• Title/Summary/Keyword: SD-rat

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Studies on the Antiinflammatory Effects of Natural Products (천연물의 항염증작용에 관한 연구)

  • 유태무;이숙영;정수연;승상애;류항묵;양지선;이은방
    • Biomolecules & Therapeutics
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    • v.6 no.3
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    • pp.269-275
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    • 1998
  • These studies were conducted to investigate the antiinflammatory effects and the mechanism of action of natural products. We used the methods of "carrageenan induced foot edema" , "PAF (platelet activating factor) induced foot edema" , "inhibition test of vascular permeability" , "inhibition test of white blood cell migration" , "formation of granuloma" and "adjuvant induced arthritis" to examine the antiinflammatory erects of Angelica gigas, Ledebouriella seseloides, Ginkgo biloba and Bamboo salt (Jukyom). The oral administration of the water extract of Angelica gigantis radix, the methanolic extract of Ginkgo folium and the aqueous solution of Bamboo salt showed antiinflammatory effect on carrageenan and PAF induced foot edema in SD rat at a dose of 1 g/kg. The same administration of methanolic extract of Ginkgo folium also inhibited the vascular permeability in mice. The aqueous solution of Bamboo salt inhibited the formation of ganuloma in SD rats at a oral dose of 1 g/kg. Angelica gigantis radix seems to have antiinflammatory effect by inhibition of PAF.

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Effects of Hangbisan, an Oriental Medicine, on Body Weight Gain in Diet-Induced Obese (DID) rats

  • Chae, Myoung-Hee;No, Jin-Gu;Jhon, Deok-Young
    • Food Science and Biotechnology
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    • v.15 no.1
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    • pp.158-161
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    • 2006
  • This study was designed to determine possible weight loss effects of Hangbisan, an oriental medicine, on Sprague-Dawley (SD) rats. SD rats that were fed a high-fat diet for 6 weeks to induce obesity and subsequently fed with a basic diet containing 10%(w/w) Hangbisan or 10%(w/w) cellulose for 8 weeks. The Hangbisan fed rats demonstrated a significantly (p<0.05) reduced weight gain compared to the cellulose fed rats as well as a reduced level of plasma cholesterol and triglycerides and an increased level of (HDL)-cholesterol. These results suggest that dietary Hangbisan has an anti-obesity effect in the high-fat diet-induced obesity (DIG) rat and therefore a potential use as an anti-obesity agent in the application of oriental medicine compounds.

The Effects of Cynanchi wilfordii Radix Ethanol Extracts upon Irradiated Rat's Blood and Organ (백하수오 에탄올추출물이 방사선조사에 따른 흰쥐의 혈구 및 장기에 미치는 영향)

  • Kim, Jang-Oh;Choi, Jun-Hyeok;Shin, Ji-Hye;Jung, Do-Young;Min, Byung-In
    • Journal of radiological science and technology
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    • v.39 no.3
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    • pp.451-459
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    • 2016
  • The development of radioprotector is being actively conducted in order to reduce the damage from over radiation exposure at radiation accident or radiation therapy. So this study was confirmed for radiation protective effects using the Cynanchi wilfordii Radix that has been known to be effective for antioxidant activity, anti-cancer, immune enhancing effects. The method of this study was administered orally Cynanchi wilfordii Radix ethanol extracts to Sprague Dawley Rat(SD Rat) for 14 days once a day, while measuring changed blood cell, spleen index, liver and uterus tissue along the change in time of 1, 4, 7 and 21 days after X-ray beam of 7 Gy irradiation. As the result of the experiment, the experimental group's rats which are administered with Cynanchi Wilfordii Radix ethanol extracts showed a rapid recovery in white blood cell count(p < 0.05) and spleen index(p < 0.05). In addition, condensation of nuclei, cytoplasmic swelling, and inflammatory cell infiltration in experimental group's liver cell was decreased more than in irradiation group's component. Further, experimental group's Uterine gland decreased the apoptosis more than irradiation group's components did. It is expected that Cynanchi Wilfordii Radix extracts will be useful as a new radioprotector. With above in mind, this paper may provide appropriate implications with the field of emergency management such as radiation accident.

Inhibitory Effects of Naegwan-acupuncture($PC_6$) on Acute Reflux Esophagitis Rat (내관혈(內關穴) 자침(刺鍼)이 급성 역류성 식도염 백서(白鼠)에 미치는 영향)

  • Choi, Yi Jeong;Jung, Tae Young;Lim, Seong Chul
    • Journal of Acupuncture Research
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    • v.30 no.2
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    • pp.31-41
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    • 2013
  • Objectives : This study was to evaluate inhibitory effects of Naegwan-acupuncture($PC_6$) on acute RE(reflux esophigitis) rat induced by pylorus and forestomach ligation operation. Methods : Twenty seven SD rats were divided three groups (intact normal rat; RE control rat; RE control rat respectively stimulated by Naegwan point($PC_6$)). All rats was fasted for 18 h but free water, we induced RE by pylorus and forestomach ligation operation. Six hour after the operation, rats were sacrified, collected bloods in the abdominal vein, dissected a esophagus and stomach. The stomach was washed a 1 ml PBS to research gastric volume, pH, acidity and mucin release of gastric juice, esophagus was cut longitudinally and pictured a innter mucosa area to research damages in esophagus. The proinflammatory cytokine and chemokine including IFN-${\gamma}$, TNF-${\alpha}$, IL-$1{\beta}$, IL-6 and MCP-1 were analyzed by ELISA kit. Results : 1. Significantly, death rate of $PC_6$ acupuncture rat group was decreased compared to that of RE control group. 2. Gastric Volume, gastric injury and esophageal mucosa demage were decreased significantly, too. 3. Compared with RE, all of the proinflammatory cytokine and chemokine analyzed in serum of $PC_6$ were decreased remarkably. Especially, there were significant meanings TNF-${\alpha}$, IL-6 and MCP-1 in serum of $PC_6$ were decreased. Conclusion : The results suggest that antiinflammatory and protecting effects of PC6 could attenuate the severity of reflux esophagitis and prevent the esophageal mucosal damage, and validate its therapeutic use in esophageal reflux disease.

Healing Effect of 635 nm Laser Diode in Skin Injury (635nm 레이저다이오드의 피부 결손 치유 효과)

  • Cheon, Min-Woo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.21 no.7
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    • pp.674-678
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    • 2008
  • Low level laser therapy has various therapy effects. This paper performed the basic study for fabricating the low level laser therapy apparatus, and one of the goals of this paper was to make this apparatus used handily. The apparatus has been fabricated using the laser diode and microprocessor unit. The apparatus used a 635 nm laser diode for laser medical therapy and was designed for a pulse width modulation type to increase stimulation effects. In this study, the designed device was used to find out how 635 nm laser diode affected the skin injury of SD-Rat(Sprague-Dawley Rat). We divided the participants into two groups; irradiation group which was irradiated 10 minutes a day for 9 consecutive days, and none irradiation group. The results showed that the study group had lower incidence of inflammation and faster recovery, compared with the control group.

The Effect of Needle Electrode Electrical Stimulation on the Change of neuronal Nitric Oxide Synthase Immunoreactive Cells in the periaqueductal area of the Rat (침전극 저주파 자극이 흰쥐 중뇌수도주위 회색질의 nNOS 면역반응세포 변화에 미치는 영향)

  • Kim, Su-Han;Kim, Ji-Sung;Song, Chi-Won
    • Journal of Korean Physical Therapy Science
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    • v.10 no.2
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    • pp.193-198
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    • 2003
  • Acupuncture has been used as a clinical treatment in Oriental medicine for various diseases. In the present study was carried out to investigate the effects of acupuncture and electrical stimulation on the change neuronal nitric oxide synthase(nNOS) immunoreactive cells in the periaqueductal gray(PAG) area of the male SD rats. Enhanced expression of nNOS was detected in the dorsolateral-PAG(DL-PAG) area of rat with stress by fixed body, and acupuncture and needle electrode electrical stimulation groups at Hapgok like acupoint decreased the stress-induced enhancement in the expression of nNOS. The present results demonstrate that acupuncture and needle electrode electrical stimulation is effective in the modulation of expression of nNOS in the DL-PAG area under stress conditions.

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Effect of Maternal Selenium Nutrition on pulmonary Selenium, Glutathione Peroxidase, and Phospholipid Levels in Neonatal Rats

  • Kim, Hye-Yung
    • Journal of Nutrition and Health
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    • v.27 no.9
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    • pp.940-948
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    • 1994
  • The present study was designed to determine if prenatal and postnatal Se nutriture affects Se concentration, glutathione peroxidase(GSHPx) activity and phospholipid distribution of the neonatal rat lung. Female SD rats were bred and fed a semipurified Se-deficient(0.04ppm, Se-) or a Se-adequate(0.5ppm, Se+) diet through pregnancy and lactation. On d 2 of lactation, maternal dietary Se had no significant effect on pulmonary Se concentration of pups. On d 16 of lactation, mean milk Se concentration in Se- dams was significantly lower than that in Se+ dams. Milk Se concentration was reflected on lung Se concentration and GSHPx activity of d 16 pups, which were dramatically decreased in Se- pups. In addition, pulmonary disaturated phosphatidyl choline/total phosphatidyl choline ratio was also significantly decreased in Se- pups, implying impaired function of pulmonary surfactant. These data indicate that adequate Se nutrition is important in the maturation of neonatal rat lungs.

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Wound Recovery of Light Irradiation by White LED (백색 LED 조사의 상처 수복 효과)

  • Cheon, Min-Woo
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.24 no.1
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    • pp.42-46
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    • 2011
  • Light can be divided into ultraviolet rays, visible rays, and infrared rays depending on the wavelengths. Visible rays with specific wavelength are those predominantly used for would treatment. Especially low level laser irradiates into cells, effectively stimulating cellular tissues and activating cellular function. This study was intended to verify the effect of white LED irradiation therapy on wound recovery in animal tests by applying white LED irradiator, which was independently designed and developed to emit beams of similar wavelength to that of a laser. The designed LED Irradiator was used to find out how white LED light source affected the skin wound of SD-Rat(Sprague-Dawley Rat). We divided the participants into two groups; white LED irradiation group which was irradiated 1 hour a day for 9 consecutive days, and none irradiation group. The results showed that the study group had lower incidence of inflammation and faster recovery, compared with the control group.

Inhibition of C-terminal O-Methyltransferase by a Rat Liver Cytosolic Peptide

  • Park, Seung-Hee;Lee, Hyang-Woo
    • Archives of Pharmacal Research
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    • v.17 no.5
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    • pp.354-359
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    • 1994
  • The activity of SD-framesylcysteine O-methyltransferase was assayed by incubating the enzyrne with a synthetic in vitro substrate, [N-acetyl-S-trans, trns-famesyl-L-cysteine (AFC)], together with S-adenosyl-L-[emthyl-$_{14}$C)ester(AFCME)], was then analyzed either directly on HPLC or by converting the AFC[$methyl^{14}C$]ME to [$methyl^{14}C$] aclcohol by basehydrolysis. Employing these two analytical methods, it was established that a peptide purifed from rat liver cytosol fraction [Int. J. Biochem., 25, 1157 919930] strongly inhibited the above enzyme activity with $IC_{50}\; of\; 7.1\times 10^{-8}$ M. Also, the S-famesylcysteine O-methyltransferase from several human colon cancer cells was equally inhibited by the peptide.

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Hemopoietic Effects of Rhizoma Rehmanniae Preparata on Cyclophosphamide-Induced Pernicious Anemia in Rats (Cyclophosphamide로 Rat에 유도된 악성빈혈에 대한 숙지황의 증(蒸)수에 따른 치료효능에 관한 연구)

  • Ha, Chang-Su;Sung, Hyun-Jea;Zee, Ok-Pyo;Ma, Jin-Yeul
    • Korean Journal of Pharmacognosy
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    • v.31 no.3
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    • pp.325-334
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    • 2000
  • Rhizoma Rehmanniae Preparata is a Chinese herbal tonic. The hemopoietic effects of Rhizoma Rehmanniae Preparata(4-time steamed Jihwang, 4-time steamed double dose Jihwang, 8-time steamed Jihwang, 8-time steamed double dose Jihwang) were examined using in vitro rat(SD) model. Cyclophosphamide(150 mg/kg) was injected into experimental groups and control group to induce bone marrow suppression. Oral administration of Rhizoma Rehmanniae Preparata suppressed hormone levels of $T_4\;and\;T_3$. Reticulocyte count was increased by the bone marrow suppression.

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