Objective To determine the prevalence,trends and risk factors of drug-resistant tuberculosis (TB) in Ningbo during 2007-2010,and to explore the efficient control strategy of drugresistant TB.Methods A cross-sectional study of regional anti-TB drug resistance was conducted in Ningbo.The registered and culture-positive TB patients were enrolled and drug sensitivity test was performed.The demographic and clinical information were collected from the national TB report system.Logistic regression model was used to determine the risk factors of drug resistance.Results Of 1613 enrolled TB patients,39.3％-48.3％ were resistant to any first-line anti-TB drug and 14.0％-19.9％ were multidrug resistant (MDR)-TB.The proportion of new cases resistant to any first-line anti-TB drug was 35.4 ％-42.1％ and MDR TB was 9.8％- 12.2 ％,which were both significantly lower than those of retreated patients (69.5％-72.7％ and 33.9％ - 54.5％,respectively).The multivariate Logistic regression model showed that anti-TB treatment history and migration were significantly associated with any drug resistance (OR=3.298,95 ％ CI 2.391 4.550and OR=0.771,95 ％CI 0.608 - 0.978,respectively) ; while age,treatment history and migration were also significantly associated with MDR-TB.Conclusions Drug-resistant TB prevalence showed a decrease trend in Ningbo,while the resistant rates in both new cases and retreated cases still remain at high levels. Improved case management,including directly observed treatment short-course and appropriate treatment regimens specifically for drug-resistant TB,should be developed to prevent further transmission and development of drug-resistant TB in this setting.

OBJECTIVETo construct E1-deletion and replication-defective human type 5 recombinant adenovirus vector and to study the effect of p16INK4a on proliferation and aging of A549 cells.

METHODSp16INK4a cDNA was cloned into pAdCMV to construct recombinant pAdCMV p16INK4a, which was co-transfected into 293 cell together with pJM17. The recombinant p16INK4a adenovirus (Ad-p16INK4a) was generated by homologous recombination and identified with duplex PCR. Lung cancer cell A549, which has a homozygous deletion of p16INK4a gene, was infected with the prepared Ad-p16INK4a virus. X-gal staining and TRAP-ELISA were used for detecting senescence-associated beta-galactosidase and telomerase activities in A549 cells.

RESULTSImmunohistochemical staining and Western blot indicated that p16INK4a gene was transferred into A549 cell with more than 95% efficiency by recombinant adenovirus and p16INK4a protein was expressed at a high level- p16INK4a could markedly inhibit growth of A549 cells, induced expression of senescence-associated beta-galactosidase and suppressed telomerase activity in A549 cells.

CONCLUSIONRecombinant adenovirus vector could efficiently mediate transfer and expression of foreign genes in human cell and could be used for gene immunization and gene therapy; p16INK4a could inhibit A549 cell growth and induce its replicative senescence.

Adenoviridae ; genetics ; Cell Line, Tumor ; Cell Proliferation ; Cellular Senescence ; Cyclin-Dependent Kinase Inhibitor p16 ; biosynthesis ; genetics ; physiology ; Gene Expression ; Genetic Vectors ; Humans ; Recombination, Genetic ; Transfection

OBJECTIVEImpulse oscillometry (IOS) is a novel technique for the evaluation of pulmonary function. Soluble intercellular adhesion molecule-1 (sICAM-1) and soluble vascular cell adhesion molecule-1 (sVCAM-1) are definitive indicators for the severity of asthma. This study aimed to explore the relationship of IOS pulmonary function with sICAM-1 and sVCAM-1, and their values in childhood asthma.

METHODSIOS via Master Screen System for pulmonary function was performed in 40 children with acute asthma and 25 healthy children. Twenty-three of 40 children with acute asthma were re-tested for IOS pulmonary function at remission. sICAM-1 and sVCAM-1 levels were measured in 23 children with acute asthma, 20 asthmatic children at remission and 16 healthy children.

RESULTSThe parameters of IOS pulmonary function, R5, R20, R5-R20, X5, Fres and Zrs in children with acute asthma were significantly higher than in asthmatic children at remission and in normal controls (q= 2.91-15.61, P < 0.01 or 0.05). There were significant differences in R5, R5-R20, Fres and Zrs between the asthmatic children at remission and normal controls (q= 3.08- 9.19, P < 0.01 or 0.05). sICAM-1 and sVCAM-1 levels in children with acute asthma were significantly higher than in asthmatic children at remission and in normal controls (q= 6.23-26.15, P < 0.01). The asthmatic children at remission had higher levels of sICAM-1 and sVCAM-1 than the normal controls (q=16.86, 12.46, P < 0.01). R5-R20 positively correlated with sICAM-1 and sVCAM-1 in children with acute asthma (r=0.45, 0.57, P <0.05).

CONCLUSIONSIOS for pulmonary function and sICAM-1 and sVCAM-1 may be used to evaluate the severity and therapeutic effects of childhood asthma. A correlation exists between IOS pulmonary function and sICAM-1 and sVCAM-1.

Asthma ; physiopathology ; Child ; Child, Preschool ; Female ; Humans ; Intercellular Adhesion Molecule-1 ; blood ; Lung ; physiopathology ; Male ; Oscillometry ; methods ; Respiratory Function Tests ; methods ; Vascular Cell Adhesion Molecule-1 ; blood

The purpose of the present work is to establish an ultra-minimal invasive percutaneous puncture inoculation method for a VX2 orthotopic lung cancer rabbit model with fewer technical difficulties, lower mortality of rabbits, a higher success rate and a shorter operation time, to evaluate the growth, metastasis and apoptosis of tumor by CT scans, necropsy, histological examination, flow cytometry and immunohistochemistry. The average inoculation time was 10–15 min per rabbit. The tumor-bearing rate was 100%. More than 90% of the tumor-bearing rabbits showed local solitary tumor with 2–10 mm diameters after two weeks post-inoculation, and the rate of chest seeding was only 8.3% (2/24). The tumors diameters increased to 4–16 mm, and irregularly short thorns were observed 3 weeks after inoculation. Five weeks post-inoculation, the liquefaction necrosis and a cavity developed, and the size of tumor grew further. Before natural death, the CT images showed that the tumors spread to the chest. The flow cytometry and immunohistochemistry indicated that there was less apoptosis in VX2 orthotopic lung cancer rabbit model compared to chemotherapy drug treatment group. Minimal invasive percutaneous puncture inoculation is an easy, fast and accurate method to establish the VX2 orthotopic lung cancer rabbit model, an ideal in situ tumor model similar to human malignant tumor growth.
Apoptosis ; Drug Therapy ; Flow Cytometry ; Humans ; Immunohistochemistry ; Lung Neoplasms* ; Lung* ; Methods* ; Mortality ; Necrosis ; Neoplasm Metastasis ; Punctures* ; Rabbits ; Thorax ; Tomography, X-Ray Computed

OBJECTIVETo evaluate the effect and safety of transurethral prostatectomy with the bipolar plasmakinetic technique (PKRP) in the treatment of benign prostate hyperplasia (BPH).

METHODSA total of 712 BPH patients underwent transurethral prostatectomy with the bipolar plasmakinetic technique. The patients averaged 70.6 years of age and 52 g (range 35-102 g) in estimated prostate weight preoperatively. Comparative analyses were made on the maximum urine flow rate (Qmax), residual urine volume and scores on IPSS and QOL obtained pre- and post-operatively.

RESULTSThe operations lasted 20-120 minutes (mean 51 min), the resected tissues weighed 15-96 g (mean 46 g), and no transurethral resection syndrome (TURS) occurred. The catheters were removed 4 -5 days after surgery. The patients were followed up for 1 -52 months (mean 27.6 mo). Obvious reduction was observed in the average Qmax from 4.7 ml/s preoperatively to 19. 1 ml/s postoperatively, in the mean IPSS score from 26.6 to 5. 8, and in the mean QOL score from 5.4 to 1.7, all with significant differences (P < 0.01).

CONCLUSIONTransurethral prostatectomy with the bipolar plasmakinetic technique is a safe and effective means for the treatment of BPH.

Aged ; Aged, 80 and over ; Humans ; Male ; Middle Aged ; Prostatic Hyperplasia ; surgery ; Transurethral Resection of Prostate ; methods ; Treatment Outcome

OBJECTIVETo evaluate the effect and safety of transurethral prostatectomy with the bipolar plasma kinetic technique (PKRP) in the treatment of benign prostate hyperplasia(BPH).

METHODSTwo hundred and ninty-seven BPH patients underwent transurethral prostatectomy with the bipolar plasma kinetic technique. The preoperative estimated weight of the prostate ranged from 35 g to 102 g, averaging 52 g.

RESULTSThe operation lasted 40 approximately 65 min, averaging 51 min. The resected tissues weighed 40 approximately 80 g, averaging 46 g. During the operation no transurethral resection (TUR) syndrome occurred. The catheter was removed 4 approximately 5 days after the operation, all with fluent urination. The patients were followed up for 2 approximately 33 months. IPSS decreased from average 31.5 preoperatively to average 6.8 postoperatively (P < 0.001). Average maximum flow-rate (Q(max)) decreased from 6.3 ml/s preoperatively to 18.6 ml/ s postoperatively (P < 0.001). Preoperative average residual urine was 97 ml and reduced to average 9 ml after the operation. Temporary incontinence occurred in 4 cases, perioperative hemorrhage in 2, and urethral stricture in 1.

CONCLUSIONTransurethral prostatectomy with the bipolar plasma kinetic technique is a safe and effective means for the treatment of BPH.

Aged ; Aged, 80 and over ; Humans ; Male ; Middle Aged ; Prostatic Hyperplasia ; surgery ; Transurethral Resection of Prostate ; methods ; Treatment Outcome

OBJECTIVETo observe the effect of the combined therapy of intervention, operation and biology in patients with middle-advanced renal cell carcinoma.

METHODSCombined therapy was used in 52 cases as combined care groups and the single operational therapy was used in 50 cases as control group. Compare their resection rates, surgical risks and 3, 5 years survival rates.

RESULTSIn the combined care group, the excision rate was 100%, the average amount of blood transfusion during the operation was 280 ml, the average operation time was 100 minutes, and the 3, 5 years survival rates were 73% and 50%; While in the control group, the results were 90%, 396 ml, 130 minutes, 55% and 27% respectively. There were significant differences between 2 groups (P < 0.05).

CONCLUSIONCombined therapy could elevate resection rates and 3, 5 years survival rates and decrease surgical risks.

Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Cancer Vaccines ; therapeutic use ; Carcinoma, Renal Cell ; pathology ; therapy ; Combined Modality Therapy ; Embolization, Therapeutic ; Female ; Follow-Up Studies ; Humans ; Kidney Neoplasms ; pathology ; therapy ; Male ; Middle Aged ; Neoplasm Staging ; Survival Rate

OBJECTIVETo develop a new sampling medium for detecting of bioaerosols.

METHODSThe sampling media were tested by using Escherichia coli, Staphylococcus aureus and Serratia marcescens under static and active conditions, preliminary applications were performed using AGI-10 and high volume sampler.

RESULTSThe average recovery rates were raised to 24.7%, 58.2%, 40.5%, 44.1%, 20.5%, and 15.4%, respectively in six consecutive experiments under static condition for 60 min at room temperature. Four kinds of sampling media were singled out after static experiments, which were referred to as "samplutions" PD1, PX2, TD1, and TX2, respectively. Under the active condition, the protective efficacy of PD1, PX2, TD1, and TX2 was 226% (153/47), 553% (111/17), 150% (120/48), and 268% (419/114), respectively.

CONCLUSIONThe samplutions have some effects on the subsequent nucleic acid detection, which could be avoided by employing standard nucleic acid extraction procedure. The newly developed samplution can be applied to the detection of bioaerosols.

Aerosols ; analysis ; Air Microbiology ; Air Pollutants ; analysis ; Environmental Monitoring ; methods ; Escherichia coli ; isolation & purification ; Nucleic Acids ; isolation & purification ; Sampling Studies ; Serratia marcescens ; isolation & purification ; Staphylococcus aureus ; isolation & purification

Adolescent ; Adult ; Aged ; Female ; Humans ; Male ; Meningioma ; diagnosis ; Middle Aged ; Retrospective Studies ; Young Adult

BACKGROUNDMeningioma is one of the most common primary tumors of the central nervous system, but there are not many detailed studies on the sex, age, subtypes and locations of large series. This study was a retrospective analysis of the characteristics of meningioma cases consecutively operated on at a single institution in China from 2001 to 2010.

METHODSThis study investigated the demographic background of 7084 meningioma cases, and the subtypes and locations of the tumors. Sex and age distributions were analyzed, and the pathological subtypes were classified according to the World Health Organization (WHO) classification. The location of the meningiomas was also categorized.

RESULTSThe female:male ratio of the 7084 cases was 2.34:1. The mean age was 51.4 years (range, 11 months-86 years). The mean age of cases of WHO grade I meningioma was significantly older than that of grade II or III meningiomas (P < 0.001, Fisher's Least Significant Digit test). There was a significantly higher female:male ratio in WHO grade I meningiomas than in grade II or grade III meningiomas (2.57, 1.03 and 0.76, respectively; P < 0.001, χ(2) test). Meningothelial (n = 2061) and fibrous meningiomas (n = 3556) were the most common subtypes, comprising 79.3% of all meningiomas. All meningioma cases were classified into 23 locations in this study, with the cerebral convexity the most common site (38.33%, n = 2722). Cases with uncommon locations such as extra-cranial and sylvian fissure meningiomas were also present in this series.

CONCLUSIONSFemale predominance was found for benign meningiomas, while malignant subtypes showed male predominance. The mean age of patients with WHO grade I meningiomas was older than that of patients with higher-grade tumors. Meningothelial and fibrous meningiomas were the most common subtypes. The cerebral convexity was the most common meningioma location.

Adolescent ; Adult ; Age Distribution ; Aged ; Aged, 80 and over ; Child ; Child, Preschool ; China ; epidemiology ; Female ; Humans ; Infant ; Male ; Meningioma ; epidemiology ; Middle Aged ; Sex Distribution ; Young Adult