Objective:To study the relationship between smoking and P53 protein expression in oral tumor tissue.Methods:The expression of P53 protein in oral tumor tissue was detected in 22 smoking cases and 32 nonsmoking cases by immunohistochemical SP method. SAS software was used for statistic analysis.Results:The positive expression rate of P53 protein in smokers (90.91%) was higher than that in nonsmokers (46.88%,P0.05). Conclusion:Smoking may stimulate the mutation of p53 gene and play an important role in the carcinogenesis of oral tissues.

Objective:To study the genetic toxic effect of smoking on human oral mucosa,and the DNA damage of exfoliated oral mucosa cells.Methods:The DNA damage of exfoliated oral mucosa cells was investigated by single cell gel electrophoresis(SCGE)in 12 cases of malignant tumor,19 cases of benign tumor and 10 health controls.There were 24 smokers and 17 non-smokers among them.The tail length and frequency of comet cells were used to measure DNA damage.SPSS and SAS software were used for statistical analysis.Results:Malignant tumors had a longer tail length and higher frequency of comet cells than benign tumors and health controls,and the difference was statistically significant(P0.05).The DNA damage of exfoliated oral mucosa cells in smokers was more serious than that of non-smokers(P

Objective To observe the curative effect of Qujun Tongyou Decoction instead of antibiotics in treatment of Helicobacter pylori (HP) associated gastric disease, and explore the mechanism of action. Methods In 236 patients, 140 cases of newly diagnosed patients were randomly divided into treatment group of 80 cases and control group of 60 cases, 96 cases of retreatment patients were randomly divided into treatment group of 56 cases and control group of 40 cases. The control group was given western quadruple therapy:newly diagnosed patients with rabeprazole sodium enteric-coated capsules+colloidal bismuth pectin+Amoxicillin Capsules+clarithromycin dispersible tablets;retreatment patients with rabeprazole sodium enteric-coated capsules+colloidal bismuth pectin+metronidazole tablets+levofloxacin tablets. The treatment group was given rabeprazole sodium enteric coated capsules and colloidal bismuth pectin plus Qujun Tongyou Decoction. All patients were treated for 2 weeks. 1, 3, 6 months after treatment, 14C-urea breath test was detected, HP negative rate, recurrence rate, clinical symptoms, and adverse reaction were observed. Results HP negative rate, the total effective rate and the recurrence rate in treatment group were different with the control group (P<0.05). There was significant difference in the rate of symptom control between treatment group and the control group (P<0.01). No adverse reaction showed in treatment group. Conclusion Rabeprazole sodium enteric-coated capsules and colloidal bismuth pectin combined with Qujun Tongyou Decotion can effectively inhibit and kill HP, promote the repair and healing of ulcer, control symptoms, reduce HP recurrence, lessen adverse reaction, is effective in the treatment of HP associated gastric diseases.

Objective To explore the incidence rate and high-risk factors for bronchopulmonary dysplasia(BPD) in premature infants of mechanical ventilation.Methods From Jan 2008 to Dec 2009,196 very low birth weight infants with gestational age less than 32 weeks in our NICU were enrolled in the study.61 cases had the histories of mechanical ventilation.The clinical materials of 21 cases with BPD were compared to 41 cases without BPD in retrospective analysis.Results The total incidence of BPD in the very low birth weight infants with gestational age less than 32 weeks was 10.7%,and 34.4% in those infants with mechanical ventilation.The gestational age and birth weight of BPD group were lower than those without BPD,and the rates of premature rupture of fetal membrane and complicated neonatal respiratory distress syndrome (NRDS),postnatal infection,with long time intravenous nutrition in BPD group were higher than those without BPO control (P<0.05).Gender,asphyxia history,the use of pulmonary surfactant (PS),positive end-expiratory pressure,and mean airway pressure were not different significantly between two groups (P>0.05).Peak inspiratory pressure (PIP),the time of mechanical ventilation and oxygen administration were different significantly between two groups (P<0.05).NRDS,postnatal infection,the duration of ventilation,and hyperoxia were the risk factors for BPD,and the regression coefficient were 3.683,1.541,1.188 and 1.647.Conclusion Preventing premature,low birth weight,NRDS,shortening the duration of high peak inspiratory pressure and hyperoxia with mechanical ventilation and the use of the parenteral nutrition,managing the infection of the prenatal and postnatal are the key points of preventing BPD.

Objective To explore risk factors of type 2 diabetes mellitus in suburban of Tianjin.Methods A frequently matched community-based case-control study was conducted in Tianjin suburb.The multi-phasic stratified cluster sampling method was adopted.Finally 9 961 people were selected as study subjects.All of 585 patients with type 2 diabetes mellitus were recruited as cases,and 620 persons without type 2 diabetes mellitus were chosen as controls.The two groups were frequently matched by age and sex.Results Family history of diabetes mellitus(OR=2.671),depression(OR=3.759),higher level of BMI(OR=1.502) and WHR(OR=1.740),history of hypertension(OR=2.016),history of hyperlipoidemia(OR=1.867),were risk factors for type 2 diabetes mellitus while increased the risk of type 2 diabetes.And increasing intake of fruits(OR=0.736) was shown to be reversely associated with diabetes mellitus.Conclusions Family history of diabetes mellitus,depression,overweight,central obesity,history of hypertension,history of hyperlipoidemia were risk factors of type 2 diabetes mellitus in suburban of Tianjin,while increasing intake of fruits was shown to be a protective factor of diabetes mellitus.

Objective To explore the utility of the diagnosis and typing to the ureterocysts using ultrasonography.Methods Based on the difference of anatomical location and appearance of cysts.the ureterocysts were divided into 4 types as fllowing:⑴Type of inside bladder:ureterocysts completely location in the inside of bladder.⑵Type of outside bladder:ureterocysts completely location in the outside of bladder.⑶Type of mixture:a part of cysts location in the inside of balader and other part localed in the outsider.⑷Type of ectopia:rare,cysts location in the neck of bladder or urethra usually complicated whith double kidney and abnormal location in the end of the ureter.Results UItrasonographic manifestations of 15 cases for ureterocele were reported.There were 3 cases of bilateral ureterocele and 18 cysts with a diameter 0 4cm～6 0cm. In which ,Type of inside bladder had 8 cases with 9cysts altogether .Type of outside bladdder had 2cases with 2 cysts only,Type of mixture had 5cases with 7 cysts;Type of ectopia had no one in this report .All cases were confirmed by ureteropyelography,in which,6 cases confirmed by surgical pathological examinations.Conclusion Ultrasonography has a high clinical value in the diagnosis and typing of ureterocele.

Objective To observe the effect of healthy side limb training on stroke patients with hemiplegia.Methods 160 stroke patients with hemiplegia were divided into the observation group and control group.All patients in both groups were given routine rehabilitation,but the patients in the observation group were given the healthy side limb training.All patients were evaluated with Brunnstrom grades,Bathel Index(BI),Hamilton Depression Scale(HAMD)and the function of healthy side hand before and 5 months after treatment.Results After treatment,the function of trouble side limb of patients in both groups increased significantly compared with those before treatment.The scores of Brunnstrom grades,BI,HAMD and the function of healthy side hand of patients in the observation group increased significantly compared with those in the control group(P<0.01).Conclusion The healthy side limb training may improve the function of trouble side limb,activities of daily living and depression of stroke patients with hemiplegia.

Objective To investigate the effects of preconditioning with different concentrations of sevoflurane on the expression of Toll-like receptor 4 (TLR4) in rats with acute lung injury (ALI) induced by lipopolysaccharide (LPS).Methods Thirty adult male Sprague-Dawlcy rats,wcighing 200-250 g,were randomly divided into 5 groups (n =6 each):normal saline group (group NS),group ALI,and preconditioning with different concentrations of sevoflurane groups (groups S1-3).ALI was induced by intratracheal instillation of LPS 5 mg/kg.Groups S1-3 inhaled 1.2％,2.4 ％ and 4.8 ％ sevoflurane for 30 min respectively,and ALI was induced 30 min later.The rats were sacrificed at 12 h after administration of LPS or normal saline and lungs were removed for microscopic examination and for determination of TLR4 mRNA and protein expression in lung tissues and concentrations of TNF-α and IL-1β in broncho-alveolar lavage fluid (BALF).W/D lung weight ratio was calculated.Results Compared with group NS,W/D lung weight ratio and concentrations of TNF-a and IL-1β in BALF were significantly increased and the expression of TLR4 mRNA and protein was up-regulated in groups ALI and S1-3 (P ＜ 0.01).Compared with group ALI,the parameters mentioned above were significantly decreased in groups S2 and S3,and the concentrations of TNF-α and IL-1 β in BALF were significantly decreased and the expression of TLR4 mRNA was down-regulated in group S1 (P ＜ 0.05 or 0.01).The parameters mentioned above were significantly lower in groups S2 and S3 than in group S1 (P ＜ 0.05).The pathologic changes were significantly attenuated in groups S1-3 compared with group ALI.Conclusion Preconditioning with sevoflurane can concentration-dependently reduce LPS-induced ALI in rats through inhibiting the up-regulation of TLR4 expression in lung tissues and reducing the inflammatory response.

Objective To investigate the clinical characteristics and prognosis of patients with different molecular subtypes of breast cancer.Methods A cohort of 716 breast cancer patients which had clear immunohistochemical detection were investiged.Their molecular subtypes were categorized as Luminal A,Luminal B,HER-2 over-expressing and basal-like subtypes,based on detection of ER,PR,HER-2 expression,and the clinical data including characteristics,relapse,prognosis and prognostic factors of the patients with different subtypes of breast cancer were analyzed retrospectively.Results There were no significant differences among different molecular subtypes at the age,menopausal status,production times,clinical stage,and radiation therapy(P ＞0.05).There were significant differences among different molecular subtypes at axillary lymph node starus (x2 =17.208,P =0.001),turner size (x2 =20.528,P =0.000) and operation method (x2 =24.242,P =0.000) and chemotherapy regimens (x2 =10.711,P =0.013).Univariate and multivariate analyses showed that clinical stage (x2 =17.005,P =0.002),axillary lymph node status (x2 =11.267,P =0.000) and molecular typing(x2 =125.634,P =0.000) were independent prognostic factors affecting long-term survisal rate.Conclusion Breast cancer patients in different subtypes have different long-term survival rate.The patients in basal-like subtype have the worst long-term survival rate.Molecular subtypes may provide important information to predict the prognosis of breast cancer.

Objective To explore the correlation between imaging features and pathological findings of alveolar soft part sarcoma (ASPS).Methods The clinical data,radiographic images and pathological characteristics of seven patients with histopathologically proved ASPS from 2003 to 2009 were retrospectively reviewed.Digital radiography (DR),plain CT,pre and post-contrast MR and DSA were performed in all patients.HE staining and periodic acid-Schiff (PAS) staining were used in pathological examination and CD34 were marked in immunehistochemical study.Results All patients were females.Their age ranged from 16 to 37 years with median of 24 years.Two tumors were located in pelvics,three were located in thighs,and two were located in legs.DR and CT plain scan features of ASPS were non-specific.MR demonstrated the tumors with large diameter and well defined margin locating in the deep tissues.Tumors were hyperintense on T2-weighted and T1-weighted images with many flow void vessels and persistent remarkable enhancement.There were numerous vessels with arteriovenous fistula on DSA.Pathological examination revealed solid nests of several polygonal tumor cells arranged in an alveolar pattern and separated by thinwalled,sinusoidal vascular channels.Tumor cell were noted on periodic acid-Schiff (PAS) stains.And the endothelial cells of sinusoidal vascular channels were positive on CD34.Conclusions As a malignant tumor which predominantly developed in deep location of trunk or extremities in young females,numerous void signal and hyperintensity on T1-weighted were the features of ASPS on MR.Numerous vessels could also be confirmed on DSA.These image findings were correlated closely with the pathological manifestations.