Herbert G. Johnstone
From the Pacific Institute of Tropical Medicine, Hooper Foundation, University of California, San Francisco
1. The dog, harboring Dirofilaria immitis, serves as an appropriatelaboratory animal for testing the filaricidal effect of drugsproposed for use in the treatment of human filariasis.
2.Fatal doses of fouadin given intramuscularly, within a shortperiod of time caused a complete disappearance of the microfilariaefrom the peripheral blood of the dog, but exerted little orno damaging effect on the adult worms in the heart or pulmonaryartery.
3. Carbarsone, hexylresorcinol, trypan blue or sodium-iodoantimonitedid not possess any marked filaricidal or microfilaricidal qualitieswhen tested on dogs infested with the heart-worm.