Objective To construct new model of experimental abdominal aortic aneurysm (AAA) and detect the AAA outer diameter and the change of induce nitric oxide synthase(iNOS) in the abdominal aor-tic aneurysm in different period,and analysis the correlation between experimental AAA and iNOS.Methods During the operation of the experiment group,the vascular prosthesis of PTFE was implanted to the rabbit abdominal aorta to form an aneurysm,while sham operation was done in the control group.The tissue of ab-dominal aortic aneurysm was harvested in 1 d,7d,14d,and 28d after operation,respectively.The tissue bo-mogenate concentration of iNOS in the abdominal aortic aneurysm were detected by enzyme linked immu-nosorbent assay (ELISA).Results In experimental group,mean concentration of the tissue bomogenate concentration of iNOS in the abdominal aortic aneurysm in 1 d,7 d,14 d,28 d were (22.129 ±2.518)μ/mL,(27.337±5.321) μ/mL,(36.047±4.584)μ/mL,(44.756±1.799)μ/mL,respectively;In control group,that was (12.499±1.807)μ/mL.The concentration of iNOS in experimental group was significantly higher than that of control group (P < 0.01).The difference during the experimental group all had statisti-cal significance (P < 0.05).Conclusion It is possible that iNOS has some biological function during the formation and progression of the abdominal aortic aneurysm.

Abdominal aortic aneurysm is one kind of common disease in clinic. For the disruption and followed high mortality, it has already caused people's deep concern. For the past few years, nitricoxide syn-thase has played an important role in the processes and development of abdominal aortic aneurysm. This arti-cle gave an overview of the subject.

OBJECTIVE:To identify Salvia miltiorrhiza,Rehmannia,Chuangxion rhizome,rhubarb and to determine the content of tanshinone Ⅱ A,as an efficacious composition,in Shendi Tangmaining capsules.METHODS:TLC and SPE-UV were used.The SPE-UV method was performed with silica gel column(1.1cm).The mobile phase consisted of dichloromethane-me_thanol(8∶2).The detected wavelength was 280nm.RESULTS:In the SPE-UV method,the standard curve for tanshinone Ⅱ A was linear in the range of 1.6～8?g/ml(r=0.9 999).The average recovery was 96.13% with RSD=0.80%.CONCLUSION:The method is simple,rapid and reliable for quality control of the capsules.

Objective To evaluate the clinical therapeutic effectiveness of Ilizarov technique for the treatment of congenital brachymetatarsia.Methods We retrospectively analyzed the 5 patients who had been treated in our department for congenital brachymetatarsia (12 metatarsal bones in 10 feet) from January 2008 to January 2011.All of them were female,aged from 22 to 26 years (mean,24.2 years).All cases were bilaterally involved.Three of them suffered from bilateral brachymetatarsia of the first metatarsal bone,one from bilateral brachymetatarsia of the fourth metatarsal bone,and the other one from bilateral brachymetatarsia of the first and fourth metatarsal bones.Bone transport was conducted with a monolateral mini-fixator in 3 patients and with a modified semi-ring Ilizarov fixator in the other 2.Dorsal incision was used for all osteotomy before the external fixator was mounted.Bone transport began 7 days after surgery at a rate of 0.3 mm/d and was completed in 3 times.Results The 5 patients were followed up from 12 to 48 months (mean,22.0 months).The metatarsal bones were lengthened by 13.5 mm(12 to 17 mm) on average.The functions of the toe and ankle joint were normal without skin necrosis,vascular or nerve injury,tylosis of the footplate,or walking pain.The lengthened segments were mineralized well,with an average lengthening index of 48 d/cm(45 to 53 d/cm) and average time of external fixation of 64.8 days.At the last follow-up,the average AOFAS score was 92.2 points (90 to 95 points).Conclusions Although the Ilizarov technique necessitates a patient's prolonged fixation with an external fixator in the treatment of congenital brachymetatarsia,it has advantages of simplicity,minimal invasion,and satisfactory correction of brachymetatarsia.Consequently it is a good treatment for this disease.

Thyroid-stimulating hormone receptor(TSHR)is an important autoantigen whose cleavage and shedding can induce autoimmunity.The TSHR is the main functional receptor of the thyroid.The shedding of the ? subunit plays an important role in the forming of TSAb and balancing between TSAb and TBAb.Research on the cleavage and shedding of the TSHR extracellualar domain helps to gain a deep insight into the structure and function of TSHR,illuminate the pathogenesis of autoimmune thyroid disease and find out a new therapy.The structure of TSHR,the mechanism and the significance of its cleavage and shedding are reviewed in this article.

Objective To explore the effect of the prenatal dexamethasone treatment on the preventionof wet lung syndrome in the newborn of elective caesarean section at term. Methods Two hundred cases of elective caesarean section at term (the gestation age was less than 39 weeks) were divided into observation group and control group,with 100 cases in each by random digits table. Observation group was treated with four intramuscular injections of 6 mg dexamethasone in the 24 hours to 7 days before delivery, and control group was treated with 0.9% sodium chloride injection with the same method. The clinical data and the incidence of the wet lung syndrome of the newborn were collected. Results The incidence of the wet lung syndrome of the newborn was 1%(1/100) in observation group and 9%(9/100) in control group,and the incidence of the severity of the wet lung syndrome of the newborn was 1% ( 1/100) in observation group and 2%(2/100) in control group. There were no complication in observation group and 1 case in control group.The incidence and the severity of the wet lung syndrome of the newborn in observation group were less than that in control group significantly (P = 0.009,0.049). Conclusion Prenatal dexamethasone treatment can reduce the incidence of the wet lung syndrome of the newborn and decrease the incidence of the severity and complication of elective caesarean section at term.

OBJECTIVE:To study the effect of concentrations of alcohol in precipitation method on polysaccharide contents in order to optimize the extractive condition of Xinmaishen oral liquid METHODS:Taking the total polysaccharides in the decoction as target and dertermining the effective components by phenol-vitriol colorimetry,the effects of 4 alcohol concentrations(50%,60%,70%,80%) on polysaccharide contents were studied RESULTS:The results showed that the polysaccharide contents sharply decreased with the increase of alcohol concentration When the alcohol concentration reached 80%,the polysaccharide content lost nearly 70% CONCLUSION:Polysaccharide content should be used as one of exam indices in screening preparation technique of this oral liquid

Objective To assess the effectiveness of different concentration of iodized salt for preventing iodine deficiency disorders. Methods Using the principle and method of systematic review, we searched Cochrane Library(from 1994 to Mar. 2007), Medline(from 1966 to Mar. 2007), BA(from 1969 to Mar. 2007), PubMed(from 1950 to Mar. 2007), OC1D(from 1950 to Mar. 2007), ISI Web of Knowledge(from 1966 to Mar. 2007), Vip (from 1989 to Mar. 2007), Wanfang(from 1997 to Mar. 2007), CBMDisc(from 1978 to Mar. 2007) and CNKI(1994 to Mar. 2007) and hand searched 6 relevant Chinese journals, including Chinese Journal of Preventive Medicine, Chinese Journal of Endemiology, Chinese Journal of Epidemiology, Chinese Journal of Control of Endemic Disease, Endemic Diseases Bulletin and Modern Preventive Medicine. We screened the for eligible studies according to the inclusion and exclusion criteria to be rigorously evealuatecl descriptly and qualitatively. Results Thirteen studies were included, of which, the first six were intervention trials with comparison, including two community intervention trials, which classified all objects into different groups, using iodized salt at different concentration as intervention, four were RCTs with different intervention methods, compare the iodized salt with other intervention measures. Seven were cross-sectional studies, which analyzed the iodine nutrition of people after the concentration of iodized salt was lowered down. Because of different interventions in control groups and different outcome measures, it was difficult to perform recta-analysis, a descriptive analysis of the results was presented. Most studies showed that urinary iodine level decreased as the concentration of iodized salt went down gradually. When the concentration of iodized salt went down to the best level recommended, goiter rate decreased obviously. Conclusions Iodized salt was considered as the hest method of iodine supply to prevent iodine deficiency disorders. But effectiveness of preventing iodine deficiency disorders with various concentration of iodized salt is different. To lower the concentration of iodized salt properly can not only prevent iodine deficiency disorders but also reduce the side effect of excess iodine intake to the minimum. And it can also save a lot of iodine resource. Well-designed community-based intervention trials with large sample size are needed to confirm the effect of different concentration of iodized salt on preventing iodine deficiency disorder.

Objective:In 2003,a survey of the manpower of pediatric dentists was made in China in order to provide basis for database. Methods:Questionnaires were distributed to dentists presenced the 5th conference of pediatric dentistry in China,and 139 available answers were analysis. Results:In those 139 pediatric dentists, with a mean age of 38.2?8.7,females were significantly more than males, and 89.9% dentists had bachelor, master or doctor degree. Significant relations were found between self-estimate ability of dentists and their length of work, degree, character of clinic.Conclusion:To date, the team of pediatric dentists begins to take shape, the structure of age and education are rational, but the number of them is insufficient and it is necessary to improve the basic and continuing education.

Objective To explore the effects of oxidative stress in porcine iliac endothelial cells(PIECs) induced by high glucose. Methods After being intervened by high glucose for some time, dihydroethidium (DHE) or dihydrorhodamine 123 (DHR123) was used as a reactive oxygen species(ROS) capture. The mean fluorescent intensity(MFI) of above probes which were the products of intracellular oxidation was detected by fluorescent microscopy and flow cytometry, and the level of ROS was thus measured. With lucigenin as chemiluminescence agent, luminescence changes were detected by chemiluminescence analyzer after addition of NADPH to observe the effect of high glucose on activity of NADPH oxidase(NOX). Results Intracellular MFI was markedly elevated with the concentration of high glucose and time of exposure to high glucose. It was revealed by flow cytometry that the NOX activity was significantly activated compared with normal medium treated PIECs(P