Chronic liver iron overload in the baboon by ferric nitrilotriacetate. Morphologic and functional changes with special reference to collagen synthesis enzymes.

Abstract:

:Two baboons receiving intramuscular injections of ferric nitrilotriacetate over a two-year period were compared with two control baboons. The results indicate that in iron-overloaded animals: liver iron excess was major (maximal liver iron concentration values of 42 mumol/100 mg dry weight for both animals vs 1.3 +/- 0.2 (mean +/- SD) in controls) and chronic (for 15 months liver iron concentrations were higher than 15); iron deposition, although less abundant than in sinusoidal cells, was pronounced within parenchymal cells; serum transaminase activities were markedly increased; rare foci of perisinusoidal fibrosis were observed in areas of massive iron overload; and a dramatic decrease in hepatic 4-prolyl-hydroxylase activity was found, in contrast with unchanged glucosyltransferase and galactosyltransferase activities. In conclusion these findings suggest that, in our model, chronic liver iron overload: exerts a marked biochemical cytolytic effect; and does not produce significant hepatic fibrosis, possibly related to an inhibiting effect of ferric nitrilotriacetate complex on 4-prolyl-hydroxylase activity.

journal_name

Dig Dis Sci

authors

Brissot P,Farjanel J,Bourel D,Campion JP,Guillouzo A,Rattner A,Deugnier Y,Desvergne B,Ferrand B,Simon M

doi

10.1007/BF01296163

subject

Has Abstract,Author List Incomplete

pub_date

1987-06-01 00:00:00

pages

620-7

issue

6

eissn

0163-2116

issn

1573-2568

journal_volume

32

pub_type

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