Evidence map›Paper›PMID 33550883›Full record

ArticlePharmaceutical biology2021

Eucalyptol ameliorates early brain injury after subarachnoid haemorrhage via antioxidant and anti-inflammatory effects in a rat model.

Gang Xu, Junsheng Guo, Chunming Sun

Open access · goldAbstract read
In one paragraph

Article in Pharmaceutical biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
3.4field-weighted citation impact, top 6% 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, 2 syntheses or guidelines pooled it, 42 citations in OpenAlex.

  1. Pooled it
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  7. Eucalyptol attenuates testicular ischemia-reperfusion injury in rats.Veterinary research forum : an international quarterly journal · 2025
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  16. Chemical and Biological Studies ofAntibiotics (Basel, Switzerland) · 2023
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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

3 authors at 1 institution in 1 country.

Gang XuDepartment of Neurosurgery, Liyang People's Hospital, Affiliated Hospital of Nantong University, Changzhou, China.ORCID https://orcid.org/0000-0001-6933-762X
Junsheng GuoDepartment of Neurosurgery, Liyang People's Hospital, Affiliated Hospital of Nantong University, Changzhou, China.
Chunming SunDepartment of Neurosurgery, Liyang People's Hospital, Affiliated Hospital of Nantong University, Changzhou, China.
Nantong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextAs the terpenoid oxide extracted from

objectiveTo evaluate the neuroprotective role of EUC in subarachnoid haemorrhage (SAH). MATERIALS AND

methodsSprague-Dawley rats were divided into 4 groups: sham group, SAH group, SAH + vehicle group, and SAH + EUC group. SAH was induced by endovascular perforation. In SAH + EUC group, 100 mg/kg EUC was administrated intraperitoneally at 1 h before SAH and 30 min after SAH, respectively. Neurological deficits were examined by modified Neurological Severity Scores (mNSS). The brain edoema was evaluated by wet-dry method. Neuronal apoptosis was detected by Nissl staining. The expression of Bcl-2, cleaved caspase-3, phospho-NF-κB p65, ionised calcium-binding adapter molecule-1 (Iba-1), nuclear factor erythroid-2 (Nrf-2), and haem oxygenase 1 (HO-1) were measured by Western blot. Expression of pro-inflammatory cytokines was detected by qRT-PCR. Oxidative stress markers were also measured.

resultsEUC markedly relieved brain edoema (from 81.22% to 78.33%) and neurological deficits [from 16.28 to 9.28 (24 h); from 12.50 to 7.58 (48 h)]. EUC reduced neuronal apoptosis, microglial activation, and oxidative stress. EUC increased the expression of HO-1 (1.15-fold), Nrf2 (1.34-fold) and Bcl-2 (1.17-fold) in the rats' brain tissue, and down-regulated the expressions of cleaved caspase-3 (41.09%), phospho-NF-κB p65 (14.38%) and pro-inflammatory cytokines [TNF-α (34.33%), IL-1β (50.40%) and IL-6 (59.13%)]. DISCUSSION AND

conclusionFor the first time, this study confirms that EUC has neuroprotective effects against early brain injury after experimental SAH in rats.

Indexed as

AnimalsAnti-Inflammatory AgentsAntioxidantsApoptosisBrain InjuriesCytokinesDisease Models, AnimalEucalyptolEucalyptusMaleNeuroprotective AgentsOxidative StressRatsRats, Sprague-DawleySubarachnoid HemorrhageAnti-Inflammatory AgentsAntioxidantsCytokinesEucalyptolNeuroprotective AgentsInflammationneurological functionNissl body

Identifiers

PMID33550883
PMCPMC8871613
OpenAlexW3128251823

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.