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Milk Casein-Based Diet Containing TGF-β Controls the Inflammatory Reaction in the HLA-B27 Transgenic Rat Model![]() ![]() ![]()
From the * Nestlé Research Center, Nestec
Ltd., Lausanne, Switzerland; and the Correspondence: Eduardo J Schiffrin, Nestlé Nutrition, Ave Nestlé 15, 1800 Vevey, Switzerland. Electronic mail may be sent to eduardo.schiffrin{at}rdls.nestle.com.
Background: A casein-based formula containing TGF-β has been
successfully used in adolescents during acute episodes of Crohn's disease. The
role played by this molecule requires confirmation. We have examined the
capacity of a TGF-β containing diet to control the intestinal
inflammation in HLA-B27 transgenic rats, and compared its effects with a
similar diet devoid of TGF-β. Methods: Three groups of rats were
studied. HLA-B27/hβ2M transgenic rats were fed with a casein-based
rat-adapted diet containing TGF-β or a control casein-based diet without
TGF-β. Fischer control animals were fed the latter. Body weight, dietary
intake, tissue weights, fecal samples, leukocyte counts, and acute phase
response were analyzed. Intestinal inflammation was assessed by histology,
myeloperoxidase, and mRNA expression of cytokines. MUC2 protein expression was
assessed by immunohistochemistry. Breakdown of muscle protein was examined.
Results: The test diet improved diarrhea increasing the fecal dry
matter and the colonic inflammation as shown by a lower inflammatory score
(2.43 ± 1.13 vs 4.42 ± 0.53, p < .05),
lower mucosal thickness (431.25 ± 72.29 vs 508.57 ±
81.32 µm, p = .08) and decreased IFN
Discussion
Journal of Parenteral and Enteral Nutrition, Vol. 29, No. 4 suppl,
S141-S150 (2005) This article has been cited by other articles:
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mRNA expression. MUC2
protein expression was increased in HLA rats fed the TGF-β diet compared
with HLA rats fed the control diet, but restitution to normal pattern was not
observed. The test diet also decreased leukocytosis and the acute phase
response and improved the muscle catabolic response. Conclusion: The
TGF-β containing diet has a beneficial effect in an animal model of
intestinal inflammation. Our observations support a potential role for dietary
TGF-β in the restoration of immune homeostasis. 
