Objective To explore the significance of established Tp0259-PCR in diagnosing primary syphilis.To provide basis for establishing new PCR diagnosis method of Treponema pallidum.Methods Specific primers were designed by the gene sequences of Tp0259 which was obtained from Genbank.Tp0259-PCR was established under the optimization reaction condition.Using the new construction of amplification method to detect the common pathogenic microorganism in urinary and reproductive tract infec-tion.42 clinical secretion specimens suspected primary syphilis were tested by Tp0259-PCR.Serum specimens from the same pa-tients were tested by TPPA.Results Only specific amplicons could be found in amplifying the Treponema pallidum by Tp0259-PCR.The detection rate was 73.8% using Tp0259-PCR which was apparently higher than 57.1% using TPPA(P <0.05 ).The specificity of the established method was 100% comparing with TPPA.Conclusion The established method of Tp0259-PCR has high sensibility and specificity.This method might be better than serological method in diagnosis of primary syphilis.but its clinical diagnosis value need to be repeatedly verified by more clinical specimens.

Objective To establish a method for detection Tp0259 gene by PCR .To provide basis of diagnosis infection of trepo‐nema pallidum by detection Tp0259 gene .Methods Gene sequences of Tp0259 was obtained from Genebank and analysis by bioin‐formatics .Specific primers were designed .The whole genome was extracted from testis specimens of the New Zealand rabbits infec‐ted by treponema pallidum and control groups .The gene of Tp0259 was amplified by PCR under the optimization reaction condi‐tions which was selected by many tests ,using the new construction of amplification method to detect the common pathogenic micro‐organism in urinary and reproductive tract infection .Results Specific bands of 646 bp was appeared only in New Zealand rabbits which was infected by treponema pallidum ,while none was in the control group and other pathogenic microorganisms .Conclusion Detection the Tp0259 gene could be used to diagnose infection of treponema pallidum .

Objective To investigate whether there is a correlation between the esophageal length of the adult Chinese people and their height, sitting height, sex or age. Methods The length from the upper end of esophagus to the dentate line of the cardia was measured by watching esophageal cavity with endoscope. A total of 613 cases (378 males and 235 females) were studied. Results ① The average length of esophagus was (24.8?2.1)cm for male and (22.8?1.9)cm for female. The difference between male and female was statistically significant (P

OBJECTIVE To acquire the information about the gene type and epidemic condition of the hospital to provide scientific proof for monitoring and controlling nosocomial infection.METHODS Meticillin-resistant Staphylococcus aureus(MRSA) was identified by its resistance to cefoxitin of disk diffusion and mecA PCR,randomly amplified polymorphic DNA(RAPD) was carried out with the optimization condition.RESULTS The rate of MRSA infection was 72.15% and the main gene type was A in the hospital.CONCLUSIONS The nosocomial infection may exist in the hospital and the hospital must take effective measure to decline nosocomial infection of the MRSA;RAPD is suitable for molecular epidemiology with high powerful discrimination,simplicity and rapidness.

Objective To research the effect of regulating systemic inflammatory response by using ulinastatin in elderly patients after sevoflurane inhalation of postoperation cognitive function. Methods 60 patients under went elective abdominal surgery, were randomly double-blinded divided into 2 groups. Every group had 30 patients.Group A accepted continuously intravenousiy infusion ulinastatin 2000 units · kg-1 · h-1 , while group B got equivalent continuously intravenous infusion 0.9% sodium chloride injection. The time point of opening eye, extubation, response and the mini-mental state examination(MMSE) score on different time points were observed. Meanwhile, the changes of concentration of hs-CRP, IL-6,IL-10 were measured. Results Compared with two groups,group A has shorter time on response(F =4.399,P = 0.040). Two both groups had decrease of MMSE score 1 hour after surgery compared with preoperation(t =7. 732,11. 916, both P ＜ 0.01), and the score were less than the preoperative value of more than 2 points which showed cognitive decline in patients. But group A's rate of decline in MMSE score was lower than group B(F = 7. 582 ,P =0.012). Both groups had the MMSE score decline 6h after surgery (t = 4. 606,8. 615, both P ＜ 0.05). Group A's score was less than the preoperative value for less than 2 points, group B's score was lower than the preoperative value for more than 2 points, but the difference between the two groups was not significant (P ＞0. 05). Both groups had higher concentrations of hs-CRP、IL-6 、IL-10 at postoperative 1 d ,3d ,7d (all P ＜ 0.01), peaked at postoperative 1 d, and hadn't come back to the preoperative level 7d*after surgery. In group A, the concentrations of hs-CRP, IL-6 increased (postoperative 1 d,3d), but the rate was lower than the group B (F = 14. 885, P = 0.000;F = 4. 405, P = 0. 040; F = 18. 204, P = 0.000; F = 8. 074, P = 0. 006); while the increased rate of concentration of IL-10 was higher than the group B(F=5.197,P=0.026;F= 12.236,P =0.000). Conclusion Ulinastatin could promote the elderly after sevoflurane inhalation rapid recovery of cognitive function, which may be related to the regulation of systemic inflammatory response.

Objective To investigate the clinical characteristics,treatment effect,long-term follow up results,guanosine triphosphate (GTP) cyrclohydrolase Ⅰ (GCH Ⅰ)gene and tyrosine hydroxylase(TH) gene mutations in patients with dopa-responsive dystonia (DRD).Methods The clinical features of 3 families with 4 affected members were analyzed and all of 4 patients were screened for mutations of the GCH Ⅰ gene and TH gene with DNA sequences.Results Four patients were females,average age at onset was (15.3 ± 5.6) years (range:from 9 to 20 years).The initial symptoms were a gait disorder,stiffness or tremor of the lower limbs in all patients presented with diurnal fluctuation.As the increase of disease duration,bilateral hand tremor was found in three patients,systemic torsion was found in one patient and torticollis was found in one patient.All patients' symptoms were in complete remission after administration of low dose of levodopa.Four patients were followed up for 0.5 to 10.0 years,and all were still responsive to the levodopa treatment and effective dosage was decreased as the increase of the disease duration.No longterm side effects of levodopa had occurred after long-term treatment.One patient was found to have c.607G ＞A(p,Gly203Arg) heterogenetic mutation in GCH I gene.Molecular analysis revealed a compound heterozygous mutation in the TH gene (p.Y447Ter and p.V468M) in one patient.No point mutations in both genes were found in other patients.Conclusions DRD patients have dramatic and sustained response to levodopa and no long-term side effects of levodopa after long-term treatment.The detection of GCH Ⅰ and TH gene mutations is helpful in early diagnosis but the negative results could not exclude the diagnosis of DRD.

Objective:To investigate the induction and differentiation potential of ADSCs by tissue culture method,and to preliminary study on the origin of ADSCs.Methods:Using adipose tissue culture method to culture human ADSCs.The third generation of ADSCs for the adipogenic and osteogenesis differentiation,and staining by oil red O and alizarin red S.HE staining was performed after the seventh day culture of adipose tissue.Results:The primary human ADSCs were successfully cultured with adipose tissue culture method.ADSCs cultured to the eighth generation,still maintained a good proliferation ability and cell morphology.ADSCs can be successfully induced into adipose cells and bone cells.ADSCs were mainly distributed around the mesenchymal vascular and connective tissue,by HE staining of adipose tissue after seven days of culture.Conclusion:The cells that were cultured with adipose tissue have the potential to adipogenic and osteogenesis differentiation.The ADSCs were mainly distributed around the mesenchymal vascular and connective tissue.

To investigate the effectiveness of retrograde puncture of popliteal artery in lower extremity arteriosclerosis obliterans ( ASO ) patients classified as TASC ( Tans-Atlantic Inter-Society Consensus) C/D.Retrospective analysis of 35 lower extremity ASO patients, 28 male and 7 female , the mean age was 72 ±8, 23 cases of Rutherford 3, 8 cases of Rutherford 4 and 4 cases of Rutherford 5. Preoperative ABI was 0.35 ±0.14, Lesion length in CT angiography ( CTA ) was ( 18 ±5 ) cm.The technique success rate of 35 cases was 100%.The puncture time was (6 ±4) min.6 cases used 4 F sheath and 29 cases used no sheath technology at the puncture site.In 27 cases guide wires passed retrograde through the occluded superficial femoral artery lesion and returned to the true lumen.8 cases of SAFARI technology to established the guild wire track.The complication rate of retrograde puncture was 14.2%( 5/35), 2 cases of postoperative hematoma appeared at the puncture site the next day, 2 cases of pseudoaneurysms emerged and 1 case of postoperative arteriovenous fistula at the puncture site of popliteal area were found by Doppler ultrasonography before discharged.All 5 patients were recovered by conservative treatment.The retrograde puncture of popliteal artery is a safe and reliable method.

Objective:To investigate the effectiveness of postoperative radiotherapy using shrinking field for patients with extremity soft tissue sarcoma (STS), mainly focusing on the local control rate and adverse events.Methods:Clinical data of 49 extremity STS patients who received postoperative intensity-modulated radiotherapy in the First Hospital of Tsinghua University from October 2017 to March 2021 were retrospectively analyzed. Target volumes were contoured on CT and MRI fusion images. The tumor bed was defined as GTV tb, with 3 cm expansion in the longitudinal direction and 1.5 cm expansion in the radial direction to construct CTV (the target volume should be properly repaired according to the anatomical barrier, and the edema area around the tumor should be included). GTV tb and CTV were expanded in all directions by 0.5 cm to construct PTV1 and PTV2 respectively, at a dose of 95%PTV1 63-66 Gy, 95%PTV2 50-56 Gy,1.8-2.0 Gy/f. The dose of surgical volume should be given at 70 Gy for patients who had a microscopic positive margin. Results:The median follow-up time was 32.1 months (7.9-45.6 months). The 3-year local failure-free survival (LFFS), overall survival (OS)and distant metastasis-free survival (DMFS) were 91.7%,77.6% and 71.5%, respectively. Univariate analysis showed that patients with a microscopic positive margin were more likely to develop local recurrence ( P<0.05). The incidence of grade 2 or above wound complications, joint stiffness, fracture, edema and skin fibrosis were 2%, 4.1%, 2%, 8.2% and 26.5%, respectively. Conclusion:Postoperative radiotherapy with shrinking field provides excellent local control rate and low incidence of late adverse events in patients with extremity STS.

Objective To explore the effect of cisterna magna plastic repairing (posterior vertebral column resection and cerebella tonsillectomy and reconstruction of the cisterna magna by artificial dura) on cerebrospinal fluid dynamics in Chiari malformation type Ⅰ with syringomyelia and evaluate the efficacy of this surgical method.Methods Forty patients with Chiari malformation type Ⅰ with syringomyelia (CMI-SM),admitted to and diagnosed by MRIin our hospital from January 2011 to December 2013,were selected.All patients were treated with cistema magna plastic repairing.Phase-contrast MR imaging (PC-MRI) was performed,changes of cerebrospinal fluid dynamics indicators of cerebral aqueduct,pons ventral side and C3 ventral side were detected and compared and Japanese Orthopaedic Association (JOA) scale scores were evaluated 24 h before operation and 12 months after operation.Results No neurological deterioration or death was noted;JOA scores in all patients were increased from 7.89±3.52 to 12.53±4.32,with significant difference (P＜0.05);post-operated PC-MRI indicated that the cistema magna formed well,spinal subarachnoid space was clear,syringomyelia in 30 patients was significantly reduced;as compared with those before operation,the stroke volume and mean flux were significantly increased,but maximum peak velocity was significantly reduced (P＜0.05).Conclusion Cisterna magna plastic repairing can reduce syringomyelia,increase cerebrospinal fluid flow,and reduce peak flow of cerebrospinal fluid,which is an effective surgical procedure for Chiari malformation type I with syringomyelia.