Evidence map›Paper›PMID 24463963›Full record

ArticleDiabetologia2014

Detection of free fatty acid receptor 1 expression: the critical role of negative and positive controls.

Charlott-Amelie Teutsch, Madhura Panse, Manuel Grundmann, Gabriele Kaiser, Evi Kostenis, Hans-Ulrich Häring, Susanne Ullrich

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Article in Diabetologia, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Review
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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

7 authors.

Charlott-Amelie TeutschDivision of Endocrinology, Diabetology, Vascular Medicine, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University of Tübingen, Otfried-Müller-Str. 10, 72076, Tübingen, Germany.
Madhura Panse
Manuel Grundmann
Gabriele Kaiser
Evi Kostenis
Hans-Ulrich Häring
Susanne Ullrich

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aims/hypothesisAdequate evaluation of protein expression is a crucial prerequisite for functional studies. Commonly used strategies comprise detection of proteins by specific antibodies using western blotting and immunohistochemical staining, or detection of mRNA by in situ hybridisation and RT-PCR. We evaluated the tools for the detection of free fatty acid receptor 1 (FFAR1) expression.

methodsCommercially available antibody preparations were used to detect endogenous expression of the FFAR1 receptor and this was compared with cell preparations deficient or overexpressing the mouse or human receptor. Concentrations of mRNA were evaluated by RT-PCR.

resultsAll insulin-secreting cells, INS-1E, Min6 and mouse islets showed specific expression of Ffar1 at the mRNA level. However, none of the commercially available antibodies specifically detected rat, mouse or human FFAR1. CONCLUSIONS/

interpretationProper positive and negative controls are an important prerequisite for the evaluation of FFAR1 expression.

Indexed as

AnimalsBlotting, WesternCell LineHumansIn Vitro TechniquesIslets of LangerhansMiceReceptors, G-Protein-CoupledReverse Transcriptase Polymerase Chain ReactionRNA, MessengerFFAR1 protein, humanReceptors, G-Protein-CoupledRNA, Messenger

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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.