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補充綜合抗氧化維生素增強高血脂症抽煙者之抗氧化狀態與減少血漿及低密度脂蛋白之脂質過氧化

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補充綜合抗氧化維生素增強高血脂症抽煙者之抗氧化狀態

與減少血漿及低密度脂蛋白之脂質過氧化

楊素卿

Abstract

本研究目的在於瞭解補充綜合抗氧化維生素(β-胡蘿蔔素+維生素C+維生素E)對高血脂症抽 煙男性的抗氧化狀態、血漿與低密度脂蛋白中脂質過氧化、血壓與血漿脂質濃度的影響;同時評 估補充劑量(15mgβ-胡蘿蔔素+500mg維生素C+400mg維生素E;補充低劑量組,或 30mg-β胡蘿蔔素+1000mg維生素C+800mg維生素E;補充高劑量組)和補充時間(3 或 6 週)之 影響程度。結果顯示:高血脂症抽煙者之飲食攝取量,並不受補充劑量或補充時間的影響。然而, 補充綜合抗氧化維生素三週後,高血脂症抽煙者血漿中之抗氧化維生素濃度均比實驗前明顯上 升,並有持續上升的現象,於第六週時,補充低劑量組血漿中的β-胡蘿蔔素、維生素C和維生 素E濃度分別比實驗前明顯上升 191%、98%與 130%,而補充高劑量組血漿中的β-胡蘿蔔 素、維生素C和維生素E濃度則分別比實驗前明顯上升 212%、216%與 198%。且低、高劑量 組血漿中總抗氧化狀態均顯著提升。血漿中脂質過氧化物的濃度於補充低劑量組第三週時比實驗 前明顯減少 16%;而補充高劑量組於第六週亦明顯降低仰 17%。兩組低密度脂蛋白中脂質過 氧化物的濃度也隨著抗氧化維生素補充時間的延長而下降。但綜合抗氧化維生素的補充於研究期 間並不影響高血脂症抽煙者之血壓與血漿脂質濃度。因此,補充綜合抗氧化維生素六週後,高血 脂症抽煙者血漿中抗氧化狀態提昇,而血漿與低密度脂蛋白中脂質過氧化物含量則降低。然而, 補充低、高劑量組對於抗氧化狀態的影響程度則相似。

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