[Factors contributing to an increase in DLco (steady state) after exercise in healthy men].

We studied factors contributing to an increase of DLco (steady state) from rest to exercise in 10 healthy men. DLco(ss), Dm, and Vc were measured under three different conditions, rest, constant load exercise (50 watts), and hyperventilation (equal to the tidal volume and respiratory rate of exercise). DLco(ss) increased significantly during exercise and hyperventilation compared with at rest.

Inhibition of platelet integrin GPIIbIIIa prolongs survival of discordant cardiac xenografts.

The integrin GPIIbIIIa is known to be crucial to the formation of platelet aggregates and potentiates adhesion to subendothelial matrices via fibrin(ogen), von Willebrand factor, and vitronectin. Given the demonstration by us and others of widespread platelet aggregation during xenograft rejection, we hypothesized that platelet thrombi might contribute to graft dysfunction during development of hyperacute rejection (HAR), as well as during what we have termed delayed xenograft rejection (DXR), e.g.

PGG-glucan, a leukocyte-specific immunostimulant, does not potentiate GVHD or allograft rejection.

PGG-glucan is an immunomodulator which can enhance the host response to infection. Phase I/II clinical trials have documented the safety and potential efficacy of this compound to reduce postoperative infectious complications in high risk surgical patients. Organ transplant recipients may benefit from this drug due to their high rates of postoperative infectious complications.