Objective:To investigate the hook effect in the detection of beta2-microglobulin(β2-MG)with different reagents as well as on two fully automated biochemical analyzers and their solutions.Methods:Using immunoturbidime...Objective:To investigate the hook effect in the detection of beta2-microglobulin(β2-MG)with different reagents as well as on two fully automated biochemical analyzers and their solutions.Methods:Using immunoturbidimetric assay forβ2-MG as the research object,β2-MG levels were detected by different concentration gradients ofβ2-microglobulin samples in Liedemann,Mack,and Myriad reagents of three manufacturers on two automatic biochemical analyzers,and the difference of the hook effect was comparatively analyzed.Results:Leadman reagent showed the hook effect on the Beckman AU5800 automated biochemistry analyzer,while both Maccura and Mindray reagents did not show the hook effect.After the experiments,we found the limit value of the pre-zone check of Leadman reagent,and changed the parameters of the instrument,when the limit value of the pre-zone check was reached,the instrument automatically diluted the specimen five times and then detected it again.After changing the parameters of the instrument,the correlation between the three methods of detecting samples of different concentrations was r>0.99.Conclusion:Before selecting the application of immunoturbidimetric reagents,we have to carry out the risk assessment of the hook effect and selectively set the parameters of the pre-zone check based on the highest concentration that may occur in the clinic;for the items that may have the hook effect,we have to selectively set the parameters of the pre-zone check when the ratio of average reaction rate and the immediate reaction rate is at the limit value,and the phenomenon of antigen excess may occur,the instrument will carry out automatic dilution before detection,so as to avoid the issuance of erroneous results of high-value samples due to the hook effect.展开更多
目的:探讨血清β2-微球蛋白(β2-MG)、内脏脂肪素(visfatin)水平变化与老年高血压患者血压变异性(BPV)的关联性。方法:选取某院2021年1月—2022年12月收治的120例老年高血压患者为研究组,同期120例血压正常体检老年人为对照组,根据24 h...目的:探讨血清β2-微球蛋白(β2-MG)、内脏脂肪素(visfatin)水平变化与老年高血压患者血压变异性(BPV)的关联性。方法:选取某院2021年1月—2022年12月收治的120例老年高血压患者为研究组,同期120例血压正常体检老年人为对照组,根据24 h收缩压变异性(24 h SBPV)将研究组分为低BPV(35例,24 h SBPV<15%)、中BPV(47例,24 h SBPV为15%~20%)、高BPV(38例,24 h SBPV>20%)3个亚组。比较2组入院时血清β2-MG、visfatin水平、血压参数,分析入院时血清β2-MG、visfatin水平与血压参数的相关性,比较不同程度BPV患者入院时血清β2-MG、visfatin水平,分析入院时血清β2-MG、visfatin联合检测对老年高血压患者BPV程度的诊断价值。结果:研究组β2-MG[(5.46±1.13)mg/mL]、visfatin[(9.75±2.08)μg/L]水平高于对照组[(1.37±0.42)mg/mL、(2.86±0.61)μg/L],差异具有统计学意义(P<0.05);研究组24 h DBP、24 h SBP、24 h DBPV、24 h SBPV均高于对照组,差异具有统计学意义(P<0.05);入院时血清β2-MG、visfatin水平与24 h DBP、24 h SBP、24 h DBPV、24 h SBPV均呈正相关,差异具有统计学意义(r_(β2-MG)=0.516、0.622、0.439、0.725,r_(visfatin)=0.703、0.681、0.617、0.658)(P<0.05);不同程度BPV患者入院时血清β2-MG、visfatin水平比较:高BPV>中BPV>低BPV,差异具有统计学意义(P<0.05);入院时,血清β2-MG、visfatin联合鉴别诊断高BPV严重程度AUC为0.909,大于单独指标鉴别诊断,差异具有统计学意义(P<0.05)。结论:β2-MG、visfatin水平变化与老年高血压患者血压变异性有密切关联,可作为临床诊断病情的重要参考依据。展开更多
AIM: To investigate the diagnostic utility of beta 2 microglobulin (B2-M) levels and analyze this correlation with the activity of inflammatory bowel disease (IBD).
目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片...目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片结果分为活动性肺结核组(n=50)和非活动性肺结核组(n=36),另选取86例来自我院体检中心的健康受试者作为对照组。检测所有受试者血清中YKL-40、HBD-2水平并分析肺结核患者血清中YKL-40与HBD-2的相关性;采用受试者工作特征(receiver operating characteristic,ROC)曲线分析血清中YKL-40、HBD-2水平对肺结核及活动性肺结核的诊断价值。结果肺结核组血清YKL-40、HBD-2水平高于对照组(P均<0.05);活动性肺结核组血清YKL-40、HBD-2水平高于非活动性肺结核组(P均<0.05)。肺结核患者血清中YKL-40与HBD-2的水平呈正相关(r=0.601)。YKL-40、HBD-2及2者联合诊断肺结核的曲线下面积(area under the curve,AUC)分别为0.895、0.922、0.962,2者联合诊断优于单独诊断;YKL-40、HBD-2及2者联合诊断活动性肺结核的AUC分别为0.891、0.881、0.959,2者联合诊断优于单独诊断。结论肺结核患者血清YKL-40、HBD-2水平显著升高,且随病情加重而升高,2者对肺结核及活动性肺结核的具有一定的诊断价值。展开更多
Objective:To investigate the expression of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9),and transforming growth factor beta 1(TGF beta 1)in the kidney tissue of rats with pyelonephritis and thei...Objective:To investigate the expression of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9),and transforming growth factor beta 1(TGF beta 1)in the kidney tissue of rats with pyelonephritis and their relationship with pyelonephritis by establishing a rat model of acute pyelonephritis.Methods:80 male Wistar rats were randomly divided into a control group and an experimental group,with 40 rats each.The rats of the control group were injected with and saline and those of the experimental group were injected with 10μg/mL Escherichia coli(E.coli)and saline(1:100);the solutions for both groups were administered every 3 days for 7 days.The expressions of MMP-2,MMP-9 and TGF beta 1 in the kidney tissues of rats in each group were observed.Results:The expression of MMP-9 and TGF beta 1in the kidney tissue of rat acute pyelonephritis model rats was significantly higher than those of the control group(P<0.01);the MMP-9 mRNA content in the kidney tissue of the experimental group was significantly higher than that of the control group(P<0.05);the TGF beta 1 mRNA content in the renal tissue of the experimental group increased significantly compared to the(P<0.05);MMP-2,MMP-9 and TGF beta 1 began to express in the early stage of pyelonephritis until the complete formation of renal pelvic edema.The difference between groups was statistically significant(P<0.01).Conclusion:MMP-9 and TGF beta 1 are important factors regulating renal tubular epithelial cell injury and inflammatory response.展开更多
The incidence and prevalence of youth-onset type 2 diabetes mellitus(T2DM)are increasing.The rise in frequency and severity of childhood obesity,inclination to sedentary lifestyle,and epigenetic risks related to prena...The incidence and prevalence of youth-onset type 2 diabetes mellitus(T2DM)are increasing.The rise in frequency and severity of childhood obesity,inclination to sedentary lifestyle,and epigenetic risks related to prenatal hyperglycemia exposure are important drivers of the youth-onset T2DM epidemic and might as well be responsible for the early onset of diabetes complications.Indeed,youth-onset T2DM has a more extreme metabolic phenotype than adult-onset T2DM,with greater insulin resistance and more rapid deterioration of beta cell function.Therefore,intermediate complications such as microalbuminuria develop in late childhood or early adulthood,while end-stage complications develop in mid-life.Due to the lack of efficacy and safety data,several drugs available for the treatment of adults with T2DM have not been approved in youth,reducing the pharmacological treatment options.In this mini review,we will try to address the present challenges and pitfalls related to youth-onset T2DM and summarize the available interventions to mitigate the risk of microvascular and macrovascular complications.展开更多
基金Baoding Science and Technology Bureau(2141ZF313)。
文摘Objective:To investigate the hook effect in the detection of beta2-microglobulin(β2-MG)with different reagents as well as on two fully automated biochemical analyzers and their solutions.Methods:Using immunoturbidimetric assay forβ2-MG as the research object,β2-MG levels were detected by different concentration gradients ofβ2-microglobulin samples in Liedemann,Mack,and Myriad reagents of three manufacturers on two automatic biochemical analyzers,and the difference of the hook effect was comparatively analyzed.Results:Leadman reagent showed the hook effect on the Beckman AU5800 automated biochemistry analyzer,while both Maccura and Mindray reagents did not show the hook effect.After the experiments,we found the limit value of the pre-zone check of Leadman reagent,and changed the parameters of the instrument,when the limit value of the pre-zone check was reached,the instrument automatically diluted the specimen five times and then detected it again.After changing the parameters of the instrument,the correlation between the three methods of detecting samples of different concentrations was r>0.99.Conclusion:Before selecting the application of immunoturbidimetric reagents,we have to carry out the risk assessment of the hook effect and selectively set the parameters of the pre-zone check based on the highest concentration that may occur in the clinic;for the items that may have the hook effect,we have to selectively set the parameters of the pre-zone check when the ratio of average reaction rate and the immediate reaction rate is at the limit value,and the phenomenon of antigen excess may occur,the instrument will carry out automatic dilution before detection,so as to avoid the issuance of erroneous results of high-value samples due to the hook effect.
文摘目的:探讨血清β2-微球蛋白(β2-MG)、内脏脂肪素(visfatin)水平变化与老年高血压患者血压变异性(BPV)的关联性。方法:选取某院2021年1月—2022年12月收治的120例老年高血压患者为研究组,同期120例血压正常体检老年人为对照组,根据24 h收缩压变异性(24 h SBPV)将研究组分为低BPV(35例,24 h SBPV<15%)、中BPV(47例,24 h SBPV为15%~20%)、高BPV(38例,24 h SBPV>20%)3个亚组。比较2组入院时血清β2-MG、visfatin水平、血压参数,分析入院时血清β2-MG、visfatin水平与血压参数的相关性,比较不同程度BPV患者入院时血清β2-MG、visfatin水平,分析入院时血清β2-MG、visfatin联合检测对老年高血压患者BPV程度的诊断价值。结果:研究组β2-MG[(5.46±1.13)mg/mL]、visfatin[(9.75±2.08)μg/L]水平高于对照组[(1.37±0.42)mg/mL、(2.86±0.61)μg/L],差异具有统计学意义(P<0.05);研究组24 h DBP、24 h SBP、24 h DBPV、24 h SBPV均高于对照组,差异具有统计学意义(P<0.05);入院时血清β2-MG、visfatin水平与24 h DBP、24 h SBP、24 h DBPV、24 h SBPV均呈正相关,差异具有统计学意义(r_(β2-MG)=0.516、0.622、0.439、0.725,r_(visfatin)=0.703、0.681、0.617、0.658)(P<0.05);不同程度BPV患者入院时血清β2-MG、visfatin水平比较:高BPV>中BPV>低BPV,差异具有统计学意义(P<0.05);入院时,血清β2-MG、visfatin联合鉴别诊断高BPV严重程度AUC为0.909,大于单独指标鉴别诊断,差异具有统计学意义(P<0.05)。结论:β2-MG、visfatin水平变化与老年高血压患者血压变异性有密切关联,可作为临床诊断病情的重要参考依据。
文摘AIM: To investigate the diagnostic utility of beta 2 microglobulin (B2-M) levels and analyze this correlation with the activity of inflammatory bowel disease (IBD).
文摘目的探索肺结核患者血清甲壳质酶蛋白40(chitinase protein 40,YKL-40)、β-防御素-2(human beta defensin 2,HBD-2)水平及其对肺结核的诊断价值。方法选取2021年6月—2023年6月山东省立医院收治的86例肺结核患者为肺结核组,根据痰涂片结果分为活动性肺结核组(n=50)和非活动性肺结核组(n=36),另选取86例来自我院体检中心的健康受试者作为对照组。检测所有受试者血清中YKL-40、HBD-2水平并分析肺结核患者血清中YKL-40与HBD-2的相关性;采用受试者工作特征(receiver operating characteristic,ROC)曲线分析血清中YKL-40、HBD-2水平对肺结核及活动性肺结核的诊断价值。结果肺结核组血清YKL-40、HBD-2水平高于对照组(P均<0.05);活动性肺结核组血清YKL-40、HBD-2水平高于非活动性肺结核组(P均<0.05)。肺结核患者血清中YKL-40与HBD-2的水平呈正相关(r=0.601)。YKL-40、HBD-2及2者联合诊断肺结核的曲线下面积(area under the curve,AUC)分别为0.895、0.922、0.962,2者联合诊断优于单独诊断;YKL-40、HBD-2及2者联合诊断活动性肺结核的AUC分别为0.891、0.881、0.959,2者联合诊断优于单独诊断。结论肺结核患者血清YKL-40、HBD-2水平显著升高,且随病情加重而升高,2者对肺结核及活动性肺结核的具有一定的诊断价值。
基金Health Commission of Hebei Province:Chuanxiong Extract Improves Inflammatory Response in Rats with Pyelonephritis through IL-6/STAT3 Signaling Pathway(Project number:20231486)。
文摘Objective:To investigate the expression of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9),and transforming growth factor beta 1(TGF beta 1)in the kidney tissue of rats with pyelonephritis and their relationship with pyelonephritis by establishing a rat model of acute pyelonephritis.Methods:80 male Wistar rats were randomly divided into a control group and an experimental group,with 40 rats each.The rats of the control group were injected with and saline and those of the experimental group were injected with 10μg/mL Escherichia coli(E.coli)and saline(1:100);the solutions for both groups were administered every 3 days for 7 days.The expressions of MMP-2,MMP-9 and TGF beta 1 in the kidney tissues of rats in each group were observed.Results:The expression of MMP-9 and TGF beta 1in the kidney tissue of rat acute pyelonephritis model rats was significantly higher than those of the control group(P<0.01);the MMP-9 mRNA content in the kidney tissue of the experimental group was significantly higher than that of the control group(P<0.05);the TGF beta 1 mRNA content in the renal tissue of the experimental group increased significantly compared to the(P<0.05);MMP-2,MMP-9 and TGF beta 1 began to express in the early stage of pyelonephritis until the complete formation of renal pelvic edema.The difference between groups was statistically significant(P<0.01).Conclusion:MMP-9 and TGF beta 1 are important factors regulating renal tubular epithelial cell injury and inflammatory response.
文摘The incidence and prevalence of youth-onset type 2 diabetes mellitus(T2DM)are increasing.The rise in frequency and severity of childhood obesity,inclination to sedentary lifestyle,and epigenetic risks related to prenatal hyperglycemia exposure are important drivers of the youth-onset T2DM epidemic and might as well be responsible for the early onset of diabetes complications.Indeed,youth-onset T2DM has a more extreme metabolic phenotype than adult-onset T2DM,with greater insulin resistance and more rapid deterioration of beta cell function.Therefore,intermediate complications such as microalbuminuria develop in late childhood or early adulthood,while end-stage complications develop in mid-life.Due to the lack of efficacy and safety data,several drugs available for the treatment of adults with T2DM have not been approved in youth,reducing the pharmacological treatment options.In this mini review,we will try to address the present challenges and pitfalls related to youth-onset T2DM and summarize the available interventions to mitigate the risk of microvascular and macrovascular complications.
