Evidence map›Paper›PMID 7477424›Full record

ArticleNaunyn-Schmiedeberg's archives of pharmacology1995

Subclassification of presynaptic alpha 2-adrenoceptors: alpha 2D-autoreceptors in mouse brain.

N Limberger, A U Trendelenburg, K Starke

Abstract read
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In one paragraph

Article in Naunyn-Schmiedeberg's archives of pharmacology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.7field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 29 citations in OpenAlex.

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  9. Effects of iodoproxyfan, a potent and selective histamine H3 receptor antagonist, on alpha 2 and 5-HT3 receptors.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 1995
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

N LimbergerPharmakologisches Institut, Freiburg, Germany.
A U Trendelenburg
K Starke
University of Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The study was devised to classify, by means of antagonist affinities, the presynaptic alpha 2-autoreceptors in mouse cerebral cortex in terms of alpha 2A, alpha 2B, alpha 2C and alpha 2D. A set of antagonists was chosen that was able to discriminate between the four subtypes. Slices of the cortex were preincubated with 3H-noradrenaline and then superfused and stimulated electrically. The stimulation periods used (4 pulses, 100 Hz) did not lead to alpha 2-autoinhibition as shown by the lack of an increase by rauwolscine of the evoked overflow of tritium. The alpha 2-selective agonists 5-bromo-6-(2-imidazolin-2-ylamino)-quinoxaline (UK 14,304) and alpha-methylnoradrenaline reduced the evoked overflow. All 10 antagonists shifted the concentration-inhibition curve of UK 14,304 to the right. Rauwolscine also shifted the concentration-inhibition curve of alpha-methylnoradrenaline to the right. pKd values of the antagonists were calculated from the shifts. The pKd values of rauwolscine against UK 14,304 and alpha-methylnoradrenaline were very similar (8.0 and 7.9, respectively). Comparison with antagonist affinities for prototypic native alpha 2 binding sites, alpha 2 binding sites in cells transfected with alpha 2 subtype genes, and previously classified presynaptic alpha 2-adrenoceptors--all taken from the literature--indicates that the alpha 2-autoreceptors in mouse brain cortex are alpha 2D. This is the first subtype determination of alpha 2-autoreceptors in the mouse. It supports the hypothesis that at least the majority of alpha 2-autoreceptors belong to the alpha 2A/D branch of the alpha 2-adrenoceptor tree.

Indexed as

Adrenergic alpha-AgonistsAnimalsAutoreceptorsBinding, CompetitiveBrainBrimonidine TartrateDose-Response Relationship, DrugMaleMiceMice, Inbred StrainsPresynaptic TerminalsQuinoxalinesReceptors, Adrenergic, alpha-2TetrodotoxinYohimbineAdrenergic alpha-AgonistsAutoreceptorsBrimonidine TartrateQuinoxalinesReceptors, Adrenergic, alpha-2TetrodotoxinYohimbine

Identifiers

PMID7477424
OpenAlexW2913644113

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.