title: Overexpression of soluble vascular endothelial growth factor receptor 1 in colorectal cancer: Association with progression and prognosis.
abstract: We examined the expression of sVEGFR1 in colorectal cancer tissue and corresponding normal colorectal mucosa to assess the clinical significance of sVEGFR1 in colorectal cancer. We also assessed the relationship between sVEGFR1 levels and various clinicopathologic factors and prognoses. sVEGFR1 and VEGF levels were measured in fresh-frozen tumor extracts from 84 primary colorectal cancer tissues and 27 corresponding normal mucosa using ELISA. Mean of sVEGFR1 levels were 3.17 ng/mg protein. sVEGFR1 levels increased significantly in cancer tissue compared with normal mucosa. Although VEGF levels increased in cancer tissues, the ratio of sVEGFR1/VEGF in cancer tissue was significantly lower than that in normal tissue. No significant correlation between sVEGFR1 or VEGF levels and any clinicopathologic parameter was found. Overexpression of sVEGFR1 was significantly associated with a favorable prognosis. Based on sVEGFR1 levels in colorectal cancer without distant metastases, patients with higher sVEGFR1 levels (>=1.5 ng/mg protein) demonstrated significant longer recurrence-free survival than patients with lower sVEGFR1 levels (<1.5 ng/mg protein) (P = 0.0017). Multivariate analysis showed that the sVEGFR1 levels in cancer tissue were an independent prognostic indicator of disease progression. sVEGFR1 expression was significantly elevated in colorectal cancer tissue compared with normal mucosa and the intratumoral balance between sVEGFR1 and VEGF was significantly different between tumor tissue and normal controls. Furthermore, sVEGFR1 levels showed a significant prognostic value. Further studies concerning the biologic and therapeutic significance of sVEGFR1 in colorectal cancer are warranted.
authors.affiliation: Department of Surgery, Tokyo Metropolitan Komagome Hospital, Tokyo Metropolitan Cancer and Infectious Disease Center, Tokyo 113-8677, Japan.
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Hiroko
authors.initials: H
authors.lastname: Bando
authors.forename: Takeo
authors.initials: T
authors.lastname: Mori
authors.forename: Keiichi
authors.initials: K
authors.lastname: Takahashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Matsumoto
authors.forename: Michiya
authors.initials: M
authors.lastname: Yasutome
authors.forename: Herbert
authors.initials: H
authors.lastname: Weich
authors.forename: Masakazu
authors.initials: M
authors.lastname: Toi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011379:Prognosis; D012189:Retrospective Studies; D012995:Solubility; D015996:Survival Rate; D040281:Vascular Endothelial Growth Factor Receptor-1 / Q000235:genetics / Q000378:metabolism*
chemical_list: D040281:Vascular Endothelial Growth Factor Receptor-1