Diadenosine pentaphosphate (pentasodium) is an agonist and negative modulator of the P2X1 receptor, an important endogenous purine dinucleotide primarily sourced from platelets. This compound is known to negatively regulate dendritic growth and branching by activating both homologous and heterologous P2X1 receptors, resulting in a modest transient increase in intracellular calcium levels in dendritic growth cones. Diadenosine pentaphosphate demonstrates selective inhibition of dendrite growth in cultured hippocampal neurons while leaving axon growth unaffected. Its presence in secretory vesicles such as platelets and brain synaptosomes highlights its biological relevance in neurophysiological studies.
Diadenosine pentaphosphate (pentasodium) is an agonist and negative modulator of the P2X1 receptor, an important endogenous purine dinucleotide primarily sourced from platelets. This compound is known to negatively regulate dendritic growth and branching by activating both homologous and heterologous P2X1 receptors, resulting in a modest transient increase in intracellular calcium levels in dendritic growth cones. Diadenosine pentaphosphate demonstrates selective inhibition of dendrite growth in cultured hippocampal neurons while leaving axon growth unaffected. Its presence in secretory vesicles such as platelets and brain synaptosomes highlights its biological relevance in neurophysiological studies.
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