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American Journal of Clinical Nutrition, Vol 46, 673-680, Copyright © 1987 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
EW Lipkin, SM Ott and GL Klein
Department of Medicine, University of Washington, Seattle 98195.
The characteristics of bone disease associated with parenteral nutrition are controversial. To further elucidate the contribution of aluminum deposition to this syndrome and the spectrum of pathology in patients supported by current regimens utilizing crystalline amino acids, quantitative histomorphometry and staining for Al were performed on iliac crest bone biopsies from 26 long-term parenteral nutrition patients and 16 normal volunteers. Compared with normal subjects, median trabecular bone area (TBA) for a group with positive Al staining (n = 14) who were exposed to casein hydrolysate was significantly less (12.9% vs 20.7, p less than 0.05) as was the median rate of bone formation (RBF) (29 micron2 X mm-2 X d-1 vs 360, p less than 0.05). A variety of abnormal histological findings were present in patients without positive aluminum stains (n = 12) who were supported solely by regimens utilizing crystalline amino acids. However, neither decreased TBA (median TBA = 15.3%) nor decreased RBF (median RBF = 126 micron2 X mm-2 X d-1) was uniformly characteristic of the latter patient group.
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