The effect of local injection of atrial (ANP), brain (BNP) and C-type (CNP) natriuretic peptides and an ANP antagonist (HS-142-1) on testicular microcirculation and vasomotion was studied using laser Doppler flowmetry. The natriuretic peptides were also localized immunohistochemically within the testis. ANP, BNP-32, CNP-22 and CNP-53 all caused a dose-related increase in testicular blood flow. The effect of ANP was blocked by concomitant injection of the ANP antagonist. Immunoreactive (ir) CNP and ir BNP were found in Leydig cells whereas ir ANP was observed in the seminiferous tubules. It is suggested that the natriuretic peptides could play a role in local regulation of the testicular microcirculation.
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Mayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA
Zakeri, Rosita
Sangaralingham, S. Jeson
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Mayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA
Sangaralingham, S. Jeson
Sandberg, Sharon M.
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Mayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA
Sandberg, Sharon M.
Heublein, Denise M.
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Mayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA
Heublein, Denise M.
Scott, Christopher G.
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Mayo Clin, Div Biostat, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA
Scott, Christopher G.
Burnett, John C., Jr.
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Mayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USAMayo Clin, Cardiorenal Res Lab, Div Cardiovasc Dis, Rochester, MN 55905 USA