immune system

Brain and immune system: KURU disease a toxicological process?

Published on: 3rd May, 2018

OCLC Number/Unique Identifier: 7671833271

Starting from observation of pathogenesis of KURU disease we try to investigate the immunologic role played by central nervous systems. A deeply knowledge in the transmission model of this pathology can be an imaging/diagnostic tool to Verify the progression of this prion molecule from gastro intestinal systems to the brain. (After cannibalistic behavior). The prions can be considered a sort of trace ant in KURU to monitoring this process and immune- brain relationship. Interesting information can be obtained useful to produce new pharmacological strategies in some other degenerative brain disease involving innate immune system activation.
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Protection from the Pathogenesis of Neurodegenerative Disorders, including Alzheimer’s Disease, Amyotrophic Lateral Sclerosis, Huntington’s Disease, and Parkinson’s Diseases, through the Mitigation of Reactive Oxygen Species

Published on: 4th November, 2019

OCLC Number/Unique Identifier: 8302209826

The biological changes caused by oxidative stress (OS) are known to be involved in the etiology of neurodegenerative disorders, including Alzheimer’s disease, amyotrophic lateral sclerosis, Huntington’s disease, and Parkinson’s disease. The brain is particularly vulnerable to OS due to its high lipid content and extensive consumption of oxygen. OS processes, particularly the excessive production of reactive oxygen species (ROS), play a critical role in how neurodegenerative disorders develop. This is evidenced by in vivo studies investigating various biomolecules related to OS, such as products of lipid and DNA oxidation. Accordingly, ROS can also cause oxidative-related damage in neurodegenerative disorders, including dopamine auto-oxidation, mitochondrial dysfunction, glial cell activation, α-synuclein aggregation, excessive free iron, and changes in calcium signaling. Furthermore, excessive levels of cellular oxidants reduce antioxidant defenses, which in turn propagate the cycle of OS. As such, it is increasingly important to determine the linkage between a high intake of antioxidants through dietary interventions and a lower risk of developing neurodegenerative diseases. Indeed, in addition to modulating the immune system, optimal nutritional status is capable of changing various processes of neuroinflammation known to be involved in the pathogenesis of neurodegeneration. Accordingly, a better understanding of the role ROS plays in the etiology of neurodegeneration is needed, along with the identification of dietary interventions that may lead to improved therapeutic strategies for both the treatment and prevention of neurodegenerative disorders. Therefore, this review presents a comprehensive summary of the role of ROS in the pathogenesis of neurodegenerative disorders. In addition, nutrients believed to be useful for mitigating and counteracting ROS are discussed. 
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Characterization of the immune response in neuroimmune disorders in children

Published on: 20th April, 2021

OCLC Number/Unique Identifier: 9026721284

Background: A misguided auto-reactive injury is responsible for several types of central nervous system (CNS) conditions in pediatrics. We propose that, in some of these conditions, the adaptive immune system has a common cellular immune pathogenesis, driven predominantly by T cells, despite variability on the phenotypical clinical presentation. Methods: We have characterized the CD4+/CD8+ adaptive immune response (AIR) on pediatric patients presenting with clinical symptoms compatible with Neuroimmune Disorders (NID). Flow cytometry with deep immunophenotyping of T cells was performed on peripheral blood obtained during the acute clinical phase and compared to an age-matched cohort group (Co). Results: We found that pediatric patients with confirmed NID, exhibit a pattern of dysregulation of CD4+ lineages associated with autoimmune processes. Discussion: The autoimmune associated CD4+ dysregulation was associated with patients with NID, as compared to healthy controls and patients with non-autoimmune diagnoses. If we can improve our capacity for early accurate diagnosis and meaningful disease monitoring of pathogenic T cell subsets, we can both expedite disease detection and may serve as a guide to the administration of effective immunotherapeutic agents.
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An update in the utilization of N-acetyl cysteine & vitamin c for tackling the oxidative stress in acute kidney injury secondary to robust sepsis - A systematic review

Published on: 1st February, 2022

OCLC Number/Unique Identifier: 9414669659

The commonest etiology of acute kidney injury (AKI) is Sepsis that results in an escalation of morbidity and mortality in the hospital intensive care units. Existentially, the therapy of septic AKI rather than being definitive or curative is just supportive, without tackling the pathophysiology. Usually, Sepsis gets correlated with systemic inflammation, along with the escalated generation of Reactive oxygen species (ROS), in particular superoxide. Simultaneously liberation of nitric oxide (NO) subsequently reacts with the superoxide, thus, resulting in the generation of reactive nitrogen species (RNS), that is mostly peroxynitrite. This sepsis stimulated generation of ROS in addition to RNS might cause a reduction in the bioavailability of NO that modulates microcirculation aberrations, localized tissue hypoxia as well as mitochondrial impairment, thus starting a vicious cycle of cellular damage which results in AKI. Here we conducted a systematic review utilizing search engine PubMed, Google scholar; Web of science; Embase; Cochrane review library utilizing the MeSH terms like septic AKI; ROS; inducible nitric oxide synthase (iNOS); nicotinamide adenine nucleotide phosphate(NADPH)oxidase complex; Oxidative stress; Renal medullary hypoxia; Hypoxia inducible factor1; hypoxia responsive enhancer A; mitochondrial impairment; Intrarenal oxygenation; urinary oxygenation; erythropoietin gene; RRT; NAC; Vitamin C from 1950 to 2021 till date. We found a total of 6500 articles out of which we selected 110 articles for this review. No meta-analysis was done. Thus here we detail the different sources of ROS, at the tie of sepsis, besides their pathophysiological crosstalk with the immune system, microcirculation as well as mitochondria that can result in the generation of AKI. Furthermore, we detail the therapeutic utility of N-acetylcysteine (NAC), besides the reasons for its success in ovine as well as porcine models of AKI. Moreover, we discuss preclinical along with clinical for evaluation of Vitamin C’s antioxidant effects as well as pleiotropic effects as a stress hormone that might aid in abrogation of septic AKI.
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COVID-19 pandemic to endemic

Published on: 7th November, 2022

The COVID-19 pandemic appeared in late 2019 and became a major health concern with rapid transmission and very high mortality rates across the globe. Although precautionary, preventive, protective and therapeutic measures have been adopted against COVID-19, still the disease has drastically affected people. In order to overcome the challenges of the pandemic, the understanding of the route of transmission, its fusion with receptors and invasion into the human body and hacking the immune system, the viral genome was sequenced. The viral genome keeps on mutating and altering its original form into its subtypes. Moreover, age and comorbid conditions had their impact on developing the disease differing from individual to individual due to interaction varying between the host genome and virus. Considering the pathogenesis of the virus, neutralizing antibodies reduced the viral impact and severity. This review is focused on highlighting the COVID-19 genome, host genetic factors, the pathogenesis of the disease and available therapeutic measures to overcome the pandemic.
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Interdictory contribution of Vitamin D to prevent corona virus infections

Published on: 16th November, 2022

The impact of vitamin D on the musculoskeletal system is well known. The diverse role of vitamin D is well supported by the functionality of vitamin D receptors and vitamin D activating enzymes (hydroxylase) present in tissues and cells. Hypovitaminosis D causes rickets, osteomalacia, hyperparathyroidism, and an increased risk of bone fracture. Vitamin D has immune-stimulatory effects on both the innate and adaptive immune systems. Vitamin D induces antimicrobial peptide cathelicidin and defensin that can inhibit viral replication of pro-inflammatory cytokines that regulate inflammatory encasement. Moreover, several studies on vitamin D have shown its interdictory role in the immune and respiratory systems. This global crisis, the COVID-19 pandemic condition has increased the risk of acute respiratory tract infection by immune dysregulation along with cytokine storm, which further progress into acute respiratory distress syndrome. Vitamin D has immunomodulatory and anti-inflammatory properties which are effective against respiratory viral infections. Vitamin D supplementation has shown a compatible effect on viral infection. This review article discusses the role of vitamin D in reducing the risk of respiratory infections including the severity of COVID-19 infections. This review focuses on the therapeutic role of vitamin D to improve clinical outcome during COVID-19 infection and suggest its possible role in the prevention and treatment of respiratory infections.
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Nutrition as the cornerstone of immunity

Published on: 3rd March, 2023

Nutrition plays an essential role in the maintenance of a healthy immune system. The body requires a variety of essential nutrients to support the development and function of the immune system. A balanced diet that includes a variety of vegetables, whole grains, fruit, and lean proteins can provide the necessary nutrients for optimal immune health. Additionally, research has shown that certain dietary components may have specific immunomodulatory effects. This review will discuss the evidence linking nutrition to immunity and highlight recent findings on the potential benefits of certain dietary components for immune health. 
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Hypochlorous acid has emerged as a potential alternative to conventional antibiotics due to its broad-spectrum antimicrobial activity

Published on: 30th March, 2023

Hypochlorous acid (HOCl) is a potent antimicrobial agent that has recently gained attention as a potential alternative to conventional antibiotics. HOCl is produced by the human immune system in response to infection and is known for its broad-spectrum antimicrobial activity. It is effective against a wide range of microorganisms, including bacteria, viruses, and fungi, and has been shown to be more effective than many conventional antibiotics. One of the key advantages of HOCl is its ability to kill bacteria without promoting the development of antibiotic resistance. Unlike conventional antibiotics, which target specific bacterial structures or processes, HOCl acts by disrupting multiple cellular components, making it much more difficult for bacteria to develop resistance. Another advantage of HOCl is its safety profile. Unlike many conventional antibiotics, HOCl is not toxic to human cells and does not cause side effects such as gastrointestinal upset or allergic reactions. Overall, HOCl shows great promise as a potential alternative to conventional antibiotics, particularly in the face of rising antibiotic resistance. With further research, it may become an important tool in the fight against infectious diseases. Herein, we discuss the mechanisms of HOCl antimicrobial action, its potential clinical applications, and future directions for research. This review aims to provide an overview of the use of hypochlorous acid (HOCl) as an antibiotic agent.
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Interconnection and Communication between Bone Marrow - The Central Immune System - And the Central Nervous System

Published on: 25th September, 2023

Bone marrow and the central nervous system are both protected by bone. The two systems are interconnected not only structurally but also functionally. In both systems specialized cells communicate through synapses. There exists a tridirectional communication within the neuroimmune network, including the hormonal system, the immune system, and the nervous system. Bone marrow is a priming site for T cell responses to blood-borne antigens including those from the central nervous system. In cases of auto (self) antigens, the responses lead to immune tolerance while in cases of neo (non-self) antigens, the responses lead to neoantigen-specific T cell activation, immune control, and finally to the generation of neoantigen-specific immunological memory. Bone marrow has an important function in the storage and maintenance of immunological memory. It is a multifunctional and very active cell-generating organ, constantly providing hematopoiesis and osteogenesis in finely-tuned homeostasis. Clinical perspectives include mesenchymal stem cell transplantation for tissue repair within the central nervous system.
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Contemplating Catheter Induced Blood Stream Infections and Associated Risk Factors in Diverse Clinical Settings: A Comprehensive Review

Published on: 2nd November, 2023

Catheter-Related Bloodstream Infections (CRBSIs) are severe healthcare-associated complication that occurs when bacteria enter the bloodstream through a catheter. The risk of CRBSIs is influenced by various factors. Prolonged catheter placement increases the risk, as each day increases the potential for bacterial colonization and bloodstream infection. Proper aseptic technique and a sterile environment during catheter insertion are essential to minimize infection risk. Stringent infection control measures during insertion, including sterile gloves, thorough hand hygiene, and appropriate skin disinfection, are crucial. Inadequate catheter site care and suboptimal catheter management can contribute to CRBSIs. Regular cleaning, disinfection, and dressing changes are necessary to reduce the risk of infection. The type of catheter used also affects infection risk. Central Venous Catheters (CVCs) and arterial catheters, especially those inserted into the jugular or subclavian vein, carry a higher risk of CRBSIs compared to peripheral venous catheters. Individuals with compromised immune systems, such as chemotherapy patients, organ transplant recipients, and those with HIV/AIDS, are more susceptible to CRBSIs. Patients with existing infections, like pneumonia or urinary tract infections, are at a heightened risk of acquiring CRBSIs due to potential cross-contamination. Healthcare professionals who fail to practice thorough hand hygiene before and after catheter-related procedures can introduce pathogens into the bloodstream. Leaving catheters in place when no longer necessary or using them unnecessarily elevates the risk of infection. To prevent CRBSIs, strict infection control protocols, including effective hand hygiene, sterile catheter insertion techniques, routine site care, and prompt catheter removal when no longer needed, are imperative. Healthcare facilities often implement specific protocols to mitigate CRBSI risk and enhance patient safety.
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Bio Avengers: How do Endophytic Microorganisms Alter a Plant's Defense Mechanisms?

Published on: 20th February, 2024

Endophytic microbes i.e. bacteria, fungi, and actinomycetes live inside the plant tissues without causing any harmful effect on them. Recently, research has been conducted on endophytic microbes to enhance agriculture and environmental sustainability. Endophytes stabilize a close association with their host, which leads to major changes in plant physiology. Endophytic microbes and pathogens use the same strategies for entering the host cell. This condition may create competition between the endophytes and the pathogen. Therefore, host plants develop strategies to allow the entry of specific microorganisms. Additionally, endophytic microorganisms may temper their own genetic structure to survive and avoid the host defence machinery. The plant-endophyte symbionts promote direct and indirect defences to host plants. This plays an essential role in modulating plant defences against various stresses, particularly biotic stress. In this minireview, we highlight the interaction of endophytic microbes with their host.  As well as the role of endophytic microbes in the enhancement of plant defence systems.
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Evaluation of Heavy Metals in Commercial Baby Foods

Published on: 21st February, 2024

Nutritious and safe foods are essential to meet normal physiological and metabolic functions. This study evaluated heavy metals in selected food products for newborns and toddlers. These substances may result in adverse health risks and young children are extremely vulnerable due to their immature immune systems and organs. Industrialization and technological advancement have contributed to an increase in heavy metals in the soil; therefore, entering the food system in potentially harmful amounts. Safe levels have been established by monitoring agencies to reduce the presence of heavy metals. Ten national brands of baby foods were analyzed for selected heavy metals. The main ingredients ranged from vegetables, fruits, dairy, poultry, meats, and grains. The products were analyzed in triplicates using QQQ-ICP-MS instrumentation to detect the presence of arsenic, cadmium, zinc, lead, nickel, aluminum, and chromium. Based on the Agency for Toxic Substances and Disease Registry [1] guidelines for safe quantities, aluminum (4.09 µg/g and 2.50 µg/g) and zinc (33.5 µg/g 69.5 µg/g, and 30.2 µg/g) exceeded the recommended levels of 1 µg/g/day and 2 - 3 µg/g /day respectively. Mixed model analysis found significant differences in metal concentrations (F6,24 = 2.75, p = 0.03) with an average metal concentration of 0.96 µg/g. However, no significant correlations were found between the packaging materials used and the observed metal concentrations in the food samples. The study concluded that the presence of heavy metals may be due to food type and the soil on which it is grown and not the packaging materials, establishing food system contamination by heavy metals.
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Sexual Dimorphism in Autoimmune Disorders

Published on: 25th April, 2024

Sexual dimorphism exists in Homo sapiens in many systems. Lately, it was found that it also exists in autoimmune disorders. Generally, it was known that the two genders in humans have different endocrine systems, and therefore hormone hormone-regulated systems show sexual dimorphism. However, in the case of autoimmune disorders, it is not due to directly on hormonal milieu but depends on X-chromosome inactivation in males. Whereas every cell in a woman’s body produces Xist; this ribonucleoprotein contains about 81 proteins. This chromosomal inactivation in males and formation of Xist ribonucloprotein in females is responsible for sexual dimorphism in autoimmune disorders in humans.
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Accessory Splenic Mass Masquerading as Hepatocellular Carcinoma: A Diagnostic Dilemma

Published on: 10th July, 2024

The spleen plays a pivotal role in our immune system by facilitating the proliferation and differentiation of lymphocytes and monocytes. Typically located in the left upper quadrant retroperitoneally, splenic tissue found outside of its usual position is termed ectopic spleen. When the tissue maintains its histological architecture and encapsulation and receives blood supply from splanchnic vessels, it is called an accessory spleen. Although it commonly presents near the splenic hilum or pancreatic tail, rare instances have been reported in the gastric, liver, gastrosplenic/lienorenal ligaments, as well as thoracic and gonadal regions. However, the case of an accessory spleen, mimicking a hepatic lesion in the right diaphragm represents a novel observation.
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Comparing Immunity Elicited by Feedback and Titered Viral Inoculation against PEDV in Swine

Published on: 13th November, 2024

Porcine Epidemic Diarrhea Virus (PEDV) can infect pigs of any age, but the disease severity varies significantly, particularly affecting neonatal piglets due to their immature immune system. Various vaccination strategies have been questioned for their efficacy, especially since outbreaks have occurred even on vaccinated farms. Recent suggestions indicate that exposure to the virus may enhance the effectiveness of inactivated vaccines, highlighting the potential benefits of using attenuated viruses to generate immunity in sows without prior exposure. This study aimed to evaluate the humoral and cytokine responses in pregnant sows and their piglets after inoculation of affected piglet intestinal contents and a virus isolated. We measured immune parameters such as IL-12, IL-22, IgG, and IgA, as well as neutralizing antibodies in serum, colostrum, and milk. Notably, higher titers of neutralizing antibodies were found in sows immunized with the viral inoculum, while IL-12 and IL-22 levels showed no significant differences. Additionally, we assessed productive parameters like total piglets born, weaning mortality, average birth weight, and stillborn rates. The results indicated that sows treated with affected piglet intestinal contents had higher mortality (48.31%) and stillborn rates (20.96%) compared to those receiving the isolated virus (30.02% and 10.44%, respectively). These findings suggest that using an isolated virus can offer a safe, long-lasting, and specific immune response, underscoring the importance of thorough analysis of both systemic and mucosal immune responses against PEDV.
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Two Endocrine Disorders, One Postpartum Period: “The Coexistence of Thyroiditis and Hypophysitis,” A Case Report

Published on: 24th December, 2024

The postpartum period is a phase during which various endocrine disorders may arise due to changes in the immune system. Postpartum thyroiditis and postpartum hypophysitis (lymphocytic hypophysitis) are two autoimmune diseases that typically occur independently but are rarely found together in the same patient.Postpartum thyroiditis usually starts with thyrotoxicosis and progresses to hypothyroidism, while postpartum hypophysitis can lead to adrenal insufficiency and dysfunction of other pituitary hormones.This case report discusses a female patient who presented with severe headaches, fatigue, and hypotension five months after childbirth. The patient was diagnosed with both postpartum thyroiditis and postpartum hypophysitis simultaneously, and dysfunction of both the thyroid and pituitary was detected. Hormone replacement therapies were administered, and the patient’s symptoms were brought under control.This case emphasizes the importance of carefully evaluating both thyroid and pituitary function during the postpartum period. Early diagnosis and appropriate treatment are crucial for preventing potential complications and improving long-term health outcomes.
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Post-transplant Malignancy: An Overview and Review of Literatures

Published on: 7th January, 2025

Post-transplant malignancy is one of the contentious and feared consequences of Solid Organ Transplantation (SOT), which might detrimentally alter the outcome of transplantation. Risk factors are manifold, principally related to a suppressed immune system with intercurrent immunosuppressant medications commonly used in the context of SOT. Opportunistic viral infections encountered in SOT are crucial promoters of mitogenic proliferation in several common tumors. Lastly, immune suppressant therapy might trigger mitogenic changes directly.In this paper, we are discussing post-SOT malignancies, elaborating on the different phases of its pathogenesis, and elucidating on the different aspects that linger in its risk factors, preventive strategies, and management.
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Ischemic Stroke and Myocarditis Revealing Behçet’s Disease in a Young Adult: Diagnostic Challenges and Therapeutic Perspectives

Published on: 28th January, 2025

Introduction: Behçet’s disease is a rare, systemic, inflammatory condition that primarily affects young adults. It is characterized by a variety of clinical manifestations. However, neurological and cardiac presentations remain uncommon and often delayed in diagnosis. This disease can lead to severe complications, such as ischemic strokes and myocarditis, highlighting the systemic and complex nature of the condition.Case presentation: A 27-year-old patient was hospitalized after experiencing an ischemic stroke and myocarditis, which revealed Behçet’s disease. He had a history of oral and cutaneous ulcers, without a prior diagnosis of Behçet. Upon admission, brain imaging confirmed an ischemic stroke, and echocardiography and cardiac MRI showed acute myocarditis. Biological tests confirmed elevated systemic inflammation, which guided the treatment plan. The initial treatment included corticosteroids, immunosuppressors (azathioprine), and cardioprotective therapy. The patient showed significant clinical improvements, although mild deficits persist.Discussion: Myocarditis in Behçet’s disease is a rare but severe manifestation resulting from inflammation of the heart walls, often associated with other systemic vascular involvement. Although less common than oral or cutaneous ulcers, myocarditis can lead to acute heart dysfunction and even heart failure if not treated promptly. It is generally caused by an excessive inflammatory response, often associated with immune system activation, which affects the coronary circulation and damages the cardiac muscle. Treatment for myocarditis in this context relies on high-dose corticosteroids to control inflammation, followed by long-term immunosuppressive medications like azathioprine. While the initial treatment often leads to a rapid improvement in cardiac function, the risk of long-term complications, such as dilated cardiomyopathy or heart failure, remains high. Close follow-up is therefore essential to prevent these complications and optimize the long-term cardiac prognosis of patients with this rare disease.Conclusion: The progression of myocarditis in Behçet’s disease can be favorable if diagnosed and treated early, with significant improvement in cardiac function achieved through the use of corticosteroids and immunosuppressive therapy. However, the long-term prognosis remains uncertain due to the risk of chronic cardiac complications, such as dilated cardiomyopathy or heart failure.
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