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Association of galactosamine-induced hepatitis in the rat with hyperhyaluronanaemia and decreased hyaluronan uptake by the isolated, perfused liver.

Abstract：

:Plasma hyaluronan (HA) concentration and the rate of HA uptake by the isolated, perfused liver were measured in rats treated with saline, D-galactosamine (GaI-NH2, 50 mg/100 g body wt), gadolinium chloride (GdCl3) (0.5 mg/100 g body wt), and GdCl3 + GaI-NH2. GdCl3 was given 24 hr before GaI-NH2 or saline. Plasma L-alanine:2-oxoglutarate aminotransferase (EC 2.6.1.2), a marker for hepatocyte damage, was increased by 8 hr and remained elevated for 24 hr after GaI-NH2 injection. GdCl3 did not affect plasma enzyme levels when given alone or in association with, but prior to, GaI-NH2. Plasma HA levels were increased (200%) within 24 hr after GaI-NH2 administration. A plateau was reached at 8 hr, which was maintained for at least 24 hr. Although GdCl3 alone did not affect plasma HA levels, it slightly delayed the increase in HA concentration in GaI-NH2-treated rats. Livers, isolated 24 hr after GaI-NH2 treatment, exhibited a severe depression (approximately 67%) of HA uptake. GdCl3 did not prevent this suppression. The data presented indicate that: (1) one of the sinusoidal endothelial cell-dependent functions of the liver, i.e. removal of HA from the blood stream, is profoundly impaired during galactosamine-induced hepatitis, and (2) the adverse effect of GaI-NH2 on this sinusoidal endothelial cell function may not be dependent on CdCl3-suppressible Kupffer cell functions.

journal_name

Biochem Pharmacol

journal_title

Biochemical pharmacology

authors

Deaciuc IV,Bagby GJ,Spitzer JJ

doi

10.1016/0006-2952(93)90553-9

subject

Has Abstract

pub_date

1993-08-17 00:00:00

pages

671-5

issue

4

eissn

0006-2952

issn

1873-2968

pii

0006-2952(93)90553-9

journal_volume

46

pub_type

杂志文章

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