Objective To study the mechanism of restenosis for the prevention and treatment by PTA (percutaneous transcather angioplasty) through establishing an model.Methods Under median cervical incision, to eplore right rabbit carotid artery and then clip the segments of ICA at the origination and CCA near the cardiac side of bifucation, balloon catheter with guided wire were finally inserted from proximal cardiac side of the ligated ECA to perform TA after withdrawing the clipper. Histological and morphological analysis with the controll of normal left CCA were carried out during different follow up periods. Results Histopathological and morphometric analysis indicating thrombosis was the main changes in early stage and followed by VSMC from media to intima and irregular proliferation leading to obviously intimal thicking and restenosis at 15 days after PTA.Conclusions This experimental study show low mortality, high practicability and good reproducibility of the model as an ideal presentation for study the mechanism and the prevention of restenosis.

Objective To study the anti-inflammatory mechanism of the Penyankangshuan (PYKS) in treating chronic pelvic inflammation. Methods After model rats with endometritis were established successflly, 6 groups were formed which were the high, the middle and the low dosage groups of the PYKS, the KFXYS (a kind of patent medicine has a similar effect) group, the model group, the normal group. The treated rats were continuously rectal administration 3 weeks, the expression of NF-?B, Caspase-3 and MMP-2 were observed in the high, the middle dosage groups of the PYKS, the KFXYS group, the model group and the normal group with immunohistochemistry. Results The PYKS obviously raised the expression of Caspase-3 and MMP-2, but decreased the expression of NF-?B. Conclusion The anti-inflammatory mechanism of the PYKS possibly raised the expression of Caspase-3 and MMP-2 of mice endometrial cells, decreased the expression of NF-?B, so as to reduce inflammation soakage in excess and formation of inflammatory medium, accelerate apoptosis and reduce local inflammation.

Objective To investigate the changing trend of incidence and the relevant factors in fetal macrosomia. Methods 84 883 newborns during Jan. 1,1970 to Dec. 31,1999 were used to analyze the incidence of fetal macrosomia,the average birth weight,the percentage of superior fetal macrosomia, the distribution of gestational age, the rate of cesarean section and the vaginal delivery, the relevant factors of fetal macrosomia. Results All the cases were divided into 3 groups, one group from 1970 to 1979, the second one from 1980 to 1989, the third one from 1990 to 1999. The incidence of fetal macrosomia for three groups were 2. 6%, 6. 9% and 13 2% ( P

Objective To investigate the incidence and risk factors of surgical site infection(SSI)in neurosurgical patients in a tertiary first-class hospital,and provide reference for the prevention and control of SSI.Methods 47 neurological patients with SSI (49 patients developed SSI,2 were excluded from study due to the lack of appropriate control subject)from December 31 ,2011 to December 31 ,2012 were as infected group,and 94 patients without SSI (1 ∶2 matching)were as non-infected group,risk factors for SSI were analyzed retrospectively.Results There was no significant difference in general condition of two groups of patients (all P >0.05 );among 3 708 patients,49 (1 .32%)developed SSI;intracranial infection was the main type of SSI (89.80%);27 patients were performed ce-rebrospinal fluid (CSF)bacteriological detection,6 (22.22%)of whom were positive for CSF bacteriological detec-tion.Univariate conditional logistic regression analysis showed that risk factors for SSI in neurosurgical patients were operational risk assessment score (OR =2.04),frequency of preoperative antimicrobial use(OR =3.15 ),fre-quency of intraoperative antimicrobial use(OR=2.58),duration of operation(OR=2.70),surgical blood loss(OR=1 .72),indwelling drainage tube(OR=4.30),duration of indwelling drainage tube after operation(OR=2.06),and time for initial dressing change(OR=1 .66);Multivariate conditional logistic regression analysis showed that the in-dependent risk factors for SSI were frequency of preoperative antimicrobial use(P =0.03,OR =4.86),duration of operation(P =0.05,OR = 2.89 ),and time for initial dressing change after operation (P = 0.01 ,OR = 1 .92 ). Conclusion Risk factors for SSI in department of neurosurgery are multiple,duration of operation,duration of in-dwelling drainage tube after operation,and time for initial dressing change after operation are major risk factors.