PMID- 26293997 OWN - NLM STAT- MEDLINE DCOM- 20151125 LR - 20161025 IS - 1941-9260 (Electronic) IS - 0032-5481 (Linking) VI - 127 IP - 7 DP - 2015 TI - Bronchodilators, receptors and cross-talk: Together is better? PG - 771-80 LID - 10.1080/00325481.2015.1080589 [doi] AB - The most widely used maintenance therapies in chronic obstructive pulmonary disease (COPD) are long-acting muscarinic antagonists (LAMAs), and a number of these drugs are now available in combination with long-acting beta2-agonists (LABAs). LAMAs inhibit the parasympathetic muscarinic pathway, while LABAs, as sympathomimetics, reduce airway smooth muscle (ASM) tone. As well as directly controlling the constriction and relaxation of ASM, muscarinic and adrenergic receptors are found on inflammatory cells, and drugs that target these receptors may also reduce inflammation in COPD. Evidence suggests that the muscarinic and adrenergic pathways cross-talk at the level of neuronal input to the ASM via second-messenger pathways within ASM cells. Although the cross-talk is not completely understood, pharmacologically targeting both pathways in COPD can maximize bronchodilation. Combining LAMAs and LABAs demonstrated improved efficacy compared with the individual therapies and so, for greater convenience, several fixed-dose combinations for once-daily use have been developed. These fixed-dose combinations demonstrate improvements in both lung-function and patient-reported outcomes compared with well-established monotherapies, with similar tolerability profiles to the individual agents. FAU - Panettieri, Reynold A Jr AU - Panettieri RA Jr AD - a University of Pennsylvania, Perelman School of Medicine , Philadelphia, PA, USA. LA - eng GR - P01 HL067663/HL/NHLBI NIH HHS/United States GR - P30 ES013508/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20150819 PL - England TA - Postgrad Med JT - Postgraduate medicine JID - 0401147 RN - 0 (Adrenergic beta-2 Receptor Agonists) RN - 0 (Bronchodilator Agents) RN - 0 (Delayed-Action Preparations) RN - 0 (Muscarinic Antagonists) RN - 0 (Receptors, Adrenergic) RN - 0 (Receptors, Muscarinic) SB - IM MH - Adrenergic beta-2 Receptor Agonists/*pharmacology MH - Bronchodilator Agents/pharmacology MH - Delayed-Action Preparations MH - Drug Therapy, Combination/methods MH - Humans MH - Medication Therapy Management MH - Muscarinic Antagonists/*pharmacology MH - *Pulmonary Disease, Chronic Obstructive/drug therapy/metabolism MH - Receptors, Adrenergic/*metabolism MH - Receptors, Muscarinic/*metabolism MH - Treatment Outcome OTO - NOTNLM OT - Chronic obstructive pulmonary disease OT - antimuscarinic OT - bronchodilation OT - combination therapy OT - beta2-agonist EDAT- 2015/08/22 06:00 MHDA- 2015/12/15 06:00 CRDT- 2015/08/22 06:00 PHST- 2015/08/22 06:00 [entrez] PHST- 2015/08/22 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - 10.1080/00325481.2015.1080589 [doi] PST - ppublish SO - Postgrad Med. 2015;127(7):771-80. doi: 10.1080/00325481.2015.1080589. Epub 2015 Aug 19.