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Updated: Aug 29, 2025

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19
Published on: July 5, 2022
COVID-19 and diabetes-Two giants colliding: From pathophysiology to management
Maria Chiara Pelle1, Isabella Zaffina1, Michele Provenzano2
1Department of Medical and Surgical Sciences, University 'Magna Graecia' of Catanzaro, Catanzaro, Italy.
Insights
The COVID-19 pandemic has disproportionately affected individuals with diabetes. Understanding the complex mechanisms linking diabetes and severe COVID-19 outcomes is crucial for improving patient prognosis.
Area of Science:
- Infectious Diseases
- Endocrinology
- Public Health
Background:
- The COVID-19 pandemic, caused by SARS-CoV-2, has strained global health systems.
- High-risk populations, including individuals with diabetes, face severe illness and mortality.
- While vaccines and therapies have emerged, understanding COVID-19's impact on diabetes remains critical.
Purpose of the Study:
- To elucidate the mechanisms contributing to poor prognosis in patients with COVID-19 and diabetes.
- To explore potential strategies for improving outcomes in this vulnerable patient group.
Main Methods:
- Review of proposed mechanisms linking COVID-19 and diabetes.
- Discussion of the role of insulin resistance, inflammation, and cytokine storm.
- Analysis of SARS-CoV-2 interaction with angiotensin-converting enzyme 2 receptors and its effect on hyperglycemia.
Main Results:
- SARS-CoV-2 infection exacerbates existing diabetic complications and increases mortality risk.
- Insulin resistance, systemic inflammation, and cytokine storm are key contributing factors.
- Viral entry via ACE2 receptors on pancreatic beta cells may induce hyperglycemia, impacting both diabetic and non-diabetic patients.
Conclusions:
- The interplay between SARS-CoV-2 and diabetes involves complex pathophysiological pathways.
- Targeting mechanisms like insulin resistance and inflammation may improve COVID-19 outcomes in diabetic patients.
- Further research is needed to develop effective interventions for this high-risk population.
Abstract:
Since December 2019, a new coronavirus, called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has spread around the world, causing the coronavirus 2019 (COVID-19) pandemic. From the beginning, SARS-CoV-2 has put a strain on the health system. In fact, many patients have had severe forms of the disease with the need for hospitalization due to respiratory failure. To contain the pandemic, the most widely used approach has been lockdowns. Social restrictions have been reduced thanks to the development of vaccines and targeted therapies. However, fatal events still occur among people at high risk of serious infection, such as patients with concomitant diabetes. Different mechanisms have been proposed to explain the poor prognosis of patients with diabetes and COVID-19, but the specific cause is unclear. It is now known that insulin resistance, inflammation, and cytokine storm are involved. Moreover, SARS-CoV-2 uses the angiotensin-converting enzyme 2 receptors to enter cells. This receptor is expressed on pancreatic beta cells and, during infection, it appears that receptor involvement may induce hyperglycemia in patients with or without diabetes. In this study, we discuss the mechanisms underlying the poor prognosis in people with COVID-19 and diabetes and what may improve the outcome in these patients.
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