The effect of atrial natriuretic peptide on pulmonary acid injury in a pig model.
The effect of exogenous atrial natriuretic peptide (ANP) on pulmonary injury induced by aspiration of hydrochloric acid (0.1 N HCl, 2.0 ml/kg) was examined in anesthetized pigs ventilated with 100% oxygen. Group-specific diuretic treatment was used 60 min after aspiration and followed for a further 120 min. No diuretics were used for Group 1, 0.1 microg/kg/min of ANP was infused intravenously for 60 min in Group 2, and 0.05 mg/kg of furosemide was injected (intravenous bolus) in Group 3. Total urine volume after diuretic treatment did not differ significantly between Groups 2 and 3. However, the increase in PaO2 (to 386.3 +/- 67.5 mm Hg) after infusion of ANP was significantly higher than the increase in PaO2 (to 275.9 +/- 63.3 mm Hg) after furosemide treatment, and in the no treatment control (to 171.1 +/- 31.5 mm Hg). Pulmonary hypertension induced by acid aspiration was significantly reduced (p < 0.01 versus Groups 1 and 3) during ANP infusion. ANP has a beneficial effect on acute lung injury, possibly through its diuretic and/or pulmonary vasodilating action.
Department of Surgery, Keio University School of Medicine, Tokyo, Japan.
M
M
Tanabe
M
M
Ueda
M
M
Endo
M
M
Kitajima
D000818:Animals; D009320:Atrial Natriuretic Factor / Q000097:blood / Q000627:therapeutic use*; D004232:Diuretics / Q000627:therapeutic use*; D005665:Furosemide / Q000627:therapeutic use*; D006439:Hemodynamics / Q000187:drug effects; D006851:Hydrochloric Acid / Q000633:toxicity; D007262:Infusions, Intravenous; D008171:Lung Diseases / Q000139:chemically induced / Q000188:drug therapy*; D008297:Male; D009929:Organ Size / Q000187:drug effects; D013552:Swine
D004232:Diuretics; D005665:Furosemide; D009320:Atrial Natriuretic Factor; D006851:Hydrochloric Acid