Angiogenesis and hyperbaric oxygen in the chick embryo Chorioallantoic membrane

Umberto Montecorboli, Tiziana Annese, Christian Marinaccio, Domenico Ribatti

Research output: Contribution to journalArticlepeer-review


Hyperbaric Oxygen Therapy (HBOT) is increasingly applied in different areas of medical practice. The oxy-hyperbarism effects are not well understood in cancer malignancy. One unique feature of cancer is the presence of hypoxic regions that are insensitive to conventional therapies. It is possible to alter the hypoxic state and produce reactive oxygen species for better treatment outcome by HBOT. In the present study, we determined the effects of HBOT on angiogenesis, a signature of cancer progression, by using the chick chorioallantoic membrane (CAM) in vivo assy. CAMs were exposed to 2.0 ATA (atmospheres absolute) for 30 min of hyperbaric oxygen on the 6th and 7th days of incubation (ED6, ED7). On the 10-11th day of incubation, CAMs were excised from eggs, fixed and analysed using APERIO ImageScope software. HBOT outcomes were evaluated quantifying the volumetric area occupied by blood vessels and calculating the number of blood vessel ramifications. Results indicated that CAMs treated at ED6 and ED7 had a significantly higher CAM vascularization and an increased number of blood vessel ramifications (+82% higher for ED6) compared to untreated CAMs (ED6=63.3±2.5 and ED7=57.7±5.5 vs. CTRL=34.7±2.5). Thus, HBOT induces an angiogenic response in treated CAMs through a classic sprouting mechanism.

Original languageEnglish
Pages (from-to)461-464
Number of pages4
JournalInternational Journal of Developmental Biology
Issue number10-12
Publication statusPublished - 2015


  • Angiogenesis
  • Chorioallantoic membrane
  • Hyperbaric oxygen

ASJC Scopus subject areas

  • Developmental Biology
  • Embryology


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