Evidence map›Paper›PMID 33127503›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2021

Cerebrospinal fluid findings in neurological diseases associated with COVID-19 and insights into mechanisms of disease development.

Otávio Melo Espíndola, Carlos Otávio Brandão, Yago Côrtes Pinheiro Gomes, Marilda Siqueira, Cristiane Nascimento Soares, Marco Antônio Sales Dantas Lima, Ana Claudia Celestino Bezerra Leite, Guilherme Torezani, Abelardo Queiroz Campos Araujo, Marcus Tulius Teixeira Silva

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04775784 (Determination of SARS-Cov-2 Virus in Central Nervous System), which is not on this map. Cited by 66 papers, 12 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 12 pooled it
8.0field-weighted citation impact, top 2% 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.

NCT04775784 unknown statusnot on this map

Determination of SARS-Cov-2 Virus in Central Nervous System

TypeobservationalSponsorIRCCS San RaffaeleRan2020 to 2023Enrolled300ConditionsCOVID-19 Testing, CNS Disease, CNS InfectionArmsDetermination of SARS-CoV2 presence in CNS
3 · Its place in the literature

Who cites it

66 citing papers in PubMed, 12 syntheses or guidelines pooled it, 106 citations in OpenAlex.

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  19. Utility of Protein Markers in COVID-19 Patients.International journal of molecular sciences · 2025
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6 more citing papers are in PubMed but not listed here.

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

10 authors at 4 institutions in 1 country.

Otávio Melo EspíndolaLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil. Electronic address: otavio.espindola@ini.fiocruz.br.
Carlos Otávio BrandãoLaboratório Neurolife, Rio de Janeiro, Brazil.
Yago Côrtes Pinheiro GomesLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil.
Marilda SiqueiraLaboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil.
Cristiane Nascimento SoaresDepartamento de Doenças Infecto Parasitárias, Hospital Federal dos Servidores do Estado (HSE/RJ), Rio de Janeiro, Brazil.
Marco Antônio Sales Dantas LimaLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil.
Ana Claudia Celestino Bezerra LeiteLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil.
Guilherme TorezaniUniversidade Federal Fluminense (UFF), Niterói, Brazil.
Abelardo Queiroz Campos AraujoLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil.
Marcus Tulius Teixeira SilvaLaboratório de Pesquisa Clínica em Neuroinfecções, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro, Brazil; Serviço de Neurologia, Complexo Hospitalar de Niterói, Niterói, Brazil.
Fundação Oswaldo Cruz · BRBrazilian Institute of Neuropsychology and Behaviour · BRHospital Federal dos Servidores do Estado · BRUniversidade Federal Fluminense · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo analyze the cerebrospinal fluid (CSF) of patients with SARS-CoV-2 infection and neurological manifestations to provide evidence for the understanding of mechanisms associated with central nervous system (CNS) involvement in COVID-19.

methodsPatients (n = 58) were grouped according to their main neurological presentation: headache (n = 14); encephalopathy (n = 24); inflammatory neurological diseases, including meningoencephalitis (n = 4), acute myelitis (n = 3), meningitis (n = 2), acute disseminated encephalomyelitis (ADEM) (n = 2), encephalitis (n = 2), and neuromyelitis optica (n = 1); and Guillain-Barré syndrome (n = 6). Data regarding age, sex, cerebrovascular disease, and intracranial pressure were evaluated in combination with CSF profiles defined by cell counts, total protein and glucose levels, concentration of total Tau and neurofilament light chain (NfL) proteins, oligoclonal band patterns, and detection of SARS-CoV-2 RNA.

resultsCSF of patients with inflammatory neurological diseases was characterized by pleocytosis and elevated total protein and NfL levels. Patients with encephalopathy were mostly older men (mean age of 61.0 ± 17.6 years) with evidence of cerebrovascular disease. SARS-CoV-2 RNA in CSF was detected in 2 of 58 cases: a patient with refractory headache, and another patient who developed ADEM four days after onset of COVID-19 symptoms. Three patients presented intrathecal IgG synthesis, and four had identical oligoclonal bands in CSF and serum, indicating systemic inflammation.

conclusionPatients with neurological manifestations associated with COVID-19 had diverse CSF profiles, even within the same clinical condition. Our findings indicate a possible contribution of viral replication on triggering CNS infiltration by immune cells and the subsequent inflammation promoting neuronal injury.

Indexed as

SARS-CoV-2AdultAgedCOVID-19FemaleHumansInflammationMaleMiddle AgedNervous System DiseasesCerebrospinal fluidCOVID-19Neurofilament light proteinOligoclonal bandsSARS-CoV-2Total Tau protein

Identifiers

PMID33127503
PMCPMC7591319
OpenAlexW3096431816

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Registered trials

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.