壓痛儀根據(jù)Randall-Selitto理論設(shè)計,是進(jìn)行壓爪實驗的經(jīng)典儀器。實驗時,將嚙齒類動物的爪置于圓柱形底座,操作員踩壓腳踏板,其上方的圓錐形推進(jìn)器往爪上施力。
壓痛儀根據(jù)Randall-Selitto理論設(shè)計,是進(jìn)行壓爪實驗的經(jīng)典儀器。實驗時,將嚙齒類動物的爪置于圓柱形底座,操作員踩壓腳踏板,其上方的圓錐形推進(jìn)器往爪上施力。
最大力值: |
750 g |
力增加速率: |
16 g/s (加一個砝碼時為16x2 g/s,加兩個砝碼時為16x3g/s) |
刻度分辨率: |
5 g(加一個砝碼時為5x2g,加兩個砝碼時為5x3g) |
電源要求: |
115或230V,50/60 Hz,最大15 W |
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特征 |
優(yōu)點 |
基于力學(xué)原理的壓力增強(qiáng)設(shè)計 |
持久可靠,不需校準(zhǔn) |
壓力增強(qiáng)范圍大 (0-750 g) |
可用于發(fā)炎和非發(fā)炎的爪 |
雙面壓力頭 (鈍、錐形) |
用于不同實驗 |
關(guān)于方法
· L.O. Randall and J.J. Selitto:“A Method for Measurement of Analgesic Activity on Inflamed Tissue”Arch. Int. Pharmacodyn. CXI, No. 4: 409-419,1957.
涉及壓痛儀(大鼠)
· K. Walker et alia: “The VR1 Antagonist Capsazepine Reverses Mechanical Hyperalgesia in Models of Inflammatory and Neuropathic Pain“J. Pharmacol. Exper. Therap.304, No. 1: 56-62,2003.
· S. Asfaha et alia: “Proteinase-Activated Receptor-1 Agonists attenuate nociception in Response to Noxious Stimuli“Br. J. Pharmacol.135: 1101-1106,2002.
· K.O. Aley et alia: “Chronic Hypersensitivity for Inflammatory Nociceptor sensitization Mediated by the ?Isozyme of Protein Kinase C“J. Neuroscience20 (12): 4680-4685,2000.
· O.A. Kochuvelikakam and J.D. Levine: “Role of Protein Kinase A in the Maintenance of Inflammatory Pain“J. Neuroscience.19(6): 2181-2186,1999.
涉及壓痛儀(小鼠)
· H. Saegusa et alia: “Suppression of Inflammatory and Neuropathic Pain Symptoms in Mice Lacking the N-type Ca2+Channel“The EMBO Journal.20, No. 10: 2349-2356,2001.
· W. Binder et alia: “Effect of Gender on Anti-Inflammatory and Analgesic Actions of Two К-Opioids“J. Pharmacol. Exper. Therap.292: 303-309,2000.
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