测量实验性骨关节炎关节疼痛的定量方法——一氧化氮作用的证据。
文章的细节
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引用
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卡斯特罗RR,库尼亚FQ,席尔瓦FS Jr,罗恰FA
测量实验性骨关节炎关节疼痛的定量方法——一氧化氮作用的证据。
骨关节炎软骨。2006 Aug;14(8):769-76。Epub 2006 3月31日。
- PubMed ID
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16580848 (PubMed视图]
- 摘要
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目的:描述一种研究实验性骨关节炎(OA)关节疼痛的方法,并研究实验性骨关节炎中一氧化氮(NO)的参与情况。设计:大鼠右膝前交叉韧带横断(ACLT) (OA组),28 d进行评估。虚假组被错误操作,而天真组没有接受任何操作。通过记录行走时右后爪无法接触表面的时间来测量关节疼痛。测量关节渗出液中的细胞流入(CI)和亚硝酸盐水平。免疫染色检测滑膜诱导NO合成酶(iNOS)的表达。为了药理学操作的特定目的,各组接受吲哚美辛(2mg /kg/天s.c(皮下),美洛昔康(6mg /kg/天s.c),吗啡(200微克关节内),非选择性NOS抑制剂L-N(G)-硝基精氨酸甲酯(L-NAME;30mg /kg/bid i.p(腹膜内))或选择性iNOS抑制剂1400W (0.5 mg/kg/天s.c), ACLT前30分钟(预防性)或(治疗性)后4天给予,直到牺牲,在7天。未接受治疗的组分别收到了车辆。结果:与假手术组和对照组相比,OA组出现关节疼痛(P<0.05)。 Significantly increased nitrite levels and iNOS immunostaining were seen in the OA group. Both indomethacin and meloxicam inhibited joint pain (P<0.05). Morphine inhibited joint pain, whereas this effect was blocked by co-administration of the mu-opioid receptor naloxone. CI was similar among all groups. Prophylactic but not therapeutic L-NAME or 1400W reduced joint pain. CONCLUSION: We describe a method to quantitate joint pain associated to weight bearing in the ACLT model. The joint pain is sensitive to classical antinociceptive compounds. NO release is associated to joint pain though NOS inhibition does not inhibit ongoing pain.