天津市社区人群中尿糖筛检结果

目的：调查（天津市）社区居民尿糖阳性检出率及人群分布情况,为糖尿病防治提供参考依据和指标。方法：采用整群随机抽样方法及医学检验手段,对从本市社区人群中抽取到的调查对象共６２５７７人（男３０４６２人,女３２１１５人）进行了尿糖筛检调查试验。结果：受检人群的尿糖阳性检出率,在男、女及合计分别为９．００‰,１１．６０‰及１０．３０‰;尿糖阳性率按年龄和职业分布明显不同。结论：得出了天津市社区人群尿糖水平     

癌症患者医院感染危险因素配对病例对照研究

目的 探讨癌症患者医院感染的危险因素,对制定防止医院感染发生的措施提供依据。方法 采用流行病学配对研究方法对１６８例医院感染癌症病作１６８名对照病例进行了配对调查。结果：（１）抗肿瘤经或免疫抑制剂的应用与癌症病人医院感染发病有非常密切的关系（Ｘ＾２＝１０７．０２,Ｐ〈０．０１,ＯＲ＝１３．６,９５％ＣＩ７．１６～２１．７８）。（２）各种介入性检诊或治疗手段的应用也是造成癌症病人医院感染的主要危险因     

薄层扫描法测定益肾胶囊中大黄素

应用薄层扫描法对益肾胶囊中大黄素进行了定性定量方法研究，对实验条件进行优选，排除了干扰，结果满意，加样回收率为98．66％，RSD＝1．04％。     

新时代下医学影像本科人才培养模式的改革与实践

新时代下医学模式发生极大转变，对医学影像技术人才知识、素质、能力等方面也提出了更高的要求。培养适应学科发展、德才兼备、具有国际竞争力的高素质人才已成为影像技术教育面临的重大课题。天津医科大学充分利用学校医学影像学学科临床、科研优势带动影像技术学科发展，对影像技术人才培养模式进行了改革与实践，取得了较好的效果。     

Identification of the major allergenic epitopes of Eriocheir sinensis roe hemocyanin: A novel tool for food allergy diagnoses

Crab meat and roe are highly nutritious delicacies in China. While extensive research has been conducted for allergens derived from crab-meat, data relevant to the allergenic potential of crab roe derived proteins, of which hemocyanin is a principal contender, are almost entirely absent. Using bioinformatics prediction and IgE-binding assays, the three principal immunodominant epitopes of hemocyanin were identified and then combined as a single recombinant fusion protein (rHc). This together with the full-length recombinant protein (Hc) were expressed in Escherichia coli and subsequently identified by SDS-PAGE and immunoblotting. Ninety-five percent of our patients were found to carry rHc-specific IgE antibodies by ELISA. Dot-blot inhibition, together with ELISA inhibition studies, showed that pre-incubation of patient sera with the recombinant epitope protein could inhibit26% to 63% (mean: 50%) of IgE binding to immobilized, full-length Hc and the dose-response curve represents as a sigmoid shape. The recombinant protein (rHc) represents a versatile biologic tool with which to diagnose and investigate therapies for E. sinensis allergy.     

Serum reference interval of ARCHITECT alpha-fetoprotein in healthy Chinese Han adults: Sub-analysis of a prospective multi-center study

ObjectivesAlpha-fetoprotein (AFP) has been widely used in clinical practice for decades. However, large-scale survey of serum reference interval for ARCHITECT AFP is still absent in Chinese population. This study aimed to measure serum AFP levels in healthy Chinese Han subjects, which is a sub-analysis of an ongoing prospective, cross-sectional, multi-center study (ClinicalTrials.gov Identifier: NCT03047603).MethodsThis analysis included a total of 530 participants (41.43 ± 12.14 years of age on average, 48.49% males), enrolled from 5 regional centers. Serum AFP level was measured by ARCHITECT immunoassay. Statistical analysis was performed using SAS 9.4 and R software.ResultsAFP distribution did not show significant correlation with age or sex. The overall median and interquartile range of AFP was 2.87 (2.09, 3.83) ng/mL. AFP level did not show a trend of increasing with age. The new reference interval was 2.0–7.07 ng/mL (LOQ– 97.5th percentiles).ConclusionsThe reference interval for ARCHITECT AFP is updated with the data of adequate number of healthy Han adults. This new reference interval is more practical and applicable in Chinese adults.     

Serum Levels of Calreticulin in Correlation with Disease Activity in Patients with Rheumatoid Arthritis

Objective

The aim of our study was to investigate the contribution of serum calreticulin (CRT) in the assessment of disease activity in rheumatoid arthritis (RA).

Methods

Serum CRT levels were measured by ELISA in 70 patients with established RA, 30 systemic lupus erythematosus (SLE), 25 other autoimmune diseases, 20 osteoarthritis (OA), and 35 of healthy controls (HC). Correlations of CRT serum levels with disease activity [Disease Activity Score for 28 joints (DAS28)], erythrocyte sedimentation rate(ESR) and C-reactive protein (CRP) were assessed. Serum CRT levels were also detected in RA patients whose RF, anti-CCP and anti- MCV antibodies were positive and negative.

Results

Serum CRT levels in RA patients (4.817?±?2.425 ng/ml) was significantly higher (P <0.05) compared with those in the serum of OA (3.574?±?0.942 ng/ml), SLE (4.013?±?1.536 ng/ml), other autoimmune diseases (3.882?±?0.837 ng/ml) and HC (3.726?±?0.627 ng/ml). Significant positive correlation of CRT with DAS28, ESR and CRP was found in RA patients. Furthermore, RA patients whose anti-CCP and anti-MCV antibodies were positive had higher levels of CRT (P?<?0.01).

Conclusion

Serum CRT levels were increased in patients with RA compared with those controls. Moreover, a significant correlation was observed between serum CRT levels and disease activity in RA. It might be used as a potential biomarker for clinical diagnosis and provide additional information regarding disease activity along with the traditional indices such as ESR and CRP.     

hs-CRP联合D-二聚体对急性心梗PCI术后亚急性支架内 血栓形成的预测价值

摘要：目的 探究超敏C反应蛋白（hs-CRP）和D二聚体（D-dimer）联合预测急性心肌梗死（AMI）患者经皮冠状 动脉介入治疗（PCI）术后发生亚急性支架内血栓形成（SST）的价值。方法 分析自2012年1月—2018年1月收治的 因AMI接受PCI治疗的9 261例患者,其中术后发生SST的72例（0.78%）患者为SST组,根据年龄、性别比例在术后未 发生SST的患者中抽取210例作为对照组。对比2组患者冠心病危险因素（性别、年龄、体质量指数等）、临床资料［收 缩压、舒张压、磷酸肌酸激酶（CK）、肌酸激酶同工酶（CK-MB）等］、冠脉造影结果情况（病变血管、支架贴壁不良等）。 将上述资料统计学分析时P < 0.1的指标纳入多因素Logistic回归分析。将hs-CRP和D-dimer进行ROC曲线分析, 评估两者联合对SST的预测价值。结果 SST组患者术后D-dimer、hs-CRP和Glu水平、支架贴壁不良例数、支架置 入数目均高于对照组,左室射血分数（LVEF）低于对照组,差异有统计学意义（P＜0.05）。多因素Logistic回归分析显 示 D-dimer 升高、hs-CRP 升高、血糖升高、支架贴壁不良是 SST 的独立危险因素,LVEF＞0.50 是 SST 的保护因素。 hs-CRP和D-dimer的联合指标hs-CRP-D-dimer在ROC曲线下面积为0.875,对SST的最佳cutoff值为14.28,其敏感 度为 77.8%,特异度为 80.5%。结论 D-dimer、hs-CRP 和血糖升高、支架贴壁不良是影响 SST 的独立危险因素, LVEF>0.50是SST的保护性因素。hs-CRP和D-dimer联合是预测AMI患者PCI术后发生SST的理想指标,值得临床 推广应用。     

4-羟基-2-(1H-吡唑-1-基)嘧啶-5-甲酸的合成工艺改进研究

目的对4-羟基-2-(1H-吡唑-1-基)嘧啶-5-甲酸的合成工艺条件进行优化。方法以1-脒基吡唑盐酸盐和乙氧基甲叉基丙二酸二乙酯为起始原料,在三乙胺催化下环合得到中间体4-羟基-2-(1H-吡唑-1-基)嘧啶-5-甲酸乙酯,再经过氢氧化锂在四氢呋喃–水混合溶剂中水解得到目标化合物。结果合成了目标化合物,经MS、1H-NMR确证了结构,质量分数为99.5%,本合成工艺的总收率为87%。结论该合成工艺具有操作简单、反应条件温和、成本低、产率和纯度较高等优点,适合工业化生产。