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Review
. 2024 Jan;32(1):10-20.
doi: 10.1038/s41431-023-01462-1. Epub 2023 Nov 8.

A comprehensive SARS-CoV-2 and COVID-19 review, Part 2: host extracellular to systemic effects of SARS-CoV-2 infection

Affiliations
Review

A comprehensive SARS-CoV-2 and COVID-19 review, Part 2: host extracellular to systemic effects of SARS-CoV-2 infection

S Anand Narayanan et al. Eur J Hum Genet. 2024 Jan.

Abstract

COVID-19, the disease caused by SARS-CoV-2, has caused significant morbidity and mortality worldwide. The betacoronavirus continues to evolve with global health implications as we race to learn more to curb its transmission, evolution, and sequelae. The focus of this review, the second of a three-part series, is on the biological effects of the SARS-CoV-2 virus on post-acute disease in the context of tissue and organ adaptations and damage. We highlight the current knowledge and describe how virological, animal, and clinical studies have shed light on the mechanisms driving the varied clinical diagnoses and observations of COVID-19 patients. Moreover, we describe how investigations into SARS-CoV-2 effects have informed the understanding of viral pathogenesis and provide innovative pathways for future research on the mechanisms of viral diseases.

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Conflict of interest statement

RES is on the scientific advisory board of Miromatrix Inc and Lime Therapeutics and is a consultant and speaker for Alnylam Inc. The remaining authors declare no competing financial interests.

Figures

Fig. 1
Fig. 1. Different RNA and their role in COVID-19.
Structure and description of different categories of RNA involved in COVID-19.
Fig. 2
Fig. 2. SARS-CoV-2 Intracellular Replication and Extracellular Release of Circulating Factors.
An overview of the processes involved with SARS-CoV-2 infection and replication that lead to cellular adaptations (see ref. [3] for more details) and extracellular release of various biological factors into the circulation causing systemic physiological effects.
Fig. 3
Fig. 3. COVID-19 organ adaptations and symptoms.
An overview of the systemic organ adaptations resulting from SARS-CoV-2 infection as well as symptoms that develop.
Fig. 4
Fig. 4. COVID-19 biological adaptations and effects.
The multi-faceted and multiplex physiological adaptations resulting from SARS-CoV-2 infection, including the different cells, tissues, and organs that respond to viral infection. The airway milieu refers to the viral factors contained from inhalation and response to these factors in the lungs, while the systemic milieu refers to the viral factors transported through the circulation system and across body, and in turn, the physiological responses to these factors.

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