Microvascular Density and HIF Pathway in Pancreatic Endocrine Tumours
Author Information
Author(s): Couvelard A, O'Toole D, Turley H, Leek R, Sauvanet A, Degott C, Ruszniewski P, Belghiti J, Harris A L, Gatter K, Pezzella F
Primary Institution: Hôpital Beaujon, Cancer Research UK, University of Oxford
Hypothesis
The study aims to evaluate angiogenesis and expression of HIF-related molecules in patients with pancreatic endocrine tumours.
Conclusion
As pancreatic endocrine tumours progress, there is a loss of VEGF expression and a significant decrease in microvascular density.
Supporting Evidence
- Microvascular density was significantly higher in benign PETs than in poorly differentiated carcinomas.
- Low microvascular density was associated with poorer survival.
- VEGF expression was lost as pancreatic endocrine tumours progressed.
Takeaway
This study found that pancreatic endocrine tumours have a lot of blood vessels but don't grow new ones as they get worse.
Methodology
The expression of VEGF, HIF-1α, HIF-2α, and CA9 was examined by immunohistochemistry in 45 patients with pancreatic endocrine tumours.
Potential Biases
The study may have bias due to the exclusion of patients who died shortly after surgery.
Limitations
Survival data were available for only 43 out of 45 patients, and one patient who died within 1 month after operation was excluded.
Participant Demographics
The study included 45 patients, with 22 males and 23 females, aged <40 (12) and >40 (33).
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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