Blocking stress signals could limit harmful inflammation after heart attack

MedicalXpress | 五月 01, 2026

After a heart attack, the body rapidly floods the injured heart with neutrophils—white blood cells that help repair damage but can also make it worse when too many arrive too quickly. New research from the University of Oklahoma shows that these early-arriving cells come not from the bone marrow, as long believed, but from a hidden reserve along blood vessel walls. The discovery also identifies a potential way to limit their harmful surge.