Purpose To investigate the clinicopathological features,diagnosis and differential diagnosis of myxoid synovial sarcoma (MSS).Methods Clinicopathological changes and immunophenotype were retrospectively evaluated in two MSS cases collected from Fujian Provincial Hospital,conbined with genetic mutation analysis.The relevant literatures were reviewed to explore its clinical and pathological features of this tumor.Restilts The two cases,one man and one woman,aged 71 and 15years,respectively.Tumor was located in the left down abdomen in case 1,and left frontal temporal lobe in case 2.Histopathologically,at low magnification in case 1,the tumor was nodular,which was made up of areas of hypercellularity and hypocellularity.In some areas of hypocellularity,the tumor cells were arranged in fascicular,story-form,sheet arrangements with mucoid degeneration.In hypercellularity area,the tumor cells were arranged in fascicular,fish bone-liked arrangenents.At low magnification in case 2,the tumor was nodular,which was made up of areas of hypercellularity and hypocellularity.In hypocellularity area,the tumor cells were arranged in net-like,sheet arrangements,and fascicular,sheet arrangements in case 2.In some area,the tumor cells were epithelioid with cluster distribution,without infringing brain tissue.Immunohistochemically,the tumor cells were diffusely positive for BCL-2,vimentin,and α-SMA and EMA were partially positive,while CD34,CD57,S-100,CD117,PLAP were negative.However,in case 2,only BCL-2 was positive,and MyoD1,GFAP,Olig-2,EMA,Syn,CD99,CgA,S-100,Myogenin,STAT6,CD34,desmin and α-SMA were negative.Molecular detection SYT-SSX fusion gene was detected in both cases.Conclusion MSS is a rare malignancy of soft tissue.The diagnosis of MSS depends on molecular pathology.The clinical and pathological findings are different from mucinous fibrosarcoma and solitary fibrous tumor.The treatment is surgical resection,combined with radiotherapy,with poor prognosis.

Objective To construct eukaryotic expression vector of human antimicrobial peptide LL-37 pPIC9-LL-37, and transform the plasmid pPIC9-LL-37 into P.pastoris GS115 to obtain the recombinant P.pastoris strains.Methods The full-length of antimicsobial peptide LL-37 gene was artificially synthesized by overlap extension method and was fused to pPIC9 and then the fused plasmid was transformed into E.coli DH5?.After analysis by PCR and sequencing,the plasmid pPIC9-LL-37 was transformed into P.pastoris.The colonies exhibiting the phenotype of His+Mut+ or His+Mut-were screened by means of MM and MD plates and the insertion was confirmed by PCR.Results The results of PCR and sequencing confirmed that the LL-37 gene was correctly inserted into pPIC9. The colonies of 10 His+Mut+ and 9 His+Mut-were obtained by means of MM and MD plates screening and were confirmed by PCR.Conclsion The recombinant P.pastoris strains containing LL-37 were successfully obtained.

Objective To investigate the effects of sensory cueing (SC) on unilateral spatial neglect after stroke.Methods Five stroke survivors with unilateral spatial neglect underwent a tailored sensory cueing treatment (wearing a sensory cueing device 3 hours a day, 5 days a week for 2 weeks) in addition to their conventional rehabilitation.Two weeks before and one day before the treatment, and then one day, two weeks and 4 weeks after the treatment, all five patients were assessed using the Hong Kong edition of the behavioral inattention test (BIT-C).Results No significant changes were identified in the average BIT-C ratings at the two time point before the intervention.However, the average score had increased significantly only one day after the start of the intervention, with further significant improvement at each of the succeeding 2 week intervals.The greatest improvement was in finishing cancellation tasks, and the most severely affected patient showed the greatest improvement.Conclusion Sensory cueing treatment may be useful and feasible in reducing unilateral spatial neglect for stroke survivors.However, randomized and controlled trials with larger samples are needed to further verify its effects.

Objective To discuss the effective methods to improve the teaching effect of Basis of Nursing and cultivation of high-quality persons. Methods We randomly divided 87 nursing students into the test group(42 eases) ,which adopt the combination of grouped scene teaching with role-playing teaching and the control group (45 cases),which received routine teaching methods.The effect of the two teaching methods was evaluated by questionnaires. Results The total score and the score of each section of the questionnaires in the test group were higher than those of the control group(P ＜ 0.05 ). Conclusions The combination of scene teaching with role-playing teaching could inspire students' interest,strengthen the role consciousness and improve their comprehensive quality.

Objective:To investigate the effect ofLeech Capsule on stability ofcarotid plaque and expression ofplatelet membrane glycoprotein in patients with cerebral arteriosclerosis.Methods:203 patients with cerebral arteriosclerosis which with unstable carotid plaque were divided into two groups.There were 101 patients in observation group which were treated by conventional therapy and Leech Capsule, and 102 patients in control group which were treated only by conventional therapy.Then comparison analysis ofIMT, plaque area, unstable plaque number and positive rates ofPAC-1 and CD62P were made before and after treatment with two groups.Results:After treatment, the IMT, plaque area, unstable plaque number and positive rates ofPAC-1 and CD62P in observation group were significantly lesser than those in control group.In observation group, all parameters after treatment were significantly lesser than those before treatment, but in control group there were no significant difference in IMT and positive rates ofCD62P between after treatment and before treatment.In addition, there were no obvious adverse reactions after treatment by leech capsule.Conclusion:Leech Capsule was an effective drug for stabilizing carotid plaque and depressing the level ofplatelet activation, and it had few adverse reaction.It was worth further spreading.

Objective:To investigate the effect of early gradual diet on reducing delirium in elderly patients with hip arthroplasty.Methods:From January 2018 to January 2020, 74 cases of hip arthroplasty patients aged over 65 years old who were treated in the Third Affiliated Hospital of Sun Yat-sen University were selected as the observation objects. They were randomly divided into experimental group and control group with 37 cases in each group. The experimental group was given early gradual diet on the basis of routine postoperative care, while the control group was given routine postoperative diet on the basis of routine postoperative care. The incidence of postoperative delirium, Pittsburgh Sleep Quality Index (PSQI), patient satisfaction rate, average hospitalization days and average hospitalization expenses were used to evaluate the effect of early gradual diet on reducing delirium in elderly patients with hip arthroplasty.Results:The incidence of delirium in the experimental group was 2.70% (1/37) and 16.22% (6/37) in the control group, the difference was statistically significant ( χ2 value was 3.945, P<0.05); the hospitalization days of the experimental group were (10.68±5.13) d, (13.62±7.19) d in the control group. The difference of hospitalization days was statistically significant ( t value was 2.877, P<0.01). The incidence of difficulty in falling asleep and the satisfaction rate of the experimental group were 8.11% (3/37) and 94.59% (35/37) respectively, and those in the control group were 29.73% (11/37) and 78.38% (29/37) respectively, and the differences were statistically significant ( χ2 value was 5.638, 4.163, P<0.05). Conclusions:Early gradual diet after operation can reduce the incidence of delirium in elderly patients with hip arthroplasty, shorten the average hospitalization days, reduce the incidence of difficulty in falling asleep, improve patients' satisfaction, and help patients to pass through the perioperative period more safely and comfortably.

Objective To evaluate the role of autophagy in cognitive decline caused by sevoflurane anesthesia and the relationship with neurogenesis in aged mice.Methods Forty-five healthy SPF male mice,aged 20-22 months,weighing 25-35 g,were divided into 3 groups (n=15 each) using a random number table method:control group (group C),sevoflurane anesthesia group (group S) and autophagy agonist rapamycin group (group R).Rapamycin 0.2 mg/kg was intraperitoneally injected every day for 7 days in group R,while the equal volume of solvent dimethyl sulfoxide was given instead in S and C groups.In group S and group R,3％ sevoflurane was inhaled for 2 h once a day for 3 consecutive days starting from 5th day of administration,while the mixture of air and oxygen was inhaled instead in group C.Five mice in each group were randomly selected after the last anaesthesia and sacrificed,and the hippocampus was removed for determination of the expression of microtubule-associated protein 1 light chain 3 Ⅱ (LC3 Ⅱ) and Beclin-1 by Western blot.The other mice were sacrificed after Morris water maze test was performed,and hippocampi were isolated for determination of doublecortin (DCX) positive cells in the dentate gyrus by immunohistochemistry.Results Compared with group C,the escape latency was significantly prolonged,the percentage of time spent in the target quadrant was decreased,the expression of LC3 Ⅱ and Beclin-1 was down-regulated,LC3 Ⅱ/LC3 Ⅰ ratio was decreased,and DCX positive cell counts were reduced in S and R groups (P＜0.05).Compared with group S,the escape latency was significantly shortened,the percentage of time spent in the target quadrant was increased,the expression of LC3 Ⅱ and Beclin-1 was up-regulated,LC3Ⅱ/LC3 Ⅰ ratio was increased,and DCX positive cell counts were increased in group R (P＜0.05).Conclusion Autophagy is involved in the process of cognitive decline caused by sevoflurane anesthesia,which is related to inhibiting neurogenesis in the hippocampus of aged mice.

Objective:To discuss the effect of low-dose ionizing radiation on the health of radiation workers, and provide a basis for occupational health risk assessment of radiation workers.Methods:In January 2020, 3165 radiation workers who performed radiation occupational health examinations in Guangzhou Prevention and Treatment Hospital for Occupational Disease from January 2017 to December 2019 were selected as the research objects, and compared and analyzed the health status of radiation workers with different examination types (pre-job, in-job and off-job) , types of work, gender, and length of service.Results:The off-job occupational radiological health examination was rare at 2.3% (74/3165) . The abnormal detection rate of chest radiographs, renal function, thyroid function, and blood routine of the radiation workers in-job group was higher than that of the pre-job group ( P<0.05) . No statistical difference was found in the abnormal detection rate of the examination items during the in-job group and the off-job group ( P>0.05) . The blood routine abnormality detection rate of medical application group and industrial application group were higher than those of nuclear fuel group ( P<0.05) . The abnormal detection rate of blood pressure and renal function of male radiation workers was higher than that of females, while the abnormal detection rate of blood routine of females was higher than that of males ( P<0.05) . The abnormal detection rate of electrocardiogram, chest radiograph, blood pressure, renal function, thyroid function, and blood routine of radiation workers increased with increasing working age ( P<0.05) . Conclusion:Occupational health status of radiation workers is not optimistic. Radiation occupational health monitoring should be strengthened, special attention should be paid to off-job radiation occupational health examination, focusing on the sensitive indicators of sensitive personnel, improving radiation protection conditions, and effectively protecting the occupational health of radiation workers.

Objective:To discuss the effect of low-dose ionizing radiation on the health of radiation workers, and provide a basis for occupational health risk assessment of radiation workers.Methods:In January 2020, 3165 radiation workers who performed radiation occupational health examinations in Guangzhou Prevention and Treatment Hospital for Occupational Disease from January 2017 to December 2019 were selected as the research objects, and compared and analyzed the health status of radiation workers with different examination types (pre-job, in-job and off-job) , types of work, gender, and length of service.Results:The off-job occupational radiological health examination was rare at 2.3% (74/3165) . The abnormal detection rate of chest radiographs, renal function, thyroid function, and blood routine of the radiation workers in-job group was higher than that of the pre-job group ( P<0.05) . No statistical difference was found in the abnormal detection rate of the examination items during the in-job group and the off-job group ( P>0.05) . The blood routine abnormality detection rate of medical application group and industrial application group were higher than those of nuclear fuel group ( P<0.05) . The abnormal detection rate of blood pressure and renal function of male radiation workers was higher than that of females, while the abnormal detection rate of blood routine of females was higher than that of males ( P<0.05) . The abnormal detection rate of electrocardiogram, chest radiograph, blood pressure, renal function, thyroid function, and blood routine of radiation workers increased with increasing working age ( P<0.05) . Conclusion:Occupational health status of radiation workers is not optimistic. Radiation occupational health monitoring should be strengthened, special attention should be paid to off-job radiation occupational health examination, focusing on the sensitive indicators of sensitive personnel, improving radiation protection conditions, and effectively protecting the occupational health of radiation workers.

Objective:To investigate the application value of transcranial Doppler (TCD) in the prognosis assessment of nerve function in patients with acute cerebral infarction (ACI) after intracranial mechanical thrombectomy.Methods:A retrospective analysis was conducted. The clinical data of 43 patients with acute anterior circulation cerebral infarction who received intra-arterial mechanical thrombotomy for recanalization admitted to Taizhou Central Hospital from January 2018 to December 2019 were analyzed. The modified Rankin scale (mRS) score of patients were followed up by telephone at 3 months after surgery to evaluate the prognosis of neurologic outcome. Patients with mRS score 0-2 were enrolled in the good prognosis group, while those with a score of 3-6 were enrolled in the poor prognosis group. The gender, age, past history, underlying diseases, occluded arteries, atherosclerotic stenosis and bridging treatment, time from onset to reperfusion, blood flow dynamics under TCD at 1 day after thrombectomy, and National Institutes of Health stroke scale (NIHSS) scores before and 1, 7, and 14 days after thrombectomy were compared between the two groups. Multivariate Logistic regression analysis was used to screen the prognostic factors of nerve function at 3 months after mechanical thrombectomy in patients with ACI. The receiver operating characteristic (ROC) curve was drawn to evaluate the prognostic value for neurological function assessed by TCD.Results:Forty-three patients were enrolled in the final analysis, with 23 patients in the good prognosis group and 20 in the poor prognosis group. The recanalization was successfully achieved in both groups without complications. However, the hemodynamics of intracranial arteries evaluated by TCD 1 day after operation in both groups still showed partial or complete occlusion, and the hemodynamics of patients in the poor prognosis group was worse than that in the good prognosis group (poor blood flow: 40.0% vs. 0%, inadequate blood flow: 30.0% vs. 17.4%, good blood flow: 30.0% vs. 82.6%), and the differences were statistically significant (all P < 0.01). Before thrombotomy, there was no significant difference in NIHSS score between the two groups. After thrombotomy, the NIHSS score of the two groups gradually decreased with the extension of time, but the NIHSS score at 14 days after operation of the poor prognosis group was still significantly higher than that of the good prognosis group (10.55±2.93 vs. 4.65±1.70, P < 0.01). Univariate analysis showed that compared with the good prognosis group, the proportion of patients with diabetes and arteriosclerosis stenosis in the poor prognosis group were significantly increased (30.0% vs. 4.3%, 45.0% vs. 17.4%, both P < 0.05), and the time from onset to reperfusion was prolonged (minutes: 385.9±96.2 vs. 294.5±95.1, P < 0.01). Multivariable Logistic regression analysis showed that the therosclerosis stenosis [odds ratio ( OR) = 9.334, 95% confidence interval (95% CI) was 1.092-79.775, P = 0.041] and the reperfusion time ( OR = 1.016, 95% CI was 1.006-1.027, P = 0.002) were associated with prognosis of nerve function at 3 months after mechanical thrombectomy in patients with ACI. ROC curve analysis suggested that the evaluation of intracranial hemodynamics by TCD might be able to predict the prognosis of neurological function in patients with ACI after 3 months of intracranial mechanical thrombectomy, the area under ROC curve (AUC) was 0.768 (95% CI was 0.620-0.917), the sensitivity was 65.0%, the specificity was 87.0%, the positive predictive value was 82.6%, and the negative predictive value was 70.0%. Conclusion:The evaluation of intracranial hemodynamics assessed by TCD is helpful in early judging the prognosis of neurological function in patients with ACI after intracranial mechanical thrombectomy.