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Specific microbiome profile in Takayasu’s arteritis and giant cell arteritis
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Specific microbiome profile in Takayasu’s arteritis and giant cell arteritis
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Journal Article
Specific microbiome profile in Takayasu’s arteritis and giant cell arteritis
2021
Overview
Recent studies have provided evidence of a close link between specific microbiota and inflammatory disorders. While the vessel wall microbiota has been recently described in large vessel vasculitis (LVV) and controls, the blood microbiome in these diseases has not been previously reported (LVV). We aimed to analyse the blood microbiome profile of LVV patients (Takayasu’s arteritis [TAK], giant cell arteritis [GCA]) and healthy blood donors (HD). We studied the blood samples of 13 patients with TAK (20 samples), 9 patients with GCA (11 samples) and 15 HD patients. We assessed the blood microbiome profile by sequencing the 16S rDNA blood bacterial DNA. We used linear discriminant analysis (LDA) coupled with linear discriminant effect size measurement (LEfSe) to investigate the differences in the blood microbiome profile between TAK and GCA patients. An increase in the levels of Clostridia, Cytophagia and Deltaproteobacteria and a decrease in Bacilli at the class level were found in TAK patients compared with HD patients (LDA > 2,
p
< 0.05). Active TAK patients had significantly lower levels of Staphylococcus compared with inactive TAK patients. Samples of GCA patients had an increased abundance of Rhodococcus and an unidentified member of the Cytophagaceae family. Microbiota of TAK compared with GCA patients was found to show higher levels of Candidatus Aquiluna and Cloacibacterium (LDA > 2;
p
< 0.05). Differences highlighted in the blood microbiome were also associated with a shift of bacterial predicted metabolic functions in TAK in comparison with HD. Similar results were also found in patients with active versus inactive TAK. In conclusion, patients with TAK were found to present a specific blood microbiome profile in comparison with healthy donors and GCA subjects. Significant changes in the blood microbiome profiles of TAK patients were associated with specific metabolic functions.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 692/420
/ Aged
/ Bacilli
/ Blood
/ Computational Biology - methods
/ Female
/ Giant Cell Arteritis - drug therapy
/ Giant Cell Arteritis - etiology
/ Giant Cell Arteritis - metabolism
/ Giant Cell Arteritis - pathology
/ Humanities and Social Sciences
/ Humans
/ Male
/ rRNA 16S
/ Science
/ Takayasu Arteritis - drug therapy
/ Takayasu Arteritis - etiology
/ Takayasu Arteritis - metabolism
