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Background: The gene NKX2-5 is a key transcription factor that plays an essential role in normal cardiac development. Although some recent studies have studied the role of polymorphisms in the NKX2-5 gene in congenital heart diseases (CHDs), the results were not consistent and remained uncertain. Therefore, we conduct a review of literature and investigate the association of genetic polymorphisms with CHDs.
Results: We selected seventeen studies regarding the association of NKX2-5 gene rs2277923 polymorphism with CHDs. Overall, in all the tested genetic models, the 63A > G polymorphism was not significantly associated with increased congenital heart defects risk. We used pooled odds ratios (OR) to calculate the association of CHDs with rs2277923 including allelic model: OR 1.00, 95% CI 0.82-1.21; homozygote model: OR 0.95, 95%CI 0.68-1.33, recessive model: OR 0.89 CI 0.70-1.13, heterozygote model: OR: 1.09, 95%CI 0.87-1.37, dominant model: OR 1.08 CI 0.82-1.42 and overdominant model: OR 1.17 CI 1.01-1.35. In addition, our analysis suggests that no publication bias exists in this meta-analysis.
Conclusions: Our findings suggested that 63A > G polymorphism in the NKX2-5 gene was not significantly associated with congenital heart defects. However, in the future, more studies with increased sample size are required that may provide us more definite conclusions.
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http://dx.doi.org/10.1186/s43044-021-00199-w | DOI Listing |
Front Physiol
December 2024
Department of Cell Physiology, The Jikei University School of Medicine, Tokyo, Japan.
FASEB J
December 2024
Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, Georgia, USA.
Neddylation is a highly conserved post-translational modification that plays critical roles in various cellular processes through the modulation of cullins and non-cullin substrates. While neddylation is known to be essential for embryonic development, tumor growth, and organogenesis of different tissues, its role in cardiogenesis remains unexplored. Here, we investigated the role of neddylation in early cardiac development by deleting the gene encoding a regulatory subunit of the NEDD8-specific E1 activating enzyme, Nae1, globally and in a heart-specific fashion via Nkx2-5.
View Article and Find Full Text PDFArterioscler Thromb Vasc Biol
December 2024
Department of Surgery (Cardiac), Yale School of Medicine, New Haven, CT. (P.R., B.J., A.H., G.L., W.L., R.A., G.T.).
Background: Smooth muscle cells (SMCs) of cardiac and neural crest origin contribute to the developing proximal aorta and are linked to disease propensity in adults.
Methods: We analyzed single-cell transcriptomes of aortic SMCs from adult mice to determine basal states and changes after disrupting TGFβ (transforming growth factor-β) signaling necessary for aortic homeostasis.
Results: A minority of Myh11 lineage-marked SMCs differentially expressed genes suggestive of embryological origin.
J Clin Invest
December 2024
Department of Genetics, Harvard Medical School, Boston, United States of America.
Heterozygous truncating variants in the sarcomere protein titin (TTN) are the most common genetic cause of heart failure. To understand mechanisms that regulate abundant cardiomyocyte TTN expression we characterized highly conserved intron 1 sequences that exhibited dynamic changes in chromatin accessibility during differentiation of human cardiomyocytes from induced pluripotent stem cells (hiPSC-CMs). Homozygous deletion of these sequences in mice caused embryonic lethality while heterozygous mice demonstrated allele-specific reduction in Ttn expression.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Cardiovascular Development Group, Department of Experimental Biology, University of Jaen, 23071 Jaen, Spain.
Cardiac development is a complex developmental process. The early cardiac straight tube is composed of an external myocardial layer and an internal endocardial lining. Soon after rightward looping, the embryonic heart becomes externally covered by a new epithelial lining, the embryonic epicardium.
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