Elham Safarzadeh1,2, Farhad Jadidi-Niaragh3, Morteza Motallebnezhad2, Mehdi Yousefi4,5. 1. Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. 2. Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran. 3. Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. 4. Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Yousefime@tbzmed.ac.ir. 5. Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran. Yousefime@tbzmed.ac.ir.
Abstract
INTRODUCTION: Multiple sclerosis (MS) is a heterogeneous neurological disorder with multifactorial etiologies characterized by demyelination, axonal degeneration, and oligodendroglial death. It is believed that both genetics and environmental risk factors such as infection are involved in disease etiology. Accumulating evidence indicates that alteration in purinergic system signaling is involved in immunity and inflammation. Adenosine, a key purine nucleoside, has been shown to be produced during metabolic stress, including ischemia, inflammatory condition, and tissue injury. METHODS: Extracellular adenosine directly affects various physiological and pathological processes of MS by stimulating G protein-coupled adenosine receptors A1, A2A, A2B, and A3 on the surface of immune cells. It has been suggested that promotion of adenosinergic system may be an important factor in MS pathophysiology and considered as promising therapeutic target for this disease. CONCLUSION: In this review, we will discuss about the immunopathologic effects of adenosine on MS and its animal model, experimental autoimmune encephalomyelitis.
INTRODUCTION:Multiple sclerosis (MS) is a heterogeneous neurological disorder with multifactorial etiologies characterized by demyelination, axonal degeneration, and oligodendroglial death. It is believed that both genetics and environmental risk factors such as infection are involved in disease etiology. Accumulating evidence indicates that alteration in purinergic system signaling is involved in immunity and inflammation. Adenosine, a key purine nucleoside, has been shown to be produced during metabolic stress, including ischemia, inflammatory condition, and tissue injury. METHODS: Extracellular adenosine directly affects various physiological and pathological processes of MS by stimulating G protein-coupled adenosine receptors A1, A2A, A2B, and A3 on the surface of immune cells. It has been suggested that promotion of adenosinergic system may be an important factor in MS pathophysiology and considered as promising therapeutic target for this disease. CONCLUSION: In this review, we will discuss about the immunopathologic effects of adenosine on MS and its animal model, experimental autoimmune encephalomyelitis.
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