Glucose degradation products in peritoneal dialysis solution impair angiogenesis by dysregulating angiogenetic factors in endothelial and vascular smooth muscle cells.
Clin Exp Nephrol
; 26(12): 1160-1169, 2022 Dec.
Article
de En
| MEDLINE
| ID: mdl-36070106
ABSTRACT
BACKGROUND:
The accumulation of glucose degradation products (GDPs) during peritoneal dialysis (PD) can lead to immature angiogenesis in the peritoneum. However, the effect of GDPs on angiogenesis, at concentrations observed in dialysate effluent, has not been widely investigated. We do not know how the inflammation observed in PD-related peritonitis affects angiogenesis of the peritoneum.METHODS:
Human umbilical vessel endothelial cells (HUVEC) and human umbilical aortic smooth muscle cells (HUASMC) were used to examine the response to the three main GDPs found in peritoneal dialysate (methylglyoxal (MGO), 3-deoxyglucosone (3-DG), and 5-hydroxymethylfurfural (5-HMF). Supernatant from lipopolysaccharide (LPS)-activated murine macrophage cell lines (RAW 264.7 cells) were used to stimulate angiogenesis in the peritoneum. Changes in the expression of vascular endothelial growth factor-A (VEGF-A) and platelet-derived growth factor B (PDGFB) in HUVEC, and PDGF-receptor beta (PDGF-Rß) in HUASMC, were examined by real-time PCR, Western blot, and ELISA.RESULTS:
In HUVECs, the expression of PDGFB mRNA and protein were decreased by exposure to MGO, 3-DG, and 5-HMF at concentrations observed in dialysate effluent. A subsequent decrease in secreted PDGF-BB was observed. In HUASMCs, MGO and 5-HMF increased the expression of VEGF-A mRNA and protein, while 5-HMF decreased the expression of PDGF-Rß. VEGF-A is upregulated, and PDGF-Rß is downregulated, by conditioned medium of LPS-stimulated macrophages in HUASMCs.CONCLUSIONS:
The GDPs of PD effluent cause an imbalance of angiogenic factors in endothelial cells and vascular smooth muscle cells that may lead to immature angiogenesis in the peritoneum.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Solutions de dialyse
/
Dialyse péritonéale
/
Agents angiogéniques
/
Glucose
/
Néovascularisation pathologique
Limites:
Animals
/
Humans
Langue:
En
Journal:
Clin Exp Nephrol
Sujet du journal:
NEFROLOGIA
Année:
2022
Type de document:
Article
Pays d'affiliation:
Japon