I classified 87 hypertensive patients with family history of cerebral infarction and 79 controls according to iris constitution, and determined apoE genotype. Neurogenic type in hypertensives was 32.2% compared with 16.5% in controls (P<0.001). No differences in the apoE genotypes frequencies were observed in patients compared with those in controls ($x^2=0.726$, df-=2, P=0.696). However, in a population with ${\varepsilon}3/{\varepsilon}4$ genotype, the frequency of neurogenic constitution was significantly higher in hypertensives than in controls (60% vs. 0%) ($x^2=5.265$, df=l, P=0.022). These results could imply that apoE ${\varepsilon}3/{\varepsilon}4$ genotype and neurogenic iris constitution are risk factors for hypertension.

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Study on Individual and Combined Relationship of Angiotensin Converting Enzyme, Apolipoprotein E and Angiotensinogen Genes Polymorphism in Patients with Ischemic Cerebrovascular Disease

  • Heo, Yun;Yun, Jong-Min;Cha, Yong-Seok;Lee, In;Cho, Kwang-Ho;Moon, Byung-Soon
    • 대한한의학회지
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    • v.24 no.4
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    • pp.102-112
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    • 2003
  • The homozygous deletion allele of the angiotensin converting enzyme gene (ACF/DD), homozygous threonine allele of the angiotensinogen gene (AGN/TT), and the 4 allele of the apolipoprotein E gene (apoE/4) are reported to be associated with ischemic heart disease. Ischemic cerebrovascular disease (ICVD) is another atherosclerotic disease, and the effects of these polymorphisms on ICVD have been confusing. In this study, I investigated whether ACF/DD, AGN/TT, and apoE/4 genotypes are associated with ICVD and whether genetic risk is enhanced by the effect of one upon another. I ascertained these genotypes in patients with ICVD (n=121) diagnosed by brain computed tomography. Control subjects for the ICVD were randomly selected from subjects matched for age, gender, and history of hypertension with patients. Frequency of ACF/DD genotype was somewhat higher in the patients with ICVD than in the controls (18% vs. 15%). Incidence of ICVD was higher in subjects with the apoE/4/4 genotype than in the other genotypes (50% vs. 27-29%). Incidence of ICVD was much higher in subjects with the AGN/TT genotype than in AGN/MM genotype (36% vs. 17%). Furthermore, the AGN/TT genotype greatly increased the relative risk for ICVD in the subjects with ACF/DD genotype (80.0% vs. 20.0%, P=0.089). Finally, incidence of ICVD was much higher in the subjects with both apoE/2/4 and AGN/TT genotype than in the other genotypes (83.3% vs. 16.7%, P=O.095). These results suggest that AGN/TT enhances the risk for ICVD associated with ACF/DD and apoE/2/4.

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12주간 라인댄스가 노인여성의 치매 및 노화관련인자에 미치는 영향 (The Effects of 12week Line Dance on dementia and Aging-related factors in Elderly Women)

  • 김지원;순아름;김찬회
    • 한국융합학회논문지
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    • v.10 no.6
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    • pp.243-249
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    • 2019
  • 본 연구는 60-70대 노인여성을 대상으로 하였으며 12주간 주 3회, 매회 60분 라인댄스가 치매 및 노화관련호르몬에 미치는 변화를 알아본 결과 결론은 다음과 같다. 12주간 라인댄스 프로그램 실시 후 BDNF, DHEA-s, 에스트로겐은 라인댄스 그룹에서 증가하였으나 통제그룹과 통계적으로 유의미한 차이가 나타나지 않았다. 또한 12주간 라인댄스 프로그램 실시 후 Apolipoprotein B는 라인댄스 그룹에서는 감소하였으나 통제그룹과 통계적으로 유의미한 차이가 나타나지 않았다. 본 연구의 결과에서 그룹과 유의미한 차이는 확인 할 수는 없었지만, 라인댄스 프로그램 적용 그룹에서 치매 예방 및 노화를 지연시키는데 긍정적인 효과를 확인하였으며, 앞으로 라인댄스의 뚜렷한 효과를 확인하기 위해서는 새로운 연구대상과 높은 운동강도, 빈도, 시간 및 운동 장르를 고려한 후속 연구가 필요하다고 사료된다.

노년기 우울증에서 혈관성 위험인자와 아포지단백 E4의 상호작용 (Interactions of Vascular Risk Factors and Apolipoprotein E4 on Geriatric Depression)

  • 박혜영;김재민;신일선;양수진;김성완;김선영;신희영;윤진상
    • 생물정신의학
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    • v.13 no.2
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    • pp.103-109
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    • 2006
  • Objective : Associations of vascular risk/disease or apolipoprotein E ${\varepsilon}4$(APOE4) with geriatric depression has been unclear at a population level. This study aimed to evaluate whether there would be interactions of vascular risk/disease and APOE4 on depression in a Korean elderly population. Methods : 732 community residents aged 65 or over were assessed for depression(GMS), information on vascular risk/disease(reported stroke, transient ishemic attack, heart disease, hypertension, diabetes, smoking), examinations for vascular risk/disease(blood pressure, blood tests for glucose and lipid profiles, body size), APOE genotypes, demographic characteristics(age, gender, education), physical health, and cognitive function(MMSE). Results : Previous stroke and lower level of high density lipoprotein(HDL) cholesterol were significantly associated with geriatric depression independent of demographic characteristics, physical illnesses, and cognitive function. These associations were statistically significant only in those with APOE4, although the interaction terms didn't reach to statistical significance. Conclusion : Associations between vascular risk/disease and geriatric depression might be more prominent in those with APOE4. However further research would be needed to clarify this issue.

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한국산 겨우살이 열수추출액이 본태성 고혈압쥐의 지질성분 및 혈압 저하에 미치는 영향 (Effects of the Korean Mistletoe Hot-Water Extract on the Lipid Components and Blood Pressure Level in Spontaneously Hypertensive Rats)

  • 김한수
    • 생약학회지
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    • v.37 no.3
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    • pp.169-176
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    • 2006
  • This study was designed to observe the effects of Korean mistletoe(Viscum album L. var. coloratum Ohwi) hot-water extract administration on the improvement on the lipid components, apolipoprotein and blood pressure level in spontaneously hypertensive rats (SHR, Wistar strain, male) fed the experimental diets for 33 days. Concentrations of total cholesterol, triglyceride (TG), LDL-cholesterol, free cholesterol and atheroscieotic index in serum were significantly lower in the Korean mistletoe extract administration group [group KM(Korean mistletoe 10.0 g% hot-water extract)] than those in the control group. In the ratio of HDL-cholesterol concentration Korean mistletoe 10.0% hot-water extract administration group were higher percentage than in the control group. However, concentrations of total cholesterol and TG in liver and brain were significantly lower in the group KM than those in the control group. But the components of apolipoprotein (Apo) A-I and Apo A-II in serum were significantly higher in the KM group than in the control group. However, components of Apo C-II, Apo C-III, Apo E and ratio of Apo B to Apo A-I in serum were fairly reduced in the group KM than in the control group. The levels of systolic and diastolic blood pressure were significantly lower in KM cup than control group. From these results, Korean mistletoe hot-water extract administration were effective on the improvement of the lipid components, coronary heart disease and hypertension in spontaneously hypertensive rats. And particularly, Korean mistletoe extract administration were more effective as a therapeutic regimen for the control of blood pressure in hypertension.

Daidzein Modulations of Apolipoprotein B and Fatty Acid Synthase mRNA Expression in Chick Liver Vary Depending on Dietary Protein Levels

  • Choi, Jinho;Song, Jungmin;Choi, Yeon-Mi;Jang, Dong-Ju;Kim, Eunmi;Kim, Inho;Chee, Kew-Mahn
    • Asian-Australasian Journal of Animal Sciences
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    • v.19 no.2
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    • pp.236-244
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    • 2006
  • This study was designed to determine the effects of daidzein (DE) on hepatic lipid metabolism in chicks fed with low protein (LP) diet based on casein. In experiment 1, the male chicks were fed with one of the three levels of dietary protein containing 10.95%, 21.9% and 43.8% protein content for 2 days. In experiment 2, the chicks were fed one of the three levels of protein with or without DE at 1,000 mg/kg diet for 2 days. Experiment 3 was conducted to compare DE (LP+DE) with estradiol (LP+E2) in chicks fed with LP diet for 7 days. Plasma lipid profiles, hepatic lipid profiles, activities of hepatic malic enzyme and isocitrate dehydrogenase (ICDH) were measured. Transcriptions of hepatic fatty acid synthase, apolipoprotein-B (APO-B), and fructose bisphosphatase mRNA were measured by RT-PCR. Increasing dietary protein levels markedly decreased the concentrations of plasma triglycerides, hepatic total lipids, hepatic TG, and the mRNA transcriptions while the increased dietary protein levels increased hepatic ICDH activities in experiment 1. In experiment 2, the effects of dietary protein levels on blood and hepatic lipid content were more prominent than those of the additional DE. Interestingly, plasma TG levels were affected by DE supplementation (p<0.05). In experiment 3, DE inhibited APO-B mRNA expressions and stimulated the accumulation of lipid in the liver through mechanisms different from E2. In this study, we demonstrate that DE has beneficial effects on blood lipid profiles, but that it inhibits APO-B mRNA transcription and aggravates the fatty liver induced by LP diet in chicks.

Apolipoprotein E Expression in Experimentally Induced Intracranial Aneurysms of Rats

  • Choi, Young-Moon;Yi, Jin-Seok;Lee, Hyung-Jin;Yang, Ji-Ho;Lee, Il-Woo
    • Journal of Korean Neurosurgical Society
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    • v.39 no.1
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    • pp.46-51
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    • 2006
  • Objective : An Intracranial aneurysm is an important acquired cerebrovascular disease that can cause a catastrophic subarachnoid hemorrhage. Atherosclerosis is one of possible mechanism, but its contribution to aneurysm formation is unclear. Human apolipoprotein E[apoE] is best known for its arterial protection from atherosclerosis. In this study we observe apoE expression in experimental cerebral aneurysms of rats to elucidate the role of apoE in the process of cerebral aneurysm formation. Methods : Twenty-four male 7-week-old Sprague-Dawley strain rats received a cerebral aneurysm induction procedure. One month[12] and three months[12] after the operation, the rats were killed, their cerebral arteries were dissected, and the regions of the bifurcation of the right anterior cerebral artery-olfactory artery [ACA-OA] bifurcations were examined histologically and immunohistochemically. Results : In the 1 month group [n=12], the ACA-OA bifurcation showed no aneurysmal change in 7 rats and early aneurysmal change in 5 rats. In the 3 months group (n=12), the bifurcation showed no aneurysmal change in 2 rats and an advanced aneurysm in 10 rats. ApoE expression were in 3 specimen in early aneurysmal change, but not in advanced aneurysms. Conclusion : ApoE expression in early aneurysmal wall suggests a possible role for apoE in early events leading to aneurysm formation. Further studios are necessary to elucidate the exact role of apoE in the pathophysiology of cerebral aneurysm.

다이아지논에 의해 야기된 송사리의 이상행동 연관 분자생물지표의 선발 (Selection of Molecular Biomarkers Relevant to Abnormal Behaviors of Medaka Fish (Oryzias latipes) Caused by Diazinon)

  • 고성철;신성우;조현덕;전태수;김정상;이성규
    • Environmental Analysis Health and Toxicology
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    • v.24 no.4
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    • pp.321-332
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    • 2009
  • 본 연구의 목적은 다이아지논(Diazinon; O, O-diethyl O-[6-methyl-2 (1-methylethyl)-4-pyrimidinyl] phosphorothioate)에 노출된 모델 생물체(송사리)의 행동변화와 관련된 분자생물학적 기전 규명을 통하여 비정상적 행동의 모니터링을 위한 생물지표(biomarker)를 개발하는데 있다. 이를 위해 우선 suppression subtractive hybridization (SSH) 및 DNA microarray 기법을 활용하여 다양한 유전자를 스크리닝하였다. 다이아지논에 노출시킨 송사리에서 발현의 차이가 나는 상향 조절된 유전자 97개 (알려지지 않은 유전자 27개 포함)와 하향 조절된 유전자 99개 (알려지지 않은 유전자 60개 포함)를 동정 하였고 이들 중 이상행동과 관련되는 것으로 보이는 유전자 10개 (상향조절 5개, 하향조절 5개)를 선발하였다. 이들 중에서 primer 제작이 잘된 beta-1, Orla C3-1, parvalbumin 및 apolipoprotein E을 선발하여 그 유전자 발현을 real-time PCR 기법을 사용하여 정량적으로 모니터링 하였다. Orla C3-1, parvalbumin 및 apolipoprotein E는 고농도의 다이아지논 처리(1000 ppb; 24 h)에서 그 발현이 억제됨이 관찰되었다. 다이아지논 처리 시 신경질환 (알츠하이머 병 및 다운신드롬)에 관련된 apolipoprotein E와 근육세포의 유연화에 작용하는 parvalbumin 등의 발현억제는 송사리의 인지능력 교란 및 근육세포의 경직 등을 각각 유도하여 송사리의 비정상적 행동을 야기하는 것으로 판단되었다. 따라서 이들 생물지표는 신경독성물질에 의한 송사리 및 기타 어류의 이상행동의 변화의 감지에 활용될 수 있을 것으로 사료된다.

Synthesis of Reconstituted High Density Lipoprotein (rHDL) Containing apoA-I and apoC-III: the Functional Role of apoC-III in rHDL

  • Cho, Kyung-Hyun
    • Molecules and Cells
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    • v.27 no.3
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    • pp.291-297
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    • 2009
  • Apolipoprotein (apo) C-III is a marker protein of triacylglycerol (TG)-rich lipoproteins and high-density lipoproteins (HDL), and has been proposed as a risk factor of coronary heart disease. To compare the physiologic role of reconstituted HDL (rHDL) with or without apoC-III, we synthesized rHDL with molar ratios of apoA-I:apoC-III of 1:0, 1:0.5, 1:1, and 1:2. Increasing the apoC-III content in rHDL produced smaller rHDL particles with a lower number of apoA-I molecules. Furthermore, increasing the molar ratio of apoC-III in rHDL enhanced the surfactant-like properties and the ability to lyse dimyristoyl phosphatidylcholine. Furthermore, rHDL containing apoC-III was found to be more resistant to particle rearrangement in the presence of low-density lipoprotein (LDL) than rHDL that contained apoA-I alone. In addition, the lecithin:cholesterol acyltransferase (LCAT) activation ability was reduced as the apoC-III content of the rHDL increased; however, the CE transfer ability was not decreased by the increase of apoC-III. Finally, rHDL containing apoC-III aggravated the production of MDA in cell culture media, which led to increased cellular uptake of LDL. Thus, the addition of apoC-III to rHDL induced changes in the structural and functional properties of the rHDL, especially in particle size and rearrangement and LCAT activation. These alterations may lead to beneficial functions of HDL, which is involved in anti-atherogenic properties in the circulation.

Participation of SRE4, an URE1 Enhancer Core Sequence, in the Sterol-Mediated Transcriptional Upregulation of the Human Apolipoprotein E Gene

  • Min, Jung-Hwa;Paik, Young-Ki
    • BMB Reports
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    • v.31 no.6
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    • pp.565-571
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    • 1998
  • The expression of the endogenous human apolipoprotein(apo)E gene was significantly induced when HepG2 cells were treated with exogenous 25-hydroxy-cholesterol. This sterol-mediated apoE gene upregulation appears to require the participation of a positive element for the apoE gene transcription (PET) ( -169/ -140), a core sequence of upstream regulatory element (URE)1 enhancer of the human apoE gene. This PET was renamed as sterol regulatory element (SRE)4 based on its new role as a sensor for the level of intracellular sterol. Furthermore, a gel mobility shift analysis showed that binding activity of the SRE4 binding protein (BP) obtained from HepG2 cells was induced by sterol treatment, while that from either MCF7 or BT20 cells remained unchanged. Binding activity of SRE4BP was also induced in mouse macrophage cells, J774A.1, by sterol treatment, but it was drastically reduced when cells were subjected to treatment of AY-9944, a potent inhibitor for sterol synthesis. However, binding activity of Spl, which is a co-binding protein to the SRE4 region, remained the same in either condition, suggesting that SRE4BP (formally known as PETBP) may be mainly responsible for the sterol-mediated regulation of the apoE gene expression. Deletion analysis of the core binding site of SRE4BP by gel mobility shift assays showed that the minimal sequence of the SRE4BP binding appears to reside between -157 and -140, confirming the identity of SRE4 with the previously determined core sequence of URE1.

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