نتایج جستجو برای: bacterial biofilm

تعداد نتایج: 222381  

Introduction: Traditional medicines cannot adequately reach the target tissues, due to their large size; therefore, the attention of researchers has been drawn to the use of nanomedicines. In fact, the use of biological active compounds loaded on the surface of nanoparticles can be effective the in the promotion of their antimicrobial activity. In the earlier studies, it was demonstrated that b...

A Akhavan Sepahi, L Jabalameli, M. R Razavi, S Hosseinkhani,

Coastal region of Chah Bahar port, Sea of Oman, was screened for the presence of bioluminescence bacteria for the first time. Water samples were taken from surface and subsurface layers and immediately spread on nutrient seawater complete (SWC) agar. Luminous colonies were observed after an overnight incubation at 25°C. Among twenty luminous isolates, four of them were selected for preliminary ...

Journal: :Journal of food protection 2012
Rong Wang James L Bono Norasak Kalchayanand Steven Shackelford Dayna M Harhay

Shiga toxin-producing Escherichia coli (STEC) strains are important foodborne pathogens. Among these, E. coli O157:H7 is the most frequently isolated STEC serotype responsible for foodborne diseases. However, the non-O157 serotypes have been associated with serious outbreaks and sporadic diseases as well. It has been shown that various STEC serotypes are capable of forming biofilms on differen...

Journal: :Vaccine 2011
Eric J Chaney Cac T Nguyen Stephen A Boppart

Otitis media and other middle ear diseases are extremely common among all children worldwide. Chronic otitis media is strongly associated with the presence of a bacterial middle ear biofilm, which if left untreated, may result in hearing loss or delays in the development of speech and language. Many animal models and methods used to study the progression of various middle ear diseases exist. Ho...

2016
Laura M. Coughlan Paul D. Cotter Colin Hill Avelino Alvarez-Ordóñez

Biofilms are microbial communities characterized by their adhesion to solid surfaces and the production of a matrix of exopolymeric substances, consisting of polysaccharides, proteins, DNA and lipids, which surround the microorganisms lending structural integrity and a unique biochemical profile to the biofilm. Biofilm formation enhances the ability of the producer/s to persist in a given envir...

Journal: :iranian journal of basic medical sciences 0
ali salehzadeh department of biology, rasht branch, islamic azad university, rasht, iran hojjatolah zamani department of biology, faculty of science, university of guilan, rasht, iran maedeh keshtkar langeroudi department of biology, rasht branch, islamic azad university, rasht, iran amir mirzaie young researchers and elite club, east tehran branch, islamic azad university, tehran, iran

objective(s): staphylococcus aureus is an important bacterial pathogen responsible for a variety numbers of nosocomial and community acquired infections. biofilm formation is regarded as an important factor in the establishment of s. aureus infection. the contribution of the genetic background of s. aureus to biofilm formation is poorly understood. the aim of the present work was to genotype s....

2013
Ramachandranpillai Rajagopal Govindapillai Krishnan Nair Mangattumuruppel Mini Leo Joseph Mapranath Raghavan Saseendranath Koshy John

BACKGROUND AND OBJECTIVES Biofilms are structural communities of bacterial cells enshrined in a self produced polymeric matrix. The studies on biofilm formation of Pasteurella multocida have become imperative since it is a respiratory pathogen and its biofilm mode could possibly be one of its virulence factors for survival inside a host. The present study describes a biofilm assay for P. multoc...

A Akhavan Sepahi L Jabalameli, M. R Razavi S Hosseinkhani

Coastal region of Chah Bahar port, Sea of Oman, was screened for the presence of bioluminescence bacteria for the first time. Water samples were taken from surface and subsurface layers and immediately spread on nutrient seawater complete (SWC) agar. Luminous colonies were observed after an overnight incubation at 25°C. Among twenty luminous isolates, four of them were selected for preliminary ...

In this study, a strain of lactic acid bacteria Streptococcus salivarius was studied for its capacity to remove hexavalent chromium (Cr (VI)) from a liquid medium and to form biofilm. Both properties are useful for using the strain in bioremediation of metal-contaminated effluents. For biofilm formation capacity, three methods were used: the tube method (TM), the Congo red agar method (CRA) and...

Journal: :Journal of wound care 2014
D G Metcalf P G Bowler J Hurlow

Recognition of the existence of biofilm in chronic wounds is increasing among wound care practitioners, and a growing body of evidence indicates that biofilm contributes significantly to wound recalcitrance. While clinical guidelines regarding the involvement of biofilm in human bacterial infections have been proposed, there remains uncertainty and lack of guidance towards biofilm presence in w...

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