Clinical Scorecard: Relationship Between Macrophage Infiltration and Activation in Obese and Diabetic Patients and Their Diabetic Remission Following Bariatric Surgery

At a Glance

Key Highlights

• Adipose tissue acts as an active endocrine and immunometabolic organ secreting adipokines influencing inflammation and insulin sensitivity.
• Obesity induces macrophage polarization towards proinflammatory M1 phenotype in adipose tissue, contributing to insulin resistance and T2DM pathogenesis.
• Bariatric surgery can achieve diabetic remission, but predictive clinical scores have limited accuracy; macrophage distribution in visceral fat may serve as a novel predictor.

Guideline-Based Recommendations

Diagnosis

• Assess obesity status using BMI (≥30 kg/m² defines obesity).
• Diagnose type 2 diabetes mellitus based on clinical criteria.
• Consider evaluation of adipose tissue macrophage infiltration and polarization for research or prognostic purposes.

Management

• Bariatric surgery is effective for diabetic remission in patients with severe obesity and T2DM.
• Use clinical scoring systems (ABCD, IMS, DiaRem, Ad-DiaRem) cautiously as their predictive power for surgical outcomes is debated.

Monitoring & Follow-up

• Monitor metabolic parameters and diabetic status pre- and post-bariatric surgery.
• Evaluate inflammatory markers and adipokine profiles as potential indicators of metabolic improvement.

Risks

• Chronic low-grade inflammation from proinflammatory macrophages may worsen insulin resistance and diabetes.
• Surgical risks inherent to bariatric procedures should be considered.

Patient & Prescribing Data

Patients with obesity and type 2 diabetes undergoing bariatric surgery

Bariatric surgery can induce diabetic remission; however, individual outcomes may be influenced by preoperative macrophage infiltration and polarization in visceral fat.

Clinical Best Practices

• Consider comprehensive metabolic and inflammatory assessment in obese diabetic patients prior to bariatric surgery.
• Recognize the role of adipose tissue macrophage polarization in the pathogenesis of insulin resistance and T2DM.
• Use bariatric surgery as a therapeutic option for severe obesity with T2DM, while acknowledging limitations of current predictive scoring systems.

References

• Obesity and insulin resistance mechanisms
• Role of adipokines in inflammation and insulin sensitivity
• Serum amyloid A and metabolic inflammation
• Macrophage polarization in adipose tissue
• Bariatric surgery and diabetic remission
• Clinical scoring systems for diabetes remission prediction