Objective This study aims to assess the status of successful aging （SA） in longevity areas in China and explore multiple factors associated with SA among the young-old and oldest-old. Methods A total of 2296 elderly...Objective This study aims to assess the status of successful aging （SA） in longevity areas in China and explore multiple factors associated with SA among the young-old and oldest-old. Methods A total of 2296 elderly people aged 65 and older were interviewed in the longevity areas sub-sample of the Chinese Longitudinal Healthy Longevity Survey （CLHLS） in 2012. Baseline assessments included a researcher-administered questionnaire, physical examination, and laboratory testing. A logistic regression model was used to identify factors associated with SA. Results The prevalence of SA was 38.81% in the CLHLS in 2012. There were significant differences between ages groups, with SA compromising 56.85% among _〉65 years group and 20.31% among 〉100 years group （X2trend=126.73, P〈O.01）. The prevalence of SA among females was 33.59%, which was significantly lower than that among males （45.58%） （X2gender=33.65, P〈0.05）. In the regression analysis, having anemia ~OR=0.744, 95% CI： 0.609-0.910）, poor lifestyle （OR=0.697, 95% CI： 0.568-0.854）, poor sleep quality （OR=0.558, 95% CI： 0.456-0.682）, and central obesity （OR=0.684, 95% CI： 0.556-0.841） were the main factors associated with SA. The promoting SA rate decreased as age increased, and the group of 65-79 years had higher odds than the other age group. Conclusion Preventing central obesity, improving sleep quality and promoting healthy lifestyle may contribute to achieve SA among the elderly.展开更多
目的建立高效液相色谱-离子阱-飞行时间串联质谱法(high performance liquid chromatography-ion trap-time of flight tandem mass spectrometry,HPLC-MS-IT-TOF)定性分析蜂蜜中的未知黄酮类物质的分析方法。方法通过查阅相关资料,推...目的建立高效液相色谱-离子阱-飞行时间串联质谱法(high performance liquid chromatography-ion trap-time of flight tandem mass spectrometry,HPLC-MS-IT-TOF)定性分析蜂蜜中的未知黄酮类物质的分析方法。方法通过查阅相关资料,推断该未知物可能是黄酮类物质,用质谱检测可知与其他干扰物质是否分离。在确定干扰物质与未知黄酮进行分离后,可以得到未知黄酮类物质的分子离子峰和三级质谱碎片,根据碎片离子,推导出了裂解途径,并使用分子式软件预测了未知黄酮类物质的分子式。结果综合实验结果,最后定性了蜂蜜中的未知黄酮类物质为"短叶松素",其分子式为C15H12O5。用超高效液相色谱-串联质谱(ultra performance liquid chromatography-tandem mass spectrometry,UPLC-MS/MS)将黄酮类未知物质与短叶松素标准品的保留时间、离子对m/z 271.06>253.10和m/z 271.06>191.00及离子比率进行比对,确证定性结果是准确的。结论本实验为蜂蜜中黄酮类未知物定性提供了一个有效的思路和方法。展开更多
基金supported by National Natural Science Foundation of China[81273160,71233001,71110107025]United Nations Population Fund and the United States National Institutes of Health[R01AG23627]
文摘Objective This study aims to assess the status of successful aging （SA） in longevity areas in China and explore multiple factors associated with SA among the young-old and oldest-old. Methods A total of 2296 elderly people aged 65 and older were interviewed in the longevity areas sub-sample of the Chinese Longitudinal Healthy Longevity Survey （CLHLS） in 2012. Baseline assessments included a researcher-administered questionnaire, physical examination, and laboratory testing. A logistic regression model was used to identify factors associated with SA. Results The prevalence of SA was 38.81% in the CLHLS in 2012. There were significant differences between ages groups, with SA compromising 56.85% among _〉65 years group and 20.31% among 〉100 years group （X2trend=126.73, P〈O.01）. The prevalence of SA among females was 33.59%, which was significantly lower than that among males （45.58%） （X2gender=33.65, P〈0.05）. In the regression analysis, having anemia ~OR=0.744, 95% CI： 0.609-0.910）, poor lifestyle （OR=0.697, 95% CI： 0.568-0.854）, poor sleep quality （OR=0.558, 95% CI： 0.456-0.682）, and central obesity （OR=0.684, 95% CI： 0.556-0.841） were the main factors associated with SA. The promoting SA rate decreased as age increased, and the group of 65-79 years had higher odds than the other age group. Conclusion Preventing central obesity, improving sleep quality and promoting healthy lifestyle may contribute to achieve SA among the elderly.
文摘目的建立高效液相色谱-离子阱-飞行时间串联质谱法(high performance liquid chromatography-ion trap-time of flight tandem mass spectrometry,HPLC-MS-IT-TOF)定性分析蜂蜜中的未知黄酮类物质的分析方法。方法通过查阅相关资料,推断该未知物可能是黄酮类物质,用质谱检测可知与其他干扰物质是否分离。在确定干扰物质与未知黄酮进行分离后,可以得到未知黄酮类物质的分子离子峰和三级质谱碎片,根据碎片离子,推导出了裂解途径,并使用分子式软件预测了未知黄酮类物质的分子式。结果综合实验结果,最后定性了蜂蜜中的未知黄酮类物质为"短叶松素",其分子式为C15H12O5。用超高效液相色谱-串联质谱(ultra performance liquid chromatography-tandem mass spectrometry,UPLC-MS/MS)将黄酮类未知物质与短叶松素标准品的保留时间、离子对m/z 271.06>253.10和m/z 271.06>191.00及离子比率进行比对,确证定性结果是准确的。结论本实验为蜂蜜中黄酮类未知物定性提供了一个有效的思路和方法。
