Evidence map›Paper›PMID 36816539›Full record

ArticleJournal of pharmaceutical analysis2023

Untargeted and targeted mass spectrometry reveal the effects of theanine on the central and peripheral metabolomics of chronic unpredictable mild stress-induced depression in juvenile rats.

Yanru Zhu, Feng Wang, Jiatong Han, Yunli Zhao, Miao Yu, Mingyan Ma, Zhiguo Yu

Open access · goldAbstract read
In one paragraph

Article in Journal of pharmaceutical analysis, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

9 citing papers in PubMed, 20 citations in OpenAlex.

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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 at 2 institutions in 1 country.

Yanru ZhuLaboratory of Pharmaceutical Analysis, School of Pharmacy, Zhejiang Pharmaceutical University, Ningbo, Zhejiang, 315100, China.
Feng WangLaboratory of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Jiatong HanLaboratory of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Yunli ZhaoLaboratory of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Miao YuLaboratory of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Mingyan MaLaboratory of Pharmaceutical Analysis, School of Pharmacy, Zhejiang Pharmaceutical University, Ningbo, Zhejiang, 315100, China.
Zhiguo YuLaboratory of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, 110016, China.
Shenyang Pharmaceutical University · CNZhejiang Pharmaceutical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

l-theanine has been shown to have a therapeutic effect on depression. However, whether l-theanine has an excellent preventive effect on depression in children and adolescents and what its mechanism is have not been well explained. Given the complexity of the pathogenesis of depression, this study investigated the preventive effect and mechanism of l-theanine on depression in juvenile rats by combining serum and hippocampal metabolomic strategies. Behavioral tests, hippocampal tissue sections, and serum and hippocampal biochemical indexes were studied, and the results confirmed the preventive effect of l-theanine. Untargeted reversed-phase liquid chromatography-quadrupole-time-of-flight mass spectrometry and targeted hydrophilic interaction liquid chromatography-triple quadrupole mass spectrometry were developed to analyze the metabolism changes in the serum and hippocampus to screen for potential biomarkers related to l-theanine treatment. The results suggested that 28 abnormal metabolites in the serum and hippocampus that were considered as potential biomarkers returned to near-normal levels after l-theanine administration. These biomarkers were involved in various metabolic pathways, mainly including amino acid metabolism and lipid metabolism. The levels of amino acids and neurotransmitters in the phenylalanine, tryptophan, and glutamic acid pathways were significantly reduced after l-theanine administration compared with chronic unpredictable mild stress-induced rats. In summary, l-theanine had a significant preventive effect on depression and achieved its preventive results on depression by regulating various aspects of the body, such as amino acids, lipids, and inflammation. This research systematically analyzed the mechanism of l-theanine in preventing depression and laid the foundation for applying l-theanine to prevent depression in children and adolescents.

Indexed as

DepressionLiquid chromatography-mass spectrometryl-theanineMetabolomics

Identifiers

PMID36816539
PMCPMC9937789
OpenAlexW4304893166

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.