Researchers have demonstrated the potential of a new class of drugs for the treatment of refractory chronic obstructive pulmonary disease, i.e. COPD. Incurable to date, the disease is one of the most frequent causes of death worldwide and is typically triggered by smoking. In the current preclinical study, two anti-inflammatory substances have proved more effective than preparations used to date. The results were published in the Journal of Allergy and Clinical Immunology.