• 제목/요약/키워드: formalin-induced pain

검색결과 87건 처리시간 0.022초

족삼리(足三里) 봉독약침자극(蜂毒藥鍼刺戟)이 척수내(脊髓內) Fos 양성반응(陽性反應) 신경세포(神經細胞)의 활성(活性)에 미치는 영향(影響) (The Effect of Bee Venom Acupuncture into Chok-samni (ST36) on Neuronal Activity in the Spinal Cord)

  • 임윤경;강성길;최도영
    • 대한약침학회지
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    • 제3권1호
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    • pp.141-155
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    • 2000
  • This study was designed to evaluate the analgesic effect of bee venom (BV) Acupuncture into different treatment points, Chok-samni (ST36) and blank loci of the gluteal muscle and back. We investigated neuronal activity in the spinal cord using the Fos immunohistochemical technique according to the pretreatment with different concentrations of BV, thirty minutes before the formalin injection. The results were summarized as follows: 1. The number of Fos-like immunoreactive (Fos-LI) neurons in L2 segment of the saline-formalin treated group was significantly increased in NECK and VENT of the spinal cord as compared with that of the room control group. However, there was no significant change in the number of the Fos-LI neurons in L2 segment of the BV-formalin treated group as compared with that of the room control group. 2. The number of Fos-LI neurons in L3-5 segment of the saline-formalin group was significantly increased in all the regions of 142 the spinal cord as compared with that of the room control group. However, the Fos-LI neurons in L3-5 segment of the BV-formalin treated group was dramatically decreased in all the regions of the spinal cord as compared with that of the saline-formalin group. Therefore, these results indicated that the BV acupuncture suppressed the nociceptive neuronal activities in L3-5 of the spinal cord induced by formalin injection. 3. There was a strong positive correlation between the formalin-induced pain behavior and the number of the Fos-LI neurons in L3-5 segment.

Ginsenosides Attenuate Formalin-Induced Pains Through Spinal and Supraspinal Sites

  • Yoon, So-Rah;Park, Seok;Jung, Se-Yeon;Kim, Seok-Chang;Ko, Sung-Ryong;Nam, Ki-Yeul;Nah, Seung-Yeol
    • Journal of Ginseng Research
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    • 제24권3호
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    • pp.143-147
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    • 2000
  • 앞의 연구에서 우리는 진세노사이드 Rc, Rd, Re 및 Rr를 복강내 전 처리할 경우 포르말린으로 유도된 통증을 억제하다는 것을 보고하였다 그러나 이러한 진세노사이드가 어느 위치에서 항통증작용을 발휘하는가에 대하여서는 아직 알려지지 않고 있다. 본 연구에서는 이들 진세노사이드를 뇌실내, 척수강내 혹은 피하내 전처리한 다음 포르밀린에 의하여 유도되는 통증이 어느 위치에서 억제되는가를 연구하였다. 연구 결과 이들 진세노사이드는 척수강내 전처리할 경우 포르말린에 의하여 유도되는 통증을 억제하는 것으로 나타났다. 급성 통증 phase에서 ED$_{50}$는 Rc가 1.0 (0.SS~l.75mg/kg)이었고, Rd가 1.15 (0.6~2.25 mg/kg)이었고, Re가 8.9(3.9~20.5 mg/kg)이었다. 지속성 통증 phase에서 ED$_{50}$는 Rc가0.3 (0.1~0.85 mg/kg)이었고, Rd가 0.6 (0.35~l.1 mg/kg)이었고, Re가 2.45 (1.2s~4.65 mg/kg)이었고, Rf가 1.9(1.5~4.25 mg/kg)인 것으로 나타났다. 또한 뇌실내 전처리할 경우에도 이들 진세노사이드들은 포르말린에 의하여 유도되는 통증을 억제하였다. 급성통증 phase에서 ED$_{50}$는 Rc가 0.9 (0.55~l.4 mg/kg)이었고, Rd가0.9 (0.45~l.7 mg/kg)이었고, Re가 0.93 (0.Sol.75 mg/kg), Rf가1.85 (0.95~3.5 mg/kg)인 것으로 나타났다. 지속성 통증 phase에서는 ED$_{50}$는 Rc가 0.7 (0.45~l.05 mg/kg)이었고, Rd가 1.25(0.7~2.2 mg/kg)이었고, Re가 0.85 (0.45~l.6 mg/kg)이었고, H의 경우에는 0.8 (0.4~l.45 mg/kg) 이었다. 항통증 효능 potency는 두 가지 투여 경로에 있어서 Rc$\geq$Rd>Re>Rf인 것으로 나타났다. 그러나, 피하내 주사는 포르말린에 의하여 유도되는 통증을 억제하지 않은 것으로 나타났다. 이러한 연구 결과는 진세노사이드에 의한 항통증 작용은 척수 수준 및 척수위 수준에서 이루어진다는 것을 보여주고 있다.보여주고 있다.

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Anti-nociceptive and Anti-inflammatory Properties of Ilex latifolia and its Active Component, 3,5-Di-caffeoyl Quinic Acid Methyl Ester

  • Kim, Joo Youn;Lee, Hong Kyu;Seong, Yeon Hee
    • Natural Product Sciences
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    • 제25권1호
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    • pp.64-71
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    • 2019
  • The present study was conducted to investigate anti-nociceptive and anti-inflammatory effects of the leaves of Ilex latifolia Thunb (I. latifolia) in in vivo and in vitro. Writhing responses induced by acetic acid and formalin- and thermal stimuli (tail flick and hot plate tests)-induced pain responses for nociception were evaluated in mice. I. latifolia (50 - 200 mg/kg, p.o.) and ibuprofen (100 mg/kg, p.o.), a positive non-steroidal anti-inflammatory drug (NSAID), inhibited the acetic acid-induced writhing response and the second phase response (peripheral inflammatory response) in the formalin test, but did not protect against thermal nociception and the first phase response (central response) in the formalin test. These results show that I. latifolia has a significant anti-nociceptive effect that appears to be peripheral, but not central. Additionally, I. latifolia (50 and $100{\mu}g/mL$) and 3,5-di-caffeoyl quinic acid methyl ester ($5{\mu}M$) isolated from I. latifolia as an active compound significantly inhibited LPS-induced NO production and mRNA expression of the pro-inflammatory mediators, iNOS and COX-2, and the pro-inflammatory cytokines, IL-6 and $IL-1{\beta}$, in RAW 264.7 macrophages. These results suggest that I. latifolia can produce antinociceptive effects peripherally, but not centrally, via anti-inflammatory activity and supports a possible use of I. latifolia to treat pain and inflammation.

Evaluation of the antinociceptive effects of a selection of triazine derivatives in mice

  • Hajhashemi, Valiollah;Khodarahmi, Ghadamali;Asadi, Parvin;Rajabi, Hamed
    • The Korean Journal of Pain
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    • 제35권4호
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    • pp.440-446
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    • 2022
  • Background: The authors showed in a previous study that some novel triazine derivatives had an anti-inflammatory effect. The present study was designed to evaluate the antinociceptive effect of five out of nine compounds including two vanillintriazine (5c and 5d) and three phenylpyrazole-triazine (10a, 10b, 10e) derivatives which showed the best anti-inflammatory effect. Methods: Male Swiss mice (25-30 g) were used. To assess the antinociceptive effect, acetic acid-writhing, formalin, and hot plate tests were used after intraperitoneal injection of each compound. Results: All compounds significantly (P < 0.001) reduced acetic acid-induced writhing at tested doses (50, 100, and 200 mg/kg). Also, the percent inhibition of writhing in the acetic acid test showed that at the maximum tested dose of these compounds (200 mg/kg), the order of potencies is as follows: 10b > 10a > 10e > 5d > 5c. In the formalin test, compounds 5d, 10a, and 10e showed an antinociceptive effect in the acute phase and all compounds were effective in the chronic phase. In the hot plate test, compounds 5c, 5d, and 10a demonstrated an antinociceptive effect. Conclusions: The results clearly showed that both vanillin-triazine and phenylpyrazole-triazine derivatives had an antinociceptive effect. Also, some compounds which showed activity in the early phase of formalin test as well as in the hot plate test could control acute pain in addition to chronic or inflammatory pain.

Anti-nociceptive and anti-inflammatory activities of the essential oil isolated from Cupressus arizonica Greene fruits

  • Fakhri, Sajad;Jafarian, Safoora;Majnooni, Mohammad Bagher;Farzaei, Mohammad Hosein;Mohammadi-Noori, Ehsan;Khan, Haroon
    • The Korean Journal of Pain
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    • 제35권1호
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    • pp.33-42
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    • 2022
  • Background: Cupressus arizonica Greene is a coniferous tree with great importance in fragrance and pharmaceutical industries. Essential oils from C. arizonica (EC) have shown potential antioxidant, and anti-microbial activities. This study aimed at investigating the anti-nociceptive and anti-inflammatory effects/mechanisms of EC. Methods: The EC was evaluated for anti-nociceptive and anti-inflammatory activities on male Wistar rats using a formalin test and carrageenan-induced paw edema, respectively. Also, we pre-treated some of the animals with naloxone and flumazenil in the formalin test to find out the possible contributions of opioid and benzodiazepine receptors to EC anti-nociceptive effects. Finally, gas chromatography/mass spectrometry (GC/MS) analysis was used to identify the EC's constituents. Results: EC in intraperitoneal doses of 0.5 and 1 g/kg significantly decrease the nociceptive responses in both early and late phases of the formalin test. From a mechanistic point of view, flumazenil administration 20 minutes before the most effective dose of EC (1 g/kg) showed a meaningful reduction in the associated anti-nociceptive responses during the early and late phases of the formalin test. Naloxone also reduced the anti-nociceptive role of EC in the late phase. Furthermore, EC at the doses of 1, 0.5, and 0.25 g/kg significantly reduced paw edema from 0.5 hours after carrageenan injection to 4 hours. GC/MS analysis showed that isolated EC is a monoterpene-rich oil with the major presence of α-pinene (71.92%), myrcene (6.37%), δ-3-carene (4.68%), β-pinene (3.71%), and limonene (3.34%). Conclusions: EC showed potent anti-nociceptive and anti-inflammatory activities with the relative involvement of opioid and benzodiazepine receptors.

포르말린으로 유도된 통증 유발 쥐에서 무침주입기를 이용한 봉독약침의 진통효과 (Comparative Study of Therapeutic Effect of Needle-free Bee Venom Aqua-acupuncture (BVA) into Zusanli (ST36) in the Rat Formalin Test)

  • 정인재;함대현;정우병;한지희;채윤병;임형수;이혜정;강성길;김장현
    • 동의생리병리학회지
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    • 제20권2호
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    • pp.365-371
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    • 2006
  • Bee Venom aqua-acupuncture (BVA) simultaneously exerts pharmacological effects of biologically active compounds, existed in the whole bee venom, and medicinal effect of the stimulation of acupuncture points. BVA has been considered as a promising therapeutic method for treating various chronic diseases, mainly accompanying severe pain and inflammation. As a painless injection device, jet injectors have been commercially marketed for various clinical applications including insulin injection and vaccination. Among them, a pressure-driven jet injector system could be used for intradermal delivery of a variety of drugs. The aim of this study was to investigate the analgesic effects of the BVA using a needle-free injector (Biojector $2000^{\circledR}$, Bioject Inc., OR, USA), compared to the conventional BV aqua-acupuncture using a typical syringe. Adult Sprague-Dawley rats were injected with bee venom $(0.08mg/kg,\;50{\mu}l)$ using Biojector $2000^{\circledR}$ (BVA-B) or a syringe (BVA-5) into the Zusanli (ST36) acupoint, 30 minutes before plantar injection of 2% formalin. It was found that BVA-B-, or BVA-5-treated rats, compared to controls, exhibited significantly less licking behavior during the late phase in the rat formalin test, when compared to controls. During early phase, however, those effects were not significant but substantial. The analgesic effect of BVA-B was also compatible with that of the conventional BVA-5. In the immunohistochemical studies, BVA-B significantly suppressed the expression of formalin-evoked c-fos, a biomarker of neuronal activity, in the lumbar dorsal horn of the spinal cord. These results indicated that BVA-B waseffective in the modulation of pain in the rat formalin test, compared to BVA-5. Taken together, the needle-free jet injector system could be substituted for the conventional aqua- acupuncture with the advantage of little pain.

High dose of QX-314 produces anti-nociceptive effect without capsaicin in rats with inflammatory TMJ pain

  • Yang, Kui-Ye;Kim, Min-Su;Kim, Eun-Kyung;Kong, Mi-Sun;Ahn, Jong-Soo;Lee, Jong-Hun;Ju, Jin-Sook;Ahn, Dong-Kuk
    • International Journal of Oral Biology
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    • 제38권4호
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    • pp.135-140
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    • 2013
  • 이상의 실험 결과들을 요약하면, 포르말린을 측두하악관절 내로 주입하여 발생한 염증성 통증 행위반응은 QX-314의 투여로 감소할 수 있었다. 저농도의 QX-314의 진통작용은 TRPV1 통로를 이용하여 세포막 내로 이동하여 작용이 나타났으며 고농도의 QX-314는 TRPV1 통로와 무관하게 진통작용을 나타내었다. 이와 같은 결과는 측두하악관절 장애로 인해 발생되는 염증성 통증에 QX-314가 효과적인 치료제로 사용할 수 있다는 것을 말해주며, 특히 고농도의 QX-314가 세포막을 이동하는 경로에 대한 연구가 더 진행된다면 임상에서 QX-314가 진통제로서 사용할 수 있는 계기가 될 것으로 판단된다.

Participation of Opioid Pathway in the Central Antinociceptive Effects of Eugenol

  • Kang, Song-hee;Kang, Sa-won;Kim, Jae-ho;Kim, Hee-young;Ryu, Hyeon-seo;Bae, So-yeon;Oh, Ju-ae;Lee, Jun-hyuk;Hyun, Ji-hee;Ahn, Dong Kuk
    • International Journal of Oral Biology
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    • 제43권3호
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    • pp.147-153
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    • 2018
  • The aim of the present study was to evaluate the central antinociceptive effects of eugenol after intraperitoneal administration. Experiments were carried out using male Sprague-Dawley rats. Subcutaneous injection of 5% formalin-induced nociceptive behavioral responses was used as the pain model. Subcutaneous injection of 5% formalin significantly produced nociceptive responses by increasing the licking time during nociceptive behavior. Subsequent intraperitoneal injection of 100 mg/kg of eugenol led to a significant decrease in the licking time. However, low dose of eugenol (50 mg/kg) did not affect the nociceptive behavioral responses produced by subcutaneous injection of formalin. Intrathecal injection of $30{\mu}g$ of naloxone, an opioid receptor antagonist, significantly blocked antinociceptive effects produced by intraperitoneal injection of eugenol. Neither intrathecal injection of methysergide ($30{\mu}g$), a serotonin receptor antagonist nor phentolamine ($30{\mu}g$), an ${\alpha}-adrenergic$ receptor antagonist influenced antinociceptive effects of eugenol, as compared to the vehicle treatment. These results suggest that central opioid pathway participates in mediating the antinociceptive effects of eugenol.

Analgesic and anti-inflammatory effects of galangin: a potential pathway to inhibit transient receptor potential vanilloid 1 receptor activation

  • Kaiwen Lin;Datian Fu;Zhongtao Wang;Xueer Zhang;Canyang Zhu
    • The Korean Journal of Pain
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    • 제37권2호
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    • pp.151-163
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    • 2024
  • Background: Galangin, commonly employed in traditional Chinese medicine for its diverse medicinal properties, exhibits potential in treating inflammatory pain. Nevertheless, its mechanism of action remains unclear. Methods: Mice were randomly divided into 4 groups for 7 days: a normal control group, a galangin-treated (25 and 50 mg/kg), and a positive control celecoxib (20 mg/kg). Analgesic and anti-inflammatory effects were evaluated using a hot plate test, acetic acid-induced writhing test, acetic acid-induced vascular permeability test, formalin-induced paw licking test, and carrageenan-induced paw swelling test. The interplay between galangin, transient receptor potential vanilloid 1 (TRPV1), NF-κB, COX-2, and TNF-α proteins was evaluated via molecular docking. COX-2, PGE2, IL-1β, IL-6, and TNF-α levels in serum were measured using ELISA after capsaicin administration (200 nmol/L). TRPV1 expression in the dorsal root ganglion was analyzed by Western blot. The quantities of substance P (SP) and calcitonin gene-related peptide (CGRP) were assessed using qPCR. Results: Galangin reduced hot plate-induced licking latency, acetic acid-induced contortions, carrageenan-triggered foot inflammation, and capillary permeability in mice. It exhibited favorable affinity towards TRPV1, NF-κB, COX-2, and TNF-α, resulting in decreased levels of COX-2, PGE2, IL-1β, IL-6, and TNF-α in serum following capsaicin stimulation. Galangin effectively suppressed the upregulation of TRPV1 protein and associated receptor neuropeptides CGRP and SP mRNA, while concurrently inhibiting the expression of NF-κB, TNF-α, COX-2, and PGE2 mRNA. Conclusions: Galangin exerts its anti-inflammatory pain effects by inhibiting TRPV1 activation and regulating COX-2, NF-κB/TNF-α expression, providing evidence for the use of galangin in the management of inflammatory pain.

심부통증이 흰쥐 중뇌에 미치는 c-Fos 면역반응성의 변화와 아스피린의 효과 (Changes of c-Fos Immunoreactivity in Midbrain by Deep Pain and Effects of Aspirin)

  • 정진아;유기수;황규근
    • Clinical and Experimental Pediatrics
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    • 제46권7호
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    • pp.695-701
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    • 2003
  • 목 적 : 근육과 관절 등에서 유발된 심부통증(deep pain)이 척수상위로 전달되는 신경로에 대해서는 아직 잘 알려져 있지 않다. 그러나 최근 일부 연구자들은 피부에서 유발된 천부통증(superficial pain)과는 달리 중뇌의 PAG에 위치한 신경원에 침해 자극이 전달되어 자율신경계와 행동양식에 영향을 줄 것이라는 가설을 보고하였다. 또한, 비스테로이드성의 항염증성 약품들은 말초조직에서 프로스타글란딘 합성을 방해하여 진통효과를 유발시킨다고 알려져 왔으나 최근에는 척수와 뇌간에서도 진통효과가 있을 것이라고 추측하고 있다. 그러므로 이 연구자는 포르말린으로 체성 심부통증을 유발시켜 중뇌의 어느 부위에서 신경세포가 활성화되는지를 c-Fos 단백의 발현으로 확인하고 또한 비스테로이드성의 항염증성 약품인 아스피린의 효과를 알아보고자 이 연구를 시도하게 되었다. 방 법 : 실험 I군에서는 생리식염수를 흰쥐 꼬리에 미리 피하주사한 뒤 포르말린을 이용해 체성 심부통증을 유발시켰고, 실험 II군은 아스피린을 주사한 후 포르말린으로 체성 심부통증을 유발시켰다. 정상군에서는 통증자극을 주지 않았다. 실험 I군과 실험 II군의 흰쥐는 통증을 유발 시킨 뒤 30분, 1, 2, 6, 24시간에 희생시켜 뇌를 적출하여 뇌절편을 만들었다. 뇌절편으로 냉동 연속조직절편을 제작하여 면역조직화학적 방법으로 c-Fos 단백의 출현여부를 확인하였다. Interaural 1.00-1.36 mm를 통과하는 관상 뇌절편의 연속조직표본에서 나타난 양성면역반응성을 토대로 중뇌의 VLPAG와 DMPAG를 관찰하였고, 단위면적($0.2mm^2$)당 면역양성반응을 보인 신경세포를 계수하고 통계 처리하였다. 결 과 : c-Fos 양성면역반응 신경세포 수는 DMPAG에서 보다 VLPAG에서 현저하게 많았다. DMPAG와 VLPAG에서 통증유발 2시간 후 c-Fos 양성면역반응 신경세포 수는 최고치에 도달하였다. 아스피린을 투여한 군의 c-Fos 양성면역반응 신경세포 수는 투여하지 않은 군보다 전시기에 걸쳐 적었다. 결 론 : 이 연구결과는 포르말린에 의해 유발된 체성 심부통증의 기전과 아스피린의 효과를 이해하는데 기초적인 자료로 이용될 수 있을 것으로 생각된다.