Cycloferon as a Means for Prevention, Treatment, and Control of COVID-19: Multidisciplinary and Comparative Historical Aspects.

The study of coronaviruses, including those capable of causing life-threatening diseases, continued for many decades. So did the study of interferons, as well as acridine acetic acid, which is a powerful interferon inducer. For a long time, both directions of research developed in parallel to each other. However, the discovery of SARS-CoV and the creation of Cycloferon based on acridine acetic acid made both research directions converge. To date, the abundance of factual and theoretical tenets is enough to estimate the potential effectiveness of acridine acetic acid against COVID-19.Copyright © Team of Authors, 2022.

Antimicrobial Resistance: The Potent Enemy Lurking Behind COVID-19

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has emerged as a global pandemic due to its high transmissibility and pathogenicity. It is a beta clade zoonotic coron-avirus like severe acute respiratory syndrome coronavirus (SARS-CoV) and middle east respiratory syndrome coronavirus (MERS-CoV). Though no effective medication has been developed against the deadly COVID-19 disease, henceforth old antimicrobial drugs have been repurposed to treat the COVID-19 patients. In this report, a brief account of the used medication and the potential mechanism of antimicrobial drugs against SARS-CoV-2 has been provided. Based on the earlier in-cidences, the antimicrobials are expected to lose the battle against SARS-CoV-2. The vast lacuna in the research and development of vaccines has led to overuse of the already formulated antimicro-bial drugs, which in turn has led to a distressing problem called "Antimicrobial resistance (AMR)". A complete assay of AMR has been given including its cause, mechanism, spread, and conse-quences. The other two interlinked problems, namely environmental deterioration and secondary in-fections, are elaborated. Moreover, to combat the AMR problem, the way forward has been discussed in detail.Copyright © 2021 Bentham Science Publishers.

Research progress on SARS, MERS and COVID-19 coronavirus

beta-Coronavirus(beta-CoV) contains a type of related viruses that can cause human respiratory infections.It is widespread in nature and can cause serious harm to humans or animals. The infection of the virus has the characteristics of high infectivity, wide epidemic, strong suddenness, and without effective preventive medication, which imposes a large medical burden on the country and patients. This review briefly summarizes the epidemic situation, transmission route, pathogenicity, pathogenesis and latest progress in drugs and vaccines of acute respiratory syndrome coronavirus(SARS-CoV), Middle East respiratory syndrome coronavirus(MERS-CoV) and the severe acute respiratory syndrome coronavirus 2(SARS-COV-2) since December 2019.

An Overview of Novel Coronavirus Disease 2019: A Global Havoc

The world has been pushed to the edge of a precipice commonly been addressed to as Coronavirus S (SARS-CoV2), one of the world's most widespread viral pandemic in recent times. Many studies are underway and investigating the new role of existing drugs, exploring the safety and efficacy of recently developed vaccines, after getting detailed insights into the behavioural characteristics of SARS-CoV2. Presently supportive and symptomatic treatment, along with practices like disease surveil-lance, contact tracing, and early diagnosis may help control the future of COVID-19 outbreaks. An ef-fort has been made to compile the information about coronavirus;its clinical manifestations, differential diagnosis, preventive aspects, and therapeutic options as a review.Copyright © 2021 Bentham Science Publishers.

Antiviral activity of Humulus lupulus (HOP) aqueous extract against MERS-CoV and SARS-CoV-2: in-vitro and in-silico study

Coronaviruses emerged three times in the last two decades and became a source of concern globally. Humulus lupulus plant has been used widely in medical science. Our objective in this study was to determine the effects of the crude extract of H. lupulus in inhibiting MERS-CoV and SARS-CoV-2 viruses' replication in vitro using Vero E6 cell lines and predict the antiviral activity of its identified compounds against the receptor binding (RBD) protein of both viruses in silico. We determined the concentration of the extract that induced less than 50% cell toxicity (CC50), and the antiviral activity based on IC50 and plaque reduction assay. We used molecular docking simulation to predict the potential of known active compounds in H. lupulus to inhibit the RBD protein. H. lupulus extract showed very low toxicity on Vero E6 cells with CC50= 23.25 µg/µL and antiviral activity toward MERS-CoV and SARS-CoV-2 with IC50= 0.18 and 0.9 µg/µL, respectively. The crude extract showed inhibition rate of 84.6% with MERS-CoV and 80% with SARS-CoV-2. In silico analysis predicted the compounds 5′-prenylxanthohumo, xanthogalenol, dehydrocycloxanthohumol hydrate, 6-prenylnaringenin, isoxanthohumol, catechin gallate, epicatechin gallate, 8-prenylnaringenin and xanthohumol to inhibit MERS-CoV and SARS-CoV-2 invasion of host cells by interfering with viral spike protein and the host cell receptor recognition process. Drug likeness and toxicity risk prediction analysis confirmed their capability as potential drugs. Based on our findings, isolation, purification and testing of the suggested active compounds could lead to novel anti-coronavirus drugs. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

On the Healthy and Nutritional Diet During COVID-19 PANDEMIC

The entire world faces COVID-19 outbreak in the year 2019 and 2020. Corona viruses are a large family of viruses that exist in many different species of animals including camels, bovine animals, and bats. The new strain of corona virus identified as the cause of outbreaks of respiratory disease in people first detected in Wuhan, China, was COVID-19. WHO has published a new guide on how to eat healthily during the COVID-19 COVID pandemic and self-quarantine. The guideline contains valuable information about nutrition to help keep the immune system strong. It also has tips for a diet that supports good health while many of us are advised to stay at home and may have less opportunity to consume fresh foods and be physically active The FDA continues important research to protect public health during the COVID-19 pandemic along with other federal, state, and local agencies and public health officials around the country.

The emergence of Covid-19: evolution from endemic to pandemic.

Human race has survived several outbreak of pandemics in the past and their impact was long lasting. Some of the recent pandemics have been caused by a viruses known as Coronaviruses (CoVs) which are diverse, complex, adaptable viruses that have a significant impact on human health and animal productivity. The novel coronavirus that emerged in Wuhan, China (SARS-CoV-2) in 2019 has quickly spread throughout the world. Human coronaviruses (HCoVs), including severe acute respiratory syndrome coronavirus (SARS-CoV) and 2019 novel coronavirus (2019-nCoV, also known as SARS-CoV-2), have led to a global epidemic with high morbidity and mortality. Human pathogenic coronaviruses, SARS-CoV and SARS-CoV-2, bind to their target cells through angiotensin-converting enzyme 2 (ACE2), which is expressed by epithelial cells of the lung, intestine, kidneys, and blood vessels. The efforts to contain the virus are undergoing throughout the world, given the many uncertainties regarding pathogen transmissibility and virulence. Thus, the ongoing studies to promote the understanding of HCoVs will help to avoid or/and minimize the impact of anticipated pandemics in future.

The green tea catechin epigallocatechin gallate inhibits SARS-CoV-2 infection.

The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection has caused a pandemic with tens of millions of cases and more than a million deaths. The infection causes COVID-19, a disease of the respiratory system of divergent severity. No treatment exists. Epigallocatechin-3-gallate (EGCG), the major component of green tea, has several beneficial properties, including antiviral activities. Therefore, we examined whether EGCG has antiviral activity against SARS-CoV-2. EGCG blocked not only the entry of SARS-CoV-2, but also MERS- and SARS-CoV pseudotyped lentiviral vectors and inhibited virus infections in vitro. Mechanistically, inhibition of the SARS-CoV-2 spike-receptor interaction was observed. Thus, EGCG might be suitable for use as a lead structure to develop more effective anti-COVID-19 drugs.