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Related Concept Videos

Two-Dimensional Microscopy in Microbiology01:29

Two-Dimensional Microscopy in Microbiology

Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
Three-Dimensional Microscopy in Microbiology01:28

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...
Microbial Morphologies01:29

Microbial Morphologies

Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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Microfluidic Tools for Probing Fungal-Microbial Interactions at the Cellular Level
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Published on: June 23, 2022

Frontiers in microbial nanoscopy.

David Alsteens1, Vincent Dupres, Guillaume Andre

  • 1Institute of Condensed Matter & Nanosciences, Université catholique de Louvain, Croix du Sud 2/18, B-1348 Louvain-la-Neuve, Belgium.

Nanomedicine (London, England)
|March 10, 2011
PubMed
Summary
This summary is machine-generated.

Atomic force microscopy (AFM) advances nanomedicine by enabling high-resolution imaging and mechanical analysis of microbial pathogens. This powerful tool aids in understanding drug interactions and developing novel antimicrobial strategies.

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Area of Science:

  • Nanomedicine
  • Microbiology
  • Biophysics

Background:

  • Nanomedicine requires advanced nanoscale imaging and manipulation tools.
  • Microbial pathogens are key targets for nanomedicine interventions.
  • Atomic force microscopy (AFM) offers high-resolution capabilities for biological analysis.

Purpose of the Study:

  • To highlight the utility of AFM techniques in nanomedicine for studying microbial pathogens.
  • To explain how AFM can elucidate molecular mechanisms of microbial interactions and drug responses.

Main Methods:

  • AFM imaging for observing microbial cell walls in solution at high resolution.
  • Monitoring cell wall remodeling upon drug interaction using AFM.
  • Single-molecule force spectroscopy to analyze cell wall constituents' mechanics and interactions.

Main Results:

  • AFM enables detailed visualization of microbial cell wall structure and dynamics.
  • The study demonstrates AFM's capability to monitor drug-induced changes in microbial cell walls.
  • AFM provides insights into molecular interactions, cell adhesion (nanoadhesome), and mechanosensing (nanosensosome).

Conclusions:

  • AFM is a crucial tool for advancing nanomedicine research on microbial pathogens.
  • AFM facilitates understanding of microbe-drug and microbe-host interactions at the molecular level.
  • AFM-based nanoscopy holds significant potential for developing new antimicrobial strategies.