Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus

Background Systemic lupus erythematosus (SLE) is an autoimmune disease influenced by genetic and environmental factors, with gut microbiota (GM) changes emerging as a key environmental contributor.Methods A total of 42SLE patients and 30 age – and sex-matched healthy controls were enrolled. Stool sa...

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Main Authors: Yara Safwat Roshdy, Shwikar Mahmoud Ahmed, Mona Gamaleldeen Morsi, Ahmed Shaaban, Samar Farouk Fouad Mostafa
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Alexandria Journal of Medicine
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Online Access:https://www.tandfonline.com/doi/10.1080/20905068.2025.2460908
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author Yara Safwat Roshdy
Shwikar Mahmoud Ahmed
Mona Gamaleldeen Morsi
Ahmed Shaaban
Samar Farouk Fouad Mostafa
author_facet Yara Safwat Roshdy
Shwikar Mahmoud Ahmed
Mona Gamaleldeen Morsi
Ahmed Shaaban
Samar Farouk Fouad Mostafa
author_sort Yara Safwat Roshdy
collection DOAJ
description Background Systemic lupus erythematosus (SLE) is an autoimmune disease influenced by genetic and environmental factors, with gut microbiota (GM) changes emerging as a key environmental contributor.Methods A total of 42SLE patients and 30 age – and sex-matched healthy controls were enrolled. Stool samples from all participants were analyzed using quantitative SYBR Green Real-Time PCR to detect and quantify selected bacterial taxa at phylogenetic and species levels.Results Our results highlight the signature mark of SLE gut dysbiosis, namely decreased species richness and diversity with a reduction in the Firmicutes to Bacteroidetes (F/B) ratio. Specific reductions were observed in Prevotella, Ruminococcus, Lactobacillus (including Lactobacillus reuteri), Bifidobacterium, Akkermansia muciniphila, and Faecalibacterium prausnitzii. Conversely, proinflammatory Bacteroidetes and Bacteroides were significantly increased. Notably, SLE patients receiving Mycophenolate mofetil (MMF) displayed a significantly higher F/B ratio than non-MMF users.Conclusions This study reinforces the link between gut dysbiosis and SLE, highlights conflicting evidence regarding the role of Lactobacillus in SLE, and highlights a possible new mechanism through which MMF impacts SLE. We recommend future research focus on species-level analysis to clarify contradictory results.
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spelling doaj-art-279676e383394367a45a6d591e4e0c8a2025-02-07T07:44:36ZengTaylor & Francis GroupAlexandria Journal of Medicine2090-50682090-50762025-12-0161111010.1080/20905068.2025.2460908Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosusYara Safwat Roshdy0Shwikar Mahmoud Ahmed1Mona Gamaleldeen Morsi2Ahmed Shaaban3Samar Farouk Fouad Mostafa4Medical Microbiology and Immunology Department, Faculty of Medicine-Alexandria University, Alexandria, EgyptMedical Microbiology and Immunology Department, Faculty of Medicine-Alexandria University, Alexandria, EgyptMedical Microbiology and Immunology Department, Faculty of Medicine-Alexandria University, Alexandria, EgyptInternal Medicine Department, Rheumatology & Immunology Division, Faculty of Medicine-Alexandria University, Alexandria, EgyptMedical Microbiology and Immunology Department, Faculty of Medicine-Alexandria University, Alexandria, EgyptBackground Systemic lupus erythematosus (SLE) is an autoimmune disease influenced by genetic and environmental factors, with gut microbiota (GM) changes emerging as a key environmental contributor.Methods A total of 42SLE patients and 30 age – and sex-matched healthy controls were enrolled. Stool samples from all participants were analyzed using quantitative SYBR Green Real-Time PCR to detect and quantify selected bacterial taxa at phylogenetic and species levels.Results Our results highlight the signature mark of SLE gut dysbiosis, namely decreased species richness and diversity with a reduction in the Firmicutes to Bacteroidetes (F/B) ratio. Specific reductions were observed in Prevotella, Ruminococcus, Lactobacillus (including Lactobacillus reuteri), Bifidobacterium, Akkermansia muciniphila, and Faecalibacterium prausnitzii. Conversely, proinflammatory Bacteroidetes and Bacteroides were significantly increased. Notably, SLE patients receiving Mycophenolate mofetil (MMF) displayed a significantly higher F/B ratio than non-MMF users.Conclusions This study reinforces the link between gut dysbiosis and SLE, highlights conflicting evidence regarding the role of Lactobacillus in SLE, and highlights a possible new mechanism through which MMF impacts SLE. We recommend future research focus on species-level analysis to clarify contradictory results.https://www.tandfonline.com/doi/10.1080/20905068.2025.2460908Systemic lupus erythematosusgut microbiotaSLEDAI-2Kreal-time PCRdysbiosis
spellingShingle Yara Safwat Roshdy
Shwikar Mahmoud Ahmed
Mona Gamaleldeen Morsi
Ahmed Shaaban
Samar Farouk Fouad Mostafa
Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
Alexandria Journal of Medicine
Systemic lupus erythematosus
gut microbiota
SLEDAI-2K
real-time PCR
dysbiosis
title Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
title_full Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
title_fullStr Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
title_full_unstemmed Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
title_short Beyond the microbiome: unraveling gut dysbiosis and its impact on systemic lupus erythematosus
title_sort beyond the microbiome unraveling gut dysbiosis and its impact on systemic lupus erythematosus
topic Systemic lupus erythematosus
gut microbiota
SLEDAI-2K
real-time PCR
dysbiosis
url https://www.tandfonline.com/doi/10.1080/20905068.2025.2460908
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