Evidence map›Paper›PMID 35933347›Full record

ArticleCardiovascular diabetology2022

Prevalence of symptoms, comorbidities, fibrin amyloid microclots and platelet pathology in individuals with Long COVID/Post-Acute Sequelae of COVID-19 (PASC).

Etheresia Pretorius, Chantelle Venter, Gert Jacobus Laubscher, Maritha J Kotze, Sunday O Oladejo, Liam R Watson, Kanshu Rajaratnam, Bruce W Watson, Douglas B Kell

Open access · goldAbstract read
In one paragraph

Article in Cardiovascular diabetology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 151 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed, 2 pooled it
28.5field-weighted citation impact, top 1% 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

151 citing papers in PubMed, 2 syntheses or guidelines pooled it, 238 citations in OpenAlex.

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91 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

9 authors at 3 institutions in 3 countries.

Etheresia PretoriusDepartment of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch, 7602, South Africa. resiap@sun.ac.za.ORCID 0000-0002-9108-2384
Chantelle VenterDepartment of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch, 7602, South Africa.
Gert Jacobus LaubscherMediclinic Stellenbosch, Stellenbosch, 7600, South Africa.
Maritha J KotzeDivision of Chemical Pathology, Department of Pathology, National Health Laboratory Service, Tygerberg Hospital & Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, 8000, South Africa.
Sunday O OladejoCentre for AI Research, School for Data-Science & Computational Thinking, Stellenbosch University, Stellenbosch, 7600, South Africa.
Liam R WatsonCentre for AI Research, School for Data-Science & Computational Thinking, Stellenbosch University, Stellenbosch, 7600, South Africa.ORCID 0000-0002-7016-9229
Kanshu RajaratnamCentre for AI Research, School for Data-Science & Computational Thinking, Stellenbosch University, Stellenbosch, 7600, South Africa.
Bruce W WatsonCentre for AI Research, School for Data-Science & Computational Thinking, Stellenbosch University, Stellenbosch, 7600, South Africa.ORCID 0000-0003-0511-1837
Douglas B KellDepartment of Physiological Sciences, Faculty of Science, Stellenbosch University, Private Bag X1, Matieland, Stellenbosch, 7602, South Africa. dbk@liv.ac.uk.ORCID 0000-0001-5838-7963
Stellenbosch University · ZAUniversity of Liverpool · GBNational Health Laboratory Service · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFibrin(ogen) amyloid microclots and platelet hyperactivation previously reported as a novel finding in South African patients with the coronavirus 2019 disease (COVID-19) and Long COVID/Post-Acute Sequelae of COVID-19 (PASC), might form a suitable set of foci for the clinical treatment of the symptoms of Long COVID/PASC. A Long COVID/PASC Registry was subsequently established as an online platform where patients can report Long COVID/PASC symptoms and previous comorbidities.

methodsIn this study, we report on the comorbidities and persistent symptoms, using data obtained from 845 South African Long COVID/PASC patients. By using a previously published scoring system for fibrin amyloid microclots and platelet pathology, we also analysed blood samples from 80 patients, and report the presence of significant fibrin amyloid microclots and platelet pathology in all cases.

resultsHypertension, high cholesterol levels (dyslipidaemia), cardiovascular disease and type 2 diabetes mellitus (T2DM) were found to be the most important comorbidities. The gender balance (70% female) and the most commonly reported Long COVID/PASC symptoms (fatigue, brain fog, loss of concentration and forgetfulness, shortness of breath, as well as joint and muscle pains) were comparable to those reported elsewhere. These findings confirmed that our sample was not atypical. Microclot and platelet pathologies were associated with Long COVID/PASC symptoms that persisted after the recovery from acute COVID-19.

conclusionsFibrin amyloid microclots that block capillaries and inhibit the transport of O

Indexed as

COVID-19Diabetes Mellitus, Type 2AmyloidFemaleFibrinHumansMalePost-Acute COVID-19 SyndromePrevalenceSARS-CoV-2AmyloidFibrinAmyloid fibrin(ogen)Co-morbiditiesFluorescence microscopyHyperactivated plateletsLong COVID/PASCSymptoms

Identifiers

PMID35933347
PMCPMC9356426
OpenAlexW4290000856

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.