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Hyojee Joung,Byung Yeol Chun,Young Sun Choi,Sueun Kim,Wee Hyun Park,Jae Eun Jun,Shung Chull Chae,Kyung Eun Song,Sung Hee Cho,Hee Sook Oh 한국식품영양과학회 2001 Preventive Nutrition and Food Science Vol.6 No.1
This study was carried out to evaluate whether antioxidant nutrient supplementation with α-tocopherol, vitamin C, β-carotene, and selenium reduces the lipid peroxide levels and increases the anti oxidative enzyme activities in patients with coronary heart disease. Eighty nine patients participated in a randomized, double-blind, placebo-controlled trial. The antioxidant group (45 patients) was given daily doses of α-tocopherol (400 IU), vitamin C (50 ㎎), β-carotene (15 ㎎), and selenium (50 ㎎) and forty four patients received a placebo. Thirty eight subjects (84.4%) of the antioxidant group and thirty nine subjects (88.6%) of the placebo group completed the three-month supplementation. Serum levels of tocopherol, vitamin C and β-carotene significantly increased in the antioxidant group compared with the baseline (p<0.05). Thiobarbituric acid-reactive substances (TBARS) decreased significantly (0.6 n㏖ MDA/mL) in the antioxidant group compared with that (0.09 n㏖ MDA/mL) in the placebo group (p=0.03). However, antioxidant supplementation did not affect the level of oxidized-LDL measured as autoantibodies against oxidized-LDL. The superoxide dimutase activity in red blood cells increased in the antioxidant group compared with the baseline (p<0.05). However, glutathione peroxidase activities did not change after supplementation in both groups, and catalase activity significantly decreased in the placebo group (p<0.05). These results suggest that antioxidant supplementation for 3 months with α-tocopherol, vitamin C, β-carotene and selenium in patients with coronary heart disease may be partially protective against oxidative stress.
Joung, Hyojee,Chun, Byung Yeol,Choi, Young Sun,Kim, Sueun,Park, Wee Hyun,Jun, Jae Eun,Chae, Shung Chull,Song, Kyung Eun,Cho, Sung Hee,Oh, Hee Sook The Korean Society of Food Science and Nutrition 2001 Preventive Nutrition and Food Science Vol.6 No.1
This study was carried out to evaluate whether antioxidant nutrient suppplementation with $\alpha$-tocopherol, vitamin C, $\beta$-carotene, and selenium reduces the lipid peroxide levels and increases the antioxidative enzyme activities in patients with coronary hart disease. Eighty nine patients participated in a randomized, double-blind, placebo-controlled trial. The antioxidant group (45 patients) was given daily doses of $\alpha$-tocopherol (400 IU), vitamin C (50 mg), $\beta$-carotene (15 mg), and selenium (50 $\mu\textrm{g}$) and forty four patients received a placebo. Thirty eight subjects (84.4%) of the antioxidant group and thirty nine subjects (88.6%) of the placebo group completed the three-month supplementation. Serum levels of tocopherol, vitamin C and $\beta$-carotene significantly increased in the antioxidant group compared with the baseline (p<0.05). Thiobarbituric acid-reactive substances(TBARS) decreased significantly (0.6 nmol MDA/mL) in the antioxidant group compared with that (0.09 nmol MDA/mL) in the placebo group (p=0.03). However, antioxidant supplementation did not affect the level of oxidized-LDL measured as autoantibodies against oxidized-LDL. The superoxide dimutase activity in red blood cells increased in the antioxidant group compared with the baseline (p<0.05). However, glutathione peroxidase activities did not change after supplementation in both groups, and catalase activity significantly decreased in the placebo group (p<0.05). These results suggest that antioxidant supplementation for 3 months with $\alpha$-tocopherol, vitamin C, $\beta$-carotene and selenium in patients with coronary heat disease may be partially protective against oxidative stress.
정효지(Joung Hyojee),윤진숙(Yoon Jin-Sook),최슬기(Choi Seul Ki),신상아(Shin Sangah),최영선(Choi Young-Sun),권오란(Kwon Oran),장남수(Chang Namsoo) 韓國營養學會 2009 Journal of Nutrition and Health Vol.42 No.4
현재 코덱스 NRVs 중에는 새로이 각국에서 제정된 영양섭취기준과 상당히 차이가 있는 영양소들이 있어서 개정을 위한 검토 작업이 시급히 필요하다. DRIs 중 EARs 혹은 RDAs를 코덱스 NRVs 기준으로 설정하는 것에는 각각이 장점과 단점이 있으므로, 각 기준에 대한 장점과 문제점을 충분히 고려하여 선정하여야 한다. 각 나라의 DRIs를 NRVs 기준으로 이용하거나 국제적으로 영양소별로 단일 값을 정한 후 각 나라의 인구 구조를 근거로 NRVs 기준을 설정하는 것은 국가마다 서로 다른 기준을 설정하는 결과를 초래하고 이로 인한 소비자의 혼란 및 국가 간 교역에 혼란을 초래할 가능성이 크므로, 각 나라의 인구 구조를 적용한 값을 NRVs기준으로 설정하는 것은 문제가 있다고 사료된다. 코덱스 NRVs 설정시 인구 구조에 근거한 RDA를 사용할 경우 연령 집단 간 편차가 크면 산출된 값이 lowest UL 보다 높을 수 있으므로, 성인 이외의 연령층 (어린이)에 대해서 바람직한 적용 방안을 후속 연구를 통해 별도로 고려해 볼 필요가 있다. 따라서 기존의 Codex 기준과 같이 국제적으로 새로이 설정된 DRIs를 전면적으로 검토하고 이를 최대한 반영하여 영양소별로 단일 값을 제시하여 각 나라에서 이용하도록 하는 것이 바람직하다고 사료된다. Codex Nutrient Reference Values (NRVs) were based on the 1988 Helsinki report and a single set of NRVs was established for the general population over 3 years for the purpose of food labeling in 1993. Dietary Reference Intakes (DRIs) with new concepts were developed in many countries recently. Hence there has been broad discussion regarding establishment of new NRVs using DRIs, which include estimated average requirement (EAR), recommended intake (RI or RDA), adequate intake (AI), and tolerable upper intake level (UL) in the world. This study was carried out to review various possible values for Codex NRVs such as population-weighted EAR, population-weighted RDA, and populationbased RDA. The values were simulated using DRIs and population distribution of Korea, USA, Japan, Philippines, Germany and England, and compared to the current Codex values and the highest RDA and the lowest UL among populations with different life-stage. Since population weighted/based values are necessary to be updated according to the population changes and are different across countries, inconsistency can be a serious barrier in international transactions. For some of nutrients such as vitamin A and zinc, values based on population-based RDA or the highest RDA were higher than the lowest UL. Therefore, careful considerations should be given before establishing Codex NRVs.