Bacterial Accumulation
Bacterial Accumulation - Related Videos
04:02
An Assay to Measure the Accumulation of a Fluorescent Antibiotic Probe in Bacterial Cells
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2025
This video demonstrates an assay to measure the accumulation of a fluorescent antibiotic probe in bacterial cells. Exposure to an efflux pump inhibitor disrupts the transmembrane proton gradient in bacterial cells, upon which a fluorophore-conjugated antibiotic is added. Inhibition of efflux pumps due to the disrupted proton gradient causes accumulation of the antibiotic inside the bacteria. Bacterial cells are lysed, and the fluorescence intensity is measured to confirm antibiotic accumulation.
01:27
Cost Accumulation and Flow
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2026
In manufacturing, production costs are accumulated and tracked to understand how resources are consumed and how they contribute to the final product. This process, known as cost accumulation, involves recording material, labor, and overhead costs and linking them to specific cost objects, such as individual products or production processes.Costs flow through inventory accounts in a sequence that mirrors the physical movement of goods. Initially, raw materials are recorded in the raw materials...
14:05
Imaging InlC Secretion to Investigate Cellular Infection by the Bacterial Pathogen Listeria monocytogenes
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Cited by 7 •
2013
Listeria monocytogenes is a Gram positive bacterial pathogen frequently used as a major model for the study of intracellular parasitism. Imaging late L. monocytogenes infection stages within the context of small-interfering RNA screens allows for the global study of cellular pathways required for bacterial infection of target host cells.
01:26
Assessing Bacterial Respiration in Response to Silver Nanoparticles
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2025
Begin with a slurry containing bacterial cells treated with silver nanoparticles suspended in an exopolysaccharide matrix.Add a phosphate buffer to the slurry to maintain a stable pH.Next, introduce a solution containing glucose and a soluble redox indicator, then incubate the mixture. The redox indicator acts as an electron acceptor.During incubation, glucose and the redox indicator enter metabolically active bacterial cells.The cells utilize glucose during respiration, generating...
02:28
Visualization of Single-Cell Bacterial Interactions
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2025
Source: Yarringto, K. D., et al. Kinetic Visualization of Single-Cell Interspecies Bacterial Interactions. J. Vis. Exp. (2020)This video demonstrates the preparation of a coculture system using motile and non-motile bacteria under an agarose pad for live-cell imaging. It shows how motile bacteria detect chemical attractants and invade non-motile colonies, revealing bacterial interactions.
FAQs
Several processes can raise bacterial burden at the same time. Cell division directly increases the population, while attachment to host tissue or implanted surfaces helps cells remain in place. Limited clearance further permits persistence, and structured communities can retain bacteria through extracellular materials. Considering these mechanisms together helps explain why accumulation may continue even when bacterial growth alone does not account for observed burden.
Extracellular materials can retain bacterial cells within a structured community and modify the conditions immediately around them. This organization changes accumulation from a simple increase in dispersed cells to a localized process shaped by retention and the surrounding environment. Examining this mechanism is relevant when studying bacteria associated with tissues, fluids, or implanted surfaces.
Accumulation provides a way to connect microbial burden with the host response. When clearance is limited, bacterial numbers can remain elevated, creating a measurable context for examining immune-cell recruitment and inflammation. Comparing bacterial burden with tissue injury can help investigators assess how microbial persistence relates to damage during infection, without treating accumulation and immune effects as separate phenomena.
Measurements should be interpreted in relation to the environment being studied, such as tissue, fluid, or a surface, and to the processes that may increase or remove cells. Linking measured bacterial burden with immune-cell recruitment, inflammation, tissue injury, or treatment response provides more informative analysis than considering the microbial measurement alone. This comparison can reveal how accumulation changes during infection.
These studies can examine antimicrobial activity and treatment response by tracking bacterial burden alongside relevant infection outcomes. A change in accumulation can be considered with tissue injury or inflammatory measures to place treatment effects in host context. This approach supports evaluation of whether an intervention is associated with altered microbial persistence, rather than focusing only on bacterial presence.
Tracking microbial burden is especially informative in studies of colonization, infection progression, and host mechanisms that control bacterial clearance. Researchers can use it as an anchor for examining immune-cell recruitment and inflammation, then relate those findings to tissue injury or treatment response. This makes accumulation a shared measure connecting microbial behavior, host defense, and disease-course analysis.