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Rapid Quantification of Oxidized and Reduced Forms of Glutathione Using Ortho -phthalaldehyde in Cultured Mammalian Cells In Vitro
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[Glutathione metabolism during postnatal development of the rat lung]

Alejandro Ramírez1, Tatiana Reyes, Leonel Liberona

  • 1Departamento de Enfermedades Respiratorias, Pontificia Universidad Católica de Chile, Santiago, Chile.

Revista Medica De Chile
|October 5, 2007
PubMed

Insights

Lung antioxidant systems, including glutathione peroxidase (GPx) and glutathione reductase (GRd), significantly increase during postnatal development in rats. Understanding these physiological changes is crucial for interpreting lung responses to injury.

Area of Science:

  • Biochemistry
  • Pulmonary Medicine
  • Developmental Biology

Context:

  • Lung antioxidant systems undergo significant changes during the perinatal period.
  • Postnatal physiological regulation of lung antioxidants remains poorly understood.

Purpose:

  • To investigate the developmental changes in the glutathione system within the rat lung post-birth.
  • To measure key glutathione pathway enzymes and glutathione levels at various postnatal ages.

Summary:

  • Glutathione peroxidase (GPx) and glutathione reductase (GRd) activities increase significantly between 7 and 15 days postnatally.
  • Gamma-glutamylcysteine synthetase (y-GCS) activity gradually increases, doubling by 50 days.
  • Total glutathione (GSH) remains stable, while oxidized glutathione decreases postnatally.

Impact:

  • This study elucidates the dynamic regulation of lung antioxidant defenses during postnatal development.
  • Findings highlight the importance of considering developmental changes in antioxidant capacity when evaluating lung injury responses.
Abstract

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