1.Prevalence of latent tuberculosis infection and its risk factors among senior students from four primary schools in Shanghai
Tao LIN ; Yi HU ; Yun HOU ; Weili JIANG ; Tao TAO ; Hui MA ; Qi ZHAO ; Biao XU
Chinese Journal of Infectious Diseases 2011;29(3):148-153
Objective To investigate the prevalence of latent tuberculosis infection(LTBI),and to identify the risk factors in primary schoolchildren from Shanghai through the population-based field investigation combined with the tuberculosis infection enzyme-linked immunospot assay(T-SPOT.TB)assay.Methods The children in grade 4 and 5 were enrolled from four primary schools in Pudong new district and Yangpu district of Shanghai.Questionnaire interview was applied to investigate the soeiodemographic and clinical information related to LTBI.The T-SPOT.TB assay was used to detect LTBI in the enrolled subjects.Univaitate and multivariate analyses were used to identify the risk factors associated with LTBI among the primary schoolchildren.Results Totally 472 schoolchildren were enrolled in the present study,with 439(93.0%)being vaccinated with bacillus calmette-guerin (BCG) and ten (2.1%) having contact history with tuberculosis (TB) patients.Among the 472 eligible subjects,16(3.4%) children were T-SPOT.TB positive,who had no clinical symptoms andsigns relevant to TB and were defined as LTBI.The LTBI prevalence in BCG vaccinated and unvaccinated children were 2.7% and 12.1%,respectively (OR:6.972;95%CI:1.834-26.500);those in TB contacts and children without TB contact history were 30.0% and 2.8%, respectively (OR: 16. 38; 95% CI: 3. 692-72. 700). Conclusions The prevalence of LTBI among senior schoolchildren in Shanghai is 3.4%. BCG vaccination is protective for children from LTBI, while daily contacts with TB patients increases the risk of LTBI in schoolchildren.
2.Pharmacokinetics, pharmacodynamics, and bioequivalence study of SciLin TMR recombinant human insulin injection preparation
Tao YUAN ; Weigang ZHAO ; Yong FU ; Yingyue DONG ; Qi SUN
Chinese Journal of Clinical Nutrition 2016;24(1):22-27
Objective To study the pharmacokinetics and pharmacodynamics of recombinant human insulin preparations SciLin TM R and Humulin (R) R,and to evaluate their bioequivalence in Chinese healthy volunteers.Methods In this positive control,single dose,open label,randomized cross-over study,20 male healthy volunteers were recruited from March to October 2007,and tested on two experimental days with an interval of 7-14 days.The volunteers were divided into two groups with a random number table,one group was injected with SciLin TMR for the first time and Humulin (R) R for the second time,the other group was injected with the opposite.The pharmacokinetics and pharmacodynamic properties were evaluated by euglycemic glucose clamp study.Results Time to peak concentration [Tmax,(105.8 ± 19.1) minutes vs.(103.5 ± 18.1) minutes,P =0.389) and time to maximum glucose infusion rate [TGIRmax,(132.8 ± 16.8) minutes vs.(132.8 ± 18.6) minutes,P =0.697] for SciLin TMR and Humulin(R) R were similar.The relative bioavailability of SciLin TMR was (102.2 ± 7.6) %,and the relative biological effectiveness was (107.4 ± 18.8) %.The 90% confidence interval(CI) of peak concentration(Cmax) and area under the curve of blood glucose concentration at 0-10 hours (AUCIns 0-10) of SciLin TM R were 99.32 %-102.62 % (equivalent range 70%-143 %) and 98.98 %-104.99 % (equivalent range 80%-125%),respectively;90% CI of the maximum glucose infusion rate (GIRmax) and AUCGIR0-10 were 97.36% ~ 103.49% (equivalent range 70%-143%) and 98.72%-113.54% (equivalent range 80%-125%),respectively,indicating that SciLin TMR and Humulin (R) R was bioequivalent.There was no clinically significant abnormalities in the safety indexes before and after the tests.During the trial,no hypoglycemic events,allergic reactions,or local injection adverse reaction occurred.Conclusion The studied recombinant human insulin preparation SciLin TMR may be bioequivalent as Humulin (R) R.
3.Pharmacokinetics and pharmacodynamics of 40/60 premixed recombinant human insulin injection preparations
Tao YUAN ; Weigang ZHAO ; Yong FU ; Yingyue DONG ; Qi SUN
Chinese Journal of Clinical Nutrition 2016;24(1):1-7
Objective To study the pharmacokinetics and pharmacodynamics of the 40/60 premixed recombinant human insulin injection preparation,and to compare with 30/70 preparation,regular insulin,and neutral protamine Hagedorn (NPH).Methods In this positive control,single dose,open label,Latin square crossover study,20 male healthy volunteers were recruited from May 2006 to March 2007,and divided into four groups.On 4 test days,40/60 preparation,30/70 preparation,regular insulin,and NPH were administered to each of the 4 groups,the interval was 7-70 days before 2 test days.The pharmacokinetics and pharmacodynamics were evaluated by euglycemic glucose clamp technique.Results According to the analysis of variance,there were statistically significant differences in pharmacokinetics and pharmacodynamics of the 4 insulin formulations between the 4 groups (all P < 0.05).For the 40/60 premixed recombinant human insulin,the pharmacokinetic parameter time to peak (Tmax) and mean retention time (MRT) were (105.00 ±24.33) minutes and (321.77 ± 56.29) minutes,respectively;the glucose-lowering effects reflected by the pharmacodynamic parameter Tmax and MRT were (167.75 ± 26.48) minutes and (248.33 ± 14.96) minutes,respectively.Compared with 30/70 premixed recombinant human insulin,40/60 preparation showed no significant differences in the pharmacokinetics parameters of blood insulin concentration,including peak concentration [(91.67 ± 13.03) mU/L vs.(84.96 ± 14.75) mU/L,P =0.119],Tmax [(105.00 ± 24.33) minutes vs.(122.25 ± 39.35) minutes,P =0.128],MRT [(321.77 ± 56.29) minutes vs.(332.12 ± 49.20) minutes,P =0.645] and area under the curve in 0-16 hours [AUCIns 0-16,(24 918 ± 6 610)h · mU/L vs.(26 768 ± 8 032)h· mU/L,P=0.084];however,statistically significant differences were observed in AUCIns0-4 [(16 991 ± 3 673) h · mU/L vs.(12 407 ± 3 441) h · mU/L,P =0.042] and AUCIns 0-8 [(23 283 ± 4 939) h · mU/L vs.(19 397 ±5 314)h · mU/L,P =0.046].Pharmacodynamic parameters showed no statistically significant differences (all P > 0.05).Compared with 30/70 premixed insulin,the relative bioavailability of 40/60 premixed insulin was (118.9 ± 35.9) %,and the relative biological effectiveness was (106.6 ± 35.2) %.There was no clinically significant abnormalities in the safety indexes before and after the tests.No hypoglycemic events,allergic reactions,or local injection adverse reaction occurred in this trial.Conclusions The 40/60 premixed recombinant human insulin preparation demonstrated different properties in insulin absorption in 8 hours after injection compared with the 30/70 preparation,mainly because of the difference in proportions of short-and intermediate-acting insulin in the mixture.This new premixed insulin may provide a new option for personalized diabetes management.
4.CT and MRI features analysis of pineocytoma: Report of 6 cases
Lei TAO ; Rongfeng QI ; Xiaoqing CHENG ; Yane ZHAO ; Guangming LU
Chinese Medical Equipment Journal 2017;38(5):82-85
Objective To improve diagnosis accuracy of pineocytoma (PC) by joint analysis of CT,MRI imaging features and differential diagnosis with other lesions in pineal region.Methods Totally 6 pineocytoma patients confirmed surgically and pathologically had their clinical history,CT and MRI data collected and analyzed on lesion morphology,cystic solid changes,existence of necrosis,complications of hemorrhage and or calcification,MRI and enhanced scan of solid component,complications with hydrocephalus and etc.Results Plain scan found 1 case of solid nodule and 5 cases of cystic-solid nodules,2 cases with clearly-bordered lesions and 4 one not as well as 4 cases with significant hydrocephalus and 2 ones with light hydrocephalus.Enhanced scan showed 5 cases of moderate to marked enhancement and one case with no obvious enhancement.CT examination proved there were 1 case of calcification and 1 case of hemorrhage.Conclusion Pineocytoma has the characteristics of benign tumor,and has to be differentiated with other tumors frequently occurring in this region in case of obvious clinical signs due to crushing brain parenchyma or blocking aqueduct cerebri by oversized lesions.
5.Anatomical study of the processing line and the range of thoracolumbar vertebral pedicle channel for vertebral reconstruction
Yibo ZHAO ; Bin ZHAO ; Yongfeng WANG ; Xiangdong LU ; Xiaofeng ZHAO ; Qi CHEN ; Tao ZHANG
Chinese Journal of Orthopaedics 2013;33(12):1218-1222
Objective To evaluate the processing line and the range of thoracolumbar (T10-L2) vertebral pedicle channel for vertebral reconstruction.Methods The thoracolumbar vertebrae (T10-L2) of thirty fresh specimens were performed CT scan,slice thickness of 1 mm without interval.Each vertebral body was reconstructed using the software Mimics 10.0 and measured each vertebral body pedicle axis length (L),pedicle length (L0),width (W) and height (H0),vertebral height (H),pedicle entry point in the sagittal plane angle (α) and the pedicle entry point in the cross-section angle (β),and further calculated the volume through vertebral pedicle channel for vertebral reconstruction.Results The average thoracolumbar (T10,T11,T12,L1,and L2) vertebral pedicle axis length was 32.64±5.66,31.80±6.41,38.46±3.52,40.31±4.39,and 42.72±3.36 mm prospectively.The average vertebral pedicle length was 12.38±2.06,11.77±2.15,14.63±2.34,15.46±3.04 and 14.37±1.64 mm.The average pedicle width was 5.09±0.26,5.79±1.10,7.35±1.87,7.17±0.69 and 7.14±0.84 mm.The average pedicle height was 9.76±1.43,10.83±0.77,11.16±0.78,11.33±1.26 and 11.16±0.96 mm.The average vertebral height was 18.12±0.88,19.48±1.02,21.25±1.27,22.88±0.68 and 23.20±0.93 mm.The average α angle was 25.06°±3.84°,30.87°±7.28°,25.12°±5.18°,20.55°±1.54° and 21.74°±2.58°.The average β angle was 43.60°±4.52°,49.48°±10.30°,41.97°±5.19°,40.29°±6.49° and 42.85°±6.47°.The average volume of one side of vertebral body after vertebral reconstruction respectively was 1.02±0.36,1.30±0.43,1.96±0.67,1.84±0.48 and 1.94±0.41 cm3,the corresponding percentage of total vertebral volume was 53.95%,55.68%,52.67%,49.53% and 48.14%.Conclusion It is possible to use the pedicle channels for vertebral body reconstruction,reduction the end-plates and filling bone graft inside vertebral body.
6.?-Synuclein phosphorylation takes part in mouse dopaminergic neuron protection
Qi LIU ; Chunli DUAN ; Bo WU ; Chunxiang FAN ; Tao ZHANG ; Huanying ZHAO ; Chunli ZHAO ; Hui YANG
Basic & Clinical Medicine 2006;0(06):-
Objective To study the role of phosphorylation at Serine 129 in regulating the neurotoxicity of ?-synuclein. Methods Wild type and phosphomimic mutant ?-synuclein genes were over-expressed in mouse dopaminergic cells MN9D using retrovirus. The cell viability was examined using CCK-8 assay and cell morphology was observed by immunofluorescence microscopy. Results The result of real time PCR showed that WT/?-SYN and S129D/?-SYN genes were overexpressed in MN9D as compared to uninfected MN9D and vector control group(P
7.Evaluating the effect of rosiglitazone on Insulin resistance with a hyperinsulinemic euglycemic clamp in patients with type 2 diabetes
Weigang ZHAO ; Tao YUAN ; Yong FU ; Yingyue DONG ; Guohua YANG ; Qi SUN ; Heng WANG
Chinese Journal of Clinical Nutrition 2009;17(3):133-135
emic euglycemic clamp quantitively.
8.The Specific Immune Response Elicited by Recombinant CRT120/HPV6bE7 DNA Vaccine in Mice
Yan XU ; Hao CHENG ; Kejia ZHAO ; Jun YE ; Xing ZHANG ; Tao SONG ; Minli CHEN ; Qi WANG
Chinese Journal of Dermatology 2003;0(12):-
Objective To investigate the cellular immune response to the recombinant DNA vaccine CRT120/HPV6bE7 in mice. Methods The recombinant encoding HPV6bE7, linked with CRT120, was constructed in pcDNA3.1 eukaryotic vector with the report gene GFP. The pcDNA3.1-GFP -HPV6bE7 was transfected into B16 cells by a lipofectamine kit. The C57BL/6 mice were vaccinated with recombinant DNA plamids. The T-cell phenotype in the peripheral blood lymphocytes of the immunized mice was measured by flow cytometry. The CTL activity of the lymphocytes from the spleens and lymph nodes, and the levels of IL-2 and IFN-? were analyzed. Results The constructed recombinant plasmid CRT120/HPV6bE7 was analyzed. Positive transfected cell clones were established and could stably express the target gene HPV6bE7. Compared with HPV6bE7, CRT120/HPV6bE7 plasmid enhanced to a greater extent CD8+ T-lymphocyte differentiation, the number of TCR?? T-lymphocytes and the levels of IL-2 and IFN-? (all P
9.Surgical modalities and prognosis in elderly patients with gastric cancer
Xianglong CAO ; Tao YU ; Hong TANG ; Qi AN ; Hua YANG ; Gang ZHAO
Chinese Journal of General Practitioners 2016;15(9):693-697
Objective To evaluate the surgical modalities and prognosis in elderly patients with gastric cancer.Methods Sixty three gastric cancer patients aged ≥≥ 75 years underwent radical surgery,with D0 + D1 resection in 32 cases and D2 resection in 31 cases,in Beijing Hospital from January 2005 to December 2009.Results More lymph nodes were dissected in D2 group than those in D0 + D1 group (27.42 ± 12.75 vs.14.59 ± 12.11,t =-4.095,P < 0.05).There was no significant difference in postoperative complication rate [25.81% (8/31) vs.31.25% (10/32),x2 =0.095,P > 0.05] and perioperative death rate [3.23% (1/31) vs.6.25% (2/32),x2 =0.324,P > 0.05] between two groups.The 5-year survival rate was higher in D2 group than that in D0 ± D1 group (47.3% vs.21.4%,x2 =6.346,P < 0.05).The 5-year survival rate was higher in POSSUM score (PS) < 20 group than that in PS≥20 group (46.3% vs.11.1%,x2 =5.492,P <0.05).In PS≥20 group,postoperative complication rate did not increase after D2 radical resection(1/8 vs.3/10,x2 =0.824,P > 0.05).Univariate analysis showed that PS < 20 was associated with the prognosis of patients (x2 =5.492,P < 0.05).Cox proportional hazards model showed that lymph node metastasis (OR=4.103,95% CI:1.790-9.405,P < 0.05) and D2 radical gastrectomy(OR =0.313,95% CI:0.158-0.620,P < 0.05) were the independent factors associated with the prognosis of patients aged ≥ 75 years with gastric cancer (all P < 0.05).Conclusion Standardized D2 lymph node dissection is beneficial for gastric cancer patients aged ≥75 years.PS < 20,lymph node metastasis and D2 radical gastrectomy are associated with the prognosis of patients.
10.Effects of fluoride on the expression of vascular endothelial growth factor in fibroblast of mice
Ling, QI ; Chun-hong, CHEN ; hui, LIU ; Zhi-tao, ZHAO ; Ling, JING
Chinese Journal of Endemiology 2010;29(2):130-134
Objective To observe the expression of vascular endothelial growth factor(VEGF) mRNA and protein in fluoride(F~-) treated fibroblast(FB) of mice in planar(2D) and FBs populated collagen lattice(3D) culture systems and to further explore the effects of VEGF on the osteogenic action of FB. Methods FB were divided into 0 (control group), 0.0001,0.0010,0.1000,1.0000,10.0000 and 20.0000 mg/L groups(F~-). The levels of VEGF mRNA and protein at 48 h were measured by using RT-PCR, ELISA and immunohistochemistry (IHC) methods. Results The expression of VEGF mRNA increased obviously in group of 0.1000 mg/L(1.08 ± 0.09) in 3D FB compared with the control group(0.93 ± 0.02, all P < 0.05). Fluoride increased the content of VEGF protein obviously in groups of 0.1000,1.0000,10.0000 mg/L(0.19 ± 0.02, 0.26 ± 0.01 and 0.32 ± 0.01 ), higher than that in 2D FB culture supematant in the control group(0.14 ± 0.01, all P < 0.05) ; and in groups of 0.1000, 1.0000 rag/L(0.59 ± 0.06 and 0.52 ± 0.03) it was higher than that in 3D FB culture supematant in the control group(0.37 ± 0.05, all P< 0.01 ). The IHC results showed that the VEGF positive staining cells increased significantly in group of 0.001 mg/L (0.45 ± 0.05) in 2D FB when it was compared with control group(0.36 ± 0.03, P< 0.05); and in groups of 0.0010, 0.1000, 1.0000 rag/L(0.62 ± 0.04,0.70 ± 0.06 and 0.65 ± 0.07) are it was higher than that in 3D FB control group (0.44 ± 0.04, P < 0.05 or < 0.01 ). Conclusions The higher expression of VEGF mRNA and protein in 2D and 3D FB induced by fluoride may play an important role in stimulating the osteogenesis ability in FB.