Serum and urine markers of collagen degradation reflect renal fibrosis in experimental kidney diseases.
Nephrol Dial Transplant
; 30(7): 1112-21, 2015 Jul.
Article
em En
| MEDLINE
| ID: mdl-25784725
ABSTRACT
BACKGROUND:
The extent of renal fibrosis in chronic kidney disease (CKD) is the best predictor for progression of most renal diseases. To date, no established biomarkers of renal fibrosis exist.METHODS:
We measured circulating and urinary-specific matrix metalloproteinase (MMP)-generated collagen type I and III degradation fragments (C1M and C3M) and an N-terminal propeptide of collagen III (Pro-C3), as markers of collagen type III production, in three rat models of CKD and fibrosis renal mass reduction (5/6 nephrectomy), progressive glomerulonephritis (chronic anti-Thy1.1 nephritis) and adenine crystal-induced nephropathy. Healthy rats served as controls.RESULTS:
In all three models, the animals developed significant CKD and renal fibrosis. Compared with healthy rats, serum C1M and C3M significantly increased in rats with 5/6 nephrectomy and adenine nephropathy (2- to 3-fold), but not with chronic anti-Thy1.1 nephritis. Urinary C1M and C3M levels increased 9- to 100-fold in all three models compared with controls. Urinary degradation markers correlated closely with renal deposition of collagen type I and type III. Pro-C3 was significantly increased only in the urine of 5/6 nephrectomy rats.CONCLUSIONS:
In particular, urinary markers of MMP-driven collagen degradation, rather than collagen production markers, may represent a novel, specific and non-invasive diagnostic approach to assess kidney fibrosis.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fibrose
/
Biomarcadores
/
Colágeno Tipo I
/
Colágeno Tipo III
/
Nefropatias
/
Nefrectomia
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Nephrol Dial Transplant
Assunto da revista:
NEFROLOGIA
/
TRANSPLANTE
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Grécia