Evidence map›Paper›PMID 40197880›Full record

ArticleEinstein (Sao Paulo, Brazil)2025

Neuron-specific enolase and Tau protein as biomarkers for sepsis-associated delirium: a cross-sectional pilot study.

Agnes Araújo Sardinha Pinto, Maira Mello de Carvalho, Juliana Bahia Santos, Rebeca Souza da Silva, Hermes Vieira Barbeiro, Luz Marina Gómez Gómez, Ian Ward Abdalla Maia, Júlio Flávio Meirelles Marchini, Flávia Barreto Garcez, Thiago Junqueira Avelino-Silva and 4 more

Abstract read
In one paragraph

Article in Einstein (Sao Paulo, Brazil), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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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

0 citing papers in PubMed.

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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

14 authors.

Agnes Araújo Sardinha PintoDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-5895-7353
Maira Mello de CarvalhoDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0009-0007-3342-1599
Juliana Bahia SantosFaculdade de Medicina de Bauru, Universidade de São Paulo, Bauru, SP, Brazil.ORCID http://orcid.org/0009-0004-7428-3661
Rebeca Souza da SilvaFaculdade de Medicina de Bauru, Universidade de São Paulo, Bauru, SP, Brazil.ORCID http://orcid.org/0009-0001-7829-0402
Hermes Vieira BarbeiroDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-8209-4463
Luz Marina Gómez GómezDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-6426-3008
Ian Ward Abdalla MaiaDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-6125-7913
Júlio Flávio Meirelles MarchiniDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0002-2279-1945
Flávia Barreto GarcezDepartment of Medicine, Hospital Universitário, Universidade Federal de Sergipe, São Cristovão, SE, Brazil.ORCID http://orcid.org/0000-0001-6111-9521
Thiago Junqueira Avelino-SilvaLaboratório de Investigação Médica em Envelhecimento, Serviço de Geriatria, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0001-9347-0519
Lucas de Moraes SolerUniversidade Estadual de São Paulo "Julio de Mesquita Filho", Botucatu, SP, Brazil.ORCID http://orcid.org/0009-0002-4658-7567
Matheus Menão MochettiFaculdade de Medicina de Bauru, Universidade de São Paulo, Bauru, SP, Brazil.ORCID http://orcid.org/0000-0003-1529-2811
Heraldo Possolo de SouzaDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0003-2499-5674
Júlio Cesar Garcia AlencarDiscipline of Clinical Emergencies, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.ORCID http://orcid.org/0000-0001-5859-6060

Funding

RESEARCH TRAINING IN GERIATRIC MEDICINET32AG000212 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Alexander Keliimoeanu Smith · 1991 to 2026
$7.7M
NIA NIH HHS T32 AG000212
6 · The paper itself

Abstract

backgroundIn this study, Pinto et al. identified significantly higher levels of neuron-specific enolase and Tau protein in older patients with sepsis-associated delirium in the emergency department, suggesting the potential of these biomarkers as diagnostic tools in this population.

objectiveSepsis-associated delirium is a common cerebral manifestation in patients with sepsis, potentially caused by a combination of neuroinflammation and other neurophysiological disorders. This study investigated the expression of neuron-specific enolase and Tau protein as biomarkers in patients with sepsis-associated delirium. While neuron-specific enolase and Tau protein are known to be associated with brain injury, their diagnostic potential in patients with sepsis-associated delirium is not well understood.

methodsThis cross-sectional pilot study evaluated plasma levels of neuron-specific enolase and Tau protein in patients with delirium and sepsis to explore their potential for identifying sepsis in patients admitted to the emergency department.

resultsA total of 25 patients with delirium were analyzed, 56% of whom had sepsis. Patients with sepsis exhibited significantly higher neuron-specific enolase levels (2.7ng/mL [95%CI= 2.2-3.2] versus 1.3 ng/mL [95%CI= 0.8-2.5], p<0.003) and Tau protein levels (96.1pg/mL [95%CI= 77.0-111.3] versus 43.0pg/mL [95%CI= 31.2-84.5], p<0.003) compared to patients without sepsis. Neuron-specific enolase and Tau protein thresholds of >2.08ng/mL and >59.27pg/mL, respectively, demonstrated 90% specificity for identifying sepsis in patients.

conclusionNeuron-specific enolase and Tau protein levels were significantly higher in patients with sepsis than in those without, underscoring their potential ability to identify the infectious etiology of delirium in older patients admitted to emergency departments. Clinical Trials #RBR-233bct.

background■ Biomarkers of brain injury, such as neuron-specific enolase and Tau proteins, are higher in older patients with sepsis and delirium.

background■ Diagnosing sepsis in patients with delirium can be challenging.

background■ Early identification of sepsis is key to managing sepsisassociated delirium.

Indexed as

DeliriumPhosphopyruvate HydrataseSepsistau ProteinsAgedAged, 80 and overBiomarkersCross-Sectional StudiesEmergency Service, HospitalFemaleHumansMaleMiddle AgedPilot ProjectsReference ValuesSensitivity and SpecificityBiomarkersPhosphopyruvate Hydratasetau Proteins

Identifiers

PMID40197880
PMCPMC12014157

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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.