Related Experiment Video
Updated: Apr 27, 2026
Microperfusion Technique to Investigate Regulation of Microvessel Permeability in Rat Mesentery
Published on: September 12, 2015
Peritoneal microvascular endothelial function and the microinflammatory state are associated with baseline peritoneal
Lanbo Teng1, Ming Chang, Shuxin Liu
1Department of Nephrology, Dalian Central Hospital, Dalian, 116033, Liaoning, China, tenglanbo@sina.com.
Purpose:
To investigate microvessel density (MVD), vascular endothelial growth factor (VEGF), endothelial nitric oxide synthase (eNOS), and interleukin-6 (IL-6) mRNA expression in peritoneal tissues, and their relationships with baseline peritoneal transport in uremia.
Methods:
Thirty uremic patients with a peritoneal dialysis catheter were selected in the Department of Nephrology in Dalian Central Hospital, Liaoning, China between 2010 and 2012. Peritoneal specimens were harvested for assessment of MVD, VEGF, eNOS, and IL-6 mRNA expression. One month after continuous ambulatory peritoneal dialysis, a peritoneal equilibration test was conducted. According to the 4-h peritoneal dialysate and plasma creatinine ratio (D/P Cr), patients were divided into high (n=16) and low (n=14) transport groups.
Results:
General clinical data of high and low transport groups were similar (P>0.05). The MVD in peritoneal tissues was significantly higher in the high than in the low transport group (P<0.05). Correspondingly, VEGF (P<0.01), eNOS (P<0.01), and IL-6 (P<0.05) mRNA expression levels were significantly higher in the high as compared the low transport groups. Correlation analysis showed that the baseline D/P Cr was positively correlated with MVD and VEGF, eNOS, and IL-6 mRNA expression levels in the peritoneum (r=0.506, 0.646, 0.638, and 0.686, respectively; P<0.01).
Conclusions:
Uremic patients display differences in peritoneal microvascular endothelial function and microinflammatory states before peritoneal dialysis. Patients of the high transport group have higher MVD, increased expression of endothelial function markers (VEGF and eNOS), and the microinflammatory marker (IL-6). These observations are closely related to high baseline peritoneal transport.
Insights
Uremic patients with high peritoneal transport show increased microvessel density and elevated expression of vascular endothelial growth factor (VEGF), endothelial nitric oxide synthase (eNOS), and interleukin-6 (IL-6) mRNA. These factors are linked to higher peritoneal transport rates.
Area of Science:
- Nephrology
- Vascular Biology
- Molecular Biology
Background:
- Uremia is associated with altered peritoneal function.
- Peritoneal transport characteristics are crucial for dialysis efficacy.
- Understanding peritoneal microvascular and inflammatory changes is key in uremia.
Purpose of the Study:
- To investigate microvessel density (MVD), vascular endothelial growth factor (VEGF), endothelial nitric oxide synthase (eNOS), and interleukin-6 (IL-6) mRNA expression in peritoneal tissues.
- To determine the relationship between these markers and baseline peritoneal transport in uremic patients.
Main Methods:
- Thirty uremic patients undergoing peritoneal dialysis were assessed.
- Peritoneal tissue specimens were analyzed for MVD, VEGF, eNOS, and IL-6 mRNA expression.
- Patients were categorized into high and low peritoneal transport groups based on the 4-h dialysate and plasma creatinine ratio (D/P Cr).
Main Results:
- High transport group patients exhibited significantly higher MVD compared to the low transport group.
- Expression levels of VEGF, eNOS, and IL-6 mRNA were significantly elevated in the high transport group.
- Baseline D/P Cr positively correlated with MVD, VEGF, eNOS, and IL-6 mRNA expression.
Conclusions:
- Uremic patients demonstrate distinct peritoneal microvascular endothelial function and microinflammatory states prior to dialysis.
- Higher MVD, increased VEGF and eNOS expression, and elevated IL-6 are characteristic of the high peritoneal transport group.
- These findings are strongly associated with high baseline peritoneal transport in uremia.
