Association of altered gut microbiota composition with chronic urticaria Edris Nabizadeh, MSc, Nima Hosseini Jazani, PhD, Morteza Bagheri, PhD, Shahram.

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Presentation transcript:

Association of altered gut microbiota composition with chronic urticaria Edris Nabizadeh, MSc, Nima Hosseini Jazani, PhD, Morteza Bagheri, PhD, Shahram Shahabi, MD, PhD Annals of Allergy, Asthma & Immunology Volume 119, Issue 1, Pages 48-53 (July 2017) DOI: 10.1016/j.anai.2017.05.006 Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 1 Electrophoresis of polymerase chain reaction products of the studied bacterial specific gene amplification on agarose gel 1.5%. A, Akkermansia muciniphila (329 base pairs [bp]); B, Enterobacteriaceae (69 bp); C, Clostridium leptum (cluster IV) (115 bp); D, Faecalibacterium prausnitzii (198 bp); E, universal gene (158 bp); G, GeneRuler DNA Ladder (100 bp) (Thermo Fisher Scientific, Waltham, Massachusetts). Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 2 Frequencies of the studied bacteria in the stool samples of patients with chronic urticaria (CU) and healthy controls; initial polymerase chain reaction was performed for all DNA samples extracted from the feces of patients with CU and healthy controls to investigate the presence of Akkermansia muciniphila, Enterobacteriaceae, Clostridium leptum (cluster IV), and Faecalibacterium prausnitzii. The frequencies of A muciniphila, C leptum, and F prausnitzii in the stool samples of healthy controls were significantly more than those of patients with CU (P < .001, P < .01, and P < .05, respectively), whereas the Enterobacteriaceae family were detected in the stool samples of all patients and healthy controls. Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 3 The relative amounts of Akkermansia muciniphila in the fecal microbiota of patients with chronic urticaria (CU) and healthy controls; the bacterial relative amounts were determined by quantitative polymerase chain reaction in positive stool samples by the method explained in the text. The mean relative amount of A muciniphila in the positive samples from healthy controls was significantly higher than that of patients with CU (P <.001). Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 4 The relative amounts of Clostridium leptum in the fecal microbiota of patients with chronic urticaria (CU) and healthy controls; the bacterial relative amounts were determined by quantitative polymerase chain reaction in positive stool samples by the method explained in the text. There was an increase (P = .09) in the mean of the relative amount of C leptum in the positive samples of healthy controls compared with that of patients with CU. Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 5 The relative amounts of Faecalibacterium prausnitzii in the fecal microbiota of patients with chronic urticaria (CU) and healthy controls; the bacterial relative amounts were determined by quantitative polymerase chain reaction in positive stool samples by the method explained in the text. There was an increase (P = .08) in the mean relative amount of F prausnitzii in the positive samples of health controls compared with patients with CU. Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions

Figure 6 The relative amounts of the Enterobacteriaceae family in the fecal microbiota of patients with chronic urticaria (CU) and healthy controls; the bacterial relative amounts were determined by quantitative polymerase chain reaction in positive stool samples by the method explained in the text. The mean relative amount of the Enterobacteriaceae family in the stool samples of patients with CU was more than that of healthy controls but the difference was nearly significant (P = .12). Annals of Allergy, Asthma & Immunology 2017 119, 48-53DOI: (10.1016/j.anai.2017.05.006) Copyright © 2017 American College of Allergy, Asthma & Immunology Terms and Conditions