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Maternal diet programs embryonic kidney gene expression.

Simon J M Welham1, Paul R Riley, Angie Wade

  • 1Nephro-Urology, Institute of Child Health, University College London, London, United Kingdom. s.j.welham@qmul.ac.uk

Physiological Genomics
|April 14, 2005
PubMed
Summary
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Maternal low-protein diets during pregnancy reduce offspring

Area of Science:

  • Developmental biology
  • Nephrology
  • Nutritional science

Background:

  • Maternal diet during pregnancy influences offspring's long-term health.
  • Protein restriction in pregnant rats leads to fewer renal glomeruli and higher blood pressure in offspring.

Purpose of the Study:

  • To investigate if maternal diet alters gene expression in the embryonic kidney (metanephros).
  • To understand the molecular mechanisms linking maternal nutrition to kidney development and disease risk.

Main Methods:

  • Maternal rats were fed a low-protein diet from the start of pregnancy until embryonic day 13.
  • Gene expression analysis in embryonic metanephroi using representational difference analysis and real-time quantitative polymerase chain reaction.
  • Immunohistochemistry to localize protein expression of prox-1 and cofilin-1.

Related Experiment Videos

Main Results:

  • Maternal low-protein diet significantly reduced glomerular numbers by approximately 20%.
  • Downregulation of prox-1 and cofilin-1 gene expression was observed in embryonic metanephroi.
  • Maternal diet altered cell turnover and gene expression during early kidney development.

Conclusions:

  • Maternal diet programs embryonic kidney development, impacting nephrogenesis and glomerular formation.
  • Early-life nutritional programming by maternal diet contributes to variations in glomerular number, potentially influencing hypertension risk.
  • Intervention during early gestation may mitigate risks associated with programmed kidney development.