This paper examines how mesenchymal stem cell-derived exosomes can help treat pulmonary arterial hypertension, a serious condition of high blood pressure in the lungs. The authors highlight macrophages — key immune cells — as the gatekeepers through which exosomes exert their therapeutic effects.

By calming macrophage-driven inflammation, exosomes may reduce damage to the lung blood vessels. This research offers hope for patients with this difficult-to-treat condition.

This is a research reference from our clinical library. Approved by the Chambers Clinic Team — last reviewed May 28, 2026.