Journal of Yeungnam Medical Science

Original article

Polyunsaturated fatty acids, lung function, and health-related quality of life in patients with chronic obstructive pulmonary disease: Hyunji Choi, Taeyun Kim; Yeungnam Univ J Med. 2020;37(3):194-201. Published online April 7, 2020; DOI: https://doi.org/10.12701/yujm.2020.00052

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Background
Dietary polyunsaturated fatty acids (PUFA) are thought to modify systemic inflammation. The present study aimed to evaluate the relationship between PUFA intake, lung function, and health-related quality of life (HRQoL) in patients with chronic obstructive pulmonary disease (COPD).
Methods
In this study, we used the dataset of 6th Korea National Health and Nutrition Examination Survey, in which, a total of 22,948 individuals including 573 participants with a high probability of developing COPD were enrolled. Participants with missing data for the investigated variables were excluded. Linear regression analyses were used to evaluate the association between PUFA intake (omega-3 [N3], omega-6 [N6], and total) with lung function, and HRQoL. HRQoL was determined according to the European Quality of Life-5 Dimensions (EQ-5D). Subgroup analysis of older patients was performed. Age, sex, body mass index, smoking, alcohol, education, residence, total calorie intake, and predicted FEV1% were adjusted in all analyses.
Results
Although lung function was not associated with PUFA intake, EQ-5D index was remarkably associated with N3, N6, and total PUFA intake in a dose-dependent manner. This association was more pronounced in elderly COPD patients. Mean levels of N3, N6, and total PUFA intake were significantly higher in patients having better HRQoL with respect to mobility, self-care, and usual activities.
Conclusion
Our results suggest that N3, N6, and total PUFA intake are associated with HRQoL in COPD patients. This association may be attributed to mobility, self-care, and usual activities. Further longitudinal study is required to clarify this relationship.

Citations

Citations to this article as recorded by

Nutrition as a modifiable factor in the onset and progression of pulmonary function impairment in COPD: a systematic review
Lieke E J van Iersel, Rosanne J H C G Beijers, Harry R Gosker, Annemie M W J Schols
Nutrition Reviews.2022; 80(6): 1434. CrossRef
Medium and long chain free fatty acid receptors in the pathophysiology of respiratory diseases
O. Yu. Kytikova, T. P. Novgorodtseva, Yu. K. Denisenko, M. V. Antonyuk, T. A. Gvozdenko
Bulletin Physiology and Pathology of Respiration.2021; (80): 115. CrossRef

Original Article

The Effect of Long Chain N-3 Polyunsaturated Fatty Acids on Development of Collagen-induced Arthritis in Rats.: Kyung Ho Shin, Se Dong Kim, Hwan Jin Jeon, Eung Chan Jang, Suck Kang Lee; Yeungnam Univ J Med. 2002;19(1):39-48. Published online June 30, 2002; DOI: https://doi.org/10.12701/yujm.2002.19.1.39

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Abstract PDF: BACKGROUND
The treatment of rheumatoid arthritis still depend on conserve therapy in major. Recent studies report that n-3 polyunsaturated fatty acids(PUFA) could modulate the incidence and progress of arthritis. The purpose of this study was to investigate the effects of n-3 PUFA on the development of collagen-induced arthritis in rats. MATERIALS AND METHODS: Female Louvain rats were used for this experiment. Rats were randomly assigned into either normal(n=8) or collagen-immunized groups, and collagen immunized groups were divided into control(n=8, normal diet) and n-3 PUFA(n=8, 5% n-3 PUFA in diet) groups. One week after feeding n-3 PUFA to rats, they were immunized with type II collagen emulsified in incomplete Freund's adjuvant into tail and back. Development of arthritis was confirmed by x-ray and microscopic examination. RESULTS: Incidence of arthritis at the 5th week after immunization was 38% in control and 0% in n-3 PUFA. Rats with arthritis showed edema in hind paws and inflammation in synovial membrane of the knee joint. Plasma glucose and insulin were not changed by both of immunization and diet. Plasma triglycerides and cholesterol concentrations were decreased by n-3 PUFA. CONCLUSION: n-3 PUFA may prevent or treat collagen-induced arthritis in rats. Further studies are needed for action mechanism of it.

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