The DOI matches its Crossref record; 117 of the 119 references it cites were found in a registry or an index.
Inflammatory markers and bariatric surgery: a meta-analysis
Abstract
Objective Obesity is a state of chronic low grade inflammation with increased levels of inflammatory markers such as C-reactive protein (CRP), interleukin (IL)-6 and tumor necrosis factor (TNF) α. The changes of some of the above markers after bariatric surgery are not consistent across studies. The objective of this study is to confirm the changes in blood levels of CRP, IL-6 and TNFα after bariatric surgery.Methods A Pubmed and EMBASE search was performed for studies measuring the above cytokines in blood before and after bariatric surgery. A meta-analysis was performed for the changes in CRP, TNFα and IL-6 for the maximum follow-up time in each study as well as for discrete follow-up times.Results Only observational studies could be retrieved. Bariatric surgery produces about 66 and 27 % reduction in CRP and IL-6 levels, respectively. The change in TNFα after bariatric surgery did not approach statistical significance.Conclusion Bariatric surgery decreases the low grade inflammation associated with obesity as measured by CRP and IL-6 levels. The change of TNFα after bariatric surgery should be further investigated with randomized trials.
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“compared with reductions of 65.8% reported in bar iatric surgery meta-analyses. 47”
From Comprehensive Long-Term Changes in Cardiovascular Risk Biomarkers With Tirzepatide (2026) · cites this paper as [47]
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“while bar iatric surgery typically achieves reductions of 27.4 ± 3.5%. 47”
From Comprehensive Long-Term Changes in Cardiovascular Risk Biomarkers With Tirzepatide (2026) · cites this paper as [47]
Citations
Cites
1 retracted
Visfatin: A Protein Secreted by Visceral Fat That Mimics the Effects of Insulin
Fukuhara, A., Matsuda, M., Nishizawa, M., Segawa, K., Tanaka, M., Kishimoto, K., Matsuki, Y., Murakami, M., Ichisaka, T., Murakami, H., et al. (2005) · Science · doi:10.1126/science.1097243 · Cited by 1,906
RetractedMeta-analysis of Observational Studies in Epidemiology<SUBTITLE>A Proposal for Reporting</SUBTITLE>
Stroup, D. F. (2000) · JAMA · doi:10.1001/jama.283.15.2008 · Cited by 20,623
Obesity is associated with macrophage accumulation in adipose tissue
Weisberg, S. P., McCann, D., Desai, M., Rosenbaum, M., Leibel, R. L., & Ferrante, A. W. (2003) · Journal of Clinical Investigation · doi:10.1172/jci200319246 · Cited by 10,041
Xu, H., Barnes, G. T., Yang, Q., Tan, G., Yang, D., Chou, C. J., Sole, J., Nichols, A., Ross, J. S., Tartaglia, L. A., et al. (2003) · Journal of Clinical Investigation · doi:10.1172/jci200319451 · Cited by 6,760
TLR4 links innate immunity and fatty acid-induced insulin resistance
Shi, H., Kokoeva, M. V., Inouye, K., Tzameli, I., Yin, H., & Flier, J. S. (2006) · Journal of Clinical Investigation · doi:10.1172/jci28898 · Cited by 3,690
Elevated C-reactive protein levels in overweight and obese adults
Visser, M. (1999) · JAMA · doi:10.1001/jama.282.22.2131 · Cited by 2,494
Subcutaneous Adipose Tissue Releases Interleukin-6, But Not Tumor Necrosis Factor-α,in Vivo1
Mohamed‐Ali, V., Goodrick, S., Rawesh, A., Katz, D. R., Miles, J. M., Yudkin, J. S., Klein, S., & Coppack, S. W. (1997) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.82.12.4450 · Cited by 2,032
Fried, S. K., Bunkin, D. A., & Greenberg, A. S. (1998) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.83.3.4660 · Cited by 1,756
Visceral fat adipokine secretion is associated with systemic inflammation in obese humans
Fontana, L., Eagon, J. C., Trujillo, M. E., Scherer, P. E., & Klein, S. (2007) · Diabetes · doi:10.2337/db06-1656 · Cited by 1,417
Interleukin-6 in Biology and Medicine
Akira, S., Taga, T., & Kishimoto, T. (1993) · Advances in immunology · doi:10.1016/s0065-2776(08)60532-5 · Cited by 1,402
Research works printed but not linked: 4
- Melendez Araujo M, De Matos Arruda S, Silva Oliveira M, Franca F, Barros R, Medeiros Santos R, Cubas Rolim E, Daher Milhomem P, Ferreira Neves C. Evaluation of inflamatory and metabolic state of patients with steatosis before Roux-en-Y gastric bypass procedure and after six months of operation. Obes Surg. 2011;21:1129.
- Wolf T, Rauschmayer M, Dressler M, Ring A, Britz A, Lohmann T. Changes of hormone levels in the early period after bariatric surgery. Obes Surg. 2011;21:1079.
- Fica S, Sirbu A, Copaescu C, Olaru R, Florea S. Significant improvement in metabolic status 6 months after bariatric surgery. Diabetes Technol Ther. 2011;13:223–4.
- Malheiros C, Freitas W, Saleh M, Taha M, Bertolami M. Bariatric surgery decreases the inflammatory response in the 6 months post-operatory. Obes Surg. 2009;19:1013.
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Maggioni, L. (2014) · Americanae (AECID Library)
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Ruíz-Tóvar, J., & Calpena, R. (2014) · Elsevier eBooks · doi:10.1016/b978-0-12-407869-7.00010-6
Pisi, P. C. B. (2017) · Digital Library of Theses and Dissertations (Universidade de São Paulo) · doi:10.11606/t.17.2017.tde-06062017-163504
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de Jonge, C. (2014) · Research Publications (Maastricht University) · doi:10.26481/dis.20140905cj
Metadata
- Authors
- Rao, S. R.
- Affiliations
- New York University (US)
- Corresponding author
- Rao, S. Raghavendra
- ORCID
- Rao, S. Raghavendra
- Venue
- Inflammation Research
- Published
- 2012-05-16
- Volume
- 61
- Issue
- 8
- Pages
- 789-807
- ISSN
- 1023-3830 (ISSN-L)
- 1420-908X
- OpenAlex
- W2047539013
- Cited by
- 162
- References
- 119
- Citations by year
- 2026: 9 · 2025: 9 · 2024: 5 · 2023: 14 · 2022: 13 · 2021: 13 · 2020: 13 · 2019: 12 · 2018: 9 · 2017: 8 · 2016: 9 · 2015: 21 · 2014: 17 · 2013: 8 · 2012: 2
- FWCI
- 2.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Inflammation Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
- Health Sciences › Medicine › Surgery › Body Contouring and Surgery
- Keywords
- bariatric surgery, obesity, low-grade inflammation, inflammatory markers, C-reactive protein, interleukin-6, TNF-α, cytokines, weight loss
- MeSH terms
- Animals, C-Reactive Protein, Humans, Inflammation, Obesity, Morbid, Tumor Necrosis Factor-alpha, Biomarkers, Interleukin-6, Bariatric Surgery
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