Objective To explore the correlation factors of cranial magnetic resonance diffusion weighted imaging(DWI) in patients with acute cerebral infarction.Methods A total of 350 patients with acute cerebral infarction who underwent MR imaging were divided into DWI positive group and negative group according to whether the first diffusion weighted imaging was abnormal or not.The clinical and radiological data of the two groups were retrospectively collected and analyzed.patients with negative DWI on initial MRI were re-examined 1 week later.Result Thirty-four(9.7%) patients were DWI-negative in 350 patients with acute cerebral infarction on initial MRI,and 5 patients in DWI-negative group had positive lesions on the re-examine MRI.Multivariate logistic regression analysis indicated the patients with first blood pressure of admission≥ 140/90 mmHg(P=0.033),first blood glucose of admission≥ 7.0 mmol/L(P=0.028) and the time from the onset to initial MRI>24 h were more likely showed DWI-positive on initial MRI(P=0.013).Patients with posterior circulation infarcts were more likely to have negative DWI findings than patients with anterior circulation infarction(P=0.001).Conclusion Some patients with acute cerebral infarction may show DWI negative results on initial MRI,which is related with the time from onset to initial MRI and the site of cerebral infarction.Patients with posterior circulation infarcts are more likely to have first negative MR findings than patients with anterior circulation infarction.Patients with elevation of the admission blood pressure or blood glucose are more likely to have DWI positive lesions.Patients with acute cerebral infarction within the time window should received be thrombolytic therapy after carefully assessment to avoid delay in treatment even if the DWI negative results.

It is usually a challenge to repair the abdominal wall defect to general surgeons. With developing of materials science, the use of mesh provides a novel method of primary closure of abdominal wall defects in this set-ting. Recently , biological mesh has been reported to reconstruct abdominal wall successfully. This review is to in-troduce the recent status and progress on its biological characteristics,animal experiments and clinical Study.

Objective To investigate teaching situation of Introduction to Medicine at SJTUSM,and to make more progress in educational reforms. Methods By analyzing questionnaire and test paper,the relevant information was collected and analyzed by SPSS statistics software. Results Teaching the course at SJTUSM was basically satisfactory. Conclusion The investigation showed that the teaching quality of the course is being improved. However,the quality guarantee system of teaching process needs to be further perfected.

The development of the imaging technology enables diagnostic methods of detect intracranial aneurysms diversified. In recent years, the diagnosis of aneurysms was confirmed by digital subtraction angiography (DSA) which was regarded as the "gold standards". However, CT angiography (CTA), which appears as a fast, non-invasive, and easily achievable examination, is becoming as a new option in clinic. With the development of the CT facility and upgrade of the workstation software, CTA is more widely used in both diagnosing and treating intracranial aneurysm. This article reviews the sensitivity and specificity of CTA in the detection of intracranial aneurysms, and systematically analyzes its advantages and disadvantages as well as its development, imaging methods.

Objective To investigate the role of prokinetic agent itopride in colonic preparation before colonoscopy examination in patients with constipation.Methods A total of 115 outpatients with history of chronic constipation who requested colonoscopy were collected.According to colonic preparation proposal,patients were divided into three groups.Group A (39 cases) took standard dosage of PEG-E solution six hours before colonoscopy examination.Group B (38 cases) took 150 mg itopride 30 minutes before administration of lavage solution.Group C (38 cases) took itopride 150 mg at 7 am,12 am and 8 pm the day before the examination and on the examination day took the same medicine as that of group B.The blood pressure,heart rate and blood electrolytes were monitored before and after taking medicine in the patients of three groups.Quality of colon cleansing of each group was observed and side effects were also observed.One-way analysis of variance (least significant difference,LSD) test was performed for pairwise comparisons among the three groups.Chi-square test was applied for count data.Results Both group A and group B excluded one patient because of malignant carcinoma with colon stricture under colonoscopy,and 113 patients completed the whole colon examination.There was no significant difference in the baseline patients' data of three groups.The colon cleaning score of group C (7.28±1.11) was higher than those of group A and B (6.55±1.18 and 6.51±1.16,LSD test,both P＜0.05).The frequency of bowel movements defecation of group C (8.31± 1.32) was more than those of group A and group B (7.11± 1.41 and 6.94± 1.51,LSD,test,both P＜0.05).There was no significant difference in terms of intestinal bubble scores,blood pressure,heart rate,blood electrolytes the uncomfortable degree of colonic preparation and rate of side effects of the three groups.Conclusion The colonic preparation can be safely and effectively improved by taking high dose of itopride one day before and on the day of colonoscopy examination.

Objective To study the correlation between risk factors of CVD and cognitive deficit associated with cerebral infarction. Methods Cognitive function was tested in 101 cases of cerebral infarction using HDS-R at the end of 3 weeks and 6 months after onset of the stroke. Meanwhile, the data of risk factors and relative information of cerebral vascular disease were collected by using the scale of complications and inquiring the past history. The risk factors of CVD, such as neurological deficit, diabetes, hypertension, obesity, fever, heart diseases, smoking, overdrinking were compared between the cognitive deficit group and non-cognitive deficit group. Logistic regression analysis was adopted for data analysis. Results Of the 101 cases , 65 had cognitive deficit at the end of 3 weeks and 53 at the end of 6 months after onset of stroke. Age and score of scale of complications between cognitive deficit group and non cognitive deficit group were significantly different(P

Objective To investigate the effect of apatinib on the proliferation,apoptosis and migration of pancreatic cancer cell line AsPC-1 in vitro.Methods Pancreatic cancer AsPC-1 cells were treated by apatinib in different concentrations.Cell proliferation and apoptosis were measured by CCK-8 and flow cytometry,and the effect of apatinib on cell migration ability was observed by wound healing assay.Results In control and 10,20,30,40 and 50umol/L apatinib treatment group,the inhibitory rates of AsPC-1 cells were 0,(1.45 ±0.68)％,(16.92±0.70)％,(23.84±0.84)％,(34.35±1.55)％ and (37.33± 0.81) ％,respectively.Cell proliferation was obviously inhibited by apatinib as the concentration increased,and the differences were statistically significant (P ＜ 0.05).In control and 20,40 umol/L apatinib treatment group,the apoptotic rates were (9.44 ± 0.18) ％,(16.62 ± 0.19) ％ and (25.42 ± 0.41) ％,respectively.Number of apoptotic cells was obviously increased by apatinib as the concentration increased,and the differences were statistically significant (P ＜ 0.05).In control and 20,40 umol/L apatinib treatment group,the migration ability was (29.5 ± 0.7) ％,(17.4 ± 0.9) ％ and (6.6 ± 0.5) ％,which was greatly decreased as the concentration increased,and the differences were statistically significant (P ＜ 0.05).Conclusions Apatinib can effectively inhibit the proliferation and migration of pancreatic cancer AsPC-1 cells and induce apoptosis.

Objective To evaluate accuracy of cefoxitin disk testing for detecting oxacillin resistance coagulase-negative staphylococci (MRCNS). Methods 139 clinical coagulase-negative staphylococci (CNS) were detected with ID32 STAPH. Cefoxitin disk and oxacillin disk testing were used to detect MRCNS. PBP2a was tested by latex agglutination us a reference method. Results 139 CNS isolates were identified to 8 species: Staphylococcus haemolyticus , S. epidermidis , S. hominis , S. xylosus , S. saprophyticus , S. auricularis , S. simulans and S. warneri. The sensitivity and specificity for cefoxtin disk and oxacillin disk testing were 99.0% vs. 86.0% and 91.7% vs. 74.4%, respectively. One S. epidermidis strain was identified to affect the sensitivity of cefoxitin disk testing. S. xylosus, S. warned, and S. saprophyticus were major species related to the decrease of specificity of cefoxitin disk testing. S. haemolyticus, S. hominis, S. simulans and S. auricularis were major species related to the decrease of sensitivity of oxacillin disk testing. And the decrease of specificity of oxacillin disk testing were mainly related to S. hominis , S. simulans , S. xylosus , S. auricularis , S. saprophyticus and S. warneri. Conclusions The accuracy of MRCNS detection by cefoxitin disk testing is varied due to different CNS species. So it is necessary to test PBP2a or mecA gene according to CNS species, especially for S. xylosus, S. warned and S. saprophyticus.

Abnormalities, Multiple ; Craniofacial Abnormalities ; Humans

Objective Previous studies have shown that genetic variants in the interferons regulatory factor 5 (IRF5) gene are associated with rheumatoid arthritis (RA) in European and Japanese, but not found in Han Chinese. We conducted this study to investigate whether genetic variants in the IRF5 gene are associated with RA in ShaanXi Han Chinese population. Methods This study was collected 576 RA patients and 768 normal controls. Six IRF5 gene polymorphisms (rs729302, rs2004640, rs752637, rs3807306, rs10954213 and rs2280714) were genotyped by the SNaPshot method. T-test and χ2 test were used for statistic analysis. The genotype and allele frequencies were evaluated using the chi square tests. Genotyping data were adjusted by Logistic regression method by age and gender. The linkage disequilibrium (LD) block structure was examined using Hapview 4.2 software. Results Six SNPs inspected complied with Hardy-weinberg equilibrium (P>0.05). Two SNPs were significantly associated with RA: rs729302 A risk allele [OR=1.29, 95%CI (1.10, 1.50), P=5.57×10-3];dominant model [OR=1.58, 95%CI (1.10, 2.27), P=0.024], recessive model [OR=1.31, 95%CI (1.17, 1.64), P=0.028]. rs2004640 T risk allele [OR=1.28, 95%CI (1.08, 1.54), P=0.039]; dominant model [OR=1.27, 95%CI (1.03, 1.58), P=0.036]. In addition, there was no significant difference in rs752637, rs3807306, rs10954213 and rs2280714 SNPs between RA group and control and genotyped polymorphisms were significantly associated with RA susceptibility. Conclusion The present study confirm that rs729302 and rs2004640 in the IRF5 gene is significantly associated with increased risk of RA in ShaanXi Han Chinese population.