Multidrug-resistance efflux pumps
... that the intrinsic resistance of P. aeruginosa to several antibiotics was due to efflux. The previous year, Poole and co-workers13 had described an operon encoding an efflux system, MexAB–OprM, in wild-type P. aeruginosa and showed that deletion of genes encoding components of this system conferred ...
... that the intrinsic resistance of P. aeruginosa to several antibiotics was due to efflux. The previous year, Poole and co-workers13 had described an operon encoding an efflux system, MexAB–OprM, in wild-type P. aeruginosa and showed that deletion of genes encoding components of this system conferred ...
the ecology and microbiology of Vibrio cholerae
... Jürgens and Matz 2002). For example, protistan grazers Linking the environment to outbreaks selectively remove active cells, while cladocerans feed indiscriminately on both active and inactive (VBNC) In areas where cholera is endemic, disease outbreaks cells (Cole 1999; Langenheder and Jürgens 200 ...
... Jürgens and Matz 2002). For example, protistan grazers Linking the environment to outbreaks selectively remove active cells, while cladocerans feed indiscriminately on both active and inactive (VBNC) In areas where cholera is endemic, disease outbreaks cells (Cole 1999; Langenheder and Jürgens 200 ...
Helicobacter pylori
... H. pylori is a heterotrophic, parasitic bacterium. Because it is a single celled bacteria, it does not have a need to transport nutrients within itself. It absorbs its nutrients across its plasma membrane. The Circle of Life H. pylori is most commonly passed from host to host through a fecal-oral or ...
... H. pylori is a heterotrophic, parasitic bacterium. Because it is a single celled bacteria, it does not have a need to transport nutrients within itself. It absorbs its nutrients across its plasma membrane. The Circle of Life H. pylori is most commonly passed from host to host through a fecal-oral or ...
A plAtform for Anti-biofilm AssAys
... This thesis project was carried out in the Pharmaceutical Science Laboratory, at the Department of Biosciences during the years 2007-2012. I would here like to express my gratitude towards the many people who have helped me one way or another over the years. First of all I would like to thank profes ...
... This thesis project was carried out in the Pharmaceutical Science Laboratory, at the Department of Biosciences during the years 2007-2012. I would here like to express my gratitude towards the many people who have helped me one way or another over the years. First of all I would like to thank profes ...
Implications of bacterial viruses on pathogenic bacteria
... predators selected for bacteria that were less susceptible to infection by lytic phages, which suggests an overlap in the bacterial defense against a parasite and predatory protists. In general, the presence of lytic phages selected for lowered virulence in bacteria. High temperature selected for mo ...
... predators selected for bacteria that were less susceptible to infection by lytic phages, which suggests an overlap in the bacterial defense against a parasite and predatory protists. In general, the presence of lytic phages selected for lowered virulence in bacteria. High temperature selected for mo ...
Signals, Regulatory Networks, and Materials That Build and
... this review, we will dissect the word and then unite the parts to create the definition. A “film” is a thin coating. “Bio” refers to the living nature of this film. In other words, a biofilm is a thin coating comprised of living material. In this review, we will focus on bacterial biofilms and, in p ...
... this review, we will dissect the word and then unite the parts to create the definition. A “film” is a thin coating. “Bio” refers to the living nature of this film. In other words, a biofilm is a thin coating comprised of living material. In this review, we will focus on bacterial biofilms and, in p ...
Lesson 28. Pseudomonas
... Like some other bacteria Pseudomonas forms biofilm which serves as a safe haven for the bacteria. Biofilm is formed on quorum sensing. When a critical number of bacteria are reached bacterial cells communicate with each other by forming some molecules. Quorum sensing results in expression of genes w ...
... Like some other bacteria Pseudomonas forms biofilm which serves as a safe haven for the bacteria. Biofilm is formed on quorum sensing. When a critical number of bacteria are reached bacterial cells communicate with each other by forming some molecules. Quorum sensing results in expression of genes w ...
research.
... One downside to automated systems is that they are generally very costly initially. These costs are said to be overcome by the reduction in manual labor required for standard methods, a reduction in inpatient time, and a reduction of surgical procedures (Sellenriek, Holmes et al. 2005). Another flaw ...
... One downside to automated systems is that they are generally very costly initially. These costs are said to be overcome by the reduction in manual labor required for standard methods, a reduction in inpatient time, and a reduction of surgical procedures (Sellenriek, Holmes et al. 2005). Another flaw ...
Synergistic Interactions in Multispecies Biofilms
... this consortium a powerful model to study development and interactions in multispecies biofilms. In Manuscript 3, the gene expression profile of Xanthomonas retroflexus in a single-species biofilm was compared to its expression profiles in dual-species biofilms with Stenotrophomonas rhizophila, Micr ...
... this consortium a powerful model to study development and interactions in multispecies biofilms. In Manuscript 3, the gene expression profile of Xanthomonas retroflexus in a single-species biofilm was compared to its expression profiles in dual-species biofilms with Stenotrophomonas rhizophila, Micr ...
Attachment mechanisms and properties of bacterial - E
... on the machine surfaces that are mostly made of stainless steel (Fig 1). The paper-machine biofilms are usually composed of bacteria, EPS produced by the bacteria, wood fibers, and miscellaneous paper making additives from the process. When the slimes grow thick they can reduce water flow in pipelin ...
... on the machine surfaces that are mostly made of stainless steel (Fig 1). The paper-machine biofilms are usually composed of bacteria, EPS produced by the bacteria, wood fibers, and miscellaneous paper making additives from the process. When the slimes grow thick they can reduce water flow in pipelin ...
Population Structure and Functional Analyses, by In
... Ferguson et al., 1984), in freshwater only 0.25% (Jones, 1977), in soil samples 0.5% (Torsvik et al., 1990), and in activated sludge not more than 15% (Wagner et al., 1993; Kämpfer et al., 1996) of the indigenous bacteria could be cultivated. All remaining organisms were obviously unable to grow in ...
... Ferguson et al., 1984), in freshwater only 0.25% (Jones, 1977), in soil samples 0.5% (Torsvik et al., 1990), and in activated sludge not more than 15% (Wagner et al., 1993; Kämpfer et al., 1996) of the indigenous bacteria could be cultivated. All remaining organisms were obviously unable to grow in ...
Escherichia PCR technique A.Y. Saeed , Kh.S.Ibrahim
... Escherichia coli O157 is an important food-borne pathogen causing hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. The most studied serotype is E. coli O157:H7 which is named enterohemorrhagic or Verotoxin-producing E. coli [2]. Ruminants such as cattle, sheep and goats have implicat ...
... Escherichia coli O157 is an important food-borne pathogen causing hemorrhagic colitis and hemolytic uremic syndrome in humans [1]. The most studied serotype is E. coli O157:H7 which is named enterohemorrhagic or Verotoxin-producing E. coli [2]. Ruminants such as cattle, sheep and goats have implicat ...
Opportunistic pathogens and their biofilm “Food for thought”
... others authors have been described that the un-wise use of disinfectant lead to the flourish of some bacterial species [4]. There are many scientific concepts around that will be discussed within this study. This is due to that disinfectants kill all P. aeruginosa competitors' strains and moreover s ...
... others authors have been described that the un-wise use of disinfectant lead to the flourish of some bacterial species [4]. There are many scientific concepts around that will be discussed within this study. This is due to that disinfectants kill all P. aeruginosa competitors' strains and moreover s ...
E. coli - MicrobeWorld
... and water are the most common routes of entry for both types of E. coli. Once in the gut, pathogenic E. coli must be able to attach to intestinal cells in order to make us sick. Some strains produce hair-like appendages called pili or fimbriae that allow them to stick to the cells lining the intesti ...
... and water are the most common routes of entry for both types of E. coli. Once in the gut, pathogenic E. coli must be able to attach to intestinal cells in order to make us sick. Some strains produce hair-like appendages called pili or fimbriae that allow them to stick to the cells lining the intesti ...
INVASION OF DENTINAL TUBULES BY ORAL BACTERIA
... Dentinal fluid within non-vital root dentin is fluid originatnot have a regular tubular form. Since the circumference of the ing from alveolar bone and periodontal ligament, while peripheral part of the crown or root is larger than the circumdentinal fluid within non-vital coronal dentin is likely t ...
... Dentinal fluid within non-vital root dentin is fluid originatnot have a regular tubular form. Since the circumference of the ing from alveolar bone and periodontal ligament, while peripheral part of the crown or root is larger than the circumdentinal fluid within non-vital coronal dentin is likely t ...
C. ELEGANS AS A VIRULENCE MODEL FOR E. COLI STRAIN 042
... A crucial step in pathogenesis is adherence to the epithelium of the gastrointestinal tract. This is related to the biogenesis of aggregative adherence fimbriae (AAF), see figure 2.2 (Czeczulin et al., 1997). Three typical types of AAF (AAF/I, AAF/II, AAF/III), together with a newly found adhesin en ...
... A crucial step in pathogenesis is adherence to the epithelium of the gastrointestinal tract. This is related to the biogenesis of aggregative adherence fimbriae (AAF), see figure 2.2 (Czeczulin et al., 1997). Three typical types of AAF (AAF/I, AAF/II, AAF/III), together with a newly found adhesin en ...
O A
... The susceptibility of the seventy one bacterial isolates to antibiotics was determined by the Kirby-Bauer disk diffusion method (Bauer et al., 1966). Then the more susceptible and the multidrug-resistance GNB (Escherichia coli, Salmonella typhi, Klebsiella pneumoniae and Pseudomonas aeruginosa) were ...
... The susceptibility of the seventy one bacterial isolates to antibiotics was determined by the Kirby-Bauer disk diffusion method (Bauer et al., 1966). Then the more susceptible and the multidrug-resistance GNB (Escherichia coli, Salmonella typhi, Klebsiella pneumoniae and Pseudomonas aeruginosa) were ...
What`s in that Wound Bed
... – Concluded: “evidence base for the efficacy of maggot debridement therapy (MDT) in the management of necrotic wounds is sparse.” – “Even though clinical evidence supporting the use of MDT for debridement of wounds is lacking, clinical experience strongly suggests that this technique is an effective ...
... – Concluded: “evidence base for the efficacy of maggot debridement therapy (MDT) in the management of necrotic wounds is sparse.” – “Even though clinical evidence supporting the use of MDT for debridement of wounds is lacking, clinical experience strongly suggests that this technique is an effective ...
Author`s post-print - Cardiff Metropolitan University
... Incubating P. aeruginosa with 20% (w/v) artificial honey elicited the formation of greater biofilm biomass and activity than untreated controls (Fig. 1), which indicated that biofilm inhibition was not caused by the sugar content of honey alone. The effect of Medihoney™ in inhibiting established bio ...
... Incubating P. aeruginosa with 20% (w/v) artificial honey elicited the formation of greater biofilm biomass and activity than untreated controls (Fig. 1), which indicated that biofilm inhibition was not caused by the sugar content of honey alone. The effect of Medihoney™ in inhibiting established bio ...
Morphology, physiology of microorganisms. Virology
... E. *Mycobacterium tuberculosis stains blue because it has a thick lipid layer 51. Fimbriae A. cause bacteria move through fluids. B. sense changes in nutrient concentration. C. are pathways for the secretion of exoenzymes. D. are pathways for the nutrition. E. *attach bacteria to various surfaces. 5 ...
... E. *Mycobacterium tuberculosis stains blue because it has a thick lipid layer 51. Fimbriae A. cause bacteria move through fluids. B. sense changes in nutrient concentration. C. are pathways for the secretion of exoenzymes. D. are pathways for the nutrition. E. *attach bacteria to various surfaces. 5 ...
Morphology, physiology of microorganisms. Virology
... E. *Mycobacterium tuberculosis stains blue because it has a thick lipid layer 51. Fimbriae A. cause bacteria move through fluids. B. sense changes in nutrient concentration. C. are pathways for the secretion of exoenzymes. D. are pathways for the nutrition. E. *attach bacteria to various surfaces. 5 ...
... E. *Mycobacterium tuberculosis stains blue because it has a thick lipid layer 51. Fimbriae A. cause bacteria move through fluids. B. sense changes in nutrient concentration. C. are pathways for the secretion of exoenzymes. D. are pathways for the nutrition. E. *attach bacteria to various surfaces. 5 ...
Whole-Cell Bacterial Biosensors and the Detection of - CLU-IN
... Arsenic can be found at most sites on the National Priority List and at the top of the Agency for Toxic Substances and Drug Registry’s (ATSDR) 2001 CERCLA Priority List of Hazardous Substances based on its toxicity to human health and potential for human exposure (ATSDR 1993). Current risk assessmen ...
... Arsenic can be found at most sites on the National Priority List and at the top of the Agency for Toxic Substances and Drug Registry’s (ATSDR) 2001 CERCLA Priority List of Hazardous Substances based on its toxicity to human health and potential for human exposure (ATSDR 1993). Current risk assessmen ...
Inducer expulsion and the occurrence of an HPr(Ser-P)
... enzyme. Like the efflux process, the enzyme is dependent on Mg2+but insensitive to fluoride inhibition. It has been designated phosphatase I1 (Pase 11) to distinguish it from a different, larger, heat-sensitive phosphatase (Pase I) of Lc. lactis that is inhibited by fluoride and insensitive to HPr(S ...
... enzyme. Like the efflux process, the enzyme is dependent on Mg2+but insensitive to fluoride inhibition. It has been designated phosphatase I1 (Pase 11) to distinguish it from a different, larger, heat-sensitive phosphatase (Pase I) of Lc. lactis that is inhibited by fluoride and insensitive to HPr(S ...
Interactions of Foodborne Pathogens with Free‐living Protozoa
... (micro)algae), and slime molds (“fungi-like” protists) in the Kingdom Protista served for many years. Several fundamental revisions of Whittaker’s classification scheme have followed (for example, Woese and others 1990; Cavalier-Smith 2004) and the idea of protists as a separate group was abandoned. ...
... (micro)algae), and slime molds (“fungi-like” protists) in the Kingdom Protista served for many years. Several fundamental revisions of Whittaker’s classification scheme have followed (for example, Woese and others 1990; Cavalier-Smith 2004) and the idea of protists as a separate group was abandoned. ...
Quorum sensing
Quorum sensing is a system of stimulae and response correlated to population density. Many species of bacteria use quorum sensing to coordinate gene expression according to the density of their local population. In similar fashion, some social insects use quorum sensing to determine where to nest. In addition to its function in biological systems, quorum sensing has several useful applications for computing and robotics.Quorum sensing can function as a decision-making process in any decentralized system, as long as individual components have: (a) a means of assessing the number of other components they interact with and (b) a standard response once a threshold number of components is detected.