Plasma zinc response to a breakfast meal or fasting in elderly women.
Biol Trace Elem Res
; 42(2): 129-42, 1994 Aug.
Article
en En
| MEDLINE
| ID: mdl-7981003
The aim of this study was to determine whether the postprandial decline in plasma zinc concentration is altered by aging. Eleven women, between the ages of 65 and 82 yr, participated in two separate experimental protocols: a high carbohydrate breakfast trial and a fasting trial. Plasma zinc concentrations were measured from blood samples obtained at 8:00 AM (baseline fasting) and at 30-min intervals until 1:00 PM during each trial. Following the breakfast meal, plasma zinc concentrations declined 14% from 75 +/- 1 to 65 +/- 2 micrograms/dL (p < 0.05), reaching a nadir 2.7 +/- 0.2 h after the meal. This decline was significantly (p < 0.0001) greater than the 3.6% fall observed during the fasting trial. Postprandial changes in the plasma zinc concentrations were correlated with postprandial changes in serum glucose (r = -0.43, p < 0.001), serum insulin (r = -0.17, p < 0.01), and serum phosphorus (r = 0.32, p < 0.005). These data show that plasma zinc concentrations decline following food intake in elderly women in the same manner as previously described for younger adult women.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Zinc
/
Envejecimiento
/
Ayuno
/
Ingestión de Alimentos
Límite:
Aged
/
Aged80
/
Female
/
Humans
Idioma:
En
Revista:
Biol Trace Elem Res
Año:
1994
Tipo del documento:
Article
Pais de publicación:
Estados Unidos