Improvement of growth and food utilization by human recombinant growth hormone in uremia.

Abstract:

:We compared growth rate, food conversion ratio and morphology of the growth zone in female Sprague-Dawley rats with subtotal nephrectomy or sham operation. Both groups were either given vehicle or 1.4 IU/day recombinant human growth hormone (GH) by s.c. osmotic minipump, or 2.5 IU twice daily intraperitoneally for 14 or 20 days, respectively. Compared to uremic rats infused with vehicle, infusion of GH significantly (P less than 0.01) improved growth; that is, it increased gain of weight (delta 27.0 +/- 7.7 g vs. 11.6 +/- 4.9 g) and length (delta 1.8 +/- 0.3 cm vs. 1.12 +/- 0.44 cm) in ad libitum fed uremic rats. This was accompanied by increased food utilization ratio (0.146 vs. 0.065 g weight gain per g food intake). A similar increment of growth and food utilization ratio was also observed in GH versus solvent infused controls, either pairfed as for the uremic animals or fed ad libitum. Despite administration of GH, growth was not completely restored to normal in uremic animals. Circulating immunoreactive IGF I was not significantly increased by GH infusion in either uremic animals or controls. Histological analyses of the proximal tibia showed increased rate of longitudinal growth, as evaluated by tetracyclin-labeling, and increased volumetric density of primary spongiosa with unchanged width of primary spongiosa trabecules when GH was infused in uremic animals. The data suggest that growth impairment in the uremic rat is partially responsive to GH, and this is not accompanied by an increase of circulating IGF I. Therapeutic trials with recombinant GH in uremic children appear justified.

journal_name

Kidney Int

journal_title

Kidney international

authors

Mehls O,Ritz E,Hunziker EB,Eggli P,Heinrich U,Zapf J

doi

10.1038/ki.1988.7

subject

Has Abstract

pub_date

1988-01-01 00:00:00

pages

45-52

issue

1

eissn

0085-2538

issn

1523-1755

pii

S0085-2538(15)34195-8

journal_volume

33

pub_type

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