Chemically-triggered

Describing a process, event, or response initiated or caused by a specific chemical substance or reaction. This often involves the interaction of a chemical with a receptor, enzyme, or other biological molecule, leading to a cascade of downstream effects. These effects can range from simple physical changes to complex physiological responses. The trigger substance can be endogenous (produced within the organism) or exogenous (originating from outside). Chemical triggers are central to numerous biological processes, from neuronal signaling to immune responses. Furthermore, the term can be used in a less literal, figurative way to describe anything influenced by chemicals or the impact they may have on the behaviour of biological processes and environments.

Chemically-triggered meaning with examples

• The release of neurotransmitters at the synapse is a classic example of a chemically-triggered event. A presynaptic neuron releases chemicals, which then bind to receptors on a postsynaptic neuron, initiating a signal.
• Severe allergic reactions are often the result of a chemically-triggered immune response. The body perceives an allergen, which prompts the release of histamines and other inflammatory chemicals.
• Many medications function by interacting with receptors in a chemically-triggered way. For example, beta-blockers are designed to attach to specific receptors and interrupt a process in the body that can cause the heart rate to increase.
• Pollution in the environment can lead to various effects that are chemically-triggered. Certain chemicals can contaminate and disrupt biological processes that cause lasting damage to the ecosystem.