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Increased expression of renin in chronic allograft nephropathy.

Abstract：

BACKGROUND:Chronic allograft nephropathy (CAN) is the main cause of renal transplant failure in the first decade posttransplant. The precise pathogenetic mechanism for CAN is not completely understood. A possible role of renin-angiotensin system for CAN has been suggested through clinical observations that angiotensin-converting enzyme inhibition and angiotensin II receptor blockers prevent CAN. METHODS:Distribution of renin-positive cells in allograft biopsy specimens was examined immunohistochemically in 23 renal transplant recipients diagnosed with CAN Biopsy specimens obtained from seven recipients with stable renal function were examined as controls. Histologic evaluation was performed based on the Banff 97 classification. RESULTS:Renin-positive cells were found in the juxtaglomerular apparatus (JGA) adjoining the afferent arterioles in both groups. When the number of renin-positive cells in JGA was defined as a renin index, it was significantly higher in the CAN than the control group (P = .007). There was no significant difference in age, interval between transplantation and biopsy, and blood pressure between groups. Only a significantly higher serum creatinine was found in the CAN group. CONCLUSIONS:The increased renin-positive cells in JGA suggest a significant role of the intrarenal renin-angiotensin system activation in the development of CAN.

journal_name

Transplant Proc

journal_title

Transplantation proceedings

authors

Oka K,Moriyama T,Takahara S,Naruse M,Namba Y,Ichimaru N,Kyo M,Kokado Y,Okuyama A,Ito T,Imai E,Aozasa K

doi

10.1016/j.transproceed.2005.05.001

subject

Has Abstract

pub_date

2005-06-01 00:00:00

pages

2131-4

issue

5

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(05)00522-1

journal_volume

37

pub_type

杂志文章

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