Advancing combination treatment with glycyrrhizin and boswellic acids for hospitalized patients with moderate COVID-19 infection: a randomized clinical trial
Adel A Gomaa, Hamdy S Mohamed, Rasha B Abd-Ellatief, Mohamed A Gomaa, Doaa S Hammam
Inflammopharmacology, doi:10.1007/s10787-022-00939-7
Recent evidence points to a potential therapeutic role for glycyrrhizin(GR) and boswellic acids (BA) in the treatment of COVID-19 but conclusive evidence is lacking. Our aim is to investigate the efficacy of GR + BA versus placebo for the treatment of hospitalized patients with moderate SARS-CoV-2 or COVID-19 variants infection. The current study is a randomized, double-blind, placebo-controlled, single-center trial. Patients with SARS-CoV-2 or COVID-19 variants diagnosed by PCR test who were admitted to Sohag University hospital were eligible if they were at least 18 years of age and had moderate symptoms. Patients were randomly assigned to receive oral GR capsule (60 mg) and BA (200 mg) twice daily for 14 days or a matching placebo. All patients also received treatment with the institutional protocol for COVID-19. The primary outcome was mortality and time to recovery. Secondary outcome was clinical status score, 14 days after receiving study drugs. Adverse events from use of study drugs have been evaluated for up to 14 days. The trial is registered at ClinicalTrials.gov (Identifier NCT04487964). During the 6-month enrollment period (June-November, 2021) only 50 patients (54% women; median age 60 years, IQR 54-65) met eligibility and were randomly assigned. Evaluation of the primary outcome at 14 days showed that there were five deaths in the placebo group and no deaths in the GR + BA group. With regard to recovery time, it was significantly shorter (p = 0.0001) in the group receiving GR + BA capsule compared to the placebo group (median 7.0; IQR 6.0-8.0 days vs. median 12.5; IQR 12-20 days). Clinical status on the ordinal score scale as a secondary outcome showed a significant difference between the GR + BA group (median (IQR) score, 2 [2-3]) and placebo groups (mean (IQR) score, 3 [3-5.5]). There was a significant decrease in CRB (p = 0.000041) in GR + BA compared with the placebo group. In conclusion, this safe, inexpensive, antiviral, immunomodulating and anti-inflammatory combination may be considered for use in mild to moderate infections of SARS-CoV-2 or COVID-19 variants. The study is limited by the small sample size; therefore, larger randomized trials are required.
Keywords COVID-19 • Glycyrrhizin • Boswellic aids • Mortality rate • Time to recovery • Clinical status score Abbreviations BA Boswellic acids ACE2 Angiotensin-converting enzyme 2 COVID-19 Coronavirus disease 2019 CRB C-reactive protein GR Glycyrrhizin HMGB1 High-mobility group box 1 protein HsGAPDH Human GAPDH IQR Interquartile rang NLRP3 Nod-like receptor protein3 NF-κB3 Nuclear factor kappa B3 SARS-CoV-2 Severe acute respiratory syndrome coronavirus-2 Inflammopharmacology * Adel A. Gomaa
Author contributors Concept and design was done by AAG; acquisition, analysis, or interpretation of data was done by AAG, HSM, RBA, MAG, and DSH; drafting of the manuscript was done by AAG and MAG; critical revision of the manuscript for important intellectual content was done by AAG, HSM and RBA; statistical analysis was done by AAG, MAG and DSH; supervision was provided by AAG, HSM and RBA.
Declarations Conflict of interest All authors declare no competing interests.
Ethical approval The study was approved by the local ethical committee of the Faculty of Medicine, Assiut University, Egypt, complying with international standards of clinical trials (IRB No: 17101070; 6/5/2020) and was registered on ClinicalTrials.gov (Identifier NCT04487964). Consent to participate Informed consent to participate in the study has been obtained from participants and a form of consent is included as supplement. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative..
References
Ahmad, Waheed, Abro, Abbasi, Ismail, Molecular screening of glycyrrhizin-based inhibitors against ACE2 host receptor of SARS-CoV-2, J Mol Model,
doi:10.1007/s00894-021-04816-y
Alam, Sarker, Afrin, Richi, Zhao, Traditional herbal medicines, bioactive metabolites, and plant products against covid-19: update on clinical trials and mechanism of actions, Front Pharmacol,
doi:10.3389/fphar.2021.671498
Badria, Abu-Karam, Mikhaeil, Anti-herpes activity of isolated compounds from frankincense, Biosci Biotechnol Res Asia
Baram, Karima, Shateri, Functional improvement and immune-inflammatory cytokines profile of ischaemic stroke patients after treatment with boswellic acids: a randomized, double-blind, placebo-controlled, pilot trial, Inflammopharmacology,
doi:10.1007/s10787-019-00627-z
Beghelli, Isani, Roncada, Antioxidant and ex vivo immune system regulatory properties of Boswellia serrate extracts, Oxid Med Cell Longev,
doi:10.1155/2017/7468064
Bignardi, Vengrus, Aquino, Cerci, Use of hydroxychloroquine and chloroquine in patients with COVID-19: a meta-analysis of randomized clinical trials, Pathog Glob Health,
doi:10.1080/20477724.2021.1884807
Caliebe, Scior, Ammon, Binding of boswellic acids to functional proteins of the SARS-CoV-2 virus: Bioinformatic studies, Arch Pharm,
doi:10.1002/ardp.202100160
Cheng, Hu, Zuo, Predictors of progression from moderate to severe coronavirus disease 2019: a retrospective cohort, Clin Microbiol Infect
Choi, Tian, Manohar, Harraz, Park, Human GAPDH is a target of aspirin's primary metabolite salicylic acid and its derivatives, PLoS ONE,
doi:10.1371/journal.pone.0143447
Choi, Tian, Song, Venereau, Preti et al., Aspirin's active metabolite salicylic acid targets high mobility group box 1 to modulate inflammatory responses, Mol Med,
doi:10.2119/molmed.2015.00148
Diomede, Beeg, Gamba, Fumagalli, Gobbi et al., Can antiviral activity of licorice help fight COVID-19 infection?, Biomolecules,
doi:10.3390/biom11060855
Eltahir, Fawzy, Mohamed, Antioxidant, antiinflammatory and anti-fibrotic effects of Boswellia serrate gum resin in CCl4-induced hepatotoxicity, Exp Ther Med,
doi:10.3892/etm.2019.8353
Gomaa, Mohamed, Abd-Ellatief, Gomaa, Boswellic acids/Boswellia serrata extract as a potential COVID-19 therapeutic agent in the elderly, Inflammopharmacology,
doi:10.1007/s10787-021-00841-8
Gomaa, Ya, The potential of glycyrrhizin and licorice extract in combating COVID-19 and associated conditions, Phytomedicine plus,
doi:10.1016/j.phyplu.2021.100043
Goswami, Mahapatra, Banerjee, Kar, Ojha et al., Boswellia serrata oleo-gum-resin and β-boswellic acid inhibits HSV-1 infection in vitro through modulation of NF-кB and p38 MAP kinase signaling, Phytomedicine,
doi:10.1016/j.phymed.2018.10.016
Guan, Liang, Zhao, Liang, Chen, China Medical Treatment Expert Group for COVID-19. Comorbidity and its impact on 1590 patients with COVID-19 in China: a nationwide analysis, Eur Respir J,
doi:10.1183/13993003.00547-2020
Huan, Xu, Zhang, Guo, Pan et al., Research progress on the antiviral activity of glycyrrhizin and its derivatives in liquorice, Front Pharmacol,
doi:10.3389/fphar.2021.680674
Jin, Cai, Cheng, A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus (2019-nCoV) infected pneumonia (standard version, Mil Med Res
Kadhim, Washeel Salman, Zarzoor, Kadhum, Inhibition of SARS-CoV-2 reproduction using Boswellia carterii: a theoretical study, J Mol Liq,
doi:10.1016/j.molliq.2021.116440
Kimmatkar, Thawani, Hingorani, Khiyani, Efficacy and tolerability of Boswellia serrata extract in treatment of osteoarthritis of knee-a randomized double blind placebo controlled trial, Phytomedicine,
doi:10.1078/094471103321648593
Li, Xu, Wang, Zhang, Zhang et al., Glycyrrhizic acid inhibits SARS-CoV-2 infection by blocking spike proteinmediated cell attachment, Molecules,
doi:10.3390/molecules26206090
Lopes, Bonjorno, Giannini, Beneficial effects of colchicine for moderate to severe COVID-19: a randomised, double-blinded, placebo-controlled clinical trial, RMD Open,
doi:10.1136/rmdopen-2020-001455
Majeed, Majeed, Narayanan, Nagabhushanam, A pilot, randomized, double-blind, placebo-controlled trial to assess the safety and efficacy of a novel Boswellia serrata extract in the management of osteoarthritis of the knee, Phytother Res,
doi:10.1002/ptr.6338
Majeed, Nagabhushanam, Lawrence, Nallathambi, Thiyagarajan et al., Boswellia serrata extract containing 30% 3-acetyl-11-keto-boswellic acid attenuates inflammatory mediators and preserves extracellular matrix in collagen-induced arthritis, Front Physiol,
doi:10.3389/fphys.2021.735247
Maroon, Bost, Maroon, Natural anti-inflammatory agents for pain relief, Surg Neurol Int
Mehta, Mcauley, Brown, COVID-19: consider cytokine storm syndromes and immunosuppression, Lancet
Mollica, Marchis, Spitaleri, Dallacosta, Pennacchini, Glycyrrhizin binds to high-mobility group box 1 protein and inhibits its cytokine activities, Chem Biol,
doi:10.1016/j.chembiol.2007.03.007
Ng, Khaw, Ong, Goh, Kifli, Licorice: a potential herb in overcoming SARS-CoV-2 infections, J Evid Based Integr Med,
doi:10.1177/2515690X21996662
Rabaan, Sh, Muhammad, Khan, Sule, Role of inflammatory cytokines in COVID-19 patients: a review on molecular mechanisms, immune functions, immunopathology and immunomodulatory drugs to counter cytokine storm, Vaccines,
doi:10.3390/vaccines9050436
Rayner, Dron, Park, Accelerating clinical evaluation of repurposed combination therapies for COVID-19, Am J Trop Med Hyg
Rejekia, Sarnadia, Wihastutia, Fazharyastia, Convalescent plasma therapy in patients with moderate-to-severe COVID-19: a study from Indonesia for clinical research in lowand middle-income countries, Eclinical Medicine
Reyes, Hu, Teperman, Anti-inflammatory therapy for COVID-19 infection: the case for colchicine, Ann Rheum Dis
Rodrigues, De Sa, Ishimoto, Inflammasomes are activated in response to SARS-CoV-2 infection and are associated with COVID-19 severity in patients, J Exp Med
Roy, Parama, Banik, Bordoloi, Devi, An update on pharmacological potential of boswellic acids against chronic diseases, Int J Mol Sci,
doi:10.3390/ijms20174101
Ruan, Yang, Clinical predictors of mortality due to COVID-19 based on an analysis of data of 150 patients from Wuhan, China, Intensive Care Med
Si, Meng, Tian, Triterpenoids manipulate a broad range of virus-host fusion via wrapping the HR2 domain prevalent in viral envelopes, Sci Adv,
doi:10.1126/sciadv.aau8408
Siddiqi, Mehra, COVID-19 illness in native and immunosuppressed states: a clinical-therapeutic staging proposal, J Heart Lung Transplant
Sun, He, Huang, Thilakavathy, Lim et al., Glycyrrhizic acid: a natural plant ingredient as a drug candidate to treat COVID-19, Front Pharmacol,
doi:10.3389/fphar.2021.707205
Van De Sand, Bormann, Alt, Schipper, Heilingloh, Glycyrrhizin effectively inhibits SARS-CoV-2 replication by inhibiting the viral main protease, Viruses,
doi:10.3390/v13040609
Von Rhein, Weidner, Hens, Curcumin and Boswellia serrata gum resin extract inhibit chikungunya and vesicular stomatitis virus infections in vitro, Antiviral Res,
doi:10.1016/j.antiviral.2015.11.007
Who, Clinical management of COVID-19
Wu, Mcgoogan, Characteristics of and important lessons from the coronavirus disease 2019 (COVID-19) outbreak in china: summary of a report of 72 314 cases from the chinese center for disease control and prevention, JAMA
Xiao, Tian, Wang, Recent progress in the antiviral activity and mechanism study of pentacyclic triterpenoids and their derivatives, Med Res Rev,
doi:10.1002/med.21484
Xu, Li, Ju, Lai, Lu, A multicenter, randomized, double-blind, placebo-controlled study of compound glycyrrhizin capsules combined with a topical corticosteroid in adults with chronic eczema, Evid Based Complement Alternat Med,
doi:10.1155/2020/6127327
Zhang, Huang, -Z, Qiu, Wu et al., Traditional uses, pharmacological effects, and molecular mechanisms of licorice in potential therapy of COVID-19, Front Pharmacol,
doi:10.3389/fphar.2021.719758
Zhang, Penninger, Li, Zhong, Slutsky, Angiotensin-converting enzyme 2 (ACE2) as a SARS-CoV-2 receptor: molecular mechanisms and potential therapeutic target, Intensive Care Med,
doi:10.1007/s00134-020-05985-9
Zhang, Xiang, Huo, Zhou, Jiang et al., Molecular mechanism of interaction between SARS-CoV-2 and host cells and interventional therapy, Signal Transduct Target Ther,
doi:10.1038/s41392-021-00653-w
Zhao, Zhao, NLRP3 inflammasome-a key player in antiviral responses, Front Immunol
Zheng, Huang, Lai, Liu, Jiang et al., Glycyrrhizic acid for covid-19: findings of targeting pivotal inflammatory pathways triggered by SARS-CoV-2, Front Pharmacol,
doi:10.3389/fphar.2021.631206
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],
"subtitle": [],
"title": [
"Advancing combination treatment with glycyrrhizin and boswellic acids for hospitalized patients with moderate COVID-19 infection: a randomized clinical trial"
],
"type": "journal-article",
"update-policy": "http://dx.doi.org/10.1007/springer_crossmark_policy",
"volume": "30"
}