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Sun L, Zhao JH, Fan WY, Feng B, Liu WW, Chen RQ, Ban C, Dang AG, Wang M, Luo KT, Zhou GY, Yu FF, Ba Y. Therapeutic effects of high-dose vitamin C supplementation in patients with COVID-19: a meta-analysis. Nutr Rev 2024; 82:1056-1068. [PMID: 37682265 DOI: 10.1093/nutrit/nuad105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023] Open
Abstract
CONTEXT Coronavirus disease 2019 (COVID-19) could induce the "cytokine storm" due to overactivation of immune system and accompanied by acute respiratory distress syndrome as a serious complication. Vitamin C has been effective in improving lung function of patients by reducing inflammation. OBJECTIVE The aim was to explore the therapeutic effects of high-dose vitamin C supplementation for patients with COVID-19 using meta-analysis. DATA SOURCES Published studies were searched from PubMed, Cochrane Library, Web of Science, EMBASE, and China National Knowledge Infrastructure databases up to August 2022 using the terms "vitamin C" and "COVID-19". Data analyses were performed independently by 2 researchers using the PRISMA guidelines. DATA EXTRACTION Heterogeneity between the included studies was assessed using I2 statistics. When I2 ≥50%, the random-effects model was used; otherwise, a fixed-effects model was applied. Stata 14.0 software was used to pool data by standardized mean differences (SMDs) with 95% CIs or odds ratios (ORs) with 95% CIs. DATA ANALYSIS The 14 studies had a total of 751 patients and 1583 control participants in 7 randomized controlled trials and 7 retrospective studies. The vitamin C supplement significantly increased ferritin (SMD = 0.272; 95% CI: 0.059 to 0.485; P = 0.012) and lymphocyte count levels (SMD = 0.376; 95% CI: 0.153 to 0.599; P = 0.001) in patients with COVID-19. Patients administered vitamin C in the length of intensive care unit staying (SMD = 0.226; 95% CI: 0.073 to 0.379; P = 0.004). Intake of vitamin C prominently alleviate disease aggravation (OR = 0.344, 95%CI: 0.135 to 0.873, P = 0.025). CONCLUSIONS High-dose vitamin C supplementation can alleviate inflammatory response and hinder the aggravation of COVID-19.
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Affiliation(s)
- Lei Sun
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Jia-Hao Zhao
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Wen-Yi Fan
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Bo Feng
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Wen-Wen Liu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Rui-Qin Chen
- Jinshui District Center for Disease Control and Prevention, Zhengzhou, Henan, China
| | - Chuang Ban
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Ao-Gui Dang
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Miao Wang
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Kang-Ting Luo
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Guo-Yu Zhou
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Fang-Fang Yu
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
| | - Yue Ba
- Department of Environmental Health, School of Public Health, Zhengzhou University, Environment and Health Innovation Team, Zhengzhou, Henan, China
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Hemilä H, Chalker E. Rebound effect explains the divergence in survival after 5 days in a controlled trial on vitamin C for COVID-19 patients. Front Med (Lausanne) 2024; 11:1391346. [PMID: 38841576 PMCID: PMC11151746 DOI: 10.3389/fmed.2024.1391346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/06/2024] [Indexed: 06/07/2024] Open
Affiliation(s)
- Harri Hemilä
- Department of Public Health, University of Helsinki, Helsinki, Finland
| | - Elizabeth Chalker
- National Centre for Epidemiology and Population Health, Australian National University, Canberra, ACT, Australia
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Hemilä H, Chalker E. Vitamin C reduces the severity of common colds: a meta-analysis. BMC Public Health 2023; 23:2468. [PMID: 38082300 PMCID: PMC10712193 DOI: 10.1186/s12889-023-17229-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Randomized trials have shown that vitamin C shortens the duration of common colds. Some trials reported greater effects on severe cold symptoms compared with mild symptoms. This review systematically compares the effects of vitamin C on severe and mild common cold symptoms. METHODS We included all placebo-controlled trials of orally administered vitamin C in doses of at least 1 g/day for the common cold for people in good health at baseline. The analysis was restricted to trials which reported both the total duration of the common cold, and the severity of the common cold measured using severity scales, the duration of more severe stages of the cold, or proxies for severe colds such as days indoors. Findings were pooled using the inverse variance, fixed effect options of the metacont function of the R package meta to calculate the ratio of means estimate. RESULTS Fifteen comparisons from 10 trials which reported both mild and severe symptoms were identified. All trials were randomized and double-blind. Compared to placebo, vitamin C significantly decreased the severity of the common cold by 15% (95% CI 9-21%). The direct comparison of the effect of vitamin C on mild and severe symptoms was limited to five comparisons which found that vitamin C had a significant benefit on the duration of severe symptoms. In this subset, there was a significant difference in the size of the effect of vitamin C on the overall duration of colds versus the duration of severe colds (P = 0.002), and vitamin C had no significant effect on the duration of mild symptoms. CONCLUSIONS The common cold is the leading cause of acute morbidity and a major cause of absenteeism from work and school. However, absenteeism is dependent on the severity of symptoms. The finding that vitamin C may have a greater effect on more severe measures of the common cold is therefore important. Further research on the therapeutic effects of vitamin C on the common cold should measure outcomes of differing levels of severity.
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Affiliation(s)
- Harri Hemilä
- Department of Public Health, University of Helsinki, POB 20, Helsinki, FI, FI-00014, Finland.
| | - Elizabeth Chalker
- Biological Data Science Institute, Australian National University, Canberra, ACT, 2601, Australia
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Maity J, Majumder S, Pal R, Saha B, Mukhopadhyay PK. Ascorbic acid modulates immune responses through Jumonji-C domain containing histone demethylases and Ten eleven translocation (TET) methylcytosine dioxygenase. Bioessays 2023; 45:e2300035. [PMID: 37694689 DOI: 10.1002/bies.202300035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/12/2023]
Abstract
Ascorbic acid is a redox regulator in many physiological processes. Besides its antioxidant activity, many intriguing functions of ascorbic acid in the expression of immunoregulatory genes have been suggested. Ascorbic acid acts as a co-factor for the Fe+2 -containing α-ketoglutarate-dependent Jumonji-C domain-containing histone demethylases (JHDM) and Ten eleven translocation (TET) methylcytosine dioxygenasemediated epigenetic modulation. By influencing JHDM and TET, ascorbic acid facilitates the differentiation of double negative (CD4- CD8- ) T cells to double positive (CD4+ CD8+ ) T cells and of T-helper cells to different effector subsets. Ascorbic acid modulates plasma cell differentiation and promotes early differentiation of hematopoietic stem cells (HSCs) to NK cells. These findings indicate that ascorbic acid plays a significant role in regulating both innate and adaptive immune cells, opening up new research areas in Immunonutrition. Being a water-soluble vitamin and a safe micro-nutrient, ascorbic acid can be used as an adjunct therapy for many disorders of the immune system.
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Affiliation(s)
- Jeet Maity
- Department of Life Sciences, Presidency University, Kolkata, India
| | | | - Ranjana Pal
- Department of Life Sciences, Presidency University, Kolkata, India
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Pugh S, Chan F, Han S, Lindo R, Krzewski DG, D'Orazi MA, Narayanajaya D, Gao Z, Norful AA. The Impact of a Nursing-Led Intervention Bundle With a Bedside Checklist to Reduce Mortality During the Initial COVID-19 Pandemic and Implications for Future Emergencies. J Nurs Adm 2023; 53:292-298. [PMID: 37098870 DOI: 10.1097/nna.0000000000001285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
OBJECTIVE The study objective was to examine the effectiveness of a bedside checklist enforcing nursing-led interventions in hospitalized COVID-19 patients early in the pandemic. BACKGROUND The absence of treatment guidelines for COVID-19 presented challenges to reducing mortality rates early in the pandemic. A bedside checklist and a bundle of nursing-led interventions named "Nursing Back to Basics (NB2B)" were assembled for patient care after a scoping review of evidence. METHODS A retrospective analysis was conducted to investigate the impact of the evidence-based interventions randomly implemented based on patient bed assignment. Electronic data (patient demographics, bed assignment and ICU transfers, length of stay, and patient discharge disposition) were extracted and calculated using descriptive statistics, t tests, and linear regression. RESULTS Patients receiving the NB2B intervention enforced with a bedside checklist had significantly lower mortality rates (12.3%) compared with those receiving standard nursing care (26.9%). CONCLUSIONS Bedside checklists enforcing evidence-based nursing-led interventions may be beneficial as a 1st-line public health emergency response.
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Affiliation(s)
- Suzanne Pugh
- Author Affiliations: Director of Nursing (Pugh), Department of the Emergency Service, Dialysis, and Administrative Supervision; Staff Nurse (Chan), Emergency Department; Staff Nurse (Han), Coronary Care Unit; Clinical Nurse Manager (Lindo), Emergency Department; Case Manager (Krzewski and D'Orazi); Director (Dr Narayanajaya), Department of the Clinical, Support Services & Capacity Management; and Information Technology Analyst (Gao), New York Presbyterian Queens; and Assistant Professor (Dr Norful), Columbia University School of Nursing, New York, New York
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Rust P, Ekmekcioglu C. The Role of Diet and Specific Nutrients during the COVID-19 Pandemic: What Have We Learned over the Last Three Years? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:5400. [PMID: 37048015 PMCID: PMC10093865 DOI: 10.3390/ijerph20075400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/30/2023] [Accepted: 04/01/2023] [Indexed: 06/19/2023]
Abstract
Nutrients and diets have an important impact on our immune system and infection risk and a huge number of papers have been published dealing with various aspects of nutrition in relation to SARS-CoV-2 infection risk or COVID-19 severity. This narrative review aims to give an update on this association and tries to summarize some of the most important findings after three years of pandemic. The analysis of major studies and systematic reviews leads to the conclusion that a healthy plant-based diet reduces the risks for SARS-CoV-2 infection and especially COVID-19 severity. Regarding micronutrients, vitamin D is to the fore, but also zinc, vitamin C and, to some extent, selenium may play a role in COVID-19. Furthermore, omega-3-fatty acids with their anti-inflammatory effects also deserve attention. Therefore, a major aim of societal nutritional efforts in future should be to foster a high quality plant-based diet, which not only exerts beneficial effects on the immune system but also reduces the risk for non-communicable diseases such as type 2 diabetes or obesity which are also primary risk factors for worse COVID-19 outcomes. Another aim should be to focus on a good supply of critical immune-effective nutrients, such as vitamin D and zinc.
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Affiliation(s)
- Petra Rust
- Department of Nutritional Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Cem Ekmekcioglu
- Department of Environmental Health, Center for Public Health, Medical University of Vienna, 1090 Vienna, Austria
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Xu SW, Ilyas I, Weng JP. Endothelial dysfunction in COVID-19: an overview of evidence, biomarkers, mechanisms and potential therapies. Acta Pharmacol Sin 2023; 44:695-709. [PMID: 36253560 PMCID: PMC9574180 DOI: 10.1038/s41401-022-00998-0] [Citation(s) in RCA: 130] [Impact Index Per Article: 130.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 09/11/2022] [Indexed: 12/15/2022] Open
Abstract
The fight against coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 infection is still raging. However, the pathophysiology of acute and post-acute manifestations of COVID-19 (long COVID-19) is understudied. Endothelial cells are sentinels lining the innermost layer of blood vessel that gatekeep micro- and macro-vascular health by sensing pathogen/danger signals and secreting vasoactive molecules. SARS-CoV-2 infection primarily affects the pulmonary system, but accumulating evidence suggests that it also affects the pan-vasculature in the extrapulmonary systems by directly (via virus infection) or indirectly (via cytokine storm), causing endothelial dysfunction (endotheliitis, endothelialitis and endotheliopathy) and multi-organ injury. Mounting evidence suggests that SARS-CoV-2 infection leads to multiple instances of endothelial dysfunction, including reduced nitric oxide (NO) bioavailability, oxidative stress, endothelial injury, glycocalyx/barrier disruption, hyperpermeability, inflammation/leukocyte adhesion, senescence, endothelial-to-mesenchymal transition (EndoMT), hypercoagulability, thrombosis and many others. Thus, COVID-19 is deemed as a (micro)vascular and endothelial disease. Of translational relevance, several candidate drugs which are endothelial protective have been shown to improve clinical manifestations of COVID-19 patients. The purpose of this review is to provide a latest summary of biomarkers associated with endothelial cell activation in COVID-19 and offer mechanistic insights into the molecular basis of endothelial activation/dysfunction in macro- and micro-vasculature of COVID-19 patients. We envisage further development of cellular models and suitable animal models mimicking endothelial dysfunction aspect of COVID-19 being able to accelerate the discovery of new drugs targeting endothelial dysfunction in pan-vasculature from COVID-19 patients.
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Affiliation(s)
- Suo-Wen Xu
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, 230001, China.
| | - Iqra Ilyas
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, 230001, China
| | - Jian-Ping Weng
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, 230001, China.
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8
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Schloss JV. Nutritional deficiencies that may predispose to long COVID. Inflammopharmacology 2023; 31:573-583. [PMID: 36920723 PMCID: PMC10015545 DOI: 10.1007/s10787-023-01183-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 02/28/2023] [Indexed: 03/16/2023]
Abstract
Multiple nutritional deficiencies (MND) confound studies designed to assess the role of a single nutrient in contributing to the initiation and progression of disease states. Despite the perception of many healthcare practitioners, up to 25% of Americans are deficient in five-or-more essential nutrients. Stress associated with the COVID-19 pandemic further increases the prevalence of deficiency states. Viral infections compete for crucial nutrients with immune cells. Viral replication and proliferation of immunocompetent cells critical to the host response require these essential nutrients, including zinc. Clinical studies have linked levels of more than 22 different dietary components to the likelihood of COVID-19 infection and the severity of the disease. People at higher risk of infection due to MND are also more likely to have long-term sequelae, known as Long COVID.
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Affiliation(s)
- John V Schloss
- Departments of Pharmaceutical Science and Biochemistry & Molecular Biology, Schools of Pharmacy and Medicine, American University of Health Sciences, 1600 East Hill St., Signal Hill, CA, 90755, USA.
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Bioactive compounds from acerola pomace: A review. Food Chem 2023; 404:134613. [DOI: 10.1016/j.foodchem.2022.134613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 10/03/2022] [Accepted: 10/12/2022] [Indexed: 11/22/2022]
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Development and Validation of HPLC-DAD Method for the Determination of Favipiravir and Studying the Impact of Vitamin C on the Pharmacokinetics of COVID-19 Antiviral Drug Favipiravir. SEPARATIONS 2022. [DOI: 10.3390/separations9100303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
A novel, sensitive, and low-cost HPLC method for the rapid determination of favipiravir (FVR) in rat plasma was developed and validated, and the effect of vitamin C on FVR pharmacokinetic parameters was investigated. FVR and oxcarbazepine (IS) were separated using a mobile phase of 50% acetonitrile and 50% water (with 0.25% trifluoroacetic acid) at 1.0 mL/min flow rate and detected at λmax 289 nm. The intra- and interday values for FVR in plasma were less than 15%, with low, medium, and high QC levels for the relative recovery rate, according to ICH guidelines. Cmax values in the control and experimental groups were 558 ± 124.42 and 979.13 ± 138.10 ng/mL, respectively; t1/2 values were 7.15 ± 1.60 and 9.09 ± 1.14 h, AUC(0-t) values were 5697.70 ± 536.58 and 7381.62 ± 1577.58 ng.h/mL, and AUC(0-∞) values were 5697.70 ± 536.58 and 8192.36 ± 1721.67, respectively. According to the results, the experimental group’s Cmax of FVR was 75.17% higher than the control group’s, the Vz/F was lower, and the t1/2 was 1.86 h longer. The technique developed for determining FVR in plasma was useful for FVR pharmacokinetics and food–drug interaction investigations.
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Olczak-Pruc M, Swieczkowski D, Ladny JR, Pruc M, Juarez-Vela R, Rafique Z, Peacock FW, Szarpak L. Vitamin C Supplementation for the Treatment of COVID-19: A Systematic Review and Meta-Analysis. Nutrients 2022; 14:4217. [PMID: 36235869 PMCID: PMC9570769 DOI: 10.3390/nu14194217] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 11/23/2022] Open
Abstract
Since the outbreak of the coronavirus disease 2019 (COVID-19) pandemic, caused by the severe respiratory syndrome coronavirus 2 (SARS-CoV-2), millions of people have died, and the medical system has faced significant difficulties. Our purpose was to perform a meta-analysis to estimate the effect of vitamin C on in-hospital mortality and the ICU or hospital length of stay for patients diagnosed with COVID-19. We conducted a systematic review with meta-analysis in the following databases: PubMed, Web of Science, Scopus and Cochrane Central Register of Controlled Trials. We included studies that evaluated the effect of vitamin C supplementation, compared with standard treatment in COVID-19 patients who are ≥18 y of age. Nineteen trials were included in the meta-analysis. In-hospital mortality with and without vitamin C supplementation was 24.1% vs. 33.9% (OR = 0.59; 95%CI: 0.37 to 0.95; p = 0.03), respectively. Sub-analysis showed that, in randomized clinical trials, in-hospital mortality varied and amounted to 23.9% vs. 35.8% (OR = 0.44; 95%CI: 0.25 to 0.76; p = 0.003), respectively. In the non-randomized trials, in-hospital mortality was 24.2% vs. 33.5% (OR = 0.72; 95%CI: 0.38 to 1.39; p = 0.33), respectively. The ICU length of stay was longer in patients treated with vitamin C vs. standard therapy, 11.1 (7.3) vs. 8.3 (4.7) days (MD = 1.91; 95%CI: 0.89 to 2.93; p < 0.001), respectively. Acute kidney injury in patients treated with and without vitamin C varied and amounted to 27.8% vs. 45.0% (OR = 0.56; 95%CI: 0.40 to 0.78; p < 0.001), respectively. There were no differences in the frequency of other adverse events among patients’ treatment with and without vitamin C (all p > 0.05). The use of vitamin C reduces hospital mortality. The length of stay in the ICU is longer among patients treated with vitamin C. In terms of patient safety, vitamin C has an acceptable profile. Low doses of vitamin C are effective and safe. Despite some evidence of the usefulness of vitamin C in modifying the course of COVID-19, it is too early to modify guidelines and recommendations. Further studies, in particular randomized clinical trials, are necessary.
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Affiliation(s)
| | - Damian Swieczkowski
- Department of Toxicology, Faculty of Pharmacy, Medical University of Gdansk, 80-210 Gdańsk, Poland
| | - Jerzy R. Ladny
- Department of Emergency Medicine, Medical University of Bialystok, 15-089 Bialystok, Poland
- Research Unit, Polish Society of Disaster Medicine, 05-806 Warsaw, Poland
| | - Michal Pruc
- Research Unit, Polish Society of Disaster Medicine, 05-806 Warsaw, Poland
| | - Raul Juarez-Vela
- Faculty of Health Science, University of La Rioja, Logroño, 26006 La Rioja, Spain
| | - Zubaid Rafique
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Frank W. Peacock
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Lukasz Szarpak
- Henry JN Taub Department of Emergency Medicine, Baylor College of Medicine, Houston, TX 77030, USA
- Institute of Outcomes Research, Maria Sklodowska-Curie Medical Academy, 00-136 Warsaw, Poland
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Ngwe Tun MM, Luvai E, Nwe KM, Toume K, Mizukami S, Hirayama K, Komatsu K, Morita K. Anti-SARS-CoV-2 activity of various PET-bottled Japanese green teas and tea compounds in vitro. Arch Virol 2022; 167:1547-1557. [PMID: 35606466 PMCID: PMC9126694 DOI: 10.1007/s00705-022-05483-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/11/2022] [Indexed: 12/21/2022]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a serious threat to global public health. The emergence of SARS-CoV-2 variants is a significant concern regarding the continued effectiveness of vaccines and antiviral therapeutics. Thus, natural products such as foods, drinks, and other compounds should be investigated for their potential to treat COVID-19. Here, we examined the in vitro antiviral activity against SARS-CoV-2 of various polyethylene terephthalate (PET)-bottled green Japanese teas and tea compounds. Six types of PET-bottled green tea were shown to inhibit SARS-CoV-2 at half-maximal inhibitory concentrations (IC50) of 121- to 323-fold dilution. Our study revealed for the first time that a variety of PET-bottled Japanese green tea drinks inhibit SARS-CoV-2 infection in a dilution-dependent manner. The tea compounds epigallocatechin gallate (EGCG) and epicatechin gallate showed virucidal activity against SARS-CoV-2, with IC50 values of 6.5 and 12.5 µM, respectively. The investigated teas and tea compounds inactivated SARS-CoV-2 in a dose-dependent manner, as demonstrated by the viral RNA levels and infectious titers. Furthermore, the green teas and EGCG showed significant inhibition at the entry and post-entry stages of the viral life cycle and inhibited the activity of the SARS-CoV-2 3CL-protease. These findings indicate that green tea drinks and tea compounds are potentially useful in prophylaxis and COVID-19 treatment.
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Affiliation(s)
- Mya Myat Ngwe Tun
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, , Nagasaki, 852-8523, Japan.
| | - Elizabeth Luvai
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, , Nagasaki, 852-8523, Japan
| | - Khine Mya Nwe
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, , Nagasaki, 852-8523, Japan
| | - Kazufumi Toume
- Section of Pharmacognosy, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Shusaku Mizukami
- Department of Immune Regulation, Shionogi Global Infectious Diseases Division, Institute of Tropical Medicine, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Kenji Hirayama
- Department of Immune Regulation, Shionogi Global Infectious Diseases Division, Institute of Tropical Medicine, Nagasaki University, Nagasaki, 852-8523, Japan
| | - Katsuko Komatsu
- Section of Pharmacognosy, Institute of Natural Medicine, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Kouichi Morita
- Department of Virology, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, , Nagasaki, 852-8523, Japan.
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Chavda VP, Kapadia C, Soni S, Prajapati R, Chauhan SC, Yallapu MM, Apostolopoulos V. A global picture: therapeutic perspectives for COVID-19. Immunotherapy 2022; 14:351-371. [PMID: 35187954 PMCID: PMC8884157 DOI: 10.2217/imt-2021-0168] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
The COVID-19 pandemic is a lethal virus outbreak by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), which has severely affected human lives and the global economy. The most vital part of the research and development of therapeutic agents is to design drug products to manage COVID-19 efficiently. Numerous attempts have been in place to determine the optimal drug dose and combination of drugs to treat the disease on a global scale. This article documents the information available on SARS-CoV-2 and its life cycle, which will aid in the development of the potential treatment options. A consolidated summary of several natural and repurposed drugs to manage COVID-19 is depicted with summary of current vaccine development. People with high age, comorbity and concomitant illnesses such as overweight, metabolic disorders, pulmonary disease, coronary heart disease, renal failure, fatty liver and neoplastic disorders are more prone to create serious COVID-19 and its consequences. This article also presents an overview of post-COVID-19 complications in patients.
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
- Department of Pharmaceutics, K B Institute of Pharmaceutical Education & Research, Kadi Sarva Vishwavidhyalaya, Gandhinagar, Gujarat, 382023, India
| | - Carron Kapadia
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Shailvi Soni
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Riddhi Prajapati
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Subhash C Chauhan
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
- South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
| | - Murali M Yallapu
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
- South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
| | - Vasso Apostolopoulos
- Institute for Health & Sport, Victoria University, Melbourne, VIC, 3030, Australia
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14
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Chavda VP, Kapadia C, Soni S, Prajapati R, Chauhan SC, Yallapu MM, Apostolopoulos V. A global picture: therapeutic perspectives for COVID-19. Immunotherapy 2022. [PMID: 35187954 DOI: 10.2217/imt-2021-0168.10.2217/imt-2021-0168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023] Open
Abstract
The COVID-19 pandemic is a lethal virus outbreak by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), which has severely affected human lives and the global economy. The most vital part of the research and development of therapeutic agents is to design drug products to manage COVID-19 efficiently. Numerous attempts have been in place to determine the optimal drug dose and combination of drugs to treat the disease on a global scale. This article documents the information available on SARS-CoV-2 and its life cycle, which will aid in the development of the potential treatment options. A consolidated summary of several natural and repurposed drugs to manage COVID-19 is depicted with summary of current vaccine development. People with high age, comorbity and concomitant illnesses such as overweight, metabolic disorders, pulmonary disease, coronary heart disease, renal failure, fatty liver and neoplastic disorders are more prone to create serious COVID-19 and its consequences. This article also presents an overview of post-COVID-19 complications in patients.
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
- Department of Pharmaceutics, K B Institute of Pharmaceutical Education & Research, Kadi Sarva Vishwavidhyalaya, Gandhinagar, Gujarat, 382023, India
| | - Carron Kapadia
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Shailvi Soni
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Riddhi Prajapati
- Department of Pharmaceutics & Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad, Gujarat, 380009, India
| | - Subhash C Chauhan
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
- South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
| | - Murali M Yallapu
- Department of Immunology & Microbiology, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
- South Texas Center of Excellence in Cancer Research, School of Medicine, University of Texas Rio Grande Valley, McAllen, TX 78503, USA
| | - Vasso Apostolopoulos
- Institute for Health & Sport, Victoria University, Melbourne, VIC, 3030, Australia
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15
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Islam MA, Haque MA, Rahman MA, Hossen F, Reza M, Barua A, Marzan AA, Das T, Kumar Baral S, He C, Ahmed F, Bhattacharya P, Jakariya M. A Review on Measures to Rejuvenate Immune System: Natural Mode of Protection Against Coronavirus Infection. Front Immunol 2022; 13:837290. [PMID: 35371007 PMCID: PMC8965011 DOI: 10.3389/fimmu.2022.837290] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/21/2022] [Indexed: 01/18/2023] Open
Abstract
SARS-CoV-2, a novel Corona virus strain, was first detected in Wuhan, China, in December 2019. As of December 16, 2021, almost 4,822,472 people had died and over 236,132,082 were infected with this lethal viral infection. It is believed that the human immune system is thought to play a critical role in the initial phase of infection when the viruses invade the host cells. Although some effective vaccines have already been on the market, researchers and many bio-pharmaceuticals are still working hard to develop a fully functional vaccine or more effective therapeutic agent against the COVID-19. Other efforts, in addition to functional vaccines, can help strengthen the immune system to defeat the corona virus infection. Herein, we have reviewed some of those proven measures, following which a more efficient immune system can be better prepared to fight viral infection. Among these, dietary supplements like- fresh vegetables and fruits offer a plentiful of vitamins and antioxidants, enabling to build of a healthy immune system. While the pharmacologically active components of medicinal plants directly aid in fighting against viral infection, supplementary supplements combined with a healthy diet will assist to regulate the immune system and will prevent viral infection. In addition, some personal habits, like- regular physical exercise, intermittent fasting, and adequate sleep, had also been proven to aid the immune system in becoming an efficient one. Maintaining each of these will strengthen the immune system, allowing innate immunity to become a more defensive and active antagonistic mechanism against corona-virus infection. However, because dietary treatments take longer to produce beneficial effects in adaptive maturation, personalized nutrition cannot be expected to have an immediate impact on the global outbreak.
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Affiliation(s)
- Md. Aminul Islam
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
- Department of Microbiology President Abdul Hamid Medical College, Karimganj, Bangladesh
| | - Md. Atiqul Haque
- Key Lab of Animal Epidemiology and Zoonoses of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, China
- Department of Microbiology, Faculty of Veterinary and Animal Science, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh
| | - Md. Arifur Rahman
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Foysal Hossen
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Mahin Reza
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Abanti Barua
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Abdullah Al Marzan
- Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, Bangladesh
| | - Tuhin Das
- Department of Microbiology, University of Chittagong, Chittagong, Bangladesh
| | | | - Cheng He
- Key Lab of Animal Epidemiology and Zoonoses of Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Firoz Ahmed
- Department of Microbiology, Noakhali Science and Technology University, Noakhali, Bangladesh
| | - Prosun Bhattacharya
- COVID-19 Research@KTH, Department of Sustainable Development, Environmental Science and Engineering, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Md. Jakariya
- Department of Environmental Science and Management, North South University, Dhaka, Bangladesh
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16
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Chavda VP, Patel AB, Vihol D, Vaghasiya DD, Ahmed KMSB, Trivedi KU, Dave DJ. Herbal Remedies, Nutraceuticals, and Dietary Supplements for COVID-19 Management: An Update. CLINICAL COMPLEMENTARY MEDICINE AND PHARMACOLOGY 2022; 2:100021. [PMID: 36620357 PMCID: PMC8816850 DOI: 10.1016/j.ccmp.2022.100021] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 01/11/2023]
Abstract
Currently, the world is facing a Coronavirus pandemic with a grave deficiency of specific therapy for Coronavirus Disease (COVID-19). Moreover, scientists attempt to discover the most refined approach to prevent this condition. Regarding COVID-19 infection, herbal medicines with immunomodulatory effects may offer patients a promising preventive treatment option. Several ayurvedic and Traditional Chinese Medicine (TCM) are effective during this worrisome Coronavirus pandemic i.e. Tinospora cordifolia (Willd.) Miers, Withania somnifera (L.) Dunal, Scutellaria baicalensis Georgi, Curcuma longa L. etc. TCM was shown to be utilized with over 90% efficacy when the COVID-19 pandemic broke out in early 2020. In addition to herbal treatments and nutraceutical drugs, dietary supplements such as vitamins and amino acid derivatives also play a significant part in COVID-19 management. Diet can assist in regulating inflammation, while nutraceuticals can aid in the prevention of viral invasion. Functional amino acids (e.g., arginine, cysteine, glutamate, glutamine, glycine, taurine, and tryptophan) and glutathione, which are all abundant in animal-sourced foodstuffs, are crucial for optimum immunity and health in humans and animals. The goal of this article is to thoroughly evaluate recent statistics on the effectiveness of herbal medicines in COVID-19, the antiviral activity of nutraceuticals, and the significance of these results in creating dietary supplements that would enhance innate immunity and contribute as preventive measures against severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2).
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, L.M. College of Pharmacy, Ahmedabad 380009, Gujarat, India
- Department of Pharmaceutics & Pharm. Technology, K. B. Institute of Pharmaceutical Education and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, Gujarat, India
| | - Aayushi B Patel
- Pharmacy Section, L.M. College of Pharmacy, Ahmedabad 380009, Gujarat, India
| | - Disha Vihol
- Pharmacy Section, L.M. College of Pharmacy, Ahmedabad 380009, Gujarat, India
| | - Darsh D Vaghasiya
- Pharmacy Section, L.M. College of Pharmacy, Ahmedabad 380009, Gujarat, India
| | | | - Kushal U Trivedi
- Pharmacy Section, L.M. College of Pharmacy, Ahmedabad 380009, Gujarat, India
| | - Divyang J Dave
- Department of Pharmaceutics & Pharm. Technology, K. B. Institute of Pharmaceutical Education and Research, Kadi Sarva Vishwavidyalaya, Gandhinagar 382023, Gujarat, India
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17
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Nabeshima A, Sakamoto A, Iwata K, Kitamura Y, Masui S, Inomata S, Iida M, Iida T, Nabeshima S. Maoto, a traditional herbal medicine, for post-exposure prophylaxis for Japanese healthcare workers exposed to COVID-19: A single center study. J Infect Chemother 2022; 28:907-911. [PMID: 35361537 PMCID: PMC8934734 DOI: 10.1016/j.jiac.2022.03.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 02/22/2022] [Accepted: 03/16/2022] [Indexed: 01/06/2023]
Abstract
Background Little research has been done on post-exposure prophylaxis (PEP) for COVID-19. This study was done to determine if maoto, a traditional herbal medicine commonly used for diseases with symptoms similar to those of COVID-19, can be repurposed for post-exposure prophylaxis to prevent the spread of nosocomial infection with SARS-CoV-2. Methods A cohort analysis was done of the data of 55 health care workers (HCWs) whether to get infected with SARS-CoV-2 in a Japanese hospital experiencing a COVID-19 cluster in April of 2021. Of these subjects, maoto granules for medical use were prescribed for PEP to 42 HCWs and taken for three days in mid-April. Controls were 13 HCWs who rejected the use of maoto. Polymerase chain reaction was performed routinely once or twice a week or when a participant presented with symptoms of COVID-19. Result There were no background differences between the maoto and control groups by profession, sex, or mean age. No severe adverse reactions were observed. During the observation period of 1 week, significantly fewer subjects were diagnosed with COVID-19 in the maoto group (N = 3, 7.1%) than in the control group (N = 6, 46.2%). The prophylactic effectiveness of maoto was 84.5%. Conclusion Oral administration of maoto is suggested to be effective as PEP against nosocomial COVID-19 infection.
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18
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High-Dose Vitamin C Supplementation as a Legitimate Anti-SARS-CoV-2 Prophylaxis in Healthy Subjects—Yes or No? Nutrients 2022; 14:nu14050979. [PMID: 35267953 PMCID: PMC8912816 DOI: 10.3390/nu14050979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 12/13/2022] Open
Abstract
Vitamin C has a number of acitvities that could contribute to its immune-modulating effects. The only question is whether we should provide ourselves with only the right level of it, or do we need much more during a pandemic? The possibility of reducing the incidence of viral diseases in a well-nourished population through the use of dietary supplements based on vitamin C is not supported in the literature. Despite this, the belief that an extra intake of vitamin C can increase the efficacy of the immune system is still popular and vitamin C is advertised as a remedy to prevent infectious disease. This article refers to the justification of the use of vitamin C in high doses as an anti-SARS-CoV-2 prophylaxis in healthy subjects. Does it make sense or not? As it turns out, any effects of vitamin C supplementation may be more prominent when the baseline vitamin C level is low, for example in physically active persons. People with hypovitaminosis C are more likely to respond to vitamin C administration. No studies regarding prevention of COVID-19 with high-dose vitamin C supplementation in healthy subjects were found.
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19
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Hemilä H, Chalker E. Bias against Vitamin C in Mainstream Medicine: Examples from Trials of Vitamin C for Infections. Life (Basel) 2022; 12:62. [PMID: 35054455 PMCID: PMC8779885 DOI: 10.3390/life12010062] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 02/07/2023] Open
Abstract
Evidence has shown unambiguously that, in certain contexts, vitamin C is effective against the common cold. However, in mainstream medicine, the views on vitamin C and infections have been determined by eminence-based medicine rather than evidence-based medicine. The rejection of the demonstrated benefits of vitamin C is largely explained by three papers published in 1975-two published in JAMA and one in the American Journal of Medicine-all of which have been standard citations in textbooks of medicine and nutrition and in nutritional recommendations. Two of the papers were authored by Thomas Chalmers, an influential expert in clinical trials, and the third was authored by Paul Meier, a famous medical statistician. In this paper, we summarize several flaws in the three papers. In addition, we describe problems with two recent randomized trial reports published in JAMA which were presented in a way that misled readers. We also discuss shortcomings in three recent JAMA editorials on vitamin C. While most of our examples are from JAMA, it is not the only journal with apparent bias against vitamin C, but it illustrates the general views in mainstream medicine. We also consider potential explanations for the widespread bias against vitamin C.
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Affiliation(s)
- Harri Hemilä
- Department of Public Health, University of Helsinki, FI-00014 Helsinki, Finland
| | - Elizabeth Chalker
- Biological Data Science Institute, Australian National University, Canberra, ACT 2600, Australia;
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20
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A Review on Dietary Additive, Food Supplement and Exercise Effects on the Prevention of Covid-19. NUTRITION AND FOOD SCIENCES RESEARCH 2022. [DOI: 10.52547/nfsr.9.1.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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21
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Hemilä H. Benefit of OTC Formula Against COVID-19 Is Explained by Selection Bias. J Evid Based Integr Med 2021; 26:2515690X211058417. [PMID: 34761995 PMCID: PMC8591635 DOI: 10.1177/2515690x211058417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Harri Hemilä
- Department of Public Health, 3835University of Helsinki, Helsinki, Finland
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22
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Cumpstey AF, Clark AD, Santolini J, Jackson AA, Feelisch M. COVID-19: A Redox Disease-What a Stress Pandemic Can Teach Us About Resilience and What We May Learn from the Reactive Species Interactome About Its Treatment. Antioxid Redox Signal 2021; 35:1226-1268. [PMID: 33985343 DOI: 10.1089/ars.2021.0017] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Significance: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus causing coronavirus disease 2019 (COVID-19), affects every aspect of human life by challenging bodily, socioeconomic, and political systems at unprecedented levels. As vaccines become available, their distribution, safety, and efficacy against emerging variants remain uncertain, and specific treatments are lacking. Recent Advances: Initially affecting the lungs, COVID-19 is a complex multisystems disease that disturbs the whole-body redox balance and can be long-lasting (Long-COVID). Numerous risk factors have been identified, but the reasons for variations in susceptibility to infection, disease severity, and outcome are poorly understood. The reactive species interactome (RSI) was recently introduced as a framework to conceptualize how cells and whole organisms sense, integrate, and accommodate stress. Critical Issues: We here consider COVID-19 as a redox disease, offering a holistic perspective of its effects on the human body, considering the vulnerability of complex interconnected systems with multiorgan/multilevel interdependencies. Host/viral glycan interactions underpin SARS-CoV-2's extraordinary efficiency in gaining cellular access, crossing the epithelial/endothelial barrier to spread along the vascular/lymphatic endothelium, and evading antiviral/antioxidant defences. An inflammation-driven "oxidative storm" alters the redox landscape, eliciting epithelial, endothelial, mitochondrial, metabolic, and immune dysfunction, and coagulopathy. Concomitantly reduced nitric oxide availability renders the sulfur-based redox circuitry vulnerable to oxidation, with eventual catastrophic failure in redox communication/regulation. Host nutrient limitations are crucial determinants of resilience at the individual and population level. Future Directions: While inflicting considerable damage to health and well-being, COVID-19 may provide the ultimate testing ground to improve the diagnosis and treatment of redox-related stress diseases. "Redox phenotyping" of patients to characterize whole-body RSI status as the disease progresses may inform new therapeutic approaches to regain redox balance, reduce mortality in COVID-19 and other redox diseases, and provide opportunities to tackle Long-COVID. Antioxid. Redox Signal. 35, 1226-1268.
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Affiliation(s)
- Andrew F Cumpstey
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Anna D Clark
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Jérôme Santolini
- Institute for Integrative Biology of the Cell (I2BC), Biochemistry, Biophysics and Structural Biology, CEA, CNRS, Université Paris-Sud, Universite Paris-Saclay, Gif-sur-Yvette, France
| | - Alan A Jackson
- Human Nutrition, University of Southampton and University Hospital Southampton, Southampton, United Kingdom
| | - Martin Feelisch
- Respiratory and Critical Care Research Group, Southampton NIHR Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
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23
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Hemilä H, Chalker E. Vitamin C and zinc lozenges for COVID-19? J Am Pharm Assoc (2003) 2021; 61:e39. [PMID: 34120854 PMCID: PMC8163692 DOI: 10.1016/j.japh.2021.05.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 05/25/2021] [Indexed: 02/02/2023]
Affiliation(s)
- Harri Hemilä
- Department of Public Health, University of Helsinki, POB 41, Helsinki, FI-00014, Finland.
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24
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Teafatiller T, Agrawal S, De Robles G, Rahmatpanah F, Subramanian VS, Agrawal A. Vitamin C Enhances Antiviral Functions of Lung Epithelial Cells. Biomolecules 2021; 11:1148. [PMID: 34439814 PMCID: PMC8394979 DOI: 10.3390/biom11081148] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 02/06/2023] Open
Abstract
Vitamin C is well documented to have antiviral functions; however, there is limited information about its effect on airway epithelial cells-the first cells to encounter infections. Here, we examined the effect of vitamin C on human bronchial epithelium transformed with Ad12-SV40 2B (BEAS-2B) cells, and observed that sodium-dependent vitamin C transporter 2 (SVCT2) was the primary vitamin C transporter. Transcriptomic analysis revealed that treating BEAS-2B cells with vitamin C led to a significant upregulation of several metabolic pathways and interferon-stimulated genes (ISGs) along with a downregulation of pathways involved in lung injury and inflammation. Remarkably, vitamin C also enhanced the expression of the viral-sensing receptors retinoic acid-inducible gene 1 (RIG-1) and melanoma differentiation-associated protein 5 (MDA-5), which was confirmed at the protein and functional levels. In addition, the lungs of l-gulono-γ-lactone oxidase knockout (GULO-KO) mice also displayed a marked decrease in these genes compared to wild-type controls. Collectively, our findings indicate that vitamin C acts at multiple levels to exert its antiviral and protective functions in the lungs.
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Affiliation(s)
- Trevor Teafatiller
- Division of Gastroenterology, Department of Medicine, University of California, Irvine, CA 92697, USA;
| | - Sudhanshu Agrawal
- Division of Basic and Clinical Immunology, Department of Medicine, University of California, Irvine, CA 92697, USA;
| | - Gabriela De Robles
- Department of Pathology, University of California, Irvine, CA 92697, USA; (G.D.R.); (F.R.)
| | - Farah Rahmatpanah
- Department of Pathology, University of California, Irvine, CA 92697, USA; (G.D.R.); (F.R.)
| | - Veedamali S. Subramanian
- Division of Gastroenterology, Department of Medicine, University of California, Irvine, CA 92697, USA;
| | - Anshu Agrawal
- Division of Basic and Clinical Immunology, Department of Medicine, University of California, Irvine, CA 92697, USA;
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25
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Hemilä H, Carr A, Chalker E. Vitamin C May Increase the Recovery Rate of Outpatient Cases of SARS-CoV-2 Infection by 70%: Reanalysis of the COVID A to Z Randomized Clinical Trial. Front Immunol 2021; 12:674681. [PMID: 34040614 PMCID: PMC8141621 DOI: 10.3389/fimmu.2021.674681] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 04/21/2021] [Indexed: 12/19/2022] Open
Affiliation(s)
- Harri Hemilä
- Department of Public Health, University of Helsinki, Helsinki, Finland
| | - Anitra Carr
- Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand
| | - Elizabeth Chalker
- School of Public Health, University of Sydney, Sydney, NSW, Australia
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