Key result
NPR-C mRNA localizes to hypertrophic chondrocytes while NPR-B dominates proliferating chondrocytes in fetal mouse tibias.
The subtype switching of natriuretic peptide receptors during chondrocyte differentiation suggests their involvement in fetal skeletal growth and differentiation.
Hypothesis-generating for NPR roles in fetal chondrogenesis; does not inform human skeletal disorder management.
The roles of natriuretic peptides in cardiovascular homeostasis have been well characterized. A recent study revealed that mice lacking natriuretic peptide receptor-C (NPR-C) exhibit skeletal-overgrowth. We therefore, performed in situ hybridization with riboprobes to determine the localization of mRNAs for receptors for natriuretic peptides in the growth plate of the fetal mouse tibia The amount of mRNA for NPR-A was below the detectable level in the growth plate. The mRNA for NPR-B was detected predominantly in proliferating chondrocytes. By contrast, high levels of mRNA for NPR-C were found in hypertrophic chondrocytes. In other regions of the growth plate, the levels of mRNA for NPR-C were very low. The patterns of expression of mRNAs for NPR-B and NPR-C, namely, subtype switching during differentiation from proliferating chondrocytes to hypertrophic chondrocytes, suggest that these receptors might be involved in the growth and differentiation of the growth plate during fetal development in the mouse.
No takes yet. Share an insight, caveat, or question.
Yamashita et al. (2000) studied Fetal mouse tibia growth plate. In situ hybridization was evaluated on Localization of mRNAs for receptors for natriuretic peptides in the growth plate. High levels of mRNA for NPR-C were found in hypertrophic chondrocytes of the fetal mouse tibia, whereas NPR-B was detected predominantly in proliferating chondrocytes.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: