Effects of dark-rearing on the retinal dopaminergic system in the neonatal and postnatal guinea pig.
Identifieur interne : 000784 ( Ncbi/Checkpoint ); précédent : 000783; suivant : 000785Effects of dark-rearing on the retinal dopaminergic system in the neonatal and postnatal guinea pig.
Auteurs : A W Spira [Canada] ; D. ParkinsonSource :
- Brain research. Developmental brain research [ 0165-3806 ] ; 1991.
English descriptors
- KwdEn :
- MESH :
- chemical , biosynthesis : Dihydroxyphenylalanine, Dopamine.
- growth & development : Retina.
- metabolism : Animals, Newborn, Retina.
- physiology : Dark Adaptation.
- radiation effects : Retina.
- Animals, Guinea Pigs, Light.
Abstract
To appraise the extent of light responsivity of the retinal dopaminergic system in the early postnatal period, dopamine content (DA) of retinas of cycling-light-reared and dark-reared guinea pigs was determined. DA storage postnatally was suppressed in dark-reared animals. Their retinas responded to a brief light stimulus by rapidly increasing DOPA synthesis and DA utilization, but not to the extent of the response of cycling-light-reared animals. Dopaminergic retinal neurones depend on light stimulus for the complete development of some of their neurochemical characteristics.
PubMed: 1760868
Affiliations:
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pubmed:1760868Le document en format XML
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<author><name sortKey="Spira, A W" sort="Spira, A W" uniqKey="Spira A" first="A W" last="Spira">A W Spira</name>
<affiliation wicri:level="4"><nlm:affiliation>Department of Anatomy, University of Calgary, Alta., Canada.</nlm:affiliation>
<country xml:lang="fr">Canada</country>
<wicri:regionArea>Department of Anatomy, University of Calgary, Alta.</wicri:regionArea>
<orgName type="university">Université de Calgary</orgName>
<placeName><settlement type="city">Calgary</settlement>
<region type="state">Alberta</region>
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<author><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D" last="Parkinson">D. Parkinson</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Effects of dark-rearing on the retinal dopaminergic system in the neonatal and postnatal guinea pig.</title>
<author><name sortKey="Spira, A W" sort="Spira, A W" uniqKey="Spira A" first="A W" last="Spira">A W Spira</name>
<affiliation wicri:level="4"><nlm:affiliation>Department of Anatomy, University of Calgary, Alta., Canada.</nlm:affiliation>
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<author><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D" last="Parkinson">D. Parkinson</name>
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<series><title level="j">Brain research. Developmental brain research</title>
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<term>Animals, Newborn (metabolism)</term>
<term>Dark Adaptation (physiology)</term>
<term>Dihydroxyphenylalanine (biosynthesis)</term>
<term>Dopamine (biosynthesis)</term>
<term>Guinea Pigs</term>
<term>Light</term>
<term>Retina (growth & development)</term>
<term>Retina (metabolism)</term>
<term>Retina (radiation effects)</term>
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<keywords scheme="MESH" type="chemical" qualifier="biosynthesis" xml:lang="en"><term>Dihydroxyphenylalanine</term>
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<front><div type="abstract" xml:lang="en">To appraise the extent of light responsivity of the retinal dopaminergic system in the early postnatal period, dopamine content (DA) of retinas of cycling-light-reared and dark-reared guinea pigs was determined. DA storage postnatally was suppressed in dark-reared animals. Their retinas responded to a brief light stimulus by rapidly increasing DOPA synthesis and DA utilization, but not to the extent of the response of cycling-light-reared animals. Dopaminergic retinal neurones depend on light stimulus for the complete development of some of their neurochemical characteristics.</div>
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<orgName><li>Université de Calgary</li>
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