Curcumin as a potential therapy for COVID-19

Published on 7. May 2021 | Rattis BAC, Ramos SG, Celes MRN
AntioxidantAntiviralCurcuminInflammationsImmune systemTurmericOxidative stressPreventionInfectionCOVID-19

The study investigates the potential mechanisms of action of curcumin in the treatment of COVID-19. SARS-CoV-2 triggers a complex series of immune responses, including “cytokine storm” hyperinflammation, thrombosis and organ damage. Curcumin, a natural polyphenol, shows antiviral, anti-inflammatory and anticoagulant properties that make it a promising candidate for adjuvant therapy.

In silico analyses showed that curcumin has a high binding affinity to SARS-CoV-2 proteins such as the spike protein and ACE2, suggesting an inhibition of virus entry and replication. In clinical studies with nanocurcumin, significant improvements in symptoms (e.g. fever, shortness of breath) were observed in patients. In addition, curcumin reduced inflammatory markers such as IL-6 and inhibited the formation of blood clots by modulating the coagulation cascade. It also protects against lung and heart damage by reducing oxidative stress and inflammation.

Conclusion: Curcumin could be used as a complementary therapy to alleviate COVID-19-related inflammation and complications. However, further studies are needed to evaluate dose, bioavailability and long-term effects.

Background:

COVID-19 is caused by SARS-CoV-2 and leads to a variety of symptoms ranging from mild respiratory infections to severe illnesses such as acute respiratory distress syndrome (ARDS). The main complications include hyperinflammation, thrombosis and organ damage. Curcumin, a natural compound derived from turmeric, is known for its antioxidant, anti-inflammatory and antiviral properties and could be a promising addition to COVID-19 therapy.

Methodology:

The study analyzed existing literature on the mechanisms of action of curcumin. In silico models, preclinical and clinical studies were examined to evaluate the effect of curcumin on SARS-CoV-2, inflammatory processes and coagulation disorders. Particular attention was paid to the use of nanocurcumin to improve bioavailability.

Results:

1. Antiviral effects:

– Curcumin showed strong in silico binding to SARS-CoV-2 spike proteins and ACE2 receptors. This suggests that it could inhibit virus entry and replication processes.

– In vitro studies have confirmed that curcumin inhibits virus replication in viruses similar to SARS-CoV.

2. Anti-inflammatory effects:

– Curcumin reduces the activation of the NF-κB signaling pathway, which is responsible for the release of pro-inflammatory cytokines such as IL-6, IL-1β and TNF-α.

– In clinical studies, nanocurcumin lowered the concentration of inflammatory markers and modulated the Th17 and Treg cell response, which contributed to the reduction of cytokine storms.

3. Coagulation inhibition:

– COVID-19 patients often show increased D-dimer levels and thrombosis risks. Curcumin prevents the expression of tissue factors (TF) and reduces the formation of blood clots by inhibiting platelet activation and NETs (neutrophil extracellular traps).

4. Organ protection:

– In models of lung injury, curcumin prevented alveolar cell death and reduced neutrophil infiltration and oxidative stress.

– Curcumin protected the heart from inflammation and thrombosis and could prevent long-term cardiovascular damage caused by COVID-19.

Conclusion:

Curcumin offers promising approaches for the treatment of COVID-19 due to its multifunctional properties. It addresses viral invasion, modulates inflammatory and coagulation processes and protects against organ failure. Nevertheless, further clinical studies are needed to validate the optimal dosage and efficacy in COVID-19 patients. Curcumin could be a safe and cost-effective addition to existing therapies.

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