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Nutritional Immunology

Goat Milk Oligosaccharides Are Anti-Inflammatory in Rats with Hapten-Induced Colitis¹

Abdelali Daddaoua^*, Victor Puerta^*, Pilar Requena^*, Antonio Martínez-Férez, Emilia Guadix, Fermín Sánchez de Medina^**, Antonio Zarzuelo^**, María Dolores Suárez^*, Julio José Boza and Olga Martínez-Augustin²

^* Departments of Biochemistry and Molecular Biology II, ^** Pharmacology and Chemical Engineering, University of Granada, Spain and Puleva Biotech S.A., Granada, Spain

² To whom correspondence should be addressed. E-mail: omartine{at}ugr.es.

Oligosaccharides are included among the anti-inflammatory components of milk because of their prebiotic properties and their capacity to act as receptors of microorganisms. Here the intestinal anti-inflammatory effect of goat milk oligosaccharides (O) was assessed in trinitrobenzenesulfonic (T) acid-induced colitis in rats. Rats were randomly assigned to three different groups. Two groups (T and OS) of colitic rats and a control group (C) were studied. Group OS received 500 mg/(kg·d) of goat milk oligosaccharides orally, starting 2 d before the colitis induction until d 6, and groups T and C received the vehicle. When compared with the T group, the OS group showed decreased anorexia and body weight loss; reduced bowel wall thickening and longitudinal extension of necrotic lesions; downregulated colonic expression of interleukin 1ß, inducible nitric oxide synthase, cyclooxygenase 2, and mucin 3; and increased trefoil factor 3. Thus, goat milk oligosaccharides have anti-inflammatory effects in rats with experimental colitis and may be useful in the management of inflammatory bowel disease.

KEY WORDS: • colon • goat milk • inflammatory bowel disease • intestine • oligosaccharides

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