The effect of phototherapy on intestinal mucosal enzyme activity in the gunn rat

Gabriel Dinari, Michael I. Cohen, Helen McNamara, Fredric Daum

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Infants undergoing phototherapy may develop loose stools. Acquired lactase deficiency secondary to this treatment modality was suggested as a cause for the diarrhea. The effects of light energy directly on intestinal enzymes and indirectly through bilirubin photooxidation products were studied. Adult homozygote and heterozygote Gunn rats were treated with light for varying periods while littermate controls were kept in the dark. Intestinal lactase, sucrase and GGTP activities and serum bilirubin concentrations were determined. Jaundiced and non-jaundiced 1-week-old suckling Gunn rats were treated with light for 96 h, and intestinal lactase activity determined. No decreases in lactase, sucrase or GGTP activities were observed suggesting the reported diarrheal states following phototherapy are not related to light energy or photooxidation products.

Original languageEnglish (US)
Pages (from-to)179-184
Number of pages6
JournalNeonatology
Volume38
Issue number3-4
DOIs
StatePublished - Jan 1 1980

Keywords

  • Bilirubin
  • Diarrhea
  • GGTP
  • Gunn rat
  • Lactase
  • Phototherapy
  • Sucrase

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Developmental Biology

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