Inhibitory effect of quercetin on cervix cancer in mice / 中南大学学报(医学版)

OBJECTIVE@#To investigate the antitumor effect and mechanism of quercetin on murine cervical carcinoma U14.@*METHODS@#The 615-strain mice with U14 cervical cancer cells were randomly divided into 4 groups: a control, a low-dose intervention group [1.5 g/(kg . d)], a middle-dose intervention group [3.0 g/(kg . d)], and a high-dose intervention group [6.0 g/(kg . d)]. Different treatments were inoculated intraperitoneally after 6 days of transplantation and all mice were sacrificed after 26 days. The weight of tumors and inhibitory rates were measured. The expression levels of microvessel density (MVD) and nuclear factor-kappaB (NF-kappaB) were detected by immunohistochemistry. The apoptosis index (AI) was measured by terminal deoxynucleotidyl transferase assay in situ (TUNEL).@*RESULTS@#Compared with the control group, the tumor growth in the high-dose intervention group was suppressed significantly, and the weight and volume of the tumor were markedly decreased (P0.05).@*CONCLUSION@#Quercetin showed a marked inhibitive effect on U14 growth, and its antitumor mechanism may be associated with inhibiting the angiogenesis and inducing apoptosis.

Effect of progesterone on the secretion of matrix metalloproteinase-2 and matrix metalloproteinase-9 in human ectopic endometrial stromal cells / 中南大学学报(医学版)

OBJECTIVE@#To determine the effect of progesterone on the secretion of matrix metalloproteinase-2 (MMP-2) and matrix metalloproteinase-9 (MMP-9) in ectopic endometrial stromal cells.@*METHODS@#Ectopic endometrial stromal cells were obtained from 17 patients with endometriosis. Endometrial stromal cells were obtained from 12 patients with endometriosis and 14 cases of controls. Ectopic endometrial stromal cells of 15 cases were treated with progesterone. Culture supernatants of these stromal cells were analyzed for MMP-2 and MMP-9 by zymography.@*RESULTS@#Endometriotic stromal cells released significantly higher levels of MMP-2 and MMP-9 than endometrial stromal cells from women with and without endometriosis. Progesterone at 10(-9) mol/L caused endometriotic stromal cells a significant reduction MMP-2 and MMP-9 levels. When progesterone concentration was increased from 10(-9) mol/L to 10(-7) mol/L, the release of MMP-9 was almost completely inhibited, wherease that of MMP-2 was not completely inhibited.@*CONCLUSION@#Progesterone may inhibit the secretion of MMP-2 and MMP-9 in ectopic endometrial stromal cells, especially MMP-9.