Objective： It is revealed that circulating fibrocytes are elevated in patients/animals with cardiac fibrosis, and this review aims to provide an introduction to circulating fibrocytes and their role in cardiac fibros...Objective： It is revealed that circulating fibrocytes are elevated in patients/animals with cardiac fibrosis, and this review aims to provide an introduction to circulating fibrocytes and their role in cardiac fibrosis.Data Sources： This review is based on the data from 1994 to present obtained from PubMed.The search terms were ＆quot;circulating fibrocytes＆quot; and ＆quot;cardiac fibrosis＆quot;.Study Selection： Articles and critical reviews, which are related to circulating fibrocytes and cardiac fibrosis, were selected.Results： Circulating fibrocytes, which are derived from hematopoietic stem cells, represent a subset of peripheral blood mononuclear cells exhibiting mixed morphological and molecular characteristics ofhematopoietic and mesenchymal cells （CD34＋/CD45＋/collagen I＋）.They can produce extracellular matrix and many cytokines.It is shown that circulating fibrocytes participate in many fibrotic diseases, including cardiac fibrosis.Evidence accumulated in recent years shows that aging individuals and patients with hypertension, heart failure, coronary heart disease, and atrial fibrillation have more circulating fibrocytes in peripheral blood and/or heart tissue, and this elevation of circulating fibrocytes is correlated with the degree of fibrosis in the hearts.Conclusions： Circulating fibrocytes are effector cells in cardiac fibrosis.展开更多
目的:探讨CD34、Ⅰ型胶原(collagenⅠ,COLⅠ)、CXCR4在支气管肺发育不良(bronchopulmonary dysplasia,BPD)的表达及临床意义。方法:利用流式细胞仪(flow cytometry,FCM)检测61例早产儿生后1、3、5、7、28 d外周血中CD34、COLⅠ、CXCR4...目的:探讨CD34、Ⅰ型胶原(collagenⅠ,COLⅠ)、CXCR4在支气管肺发育不良(bronchopulmonary dysplasia,BPD)的表达及临床意义。方法:利用流式细胞仪(flow cytometry,FCM)检测61例早产儿生后1、3、5、7、28 d外周血中CD34、COLⅠ、CXCR4的表达,并比较CD34、COLⅠ、CXCR4在BPD组及非BPD组间表达的差异。结果:BPD组患儿较非BPD组患儿CXCR4在生后第1天有明显增高[(61.4±13.37)%]。随着日龄的增大,BPD患儿COLⅠ水平在第28天达到高峰[3.42(2.87,4.98)%],而CD34、CXCR4水平降至最低[(0.67±0.25)%;(31.9±13.48)%]。重复测量设计方差分析显示,日龄的增大及CD34、COLⅠ、CXCR4水平的变化对BPD的发生存在交互作用(F=77.66,P=0.000)。ROC曲线分析显示,COLⅠ的曲线下面积(area under the curve,AUC)为0.867,高于CD34、CXCR4,且当COLⅠ值为1.3%时,敏感度为69.7%,特异度为86%。不同时间点BPD各组测量值比较均有统计学意义(P=0.000)。结论:循环纤维细胞的COLⅠ水平高表达及CD34、CXCR4水平持续降低与BPD的发生密切相关。展开更多
基金the grant from the National Natural Science Foundation of China
文摘Objective： It is revealed that circulating fibrocytes are elevated in patients/animals with cardiac fibrosis, and this review aims to provide an introduction to circulating fibrocytes and their role in cardiac fibrosis.Data Sources： This review is based on the data from 1994 to present obtained from PubMed.The search terms were ＆quot;circulating fibrocytes＆quot; and ＆quot;cardiac fibrosis＆quot;.Study Selection： Articles and critical reviews, which are related to circulating fibrocytes and cardiac fibrosis, were selected.Results： Circulating fibrocytes, which are derived from hematopoietic stem cells, represent a subset of peripheral blood mononuclear cells exhibiting mixed morphological and molecular characteristics ofhematopoietic and mesenchymal cells （CD34＋/CD45＋/collagen I＋）.They can produce extracellular matrix and many cytokines.It is shown that circulating fibrocytes participate in many fibrotic diseases, including cardiac fibrosis.Evidence accumulated in recent years shows that aging individuals and patients with hypertension, heart failure, coronary heart disease, and atrial fibrillation have more circulating fibrocytes in peripheral blood and/or heart tissue, and this elevation of circulating fibrocytes is correlated with the degree of fibrosis in the hearts.Conclusions： Circulating fibrocytes are effector cells in cardiac fibrosis.
文摘目的:探讨CD34、Ⅰ型胶原(collagenⅠ,COLⅠ)、CXCR4在支气管肺发育不良(bronchopulmonary dysplasia,BPD)的表达及临床意义。方法:利用流式细胞仪(flow cytometry,FCM)检测61例早产儿生后1、3、5、7、28 d外周血中CD34、COLⅠ、CXCR4的表达,并比较CD34、COLⅠ、CXCR4在BPD组及非BPD组间表达的差异。结果:BPD组患儿较非BPD组患儿CXCR4在生后第1天有明显增高[(61.4±13.37)%]。随着日龄的增大,BPD患儿COLⅠ水平在第28天达到高峰[3.42(2.87,4.98)%],而CD34、CXCR4水平降至最低[(0.67±0.25)%;(31.9±13.48)%]。重复测量设计方差分析显示,日龄的增大及CD34、COLⅠ、CXCR4水平的变化对BPD的发生存在交互作用(F=77.66,P=0.000)。ROC曲线分析显示,COLⅠ的曲线下面积(area under the curve,AUC)为0.867,高于CD34、CXCR4,且当COLⅠ值为1.3%时,敏感度为69.7%,特异度为86%。不同时间点BPD各组测量值比较均有统计学意义(P=0.000)。结论:循环纤维细胞的COLⅠ水平高表达及CD34、CXCR4水平持续降低与BPD的发生密切相关。
