RESUMO
Objective:To determine the inhibitory effect of Rupixiao ( RPX) granule on mammary gland hyperplasia ( HMG) in rabbits and explore the possible mechanism to provide reference for clinical medication. Methods:Rabbit model of mammary hyperpla-sia was established by estradiol benzoate and progesterone. Xiaoyao pills and tamoxifen were used as the positive control, and the RPX granule group was respectively at low, medium and high dose (0. 525,1. 05,2. 1 g·kg-1). Each group was with intragastric adminis-tration for 30 days. The levels of E2 , PROG, FSH, LH and PRL in serum and the expression of VEGF in the homogenate tissue were determined by an Elisa method. The breast tissue of rabbits in each group was withdrawn to observe the structure changes after Hema-toxylin-eosin staining ( HE) . Results:Ovarian preservation-benzoic acid, estradiol combined with progesterone could be used to estab-lish mammary gland hyperplasia in rabbits. RPX granule could significantly decrease the serum levels of E2 and PRL (P<0. 01)and increase that of PROG (P<0. 01 or P<0. 001). The results of pathological section showed that the breast structure in RPX granule high dose group could be restored to the level of the blank control group, which showed its therapeutic effect on HMG was better than that of tamoxifen and Xiaoyao pills. The expression of VEGF in each treatment group significantly decreased compared with that in the model group by the Elisa reagent (P<0. 001). Conclusion:RPX granule has good efficacy in HMG rabbits. The inhibitory effects of RPX granule on HMG in rabbits maybe related to the inhibition of VEGF in rabbit breast tissues, and the inhibition of RPX granule was similar to that of tamoxifen and Xiaoyao pills.
RESUMO
Objective: To evaluate the feasibility and effect of transcatheter closure of ventricular septal defects(VSD) using the VSD occluder.Methods: From December 2003 to March 2005,13 VSD patients,8 males and 5 females,ranging in age from 4 to 35(15.2?10.7)years,underwent catheter closure using the VSD occluder.Tthe mean diameter of the VSD obtained by transthoracic echocardiography was 4-12(5.4?1.2) mm.Transcatheter closure was performed under transthoracic echocardiographic guidance after left ventriculography.All patients were followed up 1,3 and 6 months after the procedures. Results: The devices were successfully placed in 12 of the patients and complete closure achieved in 11.Trace residual shunt was observed in 1 patient but disappeared within 10 minutes.No severe complications were noted except 1 case of complete right bundle branch block revealed by electrocardiography. Conclusion: Transcatheter closure of VSD by the VSD occluder is a safe and effective procedure,with good immediate results.Further clinical trials are under way to assess its long-term effect.