Executive function is a superordinate cognitive function of the brain. Executive dysfunction post stroke plays a very impor-tant role in recovery of motor function, which is associated with motor learning, postural control, etc. Executive function training may pro-mote the recovery of motor function. The potential neurological mechanism includes the cerebral network involving a variety of areas.

Motor dysfunction is one of the leading problems after stroke. The evidence existed that motor performance is largely affected by the location and volume of white matter especially the pyramidal tract, but not the cortex. The remodeling of contralesional primary motor output tract highly correlated with motor improvement. The unaffected pyramidal tract axons regenerate and cross into the affected side after ischemia can promte motor recovery after ischemia. Exercise and other rehabilitation may play a role on remodeling of pyramidal tract subsequent after cerebral infarction.

330 cases of impacted mandibular third molar were divided into 3 groups,A:younger than 18 years,B:18-25-year-old,C:ol-der than 25-year.Operation time(min)of group A,B and C was 21.95 ±5.86,6.45 ±4.92 and 18.77 ±9.64(B vs A or C,P <0.01), intraoperative complication rates were 2.73%,6.36% and 30.91%(P <0.01),postoperative complication rates were 51.82%,23.64%and 66.36%(P <0.05),respectively.18-25 year-old is the suitable age for removal of impacted mandibular third molars.

Objective:To study the relationship between susceptibilities of Trichophyton rubrum strains to antifungal agents and their species specificities.Methods: The susceptibilities of Trichophyton rubrum strains to itraconazole,ketoconazole,fluconazole,terbinafine,naftifine,5-flucytosine and amphotericin B were evaluated using a modified microdilution method.The relationship between susceptibilities and genotypes and phenotypes of Trichophyton rubrum strains with different origins was analyzed by random amplified polymorphic DNA(RAPD).Results: The Trichophyton rubrum strains showed narrow minimum inhibitory concentration(MIC) ranges to terbinafine(0.016-0.032 ?g/ml),naftifine(0.032-0.063 ?g/ml) and itraconazole(0.25-1 ?g/ml),whereas they showed broader MIC ranges to ketoconzole(0.25-2 ?g/ml)and fluconazole(1-32 ?g/ml).MICs of Trichophyton rubrum strains to terbinafine(M_0=0.032 ?g/ml) and naftifine(M_0=0.032 ?g/ml) were the lowest among 7 antifungal agents.Wilcoxon test(Kruskal-Wallis test) suggested that there was no significant relationship of MICs to terbinafine,naftifine,itraconazole and amphotericin B with the genotypes,phenotypes and origins of the Trichophyton rubrum strains.Conclusion: The antifungal susceptibility of Trichophyton rubrum strains may not be related to their genotypes,phenotypes or from which part of the body they are isolated.

Objective: To develop a method to determine the content of a atractylenolideⅠ in Xiangshayangwei Pills. Methods: Reverse Phase HPLC was used to determine the content of atractylenolideⅠ in Xiangshayangwei Pills. The separation was performed on YWG ODS column with methol water (60∶40) as a mobile phase and the wavelength of UV detector was 220nm. Results: The linearity of this method was well with the average recovery of 99.54%. Conclusion: The method is simple, reliable, and sensitive. It also shows good separating degree. It can be used in quality controll of Xiangshayangwei Pills.

Objective To assess the contraction and coordination changes in the anterior and posterior thigh muscles of patients recovering from cerebral infarction,and to provide objective references for targeted rehabilitation programs. Methods Eighteen cerebral infarction patients with mild hemiparesis (the patient group) and eighteen age- and sex-matched healthy volunteers (the healthy group) were investigated. The surface-electromyographic (sEMG) signals of their vastus medialis,rectus femoris,vastus lateralis,biceps femoris,semitendinosus and semimembranosus were recorded during knee joint flexion and extension in the prone position.The sEMG signals from both legs were recorded for the patient group,but only from the left leg in the healthy group.The standardized root mean square (stRMS) signals and the co-contraction ratios (CRs) were compared and analysed, Results The stRMSs of the rectus femoris,vastus lateralis and vastus medialis on the patients' affected side during knee extension were significantly higher than those in the healthy group at baseline and follow-up.The stRMSs of the biceps femoris and semitendinosus-semimembranous on the patients' unaffected side were significantly higher than those of the affected side and the healthy group during knee flexion at baseline.The CRs during knee flexion on the patientsˊ affected side at baseline and follow-up were significantly higher than those of the unaffected side at baseline. Conclusions After cerebral infarction,the functioning of both the anterior and posterior thigh muscles on the affected side are impaired.The rectus femoris are the most severely impaired knee extensors,and the biceps femoris,semitendinosus and semimembranous are impaired equally in knee flexion.The thigh flexors and extensors lose their normal antagonist-agonist contraction modes.The functions of both the anterior and posterior thigh muscles should be emphasized during rehabilitation to improve abnormal contraction.

Objective To investigate the value of perfusion CT in the evaluation of neoadjuvant chemotherapy in locally advanced squamous cell carcinoma.Methods Sixty-seven patients with Ib2-IIb squamous cell carcinoma of the cervix underwent CT perfusion imaging before neoadjuvant chemotherapy to measure blood flow (BF),blood volume (BV),peak time (MTT),permeability sur-face (PMB),perfusion time to peak (TTP)and MIP(HU);and underwent routine enhancement CT after the two course of neoadju-vant chemotherapy treatment to measure tumor size,and evaluate the therapeutic effect.Results Among 67 patients,48 patents were effective (2 completely remission and 46 partial remission),and 1 9 patients were ineffective (1 5 stable and 4 progressed),with the overall response rate of 71.6%.The differences of PMB and BV value between effective and ineffective group were statistically significant before neoadjuvant chemotherapy (P <0.001).The BF,MTT,TTP value were no significant difference between effec-tive and ineffective group before neoadjuvant chemotherapy (P >0.05).The BV and PMB value were relatively higher in the patients with effective chemotherapy.Conclusion CT perfusion imaging could measure the BV and PMB value of the tumor before neoadju-vant chemotherapy to provide the basis for treatment selection.

Objective To explore effective precautions and interventions for choking in dysphagia patients.Methods Clinical data on f dysphagia patients hospitalized from September 1,1996 to Aug 8,2014 were retrospectively analyzed to correlate choking with gender,age,consciousness,type of aspiration,food-intake pathway and food texture.Results Only 0.17％ of the patients (n =8) were found to have choked,and 6 of them were men.Children,teenagers,the middle-aged and the aged constituted 25％,12.5％,37.5％ and 25％ of the patients respectively.75％ were conscious and 62.5％ displayed silent aspiration.6 cases used oral intake and 2 used nasogastric tube feeding.Among the 8 choking patients,half ate solid food,2 semisolid and 2 liquid food.Six survived and 2 died.Conclusion The risk factors for choking include silent aspiration and oral intake of solid or semisolid food.The successful rescue rate for choking is relatively low,so clinicians should be aware of and try to eliminate these risk factors.

Objective To explore the changes in muscle activity patterns in the lower leg during ankle dorsiflexion and plantarflexion in stroke patients. Methods Ten recovering stroke patients with hemiparesis(Pa- tient group)and ten age-and sex-matched healthy volunteers(Healthy control group)were studied.The subjects performed ankle dorsiflexion and plantarflexion synchronized with a visual cue while supine.Surface electrodes were applied over the anterior tibialis(TA),caput laterale musculi gastrocnemius(IGM),caput mediale musculi gas-troenemius(mGM)and soleus muscles(SOL)for integrated electromyography(iEMG).Results During ankle dorsiflexion,the TA,lGM,mGM and SOL of the affected side showed a significantly lower iEMG signal than the unaffected side.Activity of the lGM,mGM and SOL of the affected side were significantly lower than in the healthy controls.During ankle plantaflexion,the TA,lGM and mGM on the affected side had significantly lower activity than those of the healthy controls.The mGM of the affected side showed significantly lower muscle activity than the unaffeeted side.The SOL contraction ratio on the affected side was significantly higher than on the unaffected side and in the healthy control group. Conclusion Except for the soleus,there is an obvious decline in muscle activi-ty in the affected lower extremities of stoke patients during ankle dorsiflexion and plantaflexion.The soleus on the affected side becomes the primary plantarflexor in patients with stroke,rather than the caput laterale musculi gas-trocnemius or caput mediale musculi gastroenemius as in healthy subjects.

Objective Research showed that angiotensin converting enzyme inhibitor and angiotensinⅡ(AngⅡ)receptor antagonist has good role of lowing-intraocular pressure.This study was to explore whether cultured human trabecular meshwork cells express AngⅡin vitro.MethodsThe human trabecular meshwork cells strains were cultured in DMEM+F12 medium containing 25% fetal bovine serum in vitro and passaged at the climbing sheet was prepared.The expression of AngⅡ in human trabecular meshwork cells was examined by immunohistochemistry,and AngⅡ protein was localized by Western blot.ResultsSubcultured cells showed spindle shape.AngⅡwas positively expressed in human trabecular meshwork cells by immunochemistry,showing the yellow-brown granule in cellular membrane and cytoplasm.A absence of response for AngⅡwas found in negative control sample.The band of AngⅡ protein was found at the relative molecular weight of 64 000 by Western blot.ConclusionThe result implies that human trabecular meshwork cells have the ability of synthesizing AngⅡ.It suggests that AngⅡ participates in the regulation of intraocular tension in glaucomous eye.