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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1985-4-2
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pubmed:abstractText |
A comparative study of the noradrenaline storing vesicles in vas deferens from ox and rat was performed. Microsomal fractions were subjected to density gradient centrifugation. In rat, noradrenaline and dopamine beta-hydroxylase were mainly present in the upper fractions of the gradient, which is consistent with the predominance of light (small dense-core) vesicles in this species. In ox, noradrenaline, dopamine and dopamine beta-hydroxylase were found in the gradient in a bimodal distribution. This is consistent with the presence of about equal numbers of small and large dense-core vesicles in this species. On the other hand, chromogranin A, immunologically related proteins and enkephalin-like immunoreactivity were only present in the dense (large dense-core) vesicle population. In order to study the capability of light and dense vesicles to synthesize noradrenaline we "pulse-labelled" ox vasa deferentia with [3H]tyrosine. Already 3.5 min after the pulse both types of vesicles contained [3H]noradrenaline and [3H]dopamine. During longer "chase" periods the amount of [3H]dopamine gradually declined. We conclude that dense (large dense-core) vesicles contain chromogranin A, immunologically related proteins and enkephalin-like immunoreactivity whereas light (small dense-core) vesicles are devoid of these components. Both types of vesicles contain dopamine beta-hydroxylase and can synthesize noradrenaline from dopamine under in vivo conditions.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
|
pubmed:issn |
0306-4522
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
13
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
921-31
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6527783-Animals,
pubmed-meshheading:6527783-Catecholamines,
pubmed-meshheading:6527783-Cattle,
pubmed-meshheading:6527783-Cell Fractionation,
pubmed-meshheading:6527783-Dopamine beta-Hydroxylase,
pubmed-meshheading:6527783-Enkephalin, Methionine,
pubmed-meshheading:6527783-Male,
pubmed-meshheading:6527783-Norepinephrine,
pubmed-meshheading:6527783-Rats,
pubmed-meshheading:6527783-Sympathetic Nervous System,
pubmed-meshheading:6527783-Synaptic Vesicles,
pubmed-meshheading:6527783-Vas Deferens
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pubmed:year |
1984
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pubmed:articleTitle |
Biochemical and functional properties of large and small dense-core vesicles in sympathetic nerves of rat and ox vas deferens.
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pubmed:publicationType |
Journal Article,
In Vitro,
Research Support, Non-U.S. Gov't
|