Cited by 73Bariatric Surgery and OutcomesAdipokines, Inflammation, and Metabolic DiseasesDiabetes, Cardiovascular Risks, and Lipoproteins

CRP reduction following gastric bypass surgery is most pronounced in insulin-sensitive subjects

Holdstock, C, Lind, L, Engstrom, B Eden, Ohrvall, M, Sundbom, M, Larsson, A, Karlsson, F A·2005·International Journal of Obesity

Abstract

Objective Obesity is frequently associated with insulin resistance, dyslipidemia, hypertension and an increased risk of cardiovascular disease, reflected in elevated markers of inflammation, in particular C-reactive protein (CRP). To what extent the insulin resistance or the obesity per se contributes to increased CRP levels is unclear. In morbidly obese patients, gastric bypass surgery causes marked changes in body weight and improves metabolism, thereby providing informative material for studies on the regulation of inflammatory markers.Design Prospective, surgical intervention study of inflammatory markers in morbidly obese subjects.Subjects In total, 66 obese subjects with mean age 39 y and mean body mass index (BMI) 45 kg/m2 were studied prior to and 6 and 12 months following Roux-en-Y gastric bypass (RYGBP) surgery.Measurements Serum concentrations of high sensitivity CRP, serum amyloid A (SAA) and interleukin-6 (IL-6), as well as markers of glucose and lipid metabolism.Results Prior to surgery, CRP levels were elevated compared to the reference range of healthy, normal-weight subjects. CRP correlated with insulin sensitivity, as reflected by the homeostatic model assessment (HOMA) index, but not BMI, when corrected for age and gender. Surgery reduced BMI from 45 to 31 kg/m2 and lowered CRP, SAA and IL-6 levels by 82, 57 and 50%, respectively, at 12 months. The reduction in CRP was inversely related to HOMA at baseline independently of the change in body weight (r=-0.36, P=0.005). At 12 months, 140 and 40% reductions in CRP were seen in subjects with HOMA < 4 (insulin sensitive) and HOMA>9 (insulin resistant) despite similar reductions in BMI. Reductions in SAA and IL-6 tended to parallel the changes in CRP, but were less informative.Conclusion In morbidly obese subjects, gastric bypass surgery lowers energy intake, reduces inflammatory markers and improves insulin sensitivity. Despite a marked reduction in body weight, only a small effect on CRP levels was seen in insulin-resistant patients, indicating that flexibility of circulating CRP levels is primarily dependent upon insulin sensitivity rather than energy supply.

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Crossref · 10.1038/sj.ijo.0803000

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Authors
Holdstock, C., Lind, L., Engstrom, B. E., Ohrvall, M., Sundbom, M., Larsson, A., & Karlsson, F. A.
Affiliations
Uppsala University Hospital (SE)
Corresponding author
Holdstock, C
Venue
International Journal of Obesity
Published
2005-07-12
Volume
29
Issue
10
Pages
1275-1280
ISSN
  • 0307-0565 (ISSN-L)
  • 1476-5497
OpenAlex
W2051823822
Cited by
73
References
49
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 6 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 11 · 2017: 1 · 2016: 1 · 2015: 6 · 2013: 3 · 2012: 3
FWCI
3.50
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Obesity (publishedVersion)
  • PubMed (publishedVersion)
Funders
Medical Research Council
Topics
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
Keywords
C-reactive protein, Roux-en-Y gastric bypass, morbid obesity, insulin resistance, insulin sensitivity, serum amyloid A, interleukin-6, inflammation, HOMA index, body mass index, weight loss, bariatric surgery
MeSH terms
Adult, Serum Amyloid A Protein, Blood Glucose, C-Reactive Protein, Female, Humans, Insulin Resistance, Male, Middle Aged, Obesity, Morbid, Prospective Studies, Sweden, Gastric Bypass, Biomarkers, Interleukin-6

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