• Title/Summary/Keyword: Development of hypertension

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Expression of Vascular Endothelin-1 and Nitric Oxide Synthase in Fructose-fed Hypertensive Rats (과당식이 고혈압 흰쥐에서 혈관 Endothelin-1과 산화질소합성효소의 발현)

  • Paek, Yun-Woong;Kim, Myung-Hoon
    • Journal of Korean Physical Therapy Science
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    • v.9 no.4
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    • pp.45-52
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    • 2002
  • Rats that are fed a fructose-rich diet develop hypertension, insulin resistance, and hypertriglyceridemia. To elucidate whether altered expression levels of endothelin-1 and nitric oxide synthase are related to the development of insulin-resistant hypertension, we examined the present study. Male Sprague-Dawley rats were fed a fructose-rich diet for 5 weeks. Systolic blood pressure significantly increased in fructose-fed rats. While serum free fatty acid and plasma nitrite/nitrate levels did not significantly differ between the fructose-fed and control groups, plasma insulin and serum triglyceride concentrations significantly increased in the former. Endothelin-1 mRNA expression in the aorta increased in fructose-fed rats. Neither the protein expression of constitutive nitric oxide synthase nor that of inducible nitric oxide synthase were significantly affected by fructose feeding. However, nitrite/nitrate levels in the aorta were significantly increased. These results suggest that an increase in vascular endothelin-1 is an important contributing factor to the development of hypertension in fructose-fed rats. However, the vascular nitric oxide pathway may not be causally related to the development of fructose-induced hypertension.

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Nutritional Environment Influences Hypertension in the Middle-aged Korean Adults - based on 1998 & 2001 National Health and Nutrition Survey - (한국 중년성인의 고혈압과 영양환경요인의 관련성 - 1998년과 2001년 국민건강.영양조사 결과에 근거하여 -)

  • Lee, Hae-Jeung;Lee, Haeng-Shin;Lee, Yoon-Na;Jang, Young-Ai;Moon, Jae-Jin;Kim, Cho-Il
    • Korean Journal of Community Nutrition
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    • v.12 no.3
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    • pp.272-283
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    • 2007
  • This study was performed to delineate the relationship between lifestyle and nutritional risk factors associated with hypertension in representative middle-aged Korean population. Hypertension in this study is defined as hypertensive ($SBP{\geq}140mmHg\;or\;DBP{\geq}90mmHg$) adults without recognition of a disease state before a health exam. With data from the 1998 and 2001 National Health and Nutritional Survey, nutrient intakes of 6,112 adults, 40-64 years of age were calculated using food composition database and matched with health examination records by individual ID. After excluding those with extreme intake values, the number of final subjects included in the analysis was 5,200 (male 2,458, female 2,742). Using logistic regression method, socio-demographic data, lifestyle factors, and nutrient intakes were analyzed. Risky factors for hypertension revealed in this study were age, sex, BMI over 23, waist circumference, alcohol intake of more than 16g (male) or 8g (female). Regarding nutrient intakes, the intakes of highest quartile for energy (${\geq}2363.0kcal$) and protein (${\geq}90.2g$) were significantly associated with higher risk of hypertension after adjusting for age, sex, and other socio-demographic factors (OR=1.312(1.046-1.711), OR=1.488(1.194-1.854), respectively)). Although high intakes of sodium (${\geq}6604.0mg$) and phosphorus seemed to be risk factors of hypertension also before energy adjustment (OR=1.278(1.034-1.581), OR=1.280(1.024-1.600), respectively), only high intakes of energy and protein remained significant after adjustment. This study revealed that modifying risky lifestyles and dietary patterns, especially high energy intake, high protein intake, and high alcohol drinking, in middle-aged Korean adults could result in a prevalence decrease and/or prevention of hypertension.

Increased Expression of Nitric Oxide Synthase Coincides with Reversal of Renovascular Hypertension

  • Park, Yun-Woong;Park, Yung-Hyun;Kim, Soo-Wan;Lee, Jong-Un
    • The Korean Journal of Physiology and Pharmacology
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    • v.4 no.2
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    • pp.143-147
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    • 2000
  • The present study was aimed at investigating whether there are changes in the expression of nitric oxide synthase (NOS) in relation with the unclipping-induced fall of blood pressure in two-kidney, one clip (2K1C) hypertension. Male Sprague-Dawley rats were made 2K1C hypertensive by clipping the left renal artery for four weeks. Sham-clipped rats served as control. The expression of endothelial constitutive (ec) NOS proteins and tissue levels of NO metabolites were determined in the kidney. Systolic blood pressure was significantly increased in clipped rats compared with that in the control. The development of hypertension was associated with decreases in the expression of ecNOS proteins and tissue levels of NO metabolites in the clipped kidney. The blood pressure at twenty-four hours after removal of the renal arterial clip fell to the control level. Accordingly, in the unclipped kidney, the expression of ecNOS proteins and tissue contents of NO metabolites were increased to the control level. The contralateral kidney was not affected by the development or reversal of hypertension. It is suggested that an enhanced expression of ecNOS in the unclipped kidney is an important component in the reversal of renovascular hypertension.

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Effects of Black Ginseng on Hypertension-induced Rats (흑삼이 폐고혈압 유발 흰쥐에 미치는 영향)

  • Song, Nak-Keun;Choi, Hak-Ju;Kim, Dong-Hee;Roh, Seong-Soo;Seo, Young-Bae
    • The Korea Journal of Herbology
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    • v.24 no.4
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    • pp.69-75
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    • 2009
  • Objectives : To access the safety and efficacy of Black Ginseng (BG), a traditional herbal medicine on hypertension, we examined various parameters involved in the pathogenesis of hypertension. Methods : We made deoxycorticosterone acetate (DOCA;25 mg/kg/3times/weeks for 3 weeks)-induced hypertension Sprague-Dawley (SD) rats. And experiment group was treated with extract of black ginseng (BG;200 mg/kg/day). Results : In results, the weight of experiment group treated with BG was increased compared with normal and control group. And the heart and lung weights of experiment group were decreased compared with control group. The blood pressure and pulse rate of group treated with BG were significantly decreased compared with control group. In addition, BG greatly reduced the levels of aldosterone. These results suggested that BG has suppressive effects on hypertension, and BG has potential as a safe and effective therapeutics for hypertension. Conclusions : The present data show evidences on anti-hypertension activity of BG in an experimental animal system, which can provide further insights into the development of anti-hypertension therapeutic agents.

Association Analysis of Reactive Oxygen Species-Hypertension Genes Discovered by Literature Mining

  • Lim, Ji Eun;Hong, Kyung-Won;Jin, Hyun-Seok;Oh, Bermseok
    • Genomics & Informatics
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    • v.10 no.4
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    • pp.244-248
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    • 2012
  • Oxidative stress, which results in an excessive product of reactive oxygen species (ROS), is one of the fundamental mechanisms of the development of hypertension. In the vascular system, ROS have physical and pathophysiological roles in vascular remodeling and endothelial dysfunction. In this study, ROS-hypertension-related genes were collected by the biological literature-mining tools, such as SciMiner and gene2pubmed, in order to identify the genes that would cause hypertension through ROS. Further, single nucleotide polymorphisms (SNPs) located within these gene regions were examined statistically for their association with hypertension in 6,419 Korean individuals, and pathway enrichment analysis using the associated genes was performed. The 2,945 SNPs of 237 ROS-hypertension genes were analyzed, and 68 genes were significantly associated with hypertension (p < 0.05). The most significant SNP was rs2889611 within MAPK8 (p = $2.70{\times}10^{-5}$; odds ratio, 0.82; confidence interval, 0.75 to 0.90). This study demonstrates that a text mining approach combined with association analysis may be useful to identify the candidate genes that cause hypertension through ROS or oxidative stress.

Comparison of Electrodermal Activity between Hypertensive and Non-hypertensive Subject in Health Screening Population (건강검진자 대상 고혈압 유무에 따른 피부전기활동성 비교 연구)

  • Kim, Young Eun;Kim, Chul;Yea, Sang Jun;Yang, Chang Sop;Song, Mi Young
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.27 no.6
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    • pp.847-852
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    • 2013
  • The aim of this study was to investigate the difference of electrodermal activity between the hypertensive and non-hypertensive subjects. A total 161 subjects who visited a hospital for health check ups from August 2011 through November 2011 and from September 2012 through November 2012 were included in this study. We divided the subjects into two groups by blood pressure, hypertension group(81 patients) and non-hypertension group(180 subject). Then we compared electrodermal activity between two groups by using the autonomic bioelectric response device model CP-6000A. The data was analyzed by independent t-test and logistic regression. In this study, there was a significant difference in electrodermal activity(the mean absolute value of positive, negative pulse conductivity) between hypertensive and normotensive group in t-test and electrodermal activity showed the significant influence on the prevalence risk of hypertension with age, body mass index and dyslipidema in binominal logistic regression. In conclusion, hypertensive patients had high level of electrodermal activity compared with normotensive subjects and this finding suggests that electrodermal activity which is explained excess tendency in Korean traditional medicine could be used for diagnosis in hypertension patients at Korean traditional medical clinic.

Development an Evaluation Tool for Evaluation of Hypertension Prevention and Management Program in Community Health Posts (보건진료소의 고혈압예방 및 관리사업 평가도구 개발)

  • Cho, Won-Jung;Kwon, Myung-Soon
    • Research in Community and Public Health Nursing
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    • v.15 no.2
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    • pp.197-208
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    • 2004
  • Purpose: This study was to develop an effective evaluation tool for evaluation of hypertension prevention and management program(HPMP) in community health posts (CHPs). Method: Evaluation tool composed from the literature review, the field visiting, and the in-depth interviews with the community health practitioners. Result: The evaluation tool had four domains, each with different maximum points:, hypertension prevention (35), hypertension management (40), environment of the CHPs(10), and evaluation system of the HPMP(15). The first domain was hypertension prevention with sub-domains of health education, and early detection of patients with hypertension. The second domain was hypertension management with sub-domains of management of health records of patients, education and counseling, and treatment and follow-up of patients. The third domain was the environment of the CHPs with subdomains of accessibility of CHPs to residents, accessibility of general health data to the public, and availability of health information to the public by multimedia. The fourth domain was the evaluation system of the HPMP with the subdomains of planning of program, formative evaluation, process evaluation, and summative evaluation. Conclusion: The newly developed evaluation tool will contribute not only to plan and set goals for evaluation of HPMP in CHPs.

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Educational Needs for Health Promotion Core Competencies among Personnels of Hypertension and Diabetes Control in Community (지역사회 고혈압·당뇨병 예방관리 인력의 건강증진 핵심역량 교육요구도)

  • Kim, Eun-Ji;Kim, Myung
    • The Journal of Korean Society for School & Community Health Education
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    • v.17 no.3
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    • pp.87-101
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    • 2016
  • Objectives: This study was for analysis the educational needs of personnels who works for hypertension and diabetes centers in community in order to serve as the basis for the development of the future educational programs. Methods: To analyze the educational needs of personnels who wokrs for hypertension and diabetes centers in community, a survey based on CompHP core competencies framework for health promotion was conducted in September 2016. 102 personnels were answered to the online questionnaires and collected data were analyzed through SPSS. Results: The highest point of educational needs was 'how to use verbal and non-verbal effective communication skills' among 46 core competencies for health promotion and 'self-management practical skills for hypertension and diabetes patients'. There were some differences of educational needs between leaders and general staff members of centers. Most wanted educational subjects of leaders are 'contribute to the development and dissemination of health promotion evaluation and research process', and 'use evaluation findings to refine and improve health promotion action'. On the other hand, most general staff members of centers wanted 'use effective communication skills including written, verbal, non-verbal, and listening skills' and 'facilitate the development of personal skills that will maintain and improve health. Conclusions: Evidence-based and long-term educational programs should be developed for personnels who works for hypertension and diabetes centers in community.

A Clinical Study on the Effects of the Aromatherapy for Hypertension (향기요법의 혈압 강하 효과에 대한 임상연구)

  • Jang, Hyun-Ho;Min, Sang-Jun;Yang, Hee-Suk;Lyu, Yeoung-Su;Lee, Geon-Mok;Kang, Hyung-Won
    • Journal of Oriental Neuropsychiatry
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    • v.13 no.1
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    • pp.3-18
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    • 2002
  • Hypertension excessively affects national health is the basic disease that causes death and disablement after the middle-aged. Therefore, The detection and control of hypertension is essential to health care. In general, It is known that the systolic blood pressure should be below 140mmHg, the diastolic blood pressure should be below 90mmHg. Presently, the treatment of hypertension is mostly taking anti-hypertension drug, diet and stability. but Taking anti-hypertension drug has such side effects as depression. and that, We were making a study of various treatments of hypertension. In a course of hypertension study, We applied aromatherapy to the control of hypertension. Aromatherapy is the practice of using of volate plant oils including essential oils, for psychological and physical well-being. Essential oils are drawn into the body by the sense smell not only does the aroma of the true plant stimulate the brain to the trigger a positive effect, but supply physical benefits also. In Europe and North America, The study and development of aromatherapy is lively in progress. In the control of hypertension, We applied Lavender, Majoram, Ylang-Ylang to forty-two hypertensive patients. After aromatherapy for controlling hypertension. We measured the changes of the systolic blood pressure & the diastolic blood pressure of patients by time. As the result of above study, We identified the significance of blood pressure down by aromatherapy.

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Effects of electroacupuncture on the expression of iNOS in Nuclei of solitary tract and Rostral ventrolateral medulla in spontaneously hypertensive rats (전침자극이 자연 발증 고혈압 흰쥐의 혈압 조절 중추에서 iNOS의 발현에 미치는 영향)

  • Hwang, Hye-Suk;Kim, Yu-Sung;Lee, Ji-Eun;Han, Kyung-Ju;Choi, Sun-Mi;Koo, Sung-Tae
    • Korean Journal of Oriental Medicine
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    • v.12 no.3 s.18
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    • pp.59-67
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    • 2006
  • Aims: Acupuncture has been used for the treatment of essential hypertension, but the efficacy and the mechanism of acupuncture in prevention of hypertension are still unclear. We tested the hypothesis that electroacupuncture (EA) applied to Baekhoe (GV20) changes NO/NOS system during development of hypertension in spontaneously hypertensive rats (SHR), and thereby causes the delay of development of hypertension in SHR. Methods: The male SHR rats in the developmental stages of hypertension (7-8 weeks) were randomly divided into three groups (control group, GV20 acupuncture group, and tail acupuncture group). And the age matched Wistar Koyto Rats (WKY) were randomly divided into two groups (nagative control, GV20 acupuncture group). EA treatments (10Hz, 1mA, 0.1ms) were carried out for 25 min/day for five consecutive days. The systolic blood pressure (SBP) was determined in conscious rats by the tail-cuff method using automatic BP mornitoring system. We investigated the activations of inducible NO synthase (iNOS) in nuclei of solitary tract (NTS) and rostral ventrolateral medulla (RVLM) of SHR by the western blotting method. Results: The SBP after the termination of EA stimulation applied to the GV20 was stabilized at $169.14{\pm}3.67$ mmHg which is lower value than that of the control group. The SBP of control group was elevated to $178.14{\pm}3.49$ mmHg. In addition, we evaluated NOS activity as well as iNOS protein expression of NTS and RVLM in both of SHR and WKY. The iNOS activity in NTS was significantly higher in SHR than in WKY. Furthermore, the iNOS activity of NTS showed significant decreases in EA groups compare to that of non treated SHR group. Although iNOS expression of RVLM showed non significant changes between SHR and WKY, EA significantly enhanced the iNOS expression in SHR. Our data support the hypothesis that delayed development of hypertension and altered iNOS expression of NTS and RVLM by EA stimulations in SHR rats. Conclusions: The findings demonstrate that acupuncture can change NO/NOS system in NTS and RVLM, and exert beneficial role on development of hypertension.

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