广州市天河区大气污染与居民外周血P53蛋白关系研究

应用ＬＳＡＢ（链菌素－生物素标记法）检测了３组不同人群外周血中Ｐ５３蛋白表达的水平．结果表明，肿瘤病人组淋巴细胞ｐ５３蛋白表达水平最高，污染区居民组居中，正常对照组最低．经方差分析，３组差别有显著性意义（Ｐ＜０．０５）．     

红外分光光度法与焦磷酸重量法测定粉尘中游离二氧化硅的比较

本文对矿山粉尘和铸造粉尘的游离二氧化硅含量进行了红外分光光度法和焦磷酸重量法的对比测定。结果表明,红外法与重量法的结果之间有很好的相关性,其测定值在统计学上无显著性差异。两法测定值的相关回归方程:(?)=1.0001×-2.0610,r=0.947997。红外法的测定不受灰化的影响,对滤膜采集的粉尘中游离二氧化硅的含量测定是一简便、快速的方法,可较好地排除粉尘中难溶或不溶物质和无定形二氧化硅等因素的干扰,克服了重量法的不足。     

Cost-effectiveness of empagliflozin as a treatment for heart failure with reduced ejection fraction: an analysis from the Chinese healthcare perspective

BackgroundThe effect of empagliflozin on the cardiovascular outcome is consistent in heart failure with reduced ejection fraction (HFrEF) patients regardless of the presence or absence of diabetes. More evidence is needed regarding the cost-effectiveness of empagliflozin in HFrEF patients. This study sought to evaluate the economic outcomes of adding empagliflozin to the standard treatment for HFrEF patients from the perspective of the Chinese healthcare system, and thus to provide information for decision makers.MethodsBased on the EMPEROR-Reduced clinical trial and other published literature data, the direct medical costs and quality-adjusted life years (QALYs) of patients with HFrEF over a 15-year study period were simulated by a Markov model, and the incremental cost-effectiveness ratio (ICER) was calculated. The price of empagliflozin referred to the data released by Menet, the hospitalization expenses and utility values were derived from published studies in China. A one-way sensitivity analysis and probabilistic sensitivity analysis were conducted to evaluate the robustness of the model.ResultsThe results of the cost-effectiveness analysis showed that the cost of the combination arm was $5,220.98, with a utility of 4.86 QALYs, and the cost of the standard arm was $4,873.96, with a utility of 4.68 QALYs, which equated to an ICER of $1,893.59 per QALY gained. The subgroup analysis showed that patients with HFrEF and diabetes in empagliflozin group had a higher QALY (4.62 vs. 4.35) and a lower cost ($5,213.28 vs. $5,958.60) than standard group. The corresponding ICER for non-diabetic patients was $2,568.15 per QALY. Deterministic sensitivity analysis showed robust results. At the willingness-to-pay threshold of 3 times gross domestic product (GDP) per capita ($31,510.57), almost all of the scattered points in three scenarios were below the threshold line.ConclusionsAt a willingness-to-pay threshold of $31,510.57, adding empagliflozin to standard treatment is a very cost-effective option for HFrEF patients with or without diabetes in China.     

Rotenone,an environmental toxin,causes abnormal methylation of the mouse brain organoid's genome and ferroptosis

More and more reports have pointed out that rotenone, as an insecticide, has high neurotoxicity and reproductive toxicity to livestock and mammals. As a highly physiological correlation system of internal organs, quasi-organs have great potential in the fields of drug toxicity and efficacy test, toxicology research, developmental biology and so on. In this study, brain organs (mBOs) derived from mouse neural stem cells were used to investigate the effects of rotenone on the physiological activity and epigenetic modification of mBOs. At the same time, Rotenone could significantly stimulate the increase of the concentration of LPO, lactic acid and hydroxyl radical in mBOs, and inhibit the expression of neuronal marker Tuj1, CHAT, PAX6 and so on. Further analysis showed that Rotenonem could induce mitochondrial damage in mBOs. The results of qPCR and Western blot showed that Rotenone could up-regulate the expressions of ferroptosis promoting protein p53, Cox2 and so on, while inhibit the expressions of negative regulatory protein of ferroptosis GPX4, FTH1, SLC7A11. In addition, the results of RRBS-Seq sequencing showed that the methylation modification at DMR level in Rotenone-treated mBOs group was significantly higher than that in Ctrl group. The results of KEGG analysis showed that compared with Ctrl, the genes with hypermethylation of promoter and Genebody in Rotenone-treated mBOs were mainly located in the Neuro active ligand-receptor interaction signal transduction pathway. In summary, rotenone can significantly lead to abnormal methylation of mouse brain organs, and lead to the loss of normal physiological function of neurons by inducing ferroptosis.     

ERAS理念在腹腔镜子宫内膜癌全面分期手术围手术期应用的效果分析

目的探讨加速康复外科(enhanced recovery after surgery,ERAS)在腹腔镜子宫内膜癌全面分期手术围手术期应用的安全性和有效性。 方法回顾性分析2017年2月至2018年10月54例在甘肃省人民医院行腹腔镜子宫内膜癌全面分期手术患者,ERAS组和对照组各27例。ERAS组采用加速康复理念行围手术期处理,对照组给予外科常规处理措施,比较2组的术中、术后恢复情况及术后并发症等方面的差异。 结果ERAS组患者的术后住院时间、首次通气时间、引流管放置时间及术后腹腔引流量均明显低于对照组,差异有统计学意义(P<0.05);与对照组相比,ERAS组的术后并发症总发生率减少(P<0.05)。 结论ERAS技术用于腹腔镜子宫内膜癌全面分期手术围手术期优势突出,值得临床推广。     

消化性溃疡并发出血危险因素研究

目的 :通过对 36 8例消化性溃疡的分析 ,研究非甾体类消炎药 (NSAIDs)服用史、幽门螺杆菌 (HP)感染、性别、溃疡部位、内镜下溃疡大小、出血病史等因素对溃疡并发出血的影响及其相互关系。方法 :比较年龄、NSAIDs服用史、HP感染、性别、部位、内镜下溃疡大小、出血病史等因素对上消化道出血危险性的影响 ,以及上述因素之间的相互作用关系。结果 :服用NSAIDs患者中 ,出血占 74 % ,未出血占 2 6 % ,与上消化道危险性相关系数为 6 7相比 ,具有显著性差异 (P <0 0 1) ;溃疡出血随年龄增加而增加 ,出血患者中 ,5 0岁以下组为 2 7% ,6 0岁以下组为36 % ,超过 80岁组则为 79% ;对于出血的危险性 ,HP感染阳性率差别不大 (85 %vs 88% ,P >0 0 5 ) ,HP感染并不增加消化道出血的危险性 ,但与服用NSAIDs (OR =6 7)及年龄 (OR =3 6 )因素联合可明显增加出血危险性。其他因素与溃疡并发出血无明显关系。结论 :服用NSAIDs及年龄是Pu患者并发出血的重要原因 ,HP感染并不增加溃疡患者出血危险性 ,但服用NSAIDs及年龄等因素与溃疡出血危险密切相关     

Endoscopic features of esophageal high-grade intraepithelial neoplasia dominated by cytological atypia

Little is known about esophageal high-grade intraepithelial neoplasia dominated by cytological atypia (HGINc). We aimed to elucidate the endoscopic features of HGINc compared with esophageal high-grade intraepithelial neoplasia dominated by architectural atypia (HGINa). All patients pathologically diagnosed as esophageal high-grade intraepithelial neoplasia after endoscopic submucosal dissection at our center between January 2018 and December 2019 were included in this study. According to the pathological diagnosis, the patients were divided into two groups: HGINa group and HGINc group. Basic characteristics and endoscopic information were collected in detail. Data were analyzed statistically. Binary logistic regression was performed and a predictive model for HGINc was established. Then we evaluated its predictive value and built a nomogram for clinical application. A total of 175 patients were included in this study (126 with HGINa and 49 with HGINc). Among 228 lesions found in all patients, there were 148 HGINa and 80 HGINc. The independent relevant factors for HGINc were tobacco and alcohol usage, color, and gross type. To predict risk of HGINc, a three-factor model (TFM) was established with a highest area under curve (AUC) as 0.869 (95% CI, 0.852, 0.939). When the cut-off value was set as 0.3569184, the diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for HGINc was 81.14%, 88.75%, 77.03%, 67.62%, and 92.68%, respectively. HGINc differs greatly in endoscopic features from HGINa in our study. It’s important to reduce misdiagnosis that our model was established with good predictive value for clinical application.     

Alberta婴儿运动量表在高危儿运动发育监测中的应用研究

目的 观察和探讨Alberta婴儿运动量表(AIMS)在0~1岁高危儿运动监测中的应用.方法 选取0~1岁脑损伤高危儿300例,均接受AIMS量表和Peaboby运动发育粗大运动量表(PDMS2GM)的评估.对AIMS总分PDMS2GM量表总评分进行Spearman相关性分析,AIMS百分位与PDMS2GM量表评分根据Kappa值进行定性分析.并对两个量表检查时间进行比较.结果 AIMS总分与PDMS2GM量表总评分的相关系数为0.92(P<0.01);AIMS百分位与PDMS2GM量表总评分的相关系数为0.61.AIMS评估时间平均(10.5±3.2)min,PDMS2GM量表总评分评估时间平均(15.2±4.1)min(P<0.05).结论 AIMS与PDMS2GM量表总评分在0~1岁高危儿的运动发育监测与评估中具有较高的一致性,但是AIMS量表检测应用时间较短.     

4NQO诱导大鼠舌黏膜癌变过程中E-cad及PCNA的表达研究

目的 研究上皮钙依赖黏附蛋白(E-cad)和增殖细胞核抗原(PCNA)在大鼠口腔黏膜癌变过程中的表达变化,探讨其相关性.方法 采用4硝基喹啉一1一氧化物(4NQO)饮水法诱导大鼠舌癌变模型,免疫组织化学SP法检测82只大鼠舌癌变过程不同病理阶段组织中E-cad、PCNA蛋白的表达,分析E-cad与PCNA相关性.结果 在正常黏膜、上皮单纯增生、轻度上皮异常增生、中重度上皮异常增生和舌鳞状细胞癌组织中,E-cad的阳性率分别是100％、95.24％、92.86％、80.00％.68.75％,差异均有统计学意义(P＜0.05);PCNA的阳性率分别是9.52％,14.29％、35.71％,50％、56.25％,差异有统计学意义(x2=16.676,P<0.05).二者的蛋白表达呈负相关(r=-0.614,P＜0.01).结论 E-cad和PCNA有望成为舌黏膜癌变的生物标志物之一.     

快速动眼睡眠行为障碍疾病与阻塞性睡眠呼吸暂停综合征关系的多导睡眠监测特征研究

目的 研究快速动眼睡眠行为障碍疾病(rapid eye movement sleep behavior disorder,RBD)与阻塞性睡眠呼吸暂停综合征(obstructive sleep apnea syndrome,OSAS)的关系.方法 选取2012年1月1日至2013年10月31日就诊于首都医科大学宣武医院睡眠门诊且呼吸暂停低通气指数(apnea-hypopnea index,AHI)＞ 10/h的OSAS患者76人,其中OSAS合并RBD组28人,单纯OSAS组48人,所有受试者均行一整夜视频多导睡眠仪监测(video-polysomnography,vPSG)检查并对其呼吸参数进行比较分析.结果 RBD-OSAS组AHI、非快速动眼睡眠(non rapid eye movement,NREM)期AHI、快速动眼睡眠(rapid eye movement,REM)期AHI及低通气指数低于OSAS对照组,基础血氧饱和度及最低血氧饱和度则高于OSAS对照组,低通气最长时间及血氧饱和度低于90％的时间比OSAS对照组短.结论 RBD可能通过提高NREM期及REM期上气道肌肉紧张性活动对同时合并的OSAS发挥保护作用,从而为治疗OSAS提供新思路.