Evidence map›Paper›PMID 35749045›Full record

ArticleJournal of molecular neuroscience : MN2022

Serum Brain-Derived Neurotrophic Factor (BDNF) in COVID-19 Patients and its Association with the COVID-19 Manifestations.

Ali Asgarzadeh, Nasrin Fouladi, Vahid Asghariazar, Shahnaz Fooladi Sarabi, Hamid Afzoun Khiavi, Mahsa Mahmoudi, Elham Safarzadeh

Open access · bronzeAbstract read
In one paragraph

Article in Journal of molecular neuroscience : MN, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 3 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

20 citing papers in PubMed, 3 syntheses or guidelines pooled it, 27 citations in OpenAlex.

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  20. Impact of COVID-19 on Neuropsychiatric Disorders.Journal of clinical medicine · 2022
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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

7 authors at 1 institution in 1 country.

Ali AsgarzadehStudents Research Committee, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
Nasrin FouladiSchool of Medicine and Allied Medical Sciences, Ardabil University of Medical Sciences, Ardabil, Iran.
Vahid AsghariazarImmunology Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
Shahnaz Fooladi SarabiFellowship of Critical Care Medicine, Department of Anesthesiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
Hamid Afzoun KhiaviImmunology Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
Mahsa MahmoudiSchool of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
Elham SafarzadehDepartment of Microbiology, Parasitology, and Immunology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran. E.safarzadeh@arums.ac.ir.ORCID http://orcid.org/0000-0001-6160-8923
Ardabil University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

COVID-19 is a systematic disease that frequently implies neurological and non-neurological manifestations, predominantly by inducing hypoxia. Brain-derived neurotrophic factor (BDNF) is a key factor in regulating functions of nervous and respiratory systems and has been strongly related to hypoxia. Therefore, this study planned to investigate BDNF association with the COVID-19 manifestations especially neurological impairments and the infection-induced hypoxia. We enrolled sixty-four COVID-19 patients and twenty-four healthy individuals in this study. Patients were divided into two groups, with and without neurological manifestations, and their serum BDNF levels were measured by enzyme-linked immunosorbent assay (ELISA). COVID-19 patients had significantly lower BDNF levels than healthy individuals (p = 0.023). BDNF levels were significantly lower in patients with neurological manifestations compared to healthy individuals (p = 0.010). However, we did not observe a statistically significant difference in BDNF levels between patients with and without neurological manifestations (p = 0.175). BDNF's levels were significantly lower in patients with CNS manifestations (p = 0.039) and higher in patients with fever (p = 0.03) and dyspnea (p = 0.006). Secondly, BDNF levels have a significant negative association with oxygen therapy requirement (p = 0.015). These results strongly suggest the critical association between dysregulated BDNF and hypoxia in promoting COVID-19 manifestations, particularly neurological impairments.

Indexed as

COVID-19Brain-Derived Neurotrophic FactorEnzyme-Linked Immunosorbent AssayHumansHypoxiaBDNF protein, humanBrain-Derived Neurotrophic FactorBDNFCOVID-19DyspneaHypoxiaNeurological manifestations

Identifiers

PMID35749045
PMCPMC9243868
OpenAlexW4283387421

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.