• 제목/요약/키워드: Animal pain model

검색결과 92건 처리시간 0.027초

Collagen-induced Arthritis Rat Model에서 염증성 통증에 대한 봉독약침의 진통효과 및 기전연구: 5HT-3 & Muscarinic Cholinergic Mechanisms에 대한 연구 (Antinociceptive Effect and the Mechanism of Bee Venom Pharmacopuncture on Inflammatory Pain in the Rat Model of Collagen-induced Arthritis: Mediation by 5HT-3 & Muscarinic Cholinergic Receptors)

  • 서병관;박동석;백용현
    • Journal of Acupuncture Research
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    • 제28권1호
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    • pp.37-44
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    • 2011
  • 배경 및 목적 : 봉독약침요법(bee venom pharmacopuncture, BVP)은 rheumatoid arthritis(RA)의 치료에 활용되고 있으나, RA로 인한 염증성 통증에 대한 봉독약침의 진통효과와 specific mechanism은 아직까지 명확하게 밝혀지지 않았다. 이에 본 연구에서는 RA animal model로서 collagen-induced arthritis(CIA) rat model에서 봉독약침의 a1-adrenergic, 5HT-3 그리고 muscarinic cholinergic mechanism을 확인하고자 한다. 방법 : CIA를 유도하기 위하여 male Sprague-Dawley rat에 freund's incomplete adjuvant에 유화(乳化)시킨 bovine type II collagen을 주입하고 14일 후 booster injection 시행하였다. 진통효과는 tail flick latency (TFL)로 평가하였다. 결과 : 관절염의 유도 이후 염증성 통증 역치는 시간이 지나면서 낮아지며, 5주 이후로는 통증 역치에 큰 변화가 없이 유지되었다. 첫 번째 immunization으로부터 5주 경과 후 족삼리($ST_{36}$)에 봉독약침처치(0.25 mg/ kg)를 시행하여 유의한 진통효과를 관찰하였다. 또한 봉독약침의 진통효과는 ondansetron(5HT-3 receptor antagonist, 0.5mg/kg, i.p.), atropine(muscarinic cholinergic receptor antagonist, 1mg/kg, i.p.)의 전처치에 의하여 억제되었으나, prazosin(a1-adrenergic receptor antagonist, 1mg/kg, i.p.)의 전처치에 의해서는 억제되지 않았다. 결론 : 봉독약침은 CIA로 인한 염증성 통증에 유의한 진통효과를 나타내며 그 analgesic mechanism은 5HT-3와 muscarinic cholinergic receptor에 의하여 매개되며 a1-adrenergic receptor에 의하여 매개되지는 않았다.

Effect of Electroacupuncture on AMPA Receptor GluR2 Subunit in Complete Freund's Adjuvant-induced Inflammatory Pain Model

  • Kim, Chul-Yun;Choi, Hye-Young;Yang, Yeun-Jin;Choi, Byung-Tae
    • 동의생리병리학회지
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    • 제25권5호
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    • pp.881-886
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    • 2011
  • AMPA receptor (AMPAR)s are heterotetrameric structures made up from 4 units (GluR1-4) and are thought to underlie perception of persistent inflammatory pain. Complete Freund's adjuvant (CFA)-evoked inflammation induces synaptic GluR2 internalization, which is initiated by GluR2 phosphorylation, in dorsal horn neurons during the maintenance of CFA-induced hypersensitivity. The present study investigated whether electroacupuncture (EA) stimulation has any effect on GluR2 trafficking by using immunoblot and immunohistochemistry. We examined that CFA-induced dorsal horn GluR2 internalization was attenuated by EA treatment. EA treatment could also decrease the level of pGluR2 regardless of whether CFA injection was administrated or not. In addition, previous studies suggest that microglial cells are increased without morphological change in CFA injected animal. In our study, increases in microglial cells in CFA group were observed, whereas EA with or without CFA-injected group showed similar aspects with normal group. In conclusion, our results indicate that EA might blunt CFA-evoked inflammation by coordinating mechanisms at the upstream step of neuron activation and GluR2 phosphorylation.

작약감초탕의 추출용매에 따른 성분 분석 및 항피로 효능 비교 (Comparison of Ingredient Quantities and Anti-Fatigue Effects of Jakyakgamcho-Tang according to Extraction Solvent)

  • 성윤영;육흥주;김동선
    • 대한본초학회지
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    • 제35권2호
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    • pp.31-38
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    • 2020
  • Objectives : Jakyakgamcho-tang has been used as analgesic and spasmolytic for muscle pain. It has reported to anti-diabetes, anti-inflammation, and neuro-protective effects. A clinical study of muscle fatigue and pain improvement effect of Jakyakgamcho-tang has been reported with increasing frequency of clinical use. However, the anti-fatigue effect of Jakyakgamcho-tang in animal model has not been studied. In this study, we compared anti-physical fatigue effects of water and 30% ethanol extract of Jakyakgamcho-tang. Methods : The amounts of components contained in water and 30% ethanol extract of Jakyakgamcho-tang were compared by ultra-performance liquid chromatography. Anti-physical fatigue effects were evaluated using weight-loaded forced swimming test. We also investigated the effects of Jakyakgamcho-tang on the change of fatigue parameters by blood biochemical analysis. Results : The relative amount of components of Jakyakgamcho-tang were about 19-53% higher in the 30% ethanol extract than in the water extract. In the swimming test, 30% ethanol extract showed a significantly greater anti-fatigue effects than conventional water extract of Jakyakgamcho-tang. The 30% ethanol extract of Jakyakgamcho-tang improved the exhausted swimming time (54%), and serum lactate dehydrogenase (48%) and lactic acid (60%) levels compared with water extract of Jakyakgamcho-tang. Conclusions : These results showed that differences in the amounts of components by different extraction were associated with differences of anti-fatigue effect of Jakyakgamcho-tang. Thus, the 30% ethanol extraction method could be applied to dose-reducing formulations of traditional herbal medicines.

봉독약침(蜂毒藥鍼)이 척수내(脊髓內) 통증관련(痛症關聯) 신경세포(神經細胞)의 활성(活性)에 미치는 영향(影響) (A Study on the Effects of Bee Venom Aqua-Acupuncture on Pain related Neuronal activity in the Spinal Cord)

  • 정선희;이재동;고형균;안병철;최도영;박동석
    • Journal of Acupuncture Research
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    • 제17권2호
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    • pp.153-168
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    • 2000
  • Introduction : In spite of the use of Bee Venom aqua-acupuncture in the clinics, the scientific evaluation on effects is not enough. Bee Venom aqua-acupuncture is used according to the stimulation of acupuncture point and the chemical effects of Bee Venom. The aims of this study is to investigate the analgegic effects of the Bee Venom aqua-acupuncture, through the change of writhing reflex and the change of c-fos in secondary neurons in the spinal cord. Materials and Methods : Pain animal model was used acetic acid method. The changes of writhing reflex of the mice which were derived pain by injecting acetic acid into the abdomen, after stimulating Bee Venom aqua-acupuncture on Chungwan(CV12) were measured. We used Fos immunohistochemical technique to study the neuronal activity in the spinal cord. Results : 1. Expression of c-fos in superficial dorsal horn(SDH), nucleus proprius(NP) and neck of dorsal hom(N) on 6~9th thoracic spine decreased significantly at $2.5{\times}10-4$g/kg Bee Venom aqua-acupuncture, compared with saline-acetic acid group. 2. The numeral change of Fos-LI neurons on the NP, N, and ventral gray(V) on 6-9th thoracic spine, SDH on 9-11th thoracic spine, and SDH and V on 11~13th thoracic spine decreased significantly at Chungwan(CV12) Bee Venom aqua-acupuncture, compared with saline-acetic acid group. 3. The correlation between the numbers of writhing refleax and Fos-LI neurons in T6-13 segment was statistically statistically significant at Chungwan(CV12) Bee Venom aqua-acupuncture. Conclusion : This study shows that the Bee Venom aqua-acupuncture on Chungwan(CV12) decreases the numbers of Fos-LI neurons. As the analgegic effects of Bee Venom aqua-acupuncture is recognized. Bee Venom aqua-acupuncture treatment is expected for pain modulation. In order to use it in many ways, more researches are needed for the dose and stability of Bee Venom aqua-acupuncture.

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Morphological Changes of Bones and Joints with Rheumatoid Arthritis and Osteoarthritis

  • Hong, Yun-Kyung;Javaregowda, Palaksha Kanive;Lee, Sang-Kil;Lee, Sang-Rae;Chang, Kyu-Tae;Hong, Yong-Geun
    • Reproductive and Developmental Biology
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    • 제35권2호
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    • pp.143-149
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    • 2011
  • Arthritis is a common disease in aged people, and is clinically divided into rheumatoid arthritis (RA) and osteoarthritis (OA). Although common symptoms such as pain are present, the underlying pathological mechanisms are slightly different. Therefore, the objectives of the present study were to compare joint damage induced by RA and OA by analyzing the major morphological and molecular differences, and to propose a suitable therapeutic intervention based on the pathophysiological conditions of bones and joints. For the RA animal model, 8-week-old DBA1/J mice were immunized with bovine type II collagen emulsified in complete Freund's adjuvant (CFA). Normal C57BL/6 mice (over 2 years of age) were used for OA. The clinical arthritis score was calculated using a subjective scoring system, and paw thicknesses were measured using calipers. The serum TNF ${\alpha}$ level was analyzed using an ELISA kit. Micro-CT was used to identify pathological characteristics and morphological changes. In collagen-induced RA mice, there were increased ankle joint volumes and clinical scores (p<0.01). The concentration of TNF ${\alpha}$ was significantly increased from 3 to 7 weeks after immunization. Micro-CT images showed trabecular bone destruction, pannus formation, and subchondral region destruction in RA mice. OA among aged mice showed narrowed joint spaces and breakdown of articular cartilage. This study suggests that a careful therapeutic intervention between RA and OA is required, and it should be based on morphological alteration of bone and joint.

청열조혈탕가미방(淸熱調血湯加味方)의 항혈전작용(抗血栓作用)에 대한 실험적(實驗的) 연구(硏究) (The Experimental Study on Anti-thrombotic Effect of Cheongyeoljohyeoltangkamibang (CYJHT))

  • 이귀희;임현정;신선미;유동열
    • 대한한방부인과학회지
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    • 제22권1호
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    • pp.79-94
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    • 2009
  • Purpose: This study was performed to evaluate anti-thrombotic effect of Cheongyeoljohyeoltangkamibang extract (CYJHT). Methods: Blood flow rate through the regular volume of glass tube after the blood was diluted five times with ACD soulution. Antithrombotic effect was calculated as a percentage of the experimental animal figure protected from the paralysis of hind legs or death of the mouse that is caused from the administration of platelet aggregation regent. Results: 1. CYJHT inhibited the platelet aggregation induced by ADP, epinephrine, collagen and arachidonic acid as compared with the control group. 2. CYJHT inhibited pulmonary embolism induced by collagen and epinephrine (inhibitory rate is 50%). 3. CYJHT increased platelet number and fibrinogen amount significantly and also CYJHT shortened PT and APTT significantly as compared with the control group in thrombus model induced by dextran. 4. CYJHT increased blood flow rate insignificantly as compared with the control group in vivo. Conclusion: These results suggest that CYJHT can be useful in treating various female diseases caused by thrombosis, such as menstrual pain, menstrual disorder and so on.

The Change of Bone Metabolism in Ovariectomized Rats : Analyses of MicroCT Scan and Biochemical Markers of Bone Turnover

  • Yoon, Kyung-Hyuk;Cho, Dae-Chul;Yu, Song-Hee;Kim, Kyoung-Tae;Jeon, Young-Hoon;Sung, Joo-Kyung
    • Journal of Korean Neurosurgical Society
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    • 제51권6호
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    • pp.323-327
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    • 2012
  • Objective : The purpose of this study was to verify the appropriateness of ovariectomized rats as the osteoporosis animal model. Methods : Twelve female Sprague-Dawley rats underwent a sham operation (the sham group) or bilateral ovariectomy [the ovariectomy (OVX) group]. Eight weeks after operations, serum biochemical markers of bone turnover were analyzed; osteocalcin and alkaline phosphatase, which are sensitive biochemical markers of bone formation, and C-terminal telopeptide fragment of type I collagen C-terminus (CTX), which is a sensitive biochemical marker of bone resorption. Bone histomorphometric parameters and microarchitectural properties of 4th lumbar vertebrae were determined by micro-computed tomographic (CT) scan. Results : The OVX group showed on average 75.4% higher osteocalcin and 72.5% higher CTX levels than the sham group, indicating increased bone turnover. Micro-CT analysis showed significantly lower bone mineral density (BMD) (p=0.005) and cortical BMD (p=0.021) in the OVX group. Furthermore, the OVX group was found to have a significantly lower trabecular bone volume fraction (p=0.002). Conclusion : Our results showed that bone turnover was significantly increased and bone mass was significantly decreased 8 weeks after ovariectomy in rats. Thus, we propose that the ovariectomized rat model be considered a reproducible and reliable model of osteoporosis.

봉독이 Papain으로 유도된 골관절염 동물 모델에 미치는 영향 (Effects of Bee Venom on Papain-induced Osteoarthritis in an Animal Model)

  • 안현진;이종기;박지현;김경현;이우람;박인영;한상미;이광길;박관규
    • 생약학회지
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    • 제43권2호
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    • pp.167-172
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    • 2012
  • Osteoarthritis (OA) is an age-related joint disease characterized by degradation of articular cartilage and its association with chronic pain. Purified Bee venom (PBV) has been traditionally used to the treatment for inflammatory diseases. The purpose of the current study is to examine whether PBV regulates the pro-inflammation against a mouse model of knee OA induced by papain. We studied the effect of PBV on papain-induced OA in the knee joints of mice. Mice were split into following groups: normal control, papain induced OA, OA treated with PBV, OA treated with meloxicam as positive control. Proteoglycan deposition was analyzed by safranin O-fast green staining and H&E staining. Papain injection significantly degraded the proteoglycan in OA mice at 42 days. Cartilage proteoglycan density was significantly higher in PBV treated OA group than those of the positive control groups. These results demonstrate that PBV efficiently suppresses pathological processes in an OA model. Thus, PBV could be a potential therapeutic strategy for the treatment of OA.

봉독약침(蜂毒藥鍼)이 Writhing reflex 및 척수내(脊髓內) 통증관련(痛症關聯) 신경세포(神經細胞)의 활성(活性)에 미치는 영향(影響) (A Study on the Effects of Bee Venom Aqua-Acupuncture on Writhing Reflex)

  • 정선희;고형균;박동석
    • 대한약침학회지
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    • 제3권1호
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    • pp.101-118
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    • 2000
  • Introduction : In spite of the use of Bee Venom aqua-acupuncture in the clinics, the scientific evaluation on effects is not enough. Bee Venom aqua-acupuncture is used according to the stimulation of acupuncture point and the chemical effects of Bee Venom. The aims of this study is to investigate the analgegic effects of the Bee Venom aqua-acupuncture, through the change of writhing reflex Materials and Methods : Pain animal model was used acetic acid method. The changes of writhing reflex of the mice which were derived pain by injecting acetic acid into the abdomen, after stimulating Bee Venom aqua-acupuncture on Chungwan($CV_{12}$) and non acupuncture point on the backside were measured. Results : 1. It showed that the writhing reflex were appeared on the groups which injected aceticacid only, and saline-acetic acid group(sample I), but not on the group bee venom-saline group(sample II). 2. The change of writhing reflex by Chungwan($CV_{12}$) Bee Venom aqua-acupuncture showed significant decrease in the order of Chungwan($CV_{12}$) Bee Venom aqua-acupuncture group III($2.5{\times}10^{-3}$g/kg), II($2.5{\times}10^{-4}$g/kg), and I($2.5{\times}10^{-5}$g/kg), compared with control group. There were significant decrease of number of writhing reflex in $5{\sim}10,\;10{\sim}15\;and\;15{\sim}20$ minutes intervals of Chung wan($CV_{12}$) Bee Venom aqua-acupuncture group I, and in $0{\sim}5,\;5{\sim}10,\;10{\sim}15\;and\;15{\sim}20$ minutes intervals of II and III, compared with control group. 3. The change of writhing reflex by non acupuncture point Bee Venom aqua-acupuncture showed significant decrease in the $0{\sim}5\;and\;5{\sim}10$ minutes intervals and the total number of writhing reflex in $2.5{\times}10^{-4}$g/kg group, compared with control group 4. The effects of writhing reflex of Chungwan($CV_{12}$) Bee Venom aqua-acupuncture group showed significant decrease, compared with non acupuncture point Bee Venom aqua-acupuncture group. Conclusion : This study shows that the Bee Venom aqua-acupuncture on Chungwan($CV_{12}$) decreases the numbers of writhing reflex. As the analgegic effects of Bee Venom aqua-acupuncture is recognized. Bee Venom aqua-acupuncture treatment is expected for pain modulation. In order to use it in many ways, more researches are needed for the dose and stability of Bee Venom aqua-acupuncture.

Balb/c 생쥐에 대한 어싱 매트리스에 의한 항염 효과 (Anti-inflammatory Effects of Earthing Mattress in Mouse)

  • 김지연
    • 동의생리병리학회지
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    • 제36권3호
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    • pp.89-93
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    • 2022
  • Earthing, caused by direct skin contact with the Earth's surface, is used to reduce the symptoms of inflammation (fever, fever, swelling and pain). However, there is little evidence to support the anti-inflammatory effects of earthing mattresses. Therefore, this study was conducted to investigate whether anti-inflammatory effect of earthing mattress using an in vivo animal model. The anti - inflammatory effect was evaluated by measuring ear thickness and foot volume in 12-O-tetradecanoylphorbol-13 acetate (TPA) - induced ear edema and carrageenan - induced paw edema model, respectively. Balb/c mouse in carrageenan paw edema model showed significant anti - inflammatory effect in the group treated with earthing mattress for 4 hours or 24 hours for 3 days. For females, the anti-inflammatory effect was greater when the earthing mattress was added to the mattress than the mattress alone treatment. From the above results, it was found that the female responds more to the effect of the earthing as well as the mattress effect. In addition, when the male and female Balb/c mice were exposed to mattresses and earthing mattresses for 24 h for 3 days, respectively, the mattress and earthing mattresses showed significant inhibition of IL (Interleukin)-1β levels compared to the control. In the TPA ear edema model, Balb/c mouse showed significant anti - inflammatory effect in the group treated with the earthing mattress for 4 hours or 24 hours for 3 days. Both males and females showed more anti-inflammatory effects when they were exposed to earthing mattresses with mattresses added to the mattresses. From the above results, it was found that both male and female respond to the effect of earthing as well as the mattress effect in the TPA ear edema model. In conclusion, in this study, we have verified that earthing mattress shows inhibitory effects on TPA and carrageenan-induced inflammation. From these results, it is suggested that the anti-inflammatory effect can be expected by applying the earthing mattress to patients suffering from inflammatory diseases. However, there is a need to pinpoint exactly how the earthing mattress relieves inflammation, and further research is needed to investigate the mechanism.