当前位置： SCI文献检索 > JOURNAL OF DENTAL RESEARCH期刊下所有文献 > Resilience of the Oral Microbiota in Health: Mechanisms That Prevent Dysbiosis.

Resilience of the Oral Microbiota in Health: Mechanisms That Prevent Dysbiosis.

Abstract：

:Dental diseases are now viewed as a consequence of a deleterious shift in the balance of the normally stable resident oral microbiome. It is known that frequent carbohydrate consumption or reduced saliva flow can lead to caries, and excessive plaque accumulation increases the risk of periodontal diseases. However, when these "disease drivers" are present, while some individuals appear to be susceptible, others are more tolerant or resilient to suffering from undesirable changes in their oral microbiome. Health-maintaining mechanisms that limit the effect of disease drivers include the complex set of metabolic and functional interrelationships that develop within dental biofilms and between biofilms and the host. In contrast, "positive feedback loops" can develop within these microbial communities that disrupt resilience and provoke a large and abrupt change in function and structure of the ecosystem (a microbial "regime shift"), which promotes dysbiosis and oral disease. For instance, acidification due to carbohydrate fermentation or inflammation in response to accumulated plaque select for a cariogenic or periopathogenic microbiota, respectively, in a chain of self-reinforcing events. Conversely, in tolerant individuals, health-maintaining mechanisms, including negative feedback to the drivers, can maintain resilience and promote resistance to and recovery from disease drivers. Recently studied health-maintaining mechanisms include ammonia production, limiting a drop in pH that can lead to caries, and denitrification, which could inhibit several stages of disease-associated positive feedback loops. Omics studies comparing the microbiome of, and its interaction with, susceptible and tolerant hosts can detect markers of resilience. The neutralization or inhibition of disease drivers, together with the identification and promotion of health-promoting species and functions, for example, by pre- and probiotics, could enhance microbiome resilience and lead to new strategies to prevent disease.

journal_name

J Dent Res

journal_title

Journal of dental research

authors

Rosier BT,Marsh PD,Mira A

doi

10.1177/0022034517742139

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

371-380

issue

eissn

0022-0345

issn

1544-0591

journal_volume

pub_type

杂志文章,评审

在线工具

Resilience of the Oral Microbiota in Health: Mechanisms That Prevent Dysbiosis.