Preprint Brief Report Version 1 Preserved in Portico This version is not peer-reviewed

Metabolic Reprogramming of Immunity in Obesity and Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2).

Version 1 : Received: 31 May 2023 / Approved: 2 June 2023 / Online: 2 June 2023 (02:11:22 CEST)

How to cite: Mehta, R.; Nguyen, H.; Deshpande, N.; Venketaraman, V. Metabolic Reprogramming of Immunity in Obesity and Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2).. Preprints 2023, 2023060112. https://doi.org/10.20944/preprints202306.0112.v1 Mehta, R.; Nguyen, H.; Deshpande, N.; Venketaraman, V. Metabolic Reprogramming of Immunity in Obesity and Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2).. Preprints 2023, 2023060112. https://doi.org/10.20944/preprints202306.0112.v1

Abstract

The risks for complications of severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) infection are higher in obese individuals. Obesity is a state of chronic low-grade inflammation, with high leptin levels due to leptin resistance, high basal levels of other pro-inflammatory cytokines such as TNF-alpha, MCP-I and IL-6, and low adiponectin levels, thus contributing to a state of defective innate immunity as well as impaired B and T cell responses. Obesity is a risk factor for metabolic syndrome, diabetes, cardiovascular disease and hypertension. It has been observed that pre-existence of these diseases confers a higher risk of severe SARS CoV2 infection as well as the need for intensive care; even below the age of 60 years if their body mass index (BMI) is greater than 30 kg/m2, and even more so if it is > 35 kg/m2. The metabolic factors contributing to the changes in altering the immune mechanisms in obese individuals and how this enhances the susceptibility to infection and development of serious SARS-CoV2 infection have been the subject of many debates. Future development of targeted therapy and guidelines will be benefited by greater understanding into these metabolic pathways.

Keywords

immunity; obesity; insulin resistance; innate and adaptive; treg; glutathione; cytokine storm

Subject

Medicine and Pharmacology, Epidemiology and Infectious Diseases

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