Abstract:
:The coexistence of bacteria in natural environments can often be explained in terms of competition for a growth-limiting substrate(s), and the outcome of such competition depends upon relevant growth parameters such as substrate affinity and yield. Dental plaque bacteria are frequently carbon and energy limited. Growth parameters for seven oral Streptococcus species and one Actinomyces viscosus strain were estimated under glucose-limited conditions in continuous culture. In all strains, mixed-acid fermentation occurred at low growth rates, while amounts of lactate increased at higher growth rates. Two important growth parameters, mumax and Y glucose, were very similar in the two serotype c Streptococcus mutans strains (T8 and Ingbritt), one of the serotype d/g Streptococcus mutans strains (OMZ65), and the two Streptococcus milleri strains (699B3 and B448). Two other serotype d/g S. mutans strains (KIR and B13) were divergent from this group and had lower mumax values and a lower Y glucose. The maintenance energy coefficients were lower in the S. mutans serotype c strains, and the highest values were observed in the S. milleri strains. While A. viscosus had a lower mumax, its lower maintenance rate and significantly higher yield indicate that it deals much more efficiently with glucose than do the streptococci. The most striking feature of amino acid utilization was that arginine was completely consumed by S. milleri strains; similarly, A. viscosus used up all available asparagine as did one of the S. milleri strains at faster growth rates. It is suggested that the ability of strains of S. milleri and S. sanguis to utilize arginine in addition to carbohydrate as a source of energy may explain why such organisms increase in proportion in the plaque of subjects consuming diets almost devoid of fermentable carbohydrate.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Rogers AH,de Jong MH,Zilm PS,van der Hoeven JSdoi
10.1128/IAI.52.3.897-901.1986subject
Has Abstractpub_date
1986-06-01 00:00:00pages
897-901issue
3eissn
0019-9567issn
1098-5522journal_volume
52pub_type
杂志文章abstract::The Fcγ receptor IIIb (FcγRIIIb) is a low-affinity receptor of IgG and is essential in neutrophil-mediated effector functions. Different allelic forms of FcγRIIIb carrying human neutrophil antigen (HNA-1a, -1b, -1c, and -1d) have been identified. Here, we have generated stable transfected HEK293 cell lines expressing ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00924-17
更新日期:2018-07-23 00:00:00
abstract::Science has always been a competitive undertaking. Despite recognition of the benefits of cooperation and team science, reduced availability of funding and jobs has made science more competitive than ever. Here we consider the benefits of competition in providing incentives to scientists and the adverse effects of com...
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2020-02-20 00:00:00
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pub_type: 杂志文章
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.8.2.215-221.1973
更新日期:1973-08-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2014-03-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.21.3.994-1002.1978
更新日期:1978-09-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.49.3.615-620.1985
更新日期:1985-09-01 00:00:00
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journal_title:Infection and immunity
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更新日期:1993-09-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.39.1.132-136.1983
更新日期:1983-01-01 00:00:00
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更新日期:2001-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2003-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:
更新日期:1980-06-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.12.5.1029-1036.1975
更新日期:1975-11-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.58.6.1614-1619.1990
更新日期:1990-06-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1982-06-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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journal_title:Infection and immunity
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更新日期:1985-08-01 00:00:00
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journal_title:Infection and immunity
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2002-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2010-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1986-01-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.69.7.4654-4656.2001
更新日期:2001-07-01 00:00:00
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journal_title:Infection and immunity
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更新日期:2002-01-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1972-11-01 00:00:00
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journal_title:Infection and immunity
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更新日期:2001-01-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00864-06
更新日期:2007-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2002-10-01 00:00:00