{"title":"Conversion of alpha-linolenic acid to palmitic, palmitoleic, stearic and oleic acids in men and women.","authors":"G C Burdge, S A Wootton","doi":"10.1016/s0952-3278(03)00111-x","DOIUrl":null,"url":null,"abstract":"<p><p>The purpose of this study was to determine whether adult humans can recycle carbon from alpha-linolenic acid (18:3n-3) into saturated (SFA) and monounsaturated (MUFA) fatty acids. Six men and six women consumed 700 mg [U-13C]-18:3n-3. Blood was collected over 21 days and breath over 24h. [13C]-labelled SFA and MUFA were detected in plasma phosphatidylcholine (PC) and triacylglycerol (TAG). Total labelled fatty acid incorporation into SFA and MUFA was five- and 25-fold greater in PC than TAG in men and women, respectively. [13C]-16:0 was the major labelled fatty acid in both fractions. Total [13C] incorporation into SFA and MUFA was 20% greater in men than women, and related positively (r(2) = 0.35, P<0.05) to the fractional recovery of labelled 18:3n-3 as 13CO2 on breath. These results suggest that the extent of partitioning towards beta-oxidation and carbon recycling may regulate the availability of 18:3n-3 for conversion to longer-chain fatty acids.</p>","PeriodicalId":20659,"journal":{"name":"Prostaglandins, leukotrienes, and essential fatty acids","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/s0952-3278(03)00111-x","citationCount":"55","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Prostaglandins, leukotrienes, and essential fatty acids","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/s0952-3278(03)00111-x","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 55
Abstract
The purpose of this study was to determine whether adult humans can recycle carbon from alpha-linolenic acid (18:3n-3) into saturated (SFA) and monounsaturated (MUFA) fatty acids. Six men and six women consumed 700 mg [U-13C]-18:3n-3. Blood was collected over 21 days and breath over 24h. [13C]-labelled SFA and MUFA were detected in plasma phosphatidylcholine (PC) and triacylglycerol (TAG). Total labelled fatty acid incorporation into SFA and MUFA was five- and 25-fold greater in PC than TAG in men and women, respectively. [13C]-16:0 was the major labelled fatty acid in both fractions. Total [13C] incorporation into SFA and MUFA was 20% greater in men than women, and related positively (r(2) = 0.35, P<0.05) to the fractional recovery of labelled 18:3n-3 as 13CO2 on breath. These results suggest that the extent of partitioning towards beta-oxidation and carbon recycling may regulate the availability of 18:3n-3 for conversion to longer-chain fatty acids.
本研究的目的是确定成年人是否可以将α -亚麻酸(18:3n-3)中的碳循环转化为饱和(SFA)和单不饱和(MUFA)脂肪酸。六名男性和六名女性摄入了700毫克[U-13C]-18:3n-3。在21天内采集血液，在24小时内采集呼吸。血浆磷脂酰胆碱(PC)和甘油三酯(TAG)中检测[13C]标记的SFA和MUFA。在男性和女性中，PC组中SFA和MUFA的总标记脂肪酸掺入量分别是TAG的5倍和25倍。[13C]-16:0是两个组分中主要的标记脂肪酸。SFA和MUFA中[13C]总掺入量男性比女性多20%，两者呈正相关(r(2) = 0.35, P
期刊介绍：
The role of lipids, including essential fatty acids and their prostaglandin, leukotriene and other derivatives, is now evident in almost all areas of biomedical science. Cell membrane behaviour and cell signalling in all tissues are highly dependent on the lipid constituents of cells. Prostaglandins, Leukotrienes & Essential Fatty Acids aims to cover all aspects of the roles of lipids in cellular, organ and whole organism function, and places a particular emphasis on human studies. Papers concerning all medical specialties are published. Much of the material is particularly relevant to the development of novel treatments for disease.
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