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Sensors 2012, 12(7), 9603-9612; doi:10.3390/s120709603
Article

Screening of Stepping Forces in an Arthritic Rat Model Using a Novel Analgesic Meter and Data Acquisition System

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Received: 15 June 2012 / Revised: 5 July 2012 / Accepted: 5 July 2012 / Published: 16 July 2012
(This article belongs to the Section Biosensors)
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Abstract

The stepping forces of normal and Freund Complete Adjuvant (FCA)-induced arthritic rats were studied in vivo using a proposed novel analgesic meter. An infrared charge-coupled device (CCD) camera and a data acquisition system were incorporated into the analgesic meter to determine and measure the weight of loads on the right hind paw before and after induction of arthritis by FCA injection into the paw cavity. FCA injection resulted in a significant reduction in the stepping force of the affected hind paw. The stepping force decreased to the minimum level on day 4 after the injection and then gradually increased up to day 25. Oral administration of prednisolone significantly increased the stepping forces of FCA-induced arthritic rats on days 14 and 21. These results suggest that the novel device is an effective tool for measuring the arthritic pain in in vivo studies even though walking is a dynamic condition.
Keywords: arthritis; analgesic meter; nociception; stepping force; load cells arthritis; analgesic meter; nociception; stepping force; load cells
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yam, M.F.; Ahmad, M.; Por, L.Y.; Ang, L.F.; Basir, R.; Asmawi, M.Z. Screening of Stepping Forces in an Arthritic Rat Model Using a Novel Analgesic Meter and Data Acquisition System. Sensors 2012, 12, 9603-9612.

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