Objective To investigate the clinical application of low dose chest CT examination with PACS/RIS-HIS-Health screening system.Methods 6038 subjects underwent chest low-dose CT examination were retrospectively analyzed in this study. With or without PACS/RIS-HIS-Health screening system,the physical examination workload per day,average examination duration and waiting duration were retrospectively calculated and compared,respectively.Results At the same working hours,the low dose chest CT screening workload was sharply increased from 73.87 to 127.4 per day (t=11.526,P<0.001).The mean CT examina-tion duration was decreased from 2.58 to 1.8 minutes per subject (t=8.443,P<0.001).30 percent of waiting duration were saved approximately (t=6.951,P<0.001).All the related management departments could do statistics and analyze the data online with high efficiency via the screening system.Conclusion PACS/RIS-HIS-Health screening system can optimize the workflow and im-prove the work efficiency of chest low-dose CT screening.

Objective To investigate the influence of human papillomavirus (HPV) 16 E6 gene silencing by small interfering RNA (siRNA) on the expression and the promoter hypermethylation status of E-cadherin (E-cad) in cervical cancer SiHa cell line. Methods siRNA which used lentivirus as the vector was used to knock down the HPV16E6 gene in cervical cancer SiHa cell line. The expression levels of HPV16E6 mRNA, E-cad mRNA and protein in siRNA-HPV16E6 SiHa cell line were detected by RT-qPCR and Western blot, respectively. Methylation specific PCR (MSP) method was used to detect the methylation status of E-cad gene (CDH1) promoter in siRNA-HPV16E6 SiHa cell line. Results The E-cad mRNA expression levels in siRNA E6 group, empty vector group and blank control group were 4.755±1.085, 1.224± 0.840, 1.327±1.221, respectively. The protein expression levels were 0.616±0.019, 0.325±0.016, 0.299±0.015, respectively. The expressions of E-cad mRNA and protein in siRNA E6 group were significantly higher than those in the empty vector group and blank control group (F = 21.346, P < 0.01; F = 323.398, P < 0.01), and the difference between the empty vector group and blank control group was not statistically significant (P >0.05). After knocking down HPV16E6 gene, the methylation status of E-cad gene was weakly positive, and the intensity of the amplified products was significantly weaker than that in the empty vector group and blank control group, while the unmethylation amplification was positive. Conclusions Knocking down the HPV16E6 gene increases the expression of E-cad in cervical cancer SiHa cell line, and decreases the level of CDH1 promoter methylation. To a certain extent, it partly reverses the hypermethylation status of CDH1 promoter, and causes E-cad to be re-expressed.

Objective To observe the effect and significance of high-expression HOXB4 in controlling proliferation and cycle of human cartilage endplate stem cells (CESCs).Methods CESCs were divided into adenovirus-mediated HOXB4 delivery group (Group A),empty virus delivery group (Group B) and blank control group.Gene and protein expressions of HOXB4 in Group A were detected by PCR and Western blot respectively; cell proliferation among those groups were determined using cell counting kit 8 (CCK8) technique; cell cycle among those groups was measured by propidium iodide (PI) assay and flow cytometry.Results (1) Over-expressed HOXB4 virus was transferred to CESCs successfully; (2) Real-time quantitative PCR results showed 3.6 times higher expression of HOXB4 in Group A than in blank control group.Western blotting indicated HOXB4 protein in Group A was 3 times the level in control group; (3) HOXB4 promoted CESCs proliferation (P ＜ 0.05) and blocked the cells at phase S.Cells at phase S in Group A was increased from 29.27 to 30.28 (P ＜ 0.05).Conclusion Over-expressed HOXB4 accelerates proliferation of CESCs and increases cell population at phase S,indicating that HOXB4 hindering CESCs degeneration may be an approach to treat lumbar intervertebral disc protrusion.

Objective To analyze the long-term efficacy and adverse effects of radiotherapy in the treatment of recurrent lesions at the vaginal cuff after hysterectomy for cervical cancer, and to investigate prognostic factors.Methods A total of 105 patients who were admitted to our hospital due to recurrent lesions at the vaginal cuff after hysterectomy for cervical cancer from January 2005 to July 2011 were enrolled in this study and divided into group A (6-12 months), group B (12-24 months), and group C (≥24 months) according to the time to recurrence.All patients received radiotherapy and only 96 patients also received concurrent chemotherapy.The long-term outcomes and adverse events were compared between the three groups, and the prognostic factors were analyzed.Survival curves were analyzed by the Kaplan-Meier method.Results The follow-up rate was 98.1%.The response rates of group A, B, and C were 60%, 82%, and 86%, respectively.The 3-and 5-year survival rates for all patients were 58.1% and 31.4%, respectively.The median survival time for all patients was 42 months.Group C had a significantly longer median survival time than group A (P=0.010).The patients with a maximum tumor diameter of<4 cm had a significantly better treatment outcome than those with a maximum tumor diameter of ≥4 cm (P=0.000).There was a significant difference in median survival time between the patients with recurrent lesions limited to the vaginal cuff and those with recurrent lesions beyond the vaginal cuff (47 months vs.32 months, P=0.005).Conclusions For patients with recurrent lesions at the vaginal cuff after hysterectomy for cervical cancer, radiotherapy is a salvage treatment and has significant clinical efficacy.The treatment outcome and prognosis are related to time to recurrence, tumor size, and the extent of recurrent lesions.

Objective To evaluate the effect of transcatheter arterial chemoembolization (TACE) and delayed surgery for infant hepatoblastoma.Methods TACE was performed with the initial digital subtractive angiography (DSA) under general anesthesia 1-3 times in 8 infants with huge hepatoblastoma, whose age was 2 to 12 months. DSA was done via arterials in hepatoblastoma each time before chemoembolization. The arterials were perfused with chemodrugs and suspensions in ultrasome iodized oil , and were blocked with spring rings. DSA findings indicated that the tumor shrank without new tumorous arterials after 1 month in 6 cases, and 4 of them showed no tumorous staining, and the delayed surgery was performed successfully 1 week later in 6 infants. One boy underwent systemic chemotherapy alone during 6 months after 3 times of TACE. Results TACE therapy did not encounter any major technical problem or toxic reaction caused by chemotherapy. The following DSA test 4 weeks later did not detect any new tumorous vessels in 6 cases. Six children received TACE and surgery had been followed-up with no tumor recurrence for months averagely. The boy underwent TACE and venous chemotherapy for 6 months , without surgery , had been followed-up for 48 months until the present report. CT, AFP and DSA did not show any hints of tumor recurrence. Six cases receiving 3 times TACE combined with surgery survived without tumor recurrence. Conclusions TACE is a very effective, safe and helpful therapy for hepatoblastoma, which stressed the repeated use of spring ring to block tumor vessels lastingly if necessary. If surgery is required, DSA test is needed beforehand to detect new tumorous vessels or neoplasm. If there is any , TACE is repeated. TACE combined with surgery may provide an additional promising choice in the treatment of hepatoblastoma, and repeated TACE alone may cure hepatoblastoma in infants.

Adult ; Brachiocephalic Trunk ; injuries ; Emergency Treatment ; Humans ; Male ; Middle Aged ; Rupture ; Tracheostomy ; adverse effects ; Young Adult

Objective The purpose of this study was to determine the relationship between microecological balance and the syndrome type of acute upper respiratory infection.Methods The nature and quantity of pharyngeal flora were assayed in 31 cases of wind-cold acute upper respiratory infection and 36 cases of wind-heat acute upper respiratory infection,with 30 healthy cases served in control group.Results There was a significant rise of concentration of pharynx flora in acute upper respiratory infection than that in control group,whereas there was a significant decrease of diversity of pharynx flora in acute upper respiratory infection than that in control.Conclusion Imbalance of pharyngeal micro-ecology is one of the major factors leading to acute upper respiratory infection,manifested as insufficiency of genuine Qi failure in guarding.

2 mg/dl);the others were in the low-risk group.High-risk patients received more superselective embolization with lower dose of embolization agent and fewer numbers of procedure(1.4 vs 2.3,P

Objective To investigate the diagnostic value of apparent diffusion coefficient in the evaluation of sinonasal masses.Methods Sixty-seven sinonasal solid masses over 1 cm in diameter confirmed by pathology were retrospectively analyzed,all patients underwent preoperative routine MRI with DWI,the ADC values were measured in ROI within the solid mass.The patients were divided into benign and malignant groups by the histopathology,according to pathological findings,the patients were further divided into the hematolymphoid tumors,the malignancy of epithelium and mesenchymal tissue,the benign tumors of epithelial and mesenchymal tissue,and vasogenic masses.ANOVA test and t test were used to compare the ADC values of different groups.The receiver operating characteristic curve (ROC) was constructed using various cut points of ADC for different parameters to confirm the diagnostic threshold value and evaluate the diagnostic efficacy.Results All lesions were solitary.There were 22 malignant tumors,of which 6 lesions were hematolymphoid tumors and 16 lesions malignancy from epithelium and mesenchymal tissue.There were 45 benign tumors,of which 22 lesions were benign tumors from epithelium and mesenchymal tissue and 23 lesions vasogenic masses.The mean ADC value of malignant and benign masses was(0.88 ± 0.26) × 10-3 mm2/s and (1.54 ± 0.41) × 10-3 mm2/s respectively.There was statistically significant differences between them (t =6.897,P ＜ 0.01).The mean ADC value was(0.63 ± 0.10) × 10-3 mm2/s in hematolymphoid tumors,(0.97 ±0.24) × 10 3 mm2/s in malignancy from epithelium and mesenchymal tissue,(1.38 ± 0.23) × 10-3 mm2/s in benign tumors from epithelium and mesenchymal tissue,(1.68 ± 0.49) × 10-3 mm2/s in vasogenic masses respectively.There was statistically significant difference among all 4 groups(F =22.788,P ＜ 0.01),and the differences between any 2 groups were still statistically significant(P ＜ 0.05).The area under the ROC calculated was 0.945.Using an ADC value of 1.08 × 10-3 mm2/s as the threshold value for differentiating malignant from benign lesions,the best result obtained had a sensitivity of 81.8％ (18/22),specificity of 97.8％ (44/45),accuracy of 92.5 ％ (62/67).Conclusion The ADC value is a valuable tool in differentiating benign from malignant masses and different kinds of masses in sinus and nasal cavity.