Objective To evaluate the effects of unilateral extralevator abdominal-perineal excision (ELAPE) surgery and the ELAPE surgery on the pelvic floor detected by finite element analysis. Methods Three kinds of finite element mod?el were developed:the intact model, ELAPE model and the unilateral ELAPE model. The maximal stress and stress distribu?tions of each model under the same pressure were analyzed and compared. Results In the unilateral ELAPE model, non-le?vator ani tissue’s maximal stress on the levator ani reserved side was lower than that in ELAPE model, and was similar to that in the intact model. Its maximal stress on the excised side was lower than that in ELAPE model, and which was higher than that of intact model. Its maximal stress on the reserved side was lower than that of on the excised side. Conclusion Compared to the ELAPE surgery, the unilateral ELAPE surgery is able to reduce the stress of non-levator ani tissue on both sides, especially on the levator ani reserved side.

Objective To observe the curative effects of azithromycin combination with clindamycin on the treatment of children with mycoplasmal pneumonia. Methods 146 children were divided into control group and observation group randomly.Azithromycin was used to treat 69 children in the control group while azithromycin combination with clindamycin was used to treat 77 children in the observation group.The curative effects and adverse effects were observed. Results The total effective rate of control group was 81.2%,which was significantly lower than that in observation group(94.8%),(x2=6.59,P＜0.05). Conclusion Azithromycin combination with clindamycin was an effective and safety method to treat the children with mycoplasmal pneumonia.

Objective To observe the therapeutic effect of Dan-Shen Injection in the treatment of acute pancreatitis. Methods Forty-two cases of acute pancreatitis were classified into 2 groups randomly. The control group was given routine treatment. The therapeutic group was given with routine treatment combinat-ing with Dan-Shen Injection. Results The number of normal WBC cases within 7 days was more in the therapeutic group than that in the control group (P < 0. 05). The recover time of amylases in blood was shor-ter in the therapeutic group than that in the control group (P < 0. 05). The incidence rate of complication, the operative rate and the mortality in the therapeutic group were lower than that in the control group (P <0.05). Conclusion In the treatment of acute pancreatitis, Dan-Shen Injection can enhance the therapeutic efficacy, shorten the course of treatment and reduce the incidence rate of complication and the mortality.

AIM: To investigate the influence of television programs on children's mental growth so as to evaluate advantages and disadvantages on coordinative development of TV programs and child education.METHODS: A survey about the quality and audience rating of children's TV programs was carried out at the Developmental Psychology Institute of Beijing Normal University.RESULTS: The television programs have three main functions for children: education function (or learning function, orientation function), information function and entertainment function. Main purposes and effect for watching TV by children are: ①The major two are entertaining and getting information to enrich their knowledge, but other purposes like training thinking ability and learning skills still exist. ② Children TV programs can promote learning knowledge, skill, and academic study; develop intelligence and personality. Problems mentioned above have the age differences. However, the negative effect on child should not be neglected: ① A lot of unhealthy contents block children's healthy development. ②Watching TV for hours wastes a lot of valuable time that can be used for other important things like reading. This time-killing habit may harm children's profound thoughts and thinking ability.CONCLUSION: We should present new philosophy on children's TV programs producing. The producer should know well about children's needs and respect their requirements, including all kinds of rights and ideas, linking the entertainment function of these programs more closely with their education function and taking advantage of successful business models oversea, and inspiring organizations to produce more suitable programs.

BACKGROUND: Being a traditional Chinese herb, huangqi (astragalus membranaceus) resists free radical, enhances immunity, promotes microcirculation and protects vascular endothelial cell and nervous system; of which, the protection of huangqi (astragalus membranaceus) on nervous vessel is related to its regulation on local cerebral cortical blood flow rate. OBJECTIVE: To observe the effects of huangqi (astragalus membranaceus) on local cerebral cortical blood flow rate after traumatic injury. DESIGN: Randomized paired experiment.SETTING: Neurological Surgical Institute of Lanzhou Military Area Command of Chinese PLA.MATERIALS: The experiment was performed in Traumatic Experimental Room of Neurological Surgical Institute of Lanzhou Military Area Command of Chinese PLA from February to May 2000, in which, 75 healthy male SD rats were employed and randomized into the control (5 rats), saline control (35 rats) and experimental group (35 rats). The latter two groups were subdivided into 7 time spots of 1, 3, 6, 8, 12, 24 and 48 hours after traumatic injury, 5 rats were involved in each spot.METHODS: In normal control, the model was not prepared and in the other two groups, the modified Feeney's method was used to establish craniocerebral traumatic model. In experimental group, right after injury, huangqi injection (5 g/kg) was applied abdominally and in saline control, physiological saline 0.5 mL was injected abdominally. MAIN OUTCOME MEASURES: It was to determine the blood flow rates in local cerebral cortex at corresponding time spots after traumatic injury. Fenestration was done in normal control for direct determination. RESULTS: By supplemented, 75 rats entered result analysis. Blood flow rates in local cerebral cortex: the rate in saline control 1 hour after trauma was lower than the control [(6.90±0.68), (7.94±0.65), P < 0.05], it was de creased to the minimum in 24 hours and began increasing in 48 hours [(5.86±0.61), (6.15±0.60)]; the rate in experimental group at every time spot was higher than saline control (P < 0.05). CONCLUSION: Huangqi (astragalus membranaceus) increases remark ably blood flow rate in local cerebral cortex, which is associated with its neurovascular protection.

BACKGROUND: Most of previous researches on the emotion regulation ability only took children as objects.There were very few studies to investigate the adolescents' emotion regulation ability.There are fewer researches tried to study over-province large sampling to get general situation of Chinese adolescents' emotion regulation ability. Very few studies have taken emotion regulation as independent factor and explored its developmental rules OBJECTIVE:To analyze the characters of grade and gender in emotion regulation ability of Chinese adolescents DESIGN:Cross-sectional sampling survey questionnaire with adolescents as subjects SETTING:Institute of Developmental Psychology of Beijing Normal University.PARTICIPANTS:Totally 11 855 students from junior and senior high schools in Beijing,Henan,Chongqing,Zhejiang and Xinjiang, 13 high schools are included.METHODS:The present study uses "the adolescents' emotion regulaPsychology Institute, Beijing Normal University) as measuring tool to grouply test with the class as a unit. The tests in the 5 districts were completed within 2 weeks. The questionnaire is a 5-point scale.The level of emotion regulation is the mean score of the 14 items. And the higher points means higher level of emotion regulation.in emotion regulation between different grades of adolescent.RESULTS:Main effect of gender is not significant (F(1.11843)=0.040,P=0.842),while main effect of grads is significant (F(5.11843)=101.437,P=0.000),and interaction effect between gender and grades is significant (F(5.11843)=3.812,P=0.002).CONCLUSION:The emotion regulation ability of adolescents increased with the increasing grade but being stable after grade 11;the girls' emotion regulation ability exceeds the boys' gradually in grade 11,and there is no difference in the emotion regulation ability between boys and girls in grade 12.

Objective To investigate the expression of extracellular signal-regulated kinase 1/2(ERK1/2) and transforming growth factor ?1(TGF-?1) in heart of spontaneous hypertensive rat.Methods The expression of ERK1/2 and TGF-?1 was determined by immunohistochemistry and Western blot.Results In arteriole of the heart of 8,16,and 20 week-old SHR,the rate of positive ERK1/2 staining at the endothelium(15.38%,76.97% and 72.72%,respectively) and at the vascular smooth muscle cell(VSMC) of 16 and 20 week-old SHR(5.49% and 6.83%,respectively)were significantly higher than that of control group(P

Objective A study was performed to better define the teaching outcome of computers in teaching medical imaging. Methods 150 4rd-year students were randomly assigned to four groups and experimental group exposed to 20 radiology cases as well as to a voluntary weekly radiology lecture. Group A used computer-based cases with interactive elements; group B used computer-based cases without interactive elements; group C used paper-based cases with interactive elements; and group D was not exposed to the cases and served as a control group. Results On a multiple-choice question test,groups A,B,and C showed significant improvemen(t+10.6%,+15.7%,+13.5%,respectively),whereas group D did not(+2.7%). On an image interpretation test,group A and group B showed the most improvement (+15.8%,P

Objective To investigate the MRI characteristics of low-grade endometrial stromal sarcoma (LGESS),and to improve the accuracy of the diagnosis.Methods The clinical and MRI data of 4 cases with LGESS confirmed by surgery and pathology were analyzed retrospectively.All cases underwent conventional MRI scans.Results All 4 cases had enlarged uterus in different degrees. The average diameter of lesions was 9 cm (range from 5 cm to 12.1 cm).Uterine cavity masses were found in 3 cases,all of which were solid masses and invaded into myometrium exhibiting disconnection or disappearance of the connection band of uterus,and one of which involved the bladder and right ureter,oviduct and ovary.The solid tumors in 3 cases showed isointensity on T1 WI and slight hyperin-tensity on T2 WI,1 of which was heterogenous with dilated vascular void signal in the inner and peripheral portion.In addition, myometrial mass was found in 1 case,which was cystic with septum and clear boundaries.The cystic tumor showed hypointensity on T1 WI and hyperintensity on T2 WI with hypointensive internal septum.There were 3 cases accompanied with uterine leiomyoma, and 1 case with pelvic lymph node metastasis.Conclusion Most of endometrial stromal sarcomas are located in uterine cavity,a few in myometrium.The tumors are solid,few can also show cystic,showing invasive growth into myometrium.The manifestation of low-grade endometrial stromal sarcoma has a certain characteristics on MRI,which is low or iso-signal intensity on T1 WI and high signal intensity on T2 WI,the signal intensity may be heterogeneous,so MRI can provide help for the correct diagnosis of the disease.

Objective:To investigate the expression of antigens in Plasmodium yoelii sexual stage and transmission blocking effects of monoclonal antibodies(McAbs).Methods:Observing the effects of anti Pys25 McAb4 and anti Pys21 McAb10 on developmental course of parasites in mosquitoes by direct mosquito feeds on passively immunized P.yoelii infected mice and the expression of Pys21 and Pys25 from gametocytes to ookinetes in indicated culture times by IFA and Western blotting.Results:The transmission blocking activity of the anti Pys25 McAb4 was complete and more potent than that of the anti Pys21 McAb10.Both Pys25 and Pys21 were presented in whole developmental course from gametocytes to ookinetes.Furthermore,the expression of Pys25 appeared to be earlier than that of Pys21 on zygote surfact.Conclusion:Pys25 and Pys21 are target antigens of transmission blocking immunity and that anti Pys25 McAb4 has more significantly transmission blocking activity is related with the early stage expression of Pys25 on zygote surface.