rdf:type |
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lifeskim:mentions |
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pubmed:issue |
5 Pt 1
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pubmed:dateCreated |
1995-6-20
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pubmed:abstractText |
Actions of adenosine triphosphate (ATP) on neurons of the substantia gelatinosa (SG) were evaluated in spinal cord slices using tight-seal, whole-cell recordings. Bath-applied ATP activated a fast inward current and potentiated both glutamate-induced and synaptically evoked currents by acting through a purinergic receptor with the pharmacology of the P2 type. ATP also induced a delayed slow outward current and depressed synaptic currents that appeared to result from hydrolysis of ATP to adenosine. The inhibitory actions had features suggesting mediation by a P1-like purinergic receptor. Suramin, a putative P2 antagonist, inhibited ATP-induced fast inward currents but did not suppress synaptic currents evoked by dorsal root stimulation. It was concluded that in the SG, ATP released in synaptic regions acts as a synaptic modulator by augmenting excitatory amino acid actions and possibly by also producing a secondary adenosine inhibition.
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pubmed:grant |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0270-6474
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:volume |
15
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3357-65
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:7751915-Adenine Nucleotides,
pubmed-meshheading:7751915-Adenosine,
pubmed-meshheading:7751915-Adenosine Triphosphate,
pubmed-meshheading:7751915-Animals,
pubmed-meshheading:7751915-Cricetinae,
pubmed-meshheading:7751915-Electric Stimulation,
pubmed-meshheading:7751915-Electrophysiology,
pubmed-meshheading:7751915-Evoked Potentials,
pubmed-meshheading:7751915-Glutamic Acid,
pubmed-meshheading:7751915-Mesocricetus,
pubmed-meshheading:7751915-Neurons,
pubmed-meshheading:7751915-Patch-Clamp Techniques,
pubmed-meshheading:7751915-Ribonucleotides,
pubmed-meshheading:7751915-Spinal Cord,
pubmed-meshheading:7751915-Substantia Gelatinosa,
pubmed-meshheading:7751915-Synaptic Transmission,
pubmed-meshheading:7751915-Time Factors
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pubmed:year |
1995
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pubmed:articleTitle |
ATP modulation of synaptic transmission in the spinal substantia gelatinosa.
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pubmed:affiliation |
Department of Physiology, University of North Carolina at Chapel Hill 27599, USA.
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pubmed:publicationType |
Journal Article,
Comparative Study,
In Vitro,
Research Support, U.S. Gov't, P.H.S.
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