Affiliation:
1. College of Medicine and Public Health and Flinders Centre for Innovation in Cancer, Flinders University, Bedford Park, South Australia, Australia
2. School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia, Australia
3. Centre for Paediatric and Adolescent Gastroenterology, Children, Youth, and Women's Health Service, North Adelaide, South Australia, Australia
Abstract
ABSTRACT
Background
Prebiotics selectively stimulate the growth of beneficial bacteria within the gastrointestinal tract, and have been investigated in human and animal studies for their capacity to improve intestinal health.
Objective
We investigated the prebiotics fructo-oligosaccharide (FOS), galacto-oligosaccharide (GOS), and mannan-oligosaccharide (MOS) for their potential to alleviate intestinal damage in rats.
Methods
Female Dark Agouti rats (6–8 wk old, 110–150 g) were allocated to 1 of the following treatment groups (n = 8/group): saline/water, saline/FOS, saline/GOS, saline/MOS, 5-fluorouracil (5FU)/water, 5FU/FOS, 5FU/GOS, and 5FU/MOS. Rats were pretreated with either 5% GOS, MOS, or FOS or vehicle (water) from day −12 to day 0. On day 0, rats received a single intraperitoneal injection of saline or 5FU. Metabolic data were recorded daily and all rats were killed on day 3. Histopathology was quantified in hematoxylin and eosin–stained sections. Intestinal sucrase and myeloperoxidase activity were quantified by biochemical assay. Fecal SCFAs—acetic, propionic, and butyric acid—were also measured. Statistical analysis was by repeated-measures, 2-factor ANOVA or Kruskal–Wallis and Mann–Whitney U test; P < 0.05 was considered statistically significant.
Results
Body weight was significantly decreased in all treatment groups after 5FU injection, with no change in body weight observed in any prebiotic treatment group. Total food intake was lower by ≥7% in the GOS treatment group pre-5FU than in all other groups (P < 0.05). Ileal villus height was 18% higher in GOS-treated rats pre-5FU than in respective water controls (P < 0.05). Jejunal and ileal villus height and crypt depth were significantly decreased in all treatment groups after 5FU injection, with no prebiotic effect observed. SCFAs were differentially increased in prebiotic treatment groups compared with water-only controls (P < 0.05).
Conclusions
FOS, GOS, and MOS have differential effects in modifying small intestinal pathology and SCFA profiles in rats with healthy and damaged small intestinal mucosa.
Publisher
Oxford University Press (OUP)
Subject
Nutrition and Dietetics,Medicine (miscellaneous)
Cited by
19 articles.
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