Abstract

The human microbiome is a living ecosystem existing within the host organism, determined by a balance between pathogenic microorganisms, symbionts, and commensals. The disturbance of microbiome composition-dysbiosis-often resulting in the excess of commensal numbers, may push the immune system towards activation of inflammatory and autoimmune processes. Changes in the microbiome of gut, eyes, and mouth may play a significant role in the development and course of autoimmune diseases, including primary Sjogren's syndrome. This autoimmune disease is associated with changes in the protective barrier of the epithelium, which is an important part of the antimicrobial defense. The development of pSS may be influenced by a mechanism of molecular mimicry between microbial antigens and self antigens leading to the initiation of anti-Ro60 antibody response. The knowledge of the influence of the state of microbiome on pSS may translate into the prophylaxis of the progression of dryness symptoms. The aim of this review is to present various aspects related to the human microbiome and Sjogren's syndrome.

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