Objective: To observe the synergetic effect of folic acid and genistein on apoptosis in the early stage of neuron and its possible mechanism. Methods: Cyclophosphamide was added to primary cultured neurons to induce apoptosis. Three different dosages of folic acid and genistein were used to inhibit apoptosis. The results were observed by flow cytometry and scanning electron microscopy (SEM). Results: 1.Folic acid and genistein might play a role in early stages of neuron apoptosis, and the synergetic effect was demonstrated when folic acid and genistein were administered together. 2. The membrane changes in early stages of neuron apoptosis observed by scanning electron microscope were also in agreement with the flow cytometry data. Conclusion: Genistein might reinforce the protective effect of folic acid on neural tube defects by restraining the apoptosis of the early stage of neuron.

Objective To evaluate CT in the diagnosis of olfactoryneuroblastoma.Methods The CT characteristics of 7 cases with esthesioneuroblastoma proven by surgery and biopsy were analyzed retrospectively.Results According to Kadish staging,there were 6 cases with stage C,1 case with stage B.All the tumor located in nasal cavity and invaded ethmoid sinus(7 cases),orbit(3 cases),maxillary sinus(2 cases),sphenoid sinus (2 cases),frontal sinus(1 cases).Intracranial invasion occurred in 3 cases.Among 4 cases of enhanced CT scanning,3 cases were obviously and heterogeneously enhanced,1 case was moderately enhanced.Conclusion CT scanning can define the area of tumor involvement and tumor staging,it is useful for clinical treatment.

Objective To test and evaluate measurement uncertainty and relational performance parameters of the verification device for laser protective spectacles.Methods By using realtime beam-splitting surveillance,several performance parameters,including the measurement repeatability of the verification device,optical density of laser protective spectacles in different laser exposure conditions and its damage threshold,were tested.The measurement modules of the main performance parameters were built up as the experiment & technology platform for performance evaluation of laser protective spectacles and for measurement uncertainty appraisal of verification device.Results Laser wavelengths of the verification device were 1064nm and 532nm,response range of wavelength was from 0.4?m to 1.1?m,measuring range of laser energy was from 10-8 J to 0.3J,measuring range of optical density for laser protective spectacles was from 0.1 to 8.0,measuring repeatability was 0.37%,and measuring uncertainty was 5% (k =2).Conclusion The automatic verification device is steady and reliable.The achieved performance indexes accord with the designed requirement for laser protection.

Objective To explore exenatide in the treatment of metformin(MET)alone,sulfonylurea (SU)alone or MET + SU combination therapy with poor glycemic control in type 2 diabetic pa-tients and to find effective nursing measures.Methods 24 patients were randomly divided into the con-trol group and the exenatide group with 12 patients in each group.In the exenatide group,exenatide 5μg twice a day for 4weeks,then 10μg twice a day for 12 weeks.Changes of HbAlc,body weight,BMI,FBG,P2hBG,and rate of adverse reaction were compared between two groups.Results Glycosylated hemoglobin (HbAlc),body weight,BMI,FBG,P2hBG in the control group before and after treatment showed no significant difference,while the exenatide group showed better results compared with those before treatment and the control group.Nursing intervention played evident effect on reducing adverse effect such as nausea,vomiting,diarrhea,low blood sugar,headache.Conclusions For patients with type 2 diabetes,using MET,SU alone or MET + SU combination therapy showed poor results of blood sugar control,addition of exenatide therapy can effectively control blood sugar,nursing intervention can significantly alleviate the adverse effects of patients.

Objective Based on the principles of laser radiation protection, medical metroiogy and photoelectron technology, an automatic verification device and testing technology to provide verification and performance evaluation for laser protective spectacles and equipments which have the various functions in laser protection have been developed and established. Methods The current system comprises laser source, laser measuring instruments, software of computer detection and control and modules of optics and mechanics used in auxiliary equipment. By use of the verification device and the special test-recording method to be designed and studied by us, the measured data can be automatically acquired, processed, recorded, saved and printed and, furthermore, many parameters on protective performance of the measured laser protective spectacles can be tested and given. Results Laser wavelength of the verification apparatus are 1 064 nm and 532 nm, response range of wavelength is from 0.4 m to 1.1 μm, measuring range of laser energy is from 10-8 J to 0.3 J, measuring range of optical density for laser protective spectacles is from 0.1 to 8.0, stability is 0.21%, measuring uncertainty is 5%(k=2). Conclusion The automatic verification device is steady and reliable. The achieved performance indexes accord with the requirement of national standard on laser protection.

BACKGROUND:Some scholars have found that cervical vertebral body bone trabecula was reduced,became thin,even perforated in old patients with osteoporosis.Whether this change will induce cervical vertebral body deformation,and what relationship to the onset of cervical syndromeOBJECTIVE:To study the relation of cervical spondylotic myelopathy and osteoporosis by measuring and comparing.METHODS:A totaI of 40 subjects with normal lumbar vertebra density and without cervical spondylosis were enrolled as control group,averagely 32 5 years.A total of 30 patients with cervical spondylosis served as cervical spondylosis group,averagely 43.6 years.Totally 46 patients with cervical spondylosis and osteoporosis served as combined with osteoporosis group,averagely 58.6 years.116 subjects underwent radiograph Height and sagittal diameter of the vertebral body ratio of height to sagittal diameter of the vertebral body.and ratio of sagittal diameter of cervical canal/vertebra body were measured.RESULTS AND CONCLUSION:Compared with the control group.vertebral height was decreased.and sagittal diameter became longer(P＜0.05),and the ratio of sagittal diameter of cervical canal/vertebra body became smaller(P＜0.05)in the combined with osteoporosis group.Vertebral body deformation was characterized by decreased vertebral height and prolonged sagittal diameter became flat.Results suggested that osteoporosis induced cervical vertebral deformation,correlation between osteoporosis and cervical spondylosis,which may be a factor for cervical spondylosis development.

Objective To summarize the effectiveness and security of endoscopic removal of foreign bodies of battery in the gastrointestinal tract in children.Methods We analyzed retrospectively the clinical data of 13 patients who swallowed foreign bodies including button cell and cylindrical battery.The 13 patients were treated in our hospital between July 2011 and April 2015,aged 19 months to 12 years.Results A total of 9 cases of foreign bodies in esophagus,including embedded in the first the esophageal stenosis in 4 cases,the second the esophageal stenosis in 3 cases,cardia in 1 case,and 4 cases of foreign body in stomach.We successfully removed 16 foreign bodies of the battery in endoscopy.No serious complications such as perforation,hemorrhaging happened during and after operation.Conclusion It is one relatively safe and effective method of diagnosis and treatment of endoscopic removal of foreign bodies of battery in gastrointestinal tract in children.

Objective To evaluate the value of endoscopy with narrow-band imaging(NBI)for tar-geting biopsy of lesions in children with allergic colitis. Methods The colorectal lesions under the model of traditional white light imaging and NBI in children with allergic colitis were observed and recorded. The re-sults of biopsy under white light imaging and NBI were compared with postoperative pathological diagnosis. Results A total of 60 patients completed the study. Under NBI,47(78. 3%)rectal lesions,52(86. 7%) sigmoid colon lesions and 19(31. 7%)descending colon lesions were found. There were 21(35. 0%),25 (41. 7%),and 8(13. 3%)lesions in the transverse colon,ascending colon and iloececus,respectively. For the lesions in transverse colon and ascending colon,the detection rate under NBI was significantly higher than that under white light endoscopy[35. 0% VS 16. 7%(10/ 60),P<0. 05;41. 7% VS 18. 3%(11/ 60),P<0. 05]. No significant difference was found between two methods for the sigmoid and rectal lesion[86. 7% VS 83. 3%(50/ 60),P>0. 05;78. 3% VS 76. 7%(46/ 60),P>0. 05].There was no significant difference in ileo-cecus and descending colon[13. 3% VS 5. 0%(3/ 60),P>0. 05;31. 7% VS 28. 3%(17/ 60),P>0. 05]. The targeted biopsy results by NBI indicated that the ratio of EOS≥6/ HP was significantly higher than the biopsy results by white light imaging. Conclusion NBI is easy to operate and can discern the microcosmic structure which cannot be observed by the traditional endoscopy. It can provide higher diagnostic accuracy of allergic colitis. After suspicious lesions were found under conventional endoscopic check,NBI could be used to guide the targeted biopsy.

Objective To explore the effect of diabetic liaison nurses on controlling blood sugar levels in patients with hyperglycemia in department other than endocrinology. Methods Four hundred diabetic patients with high blood sugar were selected from January to December, 2014 in department other than endocrinology. They were divided randomly into 2 groups equally:the control group and the observation group. The control group received traditional nursing care, while blood sugar management was carried out by diabetic liaison nurse in the observation group. Result Pre-discharge sugar metabolism in the observation group was significantly better than that in the control group (P<0.05). Conclusion The diabetic liaison nurses in other departments than the endocrinology department can help control blood sugar levels in patients with hyperglycemiain.

Objective To evaluate value of narrow band imaging(NBI) endoscopy for children with abdominal Henoch?Schonlein purpura ( HSP ) . Methods A total of 46 patients with abdominal HSP were enrolled into the observation group(NBI intervention) from November 2010 to February 2016.Diagnostic rates of white light and NBI endoscopy in abdominal HSP patients, IgA positive rates of targeted biopsies and severe complications were retrospectively analyzed. A total of 25 abdominal HSP patients with no NBI intervention admitted from 2007 to 2009 were randomly enrolled into control group. Data of the control group were compared with those of observation group. Results In observation group, the diagnostic rate under NBI was significantly higher than that under white?light endoscopy[91. 3%(42/46)VS 67. 4%(31/46),χ2=8. 02,P<0. 05]. IgA positive rates of targeted biopsies under NBI was significantly higher than that under white?light endoscopy [ 95. 7%( 88/92 ) VS 69. 6%( 64/92 ) ,χ2 = 21. 79, P<0. 05 ] . Three patients developed such serious complications as digestive hemorrhage as predicted. Compared with control group, abdominal pain and blood stool relief time (10. 96±5. 32 d VS 19. 68±4. 29 d,t=7. 50,P<0. 01), fasting time(10. 37±5. 42 d VS 8. 80± 3. 71 d,t=7. 73,P<0. 01), hospital stay (18. 80±7. 11 d VS 23. 12±4. 36 d, t=3. 16,P<0. 01), time of stool occult blood negative ( 11. 41 ± 6. 30 d VS 19. 12 ± 4. 09 d, t=6. 22, P<0. 01 ) in observation group were significantly shortened. Conclusion NBI endoscopy is valuable for improving the diagnostic accuracy and biopsy accuracy and complication prediction of abdominal Henoch?Schonlein purpura in children.