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17.10.2019 | Original Contributions | Ausgabe 2/2020

Obesity Surgery 2/2020

Lipoprotein(a) Change After Sleeve Gastrectomy Is Affected by the Presence of Metabolic Syndrome

Zeitschrift:
Obesity Surgery > Ausgabe 2/2020
Autoren:
Silvia Paredes, Marta Alves, Maria Lopes Pereira, Olinda Marques, Laura Ribeiro
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Abstract

Background

Patients with metabolic syndrome (MetS) are at high risk of developing cardiovascular disease (CVD) and lipoprotein(a) (Lp(a)) is an independent risk factor for CVD. This study aimed to determine the effect of vertical sleeve gastrectomy (VSG)–induced weight loss on Lp(a) levels in obese individuals.

Methods

Patients submitted to VSG from January 2011 to July 2015 were included. Anthropometric and metabolic parameters were recorded before and 12 months after surgery. Univariate analysis identified associations between Lp(a) and anthropometry and metabolic parameters, and the logistic regression predictors of Lp(a) decrease after VSG.

Results

MetS was present in 47% of the 330 patients involved. Patients with MetS had higher body mass index (BMI) and triglyceride levels and were more insulin-resistant. No differences were found between groups respecting Lp(a) levels prior to surgery (15.2 mg/dL vs. 15.0 mg/dL, p = 0.795). After surgery, patients without MetS had a decrease in Lp(a) levels (14.7 mg/dL vs. 12.3 mg/dL, p = 0.006), while MetS patients showed no differences (13.9 mg/dL vs. 14.6 mg/dL, p = 0.302). The regression model evidenced that older age and Δ HDL-c were predictors of Lp(a) decrease, whereas the greater the number of MetS components and lower estimated BF% loss, the lesser odds of decreasing Lp(a) after surgery.

Conclusions

Despite a global improvement of conventional CVD risk factors, only individuals without MetS showed a decrease of Lp(a) levels after VSG. Further studies should explore not only the pathophysiological mechanisms underlying the absence of decrease of Lp(a) levels in MetS patients, but also its impact on the metabolic beneficial changes usually observed after VSG.

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