Objective To study CT and MR imaging features of pulmonary carcinoma of mediastinal type.Methods CT and MRI data (including anatomic site,size,shape,margin of the tumors and the relationship between tumors and mediastinum) of 15 patients with pulmonary carcinoma of mediastinal type confirmed by surgery and pathology were analyzed retrospectively.All patients underwent plain CT scans,and 11 of them also underwent contrast-enhanced CT scans,and 3 of them underwent plain MR scans and Gd-DTPA enhanced MR scans.Results On CT and MRI,the single mass was located subpleural of mediastinum with wide base.There were 5 cases of small cell lung carcinoma,8 squamous carcinoma,1 adenocarcinoma and 1 adenosquamous carcinoma.The majority of tumors manifested as ellipse.The tumors were lobulated in 12 and spicular margins in nine.8 tumors located in superior mediastinum,5 in medium mediastinum,2 in infra mediastinum and 12 in the borderline between the anterior mediastinum and medinum mediastinum.The tumors and enlarged lymph nodes of hilar and mediastinum connected closely in 7 cases.The bronchus were stenosed or obstructed by the tumors in 9 cases,and metastatic bone destruction of thoracic cage in 4 cases.Conclusion The pulmonary carcinoma of mediastinal type is easy misdiagnosed,CT and MRI findings in combination with clinical data can improve its diagnostic rate.

AIM: To explore the effect of hypertonic sugar eyes drops with local to the oxygen therapy for severe corneal edema after cataract surgery.METHODS: Totally 68 patients (68 eyes) with severe corneal edema after phacoemulsification were selected from January 2014 to December 2015 in our hospital, who were aged 53-80(64.45±4.24), including 30 males and 38 females.According to different treatment, they were divided into treatment group (34 cases) given conventional therapy + hypertonic sugar eyes drops with local to the oxygen therapy, the control group (34 cases) given conventional treatment + hypertonic sugar eyes drops.Visual acuity and corneal situation were observed during the treatment.RESULTS: Corneal edema fade time of treatment group was 11.62+0.53d, that of control group was 15.23±0.62d, the difference between the two groups was significant (P<0.05).Preoperative best corrected visual acuity (BCVA) and corneal endothelial cell count had no significantly difference between the two groups while the corneal endothelial cell count were significantly different compared with postoperative of the two groups (P<0.05).At 7d after treatment, the BCVA and corneal endothelial cell count had significantly difference between the two groups (P<0.05), which did not have significant difference at 1mo after treatment (P>0.05).The effective rates of the two groups was significantly different (P<0.05).CONCLUSION: Hypertonic sugar eyes drops with local to the oxygen therapy is effective for severe corneal edema after cataract surgery.

OBJECTIVEThis study aimed to investigate the effects of different tooth preparations on the fracture strength and pattern of failure of teeth with severe wedge-shaped defect restored with post and core crowns.

METHODSAccording to whether the teeth above the wedge-shaped defect was removed (represented by B) or not (represented by A), the ferrule next to the wedge-shaped defect was prepared (represented by D) or not (represented by C), the cast post-and-core was chosen (represented by E) or glass-fiber post and resin core was chosen (represented by F). A total of 64 human mandibular premolar teeth were randomly divided into 8 groups: A1-1 (A + C + E), A1-2 (A + C + F), A2-1 (A + D + E), A2-2 (A + D + F), B1-1 (B + C + E), B1-2 (B + C + F), B2-1 (B + D + E), B2-2 (B + D + F), each group 8 teeth. All the teeth were prepared and restored accordingly and then mounted on an electronic pressure universal testing machine. The maximum fracture strength and the patterns of failure were recorded.

RESULTS1) The fracture strength of Group A1-1 > that of Group B1-1, Group A1-2 > Group B1-2, Group B2-1 > Group B1-1, and Group B2-1 > Group B2-2 with significant differences (P < 0.05). 2) The patterns of repairable fracture in Group A1-2 and B1-2 were both 37.5%, and that of the other groups were 0. Furthermore, the difference was significant, and Group A1-2 and B1-2 were higher than other groups.

CONCLUSIONThe maintenance of the overhang above the severe wedge-shaped defect aid in the improvement of the fracture strength of the tooth restored with post and core crown. The ferrule of the wedge-shaped defect is not recommended to be prepared. Furthermore, the glass-fiber post and resin core is favorable for the re-repair of the teeth than the cast post and core.

Objective To explore a method to improve the nutritional state and immune function of patients after radical gastrectomy,and to decrease postoperative complication rate and accelerate recovery from operation.Methods In line with the concept of fast tract surgery (FTS),a new perioperative nutritional schedule was made for patients prior to radical gastrectomy,ehich included preoperative nutritional risk screen and prophylactic enteral nutrition,early postoperative light enteral nutrition,early ambulation and perioperative nursing care.Patients with gastric cancer were randomly assigned into fast track group or a simple control group.New perioperative schedule was executed in the patients of fast track group and traditional nutrition support in control group.After operation,serum albumen was measured to evaluate the patient's nutritional state and serum IgA to evaluate gastrointestinal immune function.In addition,the time to passage of flatus,postoperative recovery time and complication rate after operation were compared.Results Patiens in FTS group (n=35) showed higher serum albumin and serum IgA on d1 and d3 after operation than those in the control group (n=25) (P

Objective To understand the prevalence of hypertension and diabetes and its associated factors among rural resi-dents in Chongqing ,in order to provide the evidence for conducting non-communicable disease prevention and control in rural area . Methods Rural residents aged above 18 years old were sampled by multi-stage stratified random sampling .The resident sampled was interviewed with the structured questionnaire by face-to-face and examined body weight ,height ,blood pressure ,waist circum-ference .The blood sample was taken to test fasting glucose ,2 h glucose .The associated factors of hypertension and diabetes were i-dentified by Chi-square test and the independent factors of hypertension and diabetes were identified by Logistic regression .Results A total of 2 406 rural residents were interviewed .The amount of salt in taking and oil in taking per person per day self-reported was 6 .7 g and 44 .4 g .The proportion of smoking among rural residents was 21 .0% .The proportion of alcohol use in the past 12 months was 22 .4% .32 .6% of interviewees participated in the regular physical activity .The proportion of overweight and obesity a-mong rural residents was 25 .4% and 6 .2% .The prevalence of hypertension and diabetes was 22 .0% and 9 .4% .The independent factor of hypertension was age(OR = 1 .83 ,95% CI :1 .68 - 1 .98) ,education level(OR = 0 .67 ,95% CI :0 .55 - 0 .82) ,body index(OR= 1 .68 ,95% CI :1 .44 - 1 .96) ,blood glucose(OR = 0 .60 ,95% CI :0 .51 - 0 .70) .The independent factor of diabetes was age(OR =1 .33 ,95% CI :1 .20 - 1 .48) ,gender(OR = 1 .48 ,95% CI :1 .11 - 1 .98) ,education level(OR = 0 .77 ,95% CI :0 .60 - 0 .98) ,body in-dex(OR = 1 .40 ,95% CI :1 .16 - 1 .70) and blood pressure(OR = 0 .77 ,95% CI :0 .64 - 0 .93) .Conclusion The prevalence of hyper-tension and diabetes was high .The risk factors such as unhealthy diet ,physical inactivity ,smoking ,harmful alcohol use ,overweight and obesity is common among rural residents .It should be attached an importance on non-communicable disease prevention and con-trol in rural area .

BACKGROUND: Autologous bone, bone substitute materials and guided bone regeneration (GBR) technique can repair jaw defects, but the absorption speed of bone substitute materials and GBR membrane are faster than the formation speed of new bone, therefore, it affects the volume and shape of new bone.OBJECTIVE: To investigate the role of personalized prefabricated titanium template, autologous bone and nano-hydroxyapatite on restoration of maxillary defect in rabbit.METHODS: A total of 18 rabbits were randomly divided into two groups, and maxillary alveolar defect with 10 mm length and 5 mm high was created. The template was implanted in both two groups, and fastened with titanium screws. Autologous and nano-hydroxyapatite were placed into the defect in experimental group; neither autologous bone nor bone substitute materials were implanted into the defect in control group. New bone formation, X-ray findings, and histological changes with HE stain were carded out 4, 8 and 12 weeks postoperatively.RESULTS AND CONCLUSION: The quality of new bone in experimental group was batter than that in control group 4 weeks postoperatively, but the quality of new bone was almost the same 8 and 12 weeks postoperatively. By paired t-test, there was significant difference in new bone density between the experimental group and the control group 4 .weeks after operation (P<0.01), but there was no significant difference in new bone density between the experimental group and the control group 8 and 12 weeks after operation (P > 0.05). Autologous bone and nano-hydroxyapatite can restore the defect of maxillary alveola.Personalized prefabricated titanium template can play an important role of screen membrane and external scaffold in new bone formation, and remain shape of new bone.

Objective To prepare a thrombus-targeted ultrasonic contrast agent and to investigate its targeted ability to fresh blood clots. Methods We first synthesized FITC-KGDS-Palm compound, and then prepared thrombus-targeted microbubbles using "ultrasound & high speed shearing method".Fluorescence labeling thrombus-specific peptides and KGDS,directed at the activated glycoprotein(GP)Ⅱb/Ⅲa receptor of platelets were attached to the surface of lipid microbubbles. The concentration and size of TUCA were measured by Malvern Zeta Sizer Nano-ZS590 and Coulter counter.Immunofluorescence was applied to confirm the conjugation.The conjunct ratio was assessed by flow cytometer (FCM).Results The KGDS-TUCA was straw yellow turbid liquor,and the concentration was 1.5×10~9/mL,and the average size was 1.5 μm. The targeted microbubbles conjugated with the thrombus-specific peptides showed bright green rings by fluorescence microscope.FCM demonstrated that the wavelength of shell of KGDS-TUCA changed greatly,and the conjunct ratio was 90.04%.In vitro study showed KGDS-TUCA remained stable for 48 h at 4 ℃ and target-attached to blood clots and showed good stability.Conclusion The ultrasound & high speed shearing method to prepare TUCA is easy and in favor of purification.KGDS-TUCA has high specific biological activity.The conjunct ratio and stability of KGDS-TUCA are excellent.

Objective To understand the current situation and level of clinical laboratory about the analysis of cellular morphology in Tibet region .Methods Authors investigated the information about the staff of clinical laboratory testing the patient′s blood smear under microscope ,executing the rules and regulations by using standard questionnaires .Results Some of the clinical laboratory didn′t founded the rule and standardization of rechecking about abnormal blood routine (5/15 ,33 .3% ) .Some of the divi-sion leadership didn′t pay enough attention to the staff′s basic operation (2/15 ,13 .3% ) .Most of the staff didn′t being trained about cellular morphology in special purpose workshop (6/43 ,88 .8% ) .Some of the hospital didn′t carried out the chemistry stai-ning about blood cells(10/15 ,66 .7% ) .Conclusion It′s important to promote the quality and level about the analysis of cellular morphology in Tibet region .

Herpes simplex virusⅠ(HSVⅠ) regulating the pathway of transcription and translation modify in host cell is a very systematic and complicate system. A clear understanding of the concrete mechanisms of infection will greatly help to comprehend the virus replication and the interaction with the host cell. By the analysis of 2-DE, the heterogeneous nuclear ribonucleoprotein H2 in human fetal liver cell represent distinction after the HSVⅠinfection.Utilization of Northern blot and Western blot technologies verified the expression of hnRNP H2 in different stage of virus infection is varied.

Objective To investigate neuroprotective effect of AM-36 on secondary brain injury following traumatic brain injury(TBI)in rats.Methods A total of 38 male Sprague-Dawley rats were divided into an experimental group,a control group and a sham operation group,then sustained to moder- ate TBI.AM-36(0.1 ml/100 g)was administered intraperitoneally in the experimental group and isoton- ic saline solution was administered intraperitoneally in the control and the sham operation groups at 30 mi- nutes,24 and 48 hours after TBI,respectively.The brain water content was determined at 24 hours after TBI.Rats were sacrificed by decapitation at 24 hours or one week after TBI for observing histological changes in peripheral cortex,thalamus and hippocampus by means of Hematoxylin and Eosin staining and Fluoro-Jade(F-J)staining.Results The brain water content of bilateral hemispheres 24 hours after TBI in the experimental group was significantly decreased,compared to that of the control group.Histo- logical examination revealed less degenerating neurons(F-J positive neurons)in the cortex,thalamus, CAI and CA3 of the hippocampus in AM-36 treated rats 24 hours and one week after injury(P＜0.05). Conclusion Systemic administration of AM-36 at the early stage after TBI can decrease brain water content and exert neuroprotective effect on TBI.F-J staining can be used for histopathologic quantitation of neuronal damage,for it can accurately exhibit pathologic changes following TBI induced by fluid per- cussion.