弱光及干旱条件下AMF对切花月季光合和AsA-GSH循环的影响

旨在探究弱光及干旱条件下丛枝菌根真菌(AMF)对切花月季光合、AsA-GSH循环以及渗透调节物质的影响。盆栽条件下设置100%全光照(L1)、50%全光照(L2)2个光照处理组,80%土壤持水量(W1)和40%土壤持水量(W2)2个水分处理组,接种AMF[变形球囊霉(Glomus versiforme)+异形根孢囊霉(Rhizophagus irregularis)]及不接种对照(CK)共8个处理。结果表明,AMF能够侵染切花月季根系,显著提高切花月季生长品质。弱光和/或干旱胁迫下,与不接种对照相比,接种AMF能有效地促进切花月季叶片的净光合速率(P_(n))、蒸腾速率(T_(r))、气孔导度(G_(s))和水分利用效率(WUE)增加,降低细胞间隙CO_(2)浓度(C_(i));在L2W2处理条件下,与不接种对照相比,接种AMF使切花月季叶片中的抗坏血酸过氧化物酶(APX)、谷胱甘肽还原酶(GR)、单脱氢抗坏血酸还原酶(MDAR)和脱氢抗坏血酸还原酶(DHAR)活性分别提高5.2%、15.4%、21.7%和35.9%;接种AMF的抗坏血酸(AsA)含量与对照处理无显著差异,还原型谷胱甘肽(GSH)含量提高8.1%,GSH/GSSG比值增加7.9%;接种AMF后切花月季丙二醛(MDA)含量显著降低,可溶性糖、可溶性蛋白和脯氨酸(Pro)含量明显增加。结论认为AMF通过维持AsA/DHA和GSH/GSSG的稳定,提高AsA-GSH循环中相关酶活性,增加切花月季叶片可溶性糖、可溶性蛋白和脯氨酸含量而降低MDA含量来适应水分和光照的变化,形成适应光照和水分条件变化的生理生态对策来改善切花月季生长品质。

干旱胁迫下外源褪黑素对王族海棠光合作用、ASA-GSH循环以及激素变化的影响

为探究干旱胁迫下外源褪黑素(MT)对王族海棠(Malus‘Royalty’)生长状况、光合作用、激素代谢以及抗坏血酸-谷胱甘肽(ASA-GSH)循环生理的影响,盆栽条件下设置正常水分(CK)、干旱胁迫(DS)以及干旱胁迫下叶片喷施6个质量分数(50、100、150、200、250、300 mg/kg,分别记为MT1、MT2、MT3、MT4、MT5、MT6)的褪黑素,共8个处理,分析干旱胁迫下不同质量分数褪黑素处理对王族海棠生长量、叶绿素含量、光合参数、激素代谢以及ASA-GSH循环中相关酶活性和抗氧化物质含量的影响。结果表明,与DS处理相比,DS+MT3处理下的株高、基径、总干质量、根系总体积以及根系平均直径分别增加54.7%、20.0%、143.2%、33.5%、6.9%;叶绿素a、叶绿素b以及类胡萝卜素含量分别增加20.5%、115.7%和83.0%;光合参数中净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)以及水分利用效率(WUE)分别增加51.8%、110.9%、55.5%和96.6%,且Pn恢复至CK水平,胞间CO_(2)浓度(Ci)和气孔限制值(Ls)则分别下降43.3%和57.0%;PSⅡ最大光化学量子效率(Fv/Fm)、PSⅡ潜在活性(Fv/Fo)、PSⅡ实际光化学量子效率(ΦPSⅡ)以及PSⅡ有效光化学量子效率(Fv′/Fm′)分别增加5.4%、61.8%、171.6%和168.7%。王族海棠AsA-GSH循环中抗坏血酸过氧化物酶(APX)、脱氢抗坏血酸还原酶(DHAR)、单脱氢抗坏血酸还原酶(MDHAR)以及谷胱甘肽还原酶(GR)活性分别增加168.3%、90.4%、167.2%和126.0%;抗坏血酸(ASA)含量、谷胱甘肽(GSH)含量、抗坏血酸/脱氢抗坏血酸(ASA/DHA)、还原型/氧化型谷胱甘肽(GSH/GSSG)分别增加102.5%、67.5%、129.8%和342.1%;生长素(IAA)、赤霉素(GA)、玉米素核苷(ZR)含量分别增加26.2%、24.6%和89.3%,脱落酸(ABA)含量降低49.0%。干旱胁迫下,王族海棠的生长参数、光合作用以及ASA-GSH循环过程受到抑制,激素平衡遭到破坏。叶片喷施不同质量分数的褪黑素能够调节内源激素的代谢水平,提高光合作用,增强ASA-GSH循环中相关酶活性以及抗氧化物质含量,促进光合色素的合成和积累,改善叶绿素荧光参数,进而提高植物的生物量,增强王族海棠的抗旱能力,其中以叶片喷施150 mg/kg的褪黑素提高王族海棠的抗旱性效果最好。

阳离子自交联苯丙聚合物及其改性ASA乳液的制备与性能研究

本研究选用甲基丙烯酰氧乙基三甲基氯化铵(DMC)、丙烯酰胺(AM)、苯乙烯(St)、丙烯酸丁酯(BA)、N-羟甲基丙烯酰胺(NMA)为共聚单体,经水溶液共聚方式制得阳离子自交联苯丙聚合物,并对其乳化ASA的实验条件进行了探究。结果表明,功能型单体的最佳用量为(相对于共聚单体)DMC 9.5%、NMA 2%,ASA与阳离子自交联苯丙聚合物最佳质量比为4.5∶1,改性后的ASA乳液具有优良的分散性和稳定性;用阳离子淀粉、矾土为双元助留剂,在浆料pH值为6.5,改性ASA乳液用量(相对于阔叶木浆)为0.15%,抄造的纸张施胶度达92 s;与原纸相比,施胶纸张耐折度、撕裂指数、抗张指数、环压指数分别提高41.2%、38.3%、45.6%、58.7%;碳酸钙填料为15%~20%,具有良好的施胶效果,适用于中性施胶。

碱胁迫下内生真菌共生对布顿大麦抗氧化酶和ASA-GSH循环的影响

内生真菌能够提高宿主植物的抗逆性,而碱胁迫使植物体内积累大量的活性氧,加速植物衰老和死亡。为探究碱胁迫下内生真菌对宿主布顿大麦抗氧化酶和抗坏血酸-谷胱甘肽(ASA-GSH)循环系统的影响,本试验以带内生真菌(E+)和不带内生真菌(E-)的布顿大麦为材料,设置0、25、50、100、150、200 mmol/L混合碱(Na_(2)CO_(3)+NaHCO_(3))胁迫处理,研究碱胁迫下内生真菌对布顿大麦过氧化物酶(POD)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)活性及叶片ASA-GSH循环中抗坏血酸过氧化物酶(APX)、谷胱甘肽还原酶(GR)、谷胱甘肽过氧化物酶(GPX)活性和谷胱甘肽(GSH)含量变化的影响。结果表明,在碱胁迫下,抗氧化酶和ASA-GSH循环系统均受内生真菌影响,E+布顿大麦中的POD和GR活性低于E-布顿大麦,而CAT、SOD和APX活性及GSH含量显著高于E-布顿大麦;低浓度碱胁迫下,E+布顿大麦叶片的GPX活性高于E-布顿大麦,但当碱浓度大于100 mmol/L时,则表现为E-高于E+。说明碱胁迫下内生真菌能够提高布顿大麦的抗氧化性,改变ASA-GSH循环,增强植株的抗逆性。本研究结果可为合理利用内生真菌进行布顿大麦抗逆新种质创新和新品种选育提供理论基础。

ASA树脂的制备技术及应用

ASA树脂因其优异的耐候性,需求量日益增大。为了能更好的推进ASA树脂的生产,本文介绍了ASA树脂的制备方法、性能及在户外设备、汽车、建材等领域的应用情况,为ASA树脂生产提供借鉴。

Aspirin suppresses hepatocellular carcinoma progression by inhibiting platelet activity

BACKGROUND Hepatocellular carcinoma(HCC)is the most common malignant liver disease in the world.Platelets(PLTs)are known to play a key role in the maintenance of liver homeostasis and the pathophysiological processes of a variety of liver diseases.Aspirin is the most classic antiplatelet agent.However,the molecular mechanism of platelet action and whether aspirin can affect HCC progression by inhibiting platelet activity need further study.AIM To explore the impact of the antiplatelet effect of aspirin on the development of HCC.METHODS Platelet-rich plasma,platelet plasma,pure platelet,and platelet lysate were prepared,and a coculture model of PLTs and HCC cells was established.CCK-8 analysis,apoptosis analysis,Transwell analysis,and real-time polymerase chain reaction(RT-PCR)were used to analyze the effects of PLTs on the growth,metastasis,and inflammatory microenvironment of HCC.RT-PCR and Western blot were used to detect the effects of platelet activation on tumor-related signaling pathways.Aspirin was used to block the activation and aggregation of PLTs both in vitro and in vivo,and the effect of PLTs on the progression of HCC RESULTS PLTs significantly promoted the growth,invasion,epithelial-mesenchymal transition,and formation of an inflammatory microenvironment in HCC cells.Activated PLTs promoted HCC progression by activating the mitogenactivated protein kinase/protein kinase B/signal transducer and activator of transcription three(MAPK/AKT/STAT3)signaling axis.Additionally,aspirin inhibited HCC progression in vitro and in vivo by inhibiting platelet activation.CONCLUSION PLTs play an important role in the pathogenesis of HCC,and aspirin can affect HCC progression by inhibiting platelet activity.These results suggest that antiplatelet therapy has promising application prospects in the treatment and combined treatment of HCC.

衰弱筛查量表联合ASA分级对老年人关节置换术后并发症的预测

探讨衰弱筛查量表(the FRAIL scale)联合ASA分级(American Society of Anesthesiologists)对老年人关节置换术后并发症的预测作用。方法 收集我院行椎管内麻醉接受关节置换手术的115例年龄>65岁患者的一般资料、麻醉分级,采用衰弱筛查量表评估患者术前衰弱状态,记录并比较患者手术时长、术中出血量、术后在院的时间长短、术后24小时和48小时的疼痛情况以及住院期间并发症的发生情况。通过收集以上数据,采用受试者工作特征曲线(receiver operating characteristic,ROC),比较并评价ASA分级、衰弱筛查量表二者联合应用和两种方式单独应用,对老年患者关节置换术后并发症的预测作用。结果 单独应用ASA分级和衰弱筛查量表预测老年患者关节置换术后并发症的AUC(area under the curve,曲线下面积)分别为0.635和 0.671, ASA分级和衰弱筛查量表联合应用预测老年患者关节置换术后并发症的AUC为0.726,该结果表明对于预测老年患者关节置换术后并发症的能力联合应用ASA分级和衰弱筛查量表优于单独应用ASA分级或单独应用衰弱筛查量表。结论 在术前对需行关节置换的老年患者的评估中,采用衰弱筛查量表联合ASA分级评估比单独应用ASA分级或单独应用衰弱评估对术后并发症的预测更为准确。

Therapeutic effect and psychological impact of aspirin plus edaravone on patients with cerebral infarction

BACKGROUND Cerebral infarction(CI)is characterized by a high prevalence,disability,and mortality.Timely or improper treatment greatly affects patient prognosis.AIM To explore the drug efficacy of aspirin plus edaravone and to explore their effect on quality of life(QOL),anxiety and depression in CI patients.METHODS We retrospectively analyzed the records of 124 CI patients treated between June 2019 and February 2021 who were assigned to an observation group(OG)(combination therapy of aspirin and edaravone,65 patients)or a control group(CG)(aspirin monotherapy,59 patients).The therapeutic effects,pre-and posttreatment National Institutes of Health Stroke Scale(NIHSS)scores,activities of daily living,degree of cognitive impairment,protein levels of glial fibrillary acidic protein(GFAP),neuron-specific enolase(NSE)and S-100B,occurrence of adverse reactions,and serum high-sensitivity C-reactive protein(hs-CRP),interleukin(IL)-6 and tumor necrosis factor(TNF)-αwere evaluated,detected and compared between the two groups.Finally,posttreatment QOL,anxiety,and depression were assessed by the Medical Outcomes Study 36-Item Short Form Health Survey Scale,Self-rating Depression Scale(SDS),and Self-rating Anxiety Scale(SAS),respectively.RESULTS Compared with the CG,the OG had markedly better therapeutic effects,greater improvements in activities of daily living,and better alleviation in cognitive dysfunction after treatment,as well as lower posttreatment NIHSS scores and serum NSE,GFAP,S-100B,hs-CRP,IL-6,and TNF-αlevels;the OG was similar to the CG in terms of adverse reactions but was better than the CG in terms of posttreatment QOL;and the OG also had lower SDS and SAS scores than the CG after treatment.CONCLUSION Aspirin plus edaravone had a good curative effect on CI.It can reverse cranial nerve damage in patients,improve neurological function and prognosis,and alleviate inflammation,anxiety,and depression;thus,it is considered safe and worthy of clinical application.

Application of aspirin and low molecular weight heparin in major orthopedic surgery:Meta analysis of a randomized controlled trial

Objective:The perioperative period of major orthopedic surgery is associated with a high risk of thrombosis,but the best chemopreventive agent for thrombosis prophylaxis is still inconclusive.For this reason,this paper evaluated the efficacy and safety of aspirin versus low-molecular heparin using a Meta-analysis.Methods:Ten randomized controlled studies on the application of aspirin and low-molecular heparin for the prevention of deep vein thrombosis in orthopedic major surgery were retrieved by computer searches of PubMed,CochraneLibrary,WebofScience,China Knowledge Network,Wanfang,and Vipul databases according to inclusion and exclusion criteria,and the literature was managed using Endnote software,and the data were analyzed using Revman 5.3 software was used to perform Meta-analysis of the extracted data,focusing on the effects of these two drugs on pulmonary embolism,deep vein thrombosis,major bleeding events,minor bleeding events,wound complications,mortality and blood loss within 90 days after major orthopedic surgery.Results:(1)Ten randomized controlled trials of high quality were included,with a total of 12,974 patients,7,026 in the aspirin group and 5,948 in the low-molecular heparin group;(2)Meta-analysis showed that aspirin had a higher incidence of pulmonary embolism(OR=1.59,95%CI:1.02 to 2.49,P=0.04)and deep vein thrombosis(OR=1.60,95%CI:1.26 to 2.02,P=0.0001)than low molecular heparin;(3)The incidence of major bleeding events(OR=0.85,95%CI:0.47 to 1.55,P=0.60),minor bleeding events(OR=0.79,95%CI:0.55 to 1.12,P=0.18),adverse wound reactions(OR=0.79,95%CI:0.48 to 1.31,P=0.36),mortality within 90 days(OR=0.69,95%CI:0.20 to 2.31,P=0.55)and perioperative blood loss(MD=0.69,95%CI:0.20 to 2.31,P=0.55)in both drug groups,mortality within 90 days(OR=0.69,95%CI:0.20 to 2.31,P=0.55)and perioperative blood loss(MD=0.69,95%CI:0.20 to 2.31,P=0.55)were not statistically significant.Conclusion:Low-molecular heparin was superior to aspirin in the prevention of pulmonary embolism and lower extremity deep vein thrombosis after major orthopedic surgery,but the safety and adverse drug reactions of both groups were basically similar.Based on this,the authors recommend that low-molecular heparin should be preferred for the prevention of deep vein thrombosis in major orthopaedic surgery;however,the inclusion of randomized controlled trials remains limited,necessitating high-quality,large-sample,long-term follow-up clinical studies.

Distribution of gene polymorphisms associated with aspirin antiplatelet in the Han NSTEMI population

Objective:To analyze the genotype and allele distribution characteristics of GPⅢa PLA2(rs5918),PEAR1(rs12041331),and PTGS1(rs10306114)genes related to the antiplatelet pharmacological effects of aspirin,providing reference for individualized treatment of Chinese Han NSTEMI patients.Methods:A total of 107 Han patients with NSTEMI in Beijing Luhe Hospital affiliated to Capital Medical University from January 2016 to December 2022 were selected as the research subjects.The genotypes of GPⅢa PLA2(rs5918),PEAR1(rs12041331)and PTGS1(rs10306114)were detected by fluorescence staining in situ hybridization.The frequency distribution and allele distribution of genotype were analyzed.The results were analyzed whether there were statistical differences in the distribution of related alleles between the Han NSTEMI population and some populations in the 1000 Genomes database.Results:In the Han NSTEMI population,the genotype frequencies of GPⅢa PLA2(rs5918)locus were TT 97.20%,TC 2.80%and CC 0%,the allele frequencies were T 98.60%and C 1.40%.The genotype frequencies of PEAR1(rs12041331)locus were GG 42.06%,GA 44.86%and AA 13.08%,the allele frequencies were G 64.49%and A 35.51%.The genotypes at the PTGS1(rs10306114)locus were all AA(100%),no AG or GG genotype was found.Conclusion:In the NSTEMI population of Han nationality,the mutation at GPⅢa PLA2(rs5918)site related to aspirin antiplatelet pharmacology is rare,and there is no mutation at PTGS1(rs10306114)site.Wild homozygotes are dominant in these two gene loci,while mutations in PEAR1(rs12041331)are more common.Some of the findings in this study are similar to those in previous reports or other populations included in the relevant database;however,some results differ from previous reports or other populations。

Aspirin interruption before neurosurgical interventions:A controversial problem

Aspirin is widely used for primary or secondary prevention of ischemic events.At the same time,chronic aspirin consumption can affect blood clot formation during surgical intervention and increase intraoperative blood loss.This is especially important for high-risk surgery,including neurosurgery.Current European Society of Cardiology guidelines recommend aspirin interruption for at least 7 d before neurosurgical intervention,but this suggestion is not supported by clinical evidence.This narrative review presents evidence that challenges the necessity for aspirin interruption in neurosurgical patients,describes options for aspirin effect monitoring and the clinical implication of these methods,and summarizes current clinical data on bleeding risk associated with chronic aspirin therapy in neurosurgical patients,including brain tumor surgery,cerebrovascular procedures,and spinal surgery.

高温胁迫下NO信号途径调控辣椒AsA-GSH循环的机制

以“新22号”尖椒为试材,采用高温(38±1)℃胁迫条件下,喷施不同浓度外源NO供体SNP、NO合成酶抑制剂、硝酸还原酶抑制剂和NO清除剂的方法,研究了各处理辣椒幼苗内源NO含量、活性氧(ROS)代谢、AsA-GSH循环系统的关键物质含量、关键酶活性及基因表达的影响,以期揭示高温胁迫下NO信号途径调控辣椒AsA-GSH循环代谢机制。结果表明:高温胁迫可显著提高辣椒内源NO含量,NO清除剂和酶抑制剂可显著降低内源NO含量;添加适当浓度的外源NO可有效提高辣椒叶片抗坏血酸过氧化物酶(APX)、单脱氢抗坏血酸还原酶(MDHAR)、脱氢抗坏血酸还原酶(DHAR)和谷胱甘肽还原酶(GR)的活性,上调辣椒MDHAR、DHAR和GR基因的表达,提高AsA、脱氢抗坏血酸(DHA)、GSH、氧化型谷胱甘肽(GSSG)含量以及AsA/DHA和GSH/GSSG的比值,同时降低O_(2)^(·)产生速率和H_(2)O_(2)含量;添加NO清除剂和合成抑制剂则会逆转上述变化。综上,NO信号途径在辣椒响应高温胁迫的过程中起重要作用,NO信号分子可调控辣椒AsA-GSH循环系统关键基因的表达和翻译后修饰,有效提升关键酶的活性,提高AsA-GSH循环中还原态/氧化态的比例,从而维持体内ROS平衡。补充适量外源NO可有效提升辣椒对高温胁迫的抵抗能力,增强其耐热性。

Statin, aspirin and metformin use and risk of hepatocellular carcinoma related outcomes following liver transplantation: A retrospective study

BACKGROUND Liver transplantation(LT)is a potentially curative therapy for patients with hepatocellular carcinoma(HCC).HCC-recurrence following LT is associated with reduced survival.There is increasing interest in chemoprophylaxis to improve HCC-related outcomes post-LT.AIM To investigate whether there is any benefit for the use of drugs with proposed chemoprophylactic properties against HCC,and patient outcomes following LT.METHODS This was a retrospective study of adult patients who received Deceased Donor LT for HCC from 2005-2022,from a single Australian centre.Drug use was defined as statin,aspirin or metformin therapy for≥29 days,within 24 months post-LT.A cox proportional-hazards model with time-dependent covariates was used for survival analysis.Outcome measures were the composite-endpoint of HCC-recurrence and all-cause mortality,HCC-recurrence and HCC-related mortality.Sensitivity analysis was performed to account for immortality time bias and statin dosing.RESULTS Three hundred and five patients were included in this study,with 253(82.95%)males with a median age of 58.90 years.Aetiologies of liver disease were 150(49.18%)hepatitis C,73(23.93%)hepatitis B(HBV)and 33(10.82%)non-alcoholic fatty liver disease(NAFLD).56(18.36%)took statins,51(16.72%)aspirin and 50(16.39%)metformin.During a median follow-up time of 59.90 months,34(11.15%)developed HCC-recurrence,48(15.74%)died,17(5.57%)from HCC-related mortality.Statin,aspirin or metformin use was not associated with statistically significant differences in the composite endpoint of HCC-recurrence or all-cause mortality[hazard ratio(HR):1.16,95%CI:0.58-2.30;HR:1.21,95%CI:0.28-5.27;HR:0.61,95%CI:0.27-1.36],HCC-recurrence(HR:0.52,95%CI:0.20-1.35;HR:0.51,95%CI:0.14-1.93;HR 1.00,95%CI:0.37-2.72),or HCC-related mortality(HR:0.32,95%CI:0.033-3.09;HR:0.71,95%CI:0.14-3.73;HR:1.57,95%CI:0.61-4.04)respectively.Statin dosing was not associated with statist-ically significant differences in HCC-related outcomes.CONCLUSION Statin,metformin or aspirin use was not associated with improved HCC-related outcomes post-LT,in a largely historical cohort of Australian patients with a low proportion of NAFLD.Further prospective,multicentre studies are required to clarify any potential benefit of these drugs to improve HCC-related outcomes.

硼对菜心镉吸收及抗氧化酶和AsA-GSH循环关键酶活性的调控效应

针对华南地区旱地土壤低硼高镉和蔬菜重金属镉污染日益严重的现状,以广东特色蔬菜菜心(Brassica parachinensis L)为研究对象,通过水培实验研究了外源硼添加对菜心生长特性和镉吸收的调控效应,并从抗氧化酶和AsA-GSH循环关键酶活性的角度探讨硼调控蔬菜镉胁迫的生理机制。研究结果显示,在5μmol/L的镉处理下,20和50μmol/L的外源硼添加显著提高菜心株高和根长达50%以上,同时,50μmol/L的外源硼添加较0.25μmol/L硼添加时的地上部和地下部生物量都明显增加114.19%和187.59%,说明适当施加硼元素供应能有效缓解重金属镉对蔬菜的胁迫作用。另外,10、20、50μmol/L 3种浓度的外源硼添加都不同程度地减少了菜心地上部和地下部的镉吸收,下降量达24.0%。从硼影响菜心的抗氧化酶活性和AsA-GSH循环关键酶活性的结果来看,镉胁迫下添加不同浓度外源硼处理后,不同菜心抗氧化酶和AsA-GSH循环关键酶活性变化规律存在一定差异。本文研究结论为,适宜浓度的硼添加可有效提高镉胁迫下的菜心地上部分和地下部分的SOD、POD、CAT、APX、DHAR、GR活性,增强菜心的抗氧化能力,促进其AsA-GSH循环,从而降低镉对菜心植株的胁迫作用并调控菜心对镉的吸收。这意味着有可能通过筛选适合的硼肥类别和施用量,进一步实现控制蔬菜可食部分镉含量在安全限量范围内,研究结论可为合理施用硼肥保障中轻度镉污染土壤上的蔬菜安全种植提供科学的参考依据。

ASAⅢ级心血管疾病患者口腔种植修复的围手术期风险评估与管理

随着口腔种植技术的普及,如何能够安全的为全身复杂系统疾病患者实施种植手术是当下种植医生不得不面临的挑战。根据患者身体状况,美国麻醉医师协会(American Society of Anesthesiologists,ASA)将围手术期风险进行分级,ASAⅠ~Ⅱ级的患者手术风险极低,ASAⅣ级以上的患者风险极高,不适合手术。对于ASAⅢ级患者,如何评估围手术期风险、实施种植外科手术、降低围手术期严重并发症是越来越多种植医生关注的问题。本文拟从临床最常见合并心血管疾病的ASAⅢ级患者入手,探讨此类患者口腔种植手术的风险评估、防范及并发症防治,为该类患者安全进行种植修复提供参考。

某院医疗器械ADE-ASAS的构建及其对不良事件上报情况的影响

目的探讨某院医疗器械不良事件主动监测与智能评估警示系统(Adverse Drug Event-Active Safety Assessment System,ADE-ASAS)的构建及其对不良事件发生的影响。方法构建医疗器械ADE-ASAS,并选取某院2019—2022年全院上报的不良事件统计情况,数据来自早期手工填报以及医疗器械ADE-ASAS,统计分析系统实施效果及对不良事件发生的影响。结果2019—2022年4年间不良事件上报数逐年增长,医院在2021年上线医疗器械ADE-ASAS,2022年通过医疗器械ADE-ASAS不良事件上报数量较2021年显著增加,差异有统计学意义(P<0.001);2021年医患纠纷、医院投诉数量较2020年下降了14.00%,2022年较2021年下降了15.12%;不良事件报告整体质量评分逐年增高,差异有统计学意义(P<0.001)。结论医疗器械ADE-ASAS的构建提升了医院不良事件的上报数,并使报告整体质量得以提升,有助于相关部门采取有效措施进行干预,以减少医患纠纷和医院投诉,具有一定的临床应用和推广价值。

Analysis of the Therapeutic Effect of Clopidogrel Bisulfate Tablets + Aspirin Enteric-Coated Tablets on Acute Myocardial Infarction

Objective:To investigate and analyze the clinical effect of clopidogrel bisulfate tablets combined with aspirin enteric-coated tablets on acute myocardial infarction(AMI)patients.Methods:The study period was from January 2020 to December 2023,the sample source was 82 AMI patients admitted to our hospital,grouped into an observation group(n=41)and a control group(n=41)by the numerical table method.The patients in the control group were treated with aspirin enteric-coated tablets,and the patients in the observation group were treated with aspirin enteric-coated tablets combined with clopidogrel bisulfate.The clinical efficacy,coagulation indexes,and the incidence of cardiovascular adverse events between the two groups were compared.Results:The clinical efficacy of the observation group was higher than that of the control group(P<0.05);the platelet aggregation rate(PAR)of the observation group was lower than that of the con-trol group after treatment(P<0.05),and there was no significant difference in the prothrombin time(PT)and activated partial thromboplastin time(APTT)between the two groups(P>0.05).The incidence of cardiovascular adverse events in the observation group was lower than that of the control group(P<0.05).Conclusion:The treatment effect of clopidogrel bisulfate tablets combined with aspirin enteric-coated tablets on AMI patients is remarkable.It reduces the PAR and the incidence of cardiovascular adverse events,so this treatment method should be popularized.

Analysis of the Effectiveness of Clopidogrel Combined with Aspirin in the Treatment of Coronary Heart Disease in Community-Dwelling Elderly

Objective:To analyze the combined therapeutic effect of clopidogrel(CLO)and aspirin(ASP)on coronary heart disease(CHD)in community-dwelling elderly.Methods:Thirty elderly patients with CHD who were admitted to the Xinxin Community Health Service Station,Pangzhuang Street,Quanshan District,Xuzhou City,from November 2020 to November 2022 were selected and randomly grouped into an observation group and a control group,with 15 cases in each group.The observation group was given the combination of CLO and ASP and the reference group was given only ASP.The total effective rate and other treatment indicators between the two groups were compared.Results:The total effective rate of the observation group(93.33%)was higher than that of the reference group(60.00%)(P<0.05).The adverse drug reaction rate(13.33%)and long-term cardiovascular adverse event rate(6.67%)of the observation group were lower than those of the reference group at 46.67%and 40.00%respectively,(P<0.05).Before treatment,the two groups had no difference in the quality-of-life scores(P>0.05).After treatment,the quality-of-life scores of the observation group were higher than those of the reference group(P<0.05).Conclusion:CLO combined with ASP improved the therapeutic effect of community-dwelling elderly patients with CHD,reduced adverse reactions during medication,prevented adverse cardiovascular events,and comprehensively improved the patient’s quality of life.

外源AsA对盐胁迫下水稻叶绿体活性氧清除系统的影响

研究了外源AsA对盐胁迫下不同耐盐性水稻品种Pokkali(耐盐 )和Peta(盐敏感 )叶绿体中活性氧清除系统的影响。结果表明 :盐胁迫下 ,外源AsA能提高不同耐盐性水稻品种叶绿体中SOD、APX、GR活性 ,增加叶绿体内AsA和GSH含量 ,减少H2 O2 和MDA含量 ,提高叶绿体中活性氧的清除能力。在盐胁迫或同时加入AsA条件下耐盐品种Pokkali叶绿体中AsA含量均比盐敏感品种Peta高出 4 0 %。说明AsA可以防止盐胁迫下类囊体膜脂的过氧化。

ASA在施胶过程中的化学行为

研究了ASA的施胶过程,并用FTIR漫反射技术分析了施胶纸中ASA的化学行为及其变化。研究结果表明,在本实验条件下,纸样中没有形成ASA与纤维羟基间的酯键;赋予纸页施胶作用的主要是ASA的衍生物;纸页干燥温度对施胶效果影响不大;加入一定量的Al3+可较明显地提高ASA的留着率,提高施胶效果。用放置后的ASA施胶,纸页的施胶效果明显降低,再用Al2(SO4)3浸渍纸页能使纸页的施胶度接近或达到ASA乳化后直接施胶的施胶效果。