Prunella vulgaris seed oil alleviates cancer related fatigue through hypothalamic inflammation and CRH regulation

Cancer-related fatigue (CRF) is a common symptom in cancer patients, affecting their quality of life. Prunella vulgaris and its seed oil (PVSO) are edible-medicinal foods with bioactive compounds that may alleviate CRF. The present study aimed to test the effects of PVSO on CRF and underlying mechanisms. We found PVSO improved fatigue-like behaviors in both LPS-induced and tumor-bearing models. In the breast cancer tumor-bearing animals, PVSO reduced tumor growth, and suppressed serum and hypothalamic inflammatory cytokines (TNF-α, IL-1β, and IL-6) and NF-κB signaling. Furthermore, the hypothalamic corticotropin-releasing hormone (CRH) expression and serum CRH/cortisol levels dampened in tumor-bearing animals were normalized by PVSO. Our results suggest that PVSO exhibits potent anti-CRF effects likely via attenuation of cancer-induced hypothalamic inflammation and subsequent normalization of the dysregulated HPA axis. PVSO may be developed as a functional food for breast cancer-related fatigue.