Diabetes | VOL. 68

2309-PUB: The Effect of Linagliptin on the Microbiome of Diabetic ZDF Rats

Publication Date Jun 1, 2019


Recent data suggest that the individual microbiome influences the pathology of type 2 diabetes (T2D). Linagliptin is a dipeptidyl peptidase 4 (DPP-4) inhibitor used for the treatment of T2D, which is excreted mainly via the bile. We investigated the microbiome of diabetic ZDF vs. normal rats and the effect of linagliptin on the gut bacterial composition over time. Diabetic ZDF and normal rats (two groups each, of six biological replicates) were treated with linagliptin 7.2 mg/kg qd or vehicle, in 5 ml/kg Natrosol 0.5%; faeces were collected at days 0, 3 and 7. The sequencing of microbial 16S rRNA amplicons was performed at CeMeT GmbH in Tübingen, to produce between 50000 and 75000 raw reads per library, at a read length of 2x250 bp. Preprocessing, import QC and quantification of reads assigned to specific operational taxonomic units (OTUs) were carried out using the MEGAN 6 toolbox. Between 14 k and 37 k raw reads were assigned to different bacterial phyla. We then used the Phyloseq package coupled with DESeq2 to determine significant changes in the abundance of OTUs between diabetic ZDF and normal animals, and changes over time in animals treated with linagliptin vs. vehicle. Between 20 and 27 OTUs (quantified at family level) significantly changed in untreated diabetic vs. healthy rats, in agreement with previously published studies. However, we found only weak to moderate changes in the linagliptin treated vs. untreated ZDF rats (i.e., 3 different bacterial families with significant changes i...


Boehringer Ingelheim International GmbH ZDF Rats Diabetic ZDF Rats Operational Taxonomic Units Diabetic ZDF Abundance Of Operational Taxonomic Units Beneficial Effect Of Probiotics Changes In Abundance Gut Bacterial Composition Effect Of Linagliptin

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No potential conflict of interest was reported by the authors. The conception and design of the study, acquisition of data, analysis and interpretatio...

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