Calcium absorption from milk in lactase-deficient subjects.
Am J Clin Nutr
; 49(2): 377-84, 1989 Feb.
Article
em En
| MEDLINE
| ID: mdl-2492746
ABSTRACT
Intestinal calcium absorption from milk containing lactose (+) and from another containing glucose (-) was studied in eight patients with normal lactase (NL) and seven lactase-deficient (LD) subjects to determine if lactase deficiency is implicated in Ca absorption. The results were compared with data obtained from Ca ingestion in a water solution. Ca absorption was measured by a double-isotope technique and the kinetic indices were obtained by a deconvolution method. With (-), Ca absorption was identical in NL and LD subjects and slightly higher than with water solution (15%, NS). With (+), Ca absorption in NL subjects was identical with that from water solution; in LD subjects it increased (23%, p less than 0.02). These data indicate that Ca is absorbed equally well from milk as from water solution; (+) favors Ca absorption in LD subjects, which suggests that milk ingestion might be encouraged in LD subjects to avoid Ca deficiency; and (-) should be a valuable alternative for lactose-intolerant patients.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cálcio
/
Beta-Galactosidase
/
Leite
/
Galactosidases
/
Absorção Intestinal
Tipo de estudo:
Clinical_trials
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
1989
Tipo de documento:
Article