Document Detail

Three-dimensional and molecular analysis of the venous pole of the developing human heart.
MedLine Citation:
PMID:  20697026     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Various congenital malformations and many abnormal rhythms originate from the venous pole of the heart. Because of rapid changes during morphogenesis, lack of molecular and lineage data, and difficulties in presenting complex morphogenetic changes in the developing heart in a clear fashion, the development of this region in human has been difficult to grasp. METHODS AND RESULTS: To gain insight into the development of the different types of myocardium forming the venous pole of the human heart, we performed an immunohistochemical and 3-dimensional analysis of serial sections of human embryos ranging from 22 through 40 days of development. Three-dimensional models were prepared in a novel interactive portable format providing crucial spatial information and facilitating interpretation. As in the mouse, the systemic venous myocardium expresses the transcription factor TBX18, whereas the pulmonary venous myocardium expresses NKX2-5. In contrast to the mouse, a systemic venous sinus is identified upstream from the atrial chambers, albeit initially with nonmyocardial walls. From the outset, as in the mouse, the pulmonary vein empties to a chamber with atrial, rather than systemic venous, characteristics. Compared with the mouse, the vestibular spine is a more prominent structure. CONCLUSIONS: The similarities in gene expression in the distinctive types of myocardium surrounding the systemic and pulmonary venous tributaries in man and mouse permit extrapolation of the conclusions drawn from transgenic and lineage studies in the mouse to the human, showing that the systemic and pulmonary venous myocardial sleeves are derived from distinct developmental lineages.
Aleksander Sizarov; Robert H Anderson; Vincent M Christoffels; Antoon F M Moorman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-08-09
Journal Detail:
Title:  Circulation     Volume:  122     ISSN:  1524-4539     ISO Abbreviation:  Circulation     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-24     Completed Date:  2010-09-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  United States    
Other Details:
Languages:  eng     Pagination:  798-807     Citation Subset:  AIM; IM    
Heart Failure Research Center, Academic Medical Center, Amsterdam, the Netherlands.
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MeSH Terms
Heart / embryology*
Homeodomain Proteins / analysis
Pulmonary Veins / embryology*
Sarcoplasmic Reticulum Calcium-Transporting ATPases / analysis
T-Box Domain Proteins / analysis
Transcription Factors / analysis
Reg. No./Substance:
0/Homeodomain Proteins; 0/Nkx2-5 protein, mouse; 0/T-Box Domain Proteins; 0/Tbx18 protein, human; 0/Transcription Factors; EC Reticulum Calcium-Transporting ATPases

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