Sara Iranparast; Farhad Seif; Sanaz Tayebi; Farhad Abolnezhadian; Moosa Sharifat; Alireza Fazaeli; Neda Roshanravan; Azam Samei; Sholeh Khajoei
Abstract
Follicular helper T (TFH) cells are a subset of effector CD4+ T cells that support the differentiation of antigen-specific B cells in the germinal center. TFH cells are distinct from other established CD4+ T cell subsets and possess a list of transcription factors, including BCL6, IRF4, c-Maf, Batf, ...
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Follicular helper T (TFH) cells are a subset of effector CD4+ T cells that support the differentiation of antigen-specific B cells in the germinal center. TFH cells are distinct from other established CD4+ T cell subsets and possess a list of transcription factors, including BCL6, IRF4, c-Maf, Batf, NFAT1-2, and STAT3. The mentioned factors direct several activities such as cell differentiation, migration to the follicles, cell-to-cell interaction, as well as cell programming. Given that TFH cells are essential for the germinal center formation, affinity maturation and the development of most high-affinity antibodies. TFH cells may play crucial roles in different pathologic conditions, particularly autoimmune diseases. However, the mechanisms that cause functional differences of TFH cell responses are not exactly defined. In this review first the immunological profile of TFH cells will be discussed then attempts will be made to give a broad picture on the role of this key subset of T cells in autoimmune diseases.
Mahmood Soveid; Peyman Petramfar
Abstract
High cortisol level in endogenous Cushing’s syndrome suppresses the immune system and after treatment there may be an over activity of immune reaction leading to autoimmune diseases mostly thyroid and rheumatologic disorders. This is the second reported case of multiple sclerosis developing after ...
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High cortisol level in endogenous Cushing’s syndrome suppresses the immune system and after treatment there may be an over activity of immune reaction leading to autoimmune diseases mostly thyroid and rheumatologic disorders. This is the second reported case of multiple sclerosis developing after treatment of Cushing’s syndrome. A 42-year old man is reported who presented with bone fracture and osteoporosis and diagnosed with Cushing’s disease. Six months after surgical treatment of his pituitary adenoma, he developed progressive multiple sclerosis. We conclude that after treatment of endogenous Cushing’s syndrome, the patients should be watched for development of autoimmune disorders including those affecting the central nervous system.
Mojtaba Zarei
Abstract
Clinical neurology has been traditionally considered as an academic speciality in which the specialist regurgitates his/her knowledge of neurology without being able to do much for the patient. This attitude is no longer acceptable. Surge of information and discoveries in neurosciences within the last ...
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Clinical neurology has been traditionally considered as an academic speciality in which the specialist regurgitates his/her knowledge of neurology without being able to do much for the patient. This attitude is no longer acceptable. Surge of information and discoveries in neurosciences within the last two decades translated into therapeutic interventions which is literally life saving in some occasions. Neuroimmunology, without a doubt, has been in the forefront of such discoveries. Just a few decades ago immunology of the nervous system was of little interest because brain was thought to be an immunologically “privileged” organ i.e. inaccessible to cellular and humeral immunity. Today, however, clinical neurologists deal with neurological problem with immunological basis on a daily basis. This article tries to review such diseases and their current therapeutic strategy proceeded by an introduction to CNS immunity. Multiple sclerosis, as one of the most common CNS disease with immunological basis, has been given more attention because of the growing number of affected people in Iran.
