Cell adhesive junction is specialized intercellular struc-ture composed of cell adhesion proteins. They are essential to connect adjacent heart muscle cell and make heart contraction effectively and properly. Clini-ca...Cell adhesive junction is specialized intercellular struc-ture composed of cell adhesion proteins. They are essential to connect adjacent heart muscle cell and make heart contraction effectively and properly. Clini-cal and genetic studies have revealed close relationship between cell adhesive proteins and the occurrence of various cardiomyopathies. Here we will review recent development on the disease phenotype, potential cel-lular and molecular mechanism related to cell adhesion molecules, with particular disease pathogenesis learned from genetic manipulated murine models.展开更多
The difference in the atrial organizational structure between patients with atrial fibrillation (AF) and those with sinus rhythm was investigated.In order to analyze the rationality in explaining the electrocardiogram...The difference in the atrial organizational structure between patients with atrial fibrillation (AF) and those with sinus rhythm was investigated.In order to analyze the rationality in explaining the electrocardiogram (ECG) characteristics of AF with statistics data or tissue remodeling model,and the logical relationship between the hypothesis of pulmonary veins (PV) muscle sleeves and that of multi wavelets in mechanism of AF,we examined the expression of collagen volume fraction of type I (CVF-I ) with picrosirius red staining,connexin 40 (Cx40) by immunohistochemistry,and intercalated disc (ID) using transmission electron microscope in atrial tissue.The results showed that there was significant difference in the expression of CVF-I (t=3.827,P<0.01),Cx40 (t=4.21,P<0.01),and groups of the ID that keeping the electrical transmission and atrial electrical coupling synchronization (t=15.116,P<0.001),but no significant difference was found in total IDs (t=0.611,P=0.543) between patients with AF and those with sinus rhythm.The quantitative differences in the tissue remodeling could not explain the ECG characteristics of AF.The number of normal IDs and abnormal distribution are the structural basis to trigger and maintain atrial electrical remodeling,and induce and maintain AF.Such histological reconstruction supports the hypothesis of multi wavelets and can also explain ECG features.展开更多
基金Supported by American Heart Association Scientist Development Grant,No.N2080068W.W.Smith Charitable Trust Foundation Grant(H1204)
文摘Cell adhesive junction is specialized intercellular struc-ture composed of cell adhesion proteins. They are essential to connect adjacent heart muscle cell and make heart contraction effectively and properly. Clini-cal and genetic studies have revealed close relationship between cell adhesive proteins and the occurrence of various cardiomyopathies. Here we will review recent development on the disease phenotype, potential cel-lular and molecular mechanism related to cell adhesion molecules, with particular disease pathogenesis learned from genetic manipulated murine models.
文摘The difference in the atrial organizational structure between patients with atrial fibrillation (AF) and those with sinus rhythm was investigated.In order to analyze the rationality in explaining the electrocardiogram (ECG) characteristics of AF with statistics data or tissue remodeling model,and the logical relationship between the hypothesis of pulmonary veins (PV) muscle sleeves and that of multi wavelets in mechanism of AF,we examined the expression of collagen volume fraction of type I (CVF-I ) with picrosirius red staining,connexin 40 (Cx40) by immunohistochemistry,and intercalated disc (ID) using transmission electron microscope in atrial tissue.The results showed that there was significant difference in the expression of CVF-I (t=3.827,P<0.01),Cx40 (t=4.21,P<0.01),and groups of the ID that keeping the electrical transmission and atrial electrical coupling synchronization (t=15.116,P<0.001),but no significant difference was found in total IDs (t=0.611,P=0.543) between patients with AF and those with sinus rhythm.The quantitative differences in the tissue remodeling could not explain the ECG characteristics of AF.The number of normal IDs and abnormal distribution are the structural basis to trigger and maintain atrial electrical remodeling,and induce and maintain AF.Such histological reconstruction supports the hypothesis of multi wavelets and can also explain ECG features.
