• Nutrition Research and Practice
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• 제6권4호
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• pp.308-314
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• 2012

Radish (Raphanus sativus L.) is a cruciferous vegetable, and its leaves have antioxidant and anticancer properties. This study was conducted to evaluate the effects of ethyl acetate extracts from radish leaves on hypertension in 11-week-old spontaneously hypertensive rats (SHRs). The SHRs were randomly divided into 3 groups of 6 rats each on the basis of initial systolic blood pressure (SBP) and were treated with oral administration of radish leaf extract (0, 30, or 90 mg/kg body weight [bw], respectively) for 5 weeks. Six Wistar rats were used as normotensive controls. The amount of the radish leaf extract had no effect on body weight. The SBP of the SHRs showed a decreasing trend with the consumption of the radish leaf extract. In the third week, the SBP of the group fed 90 mg extract/kg bw reduced from 214 mmHg to 166 mmHg and was significantly lower than that of the normotensive and hypertensive controls. The extract did not show a significant effect on the angiotensin-converting enzyme (ACE) activity in the serum, kidney, and lung. The extract increased the concentration of NO in serum and the activities of antioxidant enzymes such as glutathione peroxidase and catalase in red blood cells (RBCs). The serum concentrations of $Na^+$ and $K^+$ were not significantly different between all groups. However, the fecal concentrations of $Na^+$ and $K^+$ increased; the fecal concentrations of $Na^+$ and$K^+$for the normotensive and hypertensive controls were not different. Urinary excretion of $Na^+$ was higher in the normotensive Wistar rats than in the SHRs, while that of $K^+$ was not significantly different. These findings indicate that consumption of radish leaves might have had antihypertensive effects in SHRs by increasing the serum concentration of NO and fecal concentration of $Na^+$ and enhancing antioxidant activities.

• 한국식품영양과학회지
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• 제32권3호
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• pp.464-468
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• 2003

홍국의 장기섭취가 자연발증 고혈압 쥐(SHR)의 혈압상승 및 혈중 콜레스테롤 조성에 미치는 영향을 조사하였다. Monascus ruber IFO 32318 균주로 제조한 홍국을 각각 0.03%, 0.1%, 0.3% 첨가한 식이를 8주간 섭취시킨 후 모든 실험군을 일반식이로 전환시켜 다시 2주간 사육하였다. 식이섭취 2주 째부터 대조군에 비해 홍국 섭취군에서 수축기혈압, 이완기 혈압 및 평균혈압의 유의적인 상승 억제효과가 나타났으며 그 효과는 식이에 첨가된 홍국의 양에 비례하였고 홍국첨가 식이를 중단하면 실험군 간의 각 혈압의 유의적인 차이는 사라졌다. 또한 홍국은 SHR의 혈중 VLDL-C의 함량을 유의적으로 저하시켰으며 TC 및 LDL-C은 홍국 첨가량이 많을수록 낮은 경향을 나타내었고 HDL-C은 대조군, group I 및 group II가 거의 동일하였으며 홍국 첨가량이 가장 많은 group III에서만 약간 높은 경향을 나타내었다. 또한 동맥경화의 지표가 되는 TC과 HDL-C의 비율 및 non-HDL-C과 HDL-E의 비율은 홍국 섭취량이 증가할수록 감소하는 경향을 보였고 LDL-C과 HDL-C의 비율 또한 홍국 섭취군이 대조군보다 유의적으로 낮은 값을 나타내었다. 이러한 모든 효과는 홍국을 식이 섭취량의 0.1% 이상 첨가한 실험군에서 뚜렷이 나타났다.

• Journal of Preventive Medicine and Public Health
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• 제53권6호
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• pp.476-486
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• 2020

Objectives: The objective of this study was to estimate the risk of lung cancer in relation to angiotensin II receptor blocker (ARB) use among patients with hypertension from the Korean National Health Insurance Service-National Health Screening Cohort. Methods: We conducted a retrospective cohort study of patients with hypertension who started to take antihypertensive medications and had a treatment period of at least 6 months. We calculated the weighted hazard ratios (HRs) and their 95% confidence intervals (CIs) of lung cancer associated with ARB use compared with calcium channel blocker (CCB) use using inverse probability treatment weighting. Results: Among a total of 60 469 subjects with a median follow-up time of 7.8 years, 476 cases of lung cancer were identified. ARB use had a protective effect on lung cancer compared with CCB use (HR, 0.75; 95% CI, 0.59 to 0.96). Consistent findings were found in analyses considering patients who changed or discontinued their medication (HR, 0.50; 95% CI, 0.32 to 0.77), as well as for women (HR, 0.56; 95% CI, 0.34 to 0.93), patients without chronic obstructive pulmonary disease (HR, 0.75; 95% CI, 0.56 to 1.00), never-smokers (HR, 0.64; 95% CI, 0.42 to 0.99), and non-drinkers (HR, 0.69; 95% CI, 0.49 to 0.97). In analyses with different comparison antihypertensive medications, the overall protective effects of ARBs on lung cancer risk remained consistent. Conclusions: The results of the present study suggest that ARBs could decrease the risk of lung cancer. More evidence is needed to establish the causal effect of ARBs on the incidence of lung cancer.

• 한국한의학연구원논문집
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• 제14권1호
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• pp.67-72
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• 2008

Objectives : The purpose of the study was to determine the effects of a 4 weeks Meridian Tai Ji exercise treatment on blood pressure reducing in hypertensive patients. Methods : We measured the blood pressure of 3 patients who were visited in the Gwacheon Health center from 21th November 2007 to 17th December 2007. Eligible participants had systolic blood pressure ${\geq}$ 120 mmHg or diastolic blood pressure ${\geq}$ 80 mmHg with antihypertensive drug. Blood pressure measurements were after the patient had been in rest for at least 10 minute. Twelve sessions of Meridian Tai Ji exercise treatment over 4 weeks were performed in the patients. Blood pressure were measured twice before and after each session. Results : After 4 weeks, blood pressure reduction was observed in the treatment patients, with an average decline of systolic blood pressure up to 5.67 mmHg and diastolic blood pressure up to 0.17 mmHg. But, it was not statistically significant. Blood pressure increased between measurements taken before and after an Meridian Tai Ji exercise treatment session, although individual responses were quite variable. No significant difference was found in the immediate effect. Conclusion : Twelve sessions of Meridian Tai Ji exercise treatment do not seem to control hypertension. Further research is required to determine whether Meridian Tai Ji exercise treatment can enhance clinical management of hypertension if it is used in combination with more enrolled participants, over longer periods, or randomized controlled trial.

• The Korean Journal of Physiology and Pharmacology
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• 제13권4호
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• pp.287-293
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• 2009

The dried roots of Danshen (Salvia miltiorrhiza) and Sanchi (Panax notoginseng) have been widely used in traditional Chinese medicine for promoting blood circulation as well as various other bodily functions. Here we investigated the effects of a mixture of aqueous extracts of Danshen and Sanchi, named PASEL, on blood pressure and vascular contractility in rats. Orally administered PASEL (62.5 mg/kg and 250 mg/kg, for 5 weeks) lowered the blood pressure of spontaneous hypertensive rats (SHR) but this was not observed in normal Wistar-Kyoto rats (WKR). We then investigated the effects of PASEL on the arterial contraction of the small branches of cerebral arteries (CAs) and large conduit femoral arteries (FAs) in rats. PASEL did not affect high-K (KCI 60 mM)- or phenyleprine (PhE)-induced contracture of FAs. The myogenic response, a reactive arterial constriction in response to increased luminal pressure, of small CA was dose-dependently suppressed by PASEL in SHR as well as control rats. Interestingly, the KCI-induced contraction of small CAs was slowly reversed by PASEL, and this effect was more prominent in SHR than control WKR. PASEL did not inhibit angiotensin-converting enzyme (ACE) activity. These results demonstrated that the antihypertensive effect of PASEL might be primarily mediated by altering the arterial MR, not by direct inhibition of L-type $Ca^{2+}$ channels or by ACE inhibition.

• Nutrition Research and Practice
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• 제11권5호
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• pp.388-395
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• 2017

BACKGROUND/OBJECTIVES: Although Korean fermented foods contain large amounts of salt, which is known to exacerbate health problems, these foods still have beneficial effects such as anti-hypertension, anti-cancer, and anti-colitis properties. We hypothesized that ganjang may have different effects on blood pressure compared to same concentrations of salt. MATERIALS/METHODS: Sprague-Dawley rats were divided into control (CT), NaCl (NC), and ganjang (GJ) groups and orally administered with 8% NaCl concentration for 9 weeks. The systolic blood pressure (SBP), serum chemistry, $Na^+$ and $K^+$ concentrations and renal gene expressions were measured. RESULTS: The SBP was significantly increased in the NC group compared to the GJ and CT groups. In addition, the $Na^+$ concentration in urine was higher in the GJ and NC groups than the CT group, but the urine volume was increased in the GJ group compared to the other groups. The serum renin levels were decreased in the GJ group compared to the CT group, while the serum aldosterone level was decreased in the GJ group relative to the NC group. The mRNA expression of the renin, angiotensin II type I receptor, and mineralocorticoid receptor were significantly lower in the GJ group compared to other groups. Furthermore, GJ group showed the lowest levels of genes for $Na^+$ transporter in kidney cortex such as $Na^+/K^+$ $ATPase{\alpha}1$ ($NKA{\alpha}1$), $Na^+/H^+$ exchanger 3 (NHE3), $Na^+/HCO_3{^-}$ co-exchanger (NBC), and carbonic anhydrases II (CAII). CONCLUSIONS: The decreased SBP in the GJ could be due to decreased renin and aldosterone levels in serum and increased urinary volume and excretion of $Na^+$ with its transporter gene alteration. Therefore, ganjang may have antihypertensive effect despite its high contents of salt.

• The Korean Journal of Physiology and Pharmacology
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• 제17권4호
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• pp.339-345
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• 2013

We investigated the antihypertensive effect of lutein on $N^G$-nitro-L-arginine methyl ester hydrochloride (L-NAME)-induced hypertensive rats. Daily oral administration of L-NAME (40 mg/kg)-induced a rapid progressive increase in mean arterial pressure (MAP). L-NAME significantly increased MAP from the first week compared to that in the control and reached $193.3{\pm}9.6$ mmHg at the end of treatment. MAP in the lutein groups was dose-dependently lower than that in the L-NAME group. Similar results were observed for systolic and diastolic blood pressure of L-NAME-induced hypertensive rats. The control group showed little change in heart rate for 3 weeks, whereas L-NAME significantly reduced heart rate from $434{\pm}26$ to $376{\pm}33$ beats/min. Lutein (2 mg/kg) significantly prevented the reduced heart rate induced by L-NAME. L-NAME caused hypertrophy of heart and kidney, and increased plasma lipid peroxidation four-fold but significantly reduced plasma nitrite and glutathione concentrations, which were significantly prevented by lutein in a dose-dependent manner. These findings suggest that lutein affords significant antihypertensive and antioxidant effects against L-NAME-induced hypertension in rats.

• 한국식품위생안전성학회:학술대회논문집
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• 한국식품위생안전성학회 2004년도 추계심포지움 및 학술발표회 : 건강기능식품의 안전성 평가와 개발
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• pp.50-58
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• 2004

성인을 대상으로 펩타이드의 강압효과를 검토하기 위해, 경증고혈압증군(輕症高血壓症群) (평균연령 50.2${\pm}$5.6세, 남9명, 여1명) 및 정상고혈압군 (평균연령 47.7${\pm}$2.8세, 남9명) 에 있어서, 플라시보를 이용한 2중맹검법(2重盲檢法)에 따른 비교대조시험을 실시했다. 경증고혈압증군에서는 Valy-Tyrosine(VY) 환산으로 125${\mu}$g/day의 '펩타이드 음료'에 의해 혈압 저하의 경향이 확인되었고 VY 환산250${\mu}$g/day의 펩타이드 음용량으로 플라시보군에 비해서 유의한 강압이 확인되었다. (음용개시 4주후에서 수축기혈압 17.8${\pm}$2.5mmHg: p <0.01, 확장기혈압 11.0${\pm}$2.0mmHg: p (0.05). 정상고치혈압군(正常高値血壓群)에서는 유의한 혈압강하를 확인하지 못했다. 양 군(群)에서 공히 심박수의 변화는 없었다. 경증고혈압군 (평균연령 50.6${\pm}$4.6세, 남10명) 에 있어서 VY 125${\mu}$g/day의 음용량에서는 전후기 각 4주간의 비교대조교차실험을 했다. 펩타이드 전기 음용군(0-4주)에서는, 음용개시 1주후에 수축기 · 확장기 혈압 모두 유의한 혈압저하작용이 확인되었다. (수축기혈압의 변화율-6.9%, 확장기혈압의 변화율-5.8%, p <0.05) 펩타이드 후기 음용군(10-14주)에서는, 수축기혈압이 음용개시 3주후(변화율-6.7%, p <0.05)에, 확장기혈압이 음용개시 2주후(변화율 6.0%, p <0.05)에 각각 유의한 강압이 확인되었다. 양 군 모두 음용 중지 후에 혈압의 완만한 복귀가 관찰되었다. 전 대상자에 있어서 자각증상, 타각소견(他覺所見)과 함께 이상(異常)은 확인되지 않았으며 부작용도 없었다. 이상의 결과로부터, ‘펩타이드 음료’는 경증고혈압 혹은 경계역고혈압자(境界域高血壓者)의 혈압을, 자각증상 및 혈액${\cdot}$뇨검사에도 전혀 영향을 미치지 않고 저하시킨다고 결론지었다.

• 한국식품위생안전성학회:학술대회논문집
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• 한국식품위생안전성학회 2004년도 추계심포지움 및 학술발표회 : 건강기능식품의 안전성 평가와 개발
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• pp.59-70
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• 2004

A randomized double-blind placebo-controlled study was conducted on 63 subjects to determine the antihypertensive effect of a vegetable drink in which sardine protein hydrolysates containing a dipeptide, Valyl-Tyrosine (VY), were incorporated. The subjects, consisting of people with mild hypertension, high-normal blood pressure and normal blood pressure, were randomly divided into test (male/female=25.6, average age 50.1${\pm}$10.4 years old) and control groups (26/6, 49.0${\pm}$5.0). Each subjects in the test group was given 195g of the vegetable drink containing 0.5g of sardine peptides (sardine protein hydrolysates) with 0.4 mg of VY (test drink) once a day for 13 weeks in a row, and subjects in the control group were given the same amount of the vegetable drink without sardine peptides (control drink) in the same manner. In the test group, 40 subjects with mild hypertension of high-normal blood pressure (130 mmHg${\leq}$systolic blood pressure (SBP)<160 mmHg and/or 80 mmHg${\leq}$diastolic blood the start of the test to 134.4${\pm}$11.1 mmHg during the first week of the test period, after which similar values were seen throughout the test period (13 weeks). Compared to the control group, the difference in SBP from vaseline was statistically significant in the test group throughout the intake period. DBP also decreased significantly from 88.0${\pm}$7.9 mmHg at baseline to 83.5${\pm}$8.6 mmHg after 13 weeks. In the control group, SBP and DBP were 140.8${\pm}$8.4 mmHg and 90.5${\pm}$6.6 mmHg respectively at the start of the test, and neither decreased during the test period. In subjects with normal blood pressure, neither those in the test group nor those in the control group showed a significant change in SBP and DBP during the test period. An excessive ingestion test was performed on 25 subjects with hypertension, mild hypertension, high-normal blood pressure, and normal blood pressure by giving 585g (3 times the recommended amount of intake) of the test drink for 14 days in a row. As a result, a significant decrease of blood pressure was observed in the hypertension, mild hypertension and high-normal blood pressure groups, but no excessive decline in blood pressure or any side-effects were associated with any subjects during the test period. In the groups with normal blood pressure, the excessive ingestion of the test drink did not affect blood pressure. In these two studies, physical check-ups and biochemical analyses of blood and urine were also conducted in all subjects, and no abnormalities were observed. These results suggest that the test drink containing sardine protein hydrolysates exhibited the antihypertensive effect in only the subjects with mild hypertension or high-normal blood pressure. No adverse effects were observed in either hypertensive of normotensive subjects.

• 고려인삼학회:학술대회논문집
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• 고려인삼학회 1980년도 학술대회지
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• pp.1-3
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• 1980

To investigate the effect of ginseng on blood pressure (B.P.) in spontaneously hypertensive rat (SHR) and essential hypertension ginseng extract was given per se daily in 58 SHR and 35 essential hypertensive patients. SHR were divided into 5 groups according to the dosage of ginseng. In essential hypertension 1,000mg of ginseng extract was given. The B.P. in SHR was measured by tail cuff method. In essential hypertension side effect and changes in various laboratory examinations were evaluated. In SHR ginseng appeared to have hypertensive effect when it is given in small amount(10mg/kg). However, when it is given 60mg/kg/day or more difinite B.P. lowering effect was observed. The hypotensive effect was dosedependant and it lasted for 37days of observation. In essential hypertension in 12 $(80\%)$ among 15 patients hypotensive effect was seen with ginseng administration along and the effect lasted for 12 weeks. In the rest of hypertensive patients it is required addition of diuretics of other antihypertensive drugs to decrease B.P., no appreciable side effect was seen. In laboratory examinations no significant changes were seen except for serum cholesterol, ${\alpha}-and\;{\beta}-lipoprotein,$ and hematocrit. There was some evidence of relationship between plasma renin activity (PRA) and ginseng in hypotensive action.