BACKGROUND: In cystic fibrosis (CF), changes in fatty acid (FA) composition of serum phospholipids (PL) and cell membranes can account, in part, for the inflammatory state of the disease. The severity of the genotype is known to correlate with the degree of FA changes. Liver diseases, such as cholestasis and cirrhosis are also known to influence FA status. Until now, there is no data on the influence of CF related liver disease (CFRLD) on the FA status of CF patients. The aim of this study was to evaluate, whether the presence of CFRLD influences FA status. METHODS: A fasting blood sample for the determination of serum vitamin E and PL-FA composition was collected from 79 CF patients with stable pulmonary disease and under good control in our CF centre. Patients with CFRLD (n=13) were compared to CF patients with the same severity of genotype (n=66) but without CFRLD. RESULTS: The CF patients with CFRLD had lower docosahexaenoic acid (DHA, 22:6n-3) and increased docosatetraenoic acid (22:4n-6). There were no significant differences in the precursors of these FAs. CONCLUSIONS: DHA concentration in patients with CFRLD is decreased more substantially compared with their genotype controls. The presence of CFRLD should be taken into account in future FA studies in CF patients.
BACKGROUND: In cystic fibrosis (CF), changes in fatty acid (FA) composition of serum phospholipids (PL) and cell membranes can account, in part, for the inflammatory state of the disease. The severity of the genotype is known to correlate with the degree of FA changes. Liver diseases, such as cholestasis and cirrhosis are also known to influence FA status. Until now, there is no data on the influence of CF related liver disease (CFRLD) on the FA status of CFpatients. The aim of this study was to evaluate, whether the presence of CFRLD influences FA status. METHODS: A fasting blood sample for the determination of serum vitamin E and PL-FA composition was collected from 79 CFpatients with stable pulmonary disease and under good control in our CF centre. Patients with CFRLD (n=13) were compared to CFpatients with the same severity of genotype (n=66) but without CFRLD. RESULTS: The CFpatients with CFRLD had lower docosahexaenoic acid (DHA, 22:6n-3) and increased docosatetraenoic acid (22:4n-6). There were no significant differences in the precursors of these FAs. CONCLUSIONS:DHA concentration in patients with CFRLD is decreased more substantially compared with their genotype controls. The presence of CFRLD should be taken into account in future FA studies in CFpatients.
Authors: Sławomira Drzymała-Czyż; Patrycja Krzyżanowska; Berthold Koletzko; Jan Nowak; Anna Miśkiewicz-Chotnicka; Jerzy A Moczko; Aleksandra Lisowska; Jarosław Walkowiak Journal: Int J Mol Sci Date: 2017-01-18 Impact factor: 5.923