Document Type : Original Article
Authors
1
Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
2
Cardiovascular Research Center, Kerman University of Medical Sciences, Kerman, Iran
3
Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
4
Department of Internal Medicine, Afzalipour Hospital, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
5
Department of Pathology, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
6
Immunology Department, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
7
Department of Physiology- Pharmacology, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
Abstract
Background: Dexamethasone is the most widely used corticosteroid for treating COVID-19 pulmonary complications. The effects of dexamethasone on serum inflammatory factors, including C-reactive protein (CRP), lactate dehydrogenase (LDH), and cortisol, were evaluated in COVID-19 pneumonia patients with pre-existing chronic obstructive pulmonary disease (COPD) in this study.
Methods: A total of 36 COVID-19 patients with pneumonia who had pre-existing COPD and were critically ill and 56 COVID-19- positive patients without pre-existing COPD were selected. A daily dose of 6–8 mg dexamethasone was administered during the hospitalization period. Some inflammatory markers (TNF-α, IL-10, and IL-6) and the serum levels of cortisol, LDH, and CRP were measured on admission and one week after hospitalization.
Results: TNF-α and IL-6 concentrations were significantly reduced and IL-10 significantly increased in all COVID-19 pneumonia patients with or without pre-existing COPD as a result of a daily dose of dexamethasone. Also, a significant reduction in cortisol, CRP, and LDH was observed following dexamethasone administration in all COVID-19 pneumonia patients, with or without preexisting COPD, with no correlation with gender, cigarette or waterpipe smoking, or opium abuse.
Conclusion: Our results showed a significant increase in TNF-α, IL-6, IL-10, cortisol, LDH, and CRP and a significant reduction in IL-10 in all critically ill COVID-19 pneumonia patients. Dexamethasone administration significantly reduced cortisol and proinflammatory cytokines and also LDH and CRP as the markers of COVID-19 severity.
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