Periodontitis is a chronic infectious disease‚ triggered by the host immune response to an array of periodontal biofilm-associated microorganisms‚ which ultimately leads to the inflammation of the tissues supporting the teeth. The initial host response to bacterial infection is a local inflammatory reaction that activates the innate immune system. An imbalance between biofilms and immune system results in over expression of an array of pro-inflammatory cytokines‚ propagation of inflammation through
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littoral zone of the lake and over there we found abundant Bladderworts (Utricularia vulgaris)‚ phytoplanktons and leaf litter from riparian vegetations- all of which weren’t found in the Gombak river. The only producers we found in the river were the biofilms (algae) layered on rocks. Other than that‚ the invertebrate predators found in both ecosystems also differ. We found plenty of water bugs (Hemiptera) and crayfish in the river and dragonflies and leeches in the lake. One vertebrate predator we found
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problem just like me. Glucansucrase is an enzyme used by bacteria in our human mouths to produce long sticky biofilm chains to stick teeth and cause tooth decay1. From the Protein Data Bank‚ I know that the bacteria use the Glucansucrase to build long‚ sticky chains of sugars called glucans. These glucans glue the bacteria to the surfaces of the teeth and form a biofilm which is difficult to remove2. Glucansucrase has two reactions2. Firstly‚ the enzyme breaks sucrose into glucose
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Chapter 6 Microbial Growth 1 Growth • increase in cellular constituents that may result in: – increase in cell number • e.g.‚ when microorganisms reproduce by budding or binary fission – increase in cell size • e.g.‚ coenocytic microorganisms have nuclear divisions that are not accompanied by cell divisions • microbiologists usually study population growth rather than growth of individual cells 2 The Growth Curve • observed when microorganisms are cultivated in batch
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Clostridium Difficile Hemant Sule BIO 2110-Section 303 December 04‚ 2011 Clostridium Difficile is known to be a notorious infection to cause foul smelling diarrhea‚ very well known to almost every healthcare worker. It is one of the most difficult infections to treat in the current healthcare industry‚ and most often related to the use of antibiotics during healthcare treatment. Clostridium Difficile is a spore-forming‚ gram-positive anaerobic toxin-producing bacterium that is a “common”
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This peptide has the ability to prevent biofilms(this is when a group of bacteria merge‚ in order to protect themselves.) Researchers on this discovery‚ critically studied the VK25 and later rearranged the amino acids that form it; to create a stronger synthetic peptide which they named DRGN-1
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` Study Guide for Exam 1 Chapter 1: 1. What is a “microbe”? What groups of organisms are included in this category? Microbes (microorganisms) are minute living things that individually are too small to be seen with the unaided eye the group includes bacteria‚ fungi‚ protozoa‚ and microscopic algae‚ viruses Only minority of microorganisms are pathogenic(disease-producing) 2. What are some of the benefits provided by microbes? Decompose organic waste‚ producers in the ecosystem
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Exopolymeric substances are required for Calcium carbonate precipitation Abstract: Introduction: Different minerals precipitation by microbes is a common phenomenon‚ and carbonates are most common mineral formed. Many micro-organisms are having the ability in undergoing the process of mineralization‚ although different minerals have been precipitated by microbes which include carbonates‚ sulphates‚ silicates etc [1]. Amongst all these‚ carbonates are the most common minerals formed. Carbonate precipitation
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Acinetobacter baumannii: A Hospital’s Nightmare Emily Whittaker Microbiology Dr. Cuccio May 29‚ 2014 Introduction From the beginning of time‚ our world and the knowledge that surrounds us has steamed from curiosity. Ever since Leeuwenhoek‚ our society over the years has developed a vast understanding of microbiology and the role they play in the environment. Microbes are found all around us and are involved in all parts of our lives and necessary for survival. In
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Introduction: Dependence of Methane Production on Ambient Temperature in Bovine Waste The purpose of this experiment was to determine the effect of temperature in bovine waste on the amount of methane evolved. The hypothesis stated that the bovine waste heated to 48.9oC would produce the most methane. The manipulated variable in the experiment was the temperature of bovine waste. The responding variable was the amount of methane evolved from the waste. The experiment can be applied to real world
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