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Updated: Aug 16, 2025

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
Published on: October 15, 2019
Gastrointestinal microbiota: A predictor of COVID-19 severity?
Maria Adriana Neag1, Damiana-Maria Vulturar2, Diana Gherman3
1Department of Pharmacology, Toxicology and Clinical Pharmacology, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca 400337, Romania.
Insights
The gut-lung axis influences inflammation in COVID-19. Improving gut microbiota with nutraceuticals may help prevent or treat this respiratory illness.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Background:
- Coronavirus disease 2019 (COVID-19) poses global health challenges, with severity influenced by comorbidities and age.
- The gut microbiota impacts respiratory health, and respiratory infections can alter gut microbial composition.
- The gut-lung axis plays a role in modulating inflammatory responses.
Purpose of the Study:
- To explore the relationship between gut microbiota and COVID-19.
- To investigate the potential of modulating the gut-lung axis for COVID-19 management.
Main Methods:
- Review of existing literature on the gut-lung axis and COVID-19.
- Analysis of the role of gut microbiota in respiratory viral infections.
- Exploration of nutraceutical interventions for gut microbiota modulation.
Main Results:
- Gut microbiota composition influences respiratory disease severity in COVID-19.
- The gut-lung axis is a key modulator of inflammation in COVID-19.
- Nutraceuticals can improve gut microbiota diversity and composition.
Conclusions:
- Modulating intestinal microbiota through nutraceutical agents shows promise for COVID-19 prophylaxis and treatment.
- Targeting the gut-lung axis may offer a novel therapeutic strategy for managing COVID-19.
- Further research into gut microbiota interventions for respiratory viral infections is warranted.
Abstract:
Coronavirus disease 2019 (COVID-19), caused by a severe acute respiratory syndrome coronavirus 2 infection, has raised serious concerns worldwide over the past 3 years. The severity and clinical course of COVID-19 depends on many factors (e.g., associated comorbidities, age, etc) and may have various clinical and imaging findings, which raises management concerns. Gut microbiota composition is known to influence respiratory disease, and respiratory viral infection can also influence gut microbiota. Gut and lung microbiota and their relationship (gut-lung axis) can act as modulators of inflammation. Modulating the intestinal microbiota, by improving its composition and diversity through nutraceutical agents, can have a positive impact in the prophylaxis/treatment of COVID-19.
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