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首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Antinociceptive and anti-inflammatory effects of electroacupuncture on experimental arthritis of the rat temporomandibular joint
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Antinociceptive and anti-inflammatory effects of electroacupuncture on experimental arthritis of the rat temporomandibular joint

机译:电针对大鼠颞下颌关节实验性关节炎的镇痛和抗炎作用

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摘要

This study investigated the antinociceptive and anti-inflammatory effects of electroacupuncture (EA) on zymosaninduced acute arthritis of the rat temporomandibular joint (TMJ). Male Wistar rats were injected with saline or zymosan (control group; 2 mg) into the left TMJ. Low frequency EA (10 Hz, 30 min) was performed at acupoints (LI4, LI11, ST36, ST44) or sham points 2 h after or 1 h before zymosan administration. Mechanical hypernociception was accessed by the electronic Von Frey method after zymosan administration. Rats were sacrificed 6 h after zymosan administration and the joint was removed for histopathological analysis, myeloperoxidase activity assessment, vascular permeability observations, and immunohistochemical verification of inflammatory mediators. The results showed that EA inhibited zymosan-induced hypernociception, compared with the control group and with the sham group (p < 0.05). The results showed that EA inhibited inflammatory parameters such as neutrophil migration, vascular permeability, and tumour necrosis factor a (TNF-a), cyclooxygenase-2 (COX-2), and inducible nitric oxide synthase (iNOS) expression in the TMJ compared with the sham group (p < 0.05). Histopathological analysis showed that EA significantly inhibited edema and periarticular infiltration (p < 0.05) compared with the control and sham groups. EA at acupoints produced antinociceptive and anti-inflammatory effects on zymosan-induced arthritis in the rat TMJ.
机译:这项研究调查了电针(EA)对酵母聚糖诱导的大鼠颞下颌关节(TMJ)急性关节炎的镇痛和抗炎作用。向雄性Wistar大鼠的左侧TMJ注射盐水或酵母聚糖(对照组; 2 mg)。给予酵母多糖后2小时或之前1小时,在穴位(LI4,LI11,ST36,ST44)或假点进行低频EA(10 Hz,30分钟)。给予酵母聚糖后,通过电子冯·弗雷(Von Frey)方法获得了机械性痛觉过敏。给予酵母聚糖后6 h处死大鼠,取出关节进行组织病理学分析,髓过氧化物酶活性评估,血管通透性观察以及炎症介质的免疫组织化学验证。结果表明,与对照组和假手术组相比,EA抑制了酵母聚糖诱导的痛觉过敏(p <0.05)。结果表明,与EA相比,EA抑制了TMJ中炎症参数,如中性粒细胞迁移,血管通透性和肿瘤坏死因子a(TNF-a),环氧合酶2(COX-2)和诱导型一氧化氮合酶(iNOS)表达。假手术组(p <0.05)。组织病理学分析表明,与对照组和假手术组相比,EA显着抑制了水肿和关节周浸润(p <0.05)。穴位EA对大鼠TMJ的酵母聚糖诱导的关节炎具有镇痛和抗炎作用。

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