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[Placenta: a barrier for renotrophic factor?]

S Tucci Júnior1, A C Martins

  • 1Departamento de Cirurgia, Ortopedia e Traumatologia da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo.

Revista Da Associacao Medica Brasileira (1992)
|July 1, 1994
PubMed
Summary
This summary is machine-generated.

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A maternal kidney factor crosses the placenta to influence fetal kidney development. Maternal nephrectomy reduced fetal kidney weight due to lower water content, not altered growth.

Area of Science:

  • Developmental biology
  • Renal physiology
  • Maternal-fetal medicine

Context:

  • Investigating factors influencing fetal kidney development is crucial for understanding congenital anomalies.
  • The placenta's role in mediating maternal influences on fetal organogenesis requires further elucidation.

Purpose:

  • To determine if a renotrophic factor can cross the placenta and affect fetal kidney development.
  • To assess the impact of maternal nephrectomy on fetal kidney weight, composition, and water content.

Summary:

  • Pregnant rats underwent varying degrees of nephrectomy. Fetal kidneys in operated groups showed reduced weight and lower tissue water concentration compared to controls.
  • Fetal kidney DNA, RNA, and protein levels remained consistent across all groups, indicating no significant changes in cellular components.

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Impact:

  • Suggests a placental transfer of a renotrophic factor influencing fetal kidney water content.
  • Maternal kidney removal impacts fetal kidney water, but not cellular growth, independent of the extent of maternal renal tissue loss.