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Changes in plasma phospholipid fatty acids and their relationship to disease activity in rheumatoid arthritis patients treated with a vegetarian diet

Published online by Cambridge University Press:  09 March 2007

Margaretha A. Haugen
Affiliation:
Oslo Sanitetsforening Rheumatism Hospital, Oslo, Norway
Jens Kjeldsen-Kragh
Affiliation:
Institute of Immunology and Rheumatology, National Hospital, Oslo, Norway
Kristian S. Bjervea
Affiliation:
Department of Chemical Chemistry, Regional Hospital, University of Trondheim, Trondheim, Norway
Arne T. Høstmark
Affiliation:
Department of Preventive Medicine, University of Oslo, Norway
Øystein Førre
Affiliation:
Oslo Sanitetsforening Rheumatism Hospital, Oslo, Norway
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Abstract

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In a controlled clinical trial we have recently shown that patients with rheumatoid arthritis (RA) improved after fasting for 7–10 d and that the improvement could be sustained through 3.5 months with a vegan, diet and 9 months with a lactovegetarian diet. Other studies have indicated that the inflammatory process in R A can be reduced through manipulation of dietary fatty acids. A switch to a vegetarian diet significantly alters the intake of fatty acids. Therefore, we have analysed the changes in fatty acid profiles of the plasma phospholipid fraction and related these changes to disease activity. The concentrations of the fatty acids 20: 3n-6 and 20: 4n-6 were significantly reduced after 3.5 months with a vegan diet (P < 0.0001 and P < 0.01 respectively), but the concentration increased to baseline values with a lactovegetarian diet. The concentration of 20: 5n-3 was significantly reduced after the vegan diet (P < 0.0001) and the lactovegetarian diet periods (P < 0.01). There was no significant difference in fatty acid concentrations between diet responders and diet non-responders after the vegan or lactovegetarian diet periods. Our results indicate that the changes in the fatty acid profiles cannot explain the clinical improvement.

Type
Vegetarian diets and plasma phospholipids in rheumatoid arthritis
Copyright
Copyright © The Nutrition Society 1994

References

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