Pancreatin contains the pancreatic enzymes trypsin, amylase, and lipase...
Parenteral administration of trypsin triggers lung emphysema.
Eight weeks after a single intravenous injection of trypsin, more than half of 26 treated rats showed pulmonary emphysema, as demonstrated by a significant increase of the mean linear intercept (MLI = 107 microns) in comparison with 11 controls (69 +/- 15 microns) (mean +/- SD). As observed 56 days after the injection, the intraperitoneal administration of trypsin (24 rats) also leads to lung emphysema (MLI = 101-106 microns), as does endotracheal instillation of elastase (13 rats), (MLI = 108 microns). The intraperitoneal administration of trypsin in animals constitutes a model close to human pathology with which lung alterations in acute pancreatitis may be studied. Having no elastolytic properties, trypsin cannot directly induce emphysema. The observation of a pulmonary leucostasis in eight rats sacrificed early after the trypsin injection suggested that leucocyte trapping and activation are important for the genesis of this trypsin-triggered emphysema.
I don't have emphysema perse, just difficulty breathing. It feels like my lungs can' explain, probably due to a decreased elasticity as a result of the deficient AAT. This doesn't directly explain the AAT deficiency or what exactly the mechanism is, but it's a clue.
Or...
http://www.ncbi.nlm....8?dopt=Abstract
Mechanisms of lung injury in the copper-deficient hamster model of emphysema.
The full article is free to read.