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Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
Published on: April 3, 2017
Obesity-Related Inflammation and Endothelial Dysfunction in COVID-19: Impact on Disease Severity
Andrea De Lorenzo1, Vanessa Estato2, Hugo C Castro-Faria-Neto2
1Instituto Nacional de Cardiologia, Rio de Janeiro, RJ, Brazil.
Insights
Obesity exacerbates COVID-19 severity through inflammation and vascular dysfunction. Understanding these links is crucial for managing high-risk patients during the pandemic.
Area of Science:
- Cardiovascular Medicine
- Metabolic Disorders
- Infectious Diseases
Background:
- The COVID-19 pandemic highlighted the significant association between obesity and increased disease severity.
- Obesity is characterized by chronic inflammation and metabolic alterations, contributing to various health complications.
Purpose of the Study:
- To elucidate the multifaceted mechanisms linking obesity to severe COVID-19 outcomes.
- To explore the roles of inflammation, adipokines, and endothelial dysfunction in COVID-19 severity among obese individuals.
Main Methods:
- Review of existing literature on obesity, inflammation, and COVID-19 pathophysiology.
- Analysis of the impact of adipokines (leptin, resistin) on vascular adhesion molecules.
- Examination of endothelial function impairment in obese patients infected with SARS-CoV-2.
Main Results:
- Obesity-related inflammation involves elevated cytokines and deregulated adipokines, increasing vascular adhesion.
- Impaired endothelial function in obese individuals is worsened by SARS-CoV-2 infection, leading to poor outcomes.
- Obesity's prothrombotic state and cardiac alterations contribute to increased cardiovascular events in COVID-19 patients.
Conclusions:
- Obesity significantly increases COVID-19 severity through interconnected inflammatory and vascular pathways.
- Targeting inflammation and improving endothelial function may be key strategies for managing severe COVID-19 in obese populations.
- Further research into the complex interplay between metabolic health and viral infections is warranted.
Abstract:
The coronavirus disease 2019 (COVID-19) pandemic has put into evidence another pandemic - obesity. Currently, several studies have documented the association between obesity and COVID-19 severity. The mechanisms underlying the increased risk of complications and mortality in obese patients with COVID-19 are of diverse nature. Inflammation plays a central role in obesity. Metabolic alterations seen in obese patients are related to an inflammatory response, and several studies report elevated levels of circulating inflammatory cytokines in obese patients. Also, deregulated expression of adipokines, such as leptin and resistin, increase the expression of vascular adhesion molecule 1 and intercellular adhesion molecule 1 that contribute to increased vascular leukocyte adhesiveness and additional oxidative stress. Additionally, it is now recognized that the chronic impairment of systemic vascular endothelial function in patients with cardiovascular and metabolic disorders, including obesity, when intensified by the detrimental effects of SARS-CoV-2 over the endothelium, may explain their worse outcomes in COVID-19. In fact, vascular endothelial dysfunction may contribute to a unfavorable response of the endothelium to the infection by SARS-CoV-2, whereas alterations in cardiac structure and function and the prothrombotic environment in obesity may also provide a link to the increased cardiovascular events in these patients.
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