简介：

简介：AcomputerscientistatWashingtonUniversityinSt.Louishasdevelopedawaytocoaxcellstodonaturalthingsunderunnaturalcircumstances,whichcouldbeusefulforstemcellresearch,genetherapyandbiofuelproduction.MichaelBrent,theHenryEdwinSeverProfessorofEngineeringintheSchoolofEngineering&

简介：Directexposuretointensivevisiblelightcanleadtosolarretinopathy,includingmacularinjury.Thesignsandsymptomsincludecentralscotoma,metamorphopsia,anddecreasedvision.However,therehavebeenfewstudiesexaminingretinalinjuryduetointensivelightstimulationatthecellularlevel.Neuralnetworkarrangementsandgeneexpressionpatternsinzebrafishphotoreceptorsaresimilartothoseobservedinhumans,andphotoreceptorinjuryinzebrafishcaninducestemcell-basedcellularregeneration.Therefore,thezebrafishretinaisconsideredausefulmodelforstudyingphotoreceptorinjuryinhumans.Inthecurrentstudy,thecentralretinalphotoreceptorsofzebrafishwereselectivelyablatedbystimulationwithhigh-intensitylight.Retinalinjury,cellproliferationandregenerationofconesandrodswereassessedat1,3and7dayspostlesionwithimmunohistochemistryandinsituhybridization.Additionally,alight/darkboxtestwasusedtoassesszebrafishbehavior.Theresultsrevealedthatphotoreceptorswereregeneratedby7daysafterthelight-inducedinjury.However,theregeneratedcellsshowedadisruptedarrangementatthelesionsite.Duringtheinjury-regenerationprocess,thezebrafishexhibitedreducedlocomotorcapacity,weakenedphototaxisandincreasedmovementangularvelocity.Thesebehaviorsmatchedthemorphologicalchangesofretinalinjuryandregenerationinanumberofways.Thisstudydemonstratesthatthezebrafishretinahasarobustcapacityforregeneration.Visualimpairmentandstressresponsesfollowinghigh-intensitylightstimulationappeartocontributetothealterationofbehaviors.

简介：观察针灸结合行为医学疗法治疗重复使力损伤(RS1)的疗效。选择重复使力损伤(RS1)患者150例，随机分为针灸结合行为医学疗法治疗组90例，针灸对照组60例，对患者治疗前后疼痛程度、功能状态、疗程、愈后复发率进行统计分析及综合疗效评定。针灸结合行为医学疗法治疗组与单纯针灸治疗组在疗程与愈后复发率的差异均有非常显著性意义(P<0．01)。在针灸的基础上结合行为医学疗法治疗，纠正患者不良的行为习惯，对治疗重复使力损伤有很好的疗效。

简介：无

简介：在这研究，数字图象关联(DIC)被采用评估牛的蹄角的机械性质。用特定的过程，张力的标本地区包括了4脚底和5从前面的爪和一头成熟黑安格斯奶牛的后面的蹄被切除。在抽取以后，标本被调节与任何一个0%的相对潮湿内容获得角(干燥)或100%(湿)然后使遭到了到单轴的紧张到失败。所有“干燥”、“湿”的蹄角的平均有弹性的模量(E)是2870瑵漠?潦吗？

简介：INTRODUCTIONPolyhydroxybutyrate(PHB)andit'scopolymerPHBVachievedbythebiosyntheticpathway,hasattractedmuchattentionasanalternationbiodegradablematerials.Theyhavetheexcellentbiocompatibilityandproperdegradationperiodsbyoptimizationofpertinentmolecularweightandcopolymercompositions.

简介：目的：观察刺血法对偏头痛大鼠行为学及脑干组织c—fos、c-jun基因表达的影响。方法：以硝酸甘油造模偏头痛大鼠模型并予以刺血治疗，观察大鼠行学改变，应用免疫组化技术观察脑干组织c-fos及c-jun基因表达的变化。结果：与模型组及空白组比较，治疗组在刺血治疗后耳红、挠头次数显著减少（P〈0．05），c-fos、c-jun表达明显降低（P〈0．01）。结论：刺血治疗可以改善大鼠偏头痛行为学指标，抑制大鼠c—fos及c-jun阳性表达。

简介：AbstractObjective:Awareness regarding the negative effects of ultraviolet radiation are commonly neglected in Asian countries. This study sought to evaluate the ultraviolet radiation knowledge and photoprotective behaviors of university students in Indonesia.Methods:This observational cross-sectional was conducted at Pelita Harapan University, Indonesia.Results:A total of 89 (45.4%) medical students and 107 (54.6%) nonmedical students participated in this study. Their mean age was 21.03 ± 2.03 years, and 46.4% of them had Fitzpatrick type III skin. Medical students as well as older students exhibited a higher level of knowledge regarding photoprotection (P ≤ 0.05). Factors related to good photoprotective behaviors were sex, older age, and average expenditure on skincare. Further analysis revealed that a high level of knowledge regarding photoprotection was related to acceptable photoprotective behaviors (P = 0.01; odds ratio = 1.97; 95% confidence interval = 1.13-3.54).Conclusions:Knowledge regarding sun-related damage and practice of photoprotective behaviors were low among the participants. The results indicate that formal education and academic subjects should incorporate the topic of sun-related damage and promote the practice of photoprotective behaviors early on to increase awareness among populations.

简介：AbstractBackgrounds:Physical activity (PA) and sedentary behavior (SB) have been associated with mortality, while the joint association with mortality is rarely reported among Chinese population. We aimed to examine the independent and joint association of PA and SB with all-cause mortality in southern China.Methods:A cohort of 12,608 China Hypertension Survey participants aged ≥35 years were enrolled in 2013 to 2014, with a followup period of 5.4 years. Baseline self-reported PA and SB were collected via the questionnaire. Kaplan-Meier curves (log-rank test) and Cox proportional hazards regression were performed to evaluate the associations of PA and SB on all-cause mortality.Results:A total of 11,744 eligible participants were included in the analysis. Over an average of 5.4 years of follow-up, 796 deaths occurred. The risk of all-cause mortality was lower among participants with high PA than those with low to moderate level (5.2% vs. 8.9%; hazards ratio [HR]: 0.75, 95% confidence interval [CI]: 0.61-0.87). Participants with SB ≥ 6 h had a higher risk of all-cause mortality than those with SB <6 h (7.8% vs. 6.0%; HR: 1.37, 95% CI: 1.17-1.61). Participants with prolonged SB (≥6 h) and inadequate PA (low to moderate) had a higher risk of all-cause mortality compared to those with SB < 6 h and high PA (11.2% vs. 4.9%; HR: 1.67, 95% CI: 1.35-2.06). Even in the participants with high PA, prolonged SB (≥6 h) was still associated with the higher risk of all-cause mortality compared with SB < 6 h (7.0% vs. 4.9%; HR: 1.33, 95% CI: 1.12-1.56).Conclusions:Among Chinese population, PA and SB have a joint association with the risk of all-cause mortality. Participants with inadequate PA and prolonged SB had the highest risk of all-cause mortality compared with others.

简介：AbstractBackground:A cluster of pneumonia cases were reported by Wuhan Municipal Health Commission, China in December 2019. A novel coronavirus was eventually identified, and became the COVID-19 epidemic that affected public health and life. We investigated the psychological status and behavior changes of the general public in China from January 30 to February 3, 2020.Methods:Respondents were recruited via social media (WeChat) and completed an online questionnaire. We used the State-Trait Anxiety Inventory, Self-rating Depression Scale, and Symptom Checklist-90 to evaluate psychological status. We also investigated respondents’ behavior changes. Quantitative data were analyzed by t-tests or analysis of variance, and classified data were analyzed with chi-square tests.Results:In total, 608 valid questionnaires were obtained. More respondents had state anxiety than trait anxiety (15.8% vs 4.0%). Depression was found among 27.1% of respondents and 7.7% had psychological abnormalities. About 10.1% of respondents suffered from phobia. Our analysis of the relationship between subgroup characteristics and psychological status showed that age, gender, knowledge about COVID-19, degree of worry about epidemiological infection, and confidence about overcoming the outbreak significantly influenced psychological status. Around 93.3% of respondents avoided going to public places and almost all respondents reduced Spring Festival-related activities. At least 70.9% of respondents chose to take three or more preventive measures to avoid infection. The three most commonly used prevention measures were making fewer trips outside and avoiding contact (98.0%), wearing a mask (83.7%), and hand hygiene (82.4%).Conclusions:We need to pay more attention to public psychological stress, especially among young people, as they are likely to experience anxiety, depression, and psychological abnormalities. Different psychological interventions could be formulated according to the psychological characteristics of different gender and age groups. The majority of respondents followed specific behaviors required by the authorities, but it will take time to observe the effects of these behaviors on the epidemic.

简介：BACKGROUND:Duetothelackofautografttransplantrejection,Schwanncells(SCs)canpromotetheproliferationofembryonicstemcellsandtheinductionofdopaminergicneurons.Mesencephalicstemcellscanbeinducedtoproducedopaminergicneurons.Thetherapeuticeffectsofco-graftsofSCsandneuralstemcells(NSCs)deservesfurtherstudyandverificationinParkinsoniananimalmodels.OBJECTIVE:ToinvestigatetheeffectsofSchwanncellsandmesencephalicNSCco-graftsinParkinsoniananimalmodelsonanimalbehaviorandhistology.DESIGN:Randomizedcontrolledexperiment.SETTING:FudanUniversity;InstituteofNeuroscience,ChineseAcademyofSciences.MATERIALS:ThefollowinganimalswereobtainedfromtheExperimentalAnimalCenter,ShanghaiInstituteforBiologicalScience,ChineseAcademyofSciences:5Sprague-Dawleyrats,embryonicday(E)13-16;16neonatalSprague-Dawleyrats,postnatalday1-3;and18adultSDratsofbothgenders.Animalexperimentationmetanimalethicalapproval.METHODS:TheexperimentwasperformedattheDepartmentofAnatomy,HistologyandEmbryology,ShanghaiMedicalCenter,FudanUniversityfromSeptember2005toJanuary2007.ThemesencephalicNSCswereobtainedfromthebrainsofSDratsatE13-16,andSCswereharvestedfromthesciaticnervesofneonatalratsatday1-3.Hemiparkinsonianrats(n=18)wereselectedfortransplantationafterestimatingrotationalbehaviorinresponsetoapomorphineandwererandomlyassignedtothreegroups:controlgroup,NSCgroup,andco-graftgroup.Therewere6ratsineachgroup.Eitherphosphatebufferedsaline(PBS),NSCs,orSCsplusNSCsweretransplantedintotherightneostriatumofParkinsonianrats,respectively.MAINOUTCOMEMEASURES:①Rotationalbehaviorwasinducedbyapomorphine(0.05mg/kg,i.p.)2,4,6,8,and10weeksaftertransplantation,andthenumberofrotationswerecounted.②Differentiationandsurvivalofdopaminergicneuronsintherightneostriatumwerequantifiedbytyrosinehydroxylaseimmu

简介：骨头骨折愈合的起始的煽动性的阶段为愈合的过程的结果代表关键步。然而，开始这个煽动性的阶段的机制和在破裂地点在场的有免疫力的房间的功能糟糕被理解。以便在破裂hematoma以内学习早事件，我们建立了一在里面vitro破裂hematoma模型：我们有教养的hematomas在bioenergetically控制的条件下面在vitro在全部的新潮的关节造形术(THA)期间在腿节的截骨术(人工的骨头破裂)期间形成。这个模型允许我们在跟随破裂的早阶段期间监视有免疫力的房间人口，房间幸存和cytokine表示。而且，这个模型使我们能改变bioenergetical条件以便模仿在里面vivo状况，它被假定被组织缺氧描绘并且限制了营养素的数量。用这个模型，我们发现有免疫力的房间经由angiogenic因素，chemoattractants和支持inflammatory分子的表示适应组织缺氧。另外，联合了氧的限制，滋养的供应与myeloid的比较提高了淋巴细胞的选择幸存导出的房间(即，neutrophils)。笔记，非限制的bioenergetical条件没关于cytokine表示或有免疫力的房间子集的不同幸存率显示出任何类似的效果。在结论，我们发现bioenergetical条件在导致骨折愈合的起始的煽动性的阶段的关键因素之中并且因此是为在早破裂hematoma影响有免疫力的房间的幸存和功能的一个关键步骤。

简介：无

简介：Aim:Toinvestigatetheeffectofhome-basedcardiacrehabilitationonfunctionalcapacity,healthbehavior,andriskfactorsinpatientswithacutecoronarysyndromeinChina.Methods:Eightypatientswithacutecoronarysyndromewereenrolledinthisprospectiverandomizedcontrolledstudy.Patientsinthecardiacrehabilitationgroup(n=52)receivedhome-basedcardiacrehabilitationwithaheartmanualandahomeexercisevideofor3monthsandpatientsinthecontrolgroup(n=28)receivedonlyroutinesecondaryprevention.The6-minwalkdistance,laboratorytestresults,healthybehavior(questionnaire),qualityoflife(12-itemShortFormHealthSurvey),anxiety(7-itemGeneralizedAnxietyDisorderQuestionnaire),anddepression(9-itemPatientHealthQuestionnaire)wereevaluatedatthebeginningandaftertreatmentfor3months.Results:Comparedwithbaselinedata,52patientswhoparticipatedincardiacrehabilitationhadlonger6-minwalkdistance(515.26±113.74mvs0.445.30±97.92m,P<0.0002),higherproportionsof“alwaysexercise”(78.26%vs.28%,P<0.05),“alwayslimitfoodwithsugar”(65.22%vs12%,P<0.05),“alwayseatfruits200–400geveryday”(82.61%vs.4%,P<0.05).and“alwayseatvegetables300–500geveryday”(21.74%vs.12%,P<0.06)aftertreatmentfor3months.Thelow-densitylipoproteincholesterolcontrolrate(52.17%vs.28%,P<0.05)andthesystolicbloodpressurecontrolrate(100%vs.68%,P<0.05)werealsosignificantlyincreasedaftertreatmentfor3monthsinthecardiacrehabilitationgroup.Nosignificantincreasewasfoundinthecontrolgroupaftertreatmentfor3months.Nocardiac-eventrelatedtohomeexercisewasreportedinbothgroups.Conclusion:Home-basedcardiacrehabilitationisafeasibleandavailablecardiacrehabilitationmodeinChina.

简介：