scholarly journals Mathematical Modeling of Autoimmune Diseases

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1457
Author(s):  
Mikhail Kolev
Keyword(s):  
Immune System ◽  
Autoimmune Diseases ◽  
Viral Infections ◽  
Nonequilibrium Statistical Mechanics ◽  
Good Health ◽  
The Body ◽  
Host Cells ◽  
Human Organism ◽  
Viral Particles ◽  
Harmful Effects

The human organism is a very complex system. To be in good health, its components must function properly. One of the most important systems of an organism is the immune system. It protects the body from the harmful effects of various external and internal agents. Sometimes, however, the immune system starts attacking its own healthy cells, tissues and organs. Then autoimmune diseases arise. They are widespread in recent decades. There is evidence that often autoimmune responses occur due to viral infections. In this paper, a new mathematical model of a general autoimmune disease is proposed. It describes the interactions between viral particles and host cells. The model is formulated by using integro-differential equations of Boltzmann type. This approach is typical for the nonequilibrium statistical mechanics. A preliminary qualitative and quantitative analysis of the model is presented.

Role of Rasayana in Prevention of COVID-19 - A Review

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 716-722
Author(s):  
Sneha Dhakite ◽  
Sadhana Misar Wajpeyi
Keyword(s):  
Immune System ◽  
Respiratory System ◽  
Viral Infections ◽  
Cost Effective ◽  
The Body ◽  
Healthy Life ◽  
Vital Functions ◽  
Healthy Life Style ◽  
And Control

The “Coronavirus disease 19 (COVID-19)” is caused by “Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)”, a newly discovered member of the Coronaviridae family of viruses which is a highly communicable. There is no effective medical treatment till date for Coronavirus disease hence prevention is the best way to keep disease away. Rasayana proved to be highly efficacious and cost effective for the Prevention and Control of viral infections when vaccines and standard therapies are lacking. Rasayana Chikitsa is one of the eight branches of Ashtanga Ayurveda which helps to maintain healthy life style. Rasayana improves immunity and performs many vital functions of human body. Vyadhikshamatva that is immune mechanism of the body is involved in Prevention of the occurrence of a new disease and it also decreases the virulence and progression of an existing disease. In COVID-19 the Respiratory system mainly get affected which is evident from its symptoms like cold, cough and breathlessness. Here the drugs help in enhancing immune system and strengthening functions of Respiratory system can be useful. For this purpose, the Rasayana like Chyavanprasha, Agastya Haritaki, Pippali Rasayana, Guduchi, Yashtimadhu, Haridra, Ashwagandha, Tulsi are used. Rasayana working on Respiratory system are best for Prevention of Coronavirus and boosting immune system. Rasayana Chikitsa can be effective in the Prevention as well as reducing symptoms of COVID-19.

scholarly journals Targeting Viral Surface Proteins through Structure-Based Design

Viruses ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1320
Author(s):  
Yogesh B Narkhede ◽  
Karen J Gonzalez ◽  
Eva-Maria Strauch
Keyword(s):  
Public Health ◽  
Viral Infections ◽  
Respiratory Viruses ◽  
Surface Proteins ◽  
Host Cells ◽  
Viral Fusion ◽  
Health It ◽  
Viral Particles ◽  
Pathogenic Viruses ◽  
Viral Surface

The emergence of novel viral infections of zoonotic origin and mutations of existing human pathogenic viruses represent a serious concern for public health. It warrants the establishment of better interventions and protective therapies to combat the virus and prevent its spread. Surface glycoproteins catalyzing the fusion of viral particles and host cells have proven to be an excellent target for antivirals as well as vaccines. This review focuses on recent advances for computational structure-based design of antivirals and vaccines targeting viral fusion machinery to control seasonal and emerging respiratory viruses.

scholarly journals Intercellular Transmission of Naked Viruses through Extracellular Vesicles: Focus on Polyomaviruses

Viruses ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 1086
Author(s):  
Francois Helle ◽  
Lynda Handala ◽  
Marine Bentz ◽  
Gilles Duverlie ◽  
Etienne Brochot
Keyword(s):  
Immune System ◽  
Extracellular Vesicles ◽  
Rna Viruses ◽  
Viral Transmission ◽  
Viral Fitness ◽  
Host Cells ◽  
Dna Viruses ◽  
Recent Advances ◽  
Viral Particles ◽  
Similar Strategy

Extracellular vesicles have recently emerged as a novel mode of viral transmission exploited by naked viruses to exit host cells through a nonlytic pathway. Extracellular vesicles can allow multiple viral particles to collectively traffic in and out of cells, thus enhancing the viral fitness and diversifying the transmission routes while evading the immune system. This has been shown for several RNA viruses that belong to the Picornaviridae, Hepeviridae, Reoviridae, and Caliciviridae families; however, recent studies also demonstrated that the BK and JC viruses, two DNA viruses that belong to the Polyomaviridae family, use a similar strategy. In this review, we provide an update on recent advances in understanding the mechanisms used by naked viruses to hijack extracellular vesicles, and we discuss the implications for the biology of polyomaviruses.

scholarly journals Mechanisms of the induction of autoimmunity

2005 ◽  
Vol 133 (Suppl. 1) ◽  
pp. 9-15 ◽  
Author(s):  
Marija Mostarica-Stojkovic
Keyword(s):  
Immune System ◽  
T Cell ◽  
Autoimmune Diseases ◽  
Molecular Mimicry ◽  
The Body ◽  
Peripheral Tolerance ◽  
High Avidity ◽  
Main Function ◽  
Clonal Deletion ◽  
Genetic Traits

The main function of the immune system is to protect the body by responding to invading microorganisms. Immunologic tolerance is the basic property of the immune system that provides for self/non-self discrimination so that the immune system can protect the host from external pathogens without reacting against itself. Central tolerance is achieved by the clonal deletion of self-reactive lymphocytes expressing receptors with high avidity for self. Autoreactive lymphocytes which escaped selection in the central lymphoid organs are present in the peripheral repertoire but but are kept under control by multiple diverse peripheral tolerance mechanisms acting either directly on the self-reactive T cell (T-cell intrinsic) or indirectly via additional cells (T-cell extrinsic). Intrinsic mec hanisms include ignorance of autoantigens, anergy, phenotype skewing or activation-induced cell death of autoreactive T lymphocytes, while extrinsic mechanisms act through immature and/ or tolerogenic dendritic cells as well as different types of regulatory cells. Autoimmune diseases are associated with humoral or cell-mediated immune reactions against one or more of the body?s own constituents. Activation and clonal expansion of autoreactive lymhocytes is a crucial step in the pathogenesis of autoimmune diseases. They result from the complex interactions between genetic traits and environmental factors, among which infections are the most likely cause. Several basic mechanisms may be operating whereby an infectious agent actually induces apparent autoimmne reactivity including molecular mimicry, bystander activation, induction of costimulation, polyclonal activation, altered processing and expression of cryptic antigens. Although many questions regarding autotolerance and etiop athogenestis of autoimmunity have yet to be resolved, it is evident that multiple overlapping pathways are operative in establishing, maintaining and breaking autotolerance, as well as during the initiation, progression, and final effector phases of autoimmunity.

scholarly journals Antiviral Activity of a Turbot (Scophthalmus maximus) NK-Lysin Peptide by Inhibition of Low-pH Virus-Induced Membrane Fusion

Marine Drugs ◽  
2019 ◽  
Vol 17 (2) ◽  
pp. 87 ◽  
Author(s):  
Alberto Falco ◽  
Regla Medina-Gali ◽  
José Poveda ◽  
Melissa Bello-Perez ◽  
Beatriz Novoa ◽  
...  
Keyword(s):  
Antiviral Activity ◽  
Viral Infections ◽  
Scophthalmus Maximus ◽  
Low Ph ◽  
Host Cells ◽  
Viral Origin ◽  
Membrane Rupture ◽  
Viral Particles ◽  
Strong Antiviral Activity ◽  
Turbot Scophthalmus Maximus

Global health is under attack by increasingly-frequent pandemics of viral origin. Antimicrobial peptides are a valuable tool to combat pathogenic microorganisms. Previous studies from our group have shown that the membrane-lytic region of turbot (Scophthalmus maximus) NK-lysine short peptide (Nkl71–100) exerts an anti-protozoal activity, probably due to membrane rupture. In addition, NK-lysine protein is highly expressed in zebrafish in response to viral infections. In this work several biophysical methods, such as vesicle aggregation, leakage and fluorescence anisotropy, are employed to investigate the interaction of Nkl71–100 with different glycerophospholipid vesicles. At acidic pH, Nkl71–100 preferably interacts with phosphatidylserine (PS), disrupts PS membranes, and allows the content leakage from vesicles. Furthermore, Nkl71–100 exerts strong antiviral activity against spring viremia of carp virus (SVCV) by inhibiting not only the binding of viral particles to host cells, but also the fusion of virus and cell membranes, which requires a low pH context. Such antiviral activity seems to be related to the important role that PS plays in these steps of the replication cycle of SVCV, a feature that is shared by other families of virus-comprising members with health and veterinary relevance. Consequently, Nkl71–100 is shown as a promising broad-spectrum antiviral candidate.

scholarly journals Вплив бровітакокциду сукупно з плодами розторопші плямистої на стан імунної системи індиків за еймеріозної інвазії

2017 ◽  
Vol 19 (73) ◽  
pp. 163-168
Author(s):  
I. Khariv ◽  
B. Gutyj ◽  
V. Hunchak ◽  
N. Slobodyuk ◽  
A. Vynyarska ◽  
...  
Keyword(s):  
Immune System ◽  
Intestinal Mucosa ◽  
Immune Cells ◽  
Viral Infections ◽  
Complete Recovery ◽  
The Body ◽  
Milk Thistle ◽  
Cell Type ◽  
Metabolic Products ◽  
Specific Phase

The immune system provides resistance of the organism against bacterial and viral infections in the body of the poultry. In the intestinal mucosa of eymeria it was secrete metabolic products, that are toxic to various systems and tissues of turkeys. Eymeria, parasitizing in the gut, inhibit specific phase of immunity presented by antibodies (humoral type), reduce the activity of sensitized cells (cell type), slow down nonspecific phase of immunity, represented by various immune cells. The rapid and complete recovery of functional state of the immune system in turkeys, affected by eymeriozic invasion it was found if brovitatoxide was given if the aggregate of the fruits of milk thistle. Fruits contain group of flavius lignans named «Sylimaryn», acting immune stimulatory for the development of secondary immuno deficiencies state of body.

Role of Common Kitchen Remedies in Prevention of Infectious Diseases with a particular perspective of Covid-19

2020 ◽  
Vol 11 (SPL1) ◽  
pp. 1378-1383
Author(s):  
Kanyaka Bagde ◽  
Bharat Rathi ◽  
Renu Rathi ◽  
Prem Badwaik ◽  
Swapnali Khabde
Keyword(s):  
Immune System ◽  
Infectious Diseases ◽  
Viral Infections ◽  
Daily Life ◽  
The Body ◽  
Self Healing ◽  
Long Time ◽  
Common Man ◽  
Natural Way

The greatness of Ayurveda medicine is that it works on your immune system and helps to build up the body to fight against viral invasions. It is the safest, economical and natural way of self-healing. It can quickly spread among masses from rich to poor all over the country. Ayurveda has been dealing with plenty of herbs for a very long time. These herbs include some rare to prevalent herbs which we can found some in the kitchen even though if that is of any commoners. The concern is that these viral infections are very prone to attack weak immunity and take the chance to affect the country to the globe. So the prevalent herbs of Ayurveda available in the kitchen will always be helpful to get through this viral invasion. These herbs are always there to make tasty food as well as to protect the body from infectious diseases by building the immunity strong. Herbs from the kitchen are not complicated to take as a medicine. Regular use of a few herbs in the straightforward form proves its importance as a medicine. In this article a review of herbs is done which we are available in our kitchen, we are using it in our daily life, and we are getting the benefit of these which a common man might not be fully aware of about. 

Immunology Behind Tumors: A Mini Review

2019 ◽  
Vol 15 (3) ◽  
pp. 174-183
Author(s):  
Pooja Hurkat ◽  
Sourabh Jain ◽  
Richa Jain ◽  
Aakanchha Jain
Keyword(s):  
Immune System ◽  
Tumor Microenvironment ◽  
T Lymphocytes ◽  
Immune Responses ◽  
Autoimmune Diseases ◽  
The Body ◽  
Immune Checkpoints ◽  
Genetic Constitution ◽  
Great Care ◽  
B And T Lymphocytes

Background:: The immune system is designed with great care to distinguish self from non-self, as exhibited by immune responses to different pathogens. Furthermore, the immune system has the capacity to distinguish between self from altered self in case of autoimmune diseases like cancer. Developing tumors bypass the immune system mechanism which restrains selfreactive responses. Immunotherapy is a coherent means since the immune system can eliminate a number of antigens derived from the genetic constitution of B and T lymphocytes. Our understanding of the immune system has developed a great deal. Conclusion:: This review is focused not only on the mechanism by which the immune system protects us but also on the ways in which it can inflict the body and how to modulate it with therapy. Thus, understanding the interaction of a tumor with the immune system provides insights into mechanisms that can be utilized to elicit anti-tumor immune responses. Here, we have recapitulated the function of the tumor microenvironment and immune checkpoints.

scholarly journals Hormonal Contraception and the Development of Autoimmunity: A Review of the Literature

2017 ◽  
Vol 84 (3) ◽  
pp. 275-295 ◽  
Author(s):  
William V. Williams
Keyword(s):  
Crohn’S Disease ◽  
Immune System ◽  
Crohn's Disease ◽  
Autoimmune Diseases ◽  
Interstitial Cystitis ◽  
White Blood Cells ◽  
The Body ◽  
Hormonal Contraceptives ◽  
Chemical Components ◽  
Increased Risk

Estrogens and progestins are known to have profound effects on the immune system and may modulate the susceptibility to autoimmune diseases. A comprehensive literature search was carried out using PubMed for any of 153 autoimmune disease terms and the terms contraception, contraceptive, or their chemical components with limits of Humans + Title or Abstract. Over 1,800 titles were returned and scanned, 352 papers retrieved and reviewed in depth and an additional 70 papers retrieved from the bibliographies. Based on this review, substantial evidence exists linking the use of combined oral contraceptives to a lower incidence of hyperthyroidism, an increase in multiple sclerosis, ulcerative colitis, Crohn's disease, Systemic Lupus Erythematosus, and interstitial cystitis. Progesterone only contraceptives are linked to progesterone dermatitis and in one large developing world concurrent cohort study are associated with increases in arthropathies and related disorders, eczema and contact dermatitis, pruritis and related conditions, alopecia, acne, and urticaria. Hormonal contraceptives modulate the immune system and may influence the susceptibility to autoimmune diseases with significant increases in risk for several autoimmune diseases. Summary Hormonal contraceptives (HCs), such as the “pill,” Norplant, and vaginal rings, are very potent hormones that have effects on the immune system, which is made up of white blood cells and lymph nodes and normally defends the body against invading bacteria, viruses and parasites. This review looked at the association of HC use to the development of autoimmune diseases, where the immune system turns against the body and causes damage to organs. There is good evidence that HC use is associated with an increased risk of several serious autoimmune diseases such as Crohn's disease (which causes inflammation of the bowels), Lupus (which causes inflammation in many organs), and interstitial cystitis (which causes inflammation in the bladder). Several other rarer autoimmune diseases are also linked to HC use. People contemplating the use of HCs should be informed of these risks.

scholarly journals Probiotics: Helpful for the prevention of COVID-19?

2020 ◽  
Vol 7 (11) ◽  
pp. 4086-4099
Author(s):  
Nishat Zafar ◽  
Muhammad Aamir Aslam ◽  
Ashiq Ali ◽  
Aisha Khatoon ◽  
Abdul Nazir ◽  
...  
Keyword(s):  
Immune System ◽  
Mass Production ◽  
Viral Infections ◽  
Rapid Development ◽  
The Body ◽  
Alternative Measures ◽  
Alternative Approaches ◽  
Entire World ◽  
And Control ◽  
Stimulation Of

Up to now, no vaccine has been developed for COVID-19 treatment. Although many scientists are working for the rapid development of a vaccine to control this pandemic, nonetheless, it will take time. If the vaccine will be developed soon, it will not be available to the entire world instantly since the mass production of the vaccine will take time. In this scenario, we will have to take alternative measures to control the COVID-19 pandemic. These alternative approaches include the stimulation of the immune system to fight against viral infections. Among the different approaches to strengthen the immune system, the use of probiotics is the best one. Probiotics can help the body to fight against COVID-19 directly and indirectly. In this review, we comprehensively discuss the use of probiotics for the prevention and control of COVID-19.

Sign in / Sign up

Export Citation Format

Share Document