JOURNAL ARTICLE

Homeopathic Rhus toxicodendron treatment increased the expression of cyclooxygenase-2 in primary cultured mouse chondrocytes

Yun Hyun Huh, Meong Ju Kim, Myeong Gu Yeo
Homeopathy: the Journal of the Faculty of Homeopathy 2013, 102 (4): 248-53
24050770

BACKGROUND: Rhus toxicodendron (Rhus tox) is a homeopathic remedy with anti-inflammatory activities used for arthritis pain.

METHODS: We studied the effects of 4×, 30×, 30c and 200c homeopathic dilutions of Rhus tox in primary cultured mouse chondrocytes. We examined the expression of collagen type II, a marker protein of chondrocytes, and cyclooxygenase-2 (COX-2), which is responsible for the biosynthesis of prostaglandin E2 (PGE2) and the regulation of the inflammatory response. We assessed the expression of collagen type II and COX-2 using biochemical and immunological methods, such as reverse transcription polymerase chain reaction (RT-PCR), quantitative (or real-time) RT-PCR (qRT-PCR) and immunoblot assays.

RESULTS: Stimulation with different concentrations of Rhus tox increased the mRNA expression of COX-2, and stimulation with 30× Rhus tox showed the most prominent mRNA expression in both RT-PCR and qRT-PCR analyses. We also observed that homeopathic dilutions of 4×, 30× and 30c Rhus tox inhibited collagen type II expression, suggesting that Rhus tox induced the dedifferentiation of chondrocytes. In addition, treatment with 30× Rhus tox significantly increased PGE2 release compared with other homeopathic dilutions of Rhus tox.

CONCLUSIONS: Taken together, these results suggest that homeopathic treatment with Rhus tox induced chondrocyte dedifferentiation and inflammatory responses, such as COX-2 expression and PGE2 production, in primary cultured chondrocytes.

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