Objective To evaluate the diagnostic value of dynamic contrast enhanced MRI (DCE-MRI)in angiogenesis and invasion of ovarian tumors .Methods 98 patients with pathological-confirmed ovarian tumors without any treatment underwent plain MRI and DCE-MRI before operation .The plain MR images and DCE-MRI data were retrospectively analyzed .Value of Ktrans and Ve was detected by pharmacokinetic model .The expression of VEGF and MMP-2 in ovarian tumors was examined by immunohistochemistry .The correlation between DCE-MRI parameters and immunohistochemical results was analyzed .Results The expression of VEGF and MMP-2 was sig-nificantly higher in the malignant group compared with that in the benign group (both P<0.05).The value of Ktrans and Ve was significantly lower in the benign group compared with that in the malignant group ( both P<0.05) .The value of Ktrans and Ve was positively correlated with the expression of VEGF and MMP-2.Conclusion DCE-MRI can noninvasively evaluate the angiogenesis and invasion of ovarian tumors in vivo , which has important signifi-cance for clinical treatment and prognostic assessment .

Objective To probe into the anatomy and clinical application of the facial nerve canal surface by multislice spiral CT image curved planar reformation. Methods Fifty patients with facial nerve disease were selected as study group from January to November in 2010, 50 healthy subjects were selected as control group, using models of multislice spiral CT scan for the patient, scanning from the upper edge of the orbital under external auditory canal edge of the connection as a horizontal line, ranging from the lower edge of mastoid process to the petrous bone on the edge of the data obtained in the Wizard workstation reconstruction. All the measurements were more than two measurements of the average physician. Results Normal facial nerve canal in control group could be displayed clearly in an image, display rate was 100.00%(50/50), and the segment data could be accurately measured; axial reconstruction, reconstruction of coronal and sagittal reconstruction of the three comparison of measured direction, fan sections, horizontal and vertical segments of the length and diameter were not significantly different (P＞0.05), and the first and second bending angle of bending angle was no significant difference (P ＞ 0.05 ). Compared with control group, the patients with vascular disease in study group showed significantly decreased rate, the difference was significant (P ＜ 0.05). Conclusion Curved planar reformation of multislice spiral CT diagnosis of facial nerve canal disease has great clinical significance, should be widely applied.

Objective To explore the association between genetic polymorphisms and haplotypes of tumor necrosis factor-related apoptosis inducing ligand (Trail) and ulcerative colitis (UC).Methods A total of 331 patients with UC and 832 age and sex-matched healthy controls were collected.After Trail gene was amplified by PCR,the genetic polymorphisms of three single nucleotides (G1525A/G1588A/C1595T) in 3' non coding regions of Trail gene were examined by direct sequencing.The relation between Trail haplotype and UC was analyzed.Results Compared with control group,the frequencies of variant allele A and genotype GA+ AA in Trail G1525A were significantly lower in UC group (both P＜0.01).The frequencies of variant allele A and T in Trail G1588A and C1595T were also significantly lower in UC group than that of control group,and the difference was statistically significant (both P ＜ 0.01 ).In mild and moderate UC patients,the frequencies of variant allele T and CT+TT in Trail C1595T were 49.15％ and 64.51％,in severe UC patients were 72.37％ and 84.21％,and the differences were significant between the two groups (OR=2.710 and 2.935,95％CI:1.598～4.596 and 1.188～7.249,all P ＜0.05).In severe UC patients,the frequency of variant allele A in Trail G1525A was 48.69％,which was higher than that of mild and moderate patients (35.16％,OR=1.750,95％CI:1.082～2.830,P=0.021).In UC group,the frequency of AAT haplotype was significantly lower than that of controls (43.09％ vs 58.41％,P＜0.01).The frequency of GAT haplotype was significantly higher in UC group (10.15％vs 0.18％,95％ CI:0.005 ～ 0.051,P＜ 0.01).Conclusion The genetic polymorphisms and haplotypes of Trail (G1525A/G1588A/C1595T) gene may be closely correlated with the susceptibility to UC.

Objective To use the nested PCR technology to diagnose and identify a case of imported Plasmodium ovale wallikeri subspecies .Methods Blood sample was collected from 1 case of initially diagnosed imported tertian malaria and performed the ex‐amination of microscopy ,rapid diagnostic tests (RDTs) and nested‐PCR .Moreover the sequencing was conduced .Results RDTs showed the negative result ;the ring form and trophozoite of Plasmodium could be observed in the blood smear by microscopy ;the Plasmodium ovale wallikeri subspecies specific primer rOVA 1v/rOVA2v was adopted for conducting nested PCR ,the specicific am‐plification band appeared at 760 bp ,after sequencing and Blast aligning ,its coincidence with the partial sequence of Plasmodium ovale wallikeri subspecies in the Genbank database was 99% .Conclusion This patient is the first case of Plasmodium ovale wallik‐eri subspecies infection in Hubei province by nested PCR and sequencing analysis .

Objective To analyze the malaria control measures and epidemic trend in Hubei Province from 1974 to 2015, so as to provide the evidence for malaria elimination path analysis. Methods The malaria control data in Hubei Province from 1974 to 2015 were collected and analyzed retrospectively by descriptive epidemiological methods. Results The epidemic pro?cess of malaria in Hubei Province was divided into four stages. From 1974 to 1979,it was high prevalence state of malaria,and the average annual incidence was 174.47/10 000. From 1980 to 1999,the main control strategies were to control the infection source and mosquitoes,and the average annual incidence was 17.30/10 000,significantly downward. From 2000 to 2009, through the surveillance of infection sources and controlling malaria outbreaks and strengthening the floating population manage?ment,the average annual incidence was 0.42/10 000. After 2010,followed by the elimination phase of malaria,the incidence continued to decline. In 2013,there was no local infection for the first time. The difference of average annual incidence among above?mentioned stages was statistically significant(χ2=1 254.36,P<0.05). Conclusions The malaria epidemic process in Hubei Provincial experienced the high epidemic stage,sharply drop stage,low incidence phase and the elimination phase. How?ever,the natural factors affecting malaria still exist. Therefore,strengthening the control of imported malaria and surveillance should be the main task in the process of eliminating malaria in the future.

Objective To understand the malaria epidemic situation in Hubei Province from 2010 to 2014,so as to provide the evidence for formulating the effective malaria elimination strategies and measures in this province. Methods The data from the Disease Reporting Information System of Chinese Center for Disease Control and Prevention were collected and analyzed with the descriptive epidemiological method for the epidemiological characteristics of malaria in Hubei Province from 2010 to 2014. Results A total of 997 malaria cases were reported in Hubei Province from 2010 to 2014,there were 618 cases of vivax malaria,352 cases of falciparum malaria,18 cases of Plasmodium ovale infection,and 9 cases of Plasmodium malariae infec?tion. Among all the reported cases,479 were local cases and 518 were imported cases. No local malaria cases were reported from Hubei Province since 2013. The overall imported malaria cases showed a gradual increasing trend from 2010 to 2014,the pro?portion of falciparum malaria increased quite significantly from 2010 to 2014. The malaria cases were mainly distributed in Xiangyang,Wuhan,Xiaogan,Yichang,Jingmen and Suizhou cities,reaching 81.85%of the cases of the whole province. There were 810 male cases and 187 female cases,with a sex ratio of 4.33∶1. The local malaria cases were mainly aged from 40 to 69 years,accounted for 78.29%of the total local cases,and 88.22%(457/518)of the whole local cases were concentrated in 20-49 age groups. The local cases were mainly farmers(67.01%). Among the imported malaria cases,the occupation distribution concentrated mainly on the worker,migrant worker,and farmer(63.90%). Conclusions The local malaria epidemic situation has been effectively controlled in Hubei Province,which reflects the initiative achievements of malaria elimination. However, there are still many imported malaria cases from abroad. Therefore,the imported malaria from abroad still remains the key of ma?laria control in Hubei Province.