Multiple linear regression analysis of the seasonal changes in the serum concentration of beta-cryptoxanthin.
J Nutr Sci Vitaminol (Tokyo)
; 50(3): 196-202, 2004 Jun.
Article
en En
| MEDLINE
| ID: mdl-15386932
ABSTRACT
Beta-cryptoxanthin (beta-CRX) is a carotenoid pigment found in Satsuma mandarin (Citrus unshiu Marc.) fruit, which is heavily produced in Japan. In this study, we evaluated the seasonal changes in the serum beta-CRX level and investigated predictors of serum beta-CRX level by multiple linear regression analysis. Blood tests and self-administered questionnaires were used every other month for one year. The subjects were healthy volunteers, 15 males and 12 females. The serum beta-CRX levels increased dramatically as the intake of Satsuma mandarin increased; the maximum increase was noted in January. Multiple linear regression analysis showed that, in males, the serum beta-CRX level could be predicted by Satsuma mandarin intake, age and the month of blood sampling; however, it was inversely associated with alcohol and smoking habits. Conversely, in females, the serum beta-CRX concentration could be predicted by Satsuma mandarin intake, the month of blood sampling and age; however, it was inversely associated with body mass index. The results of multiple linear regression analysis suggest that the serum beta-CRX levels can be used to evaluate the intake volume of Satsuma mandarin. Furthermore, beta-CRX is a useful biomarker to estimate the beneficial effects of Satsuma mandarin intake in epidemiological studies.
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Bases de datos:
MEDLINE
Asunto principal:
Estaciones del Año
/
Modelos Lineales
/
Beta Caroteno
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Nutr Sci Vitaminol (Tokyo)
Año:
2004
Tipo del documento:
Article
País de afiliación:
Japón