Project description:The effects of retinoic acid/vitamin A signal on the transcriptional profile of the ductus arteriosus during development were examined. Keywords: time course, development, response to a nutritional agent
Project description:The effects of retinoic acid/vitamin A signal on the transcriptional profile of the ductus arteriosus during development were examined. Experiment Overall Design: Total RNA samples were isolated from pooled tissues obtained from Wister rat embryos on embryonic day 19 and 21, and from neonates on the day of birth (n>=120). The RNA was converted to biotin-labeled cRNA, which was hybridized to Affymetrix RG_U34A microarray. The hybridization experiments were performed in duplicate.
Project description:Closure or patency of the ductus arteriosus is a critical event in neonatal life. We aimed to identify genes that are specifically expressed in the ductus arteriosus versus (the non-closing) aorta Gene expression profiling of laser-captured microdissected cells offers the opportunity to study gene expression profiles in cells of different embryonic origin Comparative microarray analysis of laser-capture dissected endothelial and smooth muscle cells of the rat ductus arteriosus and aorta at embryonic age E18 and E21.
Project description:The ductus arteriosus constricts after birth or hatching and eventually closes to terminate embryonic circulation. Chicken embryos have two long ductus arteriosus. Then the pulmonary artery-sided and descending aorta-sided ductus arteriosus have distinct functional characteristics, such as oxygen responsiveness. We used microarrays to elucidate the difference between the pulmonary artery-sided and descending aorta-sided ductus arteriosus in their transcriptional profiles.
Project description:Patent ductus arteriosus (PDA) is the third most common congenital heart disease and resulted from the persistence of ductal patency after birth. Ductus arteriosus closure involves functional and structural remodeling, controlled by many factors. The closure-related human plasma proteins are unknown. Here we for the first time demonstrate six key differential plasma proteins in the human PDA patients using proteomic technology and present a model to illustrate the constriction and closure of ductus arteriosus. We found that permanent closure might be regulated by the proteins related to platelet activation and coagulation cascades, complement mannan-binding-lectin, and other systemic signaling pathways. Our findings indicate that the differential proteins involved in these pathways may play key roles in the non-closure of the ductus arteriosus and may be developed as biomarkers for diagnosis. All those findings may be served as the basis of understanding the etiology and pathogenesis of PDA.
Project description:Comparison of gene expression levels in ductus arteriosus (DA) and aorta in full-term (21 days) neonates of Brown-Norway (BN) and Fischer344 (F344) rats We analyzed the fold difference between BN and F344 rats in ductus arteriosus in order to identify the down-regulated and up-regulated genes specifically in BN rat's DA. The differences in aorta was also examined for additional comparison. Total RNA was extracted from aorta and DA tissues from BN and F344 rat neonates one hour after delivery, and converted to biotin-labeled cRNAs that were hybridized to Affymetrix Rat Gene 1.0 ST Array.
