Evidence map›Paper›PMID 27363702›Full record

ArticlePsychopharmacology2016

Betaine enhances antidepressant-like, but blocks psychotomimetic effects of ketamine in mice.

Jen-Cheng Lin, Mei-Yi Lee, Ming-Huan Chan, Yi-Chyan Chen, Hwei-Hsien Chen

Abstract read
PubMed Publisher
In one paragraph

Article in Psychopharmacology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.6field-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

19 citing papers in PubMed, 38 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

5 authors at 3 institutions in 1 country.

Jen-Cheng LinGraduate Institute of Medical Sciences, National Defense Medical Center, 161, Section 6, Minquan East. Road., Neihu District, Taipei, 11453, Taiwan.
Mei-Yi LeeDepartment of Pharmacology and Toxicology, Tzu Chi University, 701, Section 3, Chung-Yang Road, Hualien, 97004, Taiwan.
Ming-Huan ChanInstitute of Neuroscience, National Chengchi University, 64, Sec. 2, ZhiNan Road, Wenshan District, Taipei City, 11605, Taiwan.
Yi-Chyan ChenGraduate Institute of Medical Sciences, National Defense Medical Center, 161, Section 6, Minquan East. Road., Neihu District, Taipei, 11453, Taiwan. yichyanc@gmail.com.
Hwei-Hsien ChenGraduate Institute of Medical Sciences, National Defense Medical Center, 161, Section 6, Minquan East. Road., Neihu District, Taipei, 11453, Taiwan. hwei@nhri.org.tw.
National Defense Medical Center · TWTzu Chi University · TWNational Chengchi University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ketamine is emerging as a new hope against depression, but ketamine-associated psychotomimetic effects limit its clinical use. An adjunct therapy along with ketamine to alleviate its adverse effects and even potentiate the antidepressant effects might be an alternative strategy. Betaine, a methyl derivative of glycine and a dietary supplement, has been shown to have antidepressant-like effects and to act like a partial agonist at the glycine site of N-methyl-D-aspartate receptors (NMDARs). Accordingly, betaine might have potential to be an adjunct to ketamine treatment for depression. The antidepressant-like effects of ketamine and betaine were evaluated by forced swimming test and novelty suppressed feeding test in mice. Both betaine and ketamine produced antidepressant-like effects. Furthermore, we determined the effects of betaine on ketamine-induced antidepressant-like and psychotomimetic behaviors, motor incoordination, hyperlocomotor activity, and anesthesia. The antidepressant-like responses to betaine combined with ketamine were stronger than their individual effects. In contrast, ketamine-induced impairments in prepulse inhibition, novel object recognition test, social interaction, and rotarod test were remarkably attenuated, whereas ketamine-induced hyperlocomotion and loss of righting reflex were not affected by betaine. These findings revealed that betaine could enhance the antidepressant-like effects, yet block the psychotomimetic effects of ketamine, suggesting that betaine can be considered as an add-on therapy to ketamine for treatment-resistant depression and suitable for the treatment of depressive symptoms in patients with schizophrenia.

Indexed as

DepressionAnimalsAntidepressive AgentsBehavior, AnimalBetaineExcitatory Amino Acid AntagonistsHallucinogensKetamineMaleMicePrepulse InhibitionReceptors, N-Methyl-D-AspartateSwimmingAntidepressive AgentsBetaineExcitatory Amino Acid AntagonistsHallucinogensKetamineReceptors, N-Methyl-D-AspartateBehaviorDepressionNMDA receptorPrepulse inhibitionSchizophrenia

Identifiers

PMID27363702
OpenAlexW2465255523

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.