Affiliation:
1. Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, 29–39 Brunswick Square, London WC1N 1AX, UK
Abstract
Abstract
The use of plant extracts to alleviate inflammatory diseases is centuries old and continues to this day. This review assesses the current understanding of the use of such plants and natural products isolated from them in terms of their action against the ubiquitous transcription factor, nuclear factor kappa B (NF-κB). As an activator of many pro-inflammatory cytokines and inflammatory processes the modulation of the NF-κB transduction pathway is a principal target to alleviate the symptoms of such diseases as arthritis, inflammatory bowel disease and asthma. Two pathways of NF-κB activation will first be summarised, leading to the Ikk (IkB kinase) complex, that subsequently initiates phosphorylation of the NF-κB inhibitory protein (IkB). Natural products and some extracts are reviewed and assessed for their activity and potency as NF-κB inhibitors. A large number of compounds are currently known as NF-κB modulators and include the isoprenoids, most notably kaurene diterpenoids and members of the sesquiterpene lactones class, several phenolics including curcumin and flavonoids such as silybin. Additional data on cellular toxicity are also highlighted as an exclusion principle for pursuing such compounds in clinical development. In addition, where enough data exists some conclusions on structure-activity relationship are provided.
Publisher
Oxford University Press (OUP)
Subject
Pharmaceutical Science,Pharmacology
Cited by
280 articles.
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