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Current status of traditional Chinese medicine for the treatment of COVID-19 in China.

ABSTRACT: An ongoing outbreak of severe respiratory illness and pneumonia caused by the severe acute respiratory coronavirus 2 (SARS-CoV-2) commenced in December 2019, and the disease was named as coronavirus disease 2019 (COVID-19). Soon after, scientists identified the characteristics of SARS-CoV-2, including its genome sequence and protein structure. The clinical manifestations of COVID-19 have now been established; and nucleic acid amplification is used for the direct determination of the virus, whereas immunoassays can determine the antibodies against SARS-CoV-2. Clinical trials of several antiviral drugs are ongoing. However, there is still no specific drugs to treat COVID-19. Traditional Chinese medicine (TCM) was used in the treatment of COVID-19 during the early stages of the outbreak in China. Some ancient TCM prescriptions, which were efficacious in the treatment of severe acute respiratory syndrome (SARS) in 2002-03 and the influenza pandemic (H1N1) of 2009, have been improved by experienced TCM practitioners for the treatment of COVID-19 based on their clinical symptoms. These developed new prescriptions include Lianhua Qingwen capsules/granules, Jinhua Qinggan granules and XueBiJing injection, among others. In this review, we have summarized the presenting features of SARS-CoV-2, the clinical characteristics of COVID-19, and the progress in the treatment of COVID-19 using TCMs.

SUBMITTER: Chu L

PROVIDER: S-EPMC8314260 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Introduction:The World Health Organization has declared the coronavirus disease (COVID-19) as a pandemic on 11 March 2020, after the number of confirmed cases outside China increased 13-fold. As the epicentre of the initial outbreak, China has been updating the National COVID-19 Diagnostic and Treatment Guideline with up-to-date information about the disease. To facilitate the implementation of integrative Chinese-Western Medicine in COVID-19 management, Traditional Chinese medicine (TCM) has been recommended in recent editions of the national guideline. Methods:The national guideline summarised the opinions and frontline experience of medical experts across the country to provide by far the best management for COVID-19. We extracted the case definition and clinical classifications of COVID-19 in China along with relevant TCM treatments cited in the seventh edition of the guideline, with an intend to disseminate practical information to TCM practitioners and researchers around the world. Results:We presented the most recent case definition, clinical classifications, and relevant TCM treatments of COVID-19 in accordance to recommendations of the Chinese guideline. TCM treatments are stratified into two groups based on patients' disease status. Four types of Chinese patent medicines are recommended for suspected COVID-19 cases. Several herbal formulae are recommended for confirmed COVID-19 cases according to their clinical classification and TCM pattern diagnoses. Two herbal formulae are also recommended for rehabilitation of recovering cases. Conclusion:To control the waves of COVID-19 outbreak, countries must ensure the adherence of their citizens to local public health measures. Medical professionals should diagnose and treat patients according to up-to-date guidelines. Future evaluation of the outcomes of implementing TCM recommendations will strengthen the evidence base for COVID-19 management for the sake of public health and the internationalisation of TCM.

Project description:Coronavirus disease 2019 (COVID-19) has caused huge deaths and economic losses worldwide in the current pandemic. The main protease (Mpro) of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is thought to be an ideal drug target for treating COVID-19. Leupeptin, a broad-spectrum covalent inhibitor of serine, cysteine, and threonine proteases, showed inhibitory activity against Mpro, with a 50% inhibitory concentration (IC50) value of 127.2 μM in vitro in our study here. In addition, leupeptin can also inhibit SARS-CoV-2 in Vero cells, with 50% effective concentration (EC50) values of 42.34 μM. More importantly, various strains of streptomyces that have a broad symbiotic relationship with medicinal plants can produce leupeptin and leupeptin analogs to regulate autogenous proteases. Fingerprinting and structure elucidation using high-performance liquid chromatography (HPLC) and high-resolution mass spectrometry (HRMS), respectively, further proved that the Qing-Fei-Pai-Du (QFPD) decoction, a traditional Chinese medicine (TCM) formula for the effective treatment of COVID-19 during the period of the Wuhan outbreak, contains leupeptin. All these results indicate that leupeptin at least contributes to the antiviral activity of the QFPD decoction against SARS-CoV-2. This also reminds us to pay attention to the microbiomes in TCM herbs as streptomyces in the soil might produce leupeptin that will later infiltrate the medicinal plant. We propose that plants, microbiome, and microbial metabolites form an ecosystem for the effective components of TCM herbs. IMPORTANCE A TCM formula has played an important role in the treatment of COVID-19 in China. However, the mechanism of TCM action is still unclear. In this study, we identified leupeptin, a metabolite produced by plant-symbiotic actinomyces (PSA), which showed antiviral activity in both cell culture and enzyme assays. Moreover, leupeptin found in the QFPD decoction was confirmed by both HPLC fingerprinting and HRMS. These results suggest that leupeptin likely contributes to the antiviral activity of the QFPD decoction against SARS-CoV-2. This result gives us important insight into further studies of the PSA metabolite and medicinal plant ecosystem for future TCM modernization research.

Project description:In December 2019, the coronavirus disease 2019 (COVID-19) caused by the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was discovered. Since its emergence, COVID-19 has been outbreaking rapidly worldwide, where the virus has so far caused the death of hundreds of thousands and infected more than a million, what has been called a pandemic by the World Health Organization (WHO). According to the WHO-Coronavirus disease 2019 Situation Report-142, by June 10, 2020, there are 7,145,539 confirmed cases and 408,025 deaths. There is an urgent need to develop a suitable specific medicine against this novel coronavirus; therefore, scientists and researchers around the world are making great efforts endeavoring to discover an efficient specific medication for COVID-19 treatment. Given the similarity of the novel coronavirus with previous epidemic viruses, namely, the acute respiratory syndrome coronavirus (SARS-CoV) and the Middle East respiratory syndrome coronavirus (MERS-CoV), previously tested drugs could potentially work against the novel coronavirus. In this narrative review, we aim to summarize and discuss the effectiveness of current Western medicine and traditional Chinese medicine options for COVID-19 treatment based on the overview of the scientific literature. Some Western medicines including remdesivir, chloroquine, hydroxychloroquine, favipiravir, lopinavir/ritonavir, and arbidol, as well as some traditional Chinese medicine (TCM) such as Qingfei Paidu decoction, Yupingfeng, Lianhua Qingwen, and TCM injections have revealed a relative activity against SARS-CoV-2 in vitro, in observational studies, and in clinical trials. However, further extensive studies and clinical trials including double-blind and randomized clinical trials, with a higher number of patients, are necessary to confirm the activity of these medicines. There are several ongoing trials conducted on the drugs of COVID-19, and the results are urgently needed to make a suitable treatment recommendation.

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Current status of traditional Chinese medicine for the treatment of COVID-19 in China.

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