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June 9, 2021Scientific ReportsOpen Access

Metabolic shift precedes the resolution of inflammation in a cohort of patients undergoing bariatric and metabolic surgery

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Key result

Bariatric and metabolic surgery significantly reduced the HOMA-IR index from 3.4 to 1.3 at 3 months, preceding the significant resolution of systemic inflammatory markers at 6 months.

Why the study?

The sequence and timing of metabolic improvement versus inflammation resolution after bariatric and metabolic surgery, particularly regarding Th17 and Th1 cell responses, has been rarely explored.

Population

Subjects with obesity undergoing bariatric and metabolic surgery

Comparison

Pre-surgery vs post-surgery follow-ups

Design

Prospective cohort study

Follow-up

6 months

Authors

JVJosé R. Villarreal-CalderónRCRicardo Xavier Cuellar-TámezECElena C. Castillo

Discussion

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Overview

Metabolic gains precede inflammatory resolution post-bariatric surgery; leaves open sequencing of Th1/Th17 responses for prospective trials.

Study Design

Type

Cohort (n=32)

Multicenter

No

Structured PICO

P
Population
32 adults with severe obesity undergoing bariatric and metabolic surgery, followed for 6 months to evaluate the temporal relationship between metabolic and inflammatory changes.
I
Intervention
Bariatric and metabolic surgery (Roux-en-Y gastric bypass [62.5%] or sleeve gastrectomy [37.5%])
O
Outcome
Changes in anthropometric, metabolic, and inflammatory markers at 3 and 6 months post-surgerysurrogate

Main Result

Absolute Event Rate: 1.3% vs 3.4%

p-value: p=<0.001

In patients undergoing bariatric surgery, metabolic improvements precede the resolution of systemic inflammation, suggesting metabolic normalization may be required for inflammatory resolution.

Limitations

  • Small sample size
  • Did not directly evaluate the number of immune cells such as macrophages or T cells
  • Lack of a non-surgical control group

Cite This Study

Villarreal-Calderón et al. (2021) conducted a cohort in Obesity (n=32). Bariatric and metabolic surgery vs. Preoperative baseline was evaluated on HOMA-IR at 3 months (p=<0.001). Bariatric and metabolic surgery significantly reduced the HOMA-IR index from 3.4 to 1.3 at 3 months, preceding the significant resolution of systemic inflammatory markers at 6 months.

synapsesocial.com/papers/6a9e91fb33946b5f8d2cc188https://doi.org/10.1038/s41598-021-91393-y
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Interplay between the Adaptive Immune System and Insulin Resistance in Weight Loss Induced by Bariatric Surgery2019 · 61 citations
  2. 2Effect of Roux-en-Y Gastric Bypass on the NLRP3 Inflammasome in Adipose Tissue from Obese Rats2015 · 32 citations
  3. 3Short-term Effects of Laparoscopic Adjustable Gastric Banding Versus Roux-en-Y Gastric Bypass2016 · 44 citations
  4. 4Reduction of Macrophage Infiltration and Chemoattractant Gene Expression Changes in White Adipose Tissue of Morbidly Obese Subjects After Surgery-Induced Weight Loss2005 · 1,156 citations
  5. 5Markers of Inflammation and Cardiovascular Disease2003 · 6,426 citations