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HIF-1α is required for development of the sympathetic nervous system
R. Bohuslavova, R. Cerychova, F. Papousek, V. Olejnickova, M. Bartos, A. Görlach, F. Kolar, D. Sedmera, GL. Semenza, G. Pavlinkova,
Language English Country United States
Document type Journal Article, Research Support, Non-U.S. Gov't
NLK
Free Medical Journals
from 1915 to 6 months ago
Freely Accessible Science Journals
from 1915 to 6 months ago
PubMed Central
from 1915 to 6 months ago
Europe PubMed Central
from 1915 to 6 months ago
Open Access Digital Library
from 1915-01-01
Open Access Digital Library
from 1915-01-15
- MeSH
- Coronary Vessel Anomalies embryology MeSH
- Chromaffin Cells MeSH
- Adrenal Medulla embryology innervation MeSH
- Hypoxia-Inducible Factor 1, alpha Subunit physiology MeSH
- Coronary Vessels embryology MeSH
- Mice, Knockout MeSH
- Mice, Transgenic MeSH
- Mice MeSH
- Heart embryology innervation MeSH
- Ganglia, Sympathetic embryology growth & development MeSH
- Sympathetic Nervous System enzymology growth & development MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Mice MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
The molecular mechanisms regulating sympathetic innervation of the heart during embryogenesis and its importance for cardiac development and function remain to be fully elucidated. We generated mice in which conditional knockout (CKO) of the Hif1a gene encoding the transcription factor hypoxia-inducible factor 1α (HIF-1α) is mediated by an Islet1-Cre transgene expressed in the cardiac outflow tract, right ventricle and atrium, pharyngeal mesoderm, peripheral neurons, and hindlimbs. These Hif1aCKO mice demonstrate significantly decreased perinatal survival and impaired left ventricular function. The absence of HIF-1α impaired the survival and proliferation of preganglionic and postganglionic neurons of the sympathetic system, respectively. These defects resulted in hypoplasia of the sympathetic ganglion chain and decreased sympathetic innervation of the Hif1aCKO heart, which was associated with decreased cardiac contractility. The number of chromaffin cells in the adrenal medulla was also decreased, indicating a broad dependence on HIF-1α for development of the sympathetic nervous system.
Institute for Cell Engineering Johns Hopkins University School of Medicine Baltimore MD 21205
Institute of Physiology Czech Academy of Sciences 142 00 Prague Czechia
References provided by Crossref.org
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- $a The molecular mechanisms regulating sympathetic innervation of the heart during embryogenesis and its importance for cardiac development and function remain to be fully elucidated. We generated mice in which conditional knockout (CKO) of the Hif1a gene encoding the transcription factor hypoxia-inducible factor 1α (HIF-1α) is mediated by an Islet1-Cre transgene expressed in the cardiac outflow tract, right ventricle and atrium, pharyngeal mesoderm, peripheral neurons, and hindlimbs. These Hif1aCKO mice demonstrate significantly decreased perinatal survival and impaired left ventricular function. The absence of HIF-1α impaired the survival and proliferation of preganglionic and postganglionic neurons of the sympathetic system, respectively. These defects resulted in hypoplasia of the sympathetic ganglion chain and decreased sympathetic innervation of the Hif1aCKO heart, which was associated with decreased cardiac contractility. The number of chromaffin cells in the adrenal medulla was also decreased, indicating a broad dependence on HIF-1α for development of the sympathetic nervous system.
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