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Modulation of the Gut Microbiota and Serum Biomarkers After Laparoscopic Sleeve Gastrectomy: a 1-Year Follow-Up Study

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Abstract

Purpose

Bariatric surgery is a treatment option for those affected by severe obesity. This study investigated changes in gut microbiota and serum biomarkers after laparoscopic sleeve gastrectomy (LSG).

Materials and Methods

A total of 126 patients with morbid obesity who underwent LSG were enrolled in this study. Routine biochemical tests, hormonal (insulin and glucagon), and cytokine levels (IL-6, IL-1β, TNF-α, IL-10, and TGF–β 1) were measured, in addition, real-time PCR (quantitative PCR, qPCR) quantitated gut microbiota. All the parameters were measured pre-operatively, 3, and 12 months post-surgery (F0, F3, and F12, respectively).

Results

At F3, the level of FBS, HbA1c, HOMA-IR, triglyceride, cholesterol, LDL, BUN, creatinine, urea, SGOT, SGPT, IL-1β, IL-6, IFNγ, insulin, glucagon, the abundance of Prevotella and Bacteroides fragilis group, as well as the concentration of Firmicutes spp. showed significant decrease (P < 0.01), and HDL level, Akkermansia muciniphila and Roseburia spp. abundance, and Bacteroidetes and Bifidobacterium spp. concentration showed significant increase (P < 0.0001). The observed pattern continued or remained stable at F12 for all of these variables. IL-10 and TGF-β1 remained unchanged until F3 and showed a significant drop at F12. At F3, Clostridium cluster IV increased significantly and remained at that level afterward. Moreover, concentration of Phylum Actinobacteria showed an initial drop at F3 and a later increase at F12 (P < 0.0001).

Conclusion

LSG is associated with a significant improvement in serum biomarkers, as well as significant changes in fecal microbiota. Future systems biology analyses would shed more light on the underlying interactions of these parameters, and could help in developing novel diagnostic and therapeutic strategies for obesity management.

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Data Availability

All data generated or analyzed in this study are included in the present article.

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Acknowledgments

This article was part of the project conducted by Mohsen Tabasi to fulfill the requirement for a Ph.D. degree. We would like to express our gratitude to the Pasteur Institute of Iran and Legal Medicine Research Center for providing financial support. We also would like to express our appreciation to Dr. Nader Shahrokhi, Dr. Sara Ahmadi Badi, Mr. Milad Kheirvari, Mr. Mohammad Reza Yazdannasab, and staff in Shariati Hospital of Tehran, Iran for their technical assistance.

Funding

This project was financially supported by the Pasteur Institute of Iran (grant no. TP-9567).

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Authors and Affiliations

Authors

Contributions

MT and SE design the study and data analysis. SDS and FE data: collecting and writing paper. ARS and SB: conceptualization, investigation, formal analysis, writing-review and editing. All co-authors commented on the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Ahmadreza Soroush or Saeid Bouzari.

Ethics declarations

Ethics Approval and Consent to Participate

This study was conducted in accordance with the principles of the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All the participants were thoroughly informed about the study and procedures before signing consent forms. Participants were assured of anonymity and confidentiality. The Research Ethics Committee of the Pasteur Institute of Iran, Tehran, approved this study (IR.PII. REC.1397.029).

Informed Consent

Informed consent was obtained from all individual participants included in the study.

Consent for Publication

Not applicable.

Conflict of Interest

The authors declare that they have no conflicts of interest.

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Tabasi, M., Eybpoosh, S., Siadat, S.D. et al. Modulation of the Gut Microbiota and Serum Biomarkers After Laparoscopic Sleeve Gastrectomy: a 1-Year Follow-Up Study. OBES SURG 31, 1949–1956 (2021). https://doi.org/10.1007/s11695-020-05139-2

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  • DOI: https://doi.org/10.1007/s11695-020-05139-2

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