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1998 ; 89
(9
): 933-9
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Antitumor effect of a neutralizing antibody to vascular endothelial growth factor
on liver metastasis of endocrine neoplasm
#MMPMID9818029
Konno H
; Arai T
; Tanaka T
; Baba M
; Matsumoto K
; Kanai T
; Nakamura S
; Baba S
; Naito Y
; Sugimura H
; Yukita A
; Asano M
; Suzuki H
Jpn J Cancer Res
1998[Sep]; 89
(9
): 933-9
PMID9818029
show ga
Distant metastasis of gastrointestinal endocrine neoplasm is resistant to
currently available treatments. Because hematogenic metastasis is dominant,
anti-angiogenic drugs are expected to be a novel therapy for this neoplasm. In
the present study, the therapeutic effect of vascular endothelial growth factor
neutralizing antibody (VEGFAb) on liver metastasis of an endocrine neoplasm was
investigated experimentally. Cecal transplantation into nude mice of small pieces
of EN-1, a xenotransplanted human intestinal endocrine neoplasm, resulted in
liver metastasis. A treated group (n = 19) received 100 micrograms/mouse of
VEGFAb intraperitoneally on alternate days from day 10 after tumor
transplantation, and the control group (n = 19) received saline. Five of the 19
control mice died of tumor progression, of which 2 could not be evaluated. The
cecal tumor weighed 6316 +/- 2333 mg (n = 17) in the control group and 1209 +/-
837 mg (n = 19) in the treated group (P < 0.01) 6 weeks after transplantation.
Liver metastasis developed in 16 of 17 control mice and in 2 of 19 treated mice
(P < 0.01). The VEGF level of the whole cecal tumor in the control group was
significantly higher than that in the treated group (305.1 +/- 174.1 vs. 54.7 +/-
41.2 mg; P < 0.001). VEGFAb did not cause any body weight loss (28.52 +/- 1.63 in
the control vs. 28.44 +/- 1.71 g in the treated group). These results indicate
that VEGFAb may be a novel therapeutic agent for endocrine neoplasm with distant
metastasis.