目的探究B细胞刺激因子(BAFF)在特发性炎性肌病(IIM)相关肺间质病变(ILD)中的临床意义。方法纳入122例IIM患者,其中86例并发ILD,按性别、年龄匹配40例正常人作为对照,采用酶联免疫吸附试验检测BAFF,分析其临床意义。结果与non-ILD组相比...目的探究B细胞刺激因子(BAFF)在特发性炎性肌病(IIM)相关肺间质病变(ILD)中的临床意义。方法纳入122例IIM患者,其中86例并发ILD,按性别、年龄匹配40例正常人作为对照,采用酶联免疫吸附试验检测BAFF,分析其临床意义。结果与non-ILD组相比,IIM-ILD组BAFF水平显著升高[2.19(1.07~4.54)ng mL vs.1.14(0.61~2.30)ng mL,P=0.005],是IIM-ILD的独立危险因素。抗MDA5抗体及抗合成酶抗体(ASA)阳性的IIM患者BAFF水平显著高于双阴性患者(P<0.05)。BAFF>3.74 ng mL时,对于诊断IIM-ILD的敏感性为36.0%,特异性为97.2%(AUC=0.681,P=0.002);联合KL-6时,对于诊断IIM-ILD的敏感性为82.6%,特异性为80.6%(AUC=0.868,P<0.001)。BAFF与铁蛋白呈正相关(r=0.368,P<0.001),与KL-6、肺部HRCT评分、肺功能无明显相关性。结论BAFF在IIM-ILD患者中显著升高,可作为IIM人群合并ILD的生物标志物。展开更多
目的探讨高浓度氧通气对全身麻醉手术患者血清涎液化糖链蛋白6(krebs von den lungen 6,KL-6)及细胞因子表达的影响。方法经医院伦理学会批准,选取重庆市巴南区人民医院2018年1月2018年6月行全身麻醉手术者96例,按照随机数字表法分为A组...目的探讨高浓度氧通气对全身麻醉手术患者血清涎液化糖链蛋白6(krebs von den lungen 6,KL-6)及细胞因子表达的影响。方法经医院伦理学会批准,选取重庆市巴南区人民医院2018年1月2018年6月行全身麻醉手术者96例,按照随机数字表法分为A组(100%氧吸入)和B组(60%氧吸入),每组48例。分别于全身麻醉前30 min(T0)、全身麻醉后60 min(T1)、全身麻醉后120 min(T2)、全身麻醉后180 min(T3)、机械通气结束后60 min(T4)抽取桡动脉血行动脉血气分析。并于T0、T1、T2.T3及T4时间点抽取中心静脉血,检测血清KL-6、肿瘤坏死因子-a(TNF-x)、白细胞介素-8(IL-8)水平。结果两组患者全身麻醉前血清KL-6.TNF-α、IL-8组间比较差异无统计学意义(P>0.05)。全身麻醉后血清KL-6、TNF-α、IL-8均逐渐上升,其中A组T1血清KL-6、TNF-α、IL-8即显著高于T0[KL-6(U/mL):173.22±31.19比101.13±22.31;TNF-a(pg/mL):5.99±2.81比3.24±1.98;IL-8(pg/mL):128.11±32.21比98.22±19.77,均P<0.05]。B组T1血清KL-6高于T0[KL-6(U/mL):121.64±33.55比99.29±24.93]。T2血清TNF-α、IL-8高于TO0[TNF-a(pg/mL):4.41±2.71比3.24±1.98;IL-8(pg/mL):123.21±31.47比98.22±19.77,均P<0.05]。A组T1-T4血清KL-6、TNF-α.IL-8分别为[KL-6:(173.22±31.19)(189.38±39.11)(236.16±49.37)(210.04±38.66)U/mL;TNF-a(5.99±2.81)(6.21±2.56)(6.92±3.01)(6.31±2.88)pg/mL;IL-8:(128.11±32.21)(155.17±42.19)(188.28±40.33)(171.15±43.11)pg/mL],均高于同时点B组[KL-6:(121.64±33.55>/(141.33±36.74)(168.04±42.55)(166.39±44.63)U/mL;TNF-α(3.31±2.11)(4.41±2.71)(4.50±3.12)(4.39±2.41)pg/mL;IL-8:(103.12±23.3(123.21±31.47)(135.194.33)(137.339.22)pg/mL],差异均有统计学意义(均P<0.05)。结论全身麻醉术中高浓度氧气吸入可引起患者血清细胞因子及KL-6表达增多。展开更多
Based on the optical engine,the ignition characteristics,combustion process and soot emission characteristics of diesel under different 2-Methylfuran(MF) atmospheres were investigated by high-speed photography and in-...Based on the optical engine,the ignition characteristics,combustion process and soot emission characteristics of diesel under different 2-Methylfuran(MF) atmospheres were investigated by high-speed photography and in-cylinder combustion analysis technology.The results show that at the same main injection timing,the ignition time of reactivity controlled compression ignition(RCCI) combustion mode is earlier than pure diesel combustion,and the ignition point is concentrated near the nozzle.Diesel acts as a spark plug to ignite the mixture,but the flame develops slowly in the early stages and the pressure in the cylinder rises slowly.Compared with pure diesel,RCCI combustion model has smaller peak values of in-cylinder pressure and heat release rate,shorter ignition delay period,earlier combustion phase and shorter combustion duration.At main spray time at 6℃A BTDC and 12℃A BTDC,with the increase of MF premixing ratio from 0 to 0.75,the peak cylinder pressure decreased by 19.6% and 26% respectively.In addition,with the increase of the MF heat value ratio,the area of KL factor> 1.5 in the combustion chamber decreased and the space integral natural luminescence(SINL) peak value decreased by 48.37%,and the soot formation rate and yield decreased significantly.However,when the MF heat value ratio was too large(75% of the total calorific value),the ignition delay period increased,and misfire occurred at the main injection timing of 0℃A BTDC.The RCCI mode of MF/diesel dual fuel has better stability,and better control effect can be obtained at different main inj ection timing.展开更多
目的:探讨甘利欣联合阿奇霉素治疗对支原体肺炎伴急性肝功能损害患儿血清炎症因子、Ⅱ型肺泡表面抗原-6(KL-6)及核因子-κB(NF-κB)水平的影响。方法:选取86例支原体肺炎伴急性肝功能损害患儿为受试对象,随机数字表法分成研究组和对照组...目的:探讨甘利欣联合阿奇霉素治疗对支原体肺炎伴急性肝功能损害患儿血清炎症因子、Ⅱ型肺泡表面抗原-6(KL-6)及核因子-κB(NF-κB)水平的影响。方法:选取86例支原体肺炎伴急性肝功能损害患儿为受试对象,随机数字表法分成研究组和对照组各43例。对照组中途脱落1例,共42例有效病例入组,予以常规对症治疗+阿奇霉素疗法;研究组中途脱落3例,共40例有效病例入组,在对照组治疗基础上联合甘利欣静脉滴注疗法。观察对比两组受试患儿治疗前后血清炎症因子[白细胞介素-6(IL-6)、白细胞介素-12(IL-12)及肿瘤坏死因子-α(TNF-α)]、血清KL-6、血清NF-κB、肝功能指标[血清丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、总胆红素(TBIL)]变化情况,记录其发热、咳嗽、肺部湿罗音等消失时间差异。结果:治疗4w后,两组患儿IL-6[(44.5±6.2)pg/m L vs(60.3±6.6)pg/m L]、IL-12[(42.4±6.2)pg/m L vs(52.1±6.8)pg/m L]、TNF-α[(128.6±44.8)ng/L vs(201.4±51.8)ng/L]等血清炎症因子检测结果、ALT[(46.8±9.5)U/I vs(83.6±9.8)U/I]、AST[(62.2±10.1)U/I vs(84.8±10.2)U/I]、TBIL[(38.2±8.5)μmol/L vs(49.3±9.0)μmol/L]等肝功能指标检测结果及血清KL-6[(5.9±0.6)pg/m L vs(6.5±0.7)pg/m L]、NF-κB[(7.8±0.4)pg/m L vs(8.1±0.3)pg/m L]水平均较治疗前显著降低,且研究组小于对照组,差异有统计学意义(P<0.05)。研究组患儿治疗后发热、咳嗽、肺部湿罗音等消失时间均显著短于对照组患儿,差异有统计学意义(P<0.05)。结论:甘利欣联合阿奇霉素疗法可在促进支原体肺炎伴急性肝功能损害患儿病情转归、改善其血清炎症因子、调节肺功能、肝功能状态等方面发挥积极作用。展开更多
文摘目的探究B细胞刺激因子(BAFF)在特发性炎性肌病(IIM)相关肺间质病变(ILD)中的临床意义。方法纳入122例IIM患者,其中86例并发ILD,按性别、年龄匹配40例正常人作为对照,采用酶联免疫吸附试验检测BAFF,分析其临床意义。结果与non-ILD组相比,IIM-ILD组BAFF水平显著升高[2.19(1.07~4.54)ng mL vs.1.14(0.61~2.30)ng mL,P=0.005],是IIM-ILD的独立危险因素。抗MDA5抗体及抗合成酶抗体(ASA)阳性的IIM患者BAFF水平显著高于双阴性患者(P<0.05)。BAFF>3.74 ng mL时,对于诊断IIM-ILD的敏感性为36.0%,特异性为97.2%(AUC=0.681,P=0.002);联合KL-6时,对于诊断IIM-ILD的敏感性为82.6%,特异性为80.6%(AUC=0.868,P<0.001)。BAFF与铁蛋白呈正相关(r=0.368,P<0.001),与KL-6、肺部HRCT评分、肺功能无明显相关性。结论BAFF在IIM-ILD患者中显著升高,可作为IIM人群合并ILD的生物标志物。
文摘目的探讨高浓度氧通气对全身麻醉手术患者血清涎液化糖链蛋白6(krebs von den lungen 6,KL-6)及细胞因子表达的影响。方法经医院伦理学会批准,选取重庆市巴南区人民医院2018年1月2018年6月行全身麻醉手术者96例,按照随机数字表法分为A组(100%氧吸入)和B组(60%氧吸入),每组48例。分别于全身麻醉前30 min(T0)、全身麻醉后60 min(T1)、全身麻醉后120 min(T2)、全身麻醉后180 min(T3)、机械通气结束后60 min(T4)抽取桡动脉血行动脉血气分析。并于T0、T1、T2.T3及T4时间点抽取中心静脉血,检测血清KL-6、肿瘤坏死因子-a(TNF-x)、白细胞介素-8(IL-8)水平。结果两组患者全身麻醉前血清KL-6.TNF-α、IL-8组间比较差异无统计学意义(P>0.05)。全身麻醉后血清KL-6、TNF-α、IL-8均逐渐上升,其中A组T1血清KL-6、TNF-α、IL-8即显著高于T0[KL-6(U/mL):173.22±31.19比101.13±22.31;TNF-a(pg/mL):5.99±2.81比3.24±1.98;IL-8(pg/mL):128.11±32.21比98.22±19.77,均P<0.05]。B组T1血清KL-6高于T0[KL-6(U/mL):121.64±33.55比99.29±24.93]。T2血清TNF-α、IL-8高于TO0[TNF-a(pg/mL):4.41±2.71比3.24±1.98;IL-8(pg/mL):123.21±31.47比98.22±19.77,均P<0.05]。A组T1-T4血清KL-6、TNF-α.IL-8分别为[KL-6:(173.22±31.19)(189.38±39.11)(236.16±49.37)(210.04±38.66)U/mL;TNF-a(5.99±2.81)(6.21±2.56)(6.92±3.01)(6.31±2.88)pg/mL;IL-8:(128.11±32.21)(155.17±42.19)(188.28±40.33)(171.15±43.11)pg/mL],均高于同时点B组[KL-6:(121.64±33.55>/(141.33±36.74)(168.04±42.55)(166.39±44.63)U/mL;TNF-α(3.31±2.11)(4.41±2.71)(4.50±3.12)(4.39±2.41)pg/mL;IL-8:(103.12±23.3(123.21±31.47)(135.194.33)(137.339.22)pg/mL],差异均有统计学意义(均P<0.05)。结论全身麻醉术中高浓度氧气吸入可引起患者血清细胞因子及KL-6表达增多。
基金Supported by the National Natural Science Foundation of China(61371170)Funding of Jiangsu Innovation Program for Graduate Education(CXLX13_154)+1 种基金the Fundamental Research Funds for the Central Universities,the Priority Academic Program Development of Jiangsu Higher Education Institutions(PADA)Key Laboratory of Radar Imaging and Microwave Photonics,Ministry of Education,Nanjing University of Aeronautics and Astronautics
基金the financial support of the Key Scientific Research Projects of Colleges and Universities in Henan Province (No.21B470002)。
文摘Based on the optical engine,the ignition characteristics,combustion process and soot emission characteristics of diesel under different 2-Methylfuran(MF) atmospheres were investigated by high-speed photography and in-cylinder combustion analysis technology.The results show that at the same main injection timing,the ignition time of reactivity controlled compression ignition(RCCI) combustion mode is earlier than pure diesel combustion,and the ignition point is concentrated near the nozzle.Diesel acts as a spark plug to ignite the mixture,but the flame develops slowly in the early stages and the pressure in the cylinder rises slowly.Compared with pure diesel,RCCI combustion model has smaller peak values of in-cylinder pressure and heat release rate,shorter ignition delay period,earlier combustion phase and shorter combustion duration.At main spray time at 6℃A BTDC and 12℃A BTDC,with the increase of MF premixing ratio from 0 to 0.75,the peak cylinder pressure decreased by 19.6% and 26% respectively.In addition,with the increase of the MF heat value ratio,the area of KL factor> 1.5 in the combustion chamber decreased and the space integral natural luminescence(SINL) peak value decreased by 48.37%,and the soot formation rate and yield decreased significantly.However,when the MF heat value ratio was too large(75% of the total calorific value),the ignition delay period increased,and misfire occurred at the main injection timing of 0℃A BTDC.The RCCI mode of MF/diesel dual fuel has better stability,and better control effect can be obtained at different main inj ection timing.
文摘目的:探讨甘利欣联合阿奇霉素治疗对支原体肺炎伴急性肝功能损害患儿血清炎症因子、Ⅱ型肺泡表面抗原-6(KL-6)及核因子-κB(NF-κB)水平的影响。方法:选取86例支原体肺炎伴急性肝功能损害患儿为受试对象,随机数字表法分成研究组和对照组各43例。对照组中途脱落1例,共42例有效病例入组,予以常规对症治疗+阿奇霉素疗法;研究组中途脱落3例,共40例有效病例入组,在对照组治疗基础上联合甘利欣静脉滴注疗法。观察对比两组受试患儿治疗前后血清炎症因子[白细胞介素-6(IL-6)、白细胞介素-12(IL-12)及肿瘤坏死因子-α(TNF-α)]、血清KL-6、血清NF-κB、肝功能指标[血清丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、总胆红素(TBIL)]变化情况,记录其发热、咳嗽、肺部湿罗音等消失时间差异。结果:治疗4w后,两组患儿IL-6[(44.5±6.2)pg/m L vs(60.3±6.6)pg/m L]、IL-12[(42.4±6.2)pg/m L vs(52.1±6.8)pg/m L]、TNF-α[(128.6±44.8)ng/L vs(201.4±51.8)ng/L]等血清炎症因子检测结果、ALT[(46.8±9.5)U/I vs(83.6±9.8)U/I]、AST[(62.2±10.1)U/I vs(84.8±10.2)U/I]、TBIL[(38.2±8.5)μmol/L vs(49.3±9.0)μmol/L]等肝功能指标检测结果及血清KL-6[(5.9±0.6)pg/m L vs(6.5±0.7)pg/m L]、NF-κB[(7.8±0.4)pg/m L vs(8.1±0.3)pg/m L]水平均较治疗前显著降低,且研究组小于对照组,差异有统计学意义(P<0.05)。研究组患儿治疗后发热、咳嗽、肺部湿罗音等消失时间均显著短于对照组患儿,差异有统计学意义(P<0.05)。结论:甘利欣联合阿奇霉素疗法可在促进支原体肺炎伴急性肝功能损害患儿病情转归、改善其血清炎症因子、调节肺功能、肝功能状态等方面发挥积极作用。
