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The novel 36-amino acid peptide, apelin, is the endogenous ligand for the orphan receptor APJ. Apelin may play important roles in the regulation of the cardiovascular system and the hypothalamic-pituitary axis. It is a potent hypotensive agent and one of the most potent stimulators of cardiac contractility. In this study, we investigated the roles of apelin(More)
BACKGROUND Notch signaling is highly conserved in the metazoa and is critical for many cell fate decisions. Notch activation occurs following ligand binding to Notch extracellular domain. In vitro binding assays have identified epidermal growth factor (EGF) repeats 11 and 12 as the ligand binding domain of Drosophila Notch. Here we show that an internal(More)
Fibrosis, the hallmark of human injuries and diseases such as serious burns, is characterized by excessive collagen synthesis and myofibroblast accumulation. Transforming growth factor-β (TGF-β), a potent inducer of collagen synthesis, has been implicated in fibrosis in animals. In addition to TGF-β, fibroblast growth factor-inducible molecule 14 (Fn14) has(More)
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