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      AYUSH- 64: A Potential Therapeutic Agent in COVID-19

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          Abstract

          Corona Virus disease (COVID-19) has become a global pandemic resulting in large scale morbidity and mortality worldwide. The causative agent SARS-CoV-2 is easily subject to repeated mutation with swift spread of infection. The management of COVID-19 has been a big challenge on account of non-availability of specific therapeutic agents. The complex and multifactorial pathophysiology of COVID-19 requires therapeutic agents with anti-viral properties against SARS-CoV-2 as well as immunomodulatory properties that have a broad-spectrum effectiveness covering the disease in totality. AYUSH-64, a poly-herbal formulation developed by CCRAS, Ministry of AYUSH, Govt. of India through extensive pharmacological, toxicological and clinical studies has proven efficacy in infective febrile conditions such as malaria, micro filaremia, chikungunya and influenza with no safety issues observed in published clinical studies. Based on the empirical evidence, it has been repurposed as an adjuvant to standard care or standalone therapy for asymptomatic and mild to moderate cases of COVID- 19 by the Ministry of AYUSH at a time when India is experiencing wave after wave of COVID-19 variants causing mass distress to the healthcare delivery systems. AYUSH- 64 has four ingredients having immune-modulator, anti-inflammatory, antipyretic, antioxidant and anti-viral activities. These effects could arrest the extreme inflammatory responses in COVID-19 that causes progression to significant morbidity. Several clinical studies on AYUSH-64 in asymptomatic and mild to moderate cases of COVID-19 have been undertaken at reputed medical institutions across the country. The evidence generated through these studies is promising. AYUSH-64 has also been incorporated in the National COVID management protocol based on Ayurveda and Yoga by Government of India for asymptomatic and mild cases of COVID-19. Further, on the basis of tangible evidence generated through robust clinical and experimental studies on AYUSH-64, the Ministry of AYUSH has launched nation-wide campaign for mass distribution of AYUSH-64 to asymptomatic, mild to moderate COVID-19 patients in home isolation to reduce the burden on the hospital-based health care delivery system. This review will highlight about the specifications of AYUSH-64, its probable mechanism of action, its repurposing for COVID-19, various clinical and experimental studies undertaken during the COVID-19 pandemic and the initiatives taken to translate the outcomes of these studies on AYUSH-64 .

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          Most cited references36

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          Review of the Clinical Characteristics of Coronavirus Disease 2019 (COVID-19)

          In late December 2019, a cluster of cases with 2019 Novel Coronavirus pneumonia (SARS-CoV-2) in Wuhan, China, aroused worldwide concern. Previous studies have reported epidemiological and clinical characteristics of coronavirus disease 2019 (COVID-19). The purpose of this brief review is to summarize those published studies as of late February 2020 on the clinical features, symptoms, complications, and treatments of COVID-19 and help provide guidance for frontline medical staff in the clinical management of this outbreak.
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            ACE2 links amino acid malnutrition to microbial ecology and intestinal inflammation

            Mutations in angiotensin-converting enzyme 2 are shown to predispose mice to colitis as a consequence of neutral amino acid malabsorption and a change in the resident microbiota; these results could explain how protein malnutrition — affecting up to one billion people — leads to intestinal inflammation. Supplementary information The online version of this article (doi:10.1038/nature11228) contains supplementary material, which is available to authorized users.
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              Is Open Access

              SARS-CoV-2 binds platelet ACE2 to enhance thrombosis in COVID-19

              Background Critically ill patients diagnosed with COVID-19 may develop a pro-thrombotic state that places them at a dramatically increased lethal risk. Although platelet activation is critical for thrombosis and is responsible for the thrombotic events and cardiovascular complications, the role of platelets in the pathogenesis of COVID-19 remains unclear. Methods Using platelets from healthy volunteers, non-COVID-19 and COVID-19 patients, as well as wild-type and hACE2 transgenic mice, we evaluated the changes in platelet and coagulation parameters in COVID-19 patients. We investigated ACE2 expression and direct effect of SARS-CoV-2 virus on platelets by RT-PCR, flow cytometry, Western blot, immunofluorescence, and platelet functional studies in vitro, FeCl3-induced thrombus formation in vivo, and thrombus formation under flow conditions ex vivo. Results We demonstrated that COVID-19 patients present with increased mean platelet volume (MPV) and platelet hyperactivity, which correlated with a decrease in overall platelet count. Detectable SARS-CoV-2 RNA in the blood stream was associated with platelet hyperactivity in critically ill patients. Platelets expressed ACE2, a host cell receptor for SARS-CoV-2, and TMPRSS2, a serine protease for Spike protein priming. SARS-CoV-2 and its Spike protein directly enhanced platelet activation such as platelet aggregation, PAC-1 binding, CD62P expression, α granule secretion, dense granule release, platelet spreading, and clot retraction in vitro, and thereby Spike protein enhanced thrombosis formation in wild-type mice transfused with hACE2 transgenic platelets, but this was not observed in animals transfused with wild-type platelets in vivo. Further, we provided evidence suggesting that the MAPK pathway, downstream of ACE2, mediates the potentiating role of SARS-CoV-2 on platelet activation, and that platelet ACE2 expression decreases following SARS-COV-2 stimulation. SARS-CoV-2 and its Spike protein directly stimulated platelets to facilitate the release of coagulation factors, the secretion of inflammatory factors, and the formation of leukocyte–platelet aggregates. Recombinant human ACE2 protein and anti-Spike monoclonal antibody could inhibit SARS-CoV-2 Spike protein-induced platelet activation. Conclusions Our findings uncovered a novel function of SARS-CoV-2 on platelet activation via binding of Spike to ACE2. SARS-CoV-2-induced platelet activation may participate in thrombus formation and inflammatory responses in COVID-19 patients.
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                Author and article information

                Contributors
                Role: Research Officer (Ay.)
                Role: Principal and Medical Superintendent
                Role: Research Officer (Ay.)
                Role: Assistant Director (Ay.)
                Role: Director General Incharge
                Journal
                J Ayurveda Integr Med
                J Ayurveda Integr Med
                Journal of Ayurveda and Integrative Medicine
                The Authors. Published by Elsevier B.V. on behalf of Institute of Transdisciplinary Health Sciences and Technology and World Ayurveda Foundation
                0975-9476
                0976-2809
                4 January 2022
                4 January 2022
                : 100538
                Affiliations
                [a ]Central Ayurveda Research Institute for Hepatobiliary Disorders, Bhubaneswar, Central Council of Research in Ayurveda Sciences, Ministry of AYUSH, Govt. of India
                [b ]JSS Ayurveda Medical College &Hospital, Mysore, Karnataka
                [c ]Central Council of Research in Ayurveda Sciences, Ministry of AYUSH, Govt. of India
                Author notes
                []Corresponding author. Central Ayurveda Research Institute for Hepatobiliary Disorders, Bhubaneswar, Central Council of Research in Ayurveda Sciences, Ministry of AYUSH, Govt. of India. ;. Mobile-9434631670.
                Article
                S0975-9476(21)00227-8 100538
                10.1016/j.jaim.2021.100538
                8723836
                f2bfdd45-fd5a-4928-9481-55939b891b0a
                © 2021 The Authors

                Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

                History
                : 9 July 2021
                : 23 August 2021
                : 10 December 2021
                Categories
                Review Article

                Complementary & Alternative medicine
                ayush-64,covid-19,corona virus disease,immunomodulation,sars-cov-2,ayurveda

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