OBJECTIVE
To test the effect of heartworm infection on agonist-induced constriction of canine pulmonary artery and vein in vitro.
METHODS
Cumulative concentration-response relations to norepinephrine, serotonin, histamine, prostaglandin F2 alpha, and the thromboxane A2 analog U-44069 were
Although the acute death syndrome in feline heartworm disease is widely recognized, its pathogenesis remains a mystery. The most widely held hypothesis is that an acute anaphylactic reaction, perhaps precipitated by the death of the parasite, is the underlying cause. This study investigated the role