Objective To Clone,express,purify 38 ku protein of mycobacterium tuberculosis,to study its immunological characteristics,and to evaluate its potenial value for serodiagnosis of tuberculosis.Methods Extract DNA from standard strain of H37Rv as the template,amplify gene of 38 ku protein by PCR,insert to PET-30a(+)and construct the recombinant plasmid,express 38 ku protein in E.coli BL21(DE3),purify by Nickel affinity chromatography,at last get target proteins of higher purity,analyze its immol/Lunological characteristics by Western blotting and ELISA technology from Feb.2003 to Mar.2004. Results The clone was analyzed at the nucleotide lever and showed the same DNA sequence coding for natural 38 ku protein. The recombinant protein expressed in inclusion body in E.coli BL21(DE3). The purity of terget protein was 92.7% by Nickel affinity chromatography,Western blotting assays showed that the recombinant protein had satisfactory antigenicity . 38 ku protein detected TB postive and negative refference serum based on the mechanism of indirect ELISA,results showed that the sensitivity was 80.5%(33/41)and the specificity reached to 96%(25/26).Conclusion The recombinant protein expressed in inclusion body in E.coli BL21(DE3)and had satisfactory antigenicity,and might be selected as one of serodiagnostic antigen of tuberculosis.

Objective To develop techniques based on polymerase chain reaction(PCR) which can detect 2 of most common deletional ? thalassemia ? 3.7 deletion and ? 4.2 deletion in China accurately and speedily. Methods Two groups of primers were designed and synthesized. PCR conditions were optimized. The PCR pro ducts were analysed by 1.0% agarose gel electrophoresis. The gel was stained by EB and photographed using an UVP gel documentation. Results PCR product of a 1 700 bp DNA fragment with primers A′, B′, C3 indicates the ? 3.7 deletion while a 1 900 bp fragment indicates a normal or wild type of ? globin gene. Occurrence of the 1 700 bp and 1 900 bp simultaneously indicates a heterozygous of the ? 3.7 deletion. Neither of the 2 bands was presented, indicating a homozygous of South East Asia type of deletion (-? SEA ). According to patterns of 1 580 bp and 1 180 bp hand amplified by a PCR with primer G′, E, F′, we detected the ? 4.2 deletion and distinquished its heterozygous and homozygous. Conclusions The 2 PCR based techniques developed in our laboratory are accurate, simple, well reproducible and easy to use for screening of the 2 deletion types of ? thalassemia determinants.

Objective To retrospectively study the results of endoscopic manifestation pathology,and treatment of colonic polyps. Methods Clinical data of 121 patients diagnosed with colonic polyps and treated by endoscopy between November 2002 and September 2009 were studied. Complete colonic investigation was done by Olympus PCF240I electron endoscopy. Colonic polyp excision was done by high frequency electric coagulation. Results All patients had bloody stool with mucus for 1 week to 8 years. Ninty four(77.7%)patients had a single polyp,6(5.0%)had two polyps,21(17.3%)with multiple polyps,and 5 patients had familial polyposis coli. The size of the polyps ranged from 0.3 cm to 4 cm and the morphology of Yamada Ⅰ to Ⅳ. The pathological changes were juvenile polyps,inflammatory polyps,polypoid formation,and canalicular adenoma. Most common pathology types were Yamada Ⅳ and juvenile polyps,107 of the 121 patients(88.4%)had juvenile polyps,and one was found to have malignant transformation. 115 patients accepted high frequency electric coagulation excision under general anesthesia,without complication. Conclusions Colonic polyp is one of the common diseases in children. Children should be checked by total colonoscopy in time when they present with bloody stool,anemia,rectal polyps prolapse or intussusception. Polypectomy under endoscope is a most safe and reliable treatment method when the diagnosis is confirmed. For isolated juvenile polyp,regular recheck is not necessary after polypectomy except when bloody stool recurs. Regular follow up by colonoscope is necessary for juvenile polyp combined with adenoma and adenomatous polyps. Colonoscope is necessary at any time when bloody stool occurs. Familial polyposis coli is difficult to be treated by endoscopy,thus surgical procedure is suggested.

A non-linear rectification based on immune genetic algorithm (IGA) is proposed in this paper, for the shortcoming of the non-linearity rectification. This algorithm introducing the biologic immune mechanism into the genetic algorithm can restrain the disadvantages that the poor precision, slow convergence speed and early maturity of the genetic algorithm. Computer simulations indicated that the algorithm not only keeps population diversity, but also increases the convergent speed, precision and the stability greatly. The results have shown the correctness and effectiveness of the method.
Algorithms ; Computer Simulation ; Immunity ; genetics

Objective To explore the effects of hyperlipidemia on serum levels of matrix metalloproteinase-9(MMP-9) and C-reactive protein(CRP) in the patients with cerebral infarction(CI).Methods Testing the serum levels of MMP-9,CRP and triglyceride(TG) in 36 CI patients [with high level TG(n=18) and with normal TG(n=18)] and 17 normal controls(NC group).The relationship among the serum levels of MMP-9,CRP and TG were analysed.Results The contents of MMP-9,CRP and TG were significantly higher in CI patients with high level TG group than those in normal level TG group and NC group(all P

Objective To observe the changes of the levels of serum soluble vascular adhesion protein(sVAP)-1 and C-reactive protein(CRP) in patients with cerebral infarction(CI).Methods The levels of serum sVAP-1 and CRP were detected in CI patients at acute stage (ACI group,20 cases) and at convalescence (CCI group,21 cases).The results were compared with normal controls(NC group,21 cases).Results The levels of serum sVAP-1,CRP in ACI group were significantly higher than those in CCI group and NC group(all P

Objective:To investigate the diagnostic and terapeutical value of FPG,GA,HbA1c and GA/HbA1c ratio in T1DM/T2DM.Methods:The study was made by case-control method.In our study,30 healthy subjects were selected from health physical ex-amination as control group while 160 diabetics were selected as case group,in which there are 76 TIDM and 84 T2DM.Analyzing the difference of relevance of FPG,GA and HbA1c,the difference of GA/HbA1c and threshold of the case and the control,and this analysis was also used between the T1DM and the T2DM.The data was managed by independent-sample t test,ROCK and Pearson correlation test of SPSS.Results:The results of FPG,GA ,HbA1c and GA/HbA1c ratio of T1DM and T2DM were significantly higher than those in the control group(P<0.01).And they were higher in the T1DM than in the T2DM(P<0.01);in the T1DM group,GA was strongly positive correlative with HbA1c(P<0.01),FPG was weakly positive correlative with GA(P>0.05),and weakly negative correlative with HbA1c(P>0.05);in T2DM group,there were positive correlation among FPG,GA and HbA1c(P<0.05),the degree of correlation ranked as HbA1c/GA>FPG/GA>FPG/HbA1c;analyzing the ROC of measures in T1DM group,the sensitivity and specificity were re-spectively 86.8% and 100% for diagnosing DM when FPG threshold was set on 5.86 mmol/L ( AUC=0.922 ) ( P<0.05 ).The sensitivity and specificity were both 100% for detecting DM when GA threshold was set on 15.5%( AUC=1 ) ( P<0.05 ).The sensitivity and specificity were respectively 98.7%and 100%for diagnosing DM when HbA1c threshold was set to 6.10%( AUC=1) ( P<0.05).The sensitivity and specificity were respectively 93.4% and 100% for diagnosing DM when the threshold of GA/HbA1c was set on 2.95 ( AUC=0.992 ) ( P<0.05 );analyzing the ROC of measures in T2DM group, the sensitivity and specificity were respectively 91.7% and 100% for diagnosing DM when FPG threshold was set on 5.94 mmol/L ( AUC=0.941 ) ( P<0.05 ).The sensitivity and specificity were respectively 85.7%and 100%for diagnosing DM when GA threshold was set on 15.5%( AUC=0.977) ( P<0.05).The sensitivity and specificity were respectively 97.6% and 100% for diagnosing DM when HbA1c threshold was set on 5.95%(AUC=0.991)(P<0.05).The ratio of GA/HbA1c had no diagnostic cutoff point,AUC was 0.644(P>0.05).Conclusion:FPG,GA, HbA1c and GA/HbA1c ratio are of high value in monitoring of blood glucose, diagnosis and typing in T1DM and T2DM.There are missed diagnosis when we diagnose T1DM and T2DM by the upper limit of reagent instruestion of FPG,GA,HbA1c.It is more important for a person with T1DM to monitor FPG than others.

Objective To explore how to elevate the efficiency of fetal heart screening.Methods Volume data of 83 normal fetuses ranging between 20 to 24 gestational weeks were acquired by spatiotemporal image correlation (STIC) with the apical four-chamber view(4CV).Tomographic ultrasound imaging (TUI) was then used to present the different views of fetal hearts,and were compared with those aquired by 2-dimensional (2D) ultrasound.Results All the 83 volume datasets were obtained by STIC.(1) Qualification ratio of short axis view of the aorta (SAV) by TUI was higher than that of 2D (94.0％ vs 84.3％,x2 =5.57,P=0.042).While,in the other 8 planes,the qualification ration by STIC were higher than that of 2D,however no significant difference was found (P＞0.05).(2) In 4CV,5-chamber view (5CV),left ventricular outflow tract view (LVOT),right ventricular outflow tract view (RVOT) and SAV,STIC showed excellent consistency with 2D (Kappa =0.79,0.90,0.92,0.93 and 0.77,respectively).And in long axis view of the aortic arch (LAV-AoA),long axis view of the duct (LAV-DA),superior and inferior vena cava (SVC+IVC) and short axis view of the ventricle (SVV),STIC showed good agreement with 2D (Kappa=0.72,0.67,0.74 and 0.70,respectively).(3) Image collecting time of T2D,TSTIC,TTUI and TSTIC+TUI were (5.80±1.58) min,(0.85±0.18) min,(2.57±1.32) min and (3.29±1.13) min,respectively.There were significant difference between TSTIC and T2D(t=3.500,P=0.000) and between TSTIC+TUI and TTUI (t=2.877,P=0.001).Conclusion The technique of STIC-TUI used in this study can display the standard planes of fetal heart conveniently,clearly and in shorter time.It is helpful for improving the quality and efficiency of fetal heart screening.

Objective To investigate clinical significance of counting follicles classification by three-dimensional imaging with sonography based automated volume calculation(SonoAVC)in the diagnosis of polycystic ovary syndrome(PCOS).Methods Eighty cases with PCOS were counted classified follicles and determined ovarian volume by three-dimensional(3D)imaging with SonoAVC method matched with 60 infertile women with fallopian tube or male factors as control.Main clinical.biological and other ultrasonographic markers were assessed during the early follicular phase,and the relationship between the follicle number range per ovary or the volume per ovary and the major hormonal features of PCOS was studied.Results Three-dimensional ultrasound imaging with SonoAVC methed provides a new path for objective quantitative assessment of follicle count.ovarian volume,total follicle numbers.The volume of (11 ±8)ml,total numbers of 27 ±14 follicle and number of22 ±19 follicle with diameter of≥2-＜6 mm in PCOS patients were significantly higher than(6 ±4)ml in ovarian volume.6 ±4 in total follicles and 2 ±3 in follicle with diameter of≥2-＜6 mm in controls(P＜0.05).while follicles were similar for the≥6-≤9mm range(P＞0.05).Total follicle numbers and follicles≥2-＜6 mm had significantly positive relationships with ovarian volume ( r= 0. 600, 0. 618, P＜0. 01 ) and level of testosterones ( r= 0. 364,0. 291, P＜0.05), follicles ≥2-＜6 mm also had significantly positive relationships with total follicle number (r=0. 916,P＜0. 01 ). The follicles within the ≥6 - ≤9 mm range was significantly and negatively related to ovarian volume and total follicle numbers ( r = - 0. 618, - 0. 263, all P = 0. 001 ), but no significantly related to the major hormonal features of PCOS. The ovarian volume was significantly positively related with luteinizing hormone ( LH)/follicle stimulating hormone (FSH) ratio ( r= 0. 282, P = 0. 010)but negatively related to FSH level (r = - 0. 226, P = 0. 042). Conclusions Ovarian volume, total follicle numbers and follicles ≥2 - ＜6 mm in PCOS patients were significantly higher than those in controls. The larger ovarian volume might produce more total follicle and follicles ≥ 2 - ＜6 mm. The higher level of testosterone might produce more total follicle probably, which mainly result in more follicles ≥2 -＜6 mm.These morphologically ultrasonographic characteristics could reflect pathophysiological changes in PCOS. Obviously, it has important clinical significance to count follicles in patients with PCOS by the threedimensional ultrasound imaging with SonoAVC method.

Objective To explore the relationship of human papilloma virus (HPV) genotype and loading dose with development of cervical intraepithelial neoplasia (CIN) or squamous cell carcinoma of the cervix ( SCC),and explore the relationship of HPV genotype and CIN or SCC.Methods One hundred and twenty four patients in Sun Yat-sen Memoral Hospital of Sun Yat-sen University with CIN or SCC from September 2005 to December 2010 were selected in this study.HPV DNA was detected by Hybrid capture Ⅱand flow-through hybridization and gene chip.The relationship between the infection of HPV and CIN or SCC was analyzed.The influencing factors of CIN or SCC were analyzed by logistic regression.Results The total detection rate of HPV was 75.8％,and it was 44.4％,70.0％,95.7％ and 76.2％ in CIN Ⅰ,CIN Ⅱ,CIN Ⅲ and SCC group,respectively.The detection rate of HPV in high-grade lesion group ( 84.5％ ) was higher than low-grade lesion group(44.4％ ).The median of HPV load decreased in order as CIN Ⅲ,SCC,CIN Ⅱ and CIN Ⅰgroup.Infection of multi-genotypes or single genotype of high-risk HPV accounted for 97.9％.In logistic regression,HPV loading dose had significant influence on degree of cervical lesion.Conclusions Infection of HPV is a main etiological factor for SCC.There is some kind of correlation between HPV loading dose and development of SCC.