title: Serum zinc concentration in cystic fibrosis patients with CFTR I1234V mutation associated with pancreatic sufficiency.
abstract: OBJECTIVE
  To determine serum zinc (Zn) level among cystic fibrosis (CF) patients with homozygous CFTR I1234V mutation associated with pancreatic sufficiency (PS).
  
  
  METHODS
  A cross-sectional study was conducted including both pediatric and adult CF patients. Data on age, weight, height, body mass index (BMI), BMI Z-score, FEV1, and chronic Pseudomonas aeruginosa infection were collected. Serum Zn, albumin, and total proteins were measured and analyzed.
  
  
  RESULTS
  Forty-five CF patients with homozygous CFTR I1234V mutation belonging to a large Arab kindred tribe and eight CF patients with other mutations associated with pancreatic insufficiency (PI). Patient's age ranged from 2 to 49 years with a mean age of 15.1 ± 9.1 years and mean plasma Zn of 0.78 ± 0.15 mcg/mL. Seven (13.2%) patients with CFTR I1234V and PS had low Zn levels (<0.6 mcg/mL). Mean age among Zn deficient group was significantly older. The mean FEV1 in the deficient group was found to be insignificant low. Persistent P. aeruginosa colonization was more prevalent in Zn deficient group. BMI Z-scosre of CF patients were positively correlated with Zn levels. Forty-five healthy subjects belonging to the same Arab tribe were selected in order to assess their Zn levels and their mean plasma Zn of 0.84 ± 0.11 mcg/mL (range 0.65-1.1 mcg/mL) with mean age 20.4 ± 10.1 years (range 6-40 years).
  
  
  CONCLUSIONS
  These findings suggest that Zn deficiency can occur in CF patients with PS. The association of Zn levels and the frequency of P. aeruginosa isolated in CF patients need further investigation.
authors.affiliation: Pediatric Pulmonology, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Atqah
authors.initials: A
authors.lastname: AbdulWahab
authors.affiliation: Pediatric Pulmonology, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Abushahin
authors.affiliation: Internal Medicine, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Mona
authors.initials: M
authors.lastname: Allangawi
authors.affiliation: Medical Research Center, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Prem
authors.initials: P
authors.lastname: Chandra
authors.affiliation: Laboratory Medicines and Pathology, Hamad Medical Corporation, Clinical Biochemistry Division, Doha, Qatar.
authors.forename: Mohamed Osman
authors.initials: MO
authors.lastname: Abdel Rahman
authors.affiliation: Pediatric endocrinology, Hamad Medical Corporation, Doha, Qatar.
authors.forename: Ashraf
authors.initials: A
authors.lastname: Soliman
mesh_terms: D000293:Adolescent; D015992:Body Mass Index; D002648:Child; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D003550:Cystic Fibrosis / Q000097:blood* / Q000150:complications / Q000235:genetics* / Q000382:microbiology; D019005:Cystic Fibrosis Transmembrane Conductance Regulator / Q000235:genetics*; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008297:Male; D009154:Mutation; D010179:Pancreas / Q000503:physiopathology*; D011552:Pseudomonas Infections / Q000097:blood / Q000150:complications / Q000382:microbiology; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D011780:Qatar / Q000453:epidemiology; D055815:Young Adult; D015032:Zinc / Q000097:blood*
chemical_list: D019005:Cystic Fibrosis Transmembrane Conductance Regulator; D015032:Zinc
keywords: CFTR I1234V - cystic fibrosis - pancreatic sufficient - serum zinc