Effectiveness of Curcumin on Outcomes of Hospitalized COVID-19 Patients: A Systematic Review of Clinical Trials
Amir Vahedian-Azimi, Mitra Abbasifard, Farshid Rahimi-Bashar, Paul C Guest, Muhammed Majeed, Asadollah Mohammadi, Maciej Banach, Tannaz Jamialahmadi, Amirhossein Sahebkar
Nutrients, doi:10.3390/nu14020256
Despite the ongoing vaccination efforts, there is still an urgent need for safe and effective treatments to help curb the debilitating effects of COVID-19 disease. This systematic review aimed to investigate the efficacy of supplemental curcumin treatment on clinical outcomes and inflammationrelated biomarker profiles in COVID-19 patients. We searched PubMed, Scopus, Web of Science, EMBASE, ProQuest, and Ovid databases up to 30 June 2021 to find studies that assessed the effects of curcumin-related compounds in mild to severe COVID-19 patients. Six studies were identified which showed that curcumin supplementation led to a significant decrease in common symptoms, duration of hospitalization and deaths. In addition, all of these studies showed that the intervention led to amelioration of cytokine storm effects thought to be a driving force in severe COVID-19 cases. This was seen as a significant (p < 0.05) decrease in proinflammatory cytokines such as IL1β and IL6, with a concomitant significant (p < 0.05) increase in anti-inflammatory cytokines, including IL-10, IL-35 and TGF-α. Taken together, these findings suggested that curcumin exerts its beneficial effects through at least partial restoration of pro-inflammatory/anti-inflammatory balance. In conclusion, curcumin supplementation may offer an efficacious and safe option for improving COVID-19 disease outcomes. We highlight the point that future clinical studies of COVID-19 disease should employ larger cohorts of patients in different clinical settings with standardized preparations of curcuminrelated compounds.
Supplementary Materials: The following supporting information can be downloaded at: https: //www.mdpi.com/article/10.3390/nu14020256/s1, Supplementary File S1. Details of search strategy; Supplementary File S2. Methodological quality assessment for RCTs included studies using the Jadad rating scale.
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'content-version': 'vor',
'intended-application': 'similarity-checking'}],
'deposited': { 'date-parts': [[2022, 1, 10]],
'date-time': '2022-01-10T05:05:33Z',
'timestamp': 1641791133000},
'score': 1,
'subtitle': [],
'short-title': [],
'issued': {'date-parts': [[2022, 1, 7]]},
'references-count': 65,
'journal-issue': {'issue': '2', 'published-online': {'date-parts': [[2022, 1]]}},
'alternative-id': ['nu14020256'],
'URL': 'http://dx.doi.org/10.3390/nu14020256',
'relation': {},
'ISSN': ['2072-6643'],
'issn-type': [{'value': '2072-6643', 'type': 'electronic'}],
'subject': ['Food Science', 'Nutrition and Dietetics'],
'published': {'date-parts': [[2022, 1, 7]]}}
