Objective A study was performed to better define the teaching outcome of computers in teaching medical imaging. Methods 150 4rd-year students were randomly assigned to four groups and experimental group exposed to 20 radiology cases as well as to a voluntary weekly radiology lecture. Group A used computer-based cases with interactive elements; group B used computer-based cases without interactive elements; group C used paper-based cases with interactive elements; and group D was not exposed to the cases and served as a control group. Results On a multiple-choice question test,groups A,B,and C showed significant improvemen(t+10.6%,+15.7%,+13.5%,respectively),whereas group D did not(+2.7%). On an image interpretation test,group A and group B showed the most improvement (+15.8%,P

OBJECTIVE:To observe the effect of Xuezhikang on serum MCP-1 and endothelial function of brachial artery in patients with chronic heart failure but with normal cholesterol level. METHODS:Patients with chronic heart failure (NYHAⅡ-Ⅳ) were randomly allocated into two groups(n=24 each). Both groups received routine treatment in accordance with the guide of CHF treatment,additionally,the treatment group received Xuezhikang 0.6 g bid for 8 weeks. Serum levels of MCP-1 before and after treatment were measured by ELISA and endothelial function of brachial artery was detected by ultrasonography. RESULTS:In Xuezhikang-treated group compared with the control group,serum level of MCP-1 decreased significantly(P

Fall is one of major causes of disability, reduced mobility, shortness of life span and increased medical costs in the elderly.There are multiple risk factors for falls in the elderly, but they can be preventable and controlled.This article reviews the evidences regarding the clinical effectiveness, practicalness and security of these fall risk assessment methods and measures of interventions by evidence-based medicine in the elderly and analyzes their research directions.

Objective To investigate the prevalence of osteoporosis,osteopenia,fall and brittle fracture and their associated factors in men aged 80 years and over.Methods In a prospective study,184 study subjects with good self-care ability aged 80 years and over were enrolled.The questionnaire included living habits,falls,comorbidities,related symptoms and medicines.The bone mineral density,hand-grip strength,gait speed,timed up and go test(TUG),chair rising test(CRT),bone turnover markers and related hormones were measured.Binary Logistic regression model was used to analyze associated factors for osteoporosis,osteopenia,fall and brittle fracture.Results The prevalence of osteoporosis (OP)and osteopenia(OPA) were 12.5 ％ (23/184) and 45.1％ (83/184) respectively in this study.The height,weight and body mass index were lower,and serum levels of procollagen type 1 N terminal propeptide(P1NP)and C-telopeptides of type 1 collagen(s-CTx)were higher in osteoporosis group than in normal bone mass(NBM) group(P＜0.05,P＜0.01).The estradiol levels were lower in OP and OPA group than in NBM group(P＜ 0.05).The risk factors for OP and OPA included smoking(OR =3.607,P＜0.05),decreased body weight (OR=0.823,P ＜ 0.05) and elevated S-CTx level (OR =12.427,P ＜ 0.01).55.4％ (102/184) of study subjects had fall history after 80-year old.The prevalence of fragile fracture was 17.4％ (4/23),18.1 ％ (15/ 83)and 3.8％(3/78)in OP,OPA and NBM groups respectively,with total prevalence of 12.0％ (22/184).The risk factors for fragile fracture were a decreased total hip BMD(OR 0.017,P＜0.05)and fall history after 80-year-old(OR 13.126,P ＜ 0.05).Conclusions Based on associated factors of osteoporosis,osteopenia,falls and fragile fracture in male aged 80 years and over,the primary and secondary prevention of osteoporosis may need a comprehensive geriatric intervention including lifestyle adjustment,fall prevention and pharmacologic treatments.

ObjectiveTo investigate the expression of CCL2 and its effects on the proliferation and adhesiveness on leukemia cells in patients with acute lymphoblastic leukemia(ALL). MethodsThe bone marrow mesenchymal cells (BMMSC) and bone marrow mononuclear cells (BMMNC) of 30 ALL patients and 30 healthy controls were studied, and CCL2 level was evaluated by ELISA. CCL2 gene mRNA level in ALL was determined by RT-PCR. The cell proliferation and adhesiveness were detected by MTT assays. The cell counts were measured by flow cytometry. ResultsThe BM plasma levels of CCL2 in patients at diagnosis were significantly higher than that in healthy controls [(780.12±129.61) pg/ml vs (120.49±25.21) pg/ml,t =4.96, P =0.00]. Supernatant levels of CCL2 in BMMSC were significantly higher than that of BMMNC [(572.38±35.39) pg/ml vs (193.85±15.45) pg/ml,t =5.37,P =0.00]in vitro.CCL2 cannot induce leukemia proliferation alone,but could induce leukemia proliferation in BMMNC and BMMSC co-culture in a dose- and time-dependent manner.CCL2 could increase the leukemia adhesive to the BMMSC compared with control (r =0.824,P =0.02).ConclusionPatients with B type ALL had higher levels of CCL2 which was secreted by BMMSC. The leukemia could induce the BMMSC to secrete CCL2. CCL2 could promote the survival and proliferation of leukemia in the presence of BMMSC and BMMNC, and enhance ALL cells adhesion toBMMSC in a dose-dependent manner.

Objective To study the interventional effects of Candesartan Cilexetil on vascular endothelial function and expres-sions of ERK/CREB signaling pathway in rats with acute myocardial infarction.Methods 30 rats were randomized into CAN group,AMI group and Sham group.Two weeks after the treatment rats were sacrificed and blood pressure,levels of blood AngⅡ, NO and NOS,endothelial vasomotor effects of isolated thoracic aorta strips,myocardial infarctual area and the expressions of ERK mRNA and CREB mRNA in infarctual myocardium were explored.Results Blood AngⅡ levels were distinctly higher in AMI group when compared with the Sham group,while the NO and NOS level were much lower.accompanied with EDDs decreased seri-ously,and higher mRNA expressions of ERK1 and CREB in infarctual myocardium.All of the above differences were significant. After the treatment of Candesartan Cilexetil,levels of serum NO and activities of NOS were obviously higher and almost reached the similar levels to those in Sham group,additionally endothelium-dependent diastole in isolated aortic strips improved greatly.Mean-while Candesartan Cilexetil can not only increase the plasma AngⅡ,but also decrease the size of myocardial infarction and the mR-NA expressions of ERK1 and CREB in infarctual myocardium significantly.However,blood pressure in all groups was not affected. Conclusion Candesartan Cilexetil can greatly improve the disordered endothelial function developing post-AMI,decrease the size of myocardial infarction and down-regulate the mRNA expressions of ERK and CREB in myocardium of infarctual zone.And all of the above protective effects of Candesartan Cilexetil were independent on blood pressure lowering.

Objective To review the epidemiologic features of norovirus infection outbreaks in Zhejiang province during 2004-2014.Methods Epidemiological data of norovirus infection outbreaks in Zhejiang province from January 2004 to February 2014 were collected from the Emergency Public Reporting System in Zhejiang Provincial CDC.The distribution of time,area,population,route of transmission and genotype of norovirus were analyzed.Results There were 16 outbreaks of norovirus infections with 2 037 cases during 2004-2014 in Zhejiang province.Eleven outbreaks occurred during February and April,and 13 outbreaks occurred in schools.The outbreaks in schools mainly involved students aged 15-20 years,while other outbreaks took place mainly in the young and middle-aged population.The sex ratio of male to female was 1.05 ∶ 1.Among 16 outbreaks,10 were induced by norovirus G Ⅱ infections,3 were induced by norovirus G Ⅰ infections and 3 were induced by norovirus G Ⅰ and G Ⅱ infections.Fourteen outbreaks were caused by water pollution.Conclusion Outbreak of norovirus infection usually occurs in schools during winter and spring in Zhejiang province,and the epidemic of disease is mainly associated with polluted water.

Objective To study the effect of glucocorticoid on serum interleukin(IL)-1,IL-6,transforming growth factor-?_1(TGF-?_1) and tumor necrosis factor alpha(TNF-?) in children with primary nephrotic syndrome(PNS).Methods The levels of cytokines on serum were compared in 3 different patho-type,and IL-1,IL-6,TGF-?_1 and TNF-? in serum were detected using enzyme-linked immunosorbent assay(ELISA) in 25 children with PNS before and after treatment with glucocorticoids.Results Significant difference of IL-1,IL-6,TGF-?_1 and TNF-? were found between the two group before and after the treatment(P0.05).The level of TGF-?_1 in MCD was lo-wer than that in MsPNG,FSGS before and after the treatment(P0.05),and the level of it in FSGS was higher than that in MsPNG after the treatment(P

AIM:To report the safty and efficiency of intravitreal injection of bevacizumab (Avastin) in patients with macular edema (ME) due to branch retinal vein occlusion (BRVO).METHODS: A consecutive series of patients with ME due to BRVO who were treated with intravitreal bevacizumab injection (2.5g/0.1L) were retrospectively studied. Patients underwent complete ophthalmoscopic examination, including Snellen visual acuity testing, optical coherence tomography (OCT) imaging, and/or flurescence angiographic testing at baseline and follow-up visits.RESULTS: There were 32 eyes of 32 consecutive patients who received at least one intravitreal bevacizumab injections (range from 1 to 3). The mean length of follow-up was 4.7 (range from 3 to 8) months. The mean visual acuity improved from 20/200- at baseline to 20/100- at 1 month and 20/100+ at 3 months and last follow-up (P＜0.01). The mean central 1mm macular thickness was 483μm at baseline and decreased to 275, 314,and 301μm at 1 month,3 months, and last follow-up (P＜0.01)respectively.No adverse side effects were observed following injections in any eyes.CONCLUSION: Intravitreal bevacizumab (Avastin) showed a marked decrease in ME secondary to BRVO, improvement in visual acuity and lack of adverse side effects.

AIM To observe the effects of Wuwei Wentong Chubi Capsules (Cinnamomi Ramulus,Poria,Epimedii Folium,etc.) on autophagy proteins of Beclin-1 and LC3-Ⅱ in adjuvant-induced arthritis rats and to explore the possible mechanism of action.METHODS Sixty SD rats were randomized into six groups:normal group,model group,Wuwei Wentong Chubi Capsules (0.8,1.6,3.2 g/kg) groups and tripterygium glycosides (TPT,40 mg/kg) group.In addition to the normal group,adjuvant arthritis (AA) was induced with Freund's complete adjuvant.From the 2th day after injection of FCA,Wuwei Wentong Chubi Capsules with different doses and TPT were given by gavage once a day for 12 days.At the end of the experiment,ankle-joint samples were taken to examine the degree of AA by HE.Beclin-1 and LC3-Ⅱ mRNA were determined by real-time fluorescent quantitative PCR.Meanwhile,the protein expression levels of Beclin-1 and LC3-Ⅱ were determined by immunofluorescence histochemical staining and Western blot.RESULTS As compared with the model group,Wuwei Wentong Chubi Capsules (1.60,3.20 g/kg) not only significantly reduced histopathological injuries,but also effectively up-regulated mRNA and protein expressions of Beclin-1 and LC3-Ⅱ.CONCLUSION Wuwei Wentong Chubi Capsules has a therapeutic action on AA in rats,which might be partly associated with promoting autophagy,decreasing excessive proliferation of synovial cells,leading to the reduction of damage to articular cartilage.