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1.
Int J Mol Sci ; 11(4): 1458-1470, 2010 Apr 02.
Artículo en Inglés | MEDLINE | ID: mdl-20480030

RESUMEN

The objective of this study was to evaluate the effect of titanium immobilized with a cationic antimicrobial peptide (JH8194) derived from histatin on the biofilm formation of Porphyromonas gingivalis and differentiation of osteoblastic cells (MC3T3-E1). The titanium specimens (Ti) were immobilized with JH8194, according to the method previously described. The colonization of P. gingivalis on JH8194-Ti was significantly lower than that on control- and blocking-Ti. JH8194-Ti enhanced the mRNA expressions of Runx2 and OPN, and ALPase activity in the MC3T3-E1, as compared with those of control- and blocking-Ti. These results, taken together, suggested the possibility that JH8194-Ti may be a potential aid to shorten the period of acquiring osseointegration.


Asunto(s)
Péptidos Catiónicos Antimicrobianos/farmacología , Diferenciación Celular/efectos de los fármacos , Histatinas/química , Titanio/química , Fosfatasa Alcalina/genética , Fosfatasa Alcalina/metabolismo , Animales , Péptidos Catiónicos Antimicrobianos/química , Biopelículas/efectos de los fármacos , Línea Celular , Proliferación Celular/efectos de los fármacos , Subunidad alfa 1 del Factor de Unión al Sitio Principal/genética , Subunidad alfa 1 del Factor de Unión al Sitio Principal/metabolismo , Histatinas/metabolismo , Proteínas Inmovilizadas/química , Proteínas Inmovilizadas/farmacología , Ratones , Osteoblastos/efectos de los fármacos , Osteoblastos/metabolismo , Osteopontina/genética , Osteopontina/metabolismo , Porphyromonas gingivalis/fisiología , ARN Mensajero/metabolismo
2.
J Investig Clin Dent ; 2(3): 187-96, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-25426790

RESUMEN

AIM: The aim of this study was to find the oral isolate of lactobacilli, which has the potential to inhibit either periodontal, cariogenic, or fungal pathogens in vitro, and to examine the effects of bovine milk fermented with the isolate on the oral carriage of cariogenic and periodontal pathogens. METHODS: The inhibitory effects of the supernatant of Man-Rogosa-Sharpe broth, in which each of 42 oral isolates of lactobacilli grown, was examined. One isolate, Lactobacillus rhamnosus L8020, that showed the potential to inhibit either periodontal, cariogenic, or fungal pathogens in vitro, was used to examine the effects of fermented milk on the oral carriage of cariogenic and periodontal pathogens, which was examined by a placebo-controlled and cohort trial using 50 participants. RESULTS: Edible yogurt containing Lactobacillus rhamnosus L8020 significantly reduced the oral carriage of mutans streptococci (P < 0.01) and four periodontal pathogens examined: Porphyromonas gingivalis, Prevotella intermedia, Tannerella forsythia, and Fusobacterium spp. (P < 0.01), but the phenomenon were not observed with the placebo yogurt (P > 0.05). CONCLUSION: These results suggest that yogurt with Lactobacillus rhamnosus L8020 could reduce the risk of dental caries and periodontal disease.


Asunto(s)
Antibiosis/fisiología , Bacterias Gramnegativas/fisiología , Lacticaseibacillus rhamnosus/metabolismo , Boca/microbiología , Streptococcus mutans/fisiología , Yogur/microbiología , Animales , Carga Bacteriana , Técnicas Bacteriológicas , Bacteroides/fisiología , Candida albicans/fisiología , Bovinos , Estudios de Cohortes , Método Doble Ciego , Femenino , Fusobacterium/fisiología , Humanos , Lacticaseibacillus rhamnosus/fisiología , Masculino , Placebos , Porphyromonas gingivalis/fisiología , Prevotella intermedia/fisiología , Saliva/microbiología , Streptococcus sobrinus/fisiología , Adulto Joven
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