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A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
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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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Brain transient receptor potential channels and stroke.

Eric Zhang1, Ping Liao1,2

  • 1Calcium Signalling Laboratory, National Neuroscience Institute, Singapore.

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Transient receptor potential (TRP) channels are involved in brain disorders like stroke. Understanding their role in different brain cells may lead to new stroke treatments.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Pathophysiology

Background:

  • Transient receptor potential (TRP) channels are increasingly recognized for their role in central nervous system (CNS) disorders.
  • TRP channels are expressed across diverse brain cell types, including neurons, glia, and vascular cells.

Purpose of the Study:

  • To review the expression and function of TRP channels in various brain cell types.
  • To summarize the current understanding of TRP channel involvement in stroke pathophysiology.

Main Methods:

  • Literature review of studies on TRP channel expression and function in the brain.
  • Analysis of TRP channel roles in ischemia-induced cell death and stroke.

Main Results:

  • Specific TRP channels (TRPC3/4/6, TRPM2/4/7, TRPV1/3/4) are implicated in stroke-related cell death.
  • TRP channels in non-neuronal brain cells are less understood but potentially significant.

Conclusions:

  • TRP channels are critical players in CNS disorders, particularly stroke.
  • Further research into TRP channels, especially in non-neuronal cells, is needed for novel stroke therapeutics.
  • Elucidating TRP channel functions in stroke could improve patient outcomes in an aging population.