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Oxidative Stress in Cystic Fibrosis: Dietary and Metabolic Factors

Lisa G. Wood, BSc (Hons), Dominic A. Fitzgerald, MBBS, PhD,, Peter G. Gibson, MBBS, David M. Cooper, MBBS, Clare E. Collins, PhD and Manohar L. Garg, PhD

Discipline of Nutrition and Dietetics, University of Newcastle (L.G.W., M.L.G.), John Hunter Children’s Hospital, Newcastle
Department of Paediatrics (D.A.F., D.M.C.), John Hunter Children’s Hospital, Newcastle
Airway Research Centre, Department of Respiratory Medicine (P.G.G.), John Hunter Children’s Hospital, Newcastle
Department of Dietetics (C.E.C.), John Hunter Children’s Hospital, Newcastle
Department of Respiratory Medicine, New Children’s Hospital, Sydney (D.A.F.), New South Wales, AUSTRALIA



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  		Fig. 1. Plasma 8-iso-PGF2{alpha} levels in CF subjects (n=21) versus age- and gender-matched controls (n=21). Plot shows medians and interquartile ranges. p=0.001.

 


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  		Fig. 2. Plasma 8-iso-PGF2{alpha} concentrations versus white cell count (r=0.310, p=0.045), neutrophil count (r=0.308, p=0.047), monocyte count (r=0.367, p=0.017) in subjects with CF (n=21) and controls (n=21). {blacksquare}=CF, +=Controls.

 


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  		Fig. 3. Plasma 8-iso-PGF2{alpha} concentrations versus plasma vitamin E (r=-0.370, p=0.016), ß-carotene (r=-0.421, p=0.006) and vitamin C (r=-0.434, p=0.005) concentrations in subjects with CF (n=21) and controls (n=21). {blacksquare}=CF, +=Controls.

 


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  		Fig. 4. Plasma ß-carotene concentrations versus white cell count (r=-0.423, p=0.005), neutrophil count (r=-0.461, p=0.002) and monocyte count (r=-0.305, p=0.049) in subjects with CF (n=21) and controls (n=21). {blacksquare}=CF, +=Controls.

 


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  		Fig. 5. Plasma vitamin E concentrations versus neutrophil count (r=-0.339, p=0.028) and monocyte count (r=-0.344, p=0.026) in subjects with CF (n=21) and controls (n=21). {blacksquare}=CF, +=Controls.

 


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  		Fig. 6. Plasma ß-carotene concentrations versus dietary intake of ß-carotene (r=0.396, p=0.010) and plasma vitamin C concentrations versus dietary intake of vitamin C (r=0.524, p=0.001) in subjects with CF (n=21) and controls (n=21). {blacksquare}=CF, +=Controls.

 




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