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- 저자 : ( Woo-bin Soel ) (검색결과 1 건)
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( Hyun-ji Lee ),( Ha-nul Soe ),( Woo-bin Soel ),( Kyung-sun Soe ),( Jong-won Ju ),( Hae-sung Lee ),( Ung-bae Park ),( Min-suk Yu ),( Ji-hyun Lee ) 대한임상병리사협회 2013 조직세포검사학회 발표자료집 Vol.2013 No.-
Background The objective of this study was to evaluate whether 840 nm light-emitting diode (LED) could be effective in a noninvasive, therapeutic device for the treatment of monosodium iodoacetate-induced osteoarthritis in rats. Method Twenty male Sprague-Dawley rats weighing approximately 200 g each were divided into four groups: control group (C); monosodium iodoacetate-treated(MIA) group; monosodium iodoacetate-treated(MIA) group with LED phototherapy(MIA-LED); indomethacin-treated group(IMT). Osteoarthritis(OA) was induced by intra-articular injection of 50 μl of 3 mg MIA through the patellar ligament of the right knee. Control rats were injected with an equivalent volume of saline. In the MIA-LED group, the animal knees were exposed to LED stimulation at intervals of 15 min/day, for 1 weeks after MIA treatment. Animals were sacrificed at 2 weeks postoperatively. Knee joints were removed and fixed overnight in 10% neutral buffered formalin and subsequently decalcified by EDTA for 2 wk before being embedded in paraffin. Frontal sections (4 μm thick) of the medial aspect of the rat knee joints were prepared every 250 μm. The OA clinical score was monitored by knee movement and by radiographic analyses. Histologic analyses were performed following staining with hematoxylin and eosin, Safranin O-fast green, or toluidine blue, and histologic changes were scored according to a modified Mankin system. Results Radiographic examination showed no differences between the MIA-treated and the MIA-LED-treated rats. Sclerotic regions adjacent to the tibioepiphyseal margin, thinning of the epiphysis, and a small exophite were evident in the MIA-treated and the MIA-LED-treated rats, whereas tibioepiphyseal margin was well preserved in the IMT-treated rats compared with the two groups. Histologically, the lesion severity of knee joint by Mankin``s scoring showed not a significant difference between the MIA-treated and the MIA-LED-treated rats, however the lesion score was significantly decreased in the IMT rats compared with the two groups. Discussion The irradiation of LED at 840 nm after monosodium idoacetate treatment was no significant difference between the respective arthritis parameters in LED-treated group compared with indomethacin-treated group. However, the total Mankin score was significantly decreased in MIA-LED-treated group compared with monosodium iodoacetate-treated group. These results indicate that LED phototherapy was some beneficial influence on the repair of chondral lesion in osteoarthritis rats.
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