Objective To investigate the mechanisms of abnormal bleeding in patients with anovulatory dysfunctional uterine bleeding (DUB) and to analyze the correlation between vascular endothelial growth factor (VEGF) and micro...Objective To investigate the mechanisms of abnormal bleeding in patients with anovulatory dysfunctional uterine bleeding (DUB) and to analyze the correlation between vascular endothelial growth factor (VEGF) and microvessel density in the endometrium Materials & Methods Immunohistochemistry was used to study the expression of VEGF protein in the proliferative and hyperplastic endometrium. CD34 ,a marker of microvessel, was selected to measure microvessel density (MVD) in the endometrium.Fifteen women who were found to have no condition with normal menstrual cycles were set as control group.Results VEGF immunoreactivity in glandular epithelia cells was significantly lower in the hyperplastic endometrium than that of controls(P ＜ 0. 05). There was no significant difference in VEGF protein level between proliferative DUB endometrium and that of controls. A positive correlation was found between glandular VEGF and MVD in the endometrium(r=0. 666, P＜0.05). Conclusion The anovulatory DUB is associated with down-regulation of VEGF in the endometrium, and decreased secretion of VEGF will result in the disruption of angiogenesis, as a clinical manifestation of irregular bleeding.展开更多
文摘Objective To investigate the mechanisms of abnormal bleeding in patients with anovulatory dysfunctional uterine bleeding (DUB) and to analyze the correlation between vascular endothelial growth factor (VEGF) and microvessel density in the endometrium Materials & Methods Immunohistochemistry was used to study the expression of VEGF protein in the proliferative and hyperplastic endometrium. CD34 ,a marker of microvessel, was selected to measure microvessel density (MVD) in the endometrium.Fifteen women who were found to have no condition with normal menstrual cycles were set as control group.Results VEGF immunoreactivity in glandular epithelia cells was significantly lower in the hyperplastic endometrium than that of controls(P ＜ 0. 05). There was no significant difference in VEGF protein level between proliferative DUB endometrium and that of controls. A positive correlation was found between glandular VEGF and MVD in the endometrium(r=0. 666, P＜0.05). Conclusion The anovulatory DUB is associated with down-regulation of VEGF in the endometrium, and decreased secretion of VEGF will result in the disruption of angiogenesis, as a clinical manifestation of irregular bleeding.
