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Thermosensation01:43

Thermosensation

Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...

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Photoacoustic Cystography
09:49

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Published on: June 11, 2013

Single-cell photoacoustic thermometry.

Liang Gao1, Lidai Wang, Chiye Li

  • 1Washington University in St. Louis, Department of Biomedical Engineering, One Brookings Drive, St. Louis, MO 63130, USA.

Journal of Biomedical Optics
|February 5, 2013
PubMed
Summary

A new photoacoustic thermometry method images cells and senses temperature simultaneously. This technique offers high resolution without needing special biosensors, making single-cell temperature measurement more accessible for biological research.

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Area of Science:

  • Biomedical Engineering
  • Cell Biology
  • Optical Imaging

Background:

  • Accurate temperature measurement at the cellular level is crucial for understanding biological processes.
  • Existing methods for single-cell thermometry often require specialized, custom-developed biosensors, limiting their widespread adoption.

Purpose of the Study:

  • To introduce a novel photoacoustic thermometric method for simultaneous cell imaging and temperature sensing.
  • To demonstrate the potential of this method for routine, accessible single-cell thermometry.

Main Methods:

  • Development of a photoacoustic thermometric technique.
  • Implementation of a three-seconds-per-frame imaging speed.
  • Validation through a photo-thermal cell heating experiment.

Main Results:

  • Simultaneous imaging and temperature sensing of cells achieved.
  • A temperature resolution of 0.2°C was obtained.
  • The method does not require custom-developed temperature-sensitive biosensors.

Conclusions:

  • The developed photoacoustic thermometric method provides a non-invasive and efficient approach for single-cell temperature measurement.
  • Its independence from custom biosensors significantly enhances its accessibility for the broader biological research community.
  • This technique has the potential to become a standard laboratory tool for cellular thermometry.