Hyaluronan synthase 3 is protective after cardiac ischemia-reperfusion by preserving the T cell response.

Dysregulated extracellular matrix (ECM) is a hallmark of adverse cardiac remodeling after myocardial infarction (MI). Previous work from our laboratory suggests that synthesis of the major ECM component hyaluronan (HA) may be beneficial for post-infarct healing. Here, we aimed to investigate the mechanisms of hyaluronan synthase 3 (HAS3) in cardiac healing after MI.

Cardiac Hyaluronan Synthesis Is Critically Involved in the Cardiac Macrophage Response and Promotes Healing After Ischemia Reperfusion Injury.

Rationale: Immediate changes in the ECM (extracellular matrix) microenvironment occur after myocardial ischemia and reperfusion (I/R) injury.

Objective: Aim of this study was to unravel the role of the early hyaluronan (HA)-rich ECM after I/R.

Methods And Results: Genetic deletion of Has2 and Has1 was used in a murine model of cardiac I/R.