Effects of angiotensin converting enzyme inhibitors and angiotensin II receptor blockers on angiogenesis of gastric cancer in a nude mouse model / 中华胃肠外科杂志
Chinese Journal of Gastrointestinal Surgery
;
(12): 565-568, 2008.
Artigo
em Chinês
| WPRIM
| ID: wpr-326576
ABSTRACT
<p><b>OBJECTIVE</b>To observe the effects of angiotensin converting enzyme inhibitors (ACEI) and angiotensin II receptor blocker (ARB) on tumor growth and angiogenesis in implanted gastric cancer mouse model, and to explore the probable mechanism of ACEI and ARB anticancer effect.</p><p><b>METHODS</b>Nude mouse model with human gastric cancer was established by subcutaneously inoculating human gastric cancer cell line SGC-7901. One week later, 60 mice were randomly divided into 5 groups control group, perindopril group, captopril group, losartan group, and valsartan group. These groups respectively received the normal saline, perindopril (2 mg/kg), captopril (5 mg/kg), losartan (50 mg/kg), valsartan (40 mg/kg) by gavage once a day. Twenty-one days after treatment the tumors were removed and the tissues were stained by immunohistochemistry method to observe the expression of VEGF, MMP-7 and microvessel density (MVD).</p><p><b>RESULTS</b>In all the ACEI and ARB groups, tumor volumes were significantly inhibited and MVD also decreased significantly as compared with control group (all P<0.01). In captopril and perindopril groups, the expression of VEGF and MMP-7 decreased significantly as compared with control group(all P<0.05). In losartan and valsartan group, the expressions of VEGF were significantly decreased as compared with control group (all P<0.05). The expressions of MMP-7 between ARB groups and control group were not significantly different.</p><p><b>CONCLUSION</b>ACEI and ARB can inhibit the tumor growth in gastric cancer model and suppress the angiogenesis of the tumor.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Farmacologia
/
Neoplasias Gástricas
/
Inibidores da Enzima Conversora de Angiotensina
/
Linhagem Celular Tumoral
/
Bloqueadores do Receptor Tipo 1 de Angiotensina II
/
Camundongos Endogâmicos BALB C
/
Camundongos Nus
/
Neovascularização Patológica
Limite:
Animais
/
Feminino
/
Humanos
/
Masculino
Idioma:
Chinês
Revista:
Chinese Journal of Gastrointestinal Surgery
Ano de publicação:
2008
Tipo de documento:
Artigo
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