Site-specific profiling of the dental mycobiome reveals strong taxonomic shifts during progression of early childhood caries.

Site-specific profiling of the dental mycobiome reveals strong taxonomic shifts during progression of early childhood caries. Appl Environ Microbiol. 2020 Jan 17;: Authors: O'Connell LM, Santos R, Springer G, Burne RA, Nascimento MM, Richards VP Abstract Dental caries is one of the most common diseases worldwide. Bacteria and fungi are both commensals in the oral cavity; however, most research regarding caries has focused on bacterial impacts. The oral fungal mycobiome associated with caries is not well characterized and its role in disease is unclear. ITS1 amplicon sequencing was used to generate taxonomic profiles from site-specific supragingival plaque samples (n=82) obtained from 33 children with different caries status. Children were either caries-free (CF), caries-active with enamel lesions (CAE), or caries-active with dentin lesions (CA). Plaque samples were collected from caries-free surfaces (PF), and from enamel (PE) and dentin (PD) lesions. Taxonomic profiles representing the different categorizations (CF-PF, CAE-PF, CAE-PE, CA-PF, CA-PE and CA-PD) were utilized to characterize the mycobiome and its change through disease progression. A total of 139 fungal species were identified. Candida albicans was the most abundant species followed by Candida dubliniensis We found that severely progressed plaque communities (CA-PD) were significantly different from healthy plaque communities (CF-PF). A total of 32 taxa were differentially abundant across t...
Source: Applied and Environmental Microbiology - Category: Microbiology Authors: Tags: Appl Environ Microbiol Source Type: research

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Authors: Negrini TC, Koo H, Arthur RA Abstract Oral cavity harbors a complex and highly diverse microbial community. Cross-kingdom interactions between Candida and oral bacteria are critical for their co-existence, which may also affect the course and the severity of biofilm-mediated bacterial-mediated diseases. C. albicans has been found in polymicrobial biofilms associated with denture stomatitis, oral mucositis, dental caries, periodontal diseases, peri-implantitis, and root canal infection. Thus, it is of utmost importance to unravel the mechanisms of Candida-bacterial interactions and their impact on the onset...
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research
Dental caries is a biofilm-diet-dependent worldwide public health problem, and approaches against microorganisms in cariogenic biofilms are necessary.
Source: BMC Complementary and Alternative Medicine - Category: Complementary Medicine Authors: Tags: Research article Source Type: research
CONCLUSIONS: DMFT, DMFS, Plaque and oral hygiene indices and S.mutans values were found significantly different in β-TM patients than healthy, control group patients, in this study. PMID: 31655829 [PubMed - as supplied by publisher]
Source: Medicina Oral, Patologia Oral y Cirugia Bucal - Category: ENT & OMF Tags: Med Oral Patol Oral Cir Bucal Source Type: research
Dental caries and periodontitis are the most common oral disease of all age groups, affecting billions of people worldwide. These oral diseases are mostly associated with microbial biofilms in the oral cavity. Streptococcus gordonii, an early tooth colonizing bacterium and Candida albicans, an opportunistic pathogenic fungus, are the two abundant oral microbes that form mixed biofilms with augmented virulence, affecting oral health negatively. Understanding the molecular mechanisms of the pathogen interactions and identifying non-toxic compounds that block the growth of biofilms are important steps in the development of ef...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Candida albicans, a major opportunistic fungal pathogen, is frequently found together with Streptococcus mutans in dental biofilms associated with severe childhood caries (tooth decay), a prevalent pediatric oral disease. However, the impact of this cross-kingdom relationship on C. albicans remains largely uncharacterized. Here, we employed a novel quantitative proteomics approach in conjunction with transcriptomic profiling to unravel molecular pathways of C. albicans when cocultured with S. mutans in mixed biofilms. RNA sequencing and iTRAQ (isobaric tags for relative and absolute quantitation)-based quantitative proteom...
Source: Infection and Immunity - Category: Infectious Diseases Authors: Tags: Host-Associated Microbial Communities Source Type: research
Conclusions: The present data suggest that C. albicans has low enamel demineralization potential and the presence of C. albicans can reduce both the cariogenic and acidogenic potentials of S. mutans biofilms.
Source: Journal of Applied Oral Science - Category: Dentistry Source Type: research
Chitosan nanoparticle (nanochitosan) has a broad antimicrobial spectrum against diverse pathogenic microorganisms. However, its effect on dental caries-associated microorganisms, such as Streptococcus mutans and
Source: BMC Research Notes - Category: Research Authors: Tags: Research note Source Type: research
Jewel Ann Joseph1,2,3, Simen Akkermans1,2,3, Philippe Nimmegeers1,2,3 and Jan F. M. Van Impe1,2,3* 1BioTeC+, Chemical and Biochemical Process Technology and Control, Department of Chemical Engineering, KU Leuven, Leuven, Belgium 2Optimization in Engineering Center-of-Excellence, KU Leuven, Leuven, Belgium 3CPMF2, Flemish Cluster Predictive Microbiology in Foods, Leuven, Belgium There is currently a worldwide trend to reduce sugar consumption. This trend is mostly met by the use of artificial non-nutritive sweeteners. However, these sweeteners have also been proven to have adverse health effects such as dizzines...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Conclusion: HD presented a more adverse impact on oral health than PD, particularly periodontal disease and oral Candida colonization; however, this impact on oral health appears to be reduced or ameliorated when patients change from HD to PD therapy.
Source: Quintessence International - Category: Dentistry Source Type: research
Authors: Fechney JM, Browne GV, Prabhu N, Irinyi L, Meyer W, Hughes T, Bockmann M, Townsend G, Salehi H, Adler CJ Abstract Children's oral health is in a dire state, with dental decay (caries) being one of the most common chronic diseases. While the role of bacteria in the oral microbiome and dental caries is established, the contribution of fungi is relatively unknown. We assessed the oral mycobiome in childhood (n = 17), to determine if the composition of fungi varies between children with and without caries. Oral mycobiome composition was assessed by using Illumina MiSeq to sequence the ITS2 region, which was am...
Source: Journal of Oral Microbiology - Category: Microbiology Tags: J Oral Microbiol Source Type: research
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