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Article

Phase Angle: Could Be an Easy Tool to Detect Low-Grade Systemic Inflammation in Adults Affected by Prader–Willi Syndrome?

1
Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
2
Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
3
Cattedra Unesco “Educazione alla Salute e allo Sviluppo Sostenibile”, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
*
Author to whom correspondence should be addressed.
These Authors authors contributed equally to this work.
Nutrients 2020, 12(7), 2065; https://doi.org/10.3390/nu12072065
Received: 11 June 2020 / Revised: 1 July 2020 / Accepted: 7 July 2020 / Published: 11 July 2020
(This article belongs to the Special Issue Diet, Nutrition and Chronic Degenerative Diseases)
Prader–Willi syndrome (PWS) is the most common genetic inherited obesity syndrome. Obesity-related complications, mostly related to chronic low-grade systemic inflammation (LGI), are the commonest cause of mortality and morbidity in PWS adults. Phase angle (PhA) is an easy tool to screen a state of LGI in healthy subjects and in subjects with obesity and is obtained from bioelectrical impedance analysis (BIA). The aim of this study was to validate the PhA in PWS adults as a potential biomarker of LGI. In this single-center, cross-sectional study, fifteen PWS adults (six males, aged 19–41 years, and body mass index (BMI) 31.0–68.0 Kg/m2) and fifteen control subjects matched by gender, age, and BMI were evaluated. PhA values were significantly lower (p < 0.001), while high-sensitivity C-reactive protein (hs-CRP) levels were significantly higher (p < 0.001) in PWS adults compared with controls (p < 0.001), without a gender difference in the latter. After adjustment for gender, BMI, and waist circumference, significant correlation was found between PhA and hs-CRP levels (r = −0.69, p = 0.01). At the ROC analysis, the threshold value of PhA predicting the highest hs-CRP levels above the median value was found at PhA ≤ 4.8° (p = 0.01; AUC, 0.82; standard error, 0.12; 95% CI, 0.58 to 1.00). These results suggest that PWS adults had a significant higher degree of LGI compared with their counterparts. Moreover, our finding suggest that PhA is a valid biomarker of LGI also in PWS adults. View Full-Text
Keywords: Prader–Willi syndrome; phase angle; obesity; chronic low-grade inflammation; nutritionist Prader–Willi syndrome; phase angle; obesity; chronic low-grade inflammation; nutritionist
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MDPI and ACS Style

Barrea, L.; Pugliese, G.; de Alteriis, G.; Colao, A.; Savastano, S.; Muscogiuri, G. Phase Angle: Could Be an Easy Tool to Detect Low-Grade Systemic Inflammation in Adults Affected by Prader–Willi Syndrome? Nutrients 2020, 12, 2065. https://doi.org/10.3390/nu12072065

AMA Style

Barrea L, Pugliese G, de Alteriis G, Colao A, Savastano S, Muscogiuri G. Phase Angle: Could Be an Easy Tool to Detect Low-Grade Systemic Inflammation in Adults Affected by Prader–Willi Syndrome? Nutrients. 2020; 12(7):2065. https://doi.org/10.3390/nu12072065

Chicago/Turabian Style

Barrea, Luigi, Gabriella Pugliese, Giulia de Alteriis, Annamaria Colao, Silvia Savastano, and Giovanna Muscogiuri. 2020. "Phase Angle: Could Be an Easy Tool to Detect Low-Grade Systemic Inflammation in Adults Affected by Prader–Willi Syndrome?" Nutrients 12, no. 7: 2065. https://doi.org/10.3390/nu12072065

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