Objective To explore the characteristics of calcifying pseudoneoplasm of the neuraxis ( CAPNON) , and to improve the di-agnostic level and standard of treatment. Methods The clinical traits, imaging features and curative effect of one case of CAPNON who were treated in our departmen were analyzed combined with the pathological analysis and literature review. Results Transient back pain was the only clinical presentation of the patient. CT images showed obvious calcification. MRI showed low signal in T1-weigthed images and T2-weighted images. Examined with the contrast-enhanced MR images, the lesion showed inhomogeneous enhancement. No nervous symptom newly occurred in the 6-month follow-up. Conclusion Symptoms of patients with CAPNON are generally related to local compression or irri-tation of the adjacent tissue. CAPNON should be highly suspected in patients with dense calcification in the CT combined with low signal in T1-weigthed images and T2-weighted images and rim or internal inhomogeneous linear enhancement in the MRI. The final diagnosis depends on the histopathological analysis, and surgical resection is the major therapy.

BACKGROUND:Regulatory T cels (Treg) are classified into two subsets, nature Treg (nTreg) and induced Treg (iTreg). Although there is consensus that CD4+CD25+FoxP3+CD127-is the widely accepted phenotype of Treg, it remains unclear what is the difference in phenotypes including cytokine patterns of nTreg and iTreg. OBJECTIVE:To understand and compare the plasticity of nTreg and iTreg and to search the exact mechanism of cytokine secretion in Tregs. METHODS: We investigated the frequency and cytokine pattern of CD4+CD25+FoxP3+CD127-nTreg in freshly separated peripheral blood mononuclear cels of five healthy individuals using 8-color fluorescence flow cytometry (FACSCanto II). Subsequently, after 9 days of alostimulation in mixed lymphocytes, the frequency and cytokine pattern of CD4+CD25+FoxP3+CD127-iTreg were determined and analyzed. RESULTS AND CONCLUSION:In fresh cels, (1.5±0.70)% of CD4+ T cels were CD4+CD25+FoxP3+CD127- nTregs. Almost al these cels expressed interferon (IFN)-γ-, interleukin (IL)-2- or transforming growth factor-β+, and partial cels expressed IL-10+ or IL-10-. After 9-day alostimulation, the number of CD4+CD25+FoxP3+CD127- iTreg expressing IFN-γ+, IL-2-, IL-2+, IL-10+ or TGF-β+increased strongly. The main subsets of human nTregs were CD4+CD25+FoxP3+CD127-IFN-γ-IL-2-IL-10+TGF-β+and CD4+CD25+FoxP3+CD127-IFN-γ-IL-2-IL-10-TGF-β+ T cels. The proportion of each subset in CD4+ T cels was (1.1±0.59)% and (0.39±0.16)%, respectively. Whereas the main subsets of human iTregs were CD4+CD25+FoxP3+CD127-IFN-γ+IL-2-IL-10+TGF-β+ and CD4+CD25+FoxP3+CD127-IFN-γ+IL-2+IL-10+TGF-β+. Human nTregs were characterized as IFN-γ-IL-2- double negative, producing IL-10 and TGF-β or only TGF-β without IL-10, and not proliferatingin vitro. During the alostimulation in mixed lymphocytes, IFN-γ+ iTregs proliferated remarkably. One-third of IFN-γ+ iTreg expressed IL-2+, and two-thirds of IFN-γ+ iTregs expressed IL-2, both of which produce IL-2 and TGF-β. Our results imply that CD4+CD25+FoxP3+CD127- Treg are potentialy immunosuppressive probably because of their mandatory TGF-β and optional IL-10 production.

Objective To review the first case of paired-exchange kidney transplantation between two couples in China.Methods In April 2006,two cases of paired-exchange living kidney transplantations were successfully performed.Husband 1 in blood type O received a kidney donated from husband 2 in blood type O,while wife 2 in blood type A received a kidney from wife 1 in blood type A.Results The transplantation was performed smoothly.Renal graft in husband 1 functioned for 21 months,and the recipient died at 9th month due to infection.Graft survival and patient survival in wife 2 were 30 month and 31 month respectively.Conclusion Paired-exchange of living-related kidney donation and transplantation,as an effective pathway to resolve the shortage of organ,could be programmed with cautious medical guideline,ethical consideration and legal framework in China.

Objective To investigate the effect of sarpogrelate, a specific 5-HT2A receptor blocker,on fibrosis past acute rejection of abdominal aortic allotransplantation in rats. MethodsThe rat models of abdominal aortic transplantation were divided into three groups: allograft control group (Wistar→ SD), isograft control group ( SD→ SD) and sarpogrelate-treated group (Wistar→ SD).Sarpogrelate-treated group receivedintragastric administration of sarpogrelate every day. The pathologic and immunohistochemical findings of the transplant aorta were observed at 14th and 60th day after transplantation. ResultsAt 14th day, visible acute rejection could be observed in allograft control group,but not in isograft control group. At 60th day, vascular intimal index of sarpogrelatetreated group was significantly lower than that in allograft control group[( 16. 71 ± 3. 94)％ versus (62. 41 ± 6. 54)％ ,P＜0. 05). The expression of PCNA and α-SMA in sarpogrelate-treated group wasalso significantly lower than that in allograft control group[(7. 37 ± 4. 61)％ versus (22. 43 ±3.40)％,(8.21 ± 3. 11)％ versus. (23.70 ± 2.78)％, P＜0.05, respectively). Conclusion The expression of PCNA and α-SMA of the transplant aorta could be suppressed by sarpogrelate, and sarpogrelate could relieve the fibrosis past acute rejection of aortic allograft.

Objective To investigate the correlation factors of neonatal lenticulostriate vasculopathy. Method Four hundred and forty-seven newborns from Guangdong Women and Children Hospital were enrolled in this study. Clinical data of the newborns were obtained . Brain ultrasound studies of lenticulostriate artery were performed on the newborns. The logistic regression was performed for screening the correlation factors of neonatal lenticulostriate vasculopathy (P < 0.05). Results Results of the univariate logistic regression reveal the correlation factors tcontributing to LSV include congenital cytomegalovirus infection、neonatal asphyxia、congenital heart disease (CHD),hypertensive disorder in pregnancy (P < 0.05, respectively). Multivariate logistic regression analysis was performed on these factors. The congenital cytomegalovirus infection, neonatal asphyxia, CHD,hypertensive disorder in pregnancy were significantly associated with LSV (P < 0.05). Conclusion The congenital cytomegalovirus infection,neonatal asphyxia,CHD,hypertensive disorder in pregnancy are the correlation factors of neonatal lenticulostriate vasculopathy. LSV could be a predictive marker for the future development of neuropsychiatric disorders. The brain ultrasound studies of lenticulostriate artery is suggested to be performed on all infants with the correlation factors.

Objective To analyze the nucleotide sequences and genetic polymorphisms of UL138 gene of low passage human cytomegalovirus ( HCMV) strains isolated from infants in Guangzhou province. Methods The low passage strains of HCMV were isolated from urine samples of 10 infants with HCMV in-fection in Guangzhou province and identified by multiplex PCR.The UL138 genes were amplified, cloned and identified with sequencing.The sequences were analyzed together with the homologous sequences of 10 clinical isolates published in GenBank.The sequences of UL138 genes were analyzed by using bioinformatics softwares for investigation of the post-translational modification sites, isoelectric points and second structures of UL138 proteins.Results Three low passage strains of HCMV ( D2, D3 and D52) were isolated from in-fants with congenital HCMV infection.The complete sequences of UL138 genes of the three strains were sub-mitted to GenBank after sequencing identification with the GenBank accession numbers of DQ180375, DQ180387 and DQ180359, respectively.The UL138 gene sequences of the three clinical isolates were high-ly conservative.Among the 841 base pairs of the UL138 gene sequences, mutations were identified in 16 sites with base substitution, no any insertion and deletion mutation was found.The 16 mutations resulted in 7 amino acid changes.No additional or deleted sites were found with regard to the post translational modifi-cation sites of UL138 protein in all clinical isolates except the Toledo strain.The isoelectric point of UL138 protein was 6.51 for all clinical isolates.Conclusion The UL138 genes and the deduced amino acid se-quences of HCMV strains isolated from infants in Guangzhou were highly conservative, regardless of the poly-morphism of UL138 gene.This study paved the way for further investigation on HCMV infection and its path-ogenic mechanism.

Objective To investigate the polymorphism of human cytomegalovius UL143 gene of low passage clinical isolates in Guangzhou,China.Method PCR was performed to amplify the entire HCMV ULl43 gene region of 3 clinical isolates,which had been proven by multiplex PCR.The amplification products were cloned into pMD18-T-Vector and subjected to sequencing.The result of DNA sequences were analyzed together with the one of published homologous sequences in GenBank from 14 clinical isolates.Result There were several stop codons in UL143 gene due to a base deletion in open reading frame (ORF) of D3 isolate,which could lead to produce non-functional protein.UL143 ORF of Toledo isolate consisted of 279 nueleotides,encoding a protein with 92 amino acids.UL143 ORFs of other isolates consisted of 252 nueleotides,encoding a protein with 83 amino acids.The DNA sequences were quite conserved and all the variations were base substitution.The amino acid sequences of different isolates were highly conserved.with variation of 1.2%-2.4%.There were no additional or deleted sites of post translational modification of UL143 protein in all clinical isolates except Toledo isolate.There were some differences in the secondary structure among different isolates.The isoelectric point of UL143 protein of all clinical isolates except Toledo isolate was 8.75.Conclusion All DNA and deduced amino acid sequences of UL143 gene shared great similarity among HCMV clinical strains regardless of their polymorphism.

Vaccination is the most effective way to prevent influenza and severe outcoming caused by influenza viruses.Health care workers(HCW) are exposed to patients with influenza and they are at high risk of occupationally acquired influenza and of causing nosocomial infection among patients,increasing the incidence rate,the risk of severe and death of patients.Improving the influenza immunization in HCW can not only reduce the prevalence of themselves and keep a weel-oiled of health care facilities during the influenza seasons,but also reduce the risk of severe and death among patients and increase the influenza vaccine uptake in whole population.At present,the influenza immunization coverage of HCW is low.The obstacles and myths of influenza vaccine are barriers for vaccine uptake among HCW.The various strategies are critical in order to improve the influenza coverage rates of HCW.

Objective To explore the correlation between fasting blood glucose (FBG) and hepatocarcinogenesis.Methods The retrospective cohort study was conducted.The data of 94 264 participants who participated health examination at the Kailuan General Hospital of North China University of Science and Technology,Kailuan Linxi Hospital,Kailuan Zhaogezhuang Hospital,Kailuan Tangjiazhuang Hospital,Kailuan Fan'gezhuang Hospital,Kailuan Jinggezhuang Hospital,Kailuan Lyujiatuo Hospital,Kailuan Linnancang Hospital,Kailuan Qianjiaying Hospital,Kailuan Majiagou Hospital and Kailuan Branch Hospital from July 2006 to December 2015 were collected.There were 75 134 males and 19 130 females,aged (51:±:12)years,with a range of 18-98 years.All the subjects were allocated into 3 groups according to tertiles of FBG,including 31 083 with FBG ＜ 4.82 mmol/L in the T1 group,31 594 with 4.82 mmol/L≤ FBG ＜5.49 mmol/L in the T2 group and 31 587 with FBG ≥5.49 mmol/L in the T3 group.All participants received the same-order health examinations by the fixed team of doctors in 2006,2008,2010,2012 and 2014 at the same place.Epidemiological investigation,anthropometric parameters and biochemical indicators were collected.Observation indicators:(1) comparisons of clinical characteristics among the 3 groups;(2) follow-up and incidence of liver cancer;(3) situations of non-liver cancer death;(4) risk factors analysis affecting new-onset liver cancer;(5) comparisons of the prognostic value of FBG on liver cancer model;(6) effects of FBG on new-onset liver cancer using competing risk model.Follow-up using physical examination was performed to detect new-onset liver cancer and survival up to December 31,2015.The start time of follow-up was the first health examination in 2016 and the terminal event was new-onset liver cancer,loss of follow-up and death.Measurement data with normal distribution were expressed as Mean±SD,and comparisons among groups were analyzed using the one-way ANOVA.Measurement data with skewed distribution were described as M (range),and comparisons among groups were analyzed using the Kruskal-Wallis rank sum test.Count data were described as absolute number and percentage,and comparisons among groups were analyzed using the chi-square test.The cumulative incidence and mortality of new-onset liver cancer were calculated and incidence curve was drawn by the Kaplan-Meier method,and comparisons of incidences among groups were done by the Log-rank test.The incidence of liver cancer in patients with different levels of FBG was calculated by person-year incidence (incidence density).The hazard ratio (HR) and 95％ confidence interval (CI) of different levels of FBG (classification variable and continuous variable) on new-onset liver cancer were estimated by the COX proportional hazards regression models.Restrictive cubic spline regression was used to calculate the dose-response relation between the continuous FBG and the risks of new-onset liver cancer.The fitting degree of FBG on new-onset liver cancer model was calculated by the likelihood ratio test and akaike information criterion (AIC).The predictive power of different models was calculated using the C-statistics.The net effects of FBG on incidence of liver cancer were analyzed using cause-specific hazard function (CS) and sub-distribution hazard function (SD).Results (1) Comparisons of clinical characteristics among the 3 groups:gender (male),age,systolic pressure,diastolic pressure,waistline,body mass index (BMI),total cholesterol (TC),alanine aminotransferase (ALT),triglyceride (TG),cases with drinking,smoking,physical exercise,positive HBsAg and fatty liver were 23 567,(51±13)years,(128±21)mmHg (1 mmHg=0.133 kPa),(82±12)mmHg,(86± 10) cm,(24±3) kg/m2,(4.8± 1.2) mmol/L,17.12 U/L (range,12.21-24.01 U/L),1.18 mmol/L (range,0.82-1.75 mmol/L),5 080,9 423,4 779,724,7 591 in the T1 group,24 870,(50±12)years,(129±:20)mmHg,(83±12)mmHg,(86±10)cm,(25±3)kg/m2,(4.9±l.1) mmol/L,18.31 U/L (range,13.01-24.31 U/L),1.23 mmol/L (range,0.88-1.83 mmol/L),5 448,9 397,4 570,619,9 009 in the T2 group and 26 697,(53±11)years,(135±22)mmHg,(86±12)mmHg,(89±10)cm,(26±3)kg/m2,(5.1± 1.2) mmol/L,19.00 U/L (range,13.79-26.61 U/L),1.44 mmol/L (range,1.00-2.21 mmol/L),6 354,10 292,5 369,608,13 397 in the T3 group,showing statistically significant differences among groups (x2 =761.68,F=417.84,1 010.71,747.64,702.73,1 075.06,703.83,x2=447.44,2 109.38,165.97,66.69,78.90,15.50,2 576.95,P＜0.05).(2) Follow-up and incidence of liver cancer:all 94 264 participants were followed up for 817 475 person-year,with a total person-year incidence of 3.71/10 000 person-year,1.13/10 000 person-year in the female participants and 4.37/10 000 person-year in the male participants.The incidence density of liver cancer was 2.84/10 000 person-year,3.64/10 000 person-year,4.64/10 000 person-year in the T1,T2,T3 groups,respectively.The cumulative incidence was 2.76‰,3.90‰,4.90‰ in the T1,T2,T3 groups,respectively,showing statistically significant differences among groups (x2=11.95,P ＜ 0.05),showing no statistically significant difference between T1 and T2 groups (x2 =2.73,P＞0.05),showing statistically significant differences between T1 and T3 groups,between T2 and T3 groups (x2=11.56,4.10,P＜0.05).(3) Situations of non-liver cancer death:during the follow-up,6 880 of 94 264 participants had of non-liver cancer related death,with a non-liver cancer death intensity of 84.16/10 000 person-year.The non-liver cancer death intensity was 79.19/10 000 person-year,68.17/10 000 person-year,105.32/10 000 person-year in the T1,T2,T3 groups.The accumulative mortality was 78.90‰,67.80‰,104.40‰ in the T1,T2,T3 groups,respectively,showing a statistically significant difference among groups (x2 =1 231.46,P ＜ 0.05),showing statistically significant differences between T1 and T2 groups,between T1 and T3 groups (x2 =5.29,4.36,P＜0.05),showing no statistically significant difference between T2 and T3 groups (x2 =0.09,P＞ 0.05).(4) Risk factors analysis affecting new-onset liver cancer.Results of COX proportional hazards regression model analysis showed that continuous FBG was a related factor affecting new-onset liver cancer after adjustment of gender,age,BMI,ALT,drinking,smoking,physical exercise,positive HBsAg,fatty liver,liver cirrhosis,malignant tumor in immediate family (HR =1.06,95％ CI:1.01-1.12,P＜0.05).After ln transformation of FBG,ln FBG was a related factor affecting new-onset liver cancer (HR=1.81,95％ CI:1.21-2.70,P＜0.05).Results of restrictive cubic spline regression showed that continous FBG and ln FBG were nonlinear correlated with incidence of liver cancer (RCS_ S1_x2 =7.21,4.36,P＜0.05).After adding FBG as classification variable in the COX model,risk of new-onset liver cancer in the T2 and T3 groups was increased compared with the T1 group (HR=1.45,1.67,95％ CI:1.07-1.95,1.25-2.22,P ＜ 0.05).(5) Comparisons of the prognostic value of FBG on liver cancer model:multivariate model was constructed after adding risk factors of gender,age,BMI,ALT,drinking,smoking,physical exercise,positive HBsAg,fatty liver,liver cirrhosis,malignant tumor in immediate family,and C-value,-2Log L and AIC were 0.79,6 313.30 and 6 345.30 for the multivariate model.Then FBG variable was added into the multivariate model,and the C-value,-2Log L and AIC of the multivariate model + FBG model were 0.80,6 300.48 and 6 336.48,respectively,showing statistically significant differences compared with the T1 group (x2 =12.82,P＜0.05).(6) Effects of FBG on new-onset liver cancer using competing risk model.Results of competing risk model showed that the risk of new-onset liver cancer in the T2 group was not affected compared with the T 1 group (HR =1.42,95％CI:0.98-1.97,P＞0.05) and risk of new-onset liver cancer in the T3 group was increased compared with the T1 group with the SD model (HR=1.63,95％ CI:1.16-2.26,P＜0.05),after adjustment of gender,age,BMI,ALT,drinking,smoking,physical exercise,positive HBsAg,fatty liver,liver cirrhosis,malignant tumor in immediate family.In the CS model,the risk of new-onset liver cancer in the T2 group was not affected compared with the T1 group (HR=1.43,95％ CI:0.99-1.97,P＞0.05) and risk of new-onset liver cancer in the T3 group was increased compared with the T1 group (HR=1.65,95％ CI:1.18-2.23,P＜ 0.05).Conclusions The elevated FBG is an independent risk factor for the incidence of liver cancer.After considering the competitive risk of death,the risk effect of high-level FBG on the liver cancer still exists.

Objective: : Dermoid cysts are uncommon in spinal cord tumors, and the phenomenon of their spontaneous rupture into the syrinx cavity is quite rare. We aimed to analyze the imaging characteristics and etiologies, and propose some surgical strategies, for this uncommon phenomenon. Methods: : We retrospectively reviewed 14 cases with spinal dermoid cysts that ruptured into the cervical and thoracic syrinx cavity. There were six male and eight female cases, aged 21 to 46 years, who had lipid droplets in the syrinx cavity from C1 to L3. The dermoid cysts were always located at the conus. Based on patients’ complaints, clinical manifestations, and imaging results, we adopted tumor excision and/or syrinx cavity aspiration in one stage or multiple stages. Results: : Three patients had only a syrinx cavity aspiration surgery due to a history of dermoid cyst excision. Eight patients had dermoid cyst resection and syrinx cavity aspiration in one stage. One patient was operated upon in two stages due to the development of new symptoms at nine months follow-up. Two patients underwent only tumor resection since they did not show similar symptoms or signs caused by the cervicothoracic syrinx. The axial magnetic resonance imaging indicated that the lipid droplets were always not at the center but were eccentric. The clinical effect was satisfactory during the follow-up period in this group. Conclusion : The lipid droplets filled the spinal syrinx cavity, not entirely confined to the central canal. Based on the chief complaints and associated signs, we adopted different surgical strategies and had satisfactory clinical results.