简介：AbstractBackground:Fourier transform infrared (FTIR) spectroscopy technique has not been used as a diagnostic tool for diabetes in clinical practice. This study was linked to structural changes in hemoglobin (Hb) in type 2 diabetes patients at higher levels of HbA1C using FTIR spectroscopy.Methods:Fifty-three diabetic patients from the Bahawal Victoria Hospital, Bahawalpur, Pakistan were categorized as group A (6% < HbA1C < 7%; n = 25) and group B (HbA1C ≥9%; n = 28). Another group (group N) of twenty blood samples was taken from healthy people from the Islamia University Bahawalpur, Pakistan. Data from all groups were collected from January 1, 2018 to March 31, 2019. The structure of Hb was studied by FTIR spectroscopy and impact of glucose on the fine structure of HbA1C was estimated.Results:Hb secondary structure erythrocyte parameters were altered by changing glucose concentrations. From FTIR spectra of all three groups it was found that Hb structure was slightly altered in group A, but significantly changed in group B (P < 0.05). There was an increase in β-sheet structure and a reduction in α-helix structure at elevated levels of HbA1C (group B) in type 2 diabetes.Conclusion:We suggest that higher level of glycation reflected by increased HbA1C might be a contributing factor to structural changes in Hb in type 2 diabetic patients. FTIR spectroscopy can be a novel technique to find pathogenesis in type 2 diabetes.

简介：AbstractBackground:The predictive value of hemoglobin A1c (HbA1c) levels in non-diabetic patients with myocardial infarction undergoing percutaneous coronary intervention (PCI) is still controversial. This study aimed to evaluate whether HbA1c levels were independently associated with adverse clinical outcomes in non-diabetic patients with coronary artery disease (CAD) who had undergone PCI by performing a meta-analysis of cohort studies.Methods:This meta-analysis included non-diabetic patients with CAD who had undergone PCI. A systematic search for publications listed in the PubMed, Embase, and Cochrane Library databases from commencement to December 2018 was conducted. Studies evaluating the adverse clinical outcomes according to abnormal HbA1c levels in non-diabetic patients diagnosed with CAD who had undergone PCI were eligible. The primary outcomes were long-term all-cause deaths and long-term major adverse cardiac events, and the secondary outcome was short-term all-cause deaths. The meta-analysis was conducted with RevMan 5.3 and Stata software 14.0. Odds ratios (ORs) were pooled using a random or fixed-effects model, depending on the heterogeneity of the included studies. Sub-group analysis or sensitivity analysis was conducted to explore potential sources of heterogeneity, when necessary.Results:Six prospective cohort studies involving 10,721 patients met the inclusion criteria. From the pooled analysis, abnormal HbA1c levels were associated with increased risk for long-term all-cause death (OR 1.39, 95% confidence interval [CI] 1.16-1.68, P = 0.001, I2 = 45%). Sub-group analysis suggested that abnormal HbA1c levels between 6.0% and 6.5% predicted higher long-term major adverse cardiac event (including all-cause deaths, non-fatal myocardial infarction, target lesion revascularization, target vessel revascularization, recurrent acute myocardial infarction, heart failure requiring hospitalization, and stent thrombosis) risk (OR 2.05, 95% CI 1.46-2.87, P < 0.001, I2 = 0). Contrarily, elevated HbA1c levels were not associated with increased risk of short-term all-cause death (OR 1.16, 95% CI 0.88-1.54, P = 0.300, I2= 0).Conclusions:An abnormal HbA1c level is an independent risk factor for long-term adverse clinical events in non-diabetic patients with CAD after PCI. Strict control of HbA1c levels may improve patient survival. Further studies in different countries and prospective cohort studies with a large sample size are required to verify the association.

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简介：糖尿病是一种威胁全人类健康的疾病．据国际糖尿病联盟（IDF）估计，目前全球约有超过2亿的糖尿病患者。随着生活水平的提高以及西方化饮食的影响．21世纪2型糖尿病将在中国等发展中国家流行，

简介：摘要目的探讨2型糖尿病（T2DM）患者糖化血红蛋白（HbAlc）联合其他各项指标进行检测，以及对糖尿病诊断、治疗的指导意义。方法选取2014年8月到2016年2月我院收治确诊的200例2型糖尿病患者为观察组，选取同期的200例健康体检者为对照组，应用糖化血红蛋白分析仪和全自动生化分析仪分析HbAlc、FPG各项指标进行检测，并对两组的检测结果进行比较，对HbAlc与各项检测结果进行了直线相关性的分析，并对检测结果进行统计学分析处理。结果观察组与对照组的各项指标比较，观察组的HbAlc与FPG呈正相关（P<0.05）。观察组和对照组HbAlc、FPG的检测结果也呈正相关（P<0.05），观察组的HbAlc、FPG、TG、TCH及LDL-C均高于对照组，HDL-C则低于对照组，差异有统计学意义（P<0.05）。结论T2DM患者中HbAlc水平与FPG、血脂各项指标具有一定的相关性。联合检测T2DM患者的HbAlc、FPG及血脂水平，良好地控制HbAlc，对糖尿病患者的检测提供指导意义。

简介：摘要：目的：探讨糖化血红蛋白A1c(HbA1c)对于妊娠期糖尿病（GDM)的诊断价值。方法：根据美国糖尿病学会对妊娠期糖尿病的诊断标准，分别采用葡萄糖氧化酶法和酶法对妊娠期糖尿病患者和健康孕妇进行血糖和糖化血红蛋白检测，对比HbA1c检测结果。结果：GDM组HbA1c为（4.37±0.31）s/%，健康孕妇组HbA1c为（4.54±0.34）s/%，差异较大（P

简介：摘要目的探讨2型糖尿病（T2DM）患者糖化血红蛋白（HbAlc）联合其它各项指标进行检测，以及对糖尿病诊断、治疗的指导意义。方法选取2016年8月到2017年7月我院收治确诊的200例2型糖尿病患者为研究组，选取同期的200例健康体检者为对照组，应用糖化血红蛋白分析仪和全自动生化分析仪分析HbAlc、FPG各项指标进行检测，并对两组的检测结果进行比较，对HbAlc与各项检测结果进行了直线相关性的分析，并对检测结果进行统计学分析处理。结果研究组与对照组的各项指标比较，研究组的HbAlc与FPG呈正相关（P<0.05）。研究组和对照组HbAlc、FPG的检测结果也呈正相关（P<0.05），研究组的HbAlc、FPG、TG、TCH及LDL-C均高于对照组，HDL-C则低于对照组，差异有统计学意义（P<0.05）。结论T2DM患者中HbAlc水平与FPG、血脂各项指标具有一定的相关性。联合检测T2DM患者的HbAlc、FPG及血脂水平，良好地控制HbAlc，对糖尿病患者的检测提供指导意义。

简介：摘要目的探讨糖化血红蛋白A1c（HbA1c）与载脂蛋白A-1（ApoA-1）比值（HbA1c/ApoA-1）对急性冠状动脉综合征（ACS）患者随访期间主要不良心血管事件（MACEs）的预测价值。方法本研究为回顾性队列研究，连续入选2017年3月至2019年3月于北京医院住院并接受冠状动脉造影的ACS患者，收集性别、年龄、既往史、Gensini评分、HbA1c和ApoA-1等基线资料。依据随访期间有无MACEs发生分为MACEs组和无MACEs组，分析2组间HbA1c/ApoA-1的差异。按HbA1c/ApoA-1水平的三分位数将患者分为高、中、低HbA1c/ApoA-1组，使用Cox比例风险模型评估3组间MACEs、全因死亡率等终点事件的差异。使用Kaplan-Meier生存分析比较各HbA1c/ApoA-l组间无MACEs生存率差异。使用Spearman秩相关分析评价HbA1c/ApoA-1与Gensini评分的相关性。结果共纳入ACS患者366例，59例发生MACEs，10例发生全因死亡。所有患者平均年龄为（65.9±10.3）岁，随访（22.3±4.4）个月，校正年龄、收缩压、糖尿病病史、冠状动脉病变严重程度后，高HbA1c/ApoA-1组患者MACEs发生率是低HbA1c/ApoA-1组患者的2.45倍（95%CI：1.16~5.18，P=0.019），但2组全因死亡率差异无统计学意义（P=1.000）。Kaplan-Meier生存分析显示高HbA1c/ApoA-l组MACEs风险最高，低HbA1c/ApoA-l组风险最低，差异有统计学意义（P<0.01）。Spearman秩相关分析结果显示，HbA1c/ApoA-1比值高低与ACS患者Gensini评分呈正相关（r=0.274，P<0.01）。结论HbA1c/ApoA-1是ACS患者MACEs的独立危险因素。高HbA1c/ApoA-1患者冠状动脉病变程度更重。HbA1c/ApoA-1水平可能作为评估ACS患者心血管风险的潜在指标，用于早期识别高危人群，预测MACEs的发生。

简介：Objective:Todeterminetheroleofhemoglobin(HB)-inducedhemeoxygenase-1(HO-1)ininjuredlungscausedbylimbischemia-reperfusion(I/R)inrats.Methods:Aratmodelofischemiainthehindlimbswasmadebyclampingtheinfrarenalaortawithamicrovascularclip,andlunginjuryoccurredafterreperfusion.ToinducetheexpressionofHO-1inthelungs,Hbwasadministratedintraperitoneallyat16hoursbeforereperfusion.NorthernblottingandWesternblottingwereusedtodetecttheexpressionofHO-1inthelungs,andthecarboxyhemoglobin(COHb)levelinarterialbloodwasassayed.Theeffectofhemoglobin(Hb)ontheinjuredlungsafterlimbI/Rwasdeterminedbymeasuringthechangesoflunghistology,polymorphonuclear(PMN)count,malondialdehyde(MDA)contentandwet-to-dryweightratio(W/D).Zincprotoporphyrin(ZnPP),aninhibitorofHO,wasusedtodeterminewhetherHO-1wasinducedbyHbafterlunginjury.Results:HbledtoasignificantincreaseinHO-1mRNAandproteinexpressioninthelungs,accompaniedbytheincreaseofCOHblevelinarterialblood.Comparedwiththeshamcontrols,thelungPMNcount,MDAcontentandW/Dsignificantlyincreasedat4hoursafterlimbI/R,whichreversedbythepretreatmentwithHbat16hoursbeforereperfusion.ZnPPblockedthisprotectiveroleofHbintheinjuredlungs.Conclusions:HbcaninducethelungHO-1expression,whichplaysanimportantroleinthedefenseagainstI/R-inducedlunginjuryinrats.

简介：Severalaspectsoftheapplicationofsilverelectrodetotheelectrochemicalstudiesofhemoglobinhavebeendiscussedinthispaper.Thesilverelectrodecouldnotonlybeuseddirectlyastheelectrodefortheelectrochemicalstudiesofhemoglobin,butalsoreactwithphenothiazineandbenzimidazoletogivestableandusefulmediator-coatedelectrodes.Inaddition,thesilverelectrodecouldhelpsodiumdodecylsulfatetogivefullplaytoitspromotingeffectontheprotein.

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