Evidence map›Paper›PMID 33303345›Full record

ReviewEuropean journal of internal medicine2021

How does SARS-CoV-2 targets the elderly patients? A review on potential mechanisms increasing disease severity.

Annemieke Smorenberg, Edgar Jg Peters, Paul LA van Daele, Esther J Nossent, Majon Muller

Open access · bronzeAbstract readReview
In one paragraph

Review in European journal of internal medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 66 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Annemieke SmorenbergDepartment of Internal Medicine, section Geriatric Medicine, Amsterdam UMC, VU medical center, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, the Netherlands.
Edgar Jg PetersDepartment of Internal Medicine, Section of Infectious Diseases, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Institute for Infection and Immunity, De Boelelaan 1117, 1081 HV, Amsterdam, The Netherlands.
Paul LA van DaeleDepartment of Allergology and Clinical Immunology, Erasmus Medical Center, Doctor Molewaterstraat 40, 3015 GD, Rotterdam, the Netherlands.
Esther J NossentDepartment of Pulmonary Medicine, Amsterdam UMC, VU medical center, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, the Netherlands.
Majon MullerDepartment of Internal Medicine, section Geriatric Medicine, Amsterdam UMC, VU medical center, Amsterdam Cardiovascular Sciences, De Boelelaan 1117, 1081 HV, Amsterdam, the Netherlands.
Amsterdam University Medical Centers · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

importanceAmong COVID-19 cases, especially the (frail) elderly show a high number of severe infections, hospital admissions, complications, and death. The highest mortality is found between 80 and 89 years old. Why do these patients have a higher risk of severe COVID-19? In this narrative review we address potential mechanisms regarding viral transmission, physical reserve and the immune system, increasing the severity of this infection in elderly patients. OBSERVATIONS: First, the spread of COVID-19 may be enhanced in elderly patients. Viral shedding may be increased, and early identification may be complicated due to atypical disease presentation and limited testing capacity. Applying hygiene and quarantine measures, especially in patients with cognitive disorders including dementia, can be challenging. Additionally, elderly patients have a decreased cardiorespiratory reserve and are more likely to have co-morbidity including atherosclerosis, rendering them more susceptible to complications. The aging innate and adaptive immune system is weakened, while there is a pro-inflammatory tendency. The effects of SARS-CoV-2 on the immune system on cytokine production and T-cells, further seem to aggravate this pro-inflammatory tendency, especially in patients with cardiovascular comorbidity, increasing disease severity. CONCLUSIONS AND RELEVANCE: The combination of all factors mentioned above contribute to the disease severity of COVID-19 in the older patient. While larger studies of COVID-19 in elderly patients are needed, understanding the factors increasing disease severity may improve care and preventative measures to protect the elderly patient at risk for (severe) COVID-19 in the future.

Indexed as

AgedAged, 80 and overAge FactorsCOVID-19HumansRisk FactorsSARS-CoV-2COVID19elderly patientsgeriatric careimmunology

Identifiers

PMID33303345
PMCPMC7703548
OpenAlexW3109645255

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.