Evidence map›Paper›PMID 19764982›Full record

ArticleBritish journal of pharmacology2009

Capsaicin affects brain function in a model of hepatic encephalopathy associated with fulminant hepatic failure in mice.

Y Avraham, N C Grigoriadis, I Magen, T Poutahidis, L Vorobiav, O Zolotarev, Y Ilan, R Mechoulam, E M Berry

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 18% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Dietary pattern in relation to the risk of Alzheimer's disease: a systematic review.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2019
    Pooled it
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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

9 authors at 3 institutions in 2 countries.

Y AvrahamDepartment of Metabolism and Human Nutrition, Braun School of Public Health, Hadassah-Hebrew University Medical School, Jerusalem, Israel. yosefa@md.huji.ac.il
N C Grigoriadis
I Magen
T Poutahidis
L Vorobiav
O Zolotarev
Y Ilan
R Mechoulam
E M Berry
Hebrew University of Jerusalem · ILAristotle University of Thessaloniki · GRHadassah Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeHepatic encephalopathy is a neuropsychiatric syndrome caused by liver failure. In view of the effects of cannabinoids in a thioacetamide-induced model of hepatic encephalopathy and liver disease and the beneficial effect of capsaicin (a TRPV1 agonist) in liver disease, we assumed that capsaicin may also affect hepatic encephalopathy. EXPERIMENTAL APPROACH: Fulminant hepatic failure was induced in mice by thioacetamide and 24 h later, the animals were injected with one of the following compound(s): 2-arachidonoylglycerol (CB(1), CB(2) and TRPV1 receptor agonist); HU308 (CB(2) receptor agonist), SR141716A (CB(1) receptor antagonist); SR141716A+2-arachidonoylglycerol; SR144528 (CB(2) receptor antagonist); capsaicin; and capsazepine (TRPV1 receptor agonist and antagonist respectively). Their neurological effects were evaluated on the basis of activity in the open field, cognitive function in an eight-arm maze and a neurological severity score. The mice were killed 3 or 14 days after thioacetamide administration. 2-arachidonoylglycerol and 5-hydroxytryptamine (5-HT) levels were determined by gas chromatography-mass spectrometry and high-performance liquid chromatography with electrochemical detection, respectively.

resultsCapsaicin had a neuroprotective effect in this animal model as shown by the neurological score, activity and cognitive function. The effect of capsaicin was blocked by capsazepine. Thioacetamide induced astrogliosis in the hippocampus and the cerebellum and raised brain 5-hydroxytryptamine levels, which were decreased by capsaicin, SR141716A and HU-308. Thioacetamide lowered brain 2-arachidonoylglycerol levels, an effect reversed by capsaicin.

conclusionsCapsaicin improved both liver and brain dysfunction caused by thioacetamide, suggesting that both the endocannabinoid and the vanilloid systems play important roles in hepatic encephalopathy. Modulation of these systems may have therapeutic value.

Indexed as

AnimalsArachidonic AcidsBrainCannabinoid Receptor ModulatorsCapsaicinCerebellumEndocannabinoidsFemaleGlyceridesHepatic EncephalopathyHippocampusLiverLiver Failure, AcuteMiceNeuroprotective AgentsReceptor, Cannabinoid, CB1Arachidonic AcidsCannabinoid Receptor ModulatorsCapsaicinEndocannabinoidsGlyceridesglyceryl 2-arachidonateNeuroprotective AgentsReceptor, Cannabinoid, CB1Receptor, Cannabinoid, CB2SerotoninThioacetamideTRPV1 protein, mouseTRPV Cation Channels

Identifiers

PMID19764982
PMCPMC2765608
OpenAlexW1501390385

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.