Failure of cyclosporine-treated renal allograft recipients to increase glomerular filtration rate following an amino acid infusion.

Abstract:

:Renal allograft recipients treated with cyclosporine (CsA) have increased renal vascular resistance that falls when CsA is stopped. With the aim of identifying whether CsA-treated patients with excellent renal function also have an alteration in renal vascular tone and to investigate which vessels are affected, we have studied the response of GFR and effective renal plasma flow (ERPF) to an infusion of an amino acid solution in a group of 9 CsA-treated renal transplant recipients with a normal plasma creatinine concentration (104 +/- 3.8 mumol/L [mean +/- SEM]). A similar group of 9 azathioprine-treated patients with good renal function (91 +/- 3.6 mumol/L) were used as controls. The azathioprine group had significant increases in both GFR (22%, P less than 0.05) and ERPF (19%, P less than 0.05) following a protein load, whereas there was no increase in either function in the CsA group. Amino acid infusions increase GFR and ERPF in normal kidneys--at least in part by producing afferent glomerular arteriolar dilatation. The difference we found between the two groups indicates a direct effect of cyclosporine on intrarenal vascular tone, even when renal function is considered to be normal.

journal_name

Transplantation

journal_title

Transplantation

authors

Cairns HS,Raval U,Neild GH

doi

10.1097/00007890-198807000-00014

subject

Has Abstract

pub_date

1988-07-01 00:00:00

pages

79-82

issue

1

eissn

0041-1337

issn

1534-6080

journal_volume

46

pub_type

杂志文章
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