Neutrophil α-defensin-1 is present in human stroke thrombi and induces NETosis in vitro - Summary - MDSpire

Neutrophil α-defensin-1 is present in human stroke thrombi and induces NETosis in vitro

  • By

  • Edward Theodore Littleton

  • Samuel George Thomas

  • Eleanor Woodhead

  • Julie Rayes

  • Alexander Brill

  • May 29, 2026

  • 0 min

Share

Objective:

To investigate the presence of α-defensin-1 in ischemic stroke thrombi and its role in inducing NETosis.

Key Findings:
  • α-Defensin-1 was detected in all analyzed thrombi, predominantly in regions enriched with neutrophils.
  • NETs were prominently featured in thrombi, as shown by citrullinated histone H3 staining.
  • Exposure to recombinant α-defensin-1 significantly increased NETosis at 10 µg/mL compared to unstimulated controls.
Interpretation:

α-Defensin-1 is a structural component of stroke thrombi and induces NETosis in vitro, indicating a link between neutrophil degranulation and thrombus composition.

Limitations:
  • Study involved a small sample size of 6 patients.
  • In vitro findings may not fully replicate in vivo conditions.
Conclusion:

α-Defensin-1 may play a significant role in the composition of stroke thrombi and the induction of NETosis.

Original Source(s)

Related Content