Effect of bushen tongluo decoction on the ERK/c-Fos signal transduction pathway in rats with bone cancer pain.

Bone cancer pain could lead to pain sensitization. Traditional Chinese Medicine could relieve bone cancer pain (BCP). This study aimed to investigate the analgesic effect of Bushen Tongluo decoction on rats with BCP and its impact on ERK/c-fos pathway in spinal dorsal horn. Cancer cells were injected to induce bone cancer pain rats. Inflammatory factors in serum were determined using enzyme-linked immunosorbent. ERK/c-Fos in the spinal dorsal horn were detected using western blotting and RT-qPCR. Thermal hyperalgesia and mechanical allodynia were observed in BCP rats. The ERK/c-Fos pathway activation was observed in the spinal dorsal horn and the expression of inflammatory cytokines increased in the serum. Bushen Tongluo decoction alleviated inflammatory cytokines and reduced the ERK/c-Fos pathway. We provided evidence that Bushen Tongluo decoction exhibits a potential and beneficial effect on inflammatory cytokines, effectively alleviating allodynia and hyperalgesia in rats with bone cancer. This effect may be attributed to down-regulation of the ERK/c-Fos pathway in spinal dorsal horn and serum inflammatory cytokines.