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We have recently reported that experimental periodontitis (EP) reduced methacholine-induced submandibular gland (SMG) salivary secretion. The aim of the present study was to determine whether histamine could prevent SMG impairment produced by EP. Bilateral EP was induced for 2 weeks and histamine treatment (0.1 mg/kg subcutaneously) was started 5 days before the end of the experimental period in male rats. The histamine effects on periodontitis-altered functional and histological parameters of SMG and on periodontal bone loss were evaluated. Histamine treatment partially reversed the methacholine-induced salivation reduction produced by EP while preventing SMG histological damage. Histamine's effect on SMG was associated with an increased proliferation rate (2.2 ± 0.3 vs. 0.2 ± 0.2 proliferative cells per field, P < 0.001). Furthermore, histamine completely prevented enhanced EP-induced apoptosis (1.0 ± 0.4 vs. 60.9 ± 4.6 apoptotic cells per field, P < 0.001). The protective effect exerted by histamine on SMG functionality is associated with attenuation of lingual and vestibular bone loss (0.66 ± 0.04 vs. 0.97 ± 0.06 mm; P < 0.001). Histamine is able to reduce periodontitis-induced damage to SMG and bone structure.

Citation

Juan P Prestifilippo, Eliana Carabajal, Máximo Croci, Javier Fernández-Solari, Elena S Rivera, Juan C Elverdin, Vanina A Medina. Histamine modulates salivary secretion and diminishes the progression of periodontal disease in rat experimental periodontitis. Inflammation research : official journal of the European Histamine Research Society ... [et al.]. 2012 May;61(5):455-64

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PMID: 22261710

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