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Updated: Jan 30, 2026

Technique to Target Microinjection to the Developing Xenopus Kidney
Published on: May 3, 2016
Angiotensin inhibition in the developing kidney; tubulointerstitial effect
Kee Hwan Yoo1, Hyung Eun Yim2, Eun Soo Bae1
1Department of Pediatrics, College of Medicine, Korea University, Seoul, 02841, Korea.
Neonatal enalapril treatment disrupts kidney lymphangiogenesis and promotes fibrosis in developing rat kidneys. This study reveals how blocking the renin-angiotensin system impacts renal development and interstitial collagen deposition.
Area of Science:
- Developmental Biology
- Renal Physiology
- Molecular Biology
Background:
- Renin-angiotensin system (RAS) blockade during nephrogenesis leads to significant renal mal-development.
- The role of renal lymphangiogenesis disruption in these tubulointerstitial alterations remains unclear.
Purpose of the Study:
- To investigate if inhibiting renal lymphangiogenesis contributes to tubulointerstitial changes following RAS blockade during kidney maturation.
Main Methods:
- Newborn rats received enalapril or vehicle for 7 days.
- Assessed lymphangiogenesis markers (VEGF-C, VEGFR-3, Podoplanin, Ki-67).
- Quantified intrarenal FGFs, α-SMA, FSP-1, and interstitial collagen.
Main Results:
- Enalapril disrupted renal lymphangiogenesis, decreasing podoplanin and Ki-67.
- VEGF-C expression reduced, while VEGFR-3 increased.
- Reduced FGF-1, FGF-2, FGFR-1, and increased α-SMA, FSP-1, and collagen deposition observed.
Conclusions:
- Enalapril treatment during postnatal renal maturation disrupts lymphangiogenesis.
- This disruption is associated with tubulointerstitial changes and a pro-fibrotic environment in developing rat kidneys.
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