Seasonal variation of serum concentrations of beta-carotene and alpha-tocopherol
| Autor: | Matti Rautalahti, Jarmo Virtamo, Demetrius Albanes, Jari Haukka, E. Roos, C.-G. Gref |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Vitamin
Male medicine.medical_specialty medicine.medical_treatment Population Medicine (miscellaneous) chemistry.chemical_compound Animal science beta-Carotene Internal medicine medicine Humans Vitamin E education Carotenoid Chromatography High Pressure Liquid Finland Aged chemistry.chemical_classification education.field_of_study Nutrition and Dietetics Carotene Middle Aged beta Carotene Carotenoids Diet Endocrinology chemistry Seasons alpha-Tocopherol Body mass index |
| Zdroj: | The American journal of clinical nutrition. 57(4) |
| ISSN: | 0002-9165 |
| Popis: | We studied the seasonal variation in serum concentrations of�3-carotene and a-tocopherol (HPLC) in 17 247 Finnish men who smoked. Month ofblood sampling was a sta- tistically significant determinant of serum concentration of 13- carotene in a regression model including age, body mass index, alcohol and fat intakes, total serum cholesterol, and daily cig- arettes as covariates. The serum concentrations were lowest in April-June and highest in October-November. The I.5-fold in- crease in the serum concentration of 13-carotene during the fall reflects the seasonality of dietary sources of carotenoids in Finland. The serum concentrations of a-tocopherol demon- strated no seasonal variation but remained close to 27.6 �zmol/ L throughout the year. The results indicate that the seasonal variation ofserum concentrations off3-carotene should be taken into account in long-term studies in which comparison of groups or individuals is based on serum concentrations. Am J C/in Nuir 1993:57:551-6. |
| Databáze: | OpenAIRE |
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