地中海贫血与缺铁性贫血应用血液检验鉴别诊断的临床研究

目的探讨地中海贫血与缺铁性贫血应用血液检验鉴别诊断的临床效果。方法选取2017年2月-2019年3月附属医院接收的94例贫血患者为研究对象,根据患者的贫血类型将其分为2组,即地中海贫血组和缺铁性贫血组,每组各47例,并选取同期在附属医院接受体检的健康者50例为对照组,比较3组血液检查结果、检验情况,同时使用ROC曲线判断血液检验的诊断价值。结果与对照组比较,地中海贫血组、缺铁性贫血组的血红蛋白、血清铁蛋白、红细胞计数、红细胞平均体积、红细胞平均血红蛋白、红细胞平均血红蛋白浓度水平更低,血红细胞分布宽度水平更高,比较差异显著(P<0.05);与地中海贫血组比较,缺铁性贫血组的血红蛋白、血清铁蛋白、红细胞计数、红细胞平均血红蛋白、红细胞平均血红蛋白浓度水平更高,血红细胞分布宽度、红细胞平均体积水平体积更低,比较差异显著(P<0.05);根据ROC曲线的结果,单独检测血液样本中血红蛋白、红细胞平均体积和红细胞分布宽度的AUC与联合检测的AUC均超过0.80,诊断价值较高。结论血液检验对临床诊断地中海贫血、缺铁性贫血具有重要意义,且血红蛋白、红细胞平均体积和红细胞分布宽度联合检验拥有较高的诊断价值。     

血常规检验用于炎症性肠病患者诊断中的临床效果分析

目的分析血常规检验用于炎症性肠病患者诊断中的临床效果。方法随机选取我院2017年5月至-2018年2月收治的35例炎症性肠病患者作为观察组,选择我院同期体检健康个体35例作为对照组。从血红蛋白浓度、血小板计数、C反应蛋白水平以及平均红细胞比容和血沉几个方面对血常规进行检验,并对比两组研究对象的各项血常规指标。结果观察组患者(以重度患者为例)的平均红细胞比容(81.81±12.21)fL,血红的蛋白浓度(102.57±13.97)g/L,平均血小板体积为(8.46±2.86)L,显著低于对照组研究对象。对照组患者的血小板计数为(157.64±20.56)109L,C反应蛋白为(11.22±5.86)mg/L,血沉为(17.44±4.05),均低于观察组患者。结论综上所述,健康人群和炎症性肠病患者的血常规指标存在明显差异。因此,可将血常规检验作为炎症性肠病患者早期诊断的主要方法,防止延误最佳治疗时机。     

慢性乙型肝炎患者免疫球蛋白检验效果评价

目的分析慢性乙型肝炎患者免疫球蛋白检验的临床应用价值。方法以2018年7月-2019年7月期间在我院确诊的50例慢性乙型肝炎患者进行研究,将其设置为观察组,另外选取同时期来我院进行体检的50例健康人员作为对照组,对两组的免疫球蛋白水平进行对比,分析慢性乙型肝炎与免疫球蛋白的相关性。结果与对照组相比,观察组患者的IgA、IgG、IgM水平均较高,并且通过对观察组患者进行随访,发现其中有14例患者病情恶化、其余36例患者情况有所好转,分析发现好转的患者其IgA、IgG、IgM低于恶化的患者,数据对比差异均为P<0.05。结论免疫球蛋白水平与慢性乙型肝炎具有一定的相关性,可以通过检验免疫球蛋白水平来分析患者的病情发展,进而对患者进行有效的治疗,有利于改善患者的预后效果。     

Effect of stromal cell-derived factor-1/CXCR4 axis in neural stem cell transplantation for Parkinson’s disease

Previous studies have shown that neural stem cell transplantation has the potential to treat Parkinson’s disease,but its specific mechanism of action is still unclear.Stromal cell-derived factor-1 and its receptor,chemokine receptor 4(CXCR4),are important regulators of cell migration.We speculated that the CXCR4/stromal cell-derived factor 1 axis may be involved in the therapeutic effect of neural stem cell transplantation in the treatment of Parkinson’s disease.A Parkinson’s disease rat model was injected with 6-hydroxydopamine via the right ascending nigrostriatal dopaminergic pathway,and then treated with 5μL of neural stem cell suspension(1.5×104/L)in the right substantia nigra.Rats were intraperitoneally injected once daily for 3 days with 1.25 mL/kg of the CXCR4 antagonist AMD3100 to observe changes after neural stem cell transplantation.Parkinson-like behavior in rats was detected using apomorphine-induced rotation.Immunofluorescence staining was used to determine the immunoreactivity of tyrosine hydroxylase,CXCR4,and stromal cell-derived factor-1 in the brain.Using quantitative real-time polymerase chain reaction,the mRNA expression of stromal cell-derived factor-1 and CXCR4 in the right substantia nigra were measured.In addition,western blot assays were performed to analyze the protein expression of stromal cell-derived factor-1 and CXCR4.Our results demonstrated that neural stem cell transplantation noticeably reduced apomorphine-induced rotation,increased the mRNA and protein expression of stromal cell-derived factor-1 and CXCR4 in the right substantia nigra,and enhanced the immunoreactivity of tyrosine hydroxylase,CXCR4,and stromal cell-derived factor-1 in the brain.Injection of AMD3100 inhibited the aforementioned effects.These findings suggest that the stromal cell-derived factor-1/CXCR4 axis may play a significant role in the therapeutic effect of neural stem cell transplantation in a rat model of Parkinson’s disease.This study was approved by the Animal Care and Use Committee of Kunming Medical University,China(approval No.SYXKK2015-0002)on April 1,2014.     

探讨溶血标本对于肝功能检验结果准确性的临床影响分析

目的探讨溶血标本对肝功能检验结果准确性的临床影响。方法选取辽宁省复员军人康宁医院2018年6月至2019年6月健康体检者70例,采集两份血液标本,一份为溶血标本,另一份为未溶血标本,检测比较两组肝功能指标、金属离子检测水平。结果非溶血组AST、ALT、TP、ALB、γ-GT、Tbil、Dbil及ALP等肝功能指标及Na~+、Cl~-、Ca~(2+)及K~+等金属离子指标与非溶血组比较有显著性差异(P<0.05)。结论溶血标本会影响肝功能检验结果的准确性。     

Toxic tau: structural origins of tau aggregation in Alzheimer's disease

Alzheimer’s disease is characterized by the extracellular accumulation of the amyloidβin the form of amyloid plaques and the intracellular deposition of the microtubule-associated protein tau in the form of neurofibrillary tangles.Most of the Alzheimer’s drugs targeting amyloidβhave been failed in clinical trials.Particularly,tau pathology connects greatly in the pathogenesis of Alzheimer’s disease.Tau protein enhances the stabilization of microtubules that leads to the appropriate function of the neuron.Changes in the quantity or the conformation of tau protein could affect its function as a microtubules stabilizer and some of the processes wherein it is involved.The molecular mechanisms leading to the accumulation of tau are principally signified by numerous posttranslational modifications that change its conformation and structural state.Therefore,aberrant phosphorylation,as well as truncation of tau protein,has come into focus as significant mechanisms that make tau protein in a pathological entity.Furthermore,the shape-shifting nature of tau advocates to comprehend the progression of Alzheimer’s disease precisely.In this review,we emphasize the recent studies about the toxic and shape-shifting nature of tau in the pathogenesis of Alzheimer’s disease.     

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