Evidence map›Paper›PMID 33425204›Full record

ReviewThe World Allergy Organization journal2021

Efficacy of broccoli and glucoraphanin in COVID-19: From hypothesis to proof-of-concept with three experimental clinical cases.

Jean Bousquet, Vincent Le Moing, Hubert Blain, Wienczyslawa Czarlewski, Torsten Zuberbier, Rafael de la Torre, Nieves Pizarro Lozano, Jacques Reynes, Anna Bedbrook, Jean-Paul Cristol and 11 more

Abstract readReview
In one paragraph

Review in The World Allergy Organization journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Exogenous application of glutathione enhanced growth, nutritional orchestration and physiochemical characteristics ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2023
    Article
  6. Molecules (Basel, Switzerland) · 2022
    Review
  7. Review
  8. Glucosinolates and their hydrolysis products as potential nutraceuticals to combat cytokine storm in SARS-COV-2.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2022
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Functional food: complementary to fight against COVID-19.Beni-Suef University journal of basic and applied sciences · 2022
    Review
  14. Review
  15. Review
  16. Review
  17. Review
  18. Review
  19. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

21 authors.

Jean BousquetCharité, Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Comprehensive Allergy Center, Department of Dermatology and Allergy, Berlin, Germany.
Vincent Le MoingMaladies Infectiouses et Tropicales, CHU Montpellier, France.
Hubert BlainDepartment of Geriatrics, Montpellier University Hospital, Montpellier, France.
Wienczyslawa CzarlewskiMedical Consulting Czarlewski, Levallois, France.
Torsten ZuberbierCharité, Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Comprehensive Allergy Center, Department of Dermatology and Allergy, Berlin, Germany.
Rafael de la TorreCIBER Fisiopatologia de La Obesidad y Nutrición (CIBEROBN), Madrid, Spain.
Nieves Pizarro LozanoIMIM (Hospital del Mar Research Institute), Barcelona, Spain.
Jacques ReynesMaladies Infectiouses et Tropicales, CHU Montpellier, France.
Anna BedbrookMACVIA France, University Hospital, Montpellier, France.
Jean-Paul CristolLaboratoire de Biochimie et Hormonologie, PhyMedExp, Université de Montpellier, INSERM, CNRS, CHU de Montpellier, France.
Alvaro A CruzFundação ProAR, Federal University of Bahia and GARD/WHO Planning Group, Salvador, Brazil.
Alessandro FiocchiDivision of Allergy, Department of Pediatric Medicine - The Bambino Gesù Children's Research Hospital Holy see, Rome, Italy.
Tari HaahtelaSkin and Allergy Hospital, Helsinki University Hospital, And University of Helsinki, Helsinki, Finland.
Guido IaccarinoDepartment of Advanced Biomedical Sciences, Federico II University, Napoli, Italy.
Ludger KlimekCenter for Rhinology and Allergology, Wiesbaden, Germany.
Piotr KunaDivision of Internal Medicine, Asthma and Allergy, Barlicki University Hospital, Medical University of Lodz, Poland.
Erik MelénInstitute of Environmental Medicine, Karolinska Institutet and Sachs' Children's Hospital, Stockholm, Sweden.
Joaquim MullolRhinology Unit & Smell Clinic, ENT Department, Hospital Clinic - Clinical & Experimental Respiratory Immunoallergy, IDIBAPS, CIBERES, Universitat de Barcelona, Barcelona, Spain.
Boleslaw SamolinskiDepartment of Prevention of Environmental Hazards and Allergology, Medical University of Warsaw, Poland.
Arunas ValiulisVilnius University Faculty of Medicine, Institute of Clinical Medicine & Institute of Health Sciences, Vilnius, Lithuania.
Josep M AntoIMIM (Hospital del Mar Research Institute), Barcelona, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

COVID-19 is described in a clinical case involving a patient who proposed the hypothesis that Nuclear factor (erythroid-derived 2)-like 2 (Nrf2)-interacting nutrients may help to prevent severe COVID-19 symptoms. Capsules of broccoli seeds containing glucoraphanin were being taken before the onset of SARS-CoV-2 infection and were continued daily for over a month after the first COVID-19 symptoms. They were found to reduce many of the symptoms rapidly and for a duration of 6-12 h by repeated dosing. When the patient was stable but still suffering from cough and nasal obstruction when not taking the broccoli capsules, a double-blind induced cough challenge confirmed the speed of onset of the capsules (less than 10 min). A second clinical case with lower broccoli doses carried out during the cytokine storm confirmed the clinical benefits already observed. A third clinical case showed similar effects at the onset of symptoms. In the first clinical trial, we used a dose of under 600 μmol per day of glucoraphanin. However, such a high dose may induce pharmacologic effects that require careful examination before the performance of any study. It is likely that the fast onset of action is mediated through the TRPA1 channel. These experimental clinical cases represent a proof-of-concept confirming the hypothesis that Nrf2-interacting nutrients are effective in COVID-19. However, this cannot be used in practice before the availability of further safety data, and confirmation is necessary through proper trials on efficacy and safety.

Indexed as

ACE, Angiotensin converting enzymeAT1R, Angiotensin II receptor type 1BMI, Body mass indexBroccoliBroccoli, Broccoli seed capsulesCough challengeCOVID-19COVID-19, Coronavirus 19 diseaseNAPQI, N-acetyl-p-benzoquinone imineNrf2Nrf2, Nuclear factor (erythroid-derived 2)-like 2SARS-Cov-2, Severe acute respiratory syndrome coronavirus 2SARS, Severe acute respiratory syndromeTRPA1TRPA1, Transient receptor potential ankyrin 1TRP, Transient receptor potentialTRPV1TRPV1, Transient receptor potential vanillin 1VAS, Visual analogue scale

Identifiers

PMID33425204
PMCPMC7770975

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.