COVID-19: A Cure and Preventive Options

The world experienced the outbreaks of coronavirus infection that threaten global pandemic in 2002-2003 by Severe Acute Respiratory Syndrome (SARS) and in 2011 by Middle East Respiratory Syndrome (MERS). The genomic sequence of SARS-CoV-2 showed similar, but distinct genome composition of SARS-CoV and MERS-CoV [1,2]. On an average corona hit the 1.5% to 2020 global GDP and 0.2% to long-run global GDP. We forecast a muted longterm impact because damage to productive capacity will be small, plus economic confidence should quickly return once the virus subsides. The body’s immune system is, at the moment, the most effective weapon people have against COVID-19. The majority of patients can cure themselves of the disease simply by resting at home enabling a small army of their own cells to attack the infection. The some antiviral, anti-malarial, spiked protein based vaccine and antibody plasma therapies as a cure and phytochemical, stronger immune system and guideline given by health agencies discussed as a preventive approach discussed in this article.

The World Health Organization (WHO) also declared a global emergency on January 31 st due to increasing concerns over its fast spread, and on March 11 th the disease was recognized as a pandemic.
In general coronaviruses cause across the broad respiratory, gastrointestinal, and central nervous system diseases in humans and other animals, threatening human health and causing economic loss [5,6]. Coronaviruses are capable for adjusting with environment through the transformation and recombination without hardly lifting a finger and consequently are customized to modify have range and tissue tropism effectively [7,8]. Along these lines, wellbeing dangers from coronaviruses are steady and long haul. Understanding the virology of coronaviruses and controlling their spread have significant ramifications for worldwide wellbeing and financial stability.

Introduction
The world encounters the episode of coronavirus infection that undetermined worldwide pandemic in 2002-2003 by Severe Acute Respiratory Syndrome (SARS) and in 2011 by Middle East Respiratory Syndrome (MERS). The genomic sequence of SARS-CoV-2 indicate similar, but distinct genome composition of SARS-CoV and MERS-CoV [1,2].
The unpreceded virus has recently emerged as a human pathogen in the city of Wuhan in China's Hubei The S protein has three major sections which are the large ectodomain, a single-pass transmembrane anchor and a short intracellular tail. These play a major role in anchoring the host cells. Among these sections have two subunits which are the S1 receptor-binding subunit and S2 the membrane fusion subunit [14].
The interaction between S1 domain and its cognate receptor initiate the conformational change in the S protein that's leads to conformational change between the viral and cell layer through the S2 domin. This infection recognized the exopeptidases. The entry mechanism depends on the cellular proteases which incorpo-

Mechanism of SARS-COV-2 in Host Cell
Coronaviruses are large, wrapped, positive-stranded RNA infections. They have the biggest genome among all RNA infections, ordinarily extending from 27 to 32 kb. The genome is content inside a helical capsid shaped by the Nucleocapsid Protein (N) and assist encompassed by an envelope. Related with the viral envelope are at slightest three auxiliary proteins: The Membrane Protein (M) and the Envelope Protein (E) are included in infection get together, while the Spike Protein (S) intervenes infection section into host cells [13].  fections. Cytokine microenvironment generated by antigen presenting cells dictates the direction of T cell responses. Helper T cells orchestrate the overall adaptive response, while cytotoxic T cells are essential in killing of viral infected cells. Humeral immune response, especially production of neutralizing antibody, plays a protective role by limiting infection at later phase and prevents re-infection in the future. In SARS-CoV, both T and B cell epitopes were extensively mapped for the structural proteins, S, N, M and E protein [11]. Immune responses in COVID-19 and potential vaccines: Lessons learned from SARS and MERS epidemic.
Exactly why or how COVID-19 would do the same remains unclear. But data suggest that patients have elevated levels of cytokines and other immune molecules that are associated with these storms. It's possible that the cytokine storm is being triggered because the virus is continuing to replicate.
Here T-cells take place an important role to, build up in the body again. As they do, patients could start to improve [18][19][20] (Figure 3).

Therapeutic Strategies against COVID-19
Since SARS-CoV-2 is a newly discovered pathogen, no specific drugs have been identified or are currently rate, human aviation route trypsin-like protease (Cap), catharsis and Trans Film Protease serine 2 (TMPRSS2) that part the spike protein and build up advance entrance. The Angiotensin-Converting Chemical 2 (ACE2) working as a key receptor in the host cell. The 2 nd step is the replication that starts with the interpretation of ORF1a and 1b into the poly-proteins pp1a (4382 amino corrosive) and pp 1ab (7073 amino corrosive) and downstream ORF1by the ribosomal outline move in instrument. The systemic outline of component of passage of crown infection outlined in (Figure 2).
By the method of apoptosis infection taint the human wellbeing cell. Regularly this infection majorly affects the breath track this handle due to the cytokine release disorder could be a imperative calculate that disturbs infection movement. The next levels of IL-6 and IL-10, and lower levels of CD4+T and CD8+T are watched in COVID-19 patient's parallel with the seriousness of the disease [15][16][17].

Mechanism of Immune System of Host cell
The body's immune system is, at the moment, the most effective weapon people have against COVID-19. The majority of patients can cure themselves of the disease simply by resting at home -enabling a small army of their own cells to attack the infection. Those cells make it harder for the virus to replicate, and help to develop antibodies that prevent it from infecting new cells.
In general, the Th1 type immune response plays a dominant role in an adaptive immunity to viral in- viral replication process [33].

Blood Plasma or Antibody Treatment
Antibodies are a significant part in have resistant reactions to viral pathogens. As a result of their one of a kind development process, antibodies can advance to be exceptionally explicit to viral antigens. Doctors and specialists have been depending on such high explicitness in their mission to comprehend have viral communication and viral pathogenesis components and to discover potential solutions for viral contamination and illness. The epidemiological effect of viral maladies, joined with the rise and reappearance of some infections, and the troubles in recognizing powerful treatments, have urged a few investigations to grow new restorative procedures for viral contaminations. In this specific circumstance, the utilization of immunotherapy for the treatment of viral sicknesses is expanding. One of the procedures of immunotherapy is the utilization of antibodies, especially the Monoclonal Antibodies (mAbs) and multi-explicit antibodies, which tie legitimately to the viral antigen and achieve initiation of the safe framework.

Spike Protein-Based Vaccines Therapies
The significant role of Spike Protein (S protein) in receptor authoritative and layer combination demonstrate that immunizations dependent on the spike protein could initiate antibodies to square infection official and combination or kill infection contamination. Among every single auxiliary protein of SARS-CoV, spike protein is the primary antigenic part that is answerable for initiating host resistant reactions, killing antibodies or potentially defensive insusceptibility against infection disease. Spike protein has in this manner been chosen as a significant objective for coronavirus immunization available. An economic and efficient therapeutic strategy is to repurpose existing drugs.

Antiviral & Anti-inflammatory Drugs
Based on genomic arrangement data combined with protein structure demonstrating, mainstream researchers has had the option to quickly react with a recommended rundown of existing medications with restorative potential for COVID-19. Table 1 gives a synopsis of such medications along with potential components of activities for their exercises. Barcitinib was proposed in view of its calming impact and conceivable capacity to lessen viral entry. A fixed portion of the counter HIV mix, lopinavir-ritonavir, is presently in clinical preliminaries with Arbidol or Ribavirin [22]. Remdessivir, created by Gilead Sciences Inc., was recently tried in people with Ebola infection illness and has demonstrated guarantee in creature models for MERS and SARS. The medication is as of now being concentrated in stage III clinical preliminaries in both China and the USA. Favipiravir, a purine nucleoside prompting off base viral RNA synthesis, was initially evolved by Toyama Chemical of Japan, and has as of late been affirmed for a clinical preliminary as a medication to treat COVID-19 [22][23][24][25][26][27][28][29][30][31][32].

Anti-malarial drugs
Chloroquine's potential in treating COVID-19 is picking up footing in the clinical network. Chloroquine can raise the pH of endosomes, vesicles inside cells that are captured as purposes of section by infections. Endosomes have a somewhat acidic pH, which encourages this procedure. The chloroquine can raise endosomic pH marginally, which forestalls combination and prevents the infection from entering the phone. Chloroquine may likewise square catalysts associated with the combination between the infection and lung cells or obstruct the chemical compound fills in as a legend and -protein at the site where it was known to engage in have cell official. Their coupling connections are more steady than with that of as of late accessible medication. Thus, it was likewise observed that these atoms join to those locales of ACE2 which were engaged with serving a mode of viral entry [34][35][36][37][38][39]. Some of the myricetin, scutellarein, and phenolic mixes fill in as characteristic inhibitors against the SARS-Covid19. They show the distinctive antiviral components against SARS-CoV that incorporate repressing the viral 3CL protease and obstructing the movement of viral RNA-subordinate RNA and hostile to viral turn of events. An examination of these methodologies is given in (Table 2).

Phytochemicals or Indian Medicinal Plants Therapy
Indian customary therapeutic and phytochemicals are considered as probably the most established treatment in mankind's history and it assumes a significant job in experiencing worldwide medicinal service's needs.
A large portion of the therapeutic plant contained synthetically dynamic phytochemical gathering. Phyto-   It's the ideal opportunity for all the residents to hold hands together Create mindfulness, follow great eating regimen excise to by rehearsing self-cleanliness and social removing is just an approach to win this fight.

Conclusion
There is also no magic pill to boost our immune systems to help us fight the disease if we are infected. Due to high bioavailability, efficacy phytochemicals is a promising preventive option in this situation. Include phytochemical rich food like curcumin, Ginger below the daily intake limit could be prevent the un-effected population of world by the pandemic situation. Author concludes the therapies discussed in this article are subject to clinical trials and FDA approvals. Until the scientist not gets any clinical therapy only prevention is better approach.

Conflicts of Interest
The authors report no conflicts of interest in this work.
W. somnifera compound found in Indian medicinal plant Ashwagandha that content Withanone, That docked very well in the binding interface of AEC2-RBD complex, and found interruption of electrostatic interactions between the RBD and ACE2 would block or weaken COVID-19 entry and its subsequent infectivity [45].
The Curcumin is the integral part of Indian kitchen this compound directly involve either a direct interference of viral replication machinery or suppression of cellular signaling pathways essential for viral replication, such as PI3K/Akt, NF-Κb [21]. Inosine Monophosphate Dehydrogenase (IMPDH) enzyme due to rate-limiting activity in the de novo synthesis of guanine nucleotides is suggested as a therapeutic target for antiviral compounds. Several other compounds like Glycyrrhizin inhibits SARS-Associated Coronavirus (SARS-CoV) replication in Vero cells with a selectivity index of 67 [45].
Studies revels kaempferol has high bioavailability. In particular, The fact that these drugs not only block the 3a channel, thus counteracting virus production, but that they also interfere with other steps of the viral life cycle emphasizes the importance of multi-target phytochemical. The glycosides of kaempferol seem to be highly potent candidates for development as anti-coronaviral agents [46][47][48][49][50][51] (Table 3).

Immune Boost Therapy by Dietary Supplements
The number of cases increment step by step far and wide on the grounds that this sickness can spread from individual to individual by means of little beads from nose or mouth when an individual with COVID-19 hacks or exhales. People with covid-19 have a wide scope of manifestations like trouble of breathing, some other respiratory condition, kidney disappointment and prompts demise. Invulnerable lift diet Nutraceutical compound ( Table 4) helps to support safe framework.
The different investigations delights the enhancement of Curcumin, Vitamin D, Vitamin C and follow component retinol, β-carotene, thiamine, riboflavin, niacin, pyridoxine, folate, iron, zinc, copper, selenium, iodine, calcium, magnesium, and nutrients B12, C, D, and E to sound grown-ups in the network. Nutrient inadequacy, an expansion in CD4+ T cell rates, common executioner cell movement, mitogenic reactions, and IL-2/IL-2 receptor articulation in the gathering that got the enhancement.
The avoidance rule distributed by focal infection control and World wellbeing association help network to forestall this circumstance. The accompanying measures recommended by the wellbeing organizations.
1. Maintain the separation with individuals at rent 6ft in light of the fact that might be spread by individuals who are not demonstrating side effects.