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The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
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The gene encoding the main signaling molecules of the Wnt signaling pathways (the Wnt proteins) was discovered almost four decades ago by Nüsslein-Volhard and Wieschaus. They identified and originally named the gene "wingless" (wg) after a phenotype discovered during their landmark genetic screen in Drosophila for body pattern defects. At around the same time, another researcher named Harold Varmus found that a murine tumor virus activates the mammalian wg homolog, Int-1, which...
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The kidneys are a pair of bean-shaped organs in the human body that play a critical role in maintaining overall health. They filter out waste products from the blood, regulate blood pressure, maintain electrolyte balance, and stimulate the production of red blood cells.
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The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
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In Utero Intra-cardiac Tomato-lectin Injections on Mouse Embryos to Gauge Renal Blood Flow
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WT-1 se requiere para el desarrollo renal temprano.

J A Kreidberg1, H Sariola, J M Loring

  • 1Whitehead Institute for Biomedical Research Cambridge, Massachusetts 02142.

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|August 27, 1993
PubMed
Resumen
Este resumen es generado por máquina.

Las mutaciones en el gen WT-1 interrumpen el desarrollo de los riñones y las gónadas en ratones, lo que lleva a la letalidad embrionaria. Este estudio pone de relieve el WT-1

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Área de la Ciencia:

  • Biología del desarrollo Biología del desarrollo.
  • Genética La genética.
  • Biología Molecular Biología Molecular

Sus antecedentes:

  • Las mutaciones de la línea germinal en el gen supresor de tumores WT-1 están relacionadas con los tumores de Wilms y las malformaciones urogenitales en humanos.
  • Comprender el papel del gen WT-1 es crucial para estudiar el desarrollo urogenital y las enfermedades asociadas.

Objetivo del estudio:

  • Para crear un modelo murino para investigar los mecanismos moleculares del desarrollo urogenital.
  • Para aclarar la función del gen WT-1 en el desarrollo embrionario.

Principales métodos:

  • Gene dirigido a células madre embrionarias para introducir una mutación en el gen WT-1 murino.
  • Análisis de embriones mutantes en el día 11 de la gestación para observar defectos de desarrollo.

Principales resultados:

  • Los ratones mutantes homocigotos exhibieron letalidad embrionaria.
  • Los embriones mutantes mostraron un fallo en el desarrollo de los riñones y las gónadas, con apoptosis de blastema metaneférico y deterioro en el crecimiento de los brotes uretéricos.
  • También se observó un desarrollo anormal del mesotelio, el corazón y los pulmones.

Conclusiones:

  • WT-1 juega un papel crítico en el desarrollo urogenital temprano, incluida la formación de riñones y gónadas.
  • El modelo murino proporciona información valiosa sobre la función del WT-1 y las anomalías congénitas relacionadas.