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Selective decrease of S-100 in discrete anatomical areas of undernourished rat brain.

B W Moore1, R Menke, A L Prensky

  • 1Departments of Psychiatry, Pediatrics, and Neurology, Washington University School of Medicine, USA.

Neurochemical Research
|November 26, 2013
PubMed
Summary
This summary is machine-generated.

Early-life malnutrition in rats reduced levels of the glial protein S-100 in the brain. Neuronal protein 14-3-2 levels remained unaffected, suggesting specific impacts on glial cells during development.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Biochemistry

Background:

  • Early-life nutrition is critical for brain development.
  • Malnutrition can have long-lasting effects on neurological structures and functions.
  • Specific protein markers can indicate cellular health and development in the brain.

Purpose of the Study:

  • To investigate the impact of early-life undernutrition on specific brain proteins in developing rats.
  • To compare the effects of malnutrition on glial versus neuronal protein concentrations.

Main Methods:

  • Rats were subjected to undernutrition from birth to 28 days of age.
  • Concentrations of glial protein S-100 and neuronal protein 14-3-2 were measured in different brain regions (cerebral cortex, diencephalon).
  • Protein levels were compared between undernourished rats and well-fed controls.

Main Results:

  • Undernourished rats showed significantly decreased concentrations of S-100 in the cerebral cortex (77-74% of controls) and diencephalon (68% of controls) by 21-28 days of age.
  • In contrast, the concentration of the neuronal protein 14-3-2 was not significantly different from controls in any brain area at 21 days of age.
  • These findings indicate a selective impact of early malnutrition on glial cells.

Conclusions:

  • Early-life undernutrition selectively reduces the concentration of the glial-specific protein S-100 in the developing rat brain.
  • The neuronal protein 14-3-2 appears less vulnerable to the effects of malnutrition during this developmental period.
  • These results highlight the specific sensitivity of glial development to nutritional status in early life.