Objective To clarify the clinical distribution and antimicrobial resistance characteris-tic of bacterial biofilm during catheter-associated urinary tract infection,and to simulate biofilm "real state" in vivo. Methods Totally 120 patients with catheter-associated urinary tract infections (UTIs) were enrolled in the study. The urine specimens were collected for screening biofilm strains and the corresponding planktonic strains. The biofilm was detected with semi-quantitative detecting method. Antibiotics susceptibility test were performed on the biofilm bacteria to clarify the difference of drug resistance in common MH medium the between biofilm strains and the corresponding planktonic strains,as well as the difference of drug resistance of positive strains of the biofilm between Poloxamer medium and common MH medium. Results Totally 48 strains (48/120,40%) of biofilm bacteria were detected. The antibiotic susceptibility test of planktonic and biofilm bacteria in Mueller-Hinton agar showed no significant difference (P>0.05), while the antibiotic resistance of biofilm bacteria in Muel-ler-Hinton agar and Poloxamer hydrogel was statistically different (P<0.05),and the former was stronger. Conclusion The biofilm bacteria during the urinary tract infection were mainly Staphylococci and Enterococci. The antimicrobial resistance of planktonic and biofilm bacteria have no significant difference in vitro, h is speculated that Poloxamer media may simulate the real living environment of biofilm bacteria and display their "true" drug resistance.

Objective To investigate the association of esp, gelE, ebpA and QS-fsr system and biofilm formation in Enterococcus faecalis. Methods Totally 24 isolates of Enterococcus faecalis were collected from urine and catheter of clinical urine tract infection patients in Third Xiangya Hospital from Oct. 2007 to Jun. 2008, and were divided into biofilm group and non-biofilm group. The luminance ratios of esp, gelE, ebpA and fsrrB of Enterococcus faecalis in biofilm group and non-biofilm group were detected by RT-PCR. And the expression of esp, gelE, ebpA, fsrrB genes in different groups were detected by real-time PCR and were relatively quantitated through 2-△△Ct method. Moreover, the relevancies between that fourgenes and biofilm formation in Enterococcus faecalis were analyzed respectively. Results The expression of esp and ebpA in biofilm group were 298 times and 59 times more than the non-biofilm group. The expression level ofgelE and fsrB in biofilm group were 1/244 and 1/249 times less than the non-biofilm group, and the luminance ratios of esp, gelE, ebpA and fsrB were not significant between the two groups (rank sum was 92,79, 42 and 34 respectively,all P ＞ 0. 05 ). Conclusions The results showed that the biofilm formation in Enterococcus faecalis was promoted by esp and ebpA, and was inhabited by gelE and fsrB, which suggested that the expression of esp, ebpA and gelE genes was regulated by fsr system.

OBJECTIVETo observe the long-term outcome of implantable cardioverter-defibrillator (ICD) implantation in Brugada syndrome patients and to explore how to reduce the frequency of ICD nappropriate schocks.

METHODSThis study included 14 symptomatic patients (mean age (44.3 ± 8.3) years old; all males) with Brugada syndrome implanted with ICD in our hospital between 1998 and 2012, and these patients were followed up routinely every 6 months. The initial ICD parameters were set according o conventional experience. The ventricular tachycardia (VT) zone was programmed to ventricular rate 150-188 bpm/cycle length (CL) 400-320 ms and the ventricular fibrillation (VF) zone was programmed to ventricular rate ≥ 188 bpm/CL ≤ 320 ms. The total events were recorded by ICD. The ICD parameters revision was made by electrophysiological (EP) experts in case of inappropriate shocks.

RESULTSPatients were followed up for mean (43.0 ± 28.3) months. A total of 297 VF/VT events were recorded by ICD. Electrophysiological experts found that 90% (178/198) episodes were true VF ( CL 130-250 ms) among of 198 VF episodes and 147 VF episodes were terminated by one shock and 21 VF events were terminated by two or more shocks, and the rest 10 VF terminated spontaneously. Only 9% (9/99) VT events were true VT (CL 320-360 ms) among of 99 VT episodes. Eight VT episodes were converted by antitachycardia pacing therapy (ATP) and the other one terminated spontaneously. The rest 90 VT episodes (91%) were supraventricular arrhythmias (SVT, CL 340-390 ms). About 90% inappropriate shocks can be reduced by Wavelet discrimination function and optimal programming (VF zone ventricular rate ≥ 222 bpm/CL ≤ 270 ms and/or VT zone ventricular rate 167-222 bpm/CL 270-360 ms ) according to the characteristics of arrhythmia of individual patient.

CONCLUSIONICD can effectively prevent sudden cardiac death and syncope in high-risk patients with Brugada syndrome. The most common complication is inappropriate shock due to SVT. Optimal ICD programming with Wavelet discrimination function can effectively reduce the frequency of inappropriate shock rate.

Adult ; Brugada Syndrome ; Cardiac Conduction System Disease ; Death, Sudden, Cardiac ; Defibrillators, Implantable ; Humans ; Male ; Syncope ; Tachycardia, Ventricular ; Treatment Outcome ; Ventricular Fibrillation

Objective To determine whether neuron?specific enolase(NSE)affects the prognosis of extensive small cell lung cancer by analyz?ing the association between NSE before treatment and disease progression and overall survival of patients. Methods This study retrospectively an?alyzed 83 inpatients in the medical oncology department of the First Affiliated Hospital of China Medical University from March 2008 to September 2014. The Kaplan?Meier method and Cox proportional hazards models were used to analyze relevant factors affecting the prognosis of extensive small cell lung cancer;statistical significance was determined for a P value less than 0.05. Results The lactate dehydrogenase(LDH)level be?fore treatment was significantly associated with the progression?free survival(PFS)(P=0.001)and overall survival(OS)(P=0.036). The NSE level before treatment was also significantly associated with the PFS(P=0.007)and OS(P=0.013). Conclusion LDH and NSE affect progno?sis and survival of patients with extensive small cell lung cancer.

Objective To explore the factors that affect the prognosis of extensive small cell lung cancer by analyzing the association between lab-oratory indicators before treatment of extensive small cell lung cancer patients and the initial evaluation results with disease progression and overall survival. Methods This study retrospectively analyzed 96 cases of hospitalized patients in the medical oncology department of The First Hospital of China Medical University from March 2008 to September 2014. Kaplan-Meier method and Cox proportional hazards models were adopted to ana-lyze the relevant factors affecting the prognosis of extensive small cell lung cancer. P<0.05 was considered statistically significant. Results There was no obvious correlation between HB level before treatment with PFS of patients(P=0.179),but there was obvious significant correlation be-tween HB level and OS of patients(P=0.041). Our results showed that the TBIL level of patients before chemotherapy was significantly associated with the PFS(P=0.039)and OS(P=0.026)of patients. Conclusion HB and TBIL levels are the influencing factors that affect the prognosis and survival of patients with extensive small cell lung cancer.

Objective To evaluate bone marrow mesenchymal stem cells combined with VEGF gene in the treatment of limb ischemia in rabbits.Methods The right hind limb ischemia model of New Zealand rabbit was established by superficial femoral artery excision and deep femoral artery ligation.Rabbits then were divided randomly into 4 groups: empty plasmid control group(EP group),bone marrow mesenchymal stem cells group(BMSC group),VEGF gene therapy group(VEGF group),combination bone mesenchymal stem cells and VEGF gene therapy group(BV group).There were 8 rabbits in each group.Angiogenesis was detected by arteriography on day 28 after treatment and expression of VEGF was detected by immunohistochemical staining on day 30 after treatment.Results There were no differences of collateral vessel count between the EP group,BMSC group and VEGF group.The collateral vessel count in BV group was higher than that of the other three groups.Immunohistochemistry of VEGF showed that the integrated optical density(IOD)in BMSC and VEGF groups increased significantly compared with the EP group; the IOD in BV group was the highest compared with the other three groups.Conclusions Combination bone marrow mesenchymal stem cells and VEGF gene in the treatment of limb ischemia in rabbits can obtain stable and effective expression of VEGF along with significant improvement of limb ischemia.

ObjectiveTo observe the clinical effect of Mahuang Xixin Fuzitang combined with acupuncture and moxibustion in the treatment of localized scleroderma. MethodA total of 95 patients with localized scleroderma treated in Wuhan No. 1 Hospital from September 2019 to October 2021 were assigned into a control group （47 patients） and an observation group （48 patients） by random number table method. The control group was treated with Centella triterpenes tablets and heparin sodium cream， and the observation group was additionally treated with Mahuang Xixin Fuzitang combined with acupuncture and moxibustion. Both groups were treated for 8 weeks， and the clinical effect was compared between groups. The traditional Chinese medicine（TCM） syndrome score （local skin sclerosis， loss of skin texture， darkening of skin pigment， scaly dry skin， etc.）， serum levels of soluble interleukin-2 receptor （sIL-2R） and tumor necrosis factor-alpha （TNF-α）， erythrocyte sedimentation rate （ESR）， and eosinophil count （EO） were compared between before and after treatment as well as between groups. Additionally， the adverse reactions were recorded. ResultThe observation group had higher total effective rate than the control group ［95.83% （46/48） vs. 82.98% （39/47）， χ²=4.166 4， P<0.05］. Before treatment， the TCM syndrome score， sIL-2R， TNF-α， ESR， and EO showed no significant differences between the two groups. The 8 weeks of treatment improved the TCM syndrome score， sIL-2R， TNF-α， ESR， and EO. Moreover， the observation group was superior to the control group in these indicators （P<0.05）. During the treatment， the observation group showed 1 case of abnormal liver function and 1 case of nausea and vomiting， and the control group had 1 case of nausea and vomiting， 1 case of abnormal renal function， and 1 case of abnormal liver function. The total adverse reactions of the observation group （4.17%） and the control group （6.38%） had no significant difference （χ²=0.233 9， P=0.062 86）. ConclusionMahuang Xixin Fuzitang combined with acupuncture and moxibustion is safe and effective in the treatment of localized scleroderma.

Objective To investigate the clinical effect of posterior screw-rod fixation fusion for the treatment of atlantoaxial dislocation due to rheumatoid arthritis.Methods From January 2011 to December 2015,15 patients with atlantoaxial dislocation due to rheumatoid arthritis were treated,including 6 males and 9 females,aged 35 to 75 years (mean 55 years).All cases were evaluated about the difficulty of relocation by extension-flexion X-ray and treated with posterior screw-rod reduction,fixation and autogenous bone grafting under general anesthesia.Atlantodental interval (ADI) was measured and collected before and after surgery.Visual Analogue Scale/Score (VAS),American Spinal Cord Injury Association (ASIA) and Japanese Orthopaedic Association (JOA) scores were comprehensively used to evaluate the clinical effect.1 week,3,6,12 months postoperatively and the annual review of the X-ray and CT were checked,in order to evaluate the reduction,internal fixation and bone graft fusion.Results All patients were reducible dislocation and successfully performed the posterior screw-rod fixation fusion surgery.The patients were followed up for 3 to 24 months (average,15 months).Atlantoaxial solid bony fusion was obtained from 3 to 6 months.ADI reduced from preoperative 6.3±1.7 mm to postoperative 2.2±0.8 mm,VAS score reduced from preoperative 5.4±2.7 to postoperative 1.7±1.0,ASIA motor score improved from preoperative 82.3±15.6 to 95.3±4.5 at 6 months after the surgery,JOA score increased from preoperative 13.8±2.9 to 15.5±1.4 at 6 months after the surgery,and the statistical significance was revealed between preoperation and postoperation.Nine cases were in D grade of ASIA,3 cases improved from D to E grade after surgery,2 cases reached E grade in the other 6 cases after 6 months,2 cases recovered to E grade after 12 months and other 2 cases in D grade got uniformity after surgery.Well internal fixation and no redislocation were found on X-ray and CT during follow-up period.Conclusion Atlantoaxial dislocation because of rheumatoid arthritis was numerously reducible genre.Posterior screw-rod fixation and autogenous bone grafting can gain satisfying clinical efficacy.

【Objective】 To investigate the gene frequency and polymorphism of RBC blood group systems in RhD negtive population in Hunan, so as to lay a foundation for clinical blood transfusion and construction of multiple rare blood group database. 【Methods】 Blood samples were taken from 300 RhD negative blood donors, confirmed by serological method, from June 2019 to June 2020,. RHD genotyping was performed by SSP-PCR. For blood donors with typing results as RhD negative plus RHD gene deletion, antigens genotyping of MNS, Duffy, Kell, Domrock, Diego, Kidd, Sciawnna, Colton, Lutheran and Yt RBC blood group systems were performed by SSP-PCR and analyzed by the chi square test of SPSS 20 statistical software. 【Results】 RHD gene deletions accounted for 58.67% (176 / 300) of serological D negative blood donors. The gene frequencies were as follows: MNS: GYPB^*S=0.045 5(8/176), GYPB^*s=0.954 5(168/176), GYP^*Dane=0.039 8(7/176); Duffy: FY^*A =0.965 6(170/176), FY^*B=0.034 1(6/176); Dombrock: DO^*A=0.082 4(14.5/176), DO^*B=0.917 6(161.5/176); Diego: DI^*A=0.025 6(4.5/176), DI^*B =0.974 4(171.5/176); Kidd: JK^*A=0.485 8(85.5/176), JK^*B=0.514 2(90.5/176); Kell: KP^*A=0.005 7(1/176), KP^*B=0.994 3(175/176); Lutheran: LU^*A=0.005 7(1/176), LU^*B=0.994 3(175/176); Yt: YT^*A=0.002 8(0.5/176), YT^*B=0.997 2(175.5/176). The genotypes of Kell(K+ /k+ ), Scianna and Colton blood groups were KEL^*02 /KEL^*02, SC^*01 /SC^*01 and CO^*A /CO^*B, respectively. The expected frequencies of the combination of type O, RhD negative and other blood group systems were between 1/100 000 to 1/10 000. 【Conclusion】 Among RhD negative blood donors in Hunan, the gene profiles of MNS, Duffy, Domrock, Diego, Kidd, Kell and Lutheran blood group system were polymorphic, and Kell (K+ /k+ ), Colton and Scianna were homozygous. The data of other RBC blood group systems from RhD negative blood donors is of great significance to establish local database of rare blood groups.

Objective:To subdivide clinical classification of refractory atlantoaxial dislocation, and evaluate the reliability of new subdivide clinical classification of refractory atlantoaxial dislocation.Methods:From January 2010 to December 2018, 48 patients with refractory atlantoaxial dislocation were treated, including 19 males and 29 females, aged 16 to 65 years, with an average of 39.2±13.3 years. According to the changes of relative anatomical position of C 1 and C 2 under general anesthesia with heavy traction of 1/6 body weight, subdivide clinical classification of refractory atlantoaxial dislocation were proposed, and refractory atlantoaxial dislocation was divided into traction loosening type (atlantoaxial angle≥5°) and traction stabilization type (atlantoaxial angle<5°). The traction loosening type was directly reduced by posterior atlantoaxial screw-rod fixation and fusion without anterior or posterior soft tissue release. For traction stabilization type, transoral soft tissue release was performed first, and then transoral anterior reduction plate fixation and fusion or posterior atlantoaxial screw-rod fixation and fusion were performed. Atlantodental interval (ADI) and atlantoaxial angle (AAA) were measured and collected before and after surgery to evaluate atlantoaxial reduction. The space available for the spinal cord (SAC) were measured to evaluate spinal cord compression. Visual analogue score (VAS) was used to evaluate the neck pain levels, and Japanese Orthopaedic Association (JOA) scores was used to evaluate the neurological function. American Spinal Cord Injury Association impairment scale (AIS) was used to evaluate the degree of spinal cord injury. One week, 3, 6, 12 months postoperatively and the annual review of the X-ray and CT scan were checked, in order to evaluate the reduction, internal fixation and bone graft fusion. Results:Among all 48 cases, 22 cases were traction loosening type, of which posterior atlantoaxial screw-rod fixation and fusion were performed in 16 cases and occipitocervical fixation and fusion in 6 cases. 26 cases were traction stabilization type, and they all underwent anterior transoral release, and then, anterior TARP fixation and fusion were performed in 24 cases and posterior screw-rod fixation and fusion in the other 2 cases. X-ray, CT and MRI images and of all patients 1 week after surgery showed good atlantoaxial reduction and decompression of spinal cord. In each of the two types, there was one case lost to follow-up. For 46 cases in follow-up, the follow-up time ranged from 6 to 72 months, with an average of 38.0±17.2 months. Among 46 cases, 21 cases of traction loosening type showed that, ADI reduced from preoperative 9.9±2.2 mm to 2.3±0.9 mm at 3 months after surgery and 2.3±1.0 mm at the last follow-up, AAA increased from preoperative 57.9°±12.3° to 91.0°±2.2° at 3 months after surgery and 90.9°±2.2° at the last follow-up, SAC increased from preoperative 9.8±1.3 mm to 15.1±0.7 mm at 3 months after surgery and 14.9±0.7 mm at the last follow-up, VAS score reduced from preoperative 1.5±2.1 to 0.7±1.0 at 3 months after surgery and 0.3±0.6 at the last follow-up, and JOA score increased from preoperative 10.2±1.7 to 13.3±1.3 at 3 months after surgery and 14.9±1.5 at the last follow-up. Twenty-five cases of traction stabilization type presented that, ADI reduced from preoperative 9.7±2.0 mm to 2.1±1.4 mm at 3 months after surgery and 2.1±1.3 mm at the last follow-up, AAA increased from preoperative 55.8°±9.2° to 90.9°±1.4° at 3 months after surgery and 90.9°±1.3° at the last follow-up, SAC increased from preoperative 10.5±1.0 mm to 15.4±0.5 mm at 3 months after surgery and 14.8±2.8 mm at the last follow-up, VAS score reduced from preoperative 1.7±2.1 to 0.7±0.9 at 3 months after surgery and 0.3±0.5 at the last follow-up, and JOA score increased from preoperative 10.1±1.3 to 12.9±1.5 at 3 months after surgery and 14.4±1.3 at the last follow-up. In the traction loosening type, all the 10 grade D patients were improved to grade E at the last follow-up. In the 2 grade C patients of traction stabilization type before surgery, 1 patient was improved to grade E, 1 patient was improved to grade D, and all 11 patients with grade D were improved to grade E at the last follow-up. Bony fusion was obtained in all patients from 3 to 6 months, with an average of 4.4±1.5 months. During follow-up period, no looseness of internal fixation or redislocation happened.Conclusion:Refractory atlantoaxial dislocation can be divided into traction loosening type and traction stabilization type. For traction loosening type, satisfactory reduction can be achieved by using posterior atlantoaxial screw-rod system without soft tissue release. For traction stabilization type, anterior release is preferable, and then anterior TARP or posterior screw-rod can be used to achieve satisfactory reduction.