Gender differences in antacid-induced phosphate deprivation in rats

Kathleen Schwarz, Debra C. Zimmerman, David H. Alpers, Louis V. Avioli

Research output: Contribution to journalArticle

Abstract

To determine whether an animal model could be used to study the susceptibility of women to antacid-induced phosphate deficiency, 6-wk-old male and female rats were given basic aluminum carbonate gel (Basaljel) (1 ml/100 g body wt) or distilled water by gastric intubation daily for 3 wk. Rats were fed either ad libitum (group 1) or by pair-feeding (group 2) with pelleted rat food containing 0.74% phosphorus. In group 1, baseline, 1-wk, and 3-wk values for serum phosphorus in Basaljel-treated females were 7.7 ± 0.2, 6.3 ± 0.2, and 6.2 ± 0.2 mg/dl, respectively. Corresponding values for control females were 7.8 ± 0.3, 7.0 ± 0.2, and 7.3 ± 0.2 mg/dl. Values for treated females were significantly lower (p <0.02) than values for control females by 1 wk of treatment. Basaljel-treated males did not differ from controls. The pattern for group 2 was similar. Intestinal absorption and intramuscular stores of phosphate were assessed in group 1. After 3 wk of treatment, [32P]phosphate assimilation from the duodenum into the body was lower in Basaljel-treated females than in controls (33.8% ± 1.9% vs. 49.8% ± 6.2% of the luminally administered dose, p <0.05). This was due to increased retention of [32P]phosphate in the intestine of treated females (19.9% ± 2.0% vs. 11.9% ± 2.4% for control females, p <0.02). Results in jejunum were similar. Total intramuscular phosphate in females was significantly lower (p <0.005) than in males both before and after antacid treatment. Thus hypophosphatemia in the female rat during antacid administration is probably secondary to the additive effects of decreased assimilation and decreased soft tissue stores of phosphate.

Original languageEnglish (US)
Pages (from-to)313-320
Number of pages8
JournalGastroenterology
Volume89
Issue number2
StatePublished - 1985
Externally publishedYes

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Antacids
Phosphates
Phosphorus
Hypophosphatemia
Intestinal Absorption
Jejunum
Duodenum
Intubation
Intestines
Stomach
Therapeutics
Animal Models
basic aluminum carbonate gel
Food

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Schwarz, K., Zimmerman, D. C., Alpers, D. H., & Avioli, L. V. (1985). Gender differences in antacid-induced phosphate deprivation in rats. Gastroenterology, 89(2), 313-320.

Gender differences in antacid-induced phosphate deprivation in rats. / Schwarz, Kathleen; Zimmerman, Debra C.; Alpers, David H.; Avioli, Louis V.

In: Gastroenterology, Vol. 89, No. 2, 1985, p. 313-320.

Research output: Contribution to journalArticle

Schwarz, K, Zimmerman, DC, Alpers, DH & Avioli, LV 1985, 'Gender differences in antacid-induced phosphate deprivation in rats', Gastroenterology, vol. 89, no. 2, pp. 313-320.
Schwarz, Kathleen ; Zimmerman, Debra C. ; Alpers, David H. ; Avioli, Louis V. / Gender differences in antacid-induced phosphate deprivation in rats. In: Gastroenterology. 1985 ; Vol. 89, No. 2. pp. 313-320.
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