| Autor: |
Ohtsu, N, Ariagno, R L, Sweeney, T E, Davis, L, Moses, L, Petriceks, R, Daehne, J, Bensch, K, Northway, W H |
| Zdroj: |
Pediatric Research; April 1989, Vol. 25 Issue: 4 p353-359, 7p |
| Abstrakt: |
ABSTRACT: The effect of dexamethasone (0.1, 1, and 5 mg/kg/d given subcutaneously from d 14-18) was tested in infant mice continuously exposed from birth to either humidified air or 80% oxygen. Dexamethasone significantly decreased lung wet wt (p<0.01), lung water (p<0.021), lung dry wt, protein, and DNA (p<0.001) in both airand oxygen-exposed animals. Dexamethasone, however, had no effect on lung compliance measured after animals were killed on d 18. It also had no effect on the increase in the blood-air barrier thickness or decrease in the blood-air exchange surface area seen in the 80% oxygen-exposed mice. Dexamethasone decreased thymus gland wt (p<0.001), body wt gain (p<0.001), brain wt (p<0.001), and lung lymphocytes (p<0.05) in both air- and oxygenexposed animals. The effect of 1 mg/kg and 5 mg/kg of the drug could not be differentiated. During the 4 d of drug administration, one air- and one oxygen-exposed animal died; both received 5 mg/kg/d of dexamethasone; microscopic and culture evidence of infection was not found. If dexamethasone causes similar effects in human infants with bronchopulmonary dysplasia, it should be used with great caution even for short-term clinical management. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
