Retinitis pigmentosa is associated with shifts in the gut microbiome

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Title: Retinitis pigmentosa is associated with shifts in the gut microbiome
Authors: Kutsyr, Oksana | Maestre-Carballa, Lucia | Lluesma Gómez, Mónica | Martinez-Garcia, Manuel | Cuenca, Nicolás | Lax, Pedro
Research Group/s: Neurobiología del Sistema Visual y Terapia de Enfermedades Neurodegenerativas (NEUROVIS) | Ecología Microbiana Molecular
Center, Department or Service: Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología | Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef"
Keywords: Retinal degeneration | rd10 | Gut microbiome | 16S rRNA gene sequencing | Electroretinography | Immunohistochemistry
Knowledge Area: Biología Celular | Microbiología | Fisiología
Issue Date: 23-Mar-2021
Publisher: Springer Nature
Citation: Scientific Reports. 2021, 11: 6692.
Abstract: The gut microbiome is known to influence the pathogenesis and progression of neurodegenerative diseases. However, there has been relatively little focus upon the implications of the gut microbiome in retinal diseases such as retinitis pigmentosa (RP). Here, we investigated changes in gut microbiome composition linked to RP, by assessing both retinal degeneration and gut microbiome in the rd10 mouse model of RP as compared to control C57BL/6J mice. In rd10 mice, retinal responsiveness to flashlight stimuli and visual acuity were deteriorated with respect to observed in age-matched control mice. This functional decline in dystrophic animals was accompanied by photoreceptor loss, morphologic anomalies in photoreceptor cells and retinal reactive gliosis. Furthermore, 16S rRNA gene amplicon sequencing data showed a microbial gut dysbiosis with differences in alpha and beta diversity at the genera, species and amplicon sequence variants (ASV) levels between dystrophic and control mice. Remarkably, four fairly common ASV in healthy gut microbiome belonging to Rikenella spp., Muribaculaceace spp., Prevotellaceae UCG-001 spp., and Bacilli spp. were absent in the gut microbiome of retinal disease mice, while Bacteroides caecimuris was significantly enriched in mice with RP. The results indicate that retinal degenerative changes in RP are linked to relevant gut microbiome changes. The findings suggest that microbiome shifting could be considered as potential biomarker and therapeutic target for retinal degenerative diseases.
Sponsor: This study was funded by the Spanish Ministry of Economy Industry and Competitiveness (MINECO-FEDER BFU2015-67139-R and RTI2018-094248-B-I00), Spanish Ministry of Science and Innovation (MICINN-FEDER PID2019-106230RB-I00), Instituto de Salud Carlos III co-financed by European Regional Development funds (RETICS-FEDER RD16/0008/0016), Asociación Retina Asturias (ASOCIACIONRETINA1-20I), FARPE-FUNDALUCE (FUNDALUCE18-01), Generalitat Valenciana (FEDER IDIFEDER/2017/064) and Alicante’s University (UAIND18-05A).
ISSN: 2045-2322
DOI: 10.1038/s41598-021-86052-1
Language: eng
Type: info:eu-repo/semantics/article
Rights: © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
Peer Review: si
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INV - NEUROVIS - Artículos de Revistas

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