Objective To investigate the genetic polym orphism s of 21 autosom al STR loci of Fujian H an population and evaluate the forensic application value of GlobalFilerTM E xpress kit. Methods A m plified w ith GlobalFilerTM E xpress kit, DNA sam ples were obtained from 741 unrelated individuals of Fujian H an population. The population genetics param eters of 21 autosom al STR loci were calculated. Results The 21 autosom al STR loci were found to be no deviation from Hardy-Weinberg equilibration (P>0.05) and relatively abundant in high polym orphism . H eterozygosity ranged from 0.589 to 0.914, pow er of dis-crim ination ranged from 0.754 to 0.992, polym orphic inform ation content ranged from 0.520 to 0.940, and pow er of exclusion ranged from 0.278 to 0.825. The SE33 locus was the highest degree in poly-m orphism . Conclusion The 21 STR loci of GlobalFilerTM E xpress kit have high value in discrim ination pow er and can be useful in personal identification and paternity test in Fujian H an population.

Objective To study the effect of infrasound on expression of calmodulin-dependent protein kinase II (CaMKII) and tau pro-tein in hippocampus of rats. Methods Fifty-six male Sprague-Dawley rats were randomized into control group (n=8), 1-day group (n=8), 7-day group (n=8) and 14-day group (n=32), and the 14-day group was subgrouped as 1-hour, 6-hour, 24-hour, 48-hour subgroups, naming after the time after infrasound exposure, 8 in each subgroup. All the test groups were put in an infrasound field with 8 Hz, 130 dB for 2 hours daily, while the control group was put in the infrasound instrument without infrasound exposure for 2 hours daily. The expression of pT286-CaMKII and tau protein in hippocampus was detected with immunohistochemisty, Western blotting and enzyme-linked immunoabsor-bent assay. Results The expression of pT286-CaMKII was the most in 14-day group (F>14.912, P<0.001), as well as the expression of tau pro-tein (F>36.229, P<0.001), and secondary in 7-day group (P<0.05). For 14-day group, the expression of tau protein was the most in 1-hour and 6-hour subgroups, and dropped down in 24-hour subgroup, although more than that in the control group (P<0.05). Conclusion Exposure of 8 Hz, 130 dB infrasound may induce phosphorylation of CaMKII and tau protein, and the expression of tau protein in hippocampal cells in rat, which may disturb their learning and memory function.

Objective To investigate the feasibility of hydrogen proton magnetic resonance spectroscopy (1 H-MRS)for detection of Wallerian degeneration of the pyramidal tract after cerebral infarction.Methods Multiple metabolic indices including NAA,Cho, Cr of the bilateral cerebral peduncle were detected by using 1 H-MRS in 1 5 patients with unilateral middle cerebral artery infarction and 1 5 age-matched healthy volunteers,NAA/Cr,Cho/Cr were also calculated.Comparing the difference between cerebral infarction group and the control group ,the ROC curve was analyzed.Results The values of NAA/Cr in the ipsilateral cerebral peduncle of cerebral infarction patients were significantly lower than that of the contralateral,and there were significant differences between the two groups(P <0.05).The values of NAA/Cr in the ipsilateral cerebral peduncle of cerebral infarction patients decreased (P <0.05),as compared with that of the control group.The area under the ROC curve was 0.947,the truncation point was 1.63.The NAA/Cr val-ues of the contralateral cerebral peduncle of cerebral infarction patients had no significant differences compared with the control group (P >0.05),the Cho/Cr values of the ipsilateral and the contralateral cerebral peduncle had no significant difference compared with the control group (P >0.05).Conclusion 1 H-MRS can detect Wallerian degeneration of the pyramidal tract after cerebral infarction.

Objective To investigate the clinical features of papillary thyroid microcarcinoma(PTMC) and the risk factors of central lymph node metastasis (CLNM) in PTMC patients.Methods The clinical data of 855 patients with PTMC who underwent prophylactic central lymph node dissection were retrospectively reviewed.Results In the present study,the rate of CLNM was 21.9％ (187/855) in PTMC patients.In the univariate analysis,the incidence of CLNM was significantly higher in male patients,age ＜ 45 years,tumor size ＞ 5 mm,capsular invasion,multiple tumor and intracapsular spread (31.4 ％ vs.19.5 ％,x2 =11.429,P =0.001;29.3 ％ vs.15.9 ％,x2 =22.416,P =0.000;30.0％ vs.14.3％,x2 =30.669,P=0.000;29.4％ vs.16.8％,x2 =19.233,P =0.000;30.0％ vs.19.9％,x2 =8.205,P =0.004;42.9％ vs.21.3 ％,x2 =5.549,P =0.018,respectively).Multivariate analysis showed that male gender,age ＜ 45 years,tumor size ＞ 5mm,multiplicity and capsular invasion were independent risk factors for CLNM in PTMC patients (95％ CI:0.380-0.834,0.349-0.693,1.450-3.060,1.078-2.229,1.024-2.373,respectively).Conclusion A routine prophylactic central lymph node dissection should be considered particularly in male PTMC patients with age ＜45 years,tumor size ＞5 mm,capsular invasion and tumor multiplicity.

Objective To investigate the prognosis relevant factors of laryngeal squamous cell carcinoma (LSCC).Methods From January 2013 to December 2013,the clinical data of 71 patients with LSCC who were initially treated in Zhejiang Cancer Hospital were retrospectively analyzed.Results Univariate analysis showed that there were statistically significant differences in survival rate between the group of supraglottic type and glottic type (60.0% vs.86.3% ,χ2 =6.284,P<0.05),the group of N0 and N+(41.7% vs.86.4% ,χ2 =16.803,P<0.01), the group of early and late stage(93.6% vs.50.0% ,χ2 =19.854,P<0.01).There were no statistically significant differences in survival rate between the group of age ≤50,>50-60,>60-70 and >70(88.9% vs.88.2% vs. 79.3% vs.62.5% ,χ2 =3.909,P>0.05),the group of T1+T2 and T3+T4(83.6% vs.62.5% ,χ2 =3.623,P>0.05),the group of high,medium,low differentiated and unsigned(75.0% vs.69.7% vs.83.3% vs.91.7% ,χ2 =3.780,P>0.05),the group of surgery,radiotherapy and surgery+radiotherapy (74.3% vs.90.9% vs.71.4% , χ2 =2.437,P>0.05).Multivariate analysis showed that age( P =0.003),treatment( P =0.048) had significant effect on the prognosis of patients,but tumor location(P=0.766),T stage(P=0.677),N stage(P=0.482),clinical stage(P=0.825),the degree of pathological differentiation(P=0.206) had no significant effect on the prognosis of patients.Conclusion More aggressive treatment should be supplied for patients with N+,advanced clinical stage and age whom the prognosis are usually poor. In addition, the proportion of tracheal tube extraction should be appreciated.