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Age increases MCP-1 level in association with bariatric surgery operating time and metabolic risk severity
S K Malin1,2,3, J L Kaplan3,4, L Meng3
1Department of Kinesiology University of Virginia Charlottesville USA.
Insights
Inflammation marker monocyte chemoattractant protein-1 (MCP-1) is linked to longer operating times and higher metabolic risk in older bariatric surgery patients. Addressing inflammation before surgery may improve outcomes.
Area of Science:
- Bariatric Surgery
- Inflammation and Metabolism
- Surgical Outcomes
Background:
- Older bariatric surgery patients often present with increased inflammation and metabolic risk.
- Understanding the role of inflammation in surgical outcomes is crucial for optimizing patient care.
- Monocyte chemoattractant protein-1 (MCP-1) is a key inflammatory marker implicated in metabolic diseases.
Purpose of the Study:
- To assess the association between inflammation, specifically MCP-1 levels, and operating time in younger versus older bariatric surgery patients.
- To investigate the relationship between MCP-1, metabolic risk severity, and glycaemic control in different age groups undergoing bariatric surgery.
Main Methods:
- A cohort of younger (n=55) and older (n=48) bariatric surgery patients were studied pre-operatively.
- Assessed parameters included blood pressure, glycaemic control (HbA1c), lipids, and serum MCP-1.
- Omental adipose tissue biopsies were collected for MCP-1 protein analysis; operating time served as a proxy for surgical difficulty.
Main Results:
- Older patients exhibited higher HbA1c and elevated circulating MCP-1 levels compared to younger patients.
- Operating time was significantly longer in older individuals.
- Serum MCP-1 correlated with increased metabolic risk severity, and operating time was linked to HbA1c and omental MCP-1.
Conclusions:
- MCP-1 is associated with longer operating times and greater metabolic risk in older bariatric patients, independent of glycaemic control.
- These findings suggest that pre-operative inflammation may impact surgical complexity and outcomes.
- Targeting inflammation prior to bariatric surgery could potentially enhance its effectiveness and improve patient recovery.
Objective:
Assess the role of inflammation on operating time in younger vs. older bariatric surgery patients.
Methods:
Fifty-five younger (F: 46, Age: 34.9 ± 4.0 years, body mass index [BMI]: 48.2 ± 1.0 kg m-2) and 48 older (F: 34, Age: 57.0 ± 5.1 years, BMI: 46.8 ± 1.0 kg m-2) adults were studied prior to surgery. Blood pressure, glycaemic control (fasting glucose/insulin, HbA1c), lipids (high-density lipoprotein and triglycerides) and inflammation (monocyte chemoattractant protein-1 [MCP-1]) were assessed. Metabolic risk severity z-scores were calculated from clinical outcomes. Omental adipose biopsies were collected at surgery for MCP-1 protein analysis. Operating time was used to characterize surgical difficulty.
Results:
Older vs. younger adults had higher HbA1c (P = 0.03). There was no difference in BMI, lipids, metabolic risk severity or insulin between groups, but operating time was longer in older vs. younger individuals (P = 0.04). Circulating MCP-1 was also elevated in older vs. younger adults (P = 0.04) independent of HbA1c, although this was not explained by omental fat. Nevertheless, serum MCP-1 was associated with increased metabolic risk severity (R = 0.27, P = 0.01). In addition, operating time was linked to HbA1c (R = 0.30, P = 0.01) and omental MCP-1 protein (R = 0.31, P < 0.01).
Conclusions:
MCP-1 is associated with longer operating time and increased metabolic risk severity in older bariatric patients independent of glycaemic control. Pre-operative treatment of inflammation may be required to enhance surgery effectiveness.
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