Evidence map›Paper›PMID 33348553›Full record

ArticleInternational journal of molecular sciences2020

Hop Bitter Acids Increase Hippocampal Dopaminergic Activity in a Mouse Model of Social Defeat Stress.

Yasuhisa Ano, Shiho Kitaoka, Rena Ohya, Keiji Kondo, Tomoyuki Furuyashiki

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.1field-weighted citation impact, top 22% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Article
  3. Pharmacological Studies on Neuromodulatory Effects of Plant Extracts.International journal of molecular sciences · 2023
    Article
  4. Article
  5. Review
  6. 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

5 authors at 2 institutions in 1 country.

Yasuhisa AnoKirin Central Research Institute, Kirin Holdings Company Ltd., 1-13-5, Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan.ORCID 0000-0001-5957-8710
Shiho KitaokaDivision of Pharmacology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
Rena OhyaKirin Central Research Institute, Kirin Holdings Company Ltd., 1-13-5, Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan.
Keiji KondoKirin Central Research Institute, Kirin Holdings Company Ltd., 1-13-5, Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan.
Tomoyuki FuruyashikiDivision of Pharmacology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
Kirin (Japan) · JPKobe University · JP

Funding

CREST grant from AMED JP19gm0910012Grants-in-Aids for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology 18H05429 and 19H05021
6 · The paper itself

Abstract

As daily lifestyle is closely associated with mental illnesses, diet-based preventive approaches are receiving attention. Supplementation with hop bitter acids such as iso-α-acids (IAA) and mature hop bitter acids (MHBA) improves mood states in healthy older adults. However, the underlying mechanism remains unknown. Since acute oral consumption with IAA increases dopamine levels in hippocampus and improves memory impairment via vagal nerve activation, here we investigated the effects of chronic administration of hop bitter acids on the dopaminergic activity associated with emotional disturbance in a mouse model of repeated social defeat stress (R-SDS). Chronic administration of IAA and MHBA significantly increased dopaminergic activity based on the dopamine metabolite to dopamine ratio in the hippocampus and medial prefrontal cortex following R-SDS. Hippocampal dopaminergic activity was inversely correlated with the level of R-SDS-induced social avoidance with or without IAA administration. Therefore, chronic treatment with hop bitter acids enhances stress resilience-related hippocampal dopaminergic activity.

Indexed as

Social DefeatAffective SymptomsAnimalsBehavior, AnimalCyclohexenesDisease Models, AnimalDopamineHippocampusHumulusIsomerismMaleMemoryMiceMice, Inbred C57BLMice, Inbred ICRPlant ExtractsCyclohexenesDopaminehumulonPlant ExtractsTerpenesdepressiondopaminehippocampushop bitter acidsrepeated social defeat stress

Identifiers

PMID33348553
PMCPMC7766517
OpenAlexW3110692601

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.