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Войти в исследования Current opinion in allergy and clinical immunology · 2019
Immunoglobulin A and microbiota in primary immunodeficiency diseases.
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Berbers Roos-Marijn, Franken Ingrid Aukje, Leavis Helen Louisa
Аннотация
PURPOSE OF REVIEW: With the emergence of the microbiota as a potential driver of host inflammation, the role of iIgA is becoming increasingly important. This review discusses the current evidence regarding the effects of clinical IgA deficiency on the microbiota, and the possible role of microbial dysbiosis in driving inflammation in PID patients.
RECENT FINDINGS: The gut microbiota has been investigated in selective IgA deficiency and common variable immunodeficiency, revealing an important role for IgA in maintaining gut microbiota homeostasis, with disparate effects of IgA on symbionts and pathobionts. Although IgA deficiency is associated with microbial translocation and systemic inflammation, this may be partially compensated by adequate IgG and IgM induction in IgA deficiency but not in common variable immunodeficiency. Therapeutic strategies aimed at correction of the microbiota mostly focus on fecal microbiota transplantation. Whether this may reduce systemic inflammation in PID is currently unknown.
SUMMARY: Clinical IgA deficiency is associated with microbial dysbiosis and systemic inflammation. The evidence for microbiota-targeted therapies in PID is scarce, but indicates that IgA-based therapies may be beneficial, and that fecal microbiota transplantation is well tolerated in patients with antibody deficiency.
RECENT FINDINGS: The gut microbiota has been investigated in selective IgA deficiency and common variable immunodeficiency, revealing an important role for IgA in maintaining gut microbiota homeostasis, with disparate effects of IgA on symbionts and pathobionts. Although IgA deficiency is associated with microbial translocation and systemic inflammation, this may be partially compensated by adequate IgG and IgM induction in IgA deficiency but not in common variable immunodeficiency. Therapeutic strategies aimed at correction of the microbiota mostly focus on fecal microbiota transplantation. Whether this may reduce systemic inflammation in PID is currently unknown.
SUMMARY: Clinical IgA deficiency is associated with microbial dysbiosis and systemic inflammation. The evidence for microbiota-targeted therapies in PID is scarce, but indicates that IgA-based therapies may be beneficial, and that fecal microbiota transplantation is well tolerated in patients with antibody deficiency.