Insights & Discussion
Manuka honey exhibits significant anti-influenza viral activity, inhibiting replication with virucidal effects. Combining manuka honey with existing drugs enhances their efficacy, suggesting its medicinal potential.
This study aimed to address the urgent need for novel anti-influenza drugs by evaluating the anti-viral activity of honey, focusing on manuka honey. Antiviral activities were assessed using MDCK cells, revealing that manuka honey efficiently inhibited influenza virus replication with an IC50 of 3.6 ± 1.2 mg/mL and a CC50 of 82.3 ± 2.2 mg/mL, resulting in a selective index of 22.9. Virucidal effects were identified as the underlying mechanism. Furthermore, combining manuka honey with zanamivir or oseltamivir significantly enhanced their efficacy, showcasing the potential medicinal value of honey, particularly manuka honey, against the influenza virus.
The study underscores the potent inhibitory activity of honey, especially manuka honey, against influenza viruses, offering promising medicinal implications. The observed virucidal effects and the synergistic enhancement of known anti-influenza drugs highlight the multifaceted potential of honey in combating influenza infections. Further exploration of the specific mechanisms underlying these effects could contribute to the development of effective anti-influenza therapies.
Honey, in general, and particularly manuka honey, has potent inhibitory activity against the influenza virus, demonstrating a potential medicinal value.
Antiviral activities of honey samples were evaluated using MDCK cells. To elucidate the possible mechanism of action of honey, plaque inhibition assays were used. Synergistic effects of honey with known anti-influenza virus drugs such as zanamivir or oseltamivir were tested.
Manuka honey efficiently inhibited influenza virus replication (IC50 = 3.6 ± 1.2 mg/mL; CC50 = 82.3 ± 2.2 mg/mL; selective index = 22.9), which is related to its virucidal effects. In the presence of 3.13 mg/mL manuka honey, the IC50 of zanamivir or oseltamivir was reduced to nearly 1/1000th of their single use.
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Bee-collected pollen and bee bread, particularly when artificially fermented, demonstrate significant antiviral activity against the H1N1 strain of the influenza A virus.
2023 Foods Antiviral Activity of Beebread, Bee-Collected Pollen and Artificially Fermented Pollen against Influenza A Virus Dimitriou T, Asoutis Didaras N, Barda C, Skopeliti D, Kontogianni K, Karatasou K, et al.
Experimental Study Antiviral Bee Bread Bee Pollen
The research investigated the antiviral properties of bee-collected pollen (BCP) and bee bread (BB), including versions that had undergone artificial fermentation. The experiment also assessed separate proteins, water content, and -butanol portions of these substances. The analysis evaluated their effectiveness against the H1N1 strain of the influenza A virus (IAV). The antiviral behavior of these materials was taken in lab conditions via a comparative real-time PCR analysis working on their inhibitory concentration and selectivity index.
The outcomes revealed artificial fermentation improved the antiviral effectiveness of BCP. The protein fractions within the BCP and BB presented the greatest antiviral activity. Observations also highlighted that the chemical composition, prominent in proteins, and potentially microbiome metabolism determined the antiviral properties of BCP and BB. The chemical profile analysis emphasized the existence of some specialized metabolites that might be contributing towards this antiviral action.
Green tea consumption has been found to be effective in preventing the contraction of influenza infections.
2021 Molecules Anti-Influenza with Green Tea Catechins: A Systematic Review and Meta-Analysis Rawangkan A, Kengkla K, Kanchanasurakit S, Duangjai A, Saokaew S
Systematic Review Antiviral Green Tea Influenza
To identify the potential benefits of green tea in influenza prevention, a methodical review and combined analysis of eight distinct research studies involving 5,048 participants was completed. The effect of green tea catechin treatment was tested against control conditions and assessed based on infection rates. Five of these studies were randomized controlled trials involving 884 participants and three were cohort studies with 2,223 participants. Subgroups such as those who gargled or took orally ingested forms of green tea were also analyzed separately. Further to this, the possibility of publication biases was evaluated using Begg's and Egger's tests.
The results showed both the randomized trials and the cohort studies displayed significant preventative effects on influenza infection for those treated with green tea catechins. Notably, there was no evidence of non-uniformity within the data, reinforcing these findings. The pooled results of different consumption methods further supported these findings, showing no disparities among the subgroups. These results suggest the consumption of green tea has tangible prophylactic effects against influenza infection.
Bee honey and propolis could have potential beneficial effects as supporting treatments for COVID-19, enhancing immunity and inhibiting viral activity.
2021 Molecules Propolis, Bee Honey, and Their Components Protect against Coronavirus Disease 2019 (COVID-19): A Review of In Silico, In Vitro, and Clinical Studies Ali AM, Kunugi H
Review Article Anti-Inflammatory Antiviral COVID-19
The study's methodology involved a comprehensive review of the literature on the potential anti-COVID-19 effects of bee honey and propolis, products known for their strong antimicrobial and antioxidant abilities. The researchers conducted molecular simulations to see how various flavonoids found in these products might inhibit essential viral processes. Additionally, they compared the effectiveness of propolis extracts delivered by nanocarriers to ethanolic extracts, and they examined the effects of a combination of honey and propolis on hospitalized COVID-19 patients.
The findings from the review and simulations suggested that certain flavonoids in honey and propolis may inhibit the fusion of the virus spike with host cells, interactions that cause a cytokine storm, and viral replication. Propolis ethanolic extract, rutin, and propolis liposomes displayed inhibitory action against non-structural proteins of the virus in vitro while naringin inhibited viral infection in specific cells. When delivered via nanocarriers, propolis extracts showed enhanced antiviral effects against the virus compared to ethanolic extracts. Observations of hospitalized patients suggested that those treated with green Brazilian propolis or a honey-propolis combination experienced quicker viral clearance, symptom recovery, and hospital discharge, along with lower mortality rates.
Honey is more effective than usual care alternatives for improving upper respiratory tract infection symptoms, particularly cough frequency and cough severity.
2020 BMJ Evidence-Based Medicine Effectiveness of honey for symptomatic relief in upper respiratory tract infections: a systematic review and meta-analysis Abuelgasim H, Albury C, Lee J
Systematic Review Antimicrobial Antimicrobial Resistance Cough
We identified 1345 unique records, and 14 studies were included. Overall risk of bias was moderate. Compared with usual care, honey improved combined symptom score, cough frequency. We combined two studies comparing honey with placebo for relieving combined symptoms.
Honey was superior to usual care for the improvement of symptoms of upper respiratory tract infections. It provides a widely available and cheap alternative to antibiotics. Honey could help efforts to slow the spread of antimicrobial resistance, but further high quality, placebo controlled trials are needed.
Honey can be used as an alternative to antibiotics by clinicians who wish to offer treatment for upper respiratory tract infections, which may help to combat antimicrobial resistance.
2020 BMJ Evidence-Based Medicine Effectiveness of honey for symptomatic relief in upper respiratory tract infections: a systematic review and meta-analysis Abuelgasim H, Albury C, Lee J
Systematic Review Antimicrobial Antimicrobial Resistance Cough
Upper respiratory tract infections (URTIs) are the most frequent reason for antibiotic prescription. Since the majority of URTIs are viral, antibiotic prescription is both ineffective and inappropriate. However, a lack of effective alternatives, as well as a desire to preserve the patient–doctor relationship, both contribute to antibiotic over prescription. Antibiotic overuse is a key driver of antimicrobial resistance, rated by the UK government as one of the top 10 risks facing Britain. Furthermore, drug resistant infections are associated with worse patient outcomes than antibiotic susceptible infections, underlining the impact of antimicrobial resistance on individual patients.
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