Objective To investigate the efficacy of video-assisted thoracic small incision in diagnosis and treatment of small pulmonary nodules.Methods From February 2007 to February 2008,53 patients(aged over 40 years) with small solitary pulmonary nodule(≤3 cm in diameter) were treated by video-assisted thoracoscopy via a small incision.The nodules were removed during the operation,and then based on the results of quick pathological examination,malignant cases received further surgeries.Results Totally 39 patients were diagnosed with malignant disease,34 of them received small-incision radical lobectomy for primary lung cancer,small-incision resection of the lesions were performed on 5 patients who had bilateral(2 cases) or metastatic lung cancer(3 cases).Benign lesions were confirmed in 14 patients during the operation,and were removed by local resection.All of the patients with primary lung cancer,except one,achieved an mean of 7 months follow-up(ranged 2 to 12 months),31 of the patients survived without tumor during the period;2 patients showed recurrent cancer in 6 months after the operation,and thus received lobectomy.The 2 patients who had bilateral lung cancer and the 3 cases of metastatic lung cancer died in 2 to 6 months(mean,4 months) after the surgery.The 14 benign cases were followed up for 3 to 12 months(mean,7.5 months),none of them had recurrence.Conclusion Video-assisted thoracic small incision is effective in the diagnose and treatment of small pulmonary nodules.

ObjectiveTo investigate the influence of fast track surgery (FTS) on insulin resistance indexes in esophageal cancer patients.MethodsA total of 68 esophageal cancer patients receiving radical operation in our hospital from November 2009 to March 2011 were randomly divided into 2 groups by envelope method:FTS group ( n =34) and control group ( n =34 ).The postoperative first passage of gas by annus and defecation,postoperative hospital stay,hospitalization expenditure,and postoperative complications were recorded.Insulin resistance indexes were measured before operation as well as on the 1st,3rd,and 7th postoperative days,including fasting blood-glucose (FBG),fasting insulin (FINS),serum level of interleukin-6 (IL-6),and C-reactive protein (CRP).The insulin resistance index (HOMA-IR) was calculated at the same time points.ResultsThe postoperative time of first passage of gas [ ( 1.91 ± 1.13 ) d vs.(2.95 ± 1.25 ) d,P =0.000 ] and defecation [ ( 3.75 ± 1.54 ) d vs.(4.84 ± 1.76) d,P =0.007] in FTS group were significantly shorter compared with control group,and the total hospitalization expenditure was significantly lower in FTS group [ (3.19±0.42) ten-thousand yuan vs.(3.98 ±0.36) ten-thousand yuan,P =0.000 ].The preoperative insulin resistance indexes showed no signifcant differences between the two groups ( all P ＞ 0.05 ).One day after operation,the levels of log-HOMA-IR (0.97 ± 0.52vs.1.54±0.57,P=0.000),FINS [ (11.87±4.55) μU/ml vs.(17.16±6.90) μU/ml,P=0.000],IL-6[ (124.15±21.39) ng/Lvs.(138.78±23.60) ng/L,P.=0.009],and CRP [ (62.92±14.78) mg/L vs.(71.07 ± 14.51 ) mg/L,P =0.025 ] in FTS group were significantly lower than those in control group.Three days after operation,the levels of log-HOMA-IR (0.86 ± 0.47 vs.1.27 ± 0.58,P =0.002),FINS [ ( 9.56 ± 4.37 )μU/mlvs.(14.91±6.54) μU/ml,P=0.000],IL-6 [ (140.94±25.12) ng/Lvs.(153.89±24.06) ng/L,P=0.035],and CRP [ (138.59 ±21.61) mg/L vs.(153.17 ±25.20) mg/L,P=0.019] in FTS group were significantly lower than those in control group.Seven days after operation,the level of CRP in FTS group was significantly lower than that in control group [ (53.07 ± 15.84 ) mg/L vs.( 61.59 ± 16.28 ) mg/L,P =0.032 ].ConclusionFTS may promote the early recovery of gastrointestinal function,reduce stress reaction and postoperative insulin,thus being conducive to fast rehabilitation of esophageal cancer patients.

OBJECTIVETo investigate the relationship among oxygen concentration, quorum sensing system, type secretion system, and biofilm production of Pseudomonas aeruginosa.

METHODSA total of 23 clinical strains of Pseudomonas aeruginosa were cultured at different levels of environmental oxygen for three days. Then biofilm mass and alginate were quantified. The expression levels of LasI and RhlI were detected by real time polymerase chain reaction (PCR). The secretion of exoenzyme S was examined by Western blot.

RESULTSBoth the biofilm mass (R=0.455, P=0.000) and alginate (R=0.367, P=0.000) were positively correlated with oxygen concentration. Real time PCR showed that the expression levels of LasI and RhlI were not significantly correlated with oxygen concentration (R=0.025, P=0.794; R=-0.044, P=0.653), the production of biofilm (R=0.001, P=0.990; R=0.011, P=0.909), or alginate(R=0.029, P=0.770; R=0.193, P=0.064). Western blot showed that the optimal oxygen concentration range for exoenzyme S secretion of Pseudomonas aeruginosa ranged 10% to 30%.

CONCLUSIONSHyperoxia can promote the production of biofilm and alginate by Pseudomonas aeruginosa. Las/Rhl system may not participate in biofilm production at the early stage due to the low bacteria amount. The increased production of biofilm may inhibit the expression of Type Secretion system and thus inhibit bacterial virulence.

Alginates ; metabolism ; Biofilms ; drug effects ; Oxygen ; metabolism ; Pseudomonas aeruginosa ; metabolism ; physiology ; Quorum Sensing ; drug effects ; physiology

Objective To investigate the methods and clinical significance of breast cancer treated with photodynamic.Methods From June to December in 2005,photodynamic therapy was used in 12 cases confirmed intramammary lymph node metastasis before operation and 15 cases confirmed chest wall recur- rences by means of lymph node imaging.Results The intramammary lymph node metastasis whose diameter between 0.5～1.0cm measured by lymph node imaging preoperatively completely disappeared when rechecked 3 months postoperatively.Chest wall recurrence regions of breast cancer whose diameter less than 1.0 cm completely remitted.Conclusion Photodynamic therapy is helpful to eliminate the intramammary lymph node metastasis and to cure the postoperative chest wall recurrence of breast cancer.

Objective To analyze the reasons and treatment measures of cerebral infarction following operation of hypertensive cerebral hemorrhage. Methods Sixty-one patients with cerebral infarction following operation of hypertensive cerebral hemorrhage were retrospectively analyzed. Results The outcome was evaluated on basis of activities of daily lives (ADL): Ⅰ 10 cases, Ⅱ 11 cases, Ⅲ 14 cases, Ⅳ 8 cases, Ⅴ3 cases and death 12 cases. Conclusions The occurrence of cerebral infarction following operation hypertensive cerebral hemorrhage is associated with degree of the hemorrhage compression, vasospasm, hypertension,operative skill and postoperative management. The early operation, improved operative skill and hyperbaric oxygenation are the important factors for the prophylaxis and treatment of cerebral infarction.

Adult ; Desmin ; metabolism ; Diagnosis, Differential ; Diagnostic Errors ; Humans ; Male ; Melanoma-Specific Antigens ; metabolism ; Meningeal Neoplasms ; metabolism ; pathology ; radiotherapy ; surgery ; Meningioma ; metabolism ; pathology ; Paraganglioma ; metabolism ; pathology ; Sarcoma, Alveolar Soft Part ; metabolism ; pathology ; radiotherapy ; surgery ; Sarcoma, Clear Cell ; metabolism ; pathology ; Tomography, X-Ray Computed ; Vimentin ; metabolism

OBJECTIVEIn order to accurately reconstruct the acoustic source image, the application of transducer's receiving characteristics in magneto-acoustic tomography with magnetic induction (MAT-MI) is studied.

METHODSThe conductivity phantom model is built, and the magnetic acoustic signals are simulated and the acoustic sources are reconstructed according to the transducer's receiving characteristics.

RESULTSThe reconstructed image of acoustic source is consistent with the topographic shape and size of the phantom model.

CONCLUSIONMAT-MI based on the transducer's characteristics lays the foundation for further study.

Acoustics ; Magnetic Phenomena ; Magnetics ; Tomography ; Transducers

Based on analyzing image edge cloning theory and algorithms, a marginal clone algorithm is proposed with a combination of edge connectivity and noise removal algorithm. Simulation results show that the edge image detected by the algorithm has solved problems of traditional edge discontinuities and tsereve noise. Moreover, it has better edge recognition performance.
Algorithms ; Humans ; Image Enhancement ; methods ; Retinal Vessels

Objective To determine the diagnostic value of shoulder MR arthrography in revealing the injuries of anterior glenoid labrum,and to compare MR arthrography with arm in neutral position with MR arthrography with arm in abduction and external rotation(ABER)position.Methods MR arthrography of the shoulder,including additional oblique axial sequences with the patient in the ABER position,was performed in 44 patients.The injuries of anterior glenoid labrum of these patients were retrospectively evaluated.The result was compared with that of arthroscopy.Results For displaying the abnormalities of anterior glenoid labrum,the sensitivity,specificity,and accuracy of axial MR images with arm in neutral position were 79.3%(23/29),100%(15/15),and 86.4%(38/44),respectively.While the results of ABER position oblique axial images were 93.1%(27/29),100%(15/15),and 95.5%(42/44), respectively.The difference of sensitivity between axial and ABER-position scans was statistically significant (P

BACKGROUND:MicroRNAs (miRNAs) play an important role in many diseases. To analyze the miRNA expression profile in degenerative scoliosis patients is helpful for classifying its pathogenesis. OBJECTIVE: To compare miRNAs expression profile in the intervertebral disc tissue between degenerative scoliosis patients and healthy controls, and to investigate its role in the pathogenesis of degenerative scoliosis. METHODS:Degenerative nucleus pulposus tissues from 48 patients with degenerative scoliosis (male 36, female 12; 58-69 years old) and normal nucleus pulposus tissues from 36 patients with lumbar fractures were harvested to isolate, culture and identify nucleus pulposus cels folowed by total RNA extract. Differentialy expressed miRNAs were screened by microRNA microarray analysis and validated by real-Time qPCR. Target genes of highly expressed microRNAs were predicted by analyzing information from MicroCosm v5, TargetScan 5.1 and microRNA.org databases. Biological signal pathways associated with the target genes were analyzed, and qPCR was used to validate the screening results. RESULTS AND CONCLUSION:Nineteen differentialy expressed miRNAs were identified. The miR-98 was highly expressed in degenerative nucleus pulposus tissue, and the fold change was 6.368. Predicted miR-98 target gene was interleukin-10, which was involved in JAK-STAT signaling pathway and located in upstream of this pathway. In degenerative nucleus pulposus cels of degenerative scoliosis patients, miR-98 was highly expressed, and the corresponding target gene was interleukin-10. These results indicate that JAK-STAT signaling pathway may play an important role in the pathogenesis of degenerative scoliosis.