Abstract:
:Atrial natriuretic peptide (ANP) is an important component of the natriuretic peptide system. A great role in many regulatory systems is played by mast cells. Meanwhile involvement of these cells in ANP activity is poorly studied. In this work, we have shown the presence of ANP in rat peritoneal mast cells. Pure fraction of mast cells was obtained by separation of rat peritoneal cells on a Percoll density gradient. By Western blotting, two ANP-immunoreactive proteins of molecular masses of 2.5 kDa and 16.9 kDa were detected in lysates from these mast cells. Electron microscope immunogold labeling has revealed the presence of ANP-immunoreactive material in storage, secreting and released granules of mast cells. Our findings indicate the rat peritoneal mast cells to contain both ANP prohormone and ANP. These both peptides are located in mast cell secretory granules and released by mechanism of degranulation. It is discussed that many mast cell functions might be due to production of natriuretic peptides by these cells.
journal_name
Cell Resjournal_title
Cell researchauthors
Martynova MG,Bystrova OA,Moiseeva OM,Evdonin AL,Kondratov KA,Medvedeva NDdoi
10.1038/sj.cr.7290350keywords:
subject
Has Abstractpub_date
2005-10-01 00:00:00pages
811-6issue
10eissn
1001-0602issn
1748-7838journal_volume
15pub_type
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