@article{oai:nagasaki-u.repo.nii.ac.jp:00017761, author = {Taba, Mitsuru and Nakayama, Toshiyuki and Naito, Shinji and Mihara, Yumi and Miura, Shiro and Naruke, Yuki and Sekine, Ichiro}, issue = {4}, journal = {Acta medica Nagasakiensia}, month = {Mar}, note = {AIM: The aim of this study was to investigate the role for vascular endothelial growth factor (VEGF) and its receptors, VEGFR-1 and -2, in the hyperplastic polyp (HP)- serrated adenoma (SA)-adenocarcinoma (AC) sequence of the colorectum.Methods: Thirty-six HPs, 33 SAs and 7 ACs (which contained HP and/or SA) were immunohistochemically examined for the expression of VEGF, VEGFR-1, and VEGFR-2.Results: VEGF protein was expressed in the cytoplasm of SA and AC tumor cells, and VEGFR-1 and VEGFR-2 were expressed both in the cytoplasm and on the membrane of these tumors, while there was faint or no expression of VEGF, VEGFR-1 and VEGFR-2 in HPs. Immunohistochemical staining revealed that 8.3% (3 of 36) HPs, 87.9% (29 of 33) SAs and 100% (7 of 7) ACs were positive for VEGF; 2.8% (1 of 36) HPs, 97.0% (32 of 33) SAs and 100% (7 of 7) ACs were positive for VEGFR-1; 16.7% (6 of 36) HPs, 100% (33 of 33) SAs and 100% (7 of 7) ACs were positive for VEGFR-2. The expression of VEGF, VEGFR-1 or VEGFR-2 was statistically correlated with the sequence of HP, SA and AC (P < 0.0001, respectively) Conclusion: Our results suggest that the VEGF pathway may play an important role in the HP-SA-AC sequence., Acta medica Nagasakiensia, 53(4), pp.85-88 ; 2009}, pages = {85--88}, title = {Differential Expression of Vascular Endothelial Growth Factor (VEGF) and VEGF Receptors in the Sequence of Hyperplastic Polyp, Serrated Adenoma and Adenocarcinoma of Colorectum}, volume = {53}, year = {2009} }