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Article

Copper and Copper/Zinc Ratio in a Series of Cystic Fibrosis Patients

1
Faculty of Medicine, Valladolid University, Avenida Ramón y Cajal, 7, 47005 Valladolid, Spain
2
Department of Analytical Chemistry, Science Faculty, Campus Miguel Delibes, University of Valladolid, Calle Paseo de Belén, 7, 47011 Valladolid, Spain
3
Department of Pediatrics of the Faculty of Medicine, Valladolid University, Section of Gastroenterology and Pediatric Nutrition, University Clinical Hospital of Valladolid, Avenida Ramón y Cajal, 7, 47005 Valladolid, Spain
4
Department of Chemistry, Science Faculty, University of Burgos, Plaza Misael Bañuelos sn, 09001 Burgos, Spain
*
Author to whom correspondence should be addressed.
Nutrients 2020, 12(11), 3344; https://doi.org/10.3390/nu12113344
Received: 12 October 2020 / Revised: 25 October 2020 / Accepted: 28 October 2020 / Published: 30 October 2020
(This article belongs to the Section Nutritional Epidemiology)
Cystic fibrosis (CF) patients require a stable and sufficient supply of micronutrients. Since copper is an essential micronutrient for human development, a cross-sectional study was carried out to investigate the serum copper levels, serum copper/zinc (Cu/Zn) ratios, and their relationship with nutritional indicators in a group of CF patients. Anthropometric, biochemical, and dietary measurements, an abdominal ultrasound, and respiratory and pancreatic tests were conducted. Seventeen CF patients were studied (10 females, 59%), 76.5% of whom were ∆F580. Their mean serum copper (113 ± 23 μg/dL) was normal, and there was only one teenager with hypocupremia (6%) and two children with hypercupremia (18%). A significant association between serum copper and zinc levels was discovered. The Cu/Zn ratio was higher than 1.00 for 94% of patients, which is an indicator of an inflammation status. There was no significant correlation between the serum copper concentrations and respiratory and pancreatic function, respiratory colonization, and the results of the abdominal ultrasound. Linear regression analysis showed that serum copper had a positive association with both the Z-score body mass index (BMI) and mean bone conduction speed (BCS). Therefore, since 94% of CF patients had a Cu/Zn ratio > 1.00, this factor must alert us to consider the risk of zinc deficiency and high inflammatory response. The measurement of serum zinc alone does not show one’s zinc status. However, the Cu/Zn ratio may be an indicator of zinc deficiency and the inflammatory status of CF patients. View Full-Text
Keywords: hypocupremia; hypercupremia; inflammatory response; risk of zinc deficiency; serum copper/zinc ratio hypocupremia; hypercupremia; inflammatory response; risk of zinc deficiency; serum copper/zinc ratio
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MDPI and ACS Style

Escobedo-Monge, M.F.; Barrado, E.; Alonso Vicente, C.; Escobedo-Monge, M.A.; Torres-Hinojal, M.C.; Marugán-Miguelsanz, J.M.; Redondo del Río, M.P. Copper and Copper/Zinc Ratio in a Series of Cystic Fibrosis Patients. Nutrients 2020, 12, 3344. https://doi.org/10.3390/nu12113344

AMA Style

Escobedo-Monge MF, Barrado E, Alonso Vicente C, Escobedo-Monge MA, Torres-Hinojal MC, Marugán-Miguelsanz JM, Redondo del Río MP. Copper and Copper/Zinc Ratio in a Series of Cystic Fibrosis Patients. Nutrients. 2020; 12(11):3344. https://doi.org/10.3390/nu12113344

Chicago/Turabian Style

Escobedo-Monge, Marlene F.; Barrado, Enrique; Alonso Vicente, Carmen; Escobedo-Monge, María A.; Torres-Hinojal, María C.; Marugán-Miguelsanz, José M.; Redondo del Río, María P. 2020. "Copper and Copper/Zinc Ratio in a Series of Cystic Fibrosis Patients" Nutrients 12, no. 11: 3344. https://doi.org/10.3390/nu12113344

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