Relevant bibliographies by topics / Oral ecology

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Oral ecology'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Oral ecology"

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Miller, Julie Ann. "Oral Ecology." Science News 129, no. 25 (June 21, 1986): 396. http://dx.doi.org/10.2307/3970604.

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Joxerra Garzia. "Basque Oral Ecology." Oral Tradition 22, no. 2 (2008): 47–64. http://dx.doi.org/10.1353/ort.0.0003.

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van Winkelhoff, A. J., T. J. M. van Steenbergen, and J. de Graaff. "Ecology of the oral cavity." Antonie van Leeuwenhoek 51, no. 5-6 (September 1985): 599. http://dx.doi.org/10.1007/bf00404585.

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Skovgaard, Niels. "Oral Bacterial Ecology. The Molecular Basis." International Journal of Food Microbiology 61, no. 2-3 (November 2000): 213–14. http://dx.doi.org/10.1016/s0168-1605(00)00392-5.

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Scannapieco, Frank A. "Saliva-Bacterium Interactions in Oral Microbial Ecology." Critical Reviews in Oral Biology & Medicine 5, no. 3 (September 1994): 203–48. http://dx.doi.org/10.1177/10454411940050030201.

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Saliva is thought to have a significant impact on the colonization of microorganisms in the oral cavity. Salivary components may participate in this process by one of four general mechanisms: binding to microorganisms to facilitate their clearance from the oral cavity, serving as receptors in oral pellicles for microbial adhesion to host surfaces, inhibiting microbial growth or mediating microbial killing, and serving as microbial nutritional substrates. This article reviews information pertinent to the molecular interaction of salivary components with bacteria (primarily the oral streptococci and Actinomyces) and explores the implications of these interactions for oral bacterial colonization and dental plaque formation. Knowledge of the molecular mechanisms controlling bacterial colonization of the oral cavity may suggest methods to prevent not only dental plaque formation but also serious medical infections that may follow microbial colonization of the oral cavity.
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Filoche, S., L. Wong, and C. H. Sissons. "Oral Biofilms: Emerging Concepts in Microbial Ecology." Journal of Dental Research 89, no. 1 (November 16, 2009): 8–18. http://dx.doi.org/10.1177/0022034509351812.

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Oral biofilms develop under a range of different conditions and different environments. This review will discuss emerging concepts in microbial ecology and how they relate to oral biofilm development and the treatment of oral diseases. Clues to how oral biofilms develop may lie in other complex systems, such as interactions between host and gut microbiota, and even in factors that affect biofilm development on leaf surfaces. Most of the conditions under which oral biofilms develop are tightly linked to the overall health and biology of the host. Advances in molecular techniques have led to a greater appreciation of the diversity of human microbiota, the extent of interactions with the human host, and how that relates to inter-individual variation. As a consequence, plaque development may no longer be thought of as a generic process, but rather as a highly individualized process, which has ramifications for the treatment of the diseases it causes.
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Дружинець, М. Л. "UKRAINIAN ORAL SPEECH ECOLOGY: PRONUNCIATION OF CONSONANTS." Opera in linguistica ukrainiana, no. 27 (June 26, 2020): 3–13. http://dx.doi.org/10.18524/2414-0627.2020.27.206463.

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Baker, Jonathon L., Batbileg Bor, Melissa Agnello, Wenyuan Shi, and Xuesong He. "Ecology of the Oral Microbiome: Beyond Bacteria." Trends in Microbiology 25, no. 5 (May 2017): 362–74. http://dx.doi.org/10.1016/j.tim.2016.12.012.

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Eriksen, Harald M., and Vladimir Dimitrov. "Ecology of oral health: a complexity perspective." European Journal of Oral Sciences 111, no. 4 (July 23, 2003): 285–90. http://dx.doi.org/10.1034/j.1600-0722.2003.00053.x.

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Marcotte, Harold, and Marc C. Lavoie. "Oral Microbial Ecology and the Role of Salivary Immunoglobulin A." Microbiology and Molecular Biology Reviews 62, no. 1 (March 1, 1998): 71–109. http://dx.doi.org/10.1128/mmbr.62.1.71-109.1998.

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SUMMARY In the oral cavity, indigenous bacteria are often associated with two major oral diseases, caries and periodontal diseases. These diseases seem to appear following an inbalance in the oral resident microbiota, leading to the emergence of potentially pathogenic bacteria. To define the process involved in caries and periodontal diseases, it is necessary to understand the ecology of the oral cavity and to identify the factors responsible for the transition of the oral microbiota from a commensal to a pathogenic relationship with the host. The regulatory forces influencing the oral ecosystem can be divided into three major categories: host related, microbe related, and external factors. Among host factors, secretory immunoglobulin A (SIgA) constitutes the main specific immune defense mechanism in saliva and may play an important role in the homeostasis of the oral microbiota. Naturally occurring SIgA antibodies that are reactive against a variety of indigenous bacteria are detectable in saliva. These antibodies may control the oral microbiota by reducing the adherence of bacteria to the oral mucosa and teeth. It is thought that protection against bacterial etiologic agents of caries and periodontal diseases could be conferred by the induction of SIgA antibodies via the stimulation of the mucosal immune system. However, elucidation of the role of the SIgA immune system in controlling the oral indigenous microbiota is a prerequisite for the development of effective vaccines against these diseases. The role of SIgA antibodies in the acquisition and the regulation of the indigenous microbiota is still controversial. Our review discusses the importance of SIgA among the multiple factors that control the oral microbiota. It describes the oral ecosystems, the principal factors that may control the oral microbiota, a basic knowledge of the secretory immune system, the biological functions of SIgA, and, finally, experiments related to the role of SIgA in oral microbial ecology.
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Dissertations / Theses on the topic "Oral ecology"

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Phattarataratip, Ekarat. "The role of salivary antimicrobial peptides in shaping Streptococcus mutans ecology." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/724.

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Antimicrobial peptides are among the repertoire of host innate immune defenses. In mucosal immunity, the health-disease balance can be greatly modulated by the interplay between host immune factors and colonized microflora. Microbial ecology within dental plaque is constantly shaped by environmental factors present within the oral cavity. Several antimicrobial peptides are detected in saliva and their bactericidal activities against oral bacteria, including Streptococcus mutans, the primary etiologic agent of dental caries, have been clearly demonstrated. However, the role of these antimicrobial peptides in S .mutans ecology and host caries experience is not well-defined. We hypothesized that various strains of S. mutans possess different inherent susceptibility/resistance profiles to host salivary antimicrobial peptides and that host-specific quantities of these peptides may influence plaque colonization by particular S. mutans strains. S. mutans strains from subjects with variable caries experience were tested for susceptibility to a panel of antimicrobial peptides, including HNP-1-3, HBD-2-3 and LL-37, revealing that the susceptibilities of S. mutans to these peptides were strain-specific. S. mutans strains from high caries subjects showed greater resistance to these peptides at varying concentrations than those from caries-free subjects. In addition, when combinations of these peptides were tested, they showed either additive or synergistic interaction against S. mutans. Determinations of the salivary levels of these peptides showed that their concentrations were highly variable among subjects with no correlation to host caries experience. However, positive relationships between the salivary concentrations of HNP-1-3 and MS in dental plaque were found. Additionally, the levels of a number of these peptides in saliva appeared to be positively correlated within an individual. An analysis of the salivary peptide concentrations and the susceptibility profiles of S. mutans strains showed that S. mutans strains obtained from subjects with higher concentration of HNP-1-3 in saliva appeared to be more resistant to HNP-1. Collectively, our findings showed that salivary antimicrobial peptides affect S. mutans ecology by restricting the overall growth of this bacterium within the oral cavity and that their activity may help select resistant strains of S. mutans to colonize within dental plaque. The relative ability of S. mutans to resist host salivary antimicrobial peptides may be considered a potential virulence factor for this species.
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Lif, Holgerson Pernilla. "Xylitol and its effect on oral ecology : clinical studies in children and adolescents." Doctoral thesis, Umeå : Univ, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-986.

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Halasa, Katrina Bassam. "The Oral Histories of Six African American Males in Their Ecology of Advanced Placement Biology." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1333936100.

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Engström, Kristina. "Fluoride concentration in plaque and saliva and its effects on oral ecology after intake of fluoridated milk." Doctoral thesis, Umeå universitet, Odontologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1542.

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According to WHO, the addition of fluoride to milk could be considered as an alternative to water fluoridation for community-based caries prevention in childhood. School-based schemes in developing as well as industrial countries have demonstrated substantial benefits on oral health, but there are limited data available on the local events in the oral cavity after consumption of fluoridated milk. The general aim of the present investigations was to investigate the concentration of fluoride obtained in saliva and dental plaque after ingestion of Fmilk and to explore the possible effects on the oral ecology. A series of controlled studies were performed in vivo in which samples of saliva and dental plaque were collected and analysed with respect to fluoride content, microbial composition and acidogenicity. An in vitro study evaluated the effect on enamel lesion formation. In paper I, significantly increased concentrations of fluoride (p<0.05) were disclosed in saliva 15 minutes after drinking the fluoride-containing water or milk. In the plaque samples however, the F-increase remained significantly elevated still after 2 hours. The availability of fluoride from milk was generally somewhat lower than from water but the differences were not statistically significant in either plaque or saliva. In paper II, the fluoride concentration in plaque was further explored after a single intake or habitual consumption of fluoridated milk together with a regular meal. The results showed that cariesinhibiting levels of fluoride persisted up to 4 hours after intake. There were no significant differences between the single intakes when compared with repeated intakes. In paper III, the influence of fluoridated milk on the salivary microorganisms associated with dental caries was evaluated. No significant alterations of the microflora were found compared with baseline. There was a slight reduction in the proportion of mutans streptococci after 2 and 4 weeks during consumption with fluoridated milk but the difference failed to reach statistical significance. In paper IV it was demonstrated that fluoridated milk significantly (p<0.05) could counteract the lactic acid formation in dental plaque as initiated with sucrose. In paper V, laser fluorescence technique was used to monitor the effect of fluoridated milk on enamel lesion formation in an experimental caries model. The results reinforced previous research and showed a hampering effect of fluoridated milk. No side effects were reported in any of the investigations. The findings of this thesis substantiate that milk is a suitable vehicle for fluoride administration and contribute to the understanding and possible explanations for the anti-caries properties of fluoridated milk. The main conclusions were: a) intake of fluoridated milk resulted in significantly elevated fluoride levels in saliva within the first 15 minutes and up to 4 hours in dental plaque when fluoridate milk was consumed together with meal, b) no significant alteration of the salivary microflora was disclosed after habitual intake of fluoridated milk but a delayed carbohydrate-mediated lactic acid formation in suspensions of dental plaque could be demonstrated, c) the fluoride concentrations in plaque were not negatively influence by the food intake, and d) the in vitro findings advocated that fluoride added to milk reduced enamel lesion formation as assessed by laser fluorescence technique in an experimental caries model.According to WHO, the addition of fluoride to milk could be considered as an alternative to water fluoridation for community-based caries prevention in childhood. School-based schemes in developing as well as industrial countries have demonstrated substantial benefits on oral health, but there are limited data available on the local events in the oral cavity after consumption of fluoridated milk. The general aim of the present investigations was to investigate the concentration of fluoride obtained in saliva and dental plaque after ingestion of Fmilk and to explore the possible effects on the oral ecology. A series of controlled studies were performed in vivo in which samples of saliva and dental plaque were collected and analysed with respect to fluoride content, microbial composition and acidogenicity. An in vitro study evaluated the effect on enamel lesion formation. In paper I, significantly increased concentrations of fluoride (p<0.05) were disclosed in saliva 15 minutes after drinking the fluoride-containing water or milk. In the plaque samples however, the F-increase remained significantly elevated still after 2 hours. The availability of fluoride from milk was generally somewhat lower than from water but the differences were not statistically significant in either plaque or saliva. In paper II, the fluoride concentration in plaque was further explored after a single intake or habitual consumption of fluoridated milk together with a regular meal. The results showed that cariesinhibiting levels of fluoride persisted up to 4 hours after intake. There were no significant differences between the single intakes when compared with repeated intakes. In paper III, the influence of fluoridated milk on the salivary microorganisms associated with dental caries was evaluated. No significant alterations of the microflora were found compared with baseline. There was a slight reduction in the proportion of mutans streptococci after 2 and 4 weeks during consumption with fluoridated milk but the difference failed to reach statistical significance. In paper IV it was demonstrated that fluoridated milk significantly (p<0.05) could counteract the lactic acid formation in dental plaque as initiated with sucrose. In paper V, laser fluorescence technique was used to monitor the effect of fluoridated milk on enamel lesion formation in an experimental caries model. The results reinforced previous research and showed a hampering effect of fluoridated milk. No side effects were reported in any of the investigations. The findings of this thesis substantiate that milk is a suitable vehicle for fluoride administration and contribute to the understanding and possible explanations for the anti-caries properties of fluoridated milk. The main conclusions were: a) intake of fluoridated milk resulted in significantly elevated fluoride levels in saliva within the first 15 minutes and up to 4 hours in dental plaque when fluoridate milk was consumed together with meal, b) no significant alteration of the salivary microflora was disclosed after habitual intake of fluoridated milk but a delayed carbohydrate-mediated lactic acid formation in suspensions of dental plaque could be demonstrated, c) the fluoride concentrations in plaque were not negatively influence by the food intake, and d) the in vitro findings advocated that fluoride added to milk reduced enamel lesion formation as assessed by laser fluorescence technique in an experimental caries model.
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5

Engström, Kristina. "Fluoride concentration in plaque and saliva and its effects on oral ecology after intake of fluoridated milk /." Umeå : Univ, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1542.

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Worcester, Cynthia E. "Phenotypic Plasticity of Oral Jaw Dentition in Archosargus Probatocephalus." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1215.

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Phenotypic plasticity, the capacity of a single genotype to exhibit variable phenotypes in different environments, is common in many species. A sample of wild caught Archosargus probatocephalus, also known as sheepshead, from Florida was randomly divided into two treatment groups: one group was fed soft prey, Mercenaria sp. muscle tissue, and the other group was fed hard prey, Mercenaria sp. in the shell, for 365 days. It was hypothesized that the sheepshead fed hard prey would have a thicker tooth enamel layer containing more calcium, and therefore be stronger than the tooth enamel layer of those fed soft prey items. Additionally, the mean functional jaw surface area, the percentage of tooth coverage of functional jaw surface, number of teeth per jaw, correlation between standard length and mean total tooth height, and the combined surface area of the teeth, when compared between the two treatments, should be greater in the hard prey treatment. The seventeen jaws of two prey groups were acquired postmortem and each jaw was divided into four quadrants. The largest tooth in each quadrant was removed from the jaw, longitudinally sectioned, and examined using scanning electron microscopy (SEM) to measure the enamel and dentin layers. Using the SEM backscatter electron detector the elemental composition of the different layers was determined at multiple locations. Finally, data was analyzed using analyses of variance (ANOVA’s) to compare mean tooth height, calcium content in enamel and dentin layers, mean functional jaw number of teeth per jaw, and upper to lower jaw overall enamel and dentin thickness between each treatment. Phenotypic plasticity was identified in three areas: percentage of jaw surface covered by teeth, a positive correlation between total tooth height and enamel height in hard prey treatment, and a positive correlation between total tooth height and soft prey treatment dentin height; but not in the other areas studied. It is apparent that phenotypic plasticity can increase an individual’s ability to survive in a variable food resource environment by changing some aspects of tooth morphology, but the ability to change in response to stimuli was not found in all areas of tooth structure. i
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Ganesan, Sukirth M. "Relative Contributions Of Tobacco Associated Factors And Diabetes To Shaping The Oral Microbiome." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1529572658170786.

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Sousa, Verônica Thiemi Tsutae de. "Biomecânica do comportamento alimentar de girinos de anfíbios anuros." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/7450.

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Individuals of the same species have morphological, physiological and behavioral characteristics that determine when and where they will exist and how they will interact with individuals of other species. The ecomorphological diversity of anuran tadpoles make them great study subjects, as the resources use patterns (ecology) and the phylogenetic relationships among species can be inferred from the phenotypic properties. The influence of contemporary factors on the structure of tadpoles communities has been intensively studied for decades, but the use patterns and partitioning of food resources, have not received the same attention from researchers. Little is known about the ecology and feeding behavior of tadpoles, including its biomechanics, the influence of abiotic factors on feeding behavior, as well as the behavioral plasticity exhibited by tadpoles in the exploitation of food resources. These issues were investigated during the PhD and the results of the work developed during the course of this period are presented in this Dissertation In the first chapter, we verified whether the carnivorous tadpole of Leptodactylus labyrinthicus would adjust their feeding kinematics to maximize food consumption when feeding on alternative food sources. Our results indicate that, depending on the food source to be explored, the tadpoles may exhibit different feeding behavior: to consume the food particles suspended in the water surface, the tadpoles exhibit the filter-feeding behavior; in contrast, to consume food particles that are attached to submerse surfaces, tadpoles use the scrape feeding behavior. Filtering and scraping feeding behaviors are quantitative and qualitatively distincts, i.e. these feeding behaviors kinematics and the shape of the oral disc during feeding show distinguishable features. In the second chapter, we tested the hypothesis that changes in the water mean temperature would have differential 15 effects on the feeding kinematics of tadpoles of two anuran species: Rhinella schneideri, whose tadpoles are benthic, and Trachycephalus typhonius, whose tadpoles are nektonic. Our results indicate that the temperature affects the kinematics of the scrape feeding behavior. However, the temperature effect on kinematics variables may depend on the species, so the changes are not in the same direction (i.e. temperature may have a positive effect on some kinematic variables but negative effects on others). Finally, in the third chapter, our aim was to verify whether the ecological and morphological influences on feeding behavior reflect the phylogenetic relationship among species.
Indivíduos de uma mesma espécie possuem características morfológicas, fisiológicas e comportamentais que determinam quando e onde eles poderão existir e como interagirão com indivíduos de outras espécies. A diversidade ecomorfológica de girinos de anfíbios anuros os tornam ótimos organismos de estudo, já que os padrões de uso de recursos (ecologia) e as relações filogenéticas entre as espécies podem ser inferidas a partir das propriedades fenotípicas. A influência de fatores contemporâneos sobre a estrutura das comunidades de girinos tem sido intensamente estudada há décadas, mas os padrões de uso e partilha de recursos alimentares não têm recebido a mesma atenção dos pesquisadores. Pouco se sabe sobre a ecologia e o comportamento alimentar dos girinos, incluindo a biomecânica do comportamento alimentar, a influência de fatores abióticos sobre o comportamento alimentar, além da plasticidade comportamental exibida pelos girinos na exploração dos recursos alimentares. Estas questões foram investigadas durante o Doutorado e os resultados do trabalho durante ao longo deste período são apresentados na presente tese, que compreende três capítulos. No primeiro, verificamos se o girino carnívoro de Leptodactylus labyrinthicus ajusta seu comportamento alimentar para maximizar o consumo de alimento obtido a partir de fontes alimentares alternativas. Os resultados indicam que, dependendo da fonte alimentar a ser explorada, os girinos podem adotar comportamentos alimentares distintos: para consumir alimentos disponíveis em suspensão na água, os girinos exibem o comportamento de filtração; já para consumir alimentos aderidos em superfícies submersas, os girinos utilizam o comportamento de raspagem. Tais comportamentos alimentares são discerníveis com relação às suas cinemáticas e aos formatos que o disco oral assume durante a alimentação por filtração e por raspagem. No segundo, testamos a 13 hipótese de que mudanças na temperatura média da água teriam efeitos diferenciais sobre o comportamento alimentar de girinos de duas espécies de anuros: Rhinella schneideri, que possui girinos bentônicos, e Trachycephalus typhonius, cujos girinos são nectônicos. Os resultados indicam que a temperatura afeta a cinemática do comportamento alimentar de raspagem. No entanto, devido à interação entre espécie e temperatura, o efeito da temperatura sobre as variáveis cinemáticas pode não produzir uma variação no mesmo sentido. Finalmente, no terceiro capítulo, nosso objetivo foi o de verificar se a influência dos fatores ecológicos e morfológicos sobre o comportamento alimentar dos girinos reflete as relações filogenéticas entre as espécies.
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Macarthur, Deborah Jane. "Mapping the proteome of Streptococcus gordonii." University of Sydney. Health Science, 2005. http://hdl.handle.net/2123/686.

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Streptococcus gordonii is a primary coloniser of the tooth surface where it efficiently ferments carbohydrates at pH levels above 6.0. By not being able to maintain the pH of dental plaque to a level required for enamel dissolution, the dominance of S. gordonii in dental plaque is considered a sign of a healthy oral cavity. However, upon entering the bloodstream and encountering a rise in pH, S. gordonii may become pathogenic, being one of the major causative organisms associated with infective endocarditis. Proteome analyses of S. gordonii grown at steady state in a chemostat allowed the phenotypic changes associated with alterations in pH levels characteristic of these two environments to be determined. As an initial starting point to this study, a two-dimensional electrophoresis (2- DE) reference map of S. gordonii grown at pH 7.0 was produced. Although only 50% of the S gordonii genome was available in an annotated form during the course of this study, the closely related Streptococcus pneumoniae genome (with which S. gordonii shares 97.24% DNA sequence homology) had been completed in 2001. The use of both of these databases allowed many of the S. gordonii proteins to be identified by mass spectrometry. Four hundred and seventy six protein spots, corresponding to 250 different proteins, or 12.5% of the S. gordonii proteome, were identified, giving rise to the first comprehensive proteome reference map of this oral bacterium. Of the 250 different proteins, 196 were of cellular origin while 68 were identified from the extracellular milieu. Only 14 proteins were common to both compartments. Of particular interest among the 54 uniquely identified extracellular proteins was a homologue of a peptidoglycan hydrolase that has been associated with virulence in S. pneumoniae. Among the other proteins identified were ones involved in transport and binding, energy metabolism, translation, transformation, stress response and virulence. Twelve cell envelope proteins were identified as well as 25 others that were predicted to have a membrane association based on the presence of at least one transmembrane domain. The study also confirmed the existence of 38 proteins previously designated as �hypothetical� or with no known function. Mass spectral data for over 1000 protein spots were accumulated and archived for future analysis when sequencing of the S. gordonii genome is finally completed. Following the mapping of the proteome of S. gordonii, alterations in protein spots associated with growth of the bacterium at pH intervals of 0.5 units in the pH range 5.5 - 7.5 were determined. Only 16 protein spots were shown to be significantly altered in their level of expression despite the range of pH studied. Among the differentially expressed proteins was a manganese-dependent inorganic pyrophosphatase (PpaC), which regulates expression of adhesins required for coaggregation. The expression of PpaC was highest at pH 6.5 - 7.0, the pH of a healthy oral cavity, indicating that PpaC may play an important part in dental plaque formation. Another differentially expressed protein was the heat-inducible transcription repressor (HrcA). Alterations in HrcA were consistent with its role as a negative repressor in regulating heat-shock proteins at low pH, even though no changes in the level of heat-shock proteins were observed as the pH declined. This result gave rise to the hypothesis that the possible reason cariogenic bacteria, such as Streptococcus mutans, can out compete S. gordonii at low pH might simply be due to their ability to manipulate their proteome in a complex manner for survival and persistence at low pH, unlike S. gordonii. This may imply some prevailing level of genetic regulation that is missing in S. gordonii.
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Macarthur, Deborah Jane. "Mapping The Proteome Of Streptococcus Gordonii." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/5097.

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Streptococcus gordonii is a primary coloniser of the tooth surface where it efficiently ferments carbohydrates at pH levels above 6.0. By not being able to maintain the pH of dental plaque to a level required for enamel dissolution, the dominance of S. gordonii in dental plaque is considered a sign of a healthy oral cavity. However, upon entering the bloodstream and encountering a rise in pH, S. gordonii may become pathogenic, being one of the major causative organisms associated with infective endocarditis. Proteome analyses of S. gordonii grown at steady state in a chemostat allowed the phenotypic changes associated with alterations in pH levels characteristic of these two environments to be determined. As an initial starting point to this study, a two-dimensional electrophoresis (2- DE) reference map of S. gordonii grown at pH 7.0 was produced. Although only 50% of the S gordonii genome was available in an annotated form during the course of this study, the closely related Streptococcus pneumoniae genome (with which S. gordonii shares 97.24% DNA sequence homology) had been completed in 2001. The use of both of these databases allowed many of the S. gordonii proteins to be identified by mass spectrometry. Four hundred and seventy six protein spots, corresponding to 250 different proteins, or 12.5% of the S. gordonii proteome, were identified, giving rise to the first comprehensive proteome reference map of this oral bacterium. Of the 250 different proteins, 196 were of cellular origin while 68 were identified from the extracellular milieu. Only 14 proteins were common to both compartments. Of particular interest among the 54 uniquely identified extracellular proteins was a homologue of a peptidoglycan hydrolase that has been associated with virulence in S. pneumoniae. Among the other proteins identified were ones involved in transport and binding, energy metabolism, translation, transformation, stress response and virulence. Twelve cell envelope proteins were identified as well as 25 others that were predicted to have a membrane association based on the presence of at least one transmembrane domain. The study also confirmed the existence of 38 proteins previously designated as �hypothetical� or with no known function. Mass spectral data for over 1000 protein spots were accumulated and archived for future analysis when sequencing of the S. gordonii genome is finally completed. Following the mapping of the proteome of S. gordonii, alterations in protein spots associated with growth of the bacterium at pH intervals of 0.5 units in the pH range 5.5 - 7.5 were determined. Only 16 protein spots were shown to be significantly altered in their level of expression despite the range of pH studied. Among the differentially expressed proteins was a manganese-dependent inorganic pyrophosphatase (PpaC), which regulates expression of adhesins required for coaggregation. The expression of PpaC was highest at pH 6.5 - 7.0, the pH of a healthy oral cavity, indicating that PpaC may play an important part in dental plaque formation. Another differentially expressed protein was the heat-inducible transcription repressor (HrcA). Alterations in HrcA were consistent with its role as a negative repressor in regulating heat-shock proteins at low pH, even though no changes in the level of heat-shock proteins were observed as the pH declined. This result gave rise to the hypothesis that the possible reason cariogenic bacteria, such as Streptococcus mutans, can out compete S. gordonii at low pH might simply be due to their ability to manipulate their proteome in a complex manner for survival and persistence at low pH, unlike S. gordonii. This may imply some prevailing level of genetic regulation that is missing in S. gordonii.
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Books on the topic "Oral ecology"

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Jakubovics, Nicholas S., and Palmer Robert J. Oral microbial ecology: Current research and new perspectives. Norfolk, UK: Caister Academic Press, 2013.

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Sanders, Angela. Oral histories documenting changes in wheatbelt wetlands. Como, W.A: Dept. of Conservation and Land Management, 1991.

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Herero ecology: The literary impact. Warszawa: Dialog, 2000.

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Hughes, Donald J. North American Indian ecology. 2nd ed. El Paso, Texas: Texas Western Press, 1996.

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Davies, Wendy. Oral testimonies from Shimshal, the Karakoam, Pakistan. London: Panos London's Oral Testimony Programme, 2004.

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Wendy, Davies. Oral testimonies from the Sierra Norte, Oaxaca, Mexico. Edited by Panos Institute. London: Panos London's Oral Testimony Programme, 2004.

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Angela, Creese, Martin Peter W, and Hornberger Nancy H, eds. Ecology of language. New York: Springer, 2008.

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Tittensor, Ruth. From peat bog to conifer forest: An oral history of Whitelee, its community and landscape. West Sussex, UK: Packard Pub., 2009.

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From peat bog to conifer forest: An oral history of Whitelee, its community and landscape. West Sussex, UK: Packard Pub., 2009.

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McLeod, Maria. Washington State Department of Ecology historically speaking: An oral history in celebration of the first 35 years, 1970-2005. Olympia, WA: Washington State Dept. of Ecology, 2005.

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Book chapters on the topic "Oral ecology"

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Giblett, Rod. "Pastoralism and oral sadism." In Psychoanalytic Ecology, 75–94. Abingdon, Oxon ; New York, NY : Routledge, 2019. | Series: Routledge focus on environment and sustainability: Routledge, 2019. http://dx.doi.org/10.4324/9780429059797-6.

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Xue, Jing, and Xiaorong Xiao. "Ecology of Oral Infectious Diseases." In Advanced Topics in Science and Technology in China, 227–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43883-1_10.

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Kolenbrander, Paul E., and Jack London. "Ecological Significance of Coaggregation among Oral Bacteria." In Advances in Microbial Ecology, 183–217. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4684-7609-5_4.

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Anwar, Khairil, Ferdinal, and Rima Devi. "Inyiak and Marvin Harris Keepers of Tradition Oral And Ecology: Challenges in the Era of Oil Palm Plantation Expansion in West Sumatra." In Proceeding of The 13th International Conference onMalaysia-Indonesia Relations (PAHMI), 147–53. Warsaw, Poland: Sciendo, 2019. http://dx.doi.org/10.2478/9783110680003-028.

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Gallagher, Kathleen, Nancy Cardwell, and Dirk J. Rodricks. "An Ecology of Care: Relationships and Responsibility Through the Constitutive and Creative Acts of Oral History Theatre Making in Local Communities Shouldering Global Crises." In Creativity Policy, Partnerships and Practice in Education, 307–29. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96725-7_14.

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Artamonov, Yuri V., Elena A. Skripaleva, Alexander V. Fedirko, and Nikolay V. Nikolsky. "Intra-annual Variability of Water Structure in the Atlantic Sector of the Southern Ocean Based on the ECMWF ORA-S3 and OI SST Reanalysis." In Advances in Polar Ecology, 65–82. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78927-5_5.

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"Storytelling and ecology: Reconnecting people and nature through oral narrative." In Storytelling and Ecology. Bloomsbury Academic, 2021. http://dx.doi.org/10.5040/9781350114951.ch-1.

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Teuton, Sean. "2. Oral literatures." In Native American Literature, 19–34. Oxford University Press, 2018. http://dx.doi.org/10.1093/actrade/9780199944521.003.0002.

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Native Americans carefully trained their memories to record and transmit vast bodies of knowledge verbatim because, in an oral society, the known universe always stood only one generation from loss. ‘Oral literatures’ explains that indigenous tales instruct in ethics, ecology, religion, or governance, and record ancient migrations, catastrophes, battles, and heroism. Oral literatures grow from differing landscapes and forms of life, and still form the basis of modern Native American writing. Despite their differences, oral literatures usually communicate a wish to live intimately with a unique ancestral land and its creatures, a commitment to a proper relationship with that land and its broad community, and a belief in the power of story to achieve this accordance.
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"The Disease: 1 Ecology of the Oral Cavity." In Caries Management-Science and Clinical Practice, edited by Hendrik Meyer-Lueckel, Sebastian Paris, Susanne Effenberger, and Kim R. Ekstrand. Stuttgart: Georg Thieme Verlag, 2013. http://dx.doi.org/10.1055/b-0034-84404.

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"7. Tidal Vegetation: Spatial And Temp Oral Dynamics." In Ecology, Conservation, and Restoration of Tidal Marshes, 97–112. University of California Press, 2019. http://dx.doi.org/10.1525/9780520954014-010.

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Conference papers on the topic "Oral ecology"

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Nazaruddin, Kahfie, Ryzal Perdana, Rian Andri Prasetya, and Ali Mustofa. "Environmental Wisdom of Lampung Warahan Oral Literature in Literature Ecology Perspective." In Universitas Lampung International Conference on Social Sciences (ULICoSS 2021). Paris, France: Atlantis Press, 2022. http://dx.doi.org/10.2991/assehr.k.220102.097.

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Gayvoronskaya, T. V., A. A. Zub, and F. S. Ayupova. "NONINVASIVE DIAGNOSTIC METHODS FOR CHRONIC PERIODONTITIS BASED ON ORAL FLUID BIOMARKER ASSESSMENT: A REVIEW." In NOVEL TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2022. http://dx.doi.org/10.47501/978-5-6044060-2-1.159-163.

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Methods of quantitative determination of biomarkers in oral fluid allow to reveal early signs of chronic periodontitis development. It is of interest to further improve the known methods for more affordable and effective application in periodontal clinical practice.
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Tang, Xian. "Oral English Teaching Aided by ICT from the Perspective of Educational Ecology." In 2018 International Conference on Education, Economics and Social Science (ICEESS 2018). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/iceess-18.2018.6.

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Khalikova, Daria Alexandrovna, Sergey Vladimirovich Ankov, and Tatiana Genrikhovna Tolstikova. "EFFECT OF RHAPONTICUM CARTHAMOIDES AND CRANBERRY MEAL EXTRACTS COMPOSITION ON GLUCOSE LEVEL." In NEW TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2021. http://dx.doi.org/10.47501/978-5-6044060-1-4.26.

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It has been found that Rhaponticum carthamoides and cranberry meal extracts composition at an effective dose of 35:250 mg/kg after 14 days of oral administration to mice promotes a significant glucose level reduction on the background of physical and glucose challenge compared to intact control.
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Badeeva, Elena, Armenak Arutyunov, Tatyana Murashkina, Yuri Vasiliev, Farida Ayupova, and Olga Gulenko. "PROMISING POSSIBILITIES OF THE OPTICAL METHODUS IN THE DIAGNOSIS OF HERPES INFECTION OF THE MOUTH." In NEW TECHNOLOGIES IN MEDICINE, BIOLOGY, PHARMACOLOGY AND ECOLOGY. Institute of information technology, 2021. http://dx.doi.org/10.47501/978-5-6044060-1-4.07.

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Modern possibilities of refractometry allow us to consider this technique as promising in terms of use in dental practice for the diagnosis of herpetic infection of the oral cavity. The method will speed up and simplify the process of diagnosing the disease, which, in turn, will improve the quality of the treatment.
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Badeeva, Elena Alexandrovna, Tatyana Ivanovna Murashkina, Nadezhda Alexandrovna Khasanshina, Dmitry Ivanovich Serebryakov, and Ekaterina Alekseevna Polyakova. "MATHEMATICAL MODEL OF OPTICAL-MECHANICAL SYSTEM OF FIBER-OPTIC PRESSURE CONVERTER OF ATTENUATOR-REFLECTIVE TYPE." In International conference New technologies in medicine, biology, pharmacology and ecology (NT +M&Ec ' 2020). Institute of information technology, 2020. http://dx.doi.org/10.47501/978-5-6044060-0-7.02.

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The article proposes a fiber-optic diagnostic system based on fiber-optic sensors of the tongue pressure on the palate of the attenuator-reflective type for use in therapeutic dentistry in the diagnosis of various abnormalities in the oral cavity caused by congenital cleavages of the upper lip and palate and other accompanying anomalies.
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Badeeva, Elena Alexandrovna, Armenak Arutyunov, Tatyana Murashkina, Yuri Vasiliev, Nadezhda Alexandrovna Khasanshina, and Ilya Evgenievich Slavkin. "FIBER-OPTIC DIAGNOSTIC SYSTEM ANOMALIES OF THE MAXILLOFACIAL AREA IN CHILDREN ARE ASSOCIATED WITH DYSFUNCTION OF THE TONGUE." In International conference New technologies in medicine, biology, pharmacology and ecology (NT +M&Ec ' 2020). Institute of information technology, 2020. http://dx.doi.org/10.47501/978-5-6044060-0-7.01.

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A fiber-optic diagnostic system based on fiber-optic sensors of the tongue pressure on the palate of the Flexural and attenuator-reflective types is proposed for use in therapeutic dentistry in the diagnosis of various abnormalities in the oral cavity caused by congenital clefts of the upper lip and palate of the ICD-10 (Q35, Q36,Q37) and other related anomalies.
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Brill, Angie, Jeff Scott, and John Patterson. "Oak Ridge Reservation Department of Energy Facilities: Waste Management Challenges and Success Stories Focusing on Waste Minimization." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4608.

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Waste generation and disposition is a challenge all face in the environmental restoration business. Over the past three years Safety and Ecology Corporation (SEC) working with Bechtel Jacobs Company, LLC (BJC) the Management and Integration subcontractor for the U.S. Department of Energy (DOE) have been able to minimize the volume of waste (mixed, hazardous, and radiological) that is disposed of and increased the volume for release, reuse, and recycle. This paper will focus on the success and challenges of several projects at the Oak Ridge National Laboratory (ORNL) and one project at the East Tennessee Technology Park (ETTP). SEC is one of four Remedial Action/Decontamination & Decommissioning (RADD) subcontractors selected by BJC to support site clean up goals. Several of these RADD projects awarded to SEC will be used to illustrate the waste management process and the challenges/successes to completion. All these projects were “fixed price” with defined milestones keyed into award fee for BJC and regulatory milestones for DOE. From the first project completed under the RADD subcontract to the most recent the waste disposition approach has been refined and a decision process developed. This decision process will be discussed in the paper and illustrated graphically to indicate the critical elements to selecting the most appropriate waste disposition option. This paper will focus on the following items associated with waste minimization efforts at the Oak Ridge Reservation DOE facilities. • Waste disposition decision process. • Waste disposition options — recycle, reuse, salvage, and disposal. • Elements of integration required for successful pre-planning — design and implementation. • Waste disposition challenges and solutions. • Decontamination to reduce mixed waste volumes. Release surveys required to disposition waste for reuse/recycle. • Lessons learned that will be integrated in future projects.
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