Prophylactic and Therapeutic Potential of Antisera against Acute Viral Infections

2017 ◽  
Author(s):  
Rebecca Schmidt
Keyword(s):  
Viral Infections ◽  
Therapeutic Potential

Chemokines in Respiratory Viral Infections: Focus on Their Diagnostic and Therapeutic Potential

2011 ◽  
Vol 31 (4) ◽  
pp. 341-356 ◽  
Author(s):  
Virginia Amanatidou ◽  
Apostolos Zaravinos ◽  
Stavros Apostolakis ◽  
Demetrios A. Spandidos
Keyword(s):  
Viral Infections ◽  
Therapeutic Potential ◽  
Respiratory Viral Infections

Therapeutic Potential of Umbilical Cord Stem Cells for Liver Regeneration

2020 ◽  
Vol 15 (3) ◽  
pp. 219-232
Author(s):  
Ifrah Anwar ◽  
Usman A. Ashfaq ◽  
Zeeshan Shokat
Keyword(s):  
Stem Cells ◽  
Umbilical Cord ◽  
Fas Ligand ◽  
Viral Infections ◽  
Therapeutic Potential ◽  
Cell Types ◽  
Low Risk ◽  
Blood Stem Cells ◽  
Umbilical Cord Stem Cells ◽  
High Regeneration

The liver is a vital organ for life and the only internal organ that is capable of natural regeneration. Although the liver has high regeneration capacity, excessive hepatocyte death can lead to liver failure. Various factors can lead to liver damage including drug abuse, some natural products, alcohol, hepatitis, and autoimmunity. Some models for studying liver injury are APAP-based model, Fas ligand (FasL), D-galactosamine/endotoxin (Gal/ET), Concanavalin A, and carbon tetrachloride-based models. The regeneration of the liver can be carried out using umbilical cord blood stem cells which have various advantages over other stem cell types used in liver transplantation. UCB-derived stem cells lack tumorigenicity, have karyotype stability and high immunomodulatory, low risk of graft versus host disease (GVHD), low risk of transmitting somatic mutations or viral infections, and low immunogenicity. They are readily available and their collection is safe and painless. This review focuses on recent development and modern trends in the use of umbilical cord stem cells for the regeneration of liver fibrosis.

scholarly journals Therapeutic potential of phytoconstituents of edible fruits in combating emerging viral infections

2021 ◽  
Author(s):  
Veerasamy Pushparaj Santhi ◽  
Poomaruthai Masilamani ◽  
Venkatraman Sriramavaratharajan ◽  
Ramar Murugan ◽  
Shailendra S. Gurav ◽  
...  
Keyword(s):  
Viral Infections ◽  
Therapeutic Potential

scholarly journals How ‘Protein-Docking’ Translates into the New Emerging Field of Docking Small Molecules to Nucleic Acids?

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2749
Author(s):  
Francesca Tessaro ◽  
Leonardo Scapozza
Keyword(s):  
Molecular Docking ◽  
Nucleic Acid ◽  
Nucleic Acids ◽  
Small Molecules ◽  
Viral Infections ◽  
Therapeutic Potential ◽  
Mrna Level ◽  
Protein Docking ◽  
Structural Nature ◽  
Rigid Docking

In this review, we retraced the ‘40-year evolution’ of molecular docking algorithms. Over the course of the years, their development allowed to progress from the so-called ‘rigid-docking’ searching methods to the more sophisticated ‘semi-flexible’ and ‘flexible docking’ algorithms. Together with the advancement of computing architecture and power, molecular docking’s applications also exponentially increased, from a single-ligand binding calculation to large screening and polypharmacology profiles. Recently targeting nucleic acids with small molecules has emerged as a valuable therapeutic strategy especially for cancer treatment, along with bacterial and viral infections. For example, therapeutic intervention at the mRNA level allows to overcome the problematic of undruggable proteins without modifying the genome. Despite the promising therapeutic potential of nucleic acids, molecular docking programs have been optimized mostly for proteins. Here, we have analyzed literature data on nucleic acid to benchmark some of the widely used docking programs. Finally, the comparison between proteins and nucleic acid targets docking highlighted similarity and differences, which are intrinsically related to their chemical and structural nature.

scholarly journals A narrative review of herbal preparations against RNA viruses

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Eghbal Jasemi ◽  
Saeideh Momtaz ◽  
Reza Ghaffarzadegan ◽  
Amir Hossein Abdolghaffari ◽  
Mohammad Abdollahi
Keyword(s):  
Infectious Diseases ◽  
Viral Infections ◽  
Therapeutic Potential ◽  
Synthetic Compound ◽  
Novel Approach ◽  
Plant Families ◽  
Approved Drugs ◽  
Almost All

Background: Throughout history, the plant kingdom has been a source of medicine in almost all cultures. Nowadays, ensuring the safety, quality, and effectiveness of medicinal herbs and their products has become an essential issue in industrialized and developing countries. Phytochemicals are usually involved in pharmacological actions and are used worldwide for various purposes, including the treatment of infectious diseases. Objectives: Although several therapeutics were designed to control infectious diseases, viral infections are still fatal. Currently, evidence extracted from in vivo, in vitro, and silico studies support the antiviral activity of many herbs scientifically; however, the therapeutic potential of many other herbs is still unknown. Plants and their products may potentially control the propagation of viruses in a variety of conditions. Methods: Data were extracted from PubMed, Scopus, Google Scholar, and Science Direct from 1983-2020. We gathered a list of plant extracts, phytochemicals, and herbal formulations that can inhibit RNA viral infections, mainly those are originated from the coronaviruses family. We also provided an overview of their inhibitory mechanism of actions. Results: Plant families, including Lamiaceae, Asteraceae, and Myrtaceae, contain the highest number of species with anti-coronaviruses activities, respectively. Conclusion: It can be suggested that the combination of these antiviral ingredients with each other, any synthetic compound, or already approved drugs or inhibitors can be a novel approach for antiviral therapies.  

scholarly journals SP-A and SP-D: Dual Functioning Immune Molecules With Antiviral and Immunomodulatory Properties

2021 ◽  
Vol 11 ◽  
Author(s):  
Alastair Watson ◽  
Jens Madsen ◽  
Howard William Clark
Keyword(s):  
Viral Infection ◽  
Influenza A ◽  
Viral Infections ◽  
Inflammatory Responses ◽  
Therapeutic Potential ◽  
Inflammatory Diseases ◽  
Chronic Obstructive ◽  
Cell Functions ◽  
Increased Risk ◽  
Syncytial Virus

Surfactant proteins A (SP-A) and D (SP-D) are soluble innate immune molecules which maintain lung homeostasis through their dual roles as anti-infectious and immunomodulatory agents. SP-A and SP-D bind numerous viruses including influenza A virus, respiratory syncytial virus (RSV) and human immunodeficiency virus (HIV), enhancing their clearance from mucosal points of entry and modulating the inflammatory response. They also have diverse roles in mediating innate and adaptive cell functions and in clearing apoptotic cells, allergens and other noxious particles. Here, we review how the properties of these first line defense molecules modulate inflammatory responses, as well as host-mediated immunopathology in response to viral infections. Since SP-A and SP-D are known to offer protection from viral and other infections, if their levels are decreased in some disease states as they are in severe asthma and chronic obstructive pulmonary disease (COPD), this may confer an increased risk of viral infection and exacerbations of disease. Recombinant molecules of SP-A and SP-D could be useful in both blocking respiratory viral infection while also modulating the immune system to prevent excessive inflammatory responses seen in, for example, RSV or coronavirus disease 2019 (COVID-19). Recombinant SP-A and SP-D could have therapeutic potential in neutralizing both current and future strains of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus as well as modulating the inflammation-mediated pathology associated with COVID-19. A recombinant fragment of human (rfh)SP-D has recently been shown to neutralize SARS-CoV-2. Further work investigating the potential therapeutic role of SP-A and SP-D in COVID-19 and other infectious and inflammatory diseases is indicated.

scholarly journals Role of Heat Shock Proteins (HSP70 and HSP90) in Viral Infection

2021 ◽  
Vol 22 (17) ◽  
pp. 9366
Author(s):  
Anna Lubkowska ◽  
Waldemar Pluta ◽  
Aleksandra Strońska ◽  
Alicja Lalko
Keyword(s):  
Heat Shock ◽  
Heat Shock Proteins ◽  
Viral Replication ◽  
Viral Infection ◽  
Viral Infections ◽  
Therapeutic Potential ◽  
Biological Significance ◽  
Hsp70 Family ◽  
The Stability ◽  
Shock Proteins

Heat shock proteins (HSPs) are a large group of chaperones found in most eukaryotes and bacteria. They are responsible for the correct protein folding, protection of the cell against stressors, presenting immune and inflammatory cytokines; furthermore, they are important factors in regulating cell differentiation, survival and death. Although the biological function of HSPs is to maintain cell homeostasis, some of them can be used by viruses both to fold their proteins and increase the chances of survival in unfavorable host conditions. Folding viral proteins as well as replicating many different viruses are carried out by, among others, proteins from the HSP70 and HSP90 families. In some cases, the HSP70 family proteins directly interact with viral polymerase to enhance viral replication or they can facilitate the formation of a viral replication complex and/or maintain the stability of complex proteins. It is known that HSP90 is important for the expression of viral genes at both the transcriptional and the translational levels. Both of these HSPs can form a complex with HSP90 and, consequently, facilitate the entry of the virus into the cell. Current studies have shown the biological significance of HSPs in the course of infection SARS-CoV-2. A comprehensive understanding of chaperone use during viral infection will provide new insight into viral replication mechanisms and therapeutic potential. The aim of this study is to describe the molecular basis of HSP70 and HSP90 participation in some viral infections and the potential use of these proteins in antiviral therapy.

scholarly journals Synergistic Interferon-Alpha-Based Combinations for Treatment of SARS-CoV-2 and Other Viral Infections

Viruses ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2489
Author(s):  
Aleksandr Ianevski ◽  
Rouan Yao ◽  
Eva Zusinaite ◽  
Laura Sandra Lello ◽  
Sainan Wang ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Side Effects ◽  
Severe Acute Respiratory Syndrome ◽  
Viral Infections ◽  
Therapeutic Potential ◽  
Clinical Development ◽  
Rna Transcription ◽  
Synthesis And Processing ◽  
Synergistic Combinations

Background: There is an urgent need for new antivirals with powerful therapeutic potential and tolerable side effects. Methods: Here, we tested the antiviral properties of interferons (IFNs), alone and with other drugs in vitro. Results: While IFNs alone were insufficient to completely abolish replication of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), IFNα, in combination with remdesivir, EIDD-2801, camostat, cycloheximide, or convalescent serum, proved to be more effective. Transcriptome and metabolomic analyses revealed that the IFNα–remdesivir combination suppressed SARS-CoV-2-mediated changes in Calu-3 cells and lung organoids, although it altered the homeostasis of uninfected cells and organoids. We also demonstrated that IFNα combinations with sofosbuvir, telaprevir, NITD008, ribavirin, pimodivir, or lamivudine were effective against HCV, HEV, FLuAV, or HIV at lower concentrations, compared to monotherapies. Conclusions: Altogether, our results indicated that IFNα can be combined with drugs that affect viral RNA transcription, protein synthesis, and processing to make synergistic combinations that can be attractive targets for further pre-clinical and clinical development against emerging and re-emerging viral infections.

scholarly journals Therapeutic potential of resveratrol against emerging respiratory viral infections

2020 ◽  
Vol 214 ◽  
pp. 107613 ◽  
Author(s):  
Simone Filardo ◽  
Marisa Di Pietro ◽  
Paola Mastromarino ◽  
Rosa Sessa
Keyword(s):  
Viral Infections ◽  
Therapeutic Potential ◽  
Respiratory Viral Infections

scholarly journals Prophylactic effects of probiotics on respiratory viruses including COVID-19: a review

2021 ◽  
Author(s):  
Na-Kyoung Lee ◽  
Hyun-Dong Paik
Keyword(s):  
Viral Infections ◽  
Therapeutic Potential ◽  
Herd Immunity ◽  
Direct Interaction ◽  
Effective Vaccine ◽  
Preventive Strategies ◽  
Gut Health ◽  
Immunomodulatory Effects ◽  
Antiviral Activities ◽  
Respiratory Droplets

AbstractCoronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is mainly transmitted through respiratory droplets. The symptoms include dry cough, fever, and fatigue; however, high propagation, mutation, and fatality rates have been reported for SARS-CoV-2. This review investigates the structure of SARS-CoV-2, antiviral mechanisms, preventive strategies, and remedies against it. Effective vaccines have been developed by Pfizer (95% effective), AstraZeneca (90% effective), Moderna (94.5% effective) vaccine, among others. However, herd immunity is also required. Probiotics play a major role in the gut health, and some are known to have therapeutic potential against viral infections. Their modes of antiviral activities include direct interaction with targeted viruses, production of antiviral metabolites, and immunomodulatory effects on the host. Hence, probiotics can be a useful prophylactic against COVID-19, and more studies are required on the effects of probiotics against other viral infections that may occur in future.

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