Evidence map›Paper›PMID 33946479›Full record

Observational studyInternational journal of molecular sciences2021

Metabolic Signatures Associated with Severity in Hospitalized COVID-19 Patients.

Judith Marín-Corral, Jose Rodríguez-Morató, Alex Gomez-Gomez, Sergi Pascual-Guardia, Rosana Muñoz-Bermúdez, Anna Salazar-Degracia, Purificación Pérez-Terán, Marcos I Restrepo, Olha Khymenets, Noemí Haro and 2 more

Abstract readObservational Study
In one paragraph

Observational study in International journal of molecular sciences, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

62 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  8. MTHFR allele and one-carbon metabolic profile predict severity of COVID-19.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  9. Article
  10. Metabolomic profiling of cannabis use and cannabis intoxication in humans.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
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2 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

12 authors.

Judith Marín-CorralCritical Care Department, Hospital del Mar, 08003 Barcelona, Spain.
Jose Rodríguez-MoratóIntegrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, IMIM-Institut Hospital del Mar d'Investigacions Mèdiques, 08003 Barcelona, Spain.ORCID 0000-0002-8133-9983
Alex Gomez-GomezIntegrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, IMIM-Institut Hospital del Mar d'Investigacions Mèdiques, 08003 Barcelona, Spain.ORCID 0000-0001-8172-1827
Sergi Pascual-GuardiaDivision of Pulmonary Diseases & Critical Care Medicine, University of Texas Health San Antonio, San Antonio, TX 78229, USA.ORCID 0000-0002-6567-0916
Rosana Muñoz-BermúdezCritical Care Department, Hospital del Mar, 08003 Barcelona, Spain.
Anna Salazar-DegraciaCritical Care Department, Hospital del Mar, 08003 Barcelona, Spain.ORCID 0000-0003-0133-1349
Purificación Pérez-TeránCritical Care Department, Hospital del Mar, 08003 Barcelona, Spain.
Marcos I RestrepoDivision of Pulmonary Diseases & Critical Care Medicine, University of Texas Health San Antonio, San Antonio, TX 78229, USA.ORCID 0000-0001-9107-3405
Olha KhymenetsIntegrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, IMIM-Institut Hospital del Mar d'Investigacions Mèdiques, 08003 Barcelona, Spain.
Noemí HaroIntegrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, IMIM-Institut Hospital del Mar d'Investigacions Mèdiques, 08003 Barcelona, Spain.
Joan Ramon MasclansCritical Care Department, Hospital del Mar, 08003 Barcelona, Spain.
Oscar J PozoIntegrative Pharmacology and Systems Neuroscience Research Group, Neurosciences Research Program, IMIM-Institut Hospital del Mar d'Investigacions Mèdiques, 08003 Barcelona, Spain.ORCID 0000-0002-1735-9728

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The clinical evolution of COVID-19 pneumonia is poorly understood. Identifying the metabolic pathways that are altered early with viral infection and their association with disease severity is crucial to understand COVID-19 pathophysiology, and guide clinical decisions. This study aimed at assessing the critical metabolic pathways altered with disease severity in hospitalized COVID-19 patients. Forty-nine hospitalized patients with COVID-19 pneumonia were enrolled in a prospective, observational, single-center study in Barcelona, Spain. Demographic, clinical, and analytical data at admission were registered. Plasma samples were collected within the first 48 h following hospitalization. Patients were stratified based on the severity of their evolution as moderate (N = 13), severe (N = 10), or critical (N = 26). A panel of 221 biomarkers was measured by targeted metabolomics in order to evaluate metabolic changes associated with subsequent disease severity. Our results show that obesity, respiratory rate, blood pressure, and oxygen saturation, as well as some analytical parameters and radiological findings, were all associated with disease severity. Additionally, ceramide metabolism, tryptophan degradation, and reductions in several metabolic reactions involving nicotinamide adenine nucleotide (NAD) at inclusion were significantly associated with respiratory severity and correlated with inflammation. In summary, assessment of the metabolomic profile of COVID-19 patients could assist in disease severity stratification and even in guiding clinical decisions.

Indexed as

MetabolomeAdultAgedBiomarkersCeramidesCOVID-19FemaleHospitalizationHumansKynurenineMaleMetabolomicsMiddle AgedProspective StudiesSARS-CoV-2Severity of Illness IndexBiomarkersCeramidesKynurenineTryptophanceramidesCOVID-19kynureninemetabolomicsseverity

Identifiers

PMID33946479
PMCPMC8124482

What OpenQuestion holds

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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.