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- W1997291280 abstract "In normal subjects, the glomerular filtration rate (GFR) and effective renal plasma flow (ERPF) acutely increase in response to infusion of amino acids and to low doses of dopamine. It is uncertain whether circulatory growth hormone (GH) is a permissive factor for these stimulatory effects. GFR and ERPF (constant infusion technique using 125I-iothalamate and 131I-hippuran, respectively) were measured before and during the infusion of dopamine and amino acids in 8 GH deficient subjects. The clearance study was repeated during concomitant administration of octreotide to investigate whether this somatostatin analogue would modify the amino acid and dopamine-induced renal haemodynamic changes. Dopamine increased baseline GFR from 89 +/- 3 (mean +/- SEM, n = 8) to 102 +/- 4 ml min-1 1.73 m-2 and ERPF from 352 +/- 19 to 476 +/- 26 ml min-1 1.73 m-2, P less than 0.001 for both. During amino acid infusion GFR and ERPF increased to 108 +/- 3 and 415 +/- 23 ml min-1 1.73 m-2, respectively, P less than 0.001 for both. Octreotide did not significantly decrease baseline and dopamine-stimulated renal haemodynamics but lowered the amino acid-stimulated GFR (98 +/- 4 ml min-1 1.73 m-2, P less than 0.05) and ERPF (381 +/- 18 ml min-1 1.73 m-2, P less than 0.05). Basal plasma glucagon concentrations were not suppressed by octreotide, whereas the amino acid-induced increments in plasma glucagon were partially inhibited. It is concluded that GH is not a necessary factor for the stimulatory effects of amino acids and dopamine on renal haemodynamics.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W1997291280 date "1992-08-01" @default.
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- W1997291280 title "Renal reserve filtration capacity in growth hormone deficient subjects" @default.
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- W1997291280 doi "https://doi.org/10.1111/j.1365-2362.1992.tb01506.x" @default.
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