Novel mode-coupling vibrations of AlN thin film bulk acoustic resonator operating with thickness-extensional mode

The dispersion curves of bulk waves propagating in both AlN and ZnO film bulk acoustic resonators(FBARs)are presented to illustrate the mode flip of the thickness-extensional(TE)and 2nd thickness-shear(TSh2)modes.The frequency spectrum quantitative prediction(FSQP)method is used to solve the frequency spectra for predicting the coupling strength among the eigen-modes in AlN and ZnO FBARs.The results elaborate that the flip of the TE and TSh2 branches results in novel self-coupling vibration between the small-wavenumber TE and large-wavenumber TE modes,which has never been observed in the ZnO FBAR.Besides,the mode flip leads to the change in the relative positions of the frequency spectral curves about the TE cut-off frequency.The obtained frequency spectra can be used to predict the mode-coupling behaviors of the vibration modes in the AlN FBAR.The conclusions drawn from the results can help to distinguish the desirable operation modes of the AlN FBAR with very weak coupling strength from all vibration modes.

MiR-106a targets ATG7 to inhibit autophagy and angiogenesis after myocardial infarction

Background:Myocardial infarction(MI)is an acute condition in which the heart mus-cle dies due to the lack of blood supply.Previous research has suggested that au-tophagy and angiogenesis play vital roles in the prevention of heart failure after MI,and miR-106a is considered to be an important regulatory factor in MI.But the specific mechanism remains unknown.In this study,using cultured venous endothelial cells and a rat model of MI,we aimed to identify the potential target genes of miR-106a and discover the mechanisms of inhibiting autophagy and angiogenesis.Methods:We first explored the biological functions of miR-106a on autophagy and angiogenesis on endothelial cells.Then we identified ATG7,which was the down-stream target gene of miR-106a.The expression of miR-106a and ATG7 was investi-gated in the rat model of MI.Results:We found that miR-106a inhibits the proliferation,cell cycle,autophagy and angiogenesis,but promoted the apoptosis of vein endothelial cells.Moreover,ATG7 was identified as the target of miR-106a,and ATG7 rescued the inhibition of autophagy and angiogenesis by miR-106a.The expression of miR-106a in the rat model of MI was decreased but the expression of ATG7 was increased in the infarction areas.Conclusion:Our results indicate that miR-106a may inhibit autophagy and angiogenesis by targeting ATG7.This mechanism may be a potential therapeutic treatment for MI.

IGF1-R抑制剂AEW541对伊马替尼杀伤SUP-B15细胞的增效作用

目的:探讨伊马替尼处理Ph^(+)ALL细胞株SUP-B15时是否出现细胞增殖受抑但不凋亡的耐受状态,探索IGF1-R抑制剂AEW541能否打破这种耐受状态以及相关机制。方法:使用不同浓度伊马替尼或AEW541处理SUP-B15细胞,Deep Blue试剂测定细胞增殖,Annexin V/7-AAD测定细胞凋亡;AEW541和伊马替尼联合处理SUP-B15细胞后流式细胞术测定细胞凋亡率,Western blot测定凋亡相关标志caspase-3和PARP1切割以及ABL下游信号STAT5、ERK1/2和AKT的磷酸化;STAT5和MEK-ERK1/2抑制剂进一步确认伊马替尼联合AEW541诱导SUP-B15细胞凋亡的关键机制。结果:伊马替尼单药处理能有效抑制SUP-B15细胞增殖,但没有显著增加SUP-B15细胞的凋亡率从而出现耐受状态;AEW541单药对SUP-B15细胞增殖与凋亡没有显著影响,但与伊马替尼合用时能显著增加SUP-B15细胞凋亡率及caspase-3和PARP1的切割;AEW541与伊马替尼联合处理SUP-B15较伊马替尼单药STAT5和ERK1/2磷酸化水平更低而对AKT磷酸化水平无明显影响;STAT5抑制剂AC-4-130而非MEK-ERK1/2抑制剂曲美替尼能诱导SUP-B15细胞凋亡。结论:SUP-B15细胞株可对伊马替尼呈现药物耐受,IGF1-R抑制剂AEW541可进一步降低STAT5的活化,继而增强伊马替尼对SUP-B15细胞的凋亡诱导作用,这为打破耐受提供新思路。

敲除ATG5、ATG7基因对RPMI-8226细胞铁死亡敏感性的影响

目的:探讨ATG5、ATG7基因对诱导多发性骨髓瘤细胞系RPMI-8226细胞发生铁死亡的敏感性的影响。方法:用CRISPR/Cas9技术敲除RPMI-8226细胞株中自噬关键基因ATG5和ATG7;Western blot法鉴定基因敲除细胞并检测自噬相关蛋白P62、LC3B的表达变化;流式细胞术检测基因敲除细胞对RSL3敏感性的变化;检测基因敲除细胞内亚铁离子含量和活性氧水平。结果:Western blot检测结果证实RPMI-8226细胞中ATG5、ATG7基因被成功敲除。流式细胞术检测结果显示,RPMI-8226细胞存活率与不同浓度RSL3呈剂量依赖关系(r=-0.969);用10μmol/L的RSL3诱导对照组和基因敲除组细胞发生铁死亡,48 h后基因敲除组细胞存活率显著高于对照组(均P<0.001)。ATG5、ATG7基因敲除后细胞内Fe^(2+)的含量较对照组明显下降(均P<0.01),活性氧水平亦明显下降(均P<0.001)。结论:敲除ATG5、ATG7基因可以抑制多发性骨髓瘤细胞发生铁死亡,LAP途径可能参与其调控。

Effects of Heat Shock Factor AtHsfA1a on Caspase-3 Activity in Arabidopsis thaliana under High Temperature Stress

[ Objective] This study aimed to investigate the effects of heat shock factor AtHsfAla on Caspase-3 activity in Arabidopsis thaliana under high tempera-ture stress, thus revealing the relationship between heat shock factor AtHsfAl a and programmed cell death in A. thaliana. [ Method ] Different genotypes of A. thaliana （AtHsfAla-silenced transgenic and wild-type） seedlings were treated at 42 ℃. According to the fragmentation level of fluorogenic substrate Ac-DEVD- pNA, Caspase-3 activity was determined by spectrophotometry. [ Result] After high temperature treatment, Caspase-3 activity in A. thaliana was enhanced signifi-cantly. Caspase-3 activity in AtHsfAla-si／enced transgenic A. thaliana was higher than that in wild-type A. thaliana, which indicated that AtHsfAla could inhibit Caspase-3 activity in A. thaliana under high temperature stress. [ Conclusion] Under high temperature stress, heat shock factor AtHsfAla might exert inhibitory effects on programmed cell death by reducing Caspase-3 activity. This study provided the basis for clarifying the mechanism of stress resistance in plants.

Nonlinear Micromechanical Modelling of Transverse Tensile Damage Behavior in Fiber-Reinforced Polymer Composites

The investigation focusing on the mechanical behaviors at the microstructural level in composite materials can provide valuable insight into the failure mechanisms at larger scales.A micromechanics damage model which comprises the coupling of the matrix constitutive model and the cohesive zone(CZM)model at fiber-matrix interfaces is presented to evaluate the transverse tensile damage behaviors of unidirectional(UD)fiber-reinforced polymer(FRP)composites.For the polymeric matrix that exhibits highly non-linear mechanical responses,special focus is paid on the formulation of the constitutive model,which characterizes a mixture of elasticity,plasticity as well as damage.The proposed constitutive model includes the numerical implementation of a fracture plane based ellipse-parabola criterion that is an extension of the classic Mohr-Coulomb criterion,corresponding post-yield flow rule and post-failure degradation rule in the fully implicit integration scheme.The numerical results are in good agreement with experimental measurements.It is found that directly using the matrix properties measured at the ply level to characterize the mechanical responses at the constituent level may bring large discrepancies in homogenized stress-strain responses and dominant failure mechanisms.The distribution of fracture plane angles in matrix is predicted,where it is shown to provide novel insight into the microscopic damage initiation and accumulation under transverse tension.

Microarray-based Screening of Target Genes Regulated by Heat Shock Factor AtHsfA1a in Arabidopsis thaliana

[ Objective] This study aimed to screen target genes regulated by heat shock factor AtHsfAla in Arabidopsis thaliana. [ Method] Using AtHsfAla-in- serted mutant athsfala （SALK-068042） and wild-type A. thaliana seedlings as experimental materials, target genes regulated by heat shock factor AtHsfAla were screened by microarray assay. Differentially expressed genes were screened by multiple method. Specific functions of differentially expressed genes were analyzed by gene ontology （GO） analysis. Signal transduction pathways, in which differentia｜ly expressed genes were involved, were analyzed by pathway analysis. Gene-gene interaction network was constructed by Signal-Net. [ Result] A total of 3 672 differentially expressed genes were screened out. Up-regulated differentially expressed genes were involved in 198 functions and 7 signal transduction pathways; down-regulated differentially expressed genes were involved in 94 functions and 10 signal transduction pathways. In the signal transduction network, it was found that cwlNV4 and HXK3 had relatively high ability of mediation; AT1 G14240 and cwlNV4 ex- hibited the most interactions with other genes, which were located in key positions throughout the gene-gene interaction network. [ Conclusion] Heat shock factor AtHsfAla regulates a large number of target genes in A. thaliana.

Effects of Heat Shock Factor AtHsfA1a on Programmed Cell Death in Arabidopsis thaliana under Cold Stress

[Objective] This study aimed to investigate the effects of heat shock factor AtHsfAla on programmed cell death in Arabidopsis thaliana under cold stress. [ Method] AtHsfAla-silenced transgenic （NT） and wild-type （WT） A. thaliana seedlings were used as experimental materials to induce the formation of callus; the callus were cultured to single cells by suspension culture, subjected to cold stress, stained with DAPI, prepared into cell smears and observed under a fluorescence microscope. [ Result] Under cold stress, cell nucleus of wild-type A. thaliana displayed morphological changes, but no apoptotic bodies were found; apoptotic bodies were observed in AtHsfAla-silenced transgenic A. thaliana cells, and the cytoplasm was remarkably concentrated. [ Conclusion] Under cold stress, heat shock factor AtHsfAla exerted inhibitory effects on programmed cell death in A. thaliana, which was of great significance for clarifying the mechanism of stress responses in plants.

皱纹盘鲍在转口期阶段肠道菌群结构演替研究

转口期是皱纹盘鲍(Haliotis discus hannai)早期育苗的重要时期,本研究结合16S rDNA高通量测序和生物信息学技术,分析皱纹盘鲍转口前(T0)、转口后第4天(T4)、第10天(T10)、第35天(T35)和第40天(T40)的肠道菌群结构和多样性。结果显示,皱纹盘鲍T35和T40的肠道菌群多样性低于T0和T4。主成分分析(PCA)显示,T0~T4、T35~T40肠道菌群结构相似度高,T10属于转口期肠道菌群演替变化的过渡阶段。鲍转口期肠道内优势菌门为变形菌门(Proteobacteria)、拟杆菌门(Bacteroidetes)和厚壁菌门(Firmicutes);优势菌属在转口期不同阶段呈现明显的变化,到后期逐渐趋于稳定。Lentilitoribacter是T0和T4的主要优势菌属;到了T10,弓形菌属(Arcobacter)和弧菌属(Vibrio)的相对丰度增加,Lentilitoribacter减少;在转口后期(T35和T40),弧菌属和Formosa则占绝对优势。LEf Se分析共获得59个生物标志物,各个组的生物标志物与其阶段的优势菌群相对应。共发生网络图结果显示,T35阶段的网络关系最为复杂,皱纹盘鲍肠道菌群之间的关系随着转口期的进行发生改变。Tax4Fun功能预测显示,随着转口期的进行,稚鲍肠道菌群所编码的基因多与代谢有关。本研究首次以微生物学的角度揭示了转口期皱纹盘鲍对饵料的适应机制,为皱纹盘鲍的健康养殖奠定了理论基础。

光催化酰基自由基与缺电子1,3-二烯的选择性1,6-加成反应实现羧酸的脱氧烯丙基化

缺电子1,3-二烯类化合物在有机合成和材料科学领域具有重要应用.由于共轭效应的影响,该类化合物的化学转化不同于普通烯烃.一方面,1,3-二烯有多个反应位点,可以合成结构多样化的有机化合物,但另一方面,多反应位点的存在会使其面临1,4-/1,6-区域选择性和Z/E立体选择性的难题.由于电子效应通过共轭π体系的传导差异,使得羰基1,3-二烯的δ位反应活性比β位低,因此1,6-加成反应较难发生.虽然过渡金属催化和有机催化方法的开发在一定程度上解决了1,6-加成选择性的问题,但使用温和的、易得的亲核体实现1,3-二烯的1,6-加成仍是一个难题.近年来,可见光驱动的光氧化还原催化提供了温和的自由基生成条件.一系列自由基前体被应用于不饱和羰基化合物的1,4-加成反应.然而,亲核碳自由基在1,6-加成反应中的应用非常少见,这是因为反应过程中生成的烯丙基自由基中间体容易进一步与二烯反应,发生聚合竞争反应.酰基自由基在有机转化中发挥了重要作用,基于前期本课题组在此方面的工作进展,本文利用可见光与有机膦的协同作用生成酰基自由基,通过酰基自由基对羰基1,3-二烯的1,6-共轭加成反应,实现了芳香羧酸的烯丙基化.经过对膦试剂、碱和反应溶剂等反应条件的筛选和优化,以86%的收率得到目标产物.随后,在此温和条件下对反应适用性进行考察,该反应对各种吸电子和给电子的邻、间、对位取代的芳香羧酸都具有很好的兼容性,各种官能团取代的(杂)芳香羧酸和环烯基甲酸与不同类型的羰基1,3-二烯均能顺利反应,以高达96%的收率高选择性地获得了一系列E构型的不饱和1,6-二羰基化合物.对于环酮缺电子二烯,利用该策略能够高选择性地合成共轭环烯酮.另外,将反应规模扩大至5 mmol时,反应收率几乎不受影响,成功实现了克级制备.自由基捕获实验表明酰基自由基参与了该反应.循环伏安法实验表明三(4-甲氧基苯基)膦能够很容易被失电子的光催化剂氧化,形成三芳基膦阳离子自由基,从而诱导羧酸脱氧.Stern-Volmer猝灭实验验证了激发态的光催化剂与羰基1,3-二烯的单电子转移过程,羰基1,3-二烯被还原为自由基阴离子中间体.酰基自由基能够迅速与其偶联生成阴离子中间体,随后经过质子化和异构化得到目标产物.综上,本文丰富了可见光催化芳香羧酸的脱氧官能团化反应类型,并为羰基1,3-二烯的转化提供了新的策略,为1,6-二羰基化合物的高效合成提供了一种新方法.

思维导图在中医方剂学中的应用

思维导图是起源于欧洲的思维可视化工具,本文主要探讨其在中医方剂学教与学过程中的应用,通过以组成、功用、主治证为核心的个体化组方思路导图的绘制,以辨证体系为核心的多首方剂群体化串联型导图的整合,探究思维导图在中医药学思维模式培养中的重要意义。

复方颠倒凝胶的设计与评价

[目的]制备复方颠倒凝胶并对其理化性质进行初步研究和评价。[方法]采用卡波姆-940制成凝胶基质,以凝胶的胶凝温度和凝胶粘度为考察指标优化和制备复方颠倒凝胶;对其外观、酸碱度及流变学进行评价,并以p H值为7.8的磷酸盐缓冲液(PBS)为释放介质,采用膜透析法考察凝胶的体外释放特性。[结果]处方优化结果为凝胶基质占处方总量的25%,凝胶处方的胶凝温度为33℃。复方颠倒凝胶外观为金黄色透明半固体状,p H值为7,黏度为7533 m Pa/s;复方颠倒凝胶在12 h内释放率达到90.38%,符合Ritger-Peppas方程,表明凝胶具有良好的缓释作用。[结论]复方颠倒凝胶制备工艺稳定,其外观、酸碱度、流变学和体外释放性能等理化性质均符合体外应用要求,具有良好的发展前景。

基于数据挖掘的肾结石中医用药规律分析

目的:基于数据挖掘方法分析文献中治疗肾结石的中医用药规律,为临床遣方用药和创制新方提供参考。方法:收集、整理近10年文献中中医药治疗肾结石的处方,录入中医传承辅助系统软件(V2.5),采用改进的互信息法和复杂系统熵聚类法等数据挖掘方法,对治疗肾结石的处方进行组方规律分析。结果:对筛选出的76首治疗肾结石处方进行分析,使用频次均在15次以上有19味,其关联系数均在0.04以上的常用药对10个,获得4个核心组合,2个新处方。结论:高频药物的配伍体现了中医治疗肾结石多采用清热利湿、化石排石、利尿通淋、补益肾气兼以活血化瘀的治疗原则。

Effects of an attached functionally graded layer on the electromechanical behaviors of piezoelectric semiconductor fibers

In this paper,we propose a specific two-layer model consisting of a functionally graded(FG)layer and a piezoelectric semiconductor(PS)layer.Based on the macroscopic theory of PS materials,the effects brought about by the attached FG layer on the piezotronic behaviors of homogeneous n-type PS fibers and PN junctions are investigated.The semi-analytical solutions of the electromechanical fields are obtained by expanding the displacement and carrier concentration variation into power series.Results show that the antisymmetry of the potential and electron concentration distributions in homogeneous n-type PS fibers is destroyed due to the material inhomogeneity of the attached FG layer.In addition,by creating jump discontinuities in the material properties of the FG layer,potential barriers/wells can be produced in the middle of the fiber.Similarly,the potential barrier configuration near the interface of a homogeneous PS PN junction can also be manipulated in this way,which offers a new choice for the design of PN junction based devices.

共享经济中消费者权益法律保护相关问题的分析

共享经济是衍生于互联网环境下的新经济模式,拥有新的交易运行模式,可扩大闲置资源利用率。共享经济的发展让消费者的很多权益保护与法律规定产生了存在冲突。本文先对共享经济中的消费者权益法律保护必要性进行解析,然后对权益保护存在的不足进行分析,并对共享经济中消费者法律权益保护提出合理化建议,为创建法治化的共享经济消费者权益法律保护环境提供可行思路。

The Multi-field Coupled Vibration Analysis of AT-Cut Quartz Crystal Resonators with Parallelism Error

During the fabrication of quartz crystal resonators(QCRs),parallelism error is inevitably generated,which is rarely investigated.In order to reveal the influence of parallelism error on the working performance of QCRs,the coupled vibration of a non-parallel AT-cut quartz crystal plate with electrodes is systematically studied from the views of theoretical analysis and numerical simulations.The two-dimensional thermal incremental field equations are solved for the free vibration analysis via the coefficient-formed partial differential equation module of the COMSOL Multiphysics software,from which the frequency spectra,frequency–temperature curves,and mode shapes are discussed in detail.Additionally,the piezoelectric module is utilized to obtain the admittance response under different conditions.It is demonstrated that the parallelism error reduces the resonant frequency.Additionally,symmetry broken by the non-parallelism increases the probability of activity dip and is harmful to QCR’s thermal stability.However,if the top and bottom surfaces incline synchronously in the same direction,the influence of parallelism error is tiny.The conclusions achieved are helpful for the QCR design,and the methodology presented can also be applied to other wave devices.

Research on the Multimedia Information Retrieval Algorithm based on Information Restructuring and Image Reconstruction

In this paper, we conduct research on the multimedia information retrieval algorithm based on the information restructuring and image reconstruction. With the massive growth of information resources, people through various retrieval tools for too much information, led directly to information overload. In vector space model and probability retrieval model based on information retrieval tools rarely consider the user＇ s personalized information needs and features, has resulted in a large amount of information retrieval result and correlation information the user＇ s information demand is not big. In order to improve the existing retrieval system, in recent years, scholars to study looked that context information retrieval context factors need to be considered, such as the retrieval time, place and the interactive history, mission, environment and other factors stated or implied in the retrieval process. At present, the context research has become the information behavior, information search process and the research hotspot in the field of information retrieval interaction.

The F-box protein SHORT PRIMARY ROOT modulates primary root meristem activity by targeting SEUSS-LIKE protein for degradation in rice

Root meristem activity is essential for root morphogenesis and adaptation,but the molecular mechanism regulating root meristem activity is not fully understood.Here,we identify an F-box family E3 ubiquitin ligase named SHORT PRIMARY ROOT(SHPR) that regulates primary root(PR)meristem activity and cell proliferation in rice.SHPR loss-of-function mutations impair PR elongation in rice.SHPR is involved in the formation of an SCF complex with the Oryza sativa SKP1-like protein OSK1/20.We show that SHPR interacts with Oryza sativa SEUSS-LIKE(OsSLK) in the nucleus and is required for OsSLK polyubiquitination and degradation by the ubiquitin 26S-proteasome system(UPS).Transgenic plants overexpressing OsSLK display a shorter PR phenotype,which is similar to the SHPR loss-of-function mutants.Genetic analysis suggests that SHPR promotes PR elongation in an OsSLK-dependent manner.Collectively,our study establishes SHPR as an E3 ubiquitin ligase that targets OsSLK for degradation,and uncovers a protein ubiquitination pathway as a mechanism for modulating root meristem activity in rice.

自体造血干细胞移植对CAR-T治疗复发/难治性多发性骨髓瘤疗效的影响

目的评价自体造血干细胞移植(ASCT)对抗原嵌合受体-T细胞(CAR-T)治疗复发/难治性多发性骨髓瘤(RRMM)疗效的影响。方法回顾性队列研究。收集2020年1月3日至2022年9月13日于徐州医科大学附属医院血液科接受CAR-T治疗的168例RRMM患者的临床资料,依据既往是否接受ASCT分为移植组(47例)与未移植组(121例),采用χ^(2)检验、Kaplan-Meier生存分析及独立样本t检验等方法统计分析两组患者客观缓解率(ORR)、无进展生存(PFS)时间、总生存(OS)时间,以及两组患者CAR-T输注前CD3、CD4、CD8、CD19、CD56、自然杀伤(NK)细胞水平。结果168例RRMM患者中,男性98例(58.3%),发病中位年龄57岁(范围30~70岁)。两组患者输注CAR-T细胞后,未移植组ORR为89.3%(92/103),移植组ORR为72.9%(27/37);1年后再次评估疗效,未移植ORR为78.1%(75/96),移植组ORR为59.4%(19/32),未移植组ORR均优于移植组ORR(χ^(2)=5.71、4.32,P=0.017、0.038)。未移植组患者中位OS及PFS时间均大于移植组患者(OS:30个月比20个月,PFS:26个月比12个月;均P<0.05)。移植组患者CAR-T输注前的CD4水平显著低于未移植组患者(25.65±13.56比32.64±17.21;t=-2.15,P=0.034),CD3、CD8、CD19、CD56及NK细胞计数两组间差异均无统计学意义(均P>0.05)。结论在接受CAR-T治疗的RRMM患者中,未行ASCT患者的疗效明显好于既往行ASCT患者,可能与接受CAR-T治疗前CD4水平有关。

复发难治多发性骨髓瘤患者接受CAR-T治疗后细胞因子释放综合征发生情况及对预后的影响

目的探讨复发难治多发性骨髓瘤(RRMM)患者接受嵌合抗原受体T细胞(CAR-T)治疗后细胞因子释放综合征(CRS)发生情况及对预后的影响。方法回顾性收集2020年1月至2022年10月徐州医科大学附属医院接受CAR-T治疗的91例RRMM患者的临床资料。患者在输注CAR-T前采用氟达拉滨+环磷酰胺(FC)方案预处理,在第0天回输1×10^(6)/kg CAR-T。记录患者治疗后CRS发生情况,并进行分级,1~2级为轻度CRS,≥3级为重度CRS。随访截止日期为2023年2月14日,随访时间M(Q_(1),Q_(3))为14.1(3.1,37.7)个月。采用Kaplan-Meier生存曲线分析1级及2级CRS患者的无进展生存期(PFS)及总生存期(OS),采用单因素logistic回归分析发生重度CRS的相关因素。结果91例RRMM患者中,男51例,女40例,年龄[M(Q_(1),Q_(3))]为57(31,73)岁。91例(100%)患者发生CRS,其中轻度(1~2级)CRS为82例(90%),重度(3~5级)CRS为9例(10%)。9例重度CRS患者中,8例死亡。Kaplan-Meier生存曲线分析显示,1级CRS患者中位PFS及中位OS均未达到;2级CRS患者中位PFS为12(95%CI:4~未达到)个月,中位OS为21(95%CI:4~未达到)个月,2级CRS患者的无进展生存率和总生存率均低于1级CRS患者(均P<0.05)。单因素logistic回归分析显示,肿瘤负荷高(OR=1.025,95%CI:1.002~1.049,P=0.031)、CRS发生时间长(OR=0.809,95%CI:0.646~0.971,P=0.037)与持续时间长(OR=1.758,95%CI:1.349~2.481,P=0.001)是RRMM患者发生重度CRS的相关因素。结论RRMM患者接受CAR-T治疗后CRS发生率高,重度CRS患者死亡率高,2级CRS患者的无进展生存率和总生存率低于1级。患者的肿瘤负荷高、CRS发生时间与持续时间长是RRMM患者发生重度CRS的相关因素。