open access

Vol 63, No 1 (2004)
SHORT COMMUNICATIONS
Published online: 2003-12-03
Submitted: 2012-02-06
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The distribution and influence of calcitonin gene-related peptide (CGRP) on the perfusion pressure in the isolated ovarian artery in the pig

Włodzimierz Markiewicz, Jerzy J. Jaroszewski, Beata Barszczewska, Tomasz Maślanka, Mariusz Majewski
Folia Morphol 2004;63(1):99-101.

open access

Vol 63, No 1 (2004)
SHORT COMMUNICATIONS
Published online: 2003-12-03
Submitted: 2012-02-06

Abstract

A moderate number of delicate CGRP-immunoreactive (CGRP-IR) varicose nerve terminals were found at the adventitia-media border of the sexually mature porcine ovarian artery by means of a routine single immunolabelling technique. Additionally, a pharmacological analysis was performed of the function fulfilled by α-CGRP and its C-terminal fragment (Tyr27) α-CGRP(27-37) in the porcine isolated ovarian artery, collected on days 8–13 of the oestrous cycle. It was shown that α-CGRP (10-8 M) caused a decrease in the perfusion pressure of the porcine isolated ovarian artery of 16% (p < 0.05), while (Tyr27) α-CGRP(27-37), added at the same concentration, reduced perfusion pressure by 13% (p > 0.05). Thus, we concluded that α-CGRP released from perivascular terminals may cause relaxation of the ovarian artery and, furthermore, that the potency of this action is dependent on the length of the chain of this peptide produced during the deactivation of the molecule by tissue proteases.

Abstract

A moderate number of delicate CGRP-immunoreactive (CGRP-IR) varicose nerve terminals were found at the adventitia-media border of the sexually mature porcine ovarian artery by means of a routine single immunolabelling technique. Additionally, a pharmacological analysis was performed of the function fulfilled by α-CGRP and its C-terminal fragment (Tyr27) α-CGRP(27-37) in the porcine isolated ovarian artery, collected on days 8–13 of the oestrous cycle. It was shown that α-CGRP (10-8 M) caused a decrease in the perfusion pressure of the porcine isolated ovarian artery of 16% (p < 0.05), while (Tyr27) α-CGRP(27-37), added at the same concentration, reduced perfusion pressure by 13% (p > 0.05). Thus, we concluded that α-CGRP released from perivascular terminals may cause relaxation of the ovarian artery and, furthermore, that the potency of this action is dependent on the length of the chain of this peptide produced during the deactivation of the molecule by tissue proteases.
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Keywords

alpha-CGRP; (Tyr27)alpha-CGRP(27-37); ovarian artery; perfusion

About this article
Title

The distribution and influence of calcitonin gene-related peptide (CGRP) on the perfusion pressure in the isolated ovarian artery in the pig

Journal

Folia Morphologica

Issue

Vol 63, No 1 (2004)

Pages

99-101

Published online

2003-12-03

Bibliographic record

Folia Morphol 2004;63(1):99-101.

Keywords

alpha-CGRP
(Tyr27)alpha-CGRP(27-37)
ovarian artery
perfusion

Authors

Włodzimierz Markiewicz
Jerzy J. Jaroszewski
Beata Barszczewska
Tomasz Maślanka
Mariusz Majewski

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