scholarly journals Mitochondria, Oxidative Stress, cAMP Signalling and Apoptosis: A Crossroads in Lymphocytes of Multiple Sclerosis, a Possible Role of Nutraceutics

Antioxidants ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 21
Author(s):  
Anna Signorile ◽  
Anna Ferretta ◽  
Maddalena Ruggieri ◽  
Damiano Paolicelli ◽  
Paolo Lattanzio ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Multiple Sclerosis ◽  
T Lymphocytes ◽  
Main Role ◽  
Apoptosis Resistance ◽  
Nutraceutical Compounds ◽  
Camp Pathway ◽  
Central Nervous Systems ◽  
Genetic And Environmental Factors

Multiple sclerosis (MS) is a complex inflammatory and neurodegenerative chronic disease that involves the immune and central nervous systems (CNS). The pathogenesis involves the loss of blood–brain barrier integrity, resulting in the invasion of lymphocytes into the CNS with consequent tissue damage. The MS etiology is probably a combination of immunological, genetic, and environmental factors. It has been proposed that T lymphocytes have a main role in the onset and propagation of MS, leading to the inflammation of white matter and myelin sheath destruction. Cyclic AMP (cAMP), mitochondrial dysfunction, and oxidative stress exert a role in the alteration of T lymphocytes homeostasis and are involved in the apoptosis resistance of immune cells with the consequent development of autoimmune diseases. The defective apoptosis of autoreactive lymphocytes in patients with MS, allows these cells to perpetuate, within the CNS, a continuous cycle of inflammation. In this review, we discuss the involvement in MS of cAMP pathway, mitochondria, reactive oxygen species (ROS), apoptosis, and their interaction in the alteration of T lymphocytes homeostasis. In addition, we discuss a series of nutraceutical compounds that could influence these aspects.

scholarly journals Main role of antibodies in demyelination and axonal damage in Multiple Sclerosis

2021 ◽  
Author(s):  
Úrsula Muñoz ◽  
Cristina Sebal ◽  
Esther Escudero ◽  
Margaret Esiri ◽  
John Tzartos ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Multiple Sclerosis ◽  
B Cells ◽  
Plasma Cells ◽  
Neurological Diseases ◽  
Axonal Damage ◽  
Main Role ◽  
Normal Appearing White Matter ◽  
Lateral Sclerosis

Abstract Background Antibodies and oxidative stress are hallmarks of multiple sclerosis (MS) lesions. We aimed to clarify the relation between them, their role in MS patients, and to investigate their specificity, comparing MS with classical neurodegenerative diseases (ND). Methods Brain samples from 14 MS cases, 6 with ND and 9 without neurological diseases (controls). Immunohistochemistry assays were used to detect oxidized lipids (EO6), IgG and IgM, oligodendrocytes (Olig2), axons (NF, neurofilament) and cellular (TUNEL) and axonal damage (APP, amyloid precursor protein). Results We did not observe EO6 in controls. All samples from MS patients showed EO6 in oligodendrocytes and axons within lesions. We did not detect co-localization between EO6 and antibodies. Neither did we between EO6 and TUNEL or APP. 94.4% of TUNEL positive cells in normal appearing white matter were also stained for IgG and 75.5% for IgM. IgM, but not IgG co-localized with APP. EO6 was associated with axonal damage in amyotrophic lateral sclerosis (ALS). We did not observe association between antibodies and cellular or axonal damage in ND patients. MS patients showed a higher number of B cells and plasma cells in the lesions and meninges than controls. The number of B cells and plasma cells was associated with the presence of antibodies and with the activity of the lesions. Conclusions We observed a main role of B-lymphocytes in the development of MS lesions. Antibodies contribute to the oligodendrocyte and axonal damage in MS. Oxidative stress was associated with axonal damage in ALS.

scholarly journals Main Role of Antibodies in Demyelination and Axonal Damage in Multiple Sclerosis

2021 ◽  
Author(s):  
Ursula Muñoz ◽  
Cristina Sebal ◽  
Esther Escudero ◽  
Margaret Esiri ◽  
John Tzartos ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Axonal Damage ◽  
Main Role

scholarly journals Curcumin and Endometriosis

2020 ◽  
Vol 21 (7) ◽  
pp. 2440 ◽  
Author(s):  
Alexandre Vallée ◽  
Yves Lecarpentier
Keyword(s):  
Oxidative Stress ◽  
Inflammatory Responses ◽  
Uterine Cavity ◽  
Main Role ◽  
Oxygen Species ◽  
Inflammatory Agent ◽  
Gynecological Disorders ◽  
Anti Oxidant ◽  
Anti Inflammatory

Endometriosis is one of the main common gynecological disorders, which is characterized by the presence of glands and stroma outside the uterine cavity. Some findings have highlighted the main role of inflammation in endometriosis by acting on proliferation, apoptosis and angiogenesis. Oxidative stress, an imbalance between reactive oxygen species and antioxidants, could have a key role in the initiation and progression of endometriosis by resulting in inflammatory responses in the peritoneal cavity. Nevertheless, the mechanisms underlying this disease are still unclear and therapies are not currently efficient. Curcumin is a major anti-inflammatory agent. Several findings have highlighted the anti-oxidant, anti-inflammatory and anti-angiogenic properties of curcumin. The purpose of this review is to summarize the potential action of curcumin in endometriosis by acting on inflammation, oxidative stress, invasion and adhesion, apoptosis and angiogenesis.

scholarly journals On the role of sensitised T-lymphocytes in the pathogenesis of multiple sclerosis

1980 ◽  
Vol 43 (4) ◽  
pp. 305-309 ◽  
Author(s):  
A. Turner ◽  
M L Cuzner ◽  
A N Davison ◽  
P. Rudge
Keyword(s):  
Multiple Sclerosis ◽  
T Lymphocytes

scholarly journals The potential role of epigenetic modifications in the heritability of multiple sclerosis

2014 ◽  
Vol 20 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Yuan Zhou ◽  
Steve Simpson ◽  
Adele F Holloway ◽  
Jac Charlesworth ◽  
Ingrid van der Mei ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Potential Role ◽  
Transcriptional Gene Silencing ◽  
Epigenetic Changes ◽  
Missing Heritability ◽  
Significant Component ◽  
Post Transcriptional Gene Silencing ◽  
Genetic And Environmental Factors ◽  
Ms Pathogenesis

It is now well established that both genetic and environmental factors contribute to and interact in the development of multiple sclerosis (MS). However, the currently described causal genetic variants do not explain the majority of the heritability of MS, resulting in ‘missing heritability’. Epigenetic mechanisms, which principally include DNA methylation, histone modifications and microRNA-mediated post-transcriptional gene silencing, may contribute a significant component of this missing heritability. As the development of MS is a dynamic process potentially starting with inflammation, then demyelination, remyelination and neurodegeneration, we have reviewed the dynamic epigenetic changes in these aspects of MS pathogenesis and describe how environmental risk factors may interact with epigenetic changes to manifest in disease.

scholarly journals Non-coding RNAs in the Pathogenesis of Multiple Sclerosis

2021 ◽  
Vol 12 ◽  
Author(s):  
Aadil Yousuf ◽  
Abrar Qurashi
Keyword(s):  
Multiple Sclerosis ◽  
Axonal Loss ◽  
Biological Processes ◽  
Protein Coding ◽  
The Past ◽  
The Central Nervous System ◽  
Non Coding Rnas ◽  
Genetic And Environmental Factors ◽  
Ms Pathogenesis

Multiple sclerosis (MS) is an early onset chronic neurological condition in adults characterized by inflammation, demyelination, gliosis, and axonal loss in the central nervous system. The pathological cause of MS is complex and includes both genetic and environmental factors. Non-protein-coding RNAs (ncRNAs), specifically miRNAs and lncRNAs, are important regulators of various biological processes. Over the past decade, many studies have investigated both miRNAs and lncRNAs in patients with MS. Since then, insightful knowledge has been gained in this field. Here, we review the role of miRNAs and lncRNAs in MS pathogenesis and discuss their implications for diagnosis and treatment.

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