Microbial interaction
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Journal of applied microbiology ; Supplement Vol. 74. 22
VIIS, 160S s. : grafy, obr., tab. ; 28 cm
- MeSH
- Bacteria MeSH
- fyziologie bakterií MeSH
- mikrobiologické techniky MeSH
- Publikační typ
- kongresy MeSH
- Konspekt
- Mikrobiologie
- NLK Obory
- mikrobiologie, lékařská mikrobiologie
... FoMHS, Hradec Králové, CZ) -- 12:30-2:00pm Lunch - A RKADA hotel -- 2:00-2.40pm Joshi Lokesh - Host-Microbial ... ... interaction: identification and application of glycan-lectin components as decontamination tools (National ... ... 5.55pm KRD obchodní spolecnost s.r.o. - OpenSPR: New approach to determination ofthe biomolecular interactions ...
54 nečíslovaných stran : barevné ilustrace ; 22 cm
- MeSH
- interakce hostitele a parazita MeSH
- Publikační typ
- abstrakty MeSH
- kongresy MeSH
- programy MeSH
- souborné dílo MeSH
- zprávy MeSH
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- infekční lékařství
Acanthamoeba is known to interact with a plethora of microorganisms such as bacteria, fungi and viruses. In these interactions, the amoebae can be predatory in nature, transmission vehicle or an incubator. Amoebae consume microorganisms, especially bacteria, as food source to fulfil their nutritional needs by taking up bacteria through phagocytosis and lysing them in phagolysosomes and hence play an eminent role in the regulation of bacterial density in the nature and accountable for eradication of around 60% of the bacterial population in the environment. Acanthamoeba can also act as a "Trojan horse" for microbial transmission in the environment. Additionally, Acanthamoeba may serve as an incubator-like reservoir for microorganisms, including those that are pathogenic to humans, where the microorganisms use amoebae's defences to resist harsh environment and evade host defences and drugs, whilst growing in numbers inside the amoebae. Furthermore, amoebae can also be used as a "genetic melting pot" where exchange of genes as well as adaptation of microorganisms, leading to higher pathogenicity, may arise. Here, we describe bacteria, fungi and viruses that are known to interact with Acanthamoeba spp.
- MeSH
- analýza jednotlivých buněk MeSH
- Bacteria * MeSH
- interakce mikroorganismu a hostitele * MeSH
- Publikační typ
- úvodníky MeSH
Temperature plays crucial roles in microbial interactions that affect the stability and performance of anaerobic digestion. In this study, the microbial interactions and their succession in the anaerobic digestion process were investigated at three levels, represented by (1) present and (2) active micro-organisms, and (3) gene expressions under a temperature gradient from 25 to 55 °C. Network topological features indicated a global variation in microbial interactions at different temperatures. The variations of microbial interactions in terms of network modularity and deterministic processes based on topological features, corresponded well with the variations of methane productions, but not with temperatures. A common successional pattern of microbial interactions was observed at different temperatures, which showed that both deterministic processes and network modularity increased over time during the digestion process. It was concluded that the increase in temperature-mediated network modularity and deterministic processes on shaping the microbial interactions improved the stability and efficiency of anaerobic digestion process.
- MeSH
- anaerobióza MeSH
- bioreaktory * MeSH
- methan MeSH
- mikrobiální interakce * MeSH
- teplota * MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
The host-pathogen interaction represents a complex and dynamic biological system. The outcome of this interaction is dependent on the microbial pathogen properties to establish infection and the ability of the host to control infection. Although bacterial pathogens have evolved a variety of strategies to subvert host defense functions, several general mechanisms have been shown to be shared among these pathogens. As a result, host effectors that are critical for pathogen entry, survival and replication inside the host cells have become a new paradigm for antimicrobial targeting. This review focuses on the potential utility of a proteomics approach in defining the host-pathogen interaction from the host's perspective.
Úzkost představuje kombinaci emocí zahrnujících strach, obavy a očekávání nebezpečí či stresu a je doprovázena řadou somatických projevů. Při reálné či domnělé hrozbě bývá jednou z reakcí posilujících pravděpodobnost přežití i příjem potravy - jídlo. Potrava představuje nejen energetický a stavební substrát, ale je i zdrojem řady specifických a nespecifických podnětů. Příjem potravy má kromě základního homeostatického významu i důležitou úlohu při vývoji, dosažené míře a stabilitě emočních a kognitivních funkcí. Interakce gastrointestinálního i nervového systému má několik úrovní: je zprostředkovávána jak nervovými spoji, tak i humorálním tokem signálních molekul, ať již to jsou vstřebané neuroaktivní složky potravy, endogenní humorální faktory tvořené v GIT, nebo cytokiny imunitního systému. Spolupráce a provázanost funkcí obou systému je zřetelná i v patogenezi některých chorob jak trávicího, tak i nervového systému.
Anxiety is a combination of emotions including fear, worry and anticipation of danger or stress, and is accompanied by a number of somatic symptoms. At a real or imagined threat, one of the reactions reinforcing the likelihood of survival is eating. Food is not only energy and building substrate, but is also the source of a number of specific and nonspecific stimuli. In addition to the basic homeostatic significance, food has an important role in the development and stability of the emotional and cognitive functions. Interaction of gastrointestinal and nervous system has several levels: it is mediated by neural connections as well as by the humoral transport of signaling molecules, whether they are absorbed neuroactive food components, endogenous humoral factors formed in the GIT or cytokines of the immune system. Cooperation and complex interaction are also evident in the pathogenesis of various diseases of the gastrointestinal and nervous systems.
- MeSH
- centrální nervový systém * fyziologie metabolismus patofyziologie MeSH
- gastrointestinální trakt inervace metabolismus patofyziologie MeSH
- humorální imunita fyziologie imunologie MeSH
- lidé MeSH
- mikrobiota MeSH
- signální transdukce MeSH
- střevní nervový systém * patofyziologie MeSH
- úzkost * patofyziologie MeSH
- úzkostné poruchy * patofyziologie MeSH
- vztahy mezi matkou a dítětem MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- přehledy MeSH
- MeSH
- Archaea genetika metabolismus MeSH
- Bacteria genetika metabolismus MeSH
- chlor metabolismus MeSH
- houby genetika metabolismus MeSH
- mikrobiální společenstva fyziologie MeSH
- polymorfismus délky restrikčních fragmentů MeSH
- půda analýza MeSH
- půdní mikrobiologie MeSH
- RNA ribozomální 16S analýza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
The surface conditions on the Moon are extremely harsh with high doses of ultraviolet (UV) irradiation (26.8 W · m-2 UVC/UVB), wide temperature extremes (-171°C to 140°C), low pressure (10-10 Pa), and high levels of ionizing radiation. External spacecraft surfaces on the Moon are generally >100°C during daylight hours and can reach as high as 140°C at local noon. A Lunar Microbial Survival (LMS) model was developed that estimated (1) the total viable bioburden of all spacecraft landed on the Moon as ∼4.57 × 1010 microbial cells/spores at contact, (2) the inactivation kinetics of Bacillus subtilis spores to vacuum as approaching -2 logs per 2107 days, (3) the inactivation of spores on external surfaces due to concomitant low-pressure and high-temperature conditions as -6 logs per 8 h for local noon conditions, and (4) the ionizing radiation by solar wind particles as approaching -3 logs per lunation on external surfaces only. When the biocidal factors of solar UV, vacuum, high-temperature, and ionizing radiation were combined into an integrated LMS model, a -231 log reduction in viable bioburden was predicted for external spacecraft surfaces per lunation at the equator. Results indicate that external surfaces of landed or crashed spacecraft are unlikely to harbor viable spores after only one lunation, that shallow internal surfaces will be sterilized due to the interactive effects of vacuum and thermal cycling from solar irradiation, and that deep internal surfaces would be affected only by vacuum with a degradation rate of -0.02 logs per lunation.
- MeSH
- Bacillus subtilis fyziologie účinky záření MeSH
- biologické modely * MeSH
- kosmická loď MeSH
- kosmické záření škodlivé účinky MeSH
- Měsíc * MeSH
- mikrobiální viabilita účinky záření MeSH
- mimozemské prostředí MeSH
- simulace kosmického prostředí metody MeSH
- spory bakteriální fyziologie účinky záření MeSH
- ultrafialové záření škodlivé účinky MeSH
- vakuum MeSH
- vysoká teplota MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, U.S. Gov't, Non-P.H.S. MeSH