Dysregulated expression of microRNAs （miRNAs） in various tissues has been associated with a variety of diseases, including cancers. Here we demonstrate that miRNAs are present in the serum and plasma of humans and o...Dysregulated expression of microRNAs （miRNAs） in various tissues has been associated with a variety of diseases, including cancers. Here we demonstrate that miRNAs are present in the serum and plasma of humans and other animals such as mice, rats, bovine fetuses, calves, and horses. The levels of miRNAs in serum are stable, reproducible, and consistent among individuals of the same species. Employing Solexa, we sequenced all serum miRNAs of healthy Chinese subjects and found over 100 and 91 serum miRNAs in male and female subjects, respectively. We also identified specific expression patterns of serum miRNAs for lung cancer, colorectal cancer, and diabetes, providing evidence that serum miRNAs contain fingerprints for various diseases. Two non-small cell lung cancer-specific serum miRNAs obtained by Solexa were further validated in an independent trial of 75 healthy donors and 152 cancer patients, using quantitative reverse transcription polymerase chain reaction assays. Through these analyses, we conclude that serum miRNAs can serve as potential biomarkers for the detection of various cancers and other diseases.展开更多
This study evaluated the value of high-frequency ultrasonograpy for early detection of dorsal artery of foot in patients with type 2 diabetes mellitus （MD）. Eighty subjects including 40 patients with type 2 MD （T2D...This study evaluated the value of high-frequency ultrasonograpy for early detection of dorsal artery of foot in patients with type 2 diabetes mellitus （MD）. Eighty subjects including 40 patients with type 2 MD （T2DM group） and 40 healthy volunteers （NC group） were recruited. The intima-media thickness （IMT）, the inner diameter and the perfusion of dorsal artery of foot were measured by using high-frequency ultrasonograpy. Meanwhile, the parameters of vascular elasticity, including stiffness parameter （]3）, pressure-strain elastic modulus （Ep）, arterial compliance （AC）, augment index （AI）, and pulse wave conducting velocity （PWV]3） were detected by means of echo-tracking technique. The results showed that no significant difference was found in the IMT, systolic diameter （Ds）, diastolic diameter （Dd） and peak systolic velocity （PSV） between T2DM and NC groups. Ep and PWVβ were increased, and AC was decreased in T2DM group as compared with those in NC group with the differences being significant （P〈0.05 for all）. There was no significant difference in β and AI between T2DM and NC groups. It was concluded that high-frequency ultra- sonography in combination with echo-tracking technique is sensitive and non-invasive, and can be used for early detection of sclerosis of the lower extremity artery in patients with type 2 MD.展开更多
Background The International Association of Diabetes and Pregnancy Study Group （IADPSG） recommended new diagnostic criteria for gestational diabetes mellitus （GDM） after extensive analyses of the Hyperglycemia and...Background The International Association of Diabetes and Pregnancy Study Group （IADPSG） recommended new diagnostic criteria for gestational diabetes mellitus （GDM） after extensive analyses of the Hyperglycemia and Adverse Pregnancy Outcomes （HAPO） study. Unfortunately, there was no data from mainland of China in this study. We evaluated the feasibility of IADPSG criteria for GDM diagnosis in China. Methods A large prospective study was conducted. We reviewed medical records of a total of 25 674 pregnant women who underwent GDM screening and diagnosis between January 1, 2005 and December 31, 2012 in the Peking University First Hospital. The prevalence of gestational glucose metabolism abnormalities was calculated according to different cut off values defined by the National Diabetes Data Group （NDDG） or the IADPSG, and the incidence of adverse pregnancy outcomes related to GDM was analyzed. Results According to the cut off values of NDDG and IADPSG criteria, the prevalence of gestational glucose metabolism abnormalities was 8.4% and 18.9% （P 〈0.01） respectively, and the prevalence of cesarean section （52.5% vs. 46.0%, P 〈0.01）, macrosomia （7.5% vs. 6.3%, P 〈0.05）, neonatal hypoglycemia （1.6% vs. 1.0%, P 〈0.01）, and perinatal death （0.5% vs. 0.2%, P 〈0.01）; the prevalence was significantly lower when IADPSG criteria were applied. The prevalence of macrosomia, cesarean section, neonatal hypoglycemia, pregnancy induced hypertension, etc. was also higher in the GDM group than in the normal group. The prevalence of cesarean section （62.3%） and macrosomia （14.8%） was the highest in untreated mild GDM patients. Conclusions Our results indicated that treatment/intervention of women with GDM identified by IADPSG criteria was related to significantly lower risk of multiple adverse pregnancy outcomes. Such findings provide support for applying IADPSG criteria in China.展开更多
目的调查了解我国周围动脉闭塞性疾病(PAD)现患率及其相关影响因素。方法在我国7个大中城市15家三级甲等医院整群抽样入选50岁以上伴有一个以上危险因素的糖尿病患者以踝肱比(ABI)<0.9及脉波传导速度(PWV)>1400 cm/s 诊断 PAD,进...目的调查了解我国周围动脉闭塞性疾病(PAD)现患率及其相关影响因素。方法在我国7个大中城市15家三级甲等医院整群抽样入选50岁以上伴有一个以上危险因素的糖尿病患者以踝肱比(ABI)<0.9及脉波传导速度(PWV)>1400 cm/s 诊断 PAD,进行多因素回归分析其危险因素。结果调查的1397人中 PAD 的现患率为19.47%,其中男性占18.3%(122/664),女性占20.4%(150/733)。70岁以上 PAD 患病率上升到31.9%。PAD 与年龄、吸烟、收缩压、糖尿病病程及糖化血红蛋白均呈显著正相关。结论我国50岁以上糖尿病人群近五分之一患有 PAD。年龄、糖尿病病程、血糖水平和收缩期血压是 PAD 的危险因素。ABI、PWV 不仅是诊断 PAD 的手段,也可作为脑血管病(CVD)的预警指标。展开更多
基金Acknowledgments We thank Drs Fengyong Liu and Sheng Luan at UC Berkeley, USA, for their discussion and help with the writing of the manuscript. This work was supported by grants from the National Natural Science Foundation of China （no. 30225037, 30471991, 30570731）, National Basic Research Program of China （973 Program） （no. 2006CB503909, 2004CB518603）, the ＂111＂ Project, and the Natural Science Foundation of Jiangsu Province （no. BK2004082, BK2006714）.
文摘Dysregulated expression of microRNAs （miRNAs） in various tissues has been associated with a variety of diseases, including cancers. Here we demonstrate that miRNAs are present in the serum and plasma of humans and other animals such as mice, rats, bovine fetuses, calves, and horses. The levels of miRNAs in serum are stable, reproducible, and consistent among individuals of the same species. Employing Solexa, we sequenced all serum miRNAs of healthy Chinese subjects and found over 100 and 91 serum miRNAs in male and female subjects, respectively. We also identified specific expression patterns of serum miRNAs for lung cancer, colorectal cancer, and diabetes, providing evidence that serum miRNAs contain fingerprints for various diseases. Two non-small cell lung cancer-specific serum miRNAs obtained by Solexa were further validated in an independent trial of 75 healthy donors and 152 cancer patients, using quantitative reverse transcription polymerase chain reaction assays. Through these analyses, we conclude that serum miRNAs can serve as potential biomarkers for the detection of various cancers and other diseases.
文摘This study evaluated the value of high-frequency ultrasonograpy for early detection of dorsal artery of foot in patients with type 2 diabetes mellitus （MD）. Eighty subjects including 40 patients with type 2 MD （T2DM group） and 40 healthy volunteers （NC group） were recruited. The intima-media thickness （IMT）, the inner diameter and the perfusion of dorsal artery of foot were measured by using high-frequency ultrasonograpy. Meanwhile, the parameters of vascular elasticity, including stiffness parameter （]3）, pressure-strain elastic modulus （Ep）, arterial compliance （AC）, augment index （AI）, and pulse wave conducting velocity （PWV]3） were detected by means of echo-tracking technique. The results showed that no significant difference was found in the IMT, systolic diameter （Ds）, diastolic diameter （Dd） and peak systolic velocity （PSV） between T2DM and NC groups. Ep and PWVβ were increased, and AC was decreased in T2DM group as compared with those in NC group with the differences being significant （P〈0.05 for all）. There was no significant difference in β and AI between T2DM and NC groups. It was concluded that high-frequency ultra- sonography in combination with echo-tracking technique is sensitive and non-invasive, and can be used for early detection of sclerosis of the lower extremity artery in patients with type 2 MD.
文摘Background The International Association of Diabetes and Pregnancy Study Group （IADPSG） recommended new diagnostic criteria for gestational diabetes mellitus （GDM） after extensive analyses of the Hyperglycemia and Adverse Pregnancy Outcomes （HAPO） study. Unfortunately, there was no data from mainland of China in this study. We evaluated the feasibility of IADPSG criteria for GDM diagnosis in China. Methods A large prospective study was conducted. We reviewed medical records of a total of 25 674 pregnant women who underwent GDM screening and diagnosis between January 1, 2005 and December 31, 2012 in the Peking University First Hospital. The prevalence of gestational glucose metabolism abnormalities was calculated according to different cut off values defined by the National Diabetes Data Group （NDDG） or the IADPSG, and the incidence of adverse pregnancy outcomes related to GDM was analyzed. Results According to the cut off values of NDDG and IADPSG criteria, the prevalence of gestational glucose metabolism abnormalities was 8.4% and 18.9% （P 〈0.01） respectively, and the prevalence of cesarean section （52.5% vs. 46.0%, P 〈0.01）, macrosomia （7.5% vs. 6.3%, P 〈0.05）, neonatal hypoglycemia （1.6% vs. 1.0%, P 〈0.01）, and perinatal death （0.5% vs. 0.2%, P 〈0.01）; the prevalence was significantly lower when IADPSG criteria were applied. The prevalence of macrosomia, cesarean section, neonatal hypoglycemia, pregnancy induced hypertension, etc. was also higher in the GDM group than in the normal group. The prevalence of cesarean section （62.3%） and macrosomia （14.8%） was the highest in untreated mild GDM patients. Conclusions Our results indicated that treatment/intervention of women with GDM identified by IADPSG criteria was related to significantly lower risk of multiple adverse pregnancy outcomes. Such findings provide support for applying IADPSG criteria in China.
文摘目的调查了解我国周围动脉闭塞性疾病(PAD)现患率及其相关影响因素。方法在我国7个大中城市15家三级甲等医院整群抽样入选50岁以上伴有一个以上危险因素的糖尿病患者以踝肱比(ABI)<0.9及脉波传导速度(PWV)>1400 cm/s 诊断 PAD,进行多因素回归分析其危险因素。结果调查的1397人中 PAD 的现患率为19.47%,其中男性占18.3%(122/664),女性占20.4%(150/733)。70岁以上 PAD 患病率上升到31.9%。PAD 与年龄、吸烟、收缩压、糖尿病病程及糖化血红蛋白均呈显著正相关。结论我国50岁以上糖尿病人群近五分之一患有 PAD。年龄、糖尿病病程、血糖水平和收缩期血压是 PAD 的危险因素。ABI、PWV 不仅是诊断 PAD 的手段,也可作为脑血管病(CVD)的预警指标。
