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- W2507542152 abstract "Neuroglobin (Ngb) is a respiratory protein that is almost exclusively expressed in the vertebrate nervous system. Despite many years of research, the exact function and even the expression sites of Ngb are still a matter of debate. However, to investigate hypotheses surrounding the potential roles of Ngb, a detailed knowledge of its major and minor expression sites is indispensable. We have therefore evaluated Ngb expression by extensive bioinformatic analysis using publicly available transcriptome data (RNA-Seq). During mammalian brain development, we observed low embryonic expression of Ngb mRNA and an increase after birth, arguing against a role of Ngb in fetal hypoxia tolerance. In adult mouse brain, we found highest Ngb mRNA levels in the hypothalamus, where expression was up to 100-fold stronger than in cerebral cortex, cerebellum or hippocampus, as confirmed by qRT-PCR and Western blotting. High Ngb expression in the hypothalamus was found conserved in humans and other mammals. Thus, Ngb mRNA is expressed at a basal level in many mammalian brain regions, but shows distinctive regional peaks. RNA-Seq analysis further revealed only low levels of Ngb mRNA in retina and testes and no signal in standard tumor cell lines, thus raising questions concerning previous studies and functional hypotheses. In conclusion, this broad-scale expression study may point to distinct Ngb functions for high- and low-expressing cells and tissues and argues against a single, generic role of Ngb as an oxygen supplier or as an endogenous protectant in all nerve cells." @default.
- W2507542152 created "2016-09-16" @default.
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- W2507542152 date "2016-11-01" @default.
- W2507542152 modified "2023-10-03" @default.
- W2507542152 title "Critical re-evaluation of neuroglobin expression reveals conserved patterns among mammals" @default.
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- W2507542152 doi "https://doi.org/10.1016/j.neuroscience.2016.07.042" @default.
- W2507542152 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27542528" @default.
- W2507542152 hasPublicationYear "2016" @default.
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