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Amyloid enhancing factor (AEF) in the aging mouse.

T Yokota1, T Ishihara, H Kawano

  • 1First Department of Pathology, Yamaguchi University School of Medicine, Japan.

Virchows Archiv. A, Pathological Anatomy and Histopathology
|January 1, 1989
PubMed
Summary
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Amyloid enhancing factor (AEF) activity increases in aged mice spleens. This high molecular weight substance was detected in 52-week-old mice, but not in younger ones.

Area of Science:

  • Immunology
  • Aging Research

Background:

  • Amyloid enhancing factor (AEF) is implicated in amyloid deposition.
  • Understanding AEF's role in aging is crucial for neurodegenerative disease research.

Purpose of the Study:

  • To investigate age-related changes in AEF activity in mouse spleen homogenates.
  • To characterize the molecular properties of AEF.

Main Methods:

  • Spleen homogenates from mice of different ages (9, 28, 52 weeks) were prepared.
  • Supernatants were assessed for AEF activity.
  • AEF-containing fractions were analyzed using Sephacryl S-300 gel filtration.

Main Results:

  • Significant AEF activity was detected in 52-week-old mice spleen homogenates.

Related Experiment Videos

  • Weak AEF activity was observed in 28-week-old mice, and none in 9-week-old mice.
  • AEF activity eluted in the initial peak during gel filtration, indicating high molecular weight.

    • Conclusions:

    • AEF activity demonstrably increases in the spleens of aged mice.
    • AEF is likely a high molecular weight substance, suggesting potential involvement in age-related pathologies.