Objective To analyze the effects of achievement motivation and family environ-ment of undergraduates majoring in preventive medicine on creativity tendency. Methods The self-administered questionnaire was used to survey the general characteristics , achievement motivation , family environment, and Williams creativity tendency of undergraduates (n=243) from grade 1 to grade 5 majoring in preventive medicine in a medical college. The effects of achievement motivation and family environment on creativity tendency were tested with multiple linear regression analysis. SPSS 17.0 software was used for statistical analysis. The indexes between boys and girls was compared with group t test, and single factor analysis of variance was made for comparison between grades, SNK method was used to test and compare two groups; linear correlation analysis was made to inspect the correlation between the two indicators, and multiple linear regression analysis method was used for further analysis. Results The survey recycled 226 copies of effective questionnaires. The scores of achievement motivation, family environment, and Williams creativity tendency and all dimen-sions had no statistically significant difference among the five grades, or between the male and female (P>0.05). The positive influence factors of creativity tendency and its dimensions were pursuing success, the in-formative property, the entertaining property and organizational property, the negative influence factor was avoiding failure. R2 was 0.094-0.265 (P=0.000-0.048). Conclusion Achievement motivation and family environment of undergraduates majoring in preventive medicine may have posi-tive effects on creativity tendency. Various comprehensive measures should be taken to improve family environment and enhance achievement motivation, and to promote to increase creativity tendency, and to cultivate students' creativity and improve students' scientific research ability.

Objective To explore the effects of radiofrequency ablation ( RFA) combined with percutaneous vertebroplasty ( PVP) by the injection of artificial bone for metastatic spinal tumor. Methods Fifty-eight patients with metastatic spinal tumors were divided into bone cement group 1 (n=12),bone cement group 2 (n=16), artificial bone group 1 (n=16), artificial bone group 2 (n=14). The patients in bone cement group were arranged RFA combined with PVP by injection of bone cement,and the artificial bone group were treated with RFA combined with PVP by injection of artificial bone. The vertebral body modality,fractures, and visual analogue scale ( VAS) ,spinal ODI score were compared before operation,1 week,1,3,6,9,12 months of after operation. Results There were 12 patients (42. 9%) with vertebral body deformation in bone cement group,which was more than those in artificial group (6. 7%) (χ2 =8. 4768,P=0. 0036). The VAS or DOI score decreased after operation than those pre-operation in the 4 groups (P<0. 01),but increased in bone cement group after operation of 6, 9 and 12 months than those in artificial group (P<0. 05). Conclusion The combination of RFA and PVP by injection of bone cement or artificial bone is effective to metastatic spinal tumors. The effects of PVP injection with artificial bone maintains longer duration compared to bone cement.

Objective To optimize the prescription of flaxseed lignans sustained release tables by central composite design-response surface methodology.MethodsWith HPMC, EC and starch dosage as factors, and flaxseed lignans in 2, 6 and 12 h of cumulative release as evaluation indexes, central composite design-response surface optimization method was used to conduct prescription optimization experiments, and optimized prescription analysis was carried out.Results The optimal prescription of flaxseed lignans sustained release tables was as following: HPMC dosage was 43%; EC was 26%; starch content was 17%. Optimized index forecast values were very close to the observed values. In vitro release test of three selected optimal formulations indicated that there existed high approximation between the observed and estimated values.Conclusion It shows that the established model is suitable for flaxseed lignans sustained release tables, which can be used in the optimization of the prescription of flaxseed lignans sustained release tables.

Objective To study the preventive effect of biliary duct injury(BDI)of three-dimensional spiral CT cholangiography(SCTC)before laparoscopic cholecystectomy(LC).Methods A retrospective analysis was carried out for 30 patients suffering from cholelithiasts concurrent with choledocholithiasis from July 2007 to June 2009.EAndoscopic sphincterotomy(EST),then three-dimensional SCTC was carried out through endoscop-ic nasobiliary drainage(ENBD)before IX,and the preventive effect of BDI was evaluated.Results The visibility of intra-hepatic bile duct,the hepatic bile duct and the common bile duct were 100% the visibility of chol-ecyst bile duct was 73% ,and three-dimensional SCTC can tell the position of cholecyst duct,BDI was not happened in all these patients.Conclusion Three-dimensional SCTC before LC can decrease the possibility of BDI.

Bacterial biofilms are considered to be the hindrance in the treatment of chronic wound, because of their tolerance toward antibiotics and other antimicrobial agents. They also have strong ability to escape from the host immune attack. Acetic acid, as a kind of organic weak acid, can disturb the biofilms by freely diffusing through the bacterial biofilms and bacterial cell membrane structure. Then the acid dissociates to release the hydrogen ions, leading to the disorder of the acid-base imbalance, change of protein conformation, and the degradation of the DNA within the membranes. This paper reviews the literature on the characteristics and treatment strategies of the bacterial biofilms and the acetic acid intervention on them, so as to demonstrate the roles acetic acid may play in the treatment of chronic wound, and thus provide a convincing treatment strategy for this kind of disease.
Acetic Acid ; pharmacology ; Anti-Bacterial Agents ; pharmacology ; Biofilms ; drug effects ; Humans ; Wound Healing

Objective To evaluate the value of 3D-PCASL in the pre-operation brain gliomas-grading.Methods 3D-PCASL images of 41 cases of gliomas comfirmed by pathology,including 20 cases of low-grade and 21 cases of high-grade were retrospectively analyzed. The cerebral blood flows of the solid region of tumor (TBF),1cm and 1 cm-2 cm brain tissue around the tumor,and contralateral normal brain CBF were obtained based on the region of interest (ROI),respectively.Results According to independent sample t-test,all had statisti-cally significant differences (P <0.001)between high and low-grade gliomas except the 1-2 cm region around the tumor.One-way ANO-VA displayed that all of them had its statistically significant between differences region (P <0.001)in high-grade gliomas,which had statisti-cally significant differences (P <0.001)except 1 cm and 1 -2 cm of peri-tumor in low-grade gliomas.ROC curve analysis of TBF/contralateral gray matter showed that the area under the curve was 0.96.When 2 was chosen as threshold of rCBF,there was the highest sensitivity (85.7%)and specificity (100%).The accurate rate of conventional MRI for gliomas dianosis was 76% and the ac-curate rate of conventional MRI with ASL was 93%,which was statistically significant difference (χ2 =6.61,P =0.01)between two methodson the chi-square test.Conclusion 3D-PCASL can improve the accuracy of diagnosis of different grade brain gliomas.Com-pared with others parameters,rCBF have a higher sensitivity and specificity.

OBJECTIVETo evaluate the diversity of germplasm resources of Artemisia annua and provide the basis for improving utilization of germplasm resources, the agronomic traits of germplasm resources of A. annua were studied in Yun-Gui plateau.

METHODThe agronomic traits of 67 A. annua germplasm resources were measured by the visual observation and measurement methods. And the germplasm resources were clustered using flexible-beta method to analysis their genetic background.

RESULTThe result showed that 67 germplasm resources had a relatively wide variation on the 22 agronomic traits. Among 22 agronomic traits, the dry weight of branch had the greatest coefficient of variation, which was 53. 63, and the next were the dry weight of leaf, total plant weight, the length of pinnules and the length of leaflet, which were 42.74, 41.61, 39.54 and 39.22 respectively. The smallest coefficient of variation was the leaf corlor. Based the result of cluster analysis, these 67 germplasm resources were classed into 5 groups, and each group had its respective character. The first group showed early-maturing resources, dwarf stalk, slender rod, long bipinnata, high leaf-stem ratio and moderate leaf weight The third group showed late-maturing resources, tall and thick stalk, much-branch, bushy accessory pinna, high leaf weight and yield. The fifth group showed very late-maturing resources, strong lateral shoot, high leaf yield.

CONCLUSIONThere were significant genetic difference and diversity in the germplasm resources of A. annua. The result of cluster analysis showed that the resources of group 1, group 3 and group 5 were suitable as breeding material of A. annua.

Artemisia annua ; classification ; genetics ; growth & development ; Biodiversity ; Biomass ; China ; Cluster Analysis

OBJECTIVETo provide the basis for improving utilization of Artemisia annua germplasm resources and breeding variety, the interrelations between artemisinin content, artemisinin yield and agronomic traits of A. annua were studied.

METHODThe artemisinin content and each agronomic trait of 63 A. annua germplasm resources were measured by the visual observation and measurement methods. And the correlation analysis, regression analysis and path analysis were adopted.

RESULTThe result showed that there were significant differences in the artemisinin content and yield of 63 germplasm resources from the main production region of A. annua. Correlation analysis showed that there were significantly positive correlation between leaf weight and artemisinin yield with stem and branch characters, but there were negative correlation between artemisinin content with leaf characters of A. annua plant. The artemisinin content of A. annua increased with the increasing of primary branch number, bottom secondary branch number, and bottom stem diameter, etc. On the other hand, it decreased with the increasing of top secondary branch number, secondary leaf axis length, and bottom branch diameter, etc. The artemisinin yield of A. annua increased with the increasing of artemisinin content, leaf weight, and bottom secondary branch number, etc., and decreased with the increasing of bottom branch diameter, middle secondary branch number, and stem weight, etc. Path analysis showed that the primary branch number and bottom secondary branch number had a direct positive effect on the artemisinin content of A. annua. But the top secondary branch number had a direct negative effect on the artemisinin content of A. annua. The leaf weight and artemisinin content had a direct positive effect on the artemisinin yield and the ratio of leaf/stem, branch weight and stem weight had a direct negative effect.

CONCLUSIONOn the breeding A. annua variety, it can take into account both high leaf yield and high artemisinin content. And it was strongly recommend that the plant with moderate plant height and crown, shortness pinnae and secondary leaf axis, less middle and top secondary branch, strong stem, higher primary branch number and bottom secondary branch number, and higher ratio leaf/stem could be selected for breeding new varieties with high leaf yield and high artemisinin content.

Artemisia annua ; chemistry ; growth & development ; Artemisinins ; analysis ; Biomass ; Plant Extracts ; analysis ; Plant Leaves ; chemistry ; growth & development ; Plant Stems ; chemistry ; growth & development

Objective To evaluate the feasibility and efficacy of posterior enlargement of spinal canal for the treatment of multi-segmental cervical diseases without cervical lordosis.Methods From January 2013 to June 2017,a retrospective study was conducted with 21 patients of multi-segmental cervical diseases accompanied cervical lordosis loss,and the complete followup data was obtained.There were 14 males and 7 females,with an average age of 53.9±7.3 years (range,42-65 years).There were 14 multi-segmental cervical spondylotic myelopathy,5 ossification of posterior longitudinal ligament,and 2 congenital cervical stenosis included in this study.The cervical lordotic angle and cervical curvature index were measured preoperatively and 1 year postoperatively.To access the enlargement of spinal canal and spinal cord,the anteroposterior diameter and cross section area of spinal canal or spinal cord were measured on MRI preoperatively and 1 year postoperatively.The Japanese Orthopaedic Association Scores (JOA) was applied to evaluate the neurological function at preoperation and postoperation.Visual Analogue Scales (VAS) was applied to evaluate the pain degree at preoperation and postoperation.Frankel classification was used to assess the severity of spinal cord injury at preoperation and postoperation.Results The follow-up time was 12-26 months,with an average of 16.4 months.The cervical lordosis angle was 3.1°±2.3° preoperatively,and 4.2°±1.6° 1 year postoperatively with a significant difference.The cervical curvature index was 4.4％ ± 1.7 ％ preoperatively and 5.0％ ± 1.5 ％ 1 year postoperatively with no statistically difference.Except for C7T1 level,the preoperative anteroposterior diameter and cross section area of spinal canal at C2.3,C3.4,C4.5,C5.6,and C6.7 level were lower than that at 1 year after operation with a significant difference.Except for C2,3 and C7T1 and level,the preoperative anteroposterior diameter and cross section area of spinal cord at C3,4,C4,5,C5,6,and C6,7 level were significantly lower than that at 1 year after operation.The average JOA score preoperatively was 8.9±1.7.The average JOA score at 3 months postoperatively was 13.1±2.0,which was significantly higher than that preoperatively.At 3 months postoperatively,the average improvement rate was 52.0％,and the superior rate was 52.3 ％.At 1 year postoperatively,the average JOA score was 13.3±2.1,which improved significantly from that preoperatively.The average improvement rate was 54.3 ％,and the superior rate was 61.9％.The VAS score at preoperatively was 3.0±2.4,and which was 2.7± 1.7 at 1 year postoperatively with no significant differences.At pre-operation,the level of Frankel classification was C level in one (4.8％) case,D level in 8 (38.1％) cases and E level in 12 (57.1％) cases.At 1 year postoperatively,the level of Frankel classification was C level in one (4.8％) case,D level in 6 (28.6％) cases and E level in 14 (66.7％) cases,compared with that at preoperatively,there was no statistically significant difference.One patients suffered from neurologic deterioration at 1 year after surgery and recovered after anterior cervical surgery.No other serious complications were occurred.Conclusion For the patients with multi-segmental cervical diseases accompanied cervical lordosis loss,effective spinal decompression by cervical posterior laminoplasty was feasible,and a good clinical efficacy was achieved.

Objective To explore the prognostic values of telomerase reverse transcriptase promoter (TERTp) mutation and 1p/19q co-deletion in newly-diagnosed O6-methylguanine-DNA methyltransferase (MGMT) promoter un-methylated/isocitrate dehydrogenase (IDH) wild-type glioblastoma multiform (GBM). Methods A total of 82 patients pathologically newly-diagnosed MGMT promoter un-methylated/IDH wild-type GBM, admitted to our hospitals from March 2016 to November 2018, were included in this study. TERTp mutations (TERTp wild-type and TERTp mutation [C228 mutation and C250 mutation]) in GBM specimens were detected by PCR sequencing, 1p/19q co-deletion in GBM specimens was detected by fluorescence in situ hybridization (FISH), and clinical data, adverse reactions and prognoses of patients with different molecular typing were compared. Results There were 33 patients in the TERTp wild type group with mean age of 48 years, and 49 patients in the TERTp mutation group with mean age of 59 years; the difference of age was significant (P<0.05); there were no statistical differences in gender distribution, Karnofsky performance status (KPS) scores, tumor sites and surgical resection degrees between the two groups (P>0.05). There were 8 patients with 1p/19q co-deletion and 74 patients without 1p/19q co-deletion; no significant differences in above clinical parameters were noted between the two groups. There were no statistically significant differences in the incidences of bone marrow suppression, digestive tract response and fatigue, disease progression rate, or survival rate between patients from TERTp wild type group and TERTp mutation group, and between patients with 1p/19q co-deletion and patients without 1p/19q co-deletion (P>0.05). No significant differences in above clinical parameters, disease progression rate, and survival rate were noted between patients with C228 mutation and C250 mutation (P>0.05). Conclusion TERTp typing and 1p/19q co-deletion status do not have prognostic value in newly-diagnosed MGMT un-methylated/IDH wild-type GBM patients; patients with TERTp mutations have older age than wild-type patients; patients with C250 mutation trend to have higher survival rate than those with C228 mutation.