Просмотр исходного текста страницы Gene-Expression-Metabolism-Cysb-Formation-Absence-Acid-g

Enzymatic detachment of Staphylococcus epidermidis biofilms. The gram-positive bacterium Staphylococcus epidermidis is the most common cause of infections associated with catheters and other indwelling medical devices. S. epidermidis produces an extracellular slime that enables it to form adherent biofilms on plastic surfaces. We found that a biofilm-releasing enzyme produced by the gram-negative periodontal pathogen Actinobacillus actinomycetemcomitans rapidly and efficiently removed S. epidermidis biofilms from plastic surfaces.<br /><br /> The enzyme worked by releasing extracellular slime from S. epidermidis cells. Precoating surfaces with the enzyme prevented S. epidermidis biofilm formation. Our findings demonstrate that biofilm-releasing enzymes can exhibit broad-spectrum activity and that these enzymes may be useful as antibiofilm Biofilm formation of Streptococcus equi ssp. zooepidemicus and comparative proteomic analysis of biofilm and planktonic cells. Streptococcus equi ssp.<br /><br /> zooepidemicus (SEZ) is responsible for a wide variety of is essential for pathogenesis, and the ability to resist antibiotic treatment results in difficult-to-treat and persistent infections. However, the ability of SEZ to form biofilms is unclear. Furthermore, the mechanisms underlying SEZ biofilm formation and their attributes are poorly understood. In this study, scanning electron microscopy (SEM) demonstrated that SEZ strain ATCC35246 formed biofilms comprising a thick, heterogeneous layer with clumps on the coverslips when incubated for 24 h. In addition, we used a two-dimensional gel electrophoresis (2-DE) based approach to characterize differentially expressed protein in SEZ biofilms compared with their planktonic counterparts. The results revealed the existence of 24 protein spots of varying intensities, 13 of which were upregulated and 11 were downregulated in the SEZ biofilm compared with the planktonic controls. [https://www.metooo.com/u/65d2c2551937cf5aa630400e Purchase today] of proteins expressed during biofilm formation were contribute to our understanding of the SEZ biofilm lifestyle, which may lead to more effective measures to control persistent SEZ infections.<br /><br /> Assessment of biofilm formation among clinical isolates of Acinetobacter baumannii in burn wounds in the west of Iran. [https://community.windy.com/user/stitchbridge27 https://community.windy.com/user/stitchbridge27] by A. baumannii is one of the predominant cause of mortality worldwide. The present investigation aimed at determination of antimicrobial resistance profile and expression of the biofilm-related genes in A. baumannii isolated from hospitalized patients with burn wound infection in Kermanshah hospitals. Sixty four isolates of A. baumannii were recovered from burn wound of hospitalized patients at hospitals in Kermanshah.<br /><br /> [https://minecraftcommand.science/profile/angleraven11 https://minecraftcommand.science/profile/angleraven11] (AST) was performed. Biofilm formation was measured and antibiotic resistance was compared between before and after of biofilm formation. The polymerase chain reaction (PCR) and Real-Time PCR were performed to detect of abaI and pgaD genes. The biofilm producer isolates and the most resistant isolates were exposed to ozone gas .More than 70% strains Ticarcillin-clavulanic acid and 50% isolates were resistant to Imipenem. Thirty one (48%) isolates were biofilm producer. The pgaD and abaI genes were positive in 29 (45%) and 9 (14%) isolates, respectively.<br /><br /> Real time PCR demonstrated that the copy numbers of the pgaD and abaI genes after biofilm formation were increased. After exposure to ozone, biofilm formation reduced in all very strong biofilm producing isolates. Our results showed that after biofilm formation, an increased resistance was observed in most isolates. Also rising expression of abaI gene was associated with biofilm formation and an increase of antibiotic resistance. In the current study, both biofilm formation and antibiotic resistance were reduced after O3 exposure. The benzalkonium chloride resistant or sensitive phenotype of Listeria monocytogenes planktonic cells did not dictate the susceptibility of its biofilm Departamento dos Recursos Naturais, Ambiente e Território, Instituto Superior de Departamento dos Recursos Naturais, Ambiente e Território, Instituto Superior de Departamento dos Recursos Naturais, Ambiente e Território, Instituto Superior de The main goal of this work was to approach food industry conditions in the comparison of the susceptibility of biofilms of Listeria monocytogenes to the biocides benzalkonium chloride (BAC) and peracetic acid (PAA). Twelve isolates of L.<br /><br /> monocytogenes, including nine well characterized BAC resistant strains were used. Biofilms were produced on stainless steel coupons (SSC), at 11 °C simulating clean (nutrient limiting) or soiled (nutrient rich) growth conditions.