Effects of Prolonged Cold Storage on Purinergic and Adrenergic Components of Sympathetic Co-transmission in Isolated Canine Splenic Arteries.
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- Yang Xiao-Ping
- Department of Pharmacology, Shinshu University School of Medicine
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- Chiba Shigetoshi
- Department of Pharmacology, Shinshu University School of Medicine
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Abstract
The present study demonstrated the progressive inhibition by prolonged cold storage (4, 7 and 14 days at 4°C) on prejunctional and postjunctional functions of purinergic and adrenergic components of double-peaked vasoconstrictor responses to periarterial electrical nerve stimulation in the isolated canine splenic artery. After the cold storage for 4 days, the first phase constriction was markedly decreased, whereas the second response was not significantly modified. Furthermore, after the 7 days of cold storage, the first phase was substantially depressed at low frequencies, but at high frequencies, a low level of contractile responses was still observed. On the other hand, the second phase in the cold stored artery for 7 days largely remained at any used frequencies. Moreover, the 14 days of cold storage almost completely inhibited the vasoconstrictor responses to nerve stimulation. Tyramine-induced constrictions were progressively decreased in the stored-days dependent manner, although the ATP and the noradrenaline-induced one was not modified for 4 and 7 days of the cold storage. In conclusion, 1) the 4°C cold stored artery for 4 days may show preferential injury of its tyramine-dependent noradrenaline releasing mechanisms, whereas nerve excited ones might well remain; and 2) the prejunctional contractile response of purinergic transmission might be damaged more preferentially than that of adrenergic transmission within 7 days storage.
Journal
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- The Japanese Journal of Pharmacology
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The Japanese Journal of Pharmacology 81 (2), 163-169, 1999
The Japanese Pharmacological Society
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Details 詳細情報について
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- CRID
- 1390001204285684352
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- NII Article ID
- 10008196755
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- NII Book ID
- AA00691188
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- COI
- 1:CAS:528:DyaK1MXmvFahtLo%3D
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- ISSN
- 13473506
- 00215198
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- NDL BIB ID
- 4886635
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- PubMed
- 10591473
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed