Evidence map›Paper›PMID 27308224›Full record

ArticleChemistryOpen2016

(13)C/(15)N-Enriched l-Dopa as a Triple-Resonance NMR Probe to Monitor Neurotransmitter Dopamine in the Brain and Liver Extracts of Mice.

Hisatsugu Yamada, Tetsuro Kameda, Yu Kimura, Hirohiko Imai, Tetsuya Matsuda, Shinsuke Sando, Akio Toshimitsu, Yasuhiro Aoyama, Teruyuki Kondo

Open access · goldAbstract read
In one paragraph

Article in ChemistryOpen, 2016. 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
0.8field-weighted citation impact, top 24% 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

2 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Article
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

9 authors at 3 institutions in 1 country.

Hisatsugu YamadaAdvanced Biomedical Engineering Research Unit Center for the Promotion of Interdisciplinary Education and Research Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan; Department of Life Systems Institute of Technology and Science Graduate School Tokushima University Tokushima 770-8506 Japan.
Tetsuro KamedaDepartment of Energy and Hydrocarbon Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan.
Yu KimuraDepartment of Energy and Hydrocarbon Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan; Research and Educational Unit of Leaders for Integrated Medical System Center for the Promotion of Interdisciplinary Education and Research Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan.
Hirohiko ImaiDepartment of Systems Science Graduate School of Informatics Kyoto University, Yoshida-honmachi, Sakyo-ku Kyoto 606-8501 Japan.
Tetsuya MatsudaDepartment of Systems Science Graduate School of Informatics Kyoto University, Yoshida-honmachi, Sakyo-ku Kyoto 606-8501 Japan.
Shinsuke SandoDepartment of Chemistry and Biotechnology The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan.
Akio ToshimitsuDepartment of Energy and Hydrocarbon Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan; Division of Multidisciplinary Chemistry Institute for Chemical Research Kyoto University, Gokanosho, Uji Kyoto 611-0011 Japan.
Yasuhiro AoyamaKyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan.
Teruyuki KondoAdvanced Biomedical Engineering Research Unit Center for the Promotion of Interdisciplinary Education and Research Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan; Department of Energy and Hydrocarbon Chemistry Graduate School of Engineering Kyoto University, Katsura, Nishikyo-ku Kyoto 615-8510 Japan.
Kyoto Katsura Hospital · JPKyoto University · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In an attempt to monitor μm-level trace constituents, we applied here (1)H-{(13)C-(15)N} triple-resonance nuclear magnetic resonance (NMR) to (13)C/(15)N-enriched l-Dopa as the inevitable precursor of the neurotransmitter dopamine in the brain. The perfect selectivity (to render endogenous components silent) and μm-level sensitivity (700 MHz spectrometer equipped with a cryogenic probe) of triple-resonance allowed the unambiguous and quantitative metabolic and pharmacokinetic analyses of administered l-Dopa/dopamine in the brain and liver of mice. The level of dopamine generated in the brain (within the range 7-76 μm, which covers the typical stimulated level of ∼30 μm) could be clearly monitored ex vivo, but was slightly short of the detection limit of a 7 T MR machine for small animals. This work suggests that μm-level trace constituents are potential targets of ex vivo monitoring as long as they contain N atom(s) and their appropriate (13)C/(15)N-enrichment is synthetically accessible.

Indexed as

dopamineL-dopametabolic analysisneurotransmittersstable isotope enrichmenttriple-resonance NMR

Identifiers

PMID27308224
PMCPMC4906467
OpenAlexW2227807225

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.