gabriela sinkiewicz lactobacillus reuteri in health and disease
... individuals or patients who have a weakened intestinal barrier. There have been some reported cases of bacteremia caused by lactobacilli, but this is a very rare event, promoted by severe underlying conditions such as serious gastrointestinal disorders. The long history of safe use of the bacteria i ...
... individuals or patients who have a weakened intestinal barrier. There have been some reported cases of bacteremia caused by lactobacilli, but this is a very rare event, promoted by severe underlying conditions such as serious gastrointestinal disorders. The long history of safe use of the bacteria i ...
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 ...
Arriving at a correlation between the flagellar arrangement and
... non-similarities in the ultrastructure, development and motion dynamics of the three known varieties (viz. Eukaryotic, bacterial, and the archaeal types) [14-17]. Some overlaps in the gene/protein sequence similarities have led many to believe that the eubacterial flagella originated from the T3SS, ...
... non-similarities in the ultrastructure, development and motion dynamics of the three known varieties (viz. Eukaryotic, bacterial, and the archaeal types) [14-17]. Some overlaps in the gene/protein sequence similarities have led many to believe that the eubacterial flagella originated from the T3SS, ...
Full text in pdf - International Microbiology
... respond to changes in various physicochemical gradients, and locate themselves according to the most favorable environmental conditions. This behavior is likely to govern the vertical species stratification that results from the active migration of motile cells in response to the shifting gradients ...
... respond to changes in various physicochemical gradients, and locate themselves according to the most favorable environmental conditions. This behavior is likely to govern the vertical species stratification that results from the active migration of motile cells in response to the shifting gradients ...
introduction
... lecture. The first several labs enable the student to master techniques essential in working with and studying microorganisms. The next series covers microbial morphology. A number of labs deal with the laboratory isolation and identification of common opportunistic and pathogenic microorganisms as ...
... lecture. The first several labs enable the student to master techniques essential in working with and studying microorganisms. The next series covers microbial morphology. A number of labs deal with the laboratory isolation and identification of common opportunistic and pathogenic microorganisms as ...
ppt
... - chemolithotrophs: use inorganics (H2S, etc.) as electron donors for electron transport chains and use energy to fix carbon dioxide. Only done by bacteria. - photoheterotrophs: use light as source of energy, but harvest organics from environment. Only done by bacteria. - photoautotrophs: use light ...
... - chemolithotrophs: use inorganics (H2S, etc.) as electron donors for electron transport chains and use energy to fix carbon dioxide. Only done by bacteria. - photoheterotrophs: use light as source of energy, but harvest organics from environment. Only done by bacteria. - photoautotrophs: use light ...
Purification, Characterization and Antibacterial Mechanism of
... bacteriocin indicated was not entirely dependent on the peptide or protein fraction [18]. The eluate of cellufine A-500 column had antimicrobial activity, but cellufine C-500 column had no antimicrobial activity. It showed that the bacteriocin was a protein with more acidic ...
... bacteriocin indicated was not entirely dependent on the peptide or protein fraction [18]. The eluate of cellufine A-500 column had antimicrobial activity, but cellufine C-500 column had no antimicrobial activity. It showed that the bacteriocin was a protein with more acidic ...
Inducer expulsion and the occurrence of an HPr(Ser-P)
... Streptococcus bovis, and &ctococcus lads, but not for other Gram-positive bacteria. Using intact cells and membrane vesicles, we show that Entemcoccus faecalis exhibits both inducer exclusion and inducer expulsion, and that the latter phenomenon is dependent on the metabolite-activated ATP-dependent ...
... Streptococcus bovis, and &ctococcus lads, but not for other Gram-positive bacteria. Using intact cells and membrane vesicles, we show that Entemcoccus faecalis exhibits both inducer exclusion and inducer expulsion, and that the latter phenomenon is dependent on the metabolite-activated ATP-dependent ...
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 ...
development of a carbohydrate microarray system and
... receptors for Escherichia coli and Pseudomonas aeruginosa, respectively, are of great interest to researchers due to their high affinity. These interactions can be studied using carbohydrate microarrays, which are also suitable platforms for detecting bacterial pathogens. In addition, carbohydrates ...
... receptors for Escherichia coli and Pseudomonas aeruginosa, respectively, are of great interest to researchers due to their high affinity. These interactions can be studied using carbohydrate microarrays, which are also suitable platforms for detecting bacterial pathogens. In addition, carbohydrates ...
ROLE OF IONIZED CALCIUM AND MAGNESIUM IN CELLULOSE
... respectively. A logistic function could not be fitted for RA 8, due to the slow G and limited CD; therefore, RA 8 was analyzed separately; by linear regression was determined RG and RD; and a positive effect on RG (P<0.05), and no effect on RD (P>0.05) were found related to Ca+2 concentration. The a ...
... respectively. A logistic function could not be fitted for RA 8, due to the slow G and limited CD; therefore, RA 8 was analyzed separately; by linear regression was determined RG and RD; and a positive effect on RG (P<0.05), and no effect on RD (P>0.05) were found related to Ca+2 concentration. The a ...
Chapter 28: Prokaryotes
... How do these factors affect the evolution of antibiotic resistance, and of resistance to multiple antibiotics in particular? Answer—The multiple antibiotics are not a bad idea if all of the bacteria are killed. In the case of some persistent infections, this is an effective strategy. However, it doe ...
... How do these factors affect the evolution of antibiotic resistance, and of resistance to multiple antibiotics in particular? Answer—The multiple antibiotics are not a bad idea if all of the bacteria are killed. In the case of some persistent infections, this is an effective strategy. However, it doe ...
Bacteriophages of Soft Rot Enterobacteriaceae
... of unknown SRE strains to determine whether the phages form plaques on bacterial lawns in vitro. It was assumed that bacterial strains that were susceptible to the same bacteriophages were more related to each other than the strains that were resistant or more prone to be infected by different phage ...
... of unknown SRE strains to determine whether the phages form plaques on bacterial lawns in vitro. It was assumed that bacterial strains that were susceptible to the same bacteriophages were more related to each other than the strains that were resistant or more prone to be infected by different phage ...
The prokaryotes
... N2-fixing bacteria are normally isolated in N-free media. Whether a microorganism is a N2 fixer is not easy to determine. In the past, claims for many fixers were shown to be erroneous, mainly because fixers were recognized by their ability to grow in N-free media. However, traces of fixed nitrogen ...
... N2-fixing bacteria are normally isolated in N-free media. Whether a microorganism is a N2 fixer is not easy to determine. In the past, claims for many fixers were shown to be erroneous, mainly because fixers were recognized by their ability to grow in N-free media. However, traces of fixed nitrogen ...
The Effect of Glyphosate on Potential Pathogens and Beneficial
... animals consists of a balanced composition of facultative and obligatory anaerobic bacteria. The mature microbiota profile varies considerably along the length of the GIT and may be specific to animal species and individuals [22]. Numerous bacteria of the GIT produce bacteriocines directed against s ...
... animals consists of a balanced composition of facultative and obligatory anaerobic bacteria. The mature microbiota profile varies considerably along the length of the GIT and may be specific to animal species and individuals [22]. Numerous bacteria of the GIT produce bacteriocines directed against s ...
Antibacterial substances and characteristics of the haemolymph of
... Xylander & Nevermann (1990) reported that no inhibition zones were found in agar with suspended Escherichia coli (Migula, 1895) after application of 4 µl of haemolymph of different chilopod and diplopod species, whereas the growth of another gram-negative bacterium, Enterobacter cloacae (Jordan, 189 ...
... Xylander & Nevermann (1990) reported that no inhibition zones were found in agar with suspended Escherichia coli (Migula, 1895) after application of 4 µl of haemolymph of different chilopod and diplopod species, whereas the growth of another gram-negative bacterium, Enterobacter cloacae (Jordan, 189 ...
ABSTRACT LEMING, CHRISTOPHER LLOYD. Deducing the
... Jacob and Wollman (Jacob and Wollman 1958). Episomes are often infectious, either by promoting their own transfer or by the production of infectious particles. Their most important feature is that they can replicate in either one of two alternative states, that is, independently in the cytoplasm or, ...
... Jacob and Wollman (Jacob and Wollman 1958). Episomes are often infectious, either by promoting their own transfer or by the production of infectious particles. Their most important feature is that they can replicate in either one of two alternative states, that is, independently in the cytoplasm or, ...
Abstract wide variety of environments is due in part to its... genetic versatility, which contributes significantly ...
... concentration 1,000–1,500 times higher than the concentration needed to kill planktonic cells of the same species (Tenke, 2006). Aminoglycosides and beta-lactam antibiotics were showed to be able to prevent the formation of “young” biofilms, while fluoroquinolones are effective in case of both “youn ...
... concentration 1,000–1,500 times higher than the concentration needed to kill planktonic cells of the same species (Tenke, 2006). Aminoglycosides and beta-lactam antibiotics were showed to be able to prevent the formation of “young” biofilms, while fluoroquinolones are effective in case of both “youn ...
Alexander Fleming - Nobel Lecture
... In 1929, I published the results which I have briefly given to you and suggested that it would be useful for the treatment of infections with sensitive microbes. I referred again to penicillin in one or two publications up to 1936 but few people paid any attention. It was only when some 10 years lat ...
... In 1929, I published the results which I have briefly given to you and suggested that it would be useful for the treatment of infections with sensitive microbes. I referred again to penicillin in one or two publications up to 1936 but few people paid any attention. It was only when some 10 years lat ...
Isolation of a New, Pink, Obligately Thermophilic, Gram
... been shown that these isolates are sporeforming bacteria (8, 9). A second possibility would be t o place K-2 in a separate species in an existing genus such as Thermus. The base ratio of the K-2 DNA falls within the range designated for Thermus. Like Thermus strains, it only grows on dilute organic ...
... been shown that these isolates are sporeforming bacteria (8, 9). A second possibility would be t o place K-2 in a separate species in an existing genus such as Thermus. The base ratio of the K-2 DNA falls within the range designated for Thermus. Like Thermus strains, it only grows on dilute organic ...
Caco-2, HT-29, HT29 MTX
... healthy individuals. The beneficial microflora found in the GI was termed probiotic microbes. The term probiotic was defined more than 20 years ago and is usually defined as live microorganisms or microbial food supplements that confer health benefits for the host, when administered in adequate amou ...
... healthy individuals. The beneficial microflora found in the GI was termed probiotic microbes. The term probiotic was defined more than 20 years ago and is usually defined as live microorganisms or microbial food supplements that confer health benefits for the host, when administered in adequate amou ...
Introduction
... demonstrates conjunctival chemosis often with significant amount of yellowish exudates in the conjunctival sac. The upper lid becomes edematous. The cornea demonstrates variable degree of edema, and pigmented cells may accumulate on its posterior surface. The anterior chamber (AC) shows flare and ce ...
... demonstrates conjunctival chemosis often with significant amount of yellowish exudates in the conjunctival sac. The upper lid becomes edematous. The cornea demonstrates variable degree of edema, and pigmented cells may accumulate on its posterior surface. The anterior chamber (AC) shows flare and ce ...
MICROBIAL CR(VI) REDUCTION IN INDIGENOUS CULTURES OF BACTERIA: CHARACTERIZATION AND MODELLING
... Batch experiments under both aerobic and anaerobic conditions showed a high Cr(VI) reducing performance under relatively high initial Cr(VI) concentrations. The reduction rate using this culture was 3 to 8 times higher than reduction rates reported in bacteria previously isolated and studied in Nor ...
... Batch experiments under both aerobic and anaerobic conditions showed a high Cr(VI) reducing performance under relatively high initial Cr(VI) concentrations. The reduction rate using this culture was 3 to 8 times higher than reduction rates reported in bacteria previously isolated and studied in Nor ...
Methanogenesis in low sulfate hot spring algal-bacterial mats
... National Park) was studied. Methanogenesis was found to be greatest 13-23 C lower than the upper temperature limit for mat development which was about 73 C. Samples from various temperature regimes of the mat (44-60 C) all showed increased methane production upon incubation at elevated temperatures ...
... National Park) was studied. Methanogenesis was found to be greatest 13-23 C lower than the upper temperature limit for mat development which was about 73 C. Samples from various temperature regimes of the mat (44-60 C) all showed increased methane production upon incubation at elevated temperatures ...
(Annona muricata L.) Leaves
... Abstract : Background: The use of natural product medicines has emerged from traditional to modern therapy in order to increase the quality of health worldwide. Nature-derived medicines are considered safer. The leaves of soursop (Annona muricata L.) has long been used by certain local communities i ...
... Abstract : Background: The use of natural product medicines has emerged from traditional to modern therapy in order to increase the quality of health worldwide. Nature-derived medicines are considered safer. The leaves of soursop (Annona muricata L.) has long been used by certain local communities i ...
Bacteria
Bacteria (/bækˈtɪəriə/; singular: bacterium) constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep portions of Earth's crust. Bacteria also live in symbiotic and parasitic relationships with plants and animals. They are also known to have flourished in manned spacecraft.There are typically 40 million bacterial cells in a gram of soil and a million bacterial cells in a millilitre of fresh water. There are approximately 5×1030 bacteria on Earth, forming a biomass which exceeds that of all plants and animals. Bacteria are vital in recycling nutrients, with many of the stages in nutrient cycles dependent on these organisms, such as the fixation of nitrogen from the atmosphere and putrefaction. In the biological communities surrounding hydrothermal vents and cold seeps, bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. On 17 March 2013, researchers reported data that suggested bacterial life forms thrive in the Mariana Trench, which with a depth of up to 11 kilometres is the deepest part of the Earth's oceans. Other researchers reported related studies that microbes thrive inside rocks up to 580 metres below the sea floor under 2.6 kilometres of ocean off the coast of the northwestern United States. According to one of the researchers, ""You can find microbes everywhere — they're extremely adaptable to conditions, and survive wherever they are.""Most bacteria have not been characterized, and only about half of the phyla of bacteria have species that can be grown in the laboratory. The study of bacteria is known as bacteriology, a branch of microbiology.There are approximately ten times as many bacterial cells in the human flora as there are human cells in the body, with the largest number of the human flora being in the gut flora, and a large number on the skin. The vast majority of the bacteria in the body are rendered harmless by the protective effects of the immune system, and some are beneficial. However, several species of bacteria are pathogenic and cause infectious diseases, including cholera, syphilis, anthrax, leprosy, and bubonic plague. The most common fatal bacterial diseases are respiratory infections, with tuberculosis alone killing about 2 million people per year, mostly in sub-Saharan Africa. In developed countries, antibiotics are used to treat bacterial infections and are also used in farming, making antibiotic resistance a growing problem. In industry, bacteria are important in sewage treatment and the breakdown of oil spills, the production of cheese and yogurt through fermentation, and the recovery of gold, palladium, copper and other metals in the mining sector, as well as in biotechnology, and the manufacture of antibiotics and other chemicals.Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea.