The duodenal mucosa in patients with renal failure: response to 1,25(OH)2D3.

Abstract:

:The structure of the duodenal mucosa was evaluated in duodenal biopsy samples obtained from patients with moderate renal failure (MRF) and in dialysis patients (HD) in an effort to examine the possibility that changes in duodenal mucosa may contribute to the impaired calcium absorption in renal failure (RF). The effect of therapy with 1,25(OH)2D3 on the duodenal mucosa in the HD patients was also studied. The results show that both MRF and HD patients have reduction in calcium reabsorption and in the length of their intestinal villi and crypts of Lieberkuhn. In the HD patients, these structural changes were more severe. Treatment with 1,25(OH)2D3 produced significant improvement in calcium reabsorption (P less than 0.01) as well as in length of villus and crypt (P less than 0.02) and increased mitotic activity in the crypts (P 0.02). Electron microscopy revealed the microvilli to be shorter, irregularly distributed, moth-eaten, and grainy, with these abnormalities disappearing after treatment. The data show that duodenal mucosa in RF exhibits structural abnormalities, which were normalized after 1,25(OH)2D3 therapy, and suggest that these derangements may play a role in the defective calcium reabsorption in RF.

journal_name

Kidney Int

journal_title

Kidney international

authors

Goldstein DA,Horowitz RE,Petit S,Haldimann B,Massry SG

doi

10.1038/ki.1981.23

subject

Has Abstract

pub_date

1981-02-01 00:00:00

pages

324-31

issue

2

eissn

0085-2538

issn

1523-1755

pii

S0085-2538(15)32440-6

journal_volume

19

pub_type

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