Tryptase-positive mast cells and angiogenesis in keloids: A new possible post-surgical target for prevention

Michele Ammendola, Valeria Zuccalà, Rosa Patruno, Emilio Russo, Maria Luposella, Andrea Amorosi, Giuseppina Vescio, Giuseppe Sammarco, Severino Montemurro, Giovambattista De Sarro, Rosario Sacco, Girolamo Ranieri

Research output: Contribution to journalArticlepeer-review


Literature data indicate that mast cells (MCs) are involved in angiogenesis through the release of several pro-angiogenetic factors among which tryptase, a serine protease stored in MC granules, is one of the most active. However, no data are available concerning the role of MCs during keloids' angiogenesis. In this study, we evaluated the correlations of the number of MCs positive to tryptase (MCDPT) and microvascular density (MVD) within a series of 15 keloids and 10 normotrophic scars, by means of immunohistochemistry and image analysis methods. Data demonstrated a significant difference of MVD and MCDPT between keloids and normotrophic scars and a significant correlation between MVD and MCDPT in keloids. Our results suggest that tryptase-positive MCs might play a key role in keloids' angiogenesis. In this context, several tryptase inhibitors might be clinically evaluated as a possible new anti-angiogenetic approach to prevent keloid formation after surgery.

Original languageEnglish
Pages (from-to)53-57
Number of pages5
JournalUpdates in Surgery
Issue number1
Publication statusPublished - Mar 2013


  • Angiogenesis
  • Keloids
  • Mast cells
  • Treatment
  • Tryptase

ASJC Scopus subject areas

  • Surgery


Dive into the research topics of 'Tryptase-positive mast cells and angiogenesis in keloids: A new possible post-surgical target for prevention'. Together they form a unique fingerprint.

Cite this