Abstract Title:

Soluble beta-1,3/1,6-glucan from yeast inhibits experimental periodontal disease in Wistar rats.

Abstract Source:

J Clin Periodontol. 2005 Apr;32(4):347-52. PMID: 15811050

Abstract Author(s):

Torbjørn Breivik, Per Kristian Opstad, Rolf Engstad, Glenn Gundersen, Per Gjermo, Hans Preus

Article Affiliation:

Department of Periodontology, Faculty of Dentistry, University of Oslo, Oslo, Norway. [email protected]


OBJECTIVE: We have investigated whether a purified immunomodulatory water soluble beta-1,3/1,6-glucan isolated from the cell wall of Bakers yeast, Saccharomyces cerevisiae, would influence the progression of ligature-induced periodontal disease, and to modulate accompanying cytokine and hypothalamic-pituitary-adrenal (HPA) axis responses to a lipopolysaccharide (LPS) challenge. MATERIAL AND METHODS: beta-1,3/1,6-glucan (10 mg/kg/day) was given in the drinking water to Wistar rats during the entire experiment, starting 14 days before disease induction, while control rats were given tap water only. Periodontal disease was assessed when the ligatures had been in place for 35 days. RESULTS: Orally administered soluble beta-1,3/1,6-glucan significantly reduced periodontal bone loss as measured on digital X-rays (p=0,026). Glucan-treated rats also showed a significantly enhanced plasma level of the HPA axis-driven hormone corticosterone (p=0.047), and of the cytokine transforming growth factor-1beta (p=0.032), as well as a tendency to enhanced IL-10 (p=0.106), induced by intra-peritoneally administered LPS. CONCLUSION: Soluble beta-1,3/1,6-glucan administered by the oral route diminishes ligature-induced periodontal bone loss in this model. This effect may be attributable to the well documented ability of beta-1,3/1,6-glucan to stimulate macrophage phagocytosis and to skew the T helper (Th)1/Th2 balance towards Th1 and T regulatory responses. The HPA axis may play a significant role in beta-1,3/1,6-glucan induced immune modulation.

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