Steven D. Shapiro

TL;DR: Transplantation of wild-type bone marrow cells rescues vascularization and ossification in gelatinase B-null growth plates, indicating that these processes are mediated by gelatinaseB-expressing cells of bone marrow origin, designated chondroclasts.

TL;DR: Smoke-exposed MME-/- mice that received monthly intratracheal instillations of monocyte chemoattractant protein-1 showed accumulation of alveolar macrophages but did not develop air space enlargement, indicating that macrophage elastase is probably sufficient for the development of emphysema that results from chronic inhalation of cigarette smoke.

TL;DR: It is shown that transient elastase perfusion of the mouse aorta results in delayed aneurysm development that is temporally associated with transmural mononuclear inflammation, increased local production of several elastolytic MMPs, and progressive destruction of the elastic lamellae, demonstrating that inflammatory cell expression of MMP-9 plays a critical role in an experimental model of aortic aneurYSm disease.

TL;DR: Temporary administration of PA inhibitor-1 or the matrix metalloproteinase-inhibitor TIMP-1 completely protected wild-type mice against rupture but did not abort infarct healing, thus constituting a new approach to prevent cardiac rupture after acute myocardial infarction.

TL;DR: Protocol-guided weaning of mechanical ventilation, as performed by nurses and respiratory therapists, is safe and led to extubation more rapidly than physician-directed weaning.