• Title/Summary/Keyword: sprague-dawley rat

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Acute Toxicity of CJ-50001 (rG-CSF) in Rats and Dogs (CJ-50001 (rG-CSF)의 Rat 및 Dog에서의 급성독성)

  • 임동문;조효진;김달현;이현수;고형곤;김제학;김현수
    • Toxicological Research
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    • v.13 no.3
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    • pp.293-296
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    • 1997
  • The acute toxicity study of CJ-50001, a recombinant granulocyte-colony stimulating factor (rG-CSF), was performed in Sprague Dawley (SD) rats and beagle dogs. CJ-50001 was administered up to maximum dose 5,000 $\mu\textrm{g}$/kg (i.v.) and 10,000 $\mu\textrm{g}$/kg (p.o.) in SD rats and 5,000 $\mu\textrm{g}$/kg (i.v.) in beagle dogs. In these experiments, there were no death and harmful clinical changes which were related to CJ-50001. In conclusion, $LD_{50}$ of CJ-50001 is over 5,000 $\mu\textrm{g}$/kg, i.v. in SD rats and beagle dogs, and over 10,000 $\mu\textrm{g}$/kg, p.o. in SD rats.

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Single and Fractionated Irradiation of Mammary Tumor of Rat (백서 유방암의 단일 및 분할 조사시 방사선치료 효과)

  • Ha, Sung-Whan;Huh, Seung-Jae;Park, Charn-Il
    • Radiation Oncology Journal
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    • v.2 no.2
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    • pp.173-175
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    • 1984
  • The therapeutic effect of mammary breast cancer of rat (Sprague Dawley) was estimated by single and 5 fractionated irradiation of $Co^{60}-\gamma-ray$. Response rates over 50a were 20, 43, 67, $80\%$ respectively by single dose irradiation of 800, 1,200, 1,600, 2,000 rad, and 20,38, 57, $88\%$ by 5 fractionated irradiation of 1,400, 2,100, 2,800, 3,500 rad. $50\%$ tumor control dose$(TCD_{50})$ were 1,282rad, 2,312rad respectively with single and fractionated irradiation.

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Pain-relieving effects of acupuncture at different acupoints in rats (백서에서 서로 다른 경혈의 침 자극에 의한 통증의 억제 효과)

  • Lee, Bae-Hwan
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2009.05a
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    • pp.205-206
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    • 2009
  • To clarify the distinction between three difference acupoints, the effects of acupuncture on a behavioral performance were evaluated following formalin test. Male Sprague-Dawley rats were used. Each rat received a manual acupuncture at ST36 (zusanli), SP9 (yinlingquan) or BL60 (kunlun) acupoint before formalin injection. The flinching and licking responses were counted by two blinder investigators. The pretreatment of BL60 acupoint was showed significantly inhibition in flinch behavior as compared with control group. These results suggest that acupuncture at BL60 acupuncture may be effective in relieving inflammatory pain.

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The Effects of Ultrasound Irradiation on the Heat Shock Protein 70(HSP70) Expression in Rat Knee Articular Cartilage after Immobilization (흰쥐 슬관절 고정 후 초음파 적용이 관절연골내 HSP70의 발현에 미치는 영향)

  • Nam, Ki-Won
    • The Journal of Korean Physical Therapy
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    • v.17 no.3
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    • pp.369-376
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    • 2005
  • The purpose of the study was for investigating the effect of therapeutic ultrasound irradiation on HSP70 expression in knee of degraded rat articular cartilage. Knee of ten Sprague-Dawley male rats were immobilized for 4 weeks and divided at random into the control and continuous ultrasound applicated group. The continuous ultrasound applicated group was irradiated with frequency 1MHz, intensity $1W/cm^2$ for 5 minutes. The control group was sham sonication. The immunoreactivity of HSP70 was increased in degraded articular cartilage after untrasound irradiation. These results suggest that therapeutic ultrasound can enhance HSP70 expression in degraded articular cartilage.

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The effect of ${\omega}-3$ polyunsaturated fatty acids on serumlipid and cytokines of rats ((${\omega}-3$ 고도불포화지방산이 흰쥐의 혈청 지질과 cytokines에 미치는 영향)

  • Park, Chan-Hyun;Kim, Song-Chon
    • Journal of the Korean Applied Science and Technology
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    • v.16 no.1
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    • pp.45-57
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    • 1999
  • This study was designed to examine the effect of ${\omega}-3$ fatty acid, linlenic acid, EPA, DHA on serum lipid and cytokines of male rats(Sprague-Dawley). Animals of 3 groups were administrated perilla oil, salmoon oil, and tuna oil of 0.4 $m{\ell}/day$ for 8 weeks respectively. These oils were used for a source of linolenic acid, EPA and DHA. ${\omega}-3$ polyunsaturated fatty acid decreases significantly body weight, serum $PGE_2$ content and serum cytokines content of the rat, and increases internal organs weight, specially liver weight and serum HDL-cholesterol level of the rat. In the results, authors propose to use perilla oil for source of effective ${\omega}-3$ poly-unsaturated fatty acid(linolenic acid) to Prevent cardiovascular and immune diseases.

Effects of Fermented Milk on Rats Fed by Hypercholesterolemic Diet (유산균 발효유가 콜레스테롤을 투여한 백서(흰쥐)에 미치는 영향)

  • 임국환;김종규;한정희
    • Journal of Environmental Health Sciences
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    • v.19 no.1
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    • pp.77-89
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    • 1993
  • Effects of fermented milk were tested in Sprague-Dawley male rats. In six treatment 150 rats were fed for 12 months: (1) normal control synthetic pellets+water, (2) cholesterol control synthetic pellets containing 1% of cholesterol and 500, 000 IU of vitamin D2/100 g (cholesterol pellets) +water, (3) cholesterol pellets+25% fermented milk, (4) cholesterol pellets+50% fermented milk, (5) cholesterol pellets+75% fermented milk, (6) cholesterol pellets+100% fermented milk. In 3, 6, 9, 12 months, rats were sacrificed for analysis of samples. Rats received the fermented milk had significantly lower (p<0.05) serum cholesterol levels and higher ratios of HDL-cholesterol to total cholesterol than did the water fed rats. Stomach, heart, abdominal aorta and kidney of rat from fermented milk group showed slighter calcification or necrosis than did those of rat from cholesterol control group. Weight gain, diet intake, and drink consumption were significantly different among groups. Results indicate that fermented milk had a helpful effect of experimental hypercholesteremia and atherosclerosis.

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EFFECT OF INSULIN ADMINISTRATION ON THE COLLAGEN BIOSYNTHESIS IN INCISOR PULP AND GINGIVA OF RAT (Insulin 투여가 백서치수 및 치은의 Collagen 생합성에 미치는 영향)

  • Kim, Gwan-Shik
    • The Journal of the Korean dental association
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    • v.19 no.6 s.145
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    • pp.529-533
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    • 1981
  • The effect of insulin on the collagen metabolism in dental pulp and gingiva was studied using Sprague-Dawley rat and ³H-proline was injected intraperitoneally and then sacrificed according to predetermined schedule. Lower incisor pulp and gingiva were removed immediatedly and hydrolysed with acid. After digestion, proline and hydroxyproline were separated and analysed quantitatively employing thin-layer chromatography and radioactivity of each amino acid was counted by liquid scintillation counter. The label incorporated into lower incisor pulp and gingiva and radioactivity of ³H-hydroxyproline were increased in insulin administered group. And disappearance rate of ³H-hydroxyproline was decreased. Those results indicated that amino acid, I.e. proline transport and collagen biosynthesis were increased in dental pulp and gingiva by insulin administration.

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Morphological Changes in Glomerular Podocytes in Puromycin Aminonucleoside Induced Nephropathy (Puromycin Aminonucleoside 투여로 인한 사구체 족세포의 초미형태학적 변화)

  • Kim, Young-Ho;Park, Kwan-Kyu;Kim, Young-Man;Cho, Soo-Yeul
    • Applied Microscopy
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    • v.28 no.4
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    • pp.577-590
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    • 1998
  • Puromycin aminonucleoside (PAN) nephropathy was induced in a group of Sprague-Dawley rat by a single dose of intraperitoneal Injection to study an ultrastructural change of glomerulus. The experimental rats developed proteinuria three days after PAN injection. Electron microscopic studies of glomeruli showed the loss of epithelial foot processes, formation of cytoplasmic vacuoles, microvillous formation and increased numbers of lysosomes in the cytoplasm of podocytes. It is strongly suggested that proteinuria in PAN nephrosis may be primarily due to a glomerular epithelial lesion, leading to focal disarray of anionic sites or focal defects in the epithelial covering of the basement membrane. The loss of anionic sites in the basement membrane nay be caused by the foot process fusion and the epithelial detachment from the basement membrane.

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Effects of Benomyl and Lindane during late pregnancy in the rat

  • Moon, Hyun-Ju;Shin, Jae-Ho;Lee, Sujung;Kang, Il-Hyun;Kim, Tae-Sung;Hoon Bae;Ryu, Seung-Yeoul;Seok, Ji-Hyun;Ahn, Ji-Yeon
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2002.11b
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    • pp.165-165
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    • 2002
  • These experiments tested whether exposure to benomyl (BN) or lindane (LD) during late pregnancy affect the development of reproductive tract in adult offspring. Timed pregnant Sprague Dawley rats (N=7∼8/treatment) were gavaged with LD (1, 5, or 10 mg/kg), BN (50, 250, or 500 mg/kg), or com oil on gestation days 15∼19.(omitted)

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