Comparison of Superoxide Dismutase Isoenzymes in Three Shrimps

[Objective] The aim of the study is to compare the activities of superoxide dismutase(SOD) isoenzymes in three species of shrimps Penaeus japonicus, Procambarus clarkia and Litopenaeus vannamei. [Method] The experimental materials were used to measure SOD activities after pretreatment, meanwhile the differences in SOD isoenzymes from different materials were assayed by polyacrylamide gel electrophoresis (PAGE). [Result] There are specific and histological differences in SOD activities of shrimps. With a similar electrophoresis pattern and migration rate, Penaeus japonicus and Litopenaeus vannamei showed remarkable differences with that of Procambarus clarkia. [Conclusion] The result showed the differences of cognation and origin of three shrimps.

Isoenzymes and soluble protein in Arthrospira from alka-line lakes in Erdos Plateau, China and in exotic species

The authors compared isoenzymes of five enzymes and soluble protein in Arthrospira platensis (A3) and A. erdosensis (A4) from alkaline lakes in Erdos Plateau, Nei Monggo (Inner Mongalia), China and exotic species of A. platensis (A1) from Chad and A. maxima (A2) from Mexico by means of polyacrylamide gel electrophoresis. The results showed that the isoenzymes of EST, POD and soluble protein were polymorphic. Monomorphism and polymorphism were found in isoenzymes of AMY, CAT and SOD, and monomorphism was found only in the introduced species. The isoenzymes and soluble protein of the local species are all polymorphic. The number of bands in these species were in the order of A3>A4>A1>A2. A2 is the most primary, A1 from Chad Lake is relatively primary, A3 and A4 are ad- vanced species in evolution. Cluster analysis showed that the relation between the two introduced species are the closest to each other, and so too are the two local ones.

血清CK-MB、NT-proBNP、PCT及CRP水平对婴幼儿川崎病诊断价值

目的 研究血清肌酸激酶同工酶(CK-MB)、氨基末端脑钠肽前体(NT-pro BNP)、降钙素原(PCT)、C反应蛋白(CRP)联合检测在婴幼儿川崎病诊断中的应用价值。方法 选取2021年1月至2022年12月郑州人民医院收治的96例婴幼儿川崎病患儿纳入川崎病组,纳入同期体检的50例健康婴幼儿作为对照组,根据冠状动脉病变(CAL)发生与否将96例婴幼儿川崎病患儿分为CAL发生组、CAL未发生组。检测血清CK-MB、NT-pro BNP、PCT、CRP水平,分析血清CK-MB、NT-pro BNP、PCT、CRP对婴幼儿川崎病及婴幼儿川崎病患儿CAL发生的诊断价值。结果 ROC曲线结果显示,血清CK-MB、NT-pro BNP、PCT、CRP及联合检测诊断婴幼儿川崎病的AUC分别为0.766、0.722、0.726、0.767、0.823,均有一定诊断价值,诊断婴幼儿川崎病患儿CAL的AUC分别为0.821、0.830、0.838、0.887、0.912,均有一定诊断价值。结论 血清CK-MB、NT-proBNP、PCT、CRP联合检测在婴幼儿川崎病诊断中具有较高应用价值。

血小板参数联合心肌3项对急性心肌梗死并发心力衰竭的预测研究

目的探讨血小板参数联合心肌3项对急性心肌梗死(AMI)患者并发心力衰竭(HF)的预测价值。方法回顾性选取2019年1月至2023年1月该院收治的451例AMI患者作为研究对象,收集所有研究对象的临床资料。根据患者冠状动脉再灌注治疗后1年内是否并发HF将其分为并发组和未并发组。比较并发组和未并发组入院后血小板参数[血小板计数(PLT)、平均血小板体积(MPV)、血小板体积分布宽度(PDW)]以及心肌3项[肌酸激酶同工酶(CK-MB)、肌红蛋白(Myo)、肌钙蛋白T(cTnT)]水平。采用多因素Logistic回归分析AMI患者并发HF的危险因素。绘制受试者工作特征(ROC)曲线分析各指标单独及联合检测对AMI患者并发HF的预测价值。结果随访1年后,451例AMI患者中有134例并发HF,发生率为29.71%。并发组纳入134例,未并发组纳入317例。并发组PLT、MPV、PDW、CK-MB、Myo、cTnT水平均高于未并发组,差异均有统计学意义(P<0.05)。并发组和未并发组性别、年龄、体质量指数、吸烟史、饮酒史、糖尿病史、高血压史、高血脂症、收缩压、舒张压、尿酸比较,差异均无统计学意义(P>0.05)。并发组血尿素氮(BUN)、超敏C反应蛋白(hs-CRP)、氨基末端B型利钠肽前体(NT-proBNP)、心肌做功指数(Tei指数)均高于未并发组,多支病变支数比例、左心室射血分数(LVEF)均低于未并发组,差异均有统计学意义(P<0.05)。多因素Logistic回归分析结果显示,PLT水平升高、MPV水平升高、PDW水平升高、CK-MB水平升高、Myo水平升高、cTnT水平升高、BUN水平升高、hs-CRP水平升高、NT-proBNP水平升高、Tei指数升高,LVEF降低均为AMI患者并发HF的危险因素(P<0.05)。ROC曲线分析结果显示,NT-proBNP、LVEF、Tei指数预测AMI患者并发HF的灵敏度分别为84.33%、81.34%、82.09%,特异度分别为74.13%、77.60%、76.03%,曲线下面积(AUC)分别为0.820、0.792、0.775。血小板参数联合心肌3项预测AMI并发HF的的AUC均高于各指标单独预测的AUC(Z=6.719、4.212、5.222、4.685、3.997、4.568,P<0.05)。结论血小板参数以及心肌3项指标均在AMI并发HF患者中异常高表达,均是AMI患者并发HF的影响因素,联合检测以上指标对AMI并发HF有较高的预测价值。

Expression and kinetic changes of alkaline phosphatase and its isoenzymes in experimental rat hepatoma

AIM To explore the expression and changes of hepatoma specific alkaline phospatase (ALP) in rats during canceration.METHODS The ALPs and isoenzymes of rat livers and sera were investigated in SD hepatomas induced with 0.05% 2-fluoenylacetamide (2-FAA).RESULTS By pathological examination and biochemical analysis. ALPs were overexpressed in rat livers during canceration and then were secreted into blood. Serum total ALP activities, liver ALP specific activities (U/g) including soluble and membrane-combined ALP activities of each group were all significantly higher (P＜0.01) than those of control group. The average ratios of soluble ALP to membrane-combined ALP were increased significantly after 6 weeks. ALP isoenzymes of rat sera and livers showed 5 bands on PAGE: ALP-Ⅰ and ALP-Ⅱ were specific for normal liver and rat hepatoma tissues, the ALP-Ⅱ appeared in rat liver after 6 weeks and in sera after 8 weeks.CONCLUSIONS ALP with carcino-embryonic protein was overexpressed in hepatoma tissues; the abnormal ALP-Ⅱ of ALP isoenzymes in sera and liver of rats can be used as a tumor marker for early diagnosis of rat hepatoma.

Adenosine deaminase isoenzymes estimation - as a diagnostic tool for tuberculous pleural effusions

Objective:To assess the efficacy of ADA isoenzyme estimation over that of total ADA level in pleural fluid and serum as a more efficient diagnostic indicator in tuberculous pleural effusions in high prevalence country like India.Methods:The efficacy was analysed in total thirty four patients of pleural effusions.Total ADA was estimated by Guitsi and Galanti Calorimetric method and ADA isoenzymes with and without EHNA[Erythro-9-（2- hydroxy-3-nonyl） adenine]a potent ADA1 inhibitor using the same method.Results:The results demonstrated a statistically significant values of ADA2 in serum（P【0.001）,pleural fluid（P = 0.000） and significant value for the ratio of pleural fluid ADA2/serum ADA2（P【0.001） and pleural fluid ADA/ADA(2（P【0. 005）.The sensitivity and specificity values of pleural fluid ADA|2 is 81.8%and 91.6%（cut off value 60 IU/L for Tuberculous effusions）,serum ADA2 95.4%and 66%（cut off value 70 IU/L for tuberculous effusions）. ADA2 is an isoenzyme,which is significantly raised in tuberculous pleural effusions both in the serum and pleural fluid.Conclusion:Estimation of ADA isoenzymes is redundant as a diagnostic aid over total ADA estimation in view of the limited improvements both in specificity and sensitivity patterns and also in term of cost-benefit ratio.

UV-B irradiation and allelopathy by Sargassum thunbergii affects the activities of antioxidant enzymes and their isoenzymes in Corallina pilulifera

Intertidal macroalgae can cope with the dual effects of UV-B irradiation and allelopathy.To study the impacts of the two stressors,we co-cultured Corallina pilulifera with Sargassum thunbergii in 1:1 and 1:10 ratios under different doses of UV-B radiation.The response of the antioxidant defense system,focusing on activities of superoxide dismutase(SOD),ascorbate peroxidase(APX),peroxidase(POX)and glutathione reductase(GR),was monitored.In addition,isoenzyme patterns were analyzed using nondenaturing poly acry lamide gel electrophoresis.The results show that the activities of SOD,APX,and GR were all significantly affected by both UV-B radiation and allelopathy,and the effect of their interaction was significant.However,POX activity was only influenced by UV-B radiation.The enzymatic assay revealed four distinct bands of SOD.The SODⅢband weakened significantly when the co-cultures were exposed to extremely high dosage of UV-B irradiation under both co-culturing ratios of 1:1 and 1:10.When the coculturing ratio was 1:10,both POXⅡand APXⅡenzy me activities increased with different UV-B doses.GR activity was at its greatest when the co-culture ratio was 1:10 and exposure was to the higher UV-B doses.The activities of GRⅢand GRⅣwere elevated under all UV treatments whereas the activities of GRI and GRII were reduced under the lower UV-B treatments but were elevated under the higher UV-B treatments.However,lipid peroxidation,as indicated by the thiobarbituric acid-reacting substance(TBARS)assay,increased significantly under the dual stressors.Our data sugge st that allelopathy and UV-B radiation stre ss can each affect the antioxidant enzyme activities of C.pilulifera.Critically,the adverse effects of UV-B on C.pilulifera were intensified by the compounding effects of allelopathy.

Purification of Active Peroxidase Isoenzymes and Their Responses to Nitrogen Fertilization and Rotation of Biomass Sorghum

Peroxidases (EC 1.11.1.7) participate in lignin biosynthesis. But peroxidation is not a tool for assaying lignocellulose metabolism because the active cannot yet be separated from the inactive peroxidases. A biochemical tool for assaying plant cell wall responses to agronomic practices is needed in the lignocellulosic feedstock renewable energy industry. Peroxidase of biomass sorghum was purified to 9 - 13 charge isomers by free solution IEF (Rotofor) technique. Free solution IEF was more effective than chromatographic purification of active peroxidase isoenzymes. Native PAGE separated each charge isomer to three anionic and three cationic isoenzymes. Hydrogen peroxide and o-dianisidine assays showed that only 20% - 30% of the isoenzymes displayed normal Michaelis-Menten kinetics. Sorghum planted without nitrogen fertilization induced the hydrogen peroxide noncompetitive inhibition of peroxidase, but 280 kg·ha–1 nitrogen fertilization and 100% sorghum mineral residue return to the soil tripled the concentration of active peroxidase and relieved the inhibition with concomitant increases of 350 kg lignin and 3532 kg·cellulose·ha–1. Nitrogen fertilization without crop rotation induced hydrogen peroxide inhibition of the peroxidase, but nitrogen fertilization and 25% sorghum rotation changed the PI of the active peroxidase from neutral to mildly acidic and relieved the inhibition with concomitant enormous increases of 690 kg lignin and 7151 kg·cellulose·ha–1. Hydrogen peroxide inhibition kinetics is consistent with the known peroxidase-substrate intermediate dead-end complex formation. Lignocellulosic yield was greatest under the agronomic management that combined 280 kg·ha–1 nitrogen fertilizer with 25% sorghum residue, which resulted in a shift of pI value of the active peroxidase due to a reduction in the Km value of the peroxidase. Therefore, up to 75% of sorghum biomass rather than only 50% can be harvested for conversion to bioenergy products.

AN ENZYMOCYTOCHEMICAL STUDY OF ALKALINE PHOSPHATASE ISOENZYMES IN GASTRIC CANCER-LIGHT AND ELECTRON MICROSCOPIC OBSERVATIONS

By using light and electron microscopic cytochemical technique, the activities and distributions of AP isoenzymes in gastric cancers and benign gastric diseases were examined.The results showed: Nagao, Regan and Kasahara isoenzymes, which were not expressed in normal gastric mucosae and non-malignant lesions, might be considered as tumor markers of gastric cancer;The epithelium of intestinal metaplasia exhibited intestinal-type AP only,which was one of the markers of well-differentiated intestinal metaplasia.In the view-point of the gene expression of AP isoenzymes, two mutation hypothesis and recessive-gene mutation hypothesis might be fit for gastric cancer.

Lactate Dehydrogenase Isoenzymes in Mammalian Cells Exposed to Isophenphos

The cytotoalcity of isophenphos, an organophosphorus insecticide that has the potential to cause delayed polyneuropathy, was evaluated in GBK and V79 ce1ls. A 72 h time course following isophenphos exposure indicated a dose-dependent growth inhibition as dctermined by cell counts. The administration of isophenphos (20g/ml) to GBK cells cultured at high densities indicated a decrease in the activities of LDH isocnzymes. Analysis of V79 cells revealed a decrease of LDH3, the only LDH isocnzyme detected in these cells.

Genetic variability of the Saudi Arabian Uromastyx aegyptia microlepis using protein and isoenzymes electrophoreses

Electrophoresis for SDS-proteins and isoenzymes were conducted to investigate the genetic variations within the agamid lizard Uromastyx aegyptia microlepis inhabiting the desert of Saudi Arabia. Samples were collected from four localities: a) Ushayrah near the town of Taif, b) Al Gwaih near Riyadh, c) Nairyah near Dammam and d) Mouileh near Tabok. A range of 7 to 14 protein bands were recorded in the patterns of the studied samples as measured by SDS-polyacrylamide gel electrophoresis. Among them, only one fraction was recorded in all samples as a common protein band. Six arbitrary chosen enzymes were examined by native-polyacrylamide gel electrophoresis. They were α and β esterase (Est), acid phosphatase (Acph), Alcohol dehydrogenase (Adh), Aldehyde oxidase (Ao) and peroxidase (Px). Seventeen heterogeneous alleles have been recorded;seven of them were fixed in all populations and 10 were polymorphic. Nearly all recorded alleles were monomeric in all samples. α-Est2, β-Est2, Acph2 and Px1 were restricted to Tabok samples and were not recorded in other localities. β-Est3, Acph3, Adh1, Adh1and Px2 were not recorded in Taif samples and the latter one was not recorded in the Dammam samples. The similarity coefficient that has been calculated according to the number of sharing bands indicated the clustering of Tabok and Dammam populations together. The constructed tree based on the sharing protein bands and isozyme alleles revealed similar results regarding the kinship of both populations. The present results indicated that the populations of this subspecies exhibits high genetic variability among its populations.

Tear Malate Dehydrogenase,Lactate Dehydrogenase and Their Isoenzymes in Normal Chinese Subjects and Patients of Ocular Surface Disorders

Purose:To determine levels of malate dehydrogenase(MDH),lactate dehydroge-nase(LDH)and their isoenzymes in tears of normal Chinese subjects and patients with ocular surface disorders.Methods:The age range of normal subjects was10-88,with136mal and 128fe-male subjects.123patients suffered from ocular surface disorders.Tears were col-lected from lower fornix on Xinghua filter disc(0.1mm thick,5mm in diameter).The values of tearMDHand LDHwere determined by MONARCH-2000Ana-lyzer(U.S.A)Their isoenzymes were separated by acetate cellulose elec-trophoresis and were determined by Model CDS-200light densitometer.Results:The normal values of tear LDH and MDH were 45.51+23.00-81.35+37.84umol·s^-1/Land11.00+5.33-19.50+9.17umol·s^-1/Lrespectively,dis-regarding sex or eye distriction(P>0.05).The values of tear LDHandMDH in the group aged10-19were significantly lower than in another groups(P<0.05),95%normal ranges of tearMDHaged below19and above20were3.63-19.90umol·s^-1/L.THe MDH isoenzymes comprised MDHs and MDHm,the former accounting for80.0-89.1%.The LDH isoenzymes comprised 5varieties.of which the ratioH/Mof subunit H tosubunit Mwas0.196+0.02.Levels of tear LDH,MDHand their isoenzymes in different diseases were various.Conclusions;Tear LDH/MDHratio reflected sensitively the matabolism of corneae and conjunetival epithelium.The changes in LDH isoenzymes were hel-ful to the differential diagnosis of external eye diseases,and the increase of MDHm reflected sensitively the degree of injury to the corneal epithelium.

血小板分布宽度联合肌酸激酶同工酶检测对肺炎支原体肺炎患儿预后的预测价值

目的探讨血小板分布宽度(PDW)和肌酸激酶同工酶(CK-MB)对肺炎支原体肺炎患儿预后预测的价值。方法本研究为前瞻性队列研究。选取2020年1月—2023年12月于亳州市人民医院就诊的肺炎支原体肺炎确诊患儿127例作为研究对象。根据治疗后的临床转归,将患儿分为好转组和不良转归组。比较两组患者治疗前PDW和CK-MB水平的差异,采用Pearson法分析PDW、CK-MB与患儿临床肺部感染评分(CPIS)的相关性,绘制受试者工作特征(ROC)曲线分析PDW和CK-MB对肺炎支原体肺炎患儿预后的预测效能。结果不良转归组的发热持续时间和临床肺部感染评分均高于好转组(P<0.05)。不良转归组血小板分布宽度、中性粒细胞比例、白细胞计数、单核细胞比例、肌酸激酶同工酶水平和C反应蛋白水平均高于好转组(P<0.05),淋巴细胞比例及血小板计数低于好转组(P<0.05)。临床肺部感染评分与血小板分布宽度、肌酸激酶同工酶呈正相关(r=0.426和0.260,均P<0.05)。ROC曲线结果表明,血小板分布宽度、肌酸激酶同工酶联合预测肺炎支原体肺炎患儿不良预后的曲线下面积为0.960(95%CI:0.931,0.989),敏感性为95.6%(95%CI:0.938,0.973),特异性为86.6%(95%CI:0.813,0.913),预测效能较好。结论PDW和CK-MB水平与肺炎支原体肺炎患儿的预后密切相关,且两者联合检测对于预测患儿的不良预后具有更高的敏感性和特异性,提示PDW和CK-MB可以作为评估肺炎支原体肺炎患儿预后的有价值的生化标志物。

糖尿病性心肌病患者血清PDK4,DECR1和MMP1表达水平及临床价值研究

目的探讨血清丙酮酸脱氢酶激酶同工酶4(pyruvate dehydrogenase kinase isoenzyme 4,PDK4),2,4-二烯酰辅酶A还原酶1(2,4-dienoyl coenzyme A reductase 1,DECR1)及基质金属蛋白酶1(matrix metalloproteinase 1,MMP1)的联合检测在糖尿病性心肌病(diabetic cardiomyopathy,DCM)诊断、临床分级和病情预后中的应用价值。方法选取2021年10月~2023年10月陕西省人民医院收治的126例糖尿病性心肌病(DCM组)患者及120例单纯糖尿病非心肌病患者(对照组),采用酶联免疫吸附法(ELISA)测定血清中PDK4,DECR1及MMP1蛋白表达水平,评估这三个检测指标在DCM中的诊断、临床分级和病情预后中的应用价值。结果DCM组患者血清PDK4(131.38±10.20 pg/ml),DECR1(152.06±12.57 pg/ml)及MMP1(40.27±4.02μg/ml)蛋白表达水平与对照组(82.69±8.17 pg/ml,86.14±9.55 pg/ml,17.77±0.98μg/ml)相比均明显升高,差异具有统计学意义(t=36.24,47.63,12.29,均P<0.001)。DCM组患者血清PDK4,DECR1及MMP1蛋白表达水平与NYHA心功能分级相关,随等级升高其蛋白表达水平均明显升高,差异具有统计学意义(F=24.12,30.04,12.66,均P<0.001);DCM组中重度组患者与轻度组患者比较,血清PDK4(164.92±1.35pg/ml vs 122.48±8.78pg/ml),DECR1(192.17±9.11pg/ml vs124.36±10.83pg/ml)及MMP1(84.44±7.38μg/ml vs 39.41±3.05μg/ml)蛋白表达水平均显著增高,差异具有统计学意义(t=26.33,47.12,15.41,均P<0.001)。血清PDK4,DECR1及MMP1三项联合检测DCM准确度(χ^(2)=18.23,21.37,22.07)、特异度(χ^(2)=9.72,13.43,15.12)、灵敏度(χ^(2)=12.07,16.07,17.55)与单项检测对比均明显升高,差异具有统计学意义(均P<0.05),且ROC曲线分析结果显示联合检测的AUC高达0.955,明显高于单项检测(Z=16.67,17.09,20.44,均P<0.05)。结论血清PDK4,DECR1及MMP1与DCM诊断、临床分级及病情预后有一定关联,三者联合检测有助于DCM的鉴别诊断。

AMI患者PCI术后血清PAF、CK-MB、sCD40L水平变化及其与再缺血的关系

目的探究急性心肌梗死(AMI)患者经皮冠状动脉介入(PCI)术后血清血小板活化因子(PAF)、肌酸激酶同工酶(CK-MB)、可溶性白细胞分化抗原40配体(sCD40L)水平的变化,并分析其与术后再缺血的关系。方法前瞻性选取2019年10月至2022年10月郑州大学第一附属医院收治的225例AMI患者作为研究对象,检测围手术期(术前、术后3 d、术后14 d)所有患者的血清PAF、CK-MB、sCD40L水平,术后接受为期1年随访,根据PCI术后有无再缺血发生分为再缺血发生组30例和再缺血未发生组195例。比较两组患者的临床资料及血清PAF、CK-MB、sCD40L水平;采用Logistic回归方程分析AMI患者PCI术后再缺血影响因素;绘制受试者工作特征曲线(ROC)分析血清PAF、CK-MB、sCD40L水平对AMI患者PCI术后再缺血的预测价值。结果再缺血发生组患者的中国冠心病患者抗血小板治疗优选方案(OPT-CAD)评分为(102.41±15.83)分,明显高于再缺血未发生组的(82.37±10.69)分,差异有统计学意义(P<0.05);再缺血发生组患者术后3 d、14 d的血清PAF水平分别为(89.15±20.11)ng/mL、(78.60±13.24)ng/mL,明显高于再缺血未发生组的(79.85±17.69)ng/mL、(67.42±10.38)ng/mL,CK-MB水平分别为(38.28±11.94)μg/L、(23.09±6.83)μg/L,明显高于再缺血未发生组的(34.83±10.16)μg/L、(17.69±5.12)μg/L,sCD40L水平分别为(4681.69±305.63)pg/mL、(3721.59±175.63)pg/mL,明显高于再缺血未发生组的(4369.39±227.84)pg/mL、(3129.46±132.88)pg/mL,差异均有统计学意义(P<0.05);经Logistic回归方程分析结果显示,OPT-CAD评分及术后3 d、14 d血清PAF、CK-MB、sCD40L水平均为AMI患者PCI术后再缺血发生的危险因素(P<0.05);经ROC分析结果显示,术后3 d血清PAF、CK-MB、sCD40L联合预测再缺血发生的AUC为0.877,术后14 d血清PAF、CK-MB、sCD40L联合预测再缺血发生的AUC为0.930,均大于各时间点三项血清指标单独预测。结论血清PAF、CK-MB、sCD40L水平是AMI患者PCI术后再缺血发生的危险因素,围手术期血清PAF、CK-MB、sCD40L联合预测患者PCI术后再缺血风险的效能较高,可为临床防治PCI术后再缺血提供参考。

血清CK-MB、IL-6、LDH水平联合检测在慢性心力衰竭诊断中的效能

目的:分析血清肌酸激酶同工酶(CK-MB)、白细胞介素-6(IL-6)、乳酸脱氢酶(LDH)水平联合检测在慢性心力衰竭(CHF)诊断中的效能。方法:选取2021年1月至2023年1月该院收治的83例CHF患者进行横断面研究,设为研究组,依据是否发生主要心血管不良事件将其分为预后不良者18例与预后良好者65例,另选取同期于该院体检的83名健康志愿者作为对照组。比较两组、不同心功能分级及不同预后CHF患者血清CK-MB、IL-6、LDH水平,采用Pearson相关性分析血清CK-MB、IL-6、LDH水平与CHF患者心功能分级的相关性,绘制受试者工作特征(ROC)曲线分析治疗后1个月血清CK-MB、IL-6、LDH水平单项及联合检测诊断CHF患者的效能。结果:研究组血清CK-MB、IL-6、LDH水平均高于对照组,差异有统计学意义(P<0.05);不同心功能分级CHF患者血清CK-MB、IL-6、LDH水平比较,Ⅱ级<Ⅲ级<Ⅳ级,差异均有统计学意义(P<0.05);经Pearson相关性分析结果显示,血清CK-MB、IL-6、LDH水平与CHF患者心功能分级均呈正相关(r>0,P<0.05);治疗后1个月,两组血清CK-MB、IL-6、LDH水平均低于治疗前,但预后不良者高于预后良好者,差异有统计学意义(P<0.05);经ROC曲线分析结果显示,血清CK-MB、IL-6、LDH水平单项及联合检测诊断CHF患者预后不良的曲线下面积分别为0.788、0.769、0.760、0.906,且联合检测诊断CHF患者预后不良的效能高于三者单项检测。结论:血清CK-MB、IL-6、LDH水平联合检测诊断CHF的效能高于三者单项检测。

不同入路法联合小针刀术在胸腰椎创伤性骨折微创椎弓根钉内固定术中的临床疗效研究

目的:分析不同入路法联合小针刀术在胸腰椎创伤性骨折微创椎弓根钉内固定术中的临床疗效,以及对血清骨特异性碱性磷酸酶(BALP)、Ⅰ型胶原羧基肽β特殊序列(β-CTX)水平的影响。方法:选取我院2020年1月-2022年6月收治的120例行微创椎弓根钉内固定术联合小针刀术干预治疗的胸腰椎创伤性骨折患者,随机分为三组。A组(40例)选择经皮入路,B组(40例)选择经Wiltse入路,C组(40例)选择经后正中入路。记录并比较三组伤椎有效性指标:Oswestry功能障碍指数(ODI)、后凸Cobb角和前缘高度比;视觉模拟疼痛(VAS)评分、血清BALP、β-CTX水平和围手术期指标(手术时间、术中出血量和术后引流量)。结果:三组患者术后7 d、30 d的伤椎ODI、后凸Cobb角和前缘高度比均优于术前,差异有统计学意义(P <0.05),但三组间伤椎ODI、后凸Cobb角和前缘高度比差异无统计意义(P>0.05);三组患者术后VAS评分均显著下降,差异有统计学意义(P <0.05),且三组术后1 d、7 d的VAS评分比较差异有统计意义(P <0.05);三组患者术后血清BALP水平均明显上升,血清β-CTX水平均明显下降,差异均有统计学意义(P <0.05),且三组术后7 d的血清BALP及β-CTX水平比较差异有统计意义(P <0.05);三组手术时间、术中出血量和术后引流量关系为A组<B组<C组,差异有统计学意义(P <0.05)。结论:经皮入路和经Wiltse入路微创椎弓根钉内固定术联合小针刀术干预治疗能有效改善胸腰椎创伤性骨折患者伤椎有效性及骨代谢水平,而传统后正中入路的有效性及对骨代谢水平的改善作用相对较差,临床可结合患者情况在经皮入路和经Wiltse入路二者之间酌情选择入路方式,并结合小针刀术进行干预治疗。

血清肌钙蛋白(cTnI)、肌红蛋白(Mb)及肌酸激酶同工酶(CK-MB)联合检测早期诊断急性心肌梗死的临床价值

目的探讨肌钙蛋白I(Cardiac Troponin I,cTnI)、肌红蛋白(Myoglobin,Mb)、肌酸激酶同工酶-MB(Creatine Kinase isoenzyme-MB,CK-MB)联合检测早期诊断急性心肌梗死的价值。方法选取2021年1月—2022年12月昆山市第二人民医院门诊60例急性心肌梗死患者及60例健康体检者,分别设为观察组与对照组,均检测cTnI、Mb、CK-MB,并比较两组检测值差异,分析联合检测与单项指标检测的诊断效能。结果观察组cTnⅠ(24.85±1.63)μg/mL为Mb(122.46±18.62)μg/L为CK-MB(42.54±8.29)U/L,均较对照组高,差异有统计学意义(t=114.186、38.386、36.493,P均<0.05)。联合检测诊断准确率为95.83%,灵敏度为96.67%,高于cTnI、Mb、CK-MB单独检测值,差异有统计学意义(P均<0.05);特异度为95.00%,与单独检测对比,差异无统计学意义(P>0.05)。结论急性心肌梗死患者cTnI、Mb、CK-MB异常升高,该三指标联用可提高诊断效能。

高胆红素血症新生儿血清CKMB NPY及β_(2)-MG的水平变化及临床意义

目的:探讨高胆红素血症新生儿血清肌酸激酶同工酶(CreatineKinase-MB,CKMB)、神经肽Y(Neuropeptide Y,NPY)及β_(2)-微球蛋白(β_(2)-microglobulin,β_(2)-MG)的水平变化及临床意义。方法:选取本院2019年1月至2022年1月收治的高胆红素血症新生儿118例为观察组,根据总胆红素(total bilirubin,STB)分度分为:轻度组58例(220.6μmoL/L<STB≤256.5μmoL/L),中度组42例(256.5μmoL/L<STB≤342μmoL/L),重度组18例(STB>342μmoL/L);另选取同期于本院经皮胆红素测定无黄疸的健康新生儿112例为对照组。比较对照组、观察组CKMB、NPY及β_(2)-MG水平;比较观察组不同STB程度患者CKMB、NPY及β_(2)-MG水平;根据经皮胆红素测定的STB水平分为急性期组及恢复期组,比较急性期及恢复期两组患者CKMB、NPY及β_(2)-MG水平。结果:观察组CKMB、NPY及β_(2)-MG水平均比对照组高(P<0.05)。不同STB程度患者CKMB、NPY、β_(2)-MG水平比较:轻度组<中度组<重度组(P<0.05)。118例高胆红素血症新生儿中,急性期组67例和恢复期组51例,急性期组CKMB、NPY、β_(2)-MG水平均高于恢复期组(P<0.05)。结论:血清CKMB、NPY及β_(2)-MG与高胆红素血症新生儿病情严重程度及预后关系密切,可通过检测上述指标评估患儿病情进展及预后,具有重要临床意义。

心电图结合血清肌酸激酶同工酶水平对急性心肌梗死并发室性心律失常的诊断价值

目的探讨心电图结合血清肌酸激酶同工酶(CK-MB)水平对急性心肌梗死(AMI)并发室性心律失常(VA)的诊断价值。方法回顾性分析2019年5月至2022年7月江苏省淮安市第二人民医院收治的305例AMI患者的临床资料,根据患者是否并发VA分为VA组(124例)与非VA组(181例)。比较两组T波峰-末间期(Tp-Te)、经心率校正的Tp-Te间期(Tp-Tec)、血清CK-MB水平,分析AMI并发VA的影响因素,分析Tp-Te、Tp-Tec、血清CK-MB水平对AMI并发VA的诊断价值。结果VA组Killip心功能分级Ⅲ~Ⅳ级例数占比、肌钙蛋白I、血肌酐、白细胞计数、Tp-Te、Tp-Tec、血清CK-MB水平高于非VA组(P<0.05)。logistic回归结果显示,Killip心功能分级Ⅲ~Ⅳ级(OR=2.832)、Tp-Te升高(OR=3.611)、Tp-Tec升高(OR=4.315)、血清CK-MB升高(OR=3.770)为AMI并发VA的影响因素(P<0.05)。Tp-Te、Tp-Tec、血清CK-MB水平及三者联合诊断AMI并发VA的曲线下面积(AUC)值分别为0.790、0.802、0.813、0.895(P<0.05),且三者联合诊断的AUC值高于单独指标诊断的AUC值(P<0.05)。结论心电图(Tp-Te、Tp-Tec)结合血清CK-MB水平诊断AMI并发VA具有重要价值。