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J Biol Regul Homeost Agents ; 29(2): 265-72, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26122213

RESUMO

The human body is colonized by a large number of microbes that are collectively referred to as the microbiota. They interact with the hosting organism and some do contribute to the physiological maintenance of the general good health thru regulation of some metabolic processes while some others are essential for the synthesis of vitamins and short-chain fatty acids. The abnormal variation, in the quality and/or quantity of individual bacterial species residing in the gastro-intestinal tract, is called “dysmicrobism”. The immune system of the host will respond to these changes at the intestinal mucosa level which could lead to Inflammatory Bowel Diseases (IBD). This inflammatory immune response could subsequently extend to other organs and systems outside the digestive tract such as the thyroid, culminating in thyroiditis. The goal of the present study is to review and analyze data reported in the literature about thyroiditis associated with inflammatory bowel diseases such as Ulcerative Colitis (UC) and Crohn’s Disease (CD). It was reported that similarities of some molecular bacterial components with molecular components of the host are considered among the factors causing IBD through an autoimmune reaction which could involve other non-immune cell types. The axis dysmicrobism-IBD-autoimmune reaction will be investigated as a possible etiopathogenic mechanism to Autoimmune Thyroiditis. If such is the case, then the employment of specific probiotic strains may represent a useful approach to moderate the immune system.


Assuntos
Trato Gastrointestinal/microbiologia , Doenças Inflamatórias Intestinais/imunologia , Doenças Inflamatórias Intestinais/microbiologia , Microbiota/fisiologia , Tireoidite Autoimune/etiologia , Animais , Translocação Bacteriana/imunologia , Fermentação , Vida Livre de Germes , Humanos , Doenças Inflamatórias Intestinais/terapia , Mucosa Intestinal/imunologia , Tecido Linfoide/imunologia , Camundongos , Microbiota/imunologia , Mimetismo Molecular/imunologia , Probióticos/efeitos adversos , Probióticos/uso terapêutico , Simbiose , Deficiência de Tiamina/etiologia , Tireoidite Autoimune/imunologia , Tireoidite Autoimune/terapia
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