Objective:Multiple myeloma(MM)is a hematologically malignant clonal plasma cell disease.This study aims to explore the association between immunophenotypes and prognosis in patients with MM,to determine whether the ex...Objective:Multiple myeloma(MM)is a hematologically malignant clonal plasma cell disease.This study aims to explore the association between immunophenotypes and prognosis in patients with MM,to determine whether the expression of CD45 and CD200 is related to the prognosis of newly diagnosed MM(NDMM)patients,and to evaluate the significance of the combined expression of CD45 and CD200 in NDMM.Methods:A total of 123 NDMM patients admitted to Shengjing Hospital of China Medical University from July 2015 to August 2019 were enrolled.Five key immunophenotypic markers(including CD38,CD138,CD45,CD56,and CD200)were screened through flow cytometry and identified using random forest analysis and univariate Cox regression analysis.Patients were divided into 3 groups:Group A,CD45 and CD200 double-positive;Group B,CD45 or CD200 single-positive;Group C,CD45 and CD200 double-negative.Kaplan-Meier curves were used to analyze overall survival(OS)and progression-free survival(PFS)across groups.Multivariate Cox regression was performed to evaluate prognostic factors,and a nomogram was constructed based on these results.Results:The OS and PFS of single-positive groups for CD38,CD138,CD45,CD56,and CD200 were all shorter than those of their respective single-negative groups(all P<0.05).Significant differences were observed in OS(P<0.001)and PFS(P=0.001)among Groups A,B,and C.Group A had shorter OS and PFS(all P=0.001)compared to the Group B+C(cases from Group B and Group C were combined).CD45 and CD200 double-positive was an independent prognostic factor for NDMM[hazard ratio(HR)=2.178,95%confidence interval(CI)1.048 to 4.529;P=0.037].The nomogram and calibration curves constructed from multivariate Cox regression analysis demonstrated good concordance(concordance index=0.706;95%CI 0.661 to 0.751).Conclusion:NDMM patients with double-positive expression of CD45 and CD200 have significantly shorter OS and PFS.Compared with the use of either marker alone,the combined assessment of CD45 and CD200 may provide better prognostic stratification for MM patients.展开更多
目的探讨脑卒中相关肺炎(SAP)外周血CD200/CD200R1通路及CD147表达对病情评估及患者预后的价值.方法选择2017年12月-2019年12月南方医科大学珠江医院急诊科收治的脑卒中急性缺血性脑卒中患者140例作为研究对象,根据其住院期间是否发生...目的探讨脑卒中相关肺炎(SAP)外周血CD200/CD200R1通路及CD147表达对病情评估及患者预后的价值.方法选择2017年12月-2019年12月南方医科大学珠江医院急诊科收治的脑卒中急性缺血性脑卒中患者140例作为研究对象,根据其住院期间是否发生肺部感染分为SAP组(n=55)及非SAP组(n=85),选择同期急诊科收治的因外伤、车祸等入院的患者60例作为对照组.S A P组根据格拉斯哥评分及肺部感染评分进一步分为轻度、中度、重度昏迷组及轻度、中度、重度感染组.采用流式细胞术检测所有患者外周血中CD200、CD200R1水平,采用酶联免疫吸附法检测血清CD147水平.结果SAP组CD200、CD200R1水平低于非SAP组及对照组,CD147高于非SAP组及对照组(P<0.05);非SAP组CD200、CD200R1水平低于对照组,CD147高于对照组;随昏迷程度增加,CD200、CD200R1水平逐渐降低,CD147水平逐渐升高,比较差异具有统计学意义(P<0.05);随感染程度的增加,CD200、CD200R1水平逐渐降低,CD147水平逐渐升高,比较差异具有统计学意义(P<0.05).结论随着脑卒中相关肺炎病情的加重,外周血中CD200、CD200R1水平不断降低,CD147水平不断增加,三指标对于患者预后具有一定的预测价值.展开更多
目的观察CD200在重症中暑大鼠中的表达与变化规律,及其与炎症因子分泌的关系,初步探讨CD200参与重症中暑炎症反应的机制。方法将雄性Wistar大鼠32只,随机分为对照组(n=8)、重症中暑组(HS,n=24)。重症中暑组置于人工气候舱内,温度(40...目的观察CD200在重症中暑大鼠中的表达与变化规律,及其与炎症因子分泌的关系,初步探讨CD200参与重症中暑炎症反应的机制。方法将雄性Wistar大鼠32只,随机分为对照组(n=8)、重症中暑组(HS,n=24)。重症中暑组置于人工气候舱内,温度(40±2)℃,湿度(65±5)%,热打击制备经典中暑模型,对照组置于(22.0±1)℃室温下。分别于造模后0、6、12 h时点采血并处死大鼠,抽血用酶联免疫法检测血清高迁移率族蛋白B1(HMGB1)、肿瘤坏死因子α(TNF-α)和白介素6(IL-6)浓度,采用RT-PCR法检测肺组织CD200 m RNA表达。结果重症中暑组各时点CD200m RNA表达均低于对照组(P<0.05),热打击后CD200 m RNA表达逐渐降低,且呈时间依赖性递减(P<0.05);重症中暑组血清中HMGB1、TNF-α、IL-6均明显高于对照组(P<0.05);热打击后HMGB1、TNF-α、IL-6分泌逐渐上调,且呈时间依赖性升高(P<0.05);CD200 m RNA表达降低与HMGB1(r=-0.635,P<0.05),TNF-α(r=-0.701,P<0.05),IL-6(r=-0.786,P<0.05)浓度升高呈显著负相关性。结论重症中暑时,CD200表达减少并随着时间进一步降低,促炎细胞因子HMGB1、TNF-α和IL-6分泌增多并随时间逐渐升高,CD200表达减少与HMGB1、TNF-α和IL-6分泌增多呈负相关。CD200的表达异常可能是重症中暑炎症反应的分子机制之一。展开更多
基金National Natural Science Foundation of China(No.32171158,31971094)Beijing Natural Science Foundation(No.7222005)Scientific Research Common Program of Beijing Municipal Commission of Education(No.KM202010025032)。
基金supported by the National Natural Science Foundation,China(81870166).
文摘Objective:Multiple myeloma(MM)is a hematologically malignant clonal plasma cell disease.This study aims to explore the association between immunophenotypes and prognosis in patients with MM,to determine whether the expression of CD45 and CD200 is related to the prognosis of newly diagnosed MM(NDMM)patients,and to evaluate the significance of the combined expression of CD45 and CD200 in NDMM.Methods:A total of 123 NDMM patients admitted to Shengjing Hospital of China Medical University from July 2015 to August 2019 were enrolled.Five key immunophenotypic markers(including CD38,CD138,CD45,CD56,and CD200)were screened through flow cytometry and identified using random forest analysis and univariate Cox regression analysis.Patients were divided into 3 groups:Group A,CD45 and CD200 double-positive;Group B,CD45 or CD200 single-positive;Group C,CD45 and CD200 double-negative.Kaplan-Meier curves were used to analyze overall survival(OS)and progression-free survival(PFS)across groups.Multivariate Cox regression was performed to evaluate prognostic factors,and a nomogram was constructed based on these results.Results:The OS and PFS of single-positive groups for CD38,CD138,CD45,CD56,and CD200 were all shorter than those of their respective single-negative groups(all P<0.05).Significant differences were observed in OS(P<0.001)and PFS(P=0.001)among Groups A,B,and C.Group A had shorter OS and PFS(all P=0.001)compared to the Group B+C(cases from Group B and Group C were combined).CD45 and CD200 double-positive was an independent prognostic factor for NDMM[hazard ratio(HR)=2.178,95%confidence interval(CI)1.048 to 4.529;P=0.037].The nomogram and calibration curves constructed from multivariate Cox regression analysis demonstrated good concordance(concordance index=0.706;95%CI 0.661 to 0.751).Conclusion:NDMM patients with double-positive expression of CD45 and CD200 have significantly shorter OS and PFS.Compared with the use of either marker alone,the combined assessment of CD45 and CD200 may provide better prognostic stratification for MM patients.
文摘目的探讨脑卒中相关肺炎(SAP)外周血CD200/CD200R1通路及CD147表达对病情评估及患者预后的价值.方法选择2017年12月-2019年12月南方医科大学珠江医院急诊科收治的脑卒中急性缺血性脑卒中患者140例作为研究对象,根据其住院期间是否发生肺部感染分为SAP组(n=55)及非SAP组(n=85),选择同期急诊科收治的因外伤、车祸等入院的患者60例作为对照组.S A P组根据格拉斯哥评分及肺部感染评分进一步分为轻度、中度、重度昏迷组及轻度、中度、重度感染组.采用流式细胞术检测所有患者外周血中CD200、CD200R1水平,采用酶联免疫吸附法检测血清CD147水平.结果SAP组CD200、CD200R1水平低于非SAP组及对照组,CD147高于非SAP组及对照组(P<0.05);非SAP组CD200、CD200R1水平低于对照组,CD147高于对照组;随昏迷程度增加,CD200、CD200R1水平逐渐降低,CD147水平逐渐升高,比较差异具有统计学意义(P<0.05);随感染程度的增加,CD200、CD200R1水平逐渐降低,CD147水平逐渐升高,比较差异具有统计学意义(P<0.05).结论随着脑卒中相关肺炎病情的加重,外周血中CD200、CD200R1水平不断降低,CD147水平不断增加,三指标对于患者预后具有一定的预测价值.
文摘目的观察CD200在重症中暑大鼠中的表达与变化规律,及其与炎症因子分泌的关系,初步探讨CD200参与重症中暑炎症反应的机制。方法将雄性Wistar大鼠32只,随机分为对照组(n=8)、重症中暑组(HS,n=24)。重症中暑组置于人工气候舱内,温度(40±2)℃,湿度(65±5)%,热打击制备经典中暑模型,对照组置于(22.0±1)℃室温下。分别于造模后0、6、12 h时点采血并处死大鼠,抽血用酶联免疫法检测血清高迁移率族蛋白B1(HMGB1)、肿瘤坏死因子α(TNF-α)和白介素6(IL-6)浓度,采用RT-PCR法检测肺组织CD200 m RNA表达。结果重症中暑组各时点CD200m RNA表达均低于对照组(P<0.05),热打击后CD200 m RNA表达逐渐降低,且呈时间依赖性递减(P<0.05);重症中暑组血清中HMGB1、TNF-α、IL-6均明显高于对照组(P<0.05);热打击后HMGB1、TNF-α、IL-6分泌逐渐上调,且呈时间依赖性升高(P<0.05);CD200 m RNA表达降低与HMGB1(r=-0.635,P<0.05),TNF-α(r=-0.701,P<0.05),IL-6(r=-0.786,P<0.05)浓度升高呈显著负相关性。结论重症中暑时,CD200表达减少并随着时间进一步降低,促炎细胞因子HMGB1、TNF-α和IL-6分泌增多并随时间逐渐升高,CD200表达减少与HMGB1、TNF-α和IL-6分泌增多呈负相关。CD200的表达异常可能是重症中暑炎症反应的分子机制之一。
