scholarly journals Can phytotherapy with polyphenols serve as a powerful approach for the prevention and therapy tool of novel coronavirus disease 2019 (COVID-19)?

2020 ◽  
Vol 319 (4) ◽  
pp. E689-E708 ◽  
Author(s):  
Emile Levy ◽  
Edgard Delvin ◽  
Valérie Marcil ◽  
Schohraya Spahis

Much more serious than the previous severe acute respiratory syndrome (SARS) coronavirus (CoV) outbreaks, the novel SARS-CoV-2 infection has spread speedily, affecting 213 countries and causing ∼17,300,000 cases and ∼672,000 (∼+1,500/day) deaths globally (as of July 31, 2020). The potentially fatal coronavirus disease (COVID-19), caused by air droplets and airborne as the main transmission modes, clearly induces a spectrum of respiratory clinical manifestations, but it also affects the immune, gastrointestinal, hematological, nervous, and renal systems. The dramatic scale of disorders and complications arises from the inadequacy of current treatments and absence of a vaccine and specific anti-COVID-19 drugs to suppress viral replication, inflammation, and additional pathogenic conditions. This highlights the importance of understanding the SARS-CoV-2 mechanisms of actions and the urgent need of prospecting for new or alternative treatment options. The main objective of the present review is to discuss the challenging issue relative to the clinical utility of plants-derived polyphenols in fighting viral infections. Not only is the strong capacity of polyphenols highlighted in magnifying health benefits, but the underlying mechanisms are also stressed. Finally, emphasis is placed on the potential ability of polyphenols to combat SARS-CoV-2 infection via the regulation of its molecular targets of human cellular binding and replication, as well as through the resulting host inflammation, oxidative stress, and signaling pathways.

2021 ◽  
Author(s):  
Mayank Kapoor ◽  
Prasan Kumar Panda ◽  
Vivek Mohanty

Most viral infections have limited treatment options available and the same holds for COVID-19, its causative agent being the SARS-CoV-2 virus. Drugs used in the past against Severe Acute Respiratory Syndrome (SARS) or Middle East Respiratory Syndrome (MERS) viruses, which belong to the same family of viruses as the novel Coronavirus included ribavirin, interferon (alfa and beta), lopinavir-ritonavir combination, and corticosteroids. There remains controversy regarding their efficacy to date, except for the last one. Hence, large-scale multicentric trials are being conducted involving multiple drugs. Chloroquine and hydroxy-chloroquine were initially taking the race ahead but have now been rejected. Remdesivir was a promising candidate, for which the FDA had issued an emergency use authorization, but now is not recommended by the WHO. Convalescent plasma therapy had promising results in the early severe viremia phase, but the PLACID trial made an obscure end. Only corticosteroids have shown demonstrable benefits in improving mortality rates among severe COVID-19 cases. Many new modalities like monoclonal antibodies and tyrosine kinase inhibitors are discussed. In this chapter, we review the therapeutic drugs under investigation for the COVID-19 treatment, their mode of action, degree of effectiveness, and recommendations by different centers regarding their use in current settings.


2021 ◽  
Vol 100 (4) ◽  
pp. 74-79
Author(s):  
I.M. Kagantsov ◽  
◽  
V.V. Sizonov ◽  
V.G. Svarich ◽  
K.P. Piskunov ◽  
...  

The novel coronavirus infection (SARS-CoV-2), which first appeared in Wuhan, China in December 2019, has been declared a global pandemic by WHO. COVID-19 affects people of all age groups. The disease in children is usually asymptomatic or mild compared to adults, and with a significantly lower death rates. Data on kidney damage in children with COVID-19, as well as the effect of coronavirus infection on the course of diseases of the genitourinary system, are limited, the risks of contracting a new coronavirus infection in children with significant health problems, including those with chronic kidney disease, remain uncertain. The pandemic has affected the activities of surgeons treating diseases of the urinary system in children. Since the prospects for the end of the pandemic are vague, it is necessary to formulate criteria for selecting patients who can and should be provided with routine care in the pandemic. The purpose of this review is to highlight the features of the clinical manifestations and treatment of children with COVID-19, occurring against the background of previous renal pathology or complicating its course.


2021 ◽  
Vol 4 (11) ◽  
pp. RV1-RV5
Author(s):  
Najmus Sahar ◽  
Pradeep Tangade ◽  
Vikas Singh ◽  
Surbhi Priyadarshini ◽  
Debashis Roy

The novel coronavirus outbreak is a contagious disease affecting the countries around the world. The quick advancing nature of pandemic has gripped the entire community making it a public health emergency. Infection control preventive measures are necessary to prevent it from further spreading. Medical practitioners, health care workers and Dentists are at high risk of acquiring and transmission of infection. The virus transmission occurs through respiratory tract, aerosols and droplets. Clinical manifestations of virus vary from mild to severe sickness. This review article mainly emphasizes on all the information collected to date on the virus, and future recommendations for dental settings to manage the further spread of this virus.


Author(s):  
Zonghao Zhao ◽  
Jiajia Xie ◽  
Ming Yin ◽  
Yun Yang ◽  
Hongliang He ◽  
...  

AbstractThe outbreak of the novel coronavirus disease 2019 (COVID-19) infection began in December 2019 in Wuhan, and rapidly spread to many provinces in China. The number of cases has increased markedly in Anhui, but information on the clinical characteristics of patients is limited. We reported 75 patients with COVID-19 in the First Affiliated Hospital of USTC from Jan 21 to Feb 16, 2020, Hefei, Anhui Province, China. COVID-19 infection was confirmed by real-time RT-PCR of respiratory nasopharyngeal swab samples. Epidemiological, clinical and laboratory data were collected and analyzed. Of the 75 patients with COVID-19, 61 (81.33%) had a direct or indirect exposure history to Wuhan. Common symptoms at onset included fever (66 [88.0%] of 75 patients) and dry cough (62 [82.67%]). Of the patients without fever, cough could be the only or primary symptom. The most prominent laboratory abnormalities were lymphopenia, decreased percentage of lymphocytes (LYM%), decreased CD4+ and CD8+ T cell counts, elevated C-reactive protein (CRP) and lactate dehydrogenase (LDH). Patients with elevated interleukin 6 (IL-6) showed significant decreases in the LYM%, CD4+ and CD8+ T cell counts. Besides, the percentage of neutrophils, CRP, LDH and Procalcitonin levels increased significantly. We concluded that COVID-19 could cause different degrees of hematological abnormalities and damage of internal organs. Hematological profiles including LYM, LDH, CRP and IL-6 could be indicators of diseases severity and evaluation of treatment effectiveness. Antiviral treatment requires a comprehensive and supportive approach. Further targeted therapy should be determined based on individual clinical manifestations and laboratory indicators.


Pathogens ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 231 ◽  
Author(s):  
Firas A. Rabi ◽  
Mazhar S. Al Zoubi ◽  
Ghena A. Kasasbeh ◽  
Dunia M. Salameh ◽  
Amjad D. Al-Nasser

In December 2019, a cluster of fatal pneumonia cases presented in Wuhan, China. They were caused by a previously unknown coronavirus. All patients had been associated with the Wuhan Wholefood market, where seafood and live animals are sold. The virus spread rapidly and public health authorities in China initiated a containment effort. However, by that time, travelers had carried the virus to many countries, sparking memories of the previous coronavirus epidemics, severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), and causing widespread media attention and panic. Based on clinical criteria and available serological and molecular information, the new disease was called coronavirus disease of 2019 (COVID-19), and the novel coronavirus was called SARS Coronavirus-2 (SARS-CoV-2), emphasizing its close relationship to the 2002 SARS virus (SARS-CoV). The scientific community raced to uncover the origin of the virus, understand the pathogenesis of the disease, develop treatment options, define the risk factors, and work on vaccine development. Here we present a summary of current knowledge regarding the novel coronavirus and the disease it causes.


2021 ◽  
Vol 12 ◽  
Author(s):  
Gianmarco Bellucci ◽  
Virginia Rinaldi ◽  
Maria Chiara Buscarinu ◽  
Roberta Reniè ◽  
Rachele Bigi ◽  
...  

Current knowledge on Multiple Sclerosis (MS) etiopathogenesis encompasses complex interactions between the host’s genetic background and several environmental factors that result in dysimmunity against the central nervous system. An old-aged association exists between MS and viral infections, capable of triggering and sustaining neuroinflammation through direct and indirect mechanisms. The novel Coronavirus, SARS-CoV-2, has a remarkable, and still not fully understood, impact on the immune system: the occurrence and severity of both acute COVID-19 and post-infectious chronic illness (long COVID-19) largely depends on the host’s response to the infection, that echoes several aspects of MS pathobiology. Furthermore, other MS-associated viruses, such as the Epstein-Barr Virus (EBV) and Human Endogenous Retroviruses (HERVs), may enhance a mechanistic interplay with the novel Coronavirus, with the potential to interfere in MS natural history. Studies on COVID-19 in people with MS have helped clinicians in adjusting therapeutic strategies during the pandemic; similar efforts are being made for SARS-CoV-2 vaccination campaigns. In this Review, we look over 18 months of SARS-CoV-2 pandemic from the perspective of MS: we dissect neuroinflammatory and demyelinating mechanisms associated with COVID-19, summarize pathophysiological crossroads between MS and SARS-CoV-2 infection, and discuss present evidence on COVID-19 and its vaccination in people with MS.


2021 ◽  
Vol VI (I) ◽  
pp. 1-9
Author(s):  
Naiha Tahir ◽  
Ayema Rehman ◽  
Muhammad Zain ◽  
Mubashir Rehman

The novel Coronavirus knew as Covid 19 or SARS-CoV-2, is a newly discovered virus responsible for the huge global pandemic infecting the human race at a deadly pace. This is an RNA enveloped virus that targets the human respiratory system severely while damaging other major systems. Covid 19 pandemic is similar to the severe acute respiratory syndrome related coronavirus (SARS-CoV) endemic and the Middle East Respiratory Syndrome Coronavirus (MERS-CoV), but this one is spreading at a fire-speed. The outbreak was known as pneumonia in the beginning; however, it became a threat later on, owing to its high contagion rate. The origin of this virus was sought to be from the seafood wholesale market, very popular in the city of Wuhan. This review has been put together to overview the disease, its etiology, clinical features and treatment methods. The focal point of this review is to highlight the current management of this disease.


2021 ◽  
Vol 4 (4) ◽  
pp. 311-323
Author(s):  
Venkataramana Kandi ◽  
Tarun Kumar Suvvari ◽  
Sabitha Vadakedath ◽  
Vikram Godishala

Because of the frequent emergence of novel microbial species and the re-emergence of genetic variants of hitherto known microbes, the global healthcare system, and human health has been thrown into jeopardy. Also, certain microbes that possess the ability to develop multi-drug resistance (MDR) have limited the treatment options in cases of serious infections, and increased hospital and treatment costs, and associated morbidity and mortality. The recent discovery of the novel Coronavirus (n-CoV), the Severe Acute Respiratory Syndrome CoV-2 (SARS-CoV-2) that is causing the CoV Disease-19 (COVID-19) has resulted in severe morbidity and mortality throughout the world affecting normal human lives. The major concern with the current pandemic is the non-availability of specific drugs and an incomplete understanding of the pathobiology of the virus. It is therefore important for pharmaceutical establishments to envisage the discovery of therapeutic interventions and potential vaccines against the novel and MDR microbes. Therefore, this review is attempted to update and explore the current perspectives in microbes, clinical research, drug discovery, and vaccine development to effectively combat the emerging novel and re-emerging genetic variants of microbes.


Author(s):  
Madhusmita Mohanty Mohapatra ◽  
Manju Rajaram ◽  
Dharm Prakash Dwivedi ◽  
Vishnukant Govindraj ◽  
Pratap Upadhya

Severe acute respiratory syndrome- coronavirus-2 (SARS-CoV-2) which emerged in Wuhan initially as pneumonia of unknown origin in December 2019, later spread to whole world and became pandemic on 11th March, 2020. Many drugs have been proposed but are backed without clinical evidence. Scientific bodies are in the row to discover a reliable vaccine and effective drugs against the novel coronavirus. Many antiviral and anti-parasitic drugs which were thought to have some effect on Coronavirus disease 2019 (COVID-19) have been tried during the crisis but none have shown concrete evidence of action. Randomized clinical trials on the repurposed drugs are now registered under clinical trial registry to look at the safety profile and efficacy of the drugs to be used against SARS-CoV-2. Many meta-analyses are being conducted worldwide to frame evidence for the fight against this novel coronavirus. We are providing below a review of various drugs that have been tried for treatment of COVID-19 as well as different clinical trials which are underway.


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