The role of transient receptor potential channels in respiratory symptoms and pathophysiology

M Allen McAlexander1, Thomas Taylor-Clark

  • 1Respiratory Discovery Biology, GlaxoSmithKline Pharmaceuticals, King of Prussia, PA, USA. michael.a.mcalexander@gsk.com

Insights

Transient Receptor Potential (TRP) channels in the respiratory tract link irritant exposure and inflammation to airway sensitivity and airflow limitation. Research highlights their roles in both airway sensory nerves and non-excitable cells.

Area of Science:

  • Respiratory physiology
  • Ion channel research
  • Molecular biology

Background:

  • Transient Receptor Potential (TRP) channels are a diverse superfamily of ion channels.
  • TRP channels are increasingly recognized for their presence and function within the respiratory system.

Purpose of the Study:

  • To review the current understanding of TRP channel roles in the respiratory tract.
  • To emphasize the involvement of TRP channels in airway sensory nerves and non-excitable cells.

Main Methods:

  • Pharmacological studies
  • Genetic research
  • Literature review

Main Results:

  • TRP channels are widely distributed in the respiratory tract.
  • These channels connect noxious stimuli and inflammation to airway hyperresponsiveness, remodeling, and airflow obstruction.
  • TRP channels play significant roles in both airway sensory neurons and non-neuronal cells.

Conclusions:

  • TRP channels are critical mediators of respiratory responses to irritants and inflammation.
  • Further research into TRP channel function is essential for understanding and treating respiratory diseases.

Related Concept Videos

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...
Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more like...