Asociación entre los niveles preoperatorios de la proteína C reactiva y la persistencia de la resistencia a la insulina en pacientes sin antecedente de diabetes mellitus tipo 2 sometidos a gastrectomía en manga
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Advisors
Toro-Huamanchumo, Carlos JesusIssue Date
2025-06-23Keywords
Cirugía bariátricaProteína C reactiva
Resistencia a la insulina
Desenlaces metabólicos
Bariatric surgery
C-reactive protein
Insulin resistance
Metabolic outcomes
Metadata
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Association between Preoperative C-reactive Protein Levels and the Persistence of Insulin Resistance in Patients Without Type 2 Diabetes Mellitus Undergoing Sleeve GastrectomyAbstract
Introducción: La resistencia a la insulina (RI) se caracteriza por una respuesta disminuida a la insulina, actuando como precursora de enfermedades cardiometabólicas. La proteína C reactiva (PCR) está implicada en la perpetuación de la inflamación crónica de bajo grado debido a su asociación con la RI. La gastrectomía en manga (GM) ha demostrado ser efectiva para remitir comorbilidades; sin embargo, el rendimiento pronóstico de los niveles preoperatorios de PCR para la persistencia de la RI (PRI) sigue siendo poco explorada. Objetivo: Evaluar la relación entre niveles preoperatorios de PCR y PRI seis meses después de la GM en pacientes no diabéticos. Métodos: Estudio de cohorte retrospectivo en Lima, Perú (2007–2023), que incluyó pacientes ≥18 años con IMC ≥30 kg/m² y HOMA-IR ≥2.5, excluyendo cirugía bariátrica previa, embarazo, consumo de sustancias o infecciones recientes. La PRI se definió como HOMA-IR ≥2.5 seis meses después de la cirugía. Resultados: De 133 pacientes (62.4% mujeres; edad media 36.0±11.1 años), la mediana de PCR preoperatoria fue 5.2 mg/dL. El HOMA-IR disminuyó de 5.5 a 1.7 tras la cirugía. La PRI ocurrió en 21.1% de pacientes, asociándose con mayor peso preoperatorio (p=0.045), insulina (p=0.001) y menor HDL (p=0.017). Los niveles elevados de PCR se relacionaron con mayor IMC y HOMA-IR, pero no predijeron la PRI (AUC 0.48). Conclusiones: Los niveles elevados de PCR preoperatoria se asociaron con perfiles metabólicos adversos, pero no fueron pronósticos de la PRI después de la GM.Introduction: Insulin resistance (IR) is characterized by a diminished metabolic response to insulin, serving as a precursor to cardiometabolic diseases. C-reactive protein (CRP), an inflammation biomarker, is implicated in perpetuating low-grade inflammation through its association with IR. Sleeve gastrectomy (SG) is an effective intervention for weight reduction and comorbidity remission; however, the prognostic value of preoperative CRP levels for persistent IR (PIR) remains underexplored. Objective: Evaluate the relationship between preoperative CRP levels and the persistence of IR six months post-SG in non-diabetic patients, assessing the prognostic utility of CRP. Methods: A retrospective cohort study was conducted in Lima, Peru (2007–2023), including patients ≥18 years with BMI ≥30 kg/m² and HOMA-IR ≥2.5, excluding those with prior bariatric surgery, pregnancy, substance use, or recent infections. Persistent IR was defined as HOMA-IR ≥2.5 six months postoperatively. CRP was analyzed alongside BMI, waist circumference, blood pressure, and laboratory parameters. Results: Among 133 patients (62.4% female; mean age 36.0±11.1 years), median preoperative CRP was 5.2 mg/dL. Postoperatively, HOMA-IR decreased from 5.5 to 1.7. PIR occurred in 21.1% of patients, correlating with higher preoperative weight (p=0.045), insulin (p=0.001), HOMA-IR (p<0.001), and lower HDL (p=0.017). Higher CRP tertiles correlated with BMI and HOMA-IR but did not predict PIR (AUC 0.48). Conclusions: Elevated preoperative CRP levels were associated with adverse metabolic profiles but were not prognostic of PIR following SG, suggesting that metabolic outcomes post-SG are multifactorial, with systemic inflammation playing a limited role.
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