Biofilm

Introduction Microbes are essential to everyday life. Going from the basic food we eat to biogeochemical cycles, if we didn 't have biogeochemical cycles we would no longer have any of the resources that we have now; for example, there is plenty of nitrogen in the atmosphere but it 's all not available until it has been fixed, and that is when the microbes come in and changes the nitrogen in a way that is usable. Humans come in contact with microbes every day there is never a time there are…

The bacteria are then fed upon by giant clams, mussels, polychaete worms and other invertebrates forming the base of the food chain. (2) As the bacteria multiply they create a slimy substance that helps them stick to the rocks called biofilm (or biomat). This biofilm goes through succession however they are on much shorter…

Results The results obtained were statistically analyzed using the Fishers exact test. Table 1: Comparison of microbial growth between different groups Sodium Hypochloride Total Fishers exact test Endovac Laser Control p-value No Growth 5(50.0%) 8(80.0%) 0 15(37.5%) <0.001* <103 5(50.0%) 2(20.0%) 0 7(17.5%) 103 – 108 0 0 0 8(20.0%) >108 0 0 10(100.0%) 10(25.0%) Total 10 10 10 40(100.0%) *p<0.05 statistically significant p>0.05 non significant, NS Amongst the 10…

Based on the laboratory tests provided, it can be determined that the unknown organism can be identified as Pseudomonas aeruginosa (P. aeruginosa). This organism is an opportunistic pathogen that can infect non-mammalian, plants, and humans. P. aeruginosa belongs to the bacterial family Pseudomonadaceae, and is a gram-negative rod that approximately measures 0.5 to 0.8 µm by 1.5 to 3.0 µm. It can normally be found in water and soil. Its single polar flagellum makes it motile, and it is known to…

found colonizing through the ETT or around the cuff, combined with the microorganisms that lie within the polyvinylchloride surface of the ETT forms a biofilm, creating an increase the risk of pathogens being detached from the endotracheal tube and disseminate into the lungs during mechanical ventilation. Bacteria growth on the surface of the ETT biofilm was said to have found pathogens in 95% of patients that undergo mechanical ventilation for more than 24 hours (Mietto MD et.al,…

control expression of a virulent phenotype according to environmental conditions is regulated by the agr QS pathway [1]. Many of the factors involved in virulence, such as exotoxin production, as well as products associated with the formation of biofilm have been shown to be controlled by the agr system [2, pdf 575], see table 1. In vitro studies…

rotation or when such contact is open. Consequently, this unusual alignment cause the teeth of one arch not to have a nice contact area between them, fact that may predispose an individual to be more susceptible to dental biofilm accumulation and calculus formation. Eventually, such biofilm formation attract pathogenic bacterias that affect negatively the tissues of the periodontium causing any form of periodontal disease, either gingivitis and/or periodontitis. Some of the negative effects,…

Mtb is classified as a Gram-positive bacteria, and is one of the few bacteria that can be cultured in the laboratory5. Its cell surface is partly composed of various virulence lipids, such as phthiocerol dimycocerosates (PDIMs) and phenolic glycolipids (PGLs). and mycolic acid3. Mtb, like many other bacteria, is capable of sensing and responding to their surrounding environment. It does so via the use of two-component systems, one of which is called PhoPR two-component system6. In order for Mtb…

Bio-filtration Bio-filter is considered the most important and efficient separation process that is used in the elimination of organic pollutants from water sources. The article focus on the biological processes that are used in bio-filtration and determination of their effectiveness (Acero, 2009). Full-scale laboratory applications of wastewater treatment and bio-filter are discussed and compared with their pollutant removal ability. Filtration is defined as necessary treatment process used…

Proteus mirabilis and other bacteria easily travel along the outer and/or inner surface of the catheter, usually within 2-10 days of insertion (Davey, 2015). Shortly after this period, the bacteria create a biofilm, which is a living layer of cells, on the catheter 's outer surface. This biofilm in turn produces a 'sticky ' substance known as glycocalyx (a glycoprotein-polysaccharide covering that surrounds the cell membranes of some bacteria), which sticks to the surface of the catheter, often…