Sentences with phrase «as a biofilm in»

Certain bacterial species, referred to as «secondary colonizers,» secrete a self - produced matrix referred to as a biofilm in which multiple bacterial species reside in structured community.»

Not exact matches

The finding could explain how some bacteria, such as Pseudomonas aeruginosa (P. aeruginosa), are able to thrive in oxygen - poor environments like biofilms and resist antibiotics.

That bacterial biofilms exhibit different behavior in space versus on Earth is critical information as NASA strives to keep astronauts healthy and safe during future long - duration space missions.

«Biofilms were rampant on the Mir space station and continue to be a challenge on the International Space Station, but we still don't really know what role gravity plays in their growth and development,» said Cynthia Collins, Ph.D., principal investigator for the study and assistant professor in the Department of Chemical and Biological Engineering at the Center for Biotechnology and Interdisciplinary Studies at the Rensselaer Polytechnic Institute in Troy, N.Y. «Before we start sending astronauts to Mars or embarking on other long - term spaceflight missions, we need to be as certain as possible that we have eliminated or significantly reduced the risk that biofilms pose to the human crew and their equipmentBiofilms were rampant on the Mir space station and continue to be a challenge on the International Space Station, but we still don't really know what role gravity plays in their growth and development,» said Cynthia Collins, Ph.D., principal investigator for the study and assistant professor in the Department of Chemical and Biological Engineering at the Center for Biotechnology and Interdisciplinary Studies at the Rensselaer Polytechnic Institute in Troy, N.Y. «Before we start sending astronauts to Mars or embarking on other long - term spaceflight missions, we need to be as certain as possible that we have eliminated or significantly reduced the risk that biofilms pose to the human crew and their equipmentbiofilms pose to the human crew and their equipment.»

As these resilient microbes thrive, they can group together on a surface — like a wound or a medical device — and encase themselves in a slimy protective layer known as a biofilAs these resilient microbes thrive, they can group together on a surface — like a wound or a medical device — and encase themselves in a slimy protective layer known as a biofilas a biofilm.

Microorganisms like bacteria often are found attached to surfaces living in communities known as biofilms.

Bacteria living in a biofilm can be 10 to 1,000 times as hard to kill as their free - floating counterparts.

Colonies of bacteria called biofilms live longer in Mars - like waters — especially if they were dried out first, as they would be after hitching a ride through space

In earlier work, these investigators showed — as numerous others had done — that the messenger molecule, cyclic - di - GMP (c - di - GMP) promotes biofilm formation when such surfaces are present, said principal investigator Vincent T. Lee, Associate Professor, Department of Cell Biology and Molecular Genetics, University of Maryland, College Park.

The researchers» report appears in the journal ACS Synthetic Biology and describes development of this new type of E. coli that can even kill off slimy groups of bacteria called biofilms that are responsible for many hard - to - treat infections, such as those that take hold in the lungs, the bladder and on implanted medical devices.

First author Minyoung Kevin Kim, a graduate student in Princeton's Department of Chemistry, built experimental devices that mimicked common environments in which bacteria are subjected to the flow of liquids such as wastewater or bodily fluids: the interior surfaces of pipes, the crevices found in the lining of the intestines, and surfaces coated with biofilms, among others.

Instead, they scupper what is known as quorum sensing, i.e, a system used by bacteria to communicate with the help of messenger substances that results in the formation of biofilms.

The finding could help doctors tackle infections in which biofilms are common, such as cystic fibrosis

Dental plaque may be the best - known example of a biofilm, but these slimy aggregates of bacteria also play major roles in such chronic infections as those in the urinary tract or in the lungs in cystic fibrosis patients.

As a result, the activities of the antioxidant enzymes glutathione peroxidase and catalase were restored, ROS levels decreased, and the bacterial biofilm disintegrated in the wound — all of which resulted in the development of healthier wound tissue and led to wound healing.

Subsequently, the investigators found that the biofilm was forming more quickly and to a greater degree in these ArsS - deficient strains, as compared to other mutants.

«But the organisms that we detected as abundant in these biofilms appear to have characteristics that could be of interest because they are related to some bacteria that are opportunistic pathogens that could pose a threat, especially to immunocompromised hospital patients»

Live (green) versus dead (red) bacteria «illustrate the effective survival of bacteria growing as attached biofilms, with beauty visible in their growth,» Joubert writes.

Bassler says that in some instances — such as in dental biofilms, in which some 600 species may be growing at a time — AI - 2 is necessary for collective or cooperative behavior.

Each year roughly 500,000 people in the United States die of biofilm - associated infections, nearly as many as those who die of cancer.

Since biofilms in chronic wounds are built up by multiple species of bacteria, it is important to attack as many as possible at the same time, Wolcott says.

Here, there aren't as many bacteria in thick biofilms, and viruses swarm the microbes (as seen in this image from an electron microscope), picking them off one by one.

Opportunistic premise plumbing pathogens, such as the bacteria that causes Legionnaire's disease, Legionella pneumophila, can thrive in low - nutrient conditions and grow as biofilms on the inner surfaces of pipes.

In many cases, these secreted compounds may enable a biofilm, as a collective, to degrade complex polymers — including host tissues — that otherwise would be inaccessible [9, 12].

Modern biofilms grown on microscope slides in pond water were allowed to desiccate for 7 days and 2.5 milligrams were pressed into a KBr pellet as above.

Numerous studies on postmortem brains have found evidence of infection, such as biofilms, in the same regions as Alzheimer's neurodegeneration — namely, the hippocampus and temporal lobe (1).

Biocellion is being used to model a variety of biological system behaviors, such as biofilm formation and wrinkling, microbial growth dynamics in complex soil structure, brain tumor growth and invasion, formation of complex bacterial colonies, and changes in blood vessels and skin cells.

Another focus in the lab is exploring the use of engineered bacterial biofilms as materials for the selective removal or purification of various soluble components, as might be relevant for water decontamination.

In addition, we compared the relative biofilm capability of the representative strains as indicators of their survival and persistence in the environment and K7 showed enhanced biofilm forming capabilities (p = 0.004In addition, we compared the relative biofilm capability of the representative strains as indicators of their survival and persistence in the environment and K7 showed enhanced biofilm forming capabilities (p = 0.004in the environment and K7 showed enhanced biofilm forming capabilities (p = 0.004).

Eating sugary and starchy foods, drinking tea, coffee, and soda leads to an altered pH in the mouth - > certain strains of bacteria to proliferate - > bacteria form biofilms to protect themselves from mechanical removal such as is done through the flow of saliva or brushing teeth - > biofilms cause a buildup of plaque on the teeth from bacteria in the mouth.

Because of the number of relapses in both bacterial and yeast issues, alternative treatments as these biofilm agents provide are needed to complete eradication.

They have bacteria in their mouth that form biofilms of tartar and plaque, just as we do.

The therapeutic benefits of Zymox Brushless products include restoring the oral balance to replenish what is missing in saliva, inhibiting the odor - causing bacteria, as well as the removal of plaque biofilm.