alexa Suppression of Streptococcus mutans and Candida albicans by Probiotics:an In vitro Study
ISSN: 2161-1122

Dentistry
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Research Article

Suppression of Streptococcus mutans and Candida albicans by Probiotics:an In vitro Study

Shyamali Saha1,2, Catherine Tomaro-Duchesneau1, Meenakshi Malhotra1, Maryam Tabrizian1,2 and Satya Prakash1*

1Departments of Biomedical Engineering, Biomedical Technology and Cell Therapy Research Laboratory, Physiology, and Artificial Cells and Organs Research Center, Faculty of Medicine, McGill University, 3775 University Street, Montreal, Quebec, H3A 2B4, Canada

2Faculty of Dentistry, McGill University, Montreal, Quebec, H3A 2B2, Canada

*Corresponding Author:
Satya Prakash
Departments of Biomedical Engineering
Biomedical Technology and Cell Therapy Research Laboratory
Physiology, and Artificial Cells and Organs Research Center Faculty of Medicine
McGill University, 3775 University Street
Montreal, Quebec, H3A 2B4, Canada
Tel: 1514-398-3676
Fax: 1514-398-7461
E-mail: [email protected]

Received date : July 25, 2012; Accepted date : August 21, 2012; Published date : August 23, 2012

Citation: Saha S, Tomaro-Duchesneau C, Malhotra M, Tabrizian M, Prakash S (2012) Suppression of Streptococcus mutans and Candida albicans by Probiotics: an In vitro Study. Dentistry 2:141. doi:10.4172/2161-1122.1000141

Copyright: © 2012 Saha S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Abstract

Oral infections caused by microorganisms have led to increased risk of oral health problems such as Dental Caries (DC), periodontitis and Oral Candidiasis (OC). Streptococcus mutans and Candida albicans are the primary organisms responsible for DC and OC, respectively. The goal of the presented study was to investigate the potential of probiotics to prevent and treat DC and OC. An in vitro assay was developed to investigate several probiotic strains for their ability to inhibit the aforementioned oral pathogens. Probiotic by-products present in probiotic supernatant and live probiotic cells were both investigated for their ability to inhibit the growth of S. mutans and C. albicans. The probiotic strains investigated were L. reuteri NCIMB 701359, L. reuteri NCIMB 701089, L. reuteri NCIMB 11951, L. reuteri NCIMB 702656, L. reuteri NCIMB 702655, L. fermentum NCIMB 5221, L. fermentum NCIMB 2797, L. fermentum NCIMB 8829, L. acidophilus ATCC 314, L. plantarum ATCC 14917 and L. rhamnosus ATCC 5310.The presented research demonstrates that live probiotic cells are needed to inhibit oral pathogens, as cell-free supernatant could not inhibit the pathogens. Further experiments were performed to investigate and optimize the dose-dependent inhibition of the pathogens by live probiotic cells. As desired, an increased inhibition was observed with an increase in dose, as demonstrated by the increasing size of the zones of clearance. In addition, the observed inhibition was dependent on the strain of the probiotic used. This research implies that probiotic bacteria are capable of inhibiting the selected oral pathogens, S. mutans and C. albicans, holding promise for the future development of a probiotic therapeutic to treat and prevent oral/dental diseases. Furthermore, the research proposes further investigations into the probiotic mechanism(s) of action and efficacy for the development of an optimal therapy.

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