Soil contaminated with heavy metals cadmium （Cd） and lead （Pb） is hard to be remediated. Phytoremediation may be a feasible method to remove toxic metals from soil, but there are few suitable plants which can hype...Soil contaminated with heavy metals cadmium （Cd） and lead （Pb） is hard to be remediated. Phytoremediation may be a feasible method to remove toxic metals from soil, but there are few suitable plants which can hyperaccumulate metals. In this study, Cd and Pb accumulation by four plants including sunflower （Helianthus annuus L.）, mustard （Brassicajuncea L.）, alfalfa （Medicago sativa L.）, ricinus （Ricinus communis L.） in hydroponic cultures was compared. Results showed that these plants could phytoextract heavy metals, the ability of accumulation differed with species, concentrations and categories of heavy metals. Values of BCF （bioconcentration factor） and TF （translocation factor） indicated that four species had dissimilar abilities of phytoextraction and transportation of heavy metals. Changes on the biomass of plants, pH and Eh at different treatments revealed that these four plants had distinct responses to Cd and Pb in cultures. Measurements should be taken to improve the phytoremediation of sites contaminated with heavy metals, such as pH and Eh regulations, and so forth.展开更多
目的评估老年人群肌少症不同筛查量表的应用价值。方法2021年11月至2022年5月于社区招募年龄在60岁及以上老年人512例,测量患者握力、步速、骨骼肌质量指数等指标,按照亚洲肌少症工作组建议的诊断标准进行肌少症诊断。通过问卷方式由研...目的评估老年人群肌少症不同筛查量表的应用价值。方法2021年11月至2022年5月于社区招募年龄在60岁及以上老年人512例,测量患者握力、步速、骨骼肌质量指数等指标,按照亚洲肌少症工作组建议的诊断标准进行肌少症诊断。通过问卷方式由研究者对研究对象开展一对一的访谈,内容包括一般情况:出生日期、年龄、身高、体质量等;采用SARC-F问卷评分量表、SARC-Calf评分量表、MSRA-5、MSRA-7问卷等评估受试者的情况。采用受试者操作特征曲线(receiver operating characteristic curve,ROC)比较不同筛查量表对肌少症的应用价值。结果共入组512例老年受试者,按照亚洲肌少症工作组诊断标准,将入组老年人群分为肌少症组和非肌少症组。肌少症患病率为5.1%。通过ROC曲线评估,SARC-F量表对肌少症发生具有较好的识别能力,曲线下面积(area under the curve,AUC)为0.739,敏感性为0.750,特异性为0.716。SARC-Calf评分量表较SARC-F问卷评分量表具更高的应用价值,其AUC为0.817,敏感性为0.958,特异性为0.587。结论社区招募的老年人群的肌少症患病率为5.1%。在临床研究中,SARC-Calf评分量表是筛查肌少症简便易行的方法,具有较好的敏感性和特异性,可用于大规模人群肌少症筛查。展开更多
目的:在社区医院就诊者中探讨臂式电子血压计与台式水银血压计的测量值有无差异。方法:连续纳入太阳宫社区卫生服务中心门诊就诊患者200例,分别用臂式电子血压计和台式水银血压计测量同侧上臂血压,比较两者测量的血压值。并对高血压、...目的:在社区医院就诊者中探讨臂式电子血压计与台式水银血压计的测量值有无差异。方法:连续纳入太阳宫社区卫生服务中心门诊就诊患者200例,分别用臂式电子血压计和台式水银血压计测量同侧上臂血压,比较两者测量的血压值。并对高血压、糖尿病、超重及肥胖患者的血压值差异进行分析比较。结果:电子与水银血压计的舒张压测量值差异无统计学意义(79.7±10.5 vs 79.8±10.2mmHg,P=0.96);电子血压计收缩压测量值显著高于水银血压计(140.7±18.5 vs 136.4±18.2mmHg,P<0.01),平均收缩压差值为4.4mmHg。糖尿病患者电子血压计收缩压和舒张压测量值均显著高于水银血压计(146.9±20.5 vs 142.5±20.4mmHg,P<0.05;79.6±11.7 vs 79.3±11.0mmHg,P<0.05);超重、肥胖患者电子血压计收缩压测量值均显著高于水银血压计(超重139.8±16.0 vs 134.9±14.7mmHg,P<0.05;肥胖145.9±16.9 vs 143.0±17.8mmHg,P<0.05)。结论:社区就诊人群中,糖尿病、高血压及肥胖者的电子血压计收缩压测量值高于水银血压计。2种血压计的收缩压测量值在测量误差允许范围内,臂式电子血压计可代替水银血压计用于血压测量。展开更多
基金Project supported by the National Natural Science Foundation of China(No.20477029,20337010)the National Basic Research Program(973)of China(No.2004CB18506).
文摘Soil contaminated with heavy metals cadmium （Cd） and lead （Pb） is hard to be remediated. Phytoremediation may be a feasible method to remove toxic metals from soil, but there are few suitable plants which can hyperaccumulate metals. In this study, Cd and Pb accumulation by four plants including sunflower （Helianthus annuus L.）, mustard （Brassicajuncea L.）, alfalfa （Medicago sativa L.）, ricinus （Ricinus communis L.） in hydroponic cultures was compared. Results showed that these plants could phytoextract heavy metals, the ability of accumulation differed with species, concentrations and categories of heavy metals. Values of BCF （bioconcentration factor） and TF （translocation factor） indicated that four species had dissimilar abilities of phytoextraction and transportation of heavy metals. Changes on the biomass of plants, pH and Eh at different treatments revealed that these four plants had distinct responses to Cd and Pb in cultures. Measurements should be taken to improve the phytoremediation of sites contaminated with heavy metals, such as pH and Eh regulations, and so forth.
文摘目的评估老年人群肌少症不同筛查量表的应用价值。方法2021年11月至2022年5月于社区招募年龄在60岁及以上老年人512例,测量患者握力、步速、骨骼肌质量指数等指标,按照亚洲肌少症工作组建议的诊断标准进行肌少症诊断。通过问卷方式由研究者对研究对象开展一对一的访谈,内容包括一般情况:出生日期、年龄、身高、体质量等;采用SARC-F问卷评分量表、SARC-Calf评分量表、MSRA-5、MSRA-7问卷等评估受试者的情况。采用受试者操作特征曲线(receiver operating characteristic curve,ROC)比较不同筛查量表对肌少症的应用价值。结果共入组512例老年受试者,按照亚洲肌少症工作组诊断标准,将入组老年人群分为肌少症组和非肌少症组。肌少症患病率为5.1%。通过ROC曲线评估,SARC-F量表对肌少症发生具有较好的识别能力,曲线下面积(area under the curve,AUC)为0.739,敏感性为0.750,特异性为0.716。SARC-Calf评分量表较SARC-F问卷评分量表具更高的应用价值,其AUC为0.817,敏感性为0.958,特异性为0.587。结论社区招募的老年人群的肌少症患病率为5.1%。在临床研究中,SARC-Calf评分量表是筛查肌少症简便易行的方法,具有较好的敏感性和特异性,可用于大规模人群肌少症筛查。
文摘目的:在社区医院就诊者中探讨臂式电子血压计与台式水银血压计的测量值有无差异。方法:连续纳入太阳宫社区卫生服务中心门诊就诊患者200例,分别用臂式电子血压计和台式水银血压计测量同侧上臂血压,比较两者测量的血压值。并对高血压、糖尿病、超重及肥胖患者的血压值差异进行分析比较。结果:电子与水银血压计的舒张压测量值差异无统计学意义(79.7±10.5 vs 79.8±10.2mmHg,P=0.96);电子血压计收缩压测量值显著高于水银血压计(140.7±18.5 vs 136.4±18.2mmHg,P<0.01),平均收缩压差值为4.4mmHg。糖尿病患者电子血压计收缩压和舒张压测量值均显著高于水银血压计(146.9±20.5 vs 142.5±20.4mmHg,P<0.05;79.6±11.7 vs 79.3±11.0mmHg,P<0.05);超重、肥胖患者电子血压计收缩压测量值均显著高于水银血压计(超重139.8±16.0 vs 134.9±14.7mmHg,P<0.05;肥胖145.9±16.9 vs 143.0±17.8mmHg,P<0.05)。结论:社区就诊人群中,糖尿病、高血压及肥胖者的电子血压计收缩压测量值高于水银血压计。2种血压计的收缩压测量值在测量误差允许范围内,臂式电子血压计可代替水银血压计用于血压测量。
