Glucocorticoid-resistant asthma and novel anti-inflammatory drugs.
Synthetic glucocorticoids are among the most commonly used prescription medicines. Nevertheless, their clinical efficacy is accompanied by dose- and indication-limiting acute and chronic adverse effects. Intrinsic or acquired resistance to glucocorticoid actions may also limit clinical efficacy. In chronic inflammatory conditions there has been a considerable focus on understanding mechanism(s) of resistance in cells with a primary immune and/or inflammatory function. However, it has become increasingly accepted that a substantial part of the efficacy of glucocorticoid treatments derives from actions on 'structural' cell types (smooth muscle, fibroblasts, epithelia). In this article we review the mechanism of action of glucocorticoids on structural cells and contrast knowledge of resistance mechanisms between structural and inflammatory cell types, using asthma as an exemplar chronic inflammatory condition associated with glucocorticoid resistance.
Department of Pharmacology, University of Melbourne, Parkville, Victoria 3010, Australia.
Christine R
CR
Keenan
Saad
S
Salem
Ebony R
ER
Fietz
Rosa C
RC
Gualano
Alastair G
AG
Stewart
D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology / Q000627:therapeutic use*; D001249:Asthma / Q000188:drug therapy*; D004351:Drug Resistance; D005938:Glucocorticoids / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans
D000893:Anti-Inflammatory Agents; D005938:Glucocorticoids