• Title/Summary/Keyword: Spontaneously

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Anti-hypertensive Effects of Pini Folium and Leonuri Herba Extract on Spontaneously Hypertensive Rat (SHR) (SHR(Spontaneously Hypertensive Rat)를 이용한 송엽, 익모초 추출물의 항고협알 작용)

  • 박건구;류재원;최은경;노환성
    • Biomolecules & Therapeutics
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    • v.8 no.1
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    • pp.27-31
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    • 2000
  • The aim of this study was to investigate a potential effect of treatment of spontaneously hypertensive rats (SHR) with Pini Folium or Leonuri Herba extracts. Male SHR were treated with extracts for 2 or 4 weeks starting at 13 weeks of age. We found that oral treatment with the methanol extract from Pini Folium or Leonuri Herba (1g/Kg/day) significantly decreased mean blood pressure to 85.4% and 78.6% respectively in compare with untreated control SHR. Treatment with the extract from Pini Folium for 4 weeks during hypertension development phase (starting 9 weeks of age) resulted in a partial prevention of hypertension development. There were no significant differences for body weight between untreated and Pini Folium treated SHR.

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Spontaneous Rupture of the Intraperitoneal Metastatic Hepatocellular Carcinoma: a Case Report with Magnetic Resonance Imaging Findings

  • Kim, Hee Jeong;Park, Mi-hyun
    • Investigative Magnetic Resonance Imaging
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    • v.22 no.3
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    • pp.177-181
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    • 2018
  • Intraperitoneal metastatic hepatocellular carcinoma (HCC) is uncommon. Although rare, it can spontaneously rupture and cause hemoperitoneum similar to primary HCC in the liver. We present a case of intraperitoneal metastatic HCC that had spontaneously ruptured and appeared as an irregularly margined hemorrhagic mass with T1 high and T2 dark signal intensities on magnetic resonance imaging. Ruptured HCC is a life-threatening emergency with high mortality rate. Spontaneously ruptured intraperitoneal metastatic HCC should be considered if a patient with a history of HCC presents with acute abdomen, although rare.

Effects of Running Training on Superoxide Production in Spontaneously Hypertensive Rats (트레드밀달리기 훈련이 자연발생고혈압쥐의 Superoxide 생성에 미치는 효과)

  • Jang, Hak-Yeong;Kim, Won-Sik;Jang, Seung-Jin;Choe, Hyeong-Min
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2009.05a
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    • pp.97-100
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    • 2009
  • The purpose of this study was to examine effects of treadmill running training on superoxide product of spontaneously hypertensive rats. 20 males aged five week old rats were used for the experiments. They were randomly selected into experimental group (10 rats) and control group (10 rats) after being housed in laboratory for two weeks. The rats of experimental group performed treadmill exercise from 15 minutes for the first time to 35 minutes for the last one in order to familiar with experimental protocol ($VO_{2}max\;65{\sim}70%$, 0.9km/h, 5 times/week, 35 minutes/session). They began to perform treadmill running at the age of eight weeks for eight weeks. Superoxide production and NADPH oxidase activities were measured on the aortal from end of experiment. All statistical analyses and description methods were computed by SPSS Version 10.0. Differences in the values between experimental group and control group were calculated using t-tests. The results of this study were: there wewe no significant differences in superoxide production, NADPH oxidase-drivened superoxide activity, NADPH oxidase activity between two groups (p>.05). Spontaneously hypertensive rats of experimental group were characterized by higher superoxide production and lower NADPH oxidase-drivened superoxide activity and NADPH oxidase activity in comparison with the control group. One possible explanation of this finding was that NADPH oxidase activity of experimental group was lower than the control group. It can be concluded that treadmill running for eight weeks was associated positively with superoxide product of spontaneously hypertensive rats.

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Difference in NOS between 2 Hz and 100 Hz EA in cerebral cortex, brain stem and cerebellum of spontaneously hypertensive rats (전침자극이 Spontaneously Hypertensive Rat의 대뇌겉질, 뇌줄기, 소뇌 부위의 Nitric Oxide Synthase 신경세포에 미치는 영향)

  • Kim, Jong-In;kim, Yong-Suk;Kim, Chang-Hwan
    • Journal of Acupuncture Research
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    • v.18 no.4
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    • pp.116-124
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    • 2001
  • Background and Objetive : The aim of this study was to investigate the effect of various electroacupuncture stimulation on NADPH-diaphorase in cerebral cortex, brain stem, cerebellum of spontaneously hypertensive rats. Materials and Methods : We evaluated the changes of NADPH-d-positive neurons using a histochemical method. The staining intensity of NADPH-d-positive neurons was assessed in a quantitative fashion using a microdensitometrical method based on optical density by means of an image analyzer. Results and Conculsion : The average optical density of NADPH-d-positive neurons of 100 Hz (bipolar square wave 0.2 ms duration and 100 Hz frequency) electroacupuncture treatment group significantly increased in most cortical areas comparison between the manual acupuncture and 2 Hz (bipolar square wave 0.2 ms duration and 2 Hz frequency) electroacupuncture groups. In the brain stem, the optical density of NADPH-d-positive neuron at only superficial gray layer of the superior colliculus area was same as cerebral cortex. We conclude that the morphological evidence for NADPH-d-positive neurons may be have regional change in cerebral cortex brain stem and cerebellum according to various electroacupuncture stimulations.

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Antihypertensive Effect of Wild Mountain Ginseng Cultured Root Extract in Spontaneously Hypertensive Rats (Spontaneously Hypertensive Rats에 있어서 산삼배양근 추출물의 항고혈압 효과)

  • Yang, Deok-Chun;In, Jun-Gyo;Lee, Bum-Soo;Han, Seung-Ho;Kim, Eun-Jeong;Kim, Kil-Soo
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.6
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    • pp.1482-1486
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    • 2008
  • The antihypertensive effects of the Wild Mountain Ginseng Cultured Root Extract (WMGCE) were investigated in spontaneously hypertensive rats (SHR). Daily oral administration of the WMGCE (100 and 200 mg/kg) exhibited a significant decrease in blood pressure in SHR rats during for 8 weeks. The systolic blood pressure was dose- and time-dependently decreased significantly from the second weeks (p < 0.05) to the end of WMGCE treatment in SHR. The WMGCE decreased the plasma levels of sodium, potassium, chlorides, urea and osmolarity in SHR rats but no statistically significant change was observed. Furthermore, no significant changes were noted on heart weight, heart rate and diameter of aorta after WMGCE treatment in SHR. Our results suggest that daily oral administration of WMGCE at the dose of 100 and 200 mg/kg for 8 weeks exhibited antihypertensive activities.

Antihypertensive Effects of Amlodipine Besylate and Its New Salts (암로디핀의 베실레이트염과 신규 염들의 항고혈압작용 비교평가)

  • 이병호;서호원;김맹섭
    • Biomolecules & Therapeutics
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    • v.11 no.2
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    • pp.133-138
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    • 2003
  • The vascular relaxant and antihypertensive effects of newly developed salts of amlodipine-maleate and camsylate-were evaluated on isolated aorta from rats and in spontaneously hypertensive rats, and compared with those of amlodipine besylate, a standard drug. Amlodipine besylate concentration-dependently inhibited $Ca^{2+}$-induced contraction in depolarised rat aorta($IC_{50}$/: 4.17 nM), with a very slow onset of action. Amlodipine maleate and amlodipine camsylate also showed vascular relaxant effect with a pattern and a potency similar to those of amlodipine besylate($IC_{50}$/: 3.62 and 3.28 nM, respectively). Amloclipine besylate produced a dose-dependent and long-lasting(>10∼24h) antihypertensive effect with a slow onset of action (ED$_{20}$: 2.31 mg/kg) in spontaneously hypertensive rats. Amlodipine maleate and amlodipine camsylate also exerted antihypertensive effects with a pattern and a potency similar to those of amlodipine besylate(ED$_{20}$: 2.09 and 2.21 mg/kg, respectively). These results suggest that amlodipine maleate and amlodipine camsylate are not statistically differ with amlodipine besylate in relaxant effect of $Ca^{2+}$-induced contraction in depolarised rat aorta and in antihypertensive effect in spontaneously antihypertensive rats.

The Effects of electroacupuncture stimuli to the Doublecortin and PSA-NCAM positive cells in the Dentate Gyrus of spontaneously hypertensive rats (전침(電鍼)자극이 SHR 흰쥐의 Dentate Gyrus에서의 Doublecortin과 PSA-NCAM 양성 신경세포에 미치는 영향)

  • Woo, Hyun-su;Lee, Jae-dong;Kim, Chang-hwan
    • Journal of Acupuncture Research
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    • v.20 no.2
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    • pp.123-134
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    • 2003
  • Objective : This experimental in vitro study investigates the effects of electro acupuncture stimuli to the DCX and PSA-NCAM positive cells in the dentate gyrus of spontaneously hypertensive rats. Methods : We used immunohistochemical methods to observe the change of neuron cells, and then counts the immunoactive cells under the $100{\times}$ visual field optical microscope. Results : 1. The counts of DCX-positive cells in the dentate gyrus significantly increased in the 2Hz group versus control group. Otherwise 100Hz group did not have a significant differance. 2. The counts of PSA-NCAM-positive cells in the dentate gyrus rather decreased in the both 2Hz group and 100Hz group versus control group. Conclusions : We find out the electro acupuncture stimuli have some effects upon cerebral neuron cell in the dentate gyrus spontaneously hypertensive rats.

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Effect of Soybean Hydrolysate on Hypertension in Spontaneously Hypertensive Rats (대두 가수분해물에서 분리한 UF-peptide가 in vivo에서 자발성 고혈압 흰쥐의 혈압 강하에 미치는 영향)

  • 유리나;박수아;정대균;남희섭;신재익
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.25 no.6
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    • pp.1031-1036
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    • 1996
  • Effect of soybean hydrolysate prepared by ultrafiltration(UF-peptide) was evaluated regarding its action on blood pressure, selected biochemical changes in spontaneously hypertensive rats(SHR). Male SHR were divided into three groups and fed diet with 0, 3, 10% UF-peptide for 6 weeks. Development of hypertension was determined by tail cuff method during the experimental period. After the experimental period, angiotension I converting enzyme(ACE) activity in serum and vascular tissue, and lipids level in serum were measured. Spontaneous elevation of blood pressure was suppressed by the UF-peptide supplementation after two weeks of feeding. After five weeks of feeding the development of hypertension was significantly inhibited in the UF-peptide administered groups compared to the control. In addition, the UF-peptide was effective for lowering serum lipids level such as triglyceride and total cholesterol, as well as ameliorating some pathological changes in SHR.

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The Supplementary Effects of Harvesting Lentinus edodes at Different Times on Treating Blood Pressure and Serum Lipid Levels in Spontaneously Hypertensive Rats (채취 시기가 다른 표고버섯의 첨가가 SHR 흰쥐의 혈압 및 혈청 지질 수준에 미치는 영향)

  • 이성현;박홍주;조용식;조수묵;김미자
    • The Korean Journal of Community Living Science
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    • v.15 no.2
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    • pp.65-71
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    • 2004
  • Many studies have shown that Letinus edodes has some effect on reducing blood pressure and lipid levels of animals with high pressure and hyperlipidemia. The cost of Letinus edodes varies depending on when it is harvested, and yet there has been no data collected on the bio-functional effects of Letinus edodes harvested at different times. This study was conducted to investigate the supplementary effects of Letinus edodes harvested at different times on blood pressure and blood lipid levels of hypertensive rats. Three kinds of experimental diets - control (CO), early harvested Lentinus deodes (EL), and late harvested Lentinus edodes (LL) - were supplied to spontaneously hypertensive rats (SHR) for eight weeks. The diet intake, body weight, organ weight, and serum lipid levels were subsequently measured. No significant difference was observed in diet intake and in the respective weights of the body, liver, and epididymal fat pad among experimental groups. The levels of systolic and disastolic blood pressure were significantly lower in the LE and LL groups than those in the CO group; and the concentration of serum total cholesterol was also lower in the LE and LL groups than in the CO group. These results confirm that Lentinus edodes reduces blood pressure levels and serum total cholesterol concentration in spontaneously hypertensive rats. But the effects of Lentinus edodes did not differ significantly based on whether the Lentinus edodes was harvested early or late.

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Effects of Casein Hydrolysate on the Systolic Blood Pressure and Serum Lipid Profiles in Spontaneously Hypertensive Rats

  • Do, Jeong-Ryong;Back, Su-Yeon;Lim, Sang-Dong;Kim, Hyun-Ku;Sung, Ki-Seung;Han, Chan-Kyu
    • Food Science of Animal Resources
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    • v.30 no.4
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    • pp.545-550
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    • 2010
  • The effects of casein hydrolysate on blood pressure (BP) and serum lipid profiles were investigated in spontaneously hypertensive rats (SHR). Twenty-four 6-wk old male SHRs were assigned to 3 groups in a completely randomized design. Experimental groups were as follow: control, market milk group (MLG) and casein hydrolysate group (CHG). Reference blood pressure (RBP) showed average $198.94{\pm}1.46mmHg$. Blood pressure (BP) of CHG reduced 24 mmHg after 2 wk of treatment, but these increased after 3 wk. BP of CHG was significantly lower than BP of Control in experimental time (p<0.05). Serum lipid profiles were not differ significantly among groups (p<0.05). These data suggest that casein hydrolysate may beneficially improvement of blood pressure level in SHR.