Evidence map›Paper›PMID 35769612›Full record

ArticleMethodsX2022

Separation and detection of D-/L-serine by conventional HPLC.

Hiroki Shikanai, Kazuko Ikimura, Momoko Miura, Tsugumi Shindo, Akane Watarai, Takeshi Izumi

Abstract read
In one paragraph

Article in MethodsX, 2022. 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. Article
  2. Review
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

6 authors.

Hiroki ShikanaiDepartment of Pharmacology, Faculty of Pharmaceutical Sciences, Health Science University of Hokkaido, Japan.
Kazuko IkimuraEicom Corporation, Research and Development, Japan.
Momoko MiuraSchool of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Japan.
Tsugumi ShindoDepartment of Pharmacology, Faculty of Pharmaceutical Sciences, Health Science University of Hokkaido, Japan.
Akane WataraiDepartment of Pharmacology, Faculty of Pharmaceutical Sciences, Health Science University of Hokkaido, Japan.
Takeshi IzumiDepartment of Pharmacology, Faculty of Pharmaceutical Sciences, Health Science University of Hokkaido, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

D-serine has a role as an endogenous allosteric agonist of N-methyl-D-aspartate (NMDA) receptor in the mammalian brain. In this study, we present a detailed description of our method that measures D-/L-serine by using conventional high performance liquid chromatography (HPLC). • We reacted D-serine and L-serine with ortho-phthalaldehyde (OPA) and N-acetyl-L-cysteine (NAC) to form diastereomeric isoindole derivatives, then we separated and detected them by conventional reversed phase HPLC with electrochemical detector (ECD). • We present typical measurement data of rat brain homogenate as an example of a convenient, appropriate method for measuring brain concentrations of D-serine. • Since many peaks appear in biological samples, we confirmed that the peaks were derived from serine by treating the sample with D-amino oxidase and catalase to decompose D-serine. As a results, one peak disappeared, suggesting that it is derived from D-serine.

Indexed as

D-amino acidDetectionDiastereomer methodD-/L-serineN-acetyl-L-cysteine (NAC)Ortho-phthalaldehyde (OPA)Reversed phase HPLC with ECDSeparation

Identifiers

PMID35769612
PMCPMC9234346

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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.