Elemental diet inhibits pro‑inflammatory cytokine production in keratinocytes through the suppression of NF‑κB activation

Oncology Reports
Koji HaradaKatsuaki Mishima

Abstract

An elemental diet (ED) has been reported to reduce oral mucositis and dermatitis induced by chemotherapy. However, its molecular mechanism of action as an anti‑inflammatory agent is still unknown. The aim of the present study was to clarify whether ED confers its anti‑inflammatory action via reduction of pro‑inflammatory cytokine production in keratinocytes in vivo and in vitro. We evaluated the efficacy of ED in the treatment of 5‑fluorouracil (5‑FU)‑induced dermatitis of nude mice, and examined the expression of pro‑inflammatory cytokines such as tumor necrosis factor‑α (TNF‑α), interleukin (IL)‑1β and IL‑6 using immunohistochemistry. Moreover, we assessed the expression and production of these pro‑inflammatory cytokines by western blotting and ELISA assays, respectively, in immortalized human keratinocyte cell line, HaCaT. Furthermore, we investigated the effect of ED on a major inflammation‑related factor, nuclear transcription factor‑κB (NF‑κB), since it controls many genes involved in the inflammation pathway. Our results indicated that ED reduced the expression of TNF‑α, IL‑1β and IL‑6. It also inhibited the nuclear transition of p65 NF‑κB, which is known to regulate inflammatory cytokine expression in keratinocytes suff...Continue Reading

Related Concepts

Related Feeds

Anti-inflammatory Treatments

A drug or substance that reduces inflammation (redness, swelling, and pain) in the body. Anti-inflammatory agents block certain substances in the body that cause inflammation and swelling. Discover the latest research on anti-inflammatory treatments here