AIM To study the anticancer effect of artesunate and its mechanism. METHODS To observe the effect of artesunate on the growth of solid tumor and the expression of PCNA, Bcl 2 and Bax genes in mice bearing H 22 solid h...AIM To study the anticancer effect of artesunate and its mechanism. METHODS To observe the effect of artesunate on the growth of solid tumor and the expression of PCNA, Bcl 2 and Bax genes in mice bearing H 22 solid hepatic carcinoma. RESULTS After administration of artesunate (ig, 300 mg·kg -1 ·d -1 ×7 d), growth of solid tumor was obviously inhibited, the tumor inhibitory rates were 49 1%, 48 7% and 46 6% in 3 experiments. The apoptosis of liver cancer cells were increased. Immunohistochemical staining showed that the number of Bcl 2 protein positive cells were decreased, but the number of Bax protein positive cells were increased. The PCNA positive cells were significantly lower than those in the control group. CONCLUSION Artesunate showed obvious anticancer activity on H 22 hepatic carcinoma bearing mice and undergo apoptosis of liver cancer cells. The mechanism of anticancer effect of artesunate may be related to down regulation of the expression of PCNA and Bcl 2 genes and up regulation of the expression of Bax gene.展开更多
OBJECTIVE:To study on effects of Lichong decoction on expression of apoptosis-controlling genes,Bcl-2 and Bcl-2-associated X protein(Bax) mRNAs in hysteromyoma tissue of the hysteromyoma model rat.METHODS:Fifty Wistar...OBJECTIVE:To study on effects of Lichong decoction on expression of apoptosis-controlling genes,Bcl-2 and Bcl-2-associated X protein(Bax) mRNAs in hysteromyoma tissue of the hysteromyoma model rat.METHODS:Fifty Wistar female rats were randomly divided into a normal group,a model group,a Lichong decoction group,a Guizifuling capsule group and a Mifepristone group.The hysteromyoma rat model was established by intraperitoneal injection of exogenous estrin and progestogens.Pathological examination of uterine tissue,uterine coefficient and uterine transverse diameter were made under optic microscope and expressions of Bcl-2 and Bax mRNAs in uterine tissue in the groups were detected with real-time fluorescent quantitative polymerase chain reaction(PCR) technique.RESULTS:After treatment,under microscope it was found that in the Lichong decoction group myometrium thinned,muscle fiber slightly overgrowth or long and thin,regular arrangement,inserting phenomenon of inner circular muscle and external longitudinal muscle was occasionally or not seen in the Lichong decoction group.The uterine coefficient and the uterine transverse diameter significantly decreased(P<0.01),and Bcl-2 mRNA expression significantly decreased(P<0.01) and Bax mRNA expression significantly increased in hysteromyoma tissue(P<0.01) in the Lichong decoction group as compared with the model group.CONCLUSION:Therapeutic effects of Lichong decoction on hysteromyoma is related with decrease of Bcl-2 mRNA expression and increase of Bax mRNA expression.展开更多
文摘AIM To study the anticancer effect of artesunate and its mechanism. METHODS To observe the effect of artesunate on the growth of solid tumor and the expression of PCNA, Bcl 2 and Bax genes in mice bearing H 22 solid hepatic carcinoma. RESULTS After administration of artesunate (ig, 300 mg·kg -1 ·d -1 ×7 d), growth of solid tumor was obviously inhibited, the tumor inhibitory rates were 49 1%, 48 7% and 46 6% in 3 experiments. The apoptosis of liver cancer cells were increased. Immunohistochemical staining showed that the number of Bcl 2 protein positive cells were decreased, but the number of Bax protein positive cells were increased. The PCNA positive cells were significantly lower than those in the control group. CONCLUSION Artesunate showed obvious anticancer activity on H 22 hepatic carcinoma bearing mice and undergo apoptosis of liver cancer cells. The mechanism of anticancer effect of artesunate may be related to down regulation of the expression of PCNA and Bcl 2 genes and up regulation of the expression of Bax gene.
基金Supported by Beijing City Natural Science Fund (No.7082015)National Natural Science Fund (No. 81073096)"Middle-young Aged Core Talent Cultural Plant" of Beijing City University Talent Strengthening Education Plant (No.PHR201008403)
文摘OBJECTIVE:To study on effects of Lichong decoction on expression of apoptosis-controlling genes,Bcl-2 and Bcl-2-associated X protein(Bax) mRNAs in hysteromyoma tissue of the hysteromyoma model rat.METHODS:Fifty Wistar female rats were randomly divided into a normal group,a model group,a Lichong decoction group,a Guizifuling capsule group and a Mifepristone group.The hysteromyoma rat model was established by intraperitoneal injection of exogenous estrin and progestogens.Pathological examination of uterine tissue,uterine coefficient and uterine transverse diameter were made under optic microscope and expressions of Bcl-2 and Bax mRNAs in uterine tissue in the groups were detected with real-time fluorescent quantitative polymerase chain reaction(PCR) technique.RESULTS:After treatment,under microscope it was found that in the Lichong decoction group myometrium thinned,muscle fiber slightly overgrowth or long and thin,regular arrangement,inserting phenomenon of inner circular muscle and external longitudinal muscle was occasionally or not seen in the Lichong decoction group.The uterine coefficient and the uterine transverse diameter significantly decreased(P<0.01),and Bcl-2 mRNA expression significantly decreased(P<0.01) and Bax mRNA expression significantly increased in hysteromyoma tissue(P<0.01) in the Lichong decoction group as compared with the model group.CONCLUSION:Therapeutic effects of Lichong decoction on hysteromyoma is related with decrease of Bcl-2 mRNA expression and increase of Bax mRNA expression.
