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Expression of natriuretic peptide receptor A in the developing retina of the mouse
Pages: 591-598
Year: Issue:  5
Journal: Acta Anatomica Sinica

Keyword:  RetinaDevelopmentNatriuretic peptide receptor AImmunohistochemistryMouse;
Abstract: Objective Our purpose is to investigate the expression of natriuretic peptide receptor A (NPR-A) in the retina and to understand the NPR-A’ s functions during the mouse development .Methods Mice eyes were harvested from E16 ( embryonic day 16 ) to P90 ( postnatal day 90 ) . Total of 127 eyes were used in the study . Immunohistochemistries of NPR-A were carried out .Results During development , NPR-A was widely expressed in the retinal neurons .In the outer nuclear layer , NPR-A began to appear in the inner and outer projections of cone and rod cells at P7, but decreased at P14.From P30 afterward, it continued to express weakly .In the inner nuclear layer , NPR-A expressed in the dendrites of bipolar cells weakly from P 7 to adulthood , whereas no expression in horizontal cells .In the ganglion cell layer, NPR-A started highly to express in the ganglion cell bodies at E 16, and in the meantime, in the nerve fiber layer , ganglion cell axons , NPR-A was expressed highly from embryonic to adult .In the inner and outer plexiform layers, NPR-A was highly expressed at P14, but decreased gradually after P30.In addition, NPR-A also widely expressed in the inner protrusions of Müller cells.Conclusion NPR-A participates in the development of the retina , and may be the key molecule in the developing retinal neurons .Moreover, it plays an important regulatory role in the functional activity of Müller cells .
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