The presence of ANP in rat peritoneal mast cells.

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 Res

journal_title

Cell research

authors

Martynova MG,Bystrova OA,Moiseeva OM,Evdonin AL,Kondratov KA,Medvedeva ND

doi

10.1038/sj.cr.7290350

keywords:

subject

Has Abstract

pub_date

2005-10-01 00:00:00

pages

811-6

issue

10

eissn

1001-0602

issn

1748-7838

journal_volume

15

pub_type

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