Objective To write the school-based teaching material of pathology,and apply it to the students in higher vocational colleges to evaluate the application effect.Methods Two classes of clinical medical students of Grade 201 1were divided into two groups:the experimental group(Class1,58 students) and the control group(Class2,60 students).Both of the two groups take the integration of theory and practice teaching method.The traditional teaching material was applied in the control group while the school-based teaching materials were adopted in the experimental group.Statistical analysis software SPSS 13.0 and two samples t test were used to compare the preparing effect before the class,case study effect and the final examination of the two groups.After the end of the course,students' teaching satisfaction questionnaire was conducted,and the results of the survey for the rank sum test were analyzed.Results The scores of preparing effect before class were higher in experimental group(84.4 ±6.2) than those in the control group(78.2 ±5.8),t=5.61,P=0.001; the case study effect in experimental group(78.6 ± 6.6) was higher than that of the control group(72.8 ± 5.3),t=5.27,P=0.002; there was no significant differences in the final examination between the two class [experimental group (83.5 ± 6.8),control group (81.6 ± 6.9)],t=1.51,P=0.183.The questionnaire shows,in the aspect of the difficulty of teaching material,the degree of satisfaction in the experimental group(satisfied:28,general:30,unsatisfied:0) was higher than the control group(satisfied:18,general:37,unsatisfied:5),Z=-2.43,P=0.015; in the aspect of reading interest,the degree of satisfaction in the experimental group(satisfied:32,general:25,unsatisfied:1) was higher than the control group(satisfied:22,general:35,unsatisfied:3),Z=-2.09,P=0.036; in the aspect of emphasizing on the key point,the degree of satisfaction in the experimental group(satisfied:20,general:38,unsatisfied:0) was higher than the control group(satisfied:12,general:39,unsatisfied:9),Z=-2.72,P=0.007; in the aspect of self-study effect,the degree of satisfaction in the experimental group(satisfied:20,general:38,unsatisfied:0) was higher than the control group(satisfied:16,general:39,unsatisfied:5),Z=-3.13,P=0.002; but there was no significant differences in classroomlearning effect(experimental group:satisfied,38,general,20,unsatisfied,0; control group:satisfied,36,general,23,unsatisfied,1),Z=-0.68,P=0.497.Conclusions The school-based teaching material can contribute to the students' self-learning,enhancing the students' interest of learning and knowledge-application ability.

Objective To investigate the surgical treatment and early intravitreal injection of antibiotics to the curative effects of vitrectomy for exogenous endophthalmitis. Design Retrospective case-controlled study. Participants From Jan 2000 to Dec 2004, 94 patients(94 eyes), diagnosed as endophthalmitis were evaluated retrospectively. Methods All patients underwent pars plana vitrectomy. 46 patients (46 eyes) underwent the intravitreal injection of antibiotics early before undergoing vitrectomy from 3 to 14 days (mean 5.6 days) (group Ⅰ). The other 48 patients (48 eyes) underwent vitrectomy directly (group Ⅱ). Postoperative follow-up ranged from 3 to 12 months (mean 7.5 months). Main Outcome Measures Visual acuity. Results The visual acuities of these 94 patients improved significantly after vitrectomy (P=0.000). The rate of curative effects in group Ⅰ was significantly higher than that of the group Ⅱ (P=0.029). According to the further analysis, the rates of curative effects of the patients underwent vitrectomy in 7 days were similar between group Ⅰ and group Ⅱ(P=0.692), but the rates of curative effects of the patients underwent vitrectomy after 7 days were obviously different between two groups (P=0.008). Conclusions Undergoing vitrectomy as early as possible is a good available method for the treatment of exogenous endophthalmitis. If the vitrectomy can not be undergone early, intravitreal injection of antibiotics in time before vitrectomy may increase the therapeutic effect of exogenous endophthalmitis obviously.

Objective To evaluate the effectiveness of using low-frequency repetitive transcranial magnetic stimulation (rTMS) along with donepezil in the rehabilitation of aphasia after cerebral infarction. Methods Fortythree aphasic patients with acute cerebral infarction were assigned into a treatment group or a control group.Both groups received standard basic treatment for acute cerebral infarction.From day 7 on,both groups received oral donepezil hydrochloride (5 mg/d) for 12 consecutive weeks.The treatment group received in addition 2 sessions of low frequency rTMS on the language center of the right hemisphere.The first session started at day 7 after onset,and each session consisted of rTMS on 10 consecutive days (once per day).There was a resting interval of 3 d between the two sessions.The rehabilitation of the aphasia was assessed prior to and after each session,and at the end of the entire 12 weeks of treatment using the western aphasia battery ( WAB ) scoring system and the aphasia quotient (AQ). Results There was no significant difference between the two groups after the first session in terms of the WAB or AQ results.However,the difference in improvement became statistically significant after the second session,as well as at the end of the entire 12 weeks.The average change in AQ was significantly greater in the treatment group. Conclusion Donepezil combined with rTMS early in the acute phase of cerebral infarction is helpful for the rehabilitation of aphasia.

Objective To investigate the therapeutic effects of repeated transcranial magnetic stimulation (rTMS) at high and low frequency for the rigidity and tremors of Parkinson's disease (PD).Methods Sixty-nine patients with PD received rTMS at 5 Hz or 0.5 Hz.The efficacy was assessed using the unified Parkinson's disease rating scale (UPDRS),motor function tests and motor evoked potentials (MEPs).Results Thirty-two patients with rigidity from PD received 5 Hz rTMS therapy,and their UPDRS total scores decreased significantly.Their motor function test results improved significantly and their MEP relaxed motor thresholds were significantly elevated.Thirtyseven patients with tremors from PD received 0.5 Hz rTMS therapy,and their UPDRS total scores were significantly decreased.Their motor function test results improved significantly and their MEP relaxed motor thresholds were significantly elevated.Conclusion High frequency rTMS may improve the symptoms of patients with PD rigidity and low frequency rTMS may improve the symptoms of patients with PD tremors.

Objective To compare the diagnostic efficacy of the V/Q scan and CT pulmonary angiography (CTPA) for the detection of acute pulmonary embolism (PE) in elderly patients.Methods Fortyfour patients (age ≥60 years old) with suspected acute PE underwent V/Q scan and CTPA.The diagnosis of PE by V/Q scan was based on the criteria of prospective investigation of PE diagnosis (PIOPED) Ⅱ and the prospective investigative study of acute PE diagnosis (PISA-PED).The final diagnosis was made clinically.The sensitivities,specificities and accuracies of PIOPED Ⅱ,PISA-PED,CTPA and Wills score were calculated and compared using x2 and Fisher's exact tests.Kappa analysis was used to analyze the diagnostic accordance rate of PIOPED Ⅱ and PISA-PED.Results The sensitivities of PIOPED Ⅱ,PISA-PED and CTPA in the diagnosis of PE were 70.00％ (14/20),84.62％ (22/26) and 65.22％ (15/23),respectively (x2 =0.069-1.545,all P＞0.05).The sensitivity of Wills score was significantly lower (23.08％,3/13).The specificity of CTPA (93.75％,15/16) was significantly higher than those of PIOPED lⅡ and PISAPED (80.00％,12/15 and 61.11％,11/18,both P＜0.05).The accuracies of PIOPED Ⅱ,PISA-PED and CTPA were 74.29％ (26/35),75.00％ (33/44) and 76.92％ (30/39),respectively (x2 =0.005-0.070,all P＞0.05).The accuracy of Wills score was significantly lower (52.17％,12/23).The diagnostic accordance rate of PIOPED Ⅱ and PISA-PED criteria was 77.14％(27/35),Kappa=0.547,P＜0.05.Conclusion V/Q scan and CTPA have no significant difference for the diagnosis of PE in the elderly patients.

Obej ctive To investigate the role of metastasis associated protein 1(MTA1)in estrogen reg-ulated expression of matrix metalloproteinase -9(MMP-9)and tissue inhibitor of metalprotease -1(TIMP-1) in estrogen receptor( ER ) positive breast cancer cells .Methods MTA1 knockdown cell model was generated based on MCF-7breast cancer cell line by transfected with MTA 1-shRNA.The mRNA and protein level of MMP-9 and TIMP-1 in wild type MCF-7(MCF-7WT)and MCF-7MTA1-shRNA before and after 17β-estradiol ( E2) treatment were examined by Real -time PCR and Western blot respectively .Results The MTA1-shRNA showed maximally 84.9%suppression of MTA1 expression in MCF-7,suggesting a satisfied MTA 1 knockdown cell model was established for subsequent experiments .After treated with E2 for 48 h,MCF-7WT showed an incre-ment of 46%(P<0.05)and 37%(P<0.05)of the mRNA and protein level of MMP -9 and a decrement of 32.3%( P<0.05)and 18.2%(P<0.05)of TIMP-1;MCF-7MTA1-shRNA showed a decrement of 32.3%(P<0.05)and 18.2%(P<0.05)of mRNA and protein expression of MMP -9 respectively but no significant differ-ence in TIMP-1 comparing with MCF-7WT before treated with Estradiol.After E2 treatment,MCF-7MTA1-shRNA didn′t show significant change of MMP -9 except decrements of 32.3%(P<0.05)and 18.2%(P<0.05)in the mRNA and protein levels of TIMP -1.Conclusion MTA1 may be involved in the pathway by which estrogen regulated the expression of MMP -9 but not TIMP-1 in ER positive breast cancer cells .

Aim To investigate the effect of baicalin on cell proliferation and cell migration in human skin SCC A431 cell line. Methods The A431 cells were incu-
bated with 50 mg·L-1 baicalin. The protein level of cofilin-1 was assayed by Western blot. Cofilin-1 specific siRNA fragment was designed , synthesized and trans-
fected into A431 cells. The proliferative activity and migration ability of cells were assessed by CCK8 assay and scratch wound healing assay separately. ResultsWestern blot results showed that baicalin treatment in-hibited the cofilin-1 protein expression to 49.3% com-pared with the control group. Single baicalin treatment and cofilin-1 silencing could drease the A431 cell growth and migration. And cofilin-1 silencing signifi-
cantly enhanced the efficacy of baicalin. Conclusions Baicalin could significantly inhibit the tumor cell's growth and migration in the A431 cell line. And cofi-lin-1 might become the potential target gene to enhance the effect of anticancer drugs.

Objective To compare the effects of pulse high-volume hemofiltration (PHVHF) and continuous veno-venous hemofiltration (CVVH) on severe acute panceatitis (SAP). Method From January 2005 to December 2009, a total of 38 patients with SAP were randomly(random number) divided into PHVHF group ( n = 18)and CVVH group ( n = 20). After hemofiltration for 72 hours, clinical symptoms, APACHE Ⅱ score, biochemical changes and mortality were observed. The levels of TNF-α, IL-6, and IL-10 in plasma were assayed by using ELISA before and after treatment. The doses of dopamine used in shock patients were also observed. Measurement data were expressed in(-x) ± s, and t-test was used for comparison between two groups. Results In both groups ,symptoms were markedly improved after treatment. The APACHE Ⅱ score, serum amylase, creatinine, and white blood cell count were decreased ( P ＜ 0.05). Besides, hypoxemia and acidosis were corrected, and the PHVHF group was superior to the CVVH group especially in heart rate, breathing and APACHE Ⅱ score ( P ＜ 0. 05).The levels of TNF-α, IL-6 and IL-10 decreased in both groups ( P ＜ 0.05), and the PHVHF group was superior to the CVVH group ( P ＜ 0. 01 ). The doses of dopamine used in shock patients also decreased in both groups ( P ＜0. 01 ), and they decreased more in PHVHF group than in CVVH group ( P ＜ 0.05). The mortality was 11.1%in PHVHF group and 25 % in CVVH group. Conclusions PHVHF is obviously superior to CVVH in the treatment of SAP, and can serve as an important adjuvant therapy for SAP, stabilizing the hemodynamics and reducing the levels of pro-inflammatory factors and mortality.

Objective To test the ceftriaxone susceptibility of Neisseria gonorrhoeae (NG) isolates from Nanjing city,and to assess their genotypes by using the NG multi-antigen sequence typing (NG-MAST) method.Methods A total of 204 NG strains isolated in 2007 and 81 in 2012 from Nanjing city were included in this study.The minimum inhibitory concentration (MIC) of ceftriaxone was determined for these strains using an agar dilution method.DNA was extracted by the Qiagen commercial kit from these strains followed by NG-MAST.Results All the isolates were susceptible to ceftriaxone (MIC,≤ 0.25 μg/ml).The MIC of ceftriaxone was ≥ 0.06 μg/ml for 63.2％ of all the NG strains,70.6％ of those isolated in 2007 and 44.4％ of those in 2012,and ≥ 0.125 μg/ml for 31.6 ％ of all the NG strains,39.7％ of those isolated in 2007,11.1％ of those in 2012.Totally,166 genotypes were identified among the 285 isolates,of which,73 had been reported,and 93 were previously unreported.The most prevalent genotype was ST568 (n =13) in NG strains isolated in 2007,followed by ST270 (n =9),ST421 (n =7),ST2288 (n =5),ST1731 (n =4),ST1766 (n =4),ST1866 (n =4),ST1870 (n =4),while ST2318 (n =5),ST1053 (n =4),ST5990 (n =4),ST8726 (n =4) were the common genotypes in 2012.Those isolates with identical or similar genotypes tended to display similar MICs for ceftriaxone.Conclusions The prevalent genotypes of NG are markedly different between 2007 and 2012 in Nanjing region,and there is a strong association between the genotypes and ceftriaxone susceptibility of NG.NG-MAST results may serve as a genetic marker in the surveillance of antibiotic susceptibility in NG.

Objective To evaluate the difference of PC values based on GBZ 97-2002 and on GBZ 97-2009 for lung cancer cases in Chinese uranium miners.Methods Using 19 lung cancer data ascertained in the past epidemiological study,PC values were calculated according to GBZ 97-2002 and GBZ 97-2009.Results In the 19 lung cancer cases,those cases that could not be judged as radiogenic cancers based on GBZ 97-2002,but may be judged as radiogenic cancers with GBZ 97-2009.The probability was enlarged by 1.1 times at least.The major reason was that the used value was the upper limit of 95％ in GBZ 2009 but the median in 2002.Conclusions Compared to GBZ 97-2002,the criteria value of PC in GBZ 97-2009 drops obviously.