Study on function and mechanism of analgesic effects of herbal medicine extraction on bone cancer pain / 国际中医中药杂志

ABSTRACT

Objective To evaluate the analgesic effects of herbal medicine extraction on bone cancer pain of rat models. Methods Rat models of cancer-induced bone pain was established by using the MRMT-1 cell line injected into the tibia. Changes of behavioral signs indicative of pain including 50% paw withdrawal threshold (von Frey tactile sensitivity test)and thermal withdrawal latency were observed. The cellular reorganization of dorsal root ganglion (DRG) was measured by histological analysis. Results In the behavioural tests, herbal medicine treatment attenuated mechanical allodynia and thermal hyperalgesia. Histological examination showed that herbal medicine inhibited DRG neuronal nuclear and somatic size reduction with nucleolar segregation. Conclusion The herbal medicine extraction was an anti-nociceptive agent in rat models of bone cancer pain.