Nitrogen-dioxide-induced emphysema in rats. Lack of worsening by beta-aminopropionitrile treatment.


We evaluated the effect of beta-aminopropionitrile (beta APN) on the nitrogen dioxide (NO2) animal model of emphysema. Rats maintained on a beta APN-supplemented or a regular diet were exposed to 30 ppm NO2 for intervals ranging from 1 to 8 wk. Emphysema development was assessed by histologic evaluation and by changes in lung volume and mean linear… (More)


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