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  • Title: Randomized study of the safety and efficacy of fish oil (omega-3 fatty acid) supplementation with dietary and exercise counseling for the treatment of antiretroviral therapy-associated hypertriglyceridemia.
    Author: Wohl DA, Tien HC, Busby M, Cunningham C, Macintosh B, Napravnik S, Danan E, Donovan K, Hossenipour M, Simpson RJ.
    Journal: Clin Infect Dis; 2005 Nov 15; 41(10):1498-504. PubMed ID: 16231263.
    Abstract:
    BACKGROUND: Omega-3 fatty acids (fish oils) reduce fasting serum triglyceride levels and cardiovascular disease risk in individuals without HIV infection. Whether omega-3 fatty acid supplementation can reduce hypertriglyceridemia associated with antiretroviral therapy is not known. METHODS: We conducted an open-label, randomized trial that enrolled 52 patients receiving > or =3 active antiretrovirals who had fasting triglyceride levels of >200 mg/dL and were randomized to receive nutritionist-administered dietary and exercise counseling with or without fish oil supplementation for 16 weeks. RESULTS: Patients assigned to receive fish oil experienced a 25% mean decline in fasting triglyceride levels at week 4 (95% CI, -34.6% to -15.7% change), compared with a 2.8% mean increase among patients assigned to receive counseling alone (95% CI, -17.5% to +23.1% change) (P=.007). By week 16, the mean reduction in triglyceride levels in the fish oil arm remained significant, at 19.5% (95% CI, -34.9% to -4.0% change), whereas the mean decrease in the diet and exercise only arm was 5.7% (95% CI, -24.6% to +13.2% change); however, the difference between study arms was no longer statistically significant (P=.12). Low-density lipoprotein cholesterol levels had increased by 15.6% (95% CI, +4.8% to +26.4% change) at week 4 and by 22.4% (95% CI, +7.91% to +36.8% change) at week 16 in the fish oil arm but did not change in the diet and exercise only group. Fish oil was well tolerated; only 1 patient experienced treatment-limiting toxicity. Patients assigned to receive fish oil experienced a 25% mean decline in fasting triglyceride levels at week 4 (95% CI, -34.6% to -15.7% change), compared with a 2.8% mean increase in patients assigned to receive counseling alone (95% CI, -17.5% to 23.1% change) (P=.007). By week 16, the mean reduction in triglyceride levels in the fish oil arm remained significant, at 19.5% (95% CI, -34.9% to -4.0% change), whereas the mean decrease in the diet and exercise only arm was 5.7% (95% CI, -24.6% to 13.2% change); however, the difference between study arms was no longer statistically significant (P=.12). Low-density lipoprotein cholesterol levels had increased by 15.6% (95% CI, 4.8%-26.4% change) at week 4 and by 22.4% (95% CI, 7.91%-36.8% change) at week 16 in the fish oil arm but did not change in the diet and exercise only group. Fish oil was well tolerated; only 1 patient experienced treatment-limiting toxicity. CONCLUSIONS: Supplementation with omega-3 fatty acids in combination with dietary and exercise counseling was well tolerated and reduced fasting triglyceride levels in patients receiving antiretrovirals. To what extent the increase in low-density lipoprotein cholesterol levels observed in patients assigned this intervention is attributable to omega-3 fatty acid supplementation and whether this increase attenuates any benefit in lowering triglyceride levels is unclear. Given these results, further investigation of omega-3 fatty acid supplementation for the treatment of hypertriglyceridemia in HIV-infected patients is warranted.
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