Bacterial lipid membranes as promising targets to fight antimicrobial
... agents. The considerable metabolic flexibility including in the synthesis of LPS/LTA or of lipids of bacterial membranes is linked to the activation of transcriptional regulatory genes that in turn lead to critical modifications for the recognition between cationic amphiphilic antibacterials as well ...
... agents. The considerable metabolic flexibility including in the synthesis of LPS/LTA or of lipids of bacterial membranes is linked to the activation of transcriptional regulatory genes that in turn lead to critical modifications for the recognition between cationic amphiphilic antibacterials as well ...
The Effects of selected toothpaste on the microbial flora of the mouth
... Dean (1998) explained that most tooth paste contain trace amounts of chemicals that may be toxic when ingested. The bacteria in the mouth are mainly present in the saliva and at the tooth surface. The oral cavity is also where food digestion starts such as protein, vitamin, carbohydrate, fats and oi ...
... Dean (1998) explained that most tooth paste contain trace amounts of chemicals that may be toxic when ingested. The bacteria in the mouth are mainly present in the saliva and at the tooth surface. The oral cavity is also where food digestion starts such as protein, vitamin, carbohydrate, fats and oi ...
... often derived from compounds produced by other bacteria or molds; they are effective in treating many bacterial infections.11 Antibiotics are only effective in stopping the growth of bacteria, not other infectious agents such as viruses and fungi. Antibiotics may be bactericidal, meaning that they n ...
Antimicrobial resistance mechanisms of Staphylococcus aureus
... Another main difference in MRSA strains was observed because originally, MRSA was thought to be primarily a nosocomial infection issue. There seemed to be a clear delineation between MRSA infections acquired in the hospital setting (hospital-acquired or HA-MRSA), and those acquired in the community ...
... Another main difference in MRSA strains was observed because originally, MRSA was thought to be primarily a nosocomial infection issue. There seemed to be a clear delineation between MRSA infections acquired in the hospital setting (hospital-acquired or HA-MRSA), and those acquired in the community ...
IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS)
... Aminoglycosides are compounds that are characterised by the presences of an aminocyclitol ring linked to amino-sugars in their structure. Those that are derived from bacteria of the Streptomyces genus are named with the suffix –mycin (e.g streptomycin, neomycin, tobramycin etc), whereas those that a ...
... Aminoglycosides are compounds that are characterised by the presences of an aminocyclitol ring linked to amino-sugars in their structure. Those that are derived from bacteria of the Streptomyces genus are named with the suffix –mycin (e.g streptomycin, neomycin, tobramycin etc), whereas those that a ...
MS Word - Nano
... (TiO2) and a silver (Ag) nano-particle compound. The coating uses two mechanisms to deactivate enzymes and proteins to prevent a wide spectrum of bacteria, fungi and algae from surviving on the surface of the mouse. Slide 13 (Antibacterial Athletic Socks): These socks made by Sharper Image are fairl ...
... (TiO2) and a silver (Ag) nano-particle compound. The coating uses two mechanisms to deactivate enzymes and proteins to prevent a wide spectrum of bacteria, fungi and algae from surviving on the surface of the mouse. Slide 13 (Antibacterial Athletic Socks): These socks made by Sharper Image are fairl ...
Microbes - KICS Learns
... What are microbes? Microbes are very small living things and are sometimes called micro-organisms. Microbes are so tiny that they cannot be seen with the naked eye. They can only be seen using a microscope. How many different microbes can you name? ...
... What are microbes? Microbes are very small living things and are sometimes called micro-organisms. Microbes are so tiny that they cannot be seen with the naked eye. They can only be seen using a microscope. How many different microbes can you name? ...
BACTERIAL BIOFILMS IN NATURE AND DISEASE
... antibiotics (66), and growthon solid surfaces (67). Equally profounddifferences in enzymeactivity have been noted betweenbacterial cells adherent to surfaces anti planktonic cells of the same organism(C. S. Dow,R. Whittenbury &D. Kelly, unpublished). These data suggest that sessile cells have more a ...
... antibiotics (66), and growthon solid surfaces (67). Equally profounddifferences in enzymeactivity have been noted betweenbacterial cells adherent to surfaces anti planktonic cells of the same organism(C. S. Dow,R. Whittenbury &D. Kelly, unpublished). These data suggest that sessile cells have more a ...
BioPure™ MTAD™ Antibacterial Root Canal Cleanser Research
... 1. Zhang W, Torabinejad M, Li Y. Evaluation of cytotoxicity of MTAD using the MTT tetrazolium method. J Endodon 2003; 29(10):654-7. • Summary: • The purpose of this investigation was to test the cytotoxicity of MTAD compared with that of commonly used irrigants and medications. • Conclusion: Based o ...
... 1. Zhang W, Torabinejad M, Li Y. Evaluation of cytotoxicity of MTAD using the MTT tetrazolium method. J Endodon 2003; 29(10):654-7. • Summary: • The purpose of this investigation was to test the cytotoxicity of MTAD compared with that of commonly used irrigants and medications. • Conclusion: Based o ...
Flagellated Ectosymbiotic Bacteria Propel a Eucaryotic Cell
... movements of the head and flagellar activity continue vigorously in these stationary cells, however, indicating that the protozoan's own motile systems do not propel it. If such nongliding devescovinids are gently flattened by pressure on the cover slip so that most of their body surface is in conta ...
... movements of the head and flagellar activity continue vigorously in these stationary cells, however, indicating that the protozoan's own motile systems do not propel it. If such nongliding devescovinids are gently flattened by pressure on the cover slip so that most of their body surface is in conta ...
Teacher`s Guide - American Chemical Society
... The term probiotic refers to “…live strains of bacteria similar to the ones that live naturally in the human gut.” The microbiome is the name for all the bacteria living inside our body. 2. What are some of the benefits that some think may be provided to our bodies by some of our gut bacteria? Diffe ...
... The term probiotic refers to “…live strains of bacteria similar to the ones that live naturally in the human gut.” The microbiome is the name for all the bacteria living inside our body. 2. What are some of the benefits that some think may be provided to our bodies by some of our gut bacteria? Diffe ...
Bacterial
... that posses them the ability to thrive in environments containing antibiotics secreted by other microorganisms. Usually these genes encode enzymes that inactivate specific antibiotics or prevent them from working in some way. The widespread and often indiscriminate use of antibiotics in the treatmen ...
... that posses them the ability to thrive in environments containing antibiotics secreted by other microorganisms. Usually these genes encode enzymes that inactivate specific antibiotics or prevent them from working in some way. The widespread and often indiscriminate use of antibiotics in the treatmen ...
inducing principle of desoxyribonucleic directed mutation in colon
... FOR THE GENERAL BIOCHEMISTRY OF HEREDITY ANDRI~ BOIVIN Mutations occur spontaneously in bacteria as they do in higher organisms, animal and plant. It is possible, at least in certain cases, to increase the frequency of these mutations by various physical agents (X-rays, etc.) or by chemical ones. In ...
... FOR THE GENERAL BIOCHEMISTRY OF HEREDITY ANDRI~ BOIVIN Mutations occur spontaneously in bacteria as they do in higher organisms, animal and plant. It is possible, at least in certain cases, to increase the frequency of these mutations by various physical agents (X-rays, etc.) or by chemical ones. In ...
Brock Biology of Microorganisms, 11e (Madigan/Martinko)
... A) Heliothrix B) Rhodobacter C) Halorhodospira D) Chloroflexus Answer: D 30) Organisms which use only compounds with a single carbon atom for growth are called methylotrophs. Answer: TRUE 31) All methylotrophs are also methanotrophs. Answer: FALSE 32) Nitrifying bacteria develop particularly well in ...
... A) Heliothrix B) Rhodobacter C) Halorhodospira D) Chloroflexus Answer: D 30) Organisms which use only compounds with a single carbon atom for growth are called methylotrophs. Answer: TRUE 31) All methylotrophs are also methanotrophs. Answer: FALSE 32) Nitrifying bacteria develop particularly well in ...
2008 Program
... Knockout of cls2 in Staphylococcus aureus reveals a selective role of this gene in the conversion of membrane phosphatidylglycerol to cardiolipin during transition of the bacteria from logarithmic to stationary phase ...
... Knockout of cls2 in Staphylococcus aureus reveals a selective role of this gene in the conversion of membrane phosphatidylglycerol to cardiolipin during transition of the bacteria from logarithmic to stationary phase ...
Features of biofilms
... • HMW mucin (>1000 kD) called MUC 5 B and a LMW MUC 7 • MUC 5 B selectively forms heterotropic complexes with many salivary proteins and incorporates them into the acquired pellicle (Iontcheva 2000) . It attracts S.sanguis, S.gordonii, E.corrodens, S.aureus, P.aeruginosa. (Cohen 1989) ...
... • HMW mucin (>1000 kD) called MUC 5 B and a LMW MUC 7 • MUC 5 B selectively forms heterotropic complexes with many salivary proteins and incorporates them into the acquired pellicle (Iontcheva 2000) . It attracts S.sanguis, S.gordonii, E.corrodens, S.aureus, P.aeruginosa. (Cohen 1989) ...
Significance of biocide usage and antimicrobial resistance in
... When assessing the significance of antimicrobial resistance it is important to bear in mind that the term ‘resistance’ is a relative word. The microbicidal action of biocides (as opposed to antibiotics) results from their interaction with a number of distinct biochemical targets on or in the cell. S ...
... When assessing the significance of antimicrobial resistance it is important to bear in mind that the term ‘resistance’ is a relative word. The microbicidal action of biocides (as opposed to antibiotics) results from their interaction with a number of distinct biochemical targets on or in the cell. S ...
Orally Used Aminoglycosides
... o The antibiotics in this case selectively and irreversibly inhibit the enzymes that process the developing peptidoglycan layer. o Amide bonds are formed between the free –COOH of the lactic moieties of the N-acetylmuranic acid and a series of peptides of which L-Ala-D-GluL-Lys_D-Ala is typical. o T ...
... o The antibiotics in this case selectively and irreversibly inhibit the enzymes that process the developing peptidoglycan layer. o Amide bonds are formed between the free –COOH of the lactic moieties of the N-acetylmuranic acid and a series of peptides of which L-Ala-D-GluL-Lys_D-Ala is typical. o T ...
food and industrial microbiology
... also. It is because of these reasons various food products like malt extracts, peptone, tryptone, tomato juice, sugar and starch are incorporated in microbial media. The inability to utilize a major component of the food material will limit its growth and put it at a competitive disadvantage compare ...
... also. It is because of these reasons various food products like malt extracts, peptone, tryptone, tomato juice, sugar and starch are incorporated in microbial media. The inability to utilize a major component of the food material will limit its growth and put it at a competitive disadvantage compare ...
A. The UM Bloodborne Pathogens Exposure
... Source individual: Any individual, living or dead, whose blood or other potentially infectious materials may be a source of occupational exposure to the employee. Sterilize: The use of a physical or chemical procedure to destroy all microbial life including highly resistant bacterial endospores. Uni ...
... Source individual: Any individual, living or dead, whose blood or other potentially infectious materials may be a source of occupational exposure to the employee. Sterilize: The use of a physical or chemical procedure to destroy all microbial life including highly resistant bacterial endospores. Uni ...
1 - ScienceA2Z.com
... Endospores show no detectable metabolism and can survive extreme physical and chemical stresses, such as high levels of UV light, gamma radiation, detergents, disinfectants, heat, pressure and desiccation. In this dormant state, these organisms may remain viable for millions of years, and endospores ...
... Endospores show no detectable metabolism and can survive extreme physical and chemical stresses, such as high levels of UV light, gamma radiation, detergents, disinfectants, heat, pressure and desiccation. In this dormant state, these organisms may remain viable for millions of years, and endospores ...
Bacteria and Viruses
... be seen surround you? These organisms, called bacteria, even live inside your body. Bacteria (singular, bacterium) are microscopic prokaryotes. You might recall that a prokaryote is a unicellular organism that does not have a nucleus or other membrane-bound organelles. Bacteria live in almost every ...
... be seen surround you? These organisms, called bacteria, even live inside your body. Bacteria (singular, bacterium) are microscopic prokaryotes. You might recall that a prokaryote is a unicellular organism that does not have a nucleus or other membrane-bound organelles. Bacteria live in almost every ...
Disinfectant
Disinfectants are antimicrobial agents that are applied to non-living objects to destroy microorganisms that are living on the objects. Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores; it is less effective than sterilization, which is an extreme physical and/or chemical process that kills all types of life. Disinfectants are different from other antimicrobial agents such as antibiotics, which destroy microorganisms within the body, and antiseptics, which destroy microorganisms on living tissue. Disinfectants are also different from biocides — the latter are intended to destroy all forms of life, not just microorganisms.Disinfectants work by destroying the cell wall of microbes or interfering with the metabolism.Sanitizers are substances that simultaneously clean and disinfect. Disinfectants are frequently used in hospitals, dental surgeries, kitchens, and bathrooms to kill infectious organisms.Bacterial endospores are most resistant to disinfectants, but some viruses and bacteria also possess some tolerance.In wastewater treatment, a disinfection step with chlorine, ultra-violet (UV) radiation or ozonation can be included as tertiary treatment to remove pathogens from wastewater, for example if it is to be reused to irrigate golf courses. An alternative term used in the sanitation sector for disinfection of waste streams, sewage sludge or fecal sludge is sanitisation or sanitization.