Inhibitory Effect of Interferons on Contractive Activity of Bovine Mesenteric Lymphatic Vessels and Nodes.
Bull Exp Biol Med
; 164(2): 123-126, 2017 Dec.
Article
em En
| MEDLINE
| ID: mdl-29181669
ABSTRACT
We studied the effect of IFNα-2b and IFNß-1a on phasic and tonic contractions of isolated bovine mesenteric lymphatic vessels and nodes. IFNα-2b and IFNß-1a in concentrations of 250-1000 U/ml produced dose-dependent negative chronotropic and inotropic effects on spontaneous phasic contractions and tonus of lymphatic vessels and nodes. In de-endothelialized lymphatic vessels and nodes, IFNα-2b and IFNß-1a in the same concentrations had less pronounced inhibitory effect on spontaneous contraction and tonus. L-NAME (100 µM) and charybdotoxin (0.1 µM with 0.5 µM apamine) significantly attenuated the inhibitory effect of IFNα-2b on phasic and tonic contractions of lymph nodes. L-NAME (100 µM) and indomethacin (10 µM) significantly reduced the IFNα-2b-induced inhibitory effect on phasic and tonic contractions of lymph node. These results indicate that IFNα-2b and IFNß-1a have a pronounced inhibitory effect on the phasic and tonic contractions of bovine mesenteric lymphatic vessels and nodes. The responses are endothelium-dependent and are determined by production of NO and endothelium-dependent hyperpolarizing factor by endotheliocytes in lymphatic vessels and by production of NO and prostacyclin by endotheliocytes in the lymphatic nodes.
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Base de dados:
MEDLINE
Assunto principal:
Interferon-alfa
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Vasos Linfáticos
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Interferon beta-1a
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Linfonodos
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Contração Muscular
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Músculo Liso
Limite:
Animals
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article