Drug Inhibition
Drug Inhibition - Related Videos
00:46
Feedback Inhibition
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2019
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell! Since enzymes help control the rate of reactions, their activity is regulated so that appropriate amounts of starting materials, intermediate metabolites, and products are maintained in the cell. Excessive build-up or depletion of...
08:11
Measuring Influenza Neuraminidase Inhibition Antibody Titers by Enzyme-linked Lectin Assay
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Cited by 54 •
2016
We describe the enzyme-linked lectin assay (ELLA) for measuring influenza neuraminidase (NA)-inhibition antibody titers in sera. The assay uses peanut agglutinin to quantify galactose residues that become accessible when NA removes sialic acid from fetuin-coated, 96-well plates.
01:30
Enzyme Inhibition
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2025
Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure. Competitive inhibitors occupy the active site of enzymes, making them unable to accommodate the substrate. However, sufficiently high...
02:29
Measuring Immune-Induced Inhibition of Seedling Growth
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2025
This video demonstrates the seedling growth inhibition assay in the Arabidopsis thaliana plant. The impact of increased concentration of immune peptide elicitor on seedling growth is determined.
09:48
Measuring Spinal Presynaptic Inhibition in Mice By Dorsal Root Potential Recording In Vivo
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Cited by 5 •
2014
GABAergic presynaptic inhibition is a powerful inhibitory mechanism in the spinal cord important for motor and sensory signal integration in spinal cord networks. Underlying primary afferent depolarization can be measured by recording of dorsal root potentials (DRP). Here we demonstrate a method of in vivo recording of DRP in mice.
FAQs
Distinguishing competitive, noncompetitive, and irreversible inhibition helps researchers interpret the nature of a compound’s interaction with its target. These categories organize observations about how target activity changes and whether the effect reflects a specific interaction pattern or a more lasting alteration. Making this distinction supports mechanism-of-action studies, potency assessment, and rational drug development.
The target class shapes the biological consequence researchers need to interpret. Enzyme-related inhibition is especially relevant to metabolism, while receptor, transporter, and ion-channel targets can be evaluated in relation to changes in downstream signaling or other target-linked activity. Separating these contexts helps connect a compound’s molecular interaction with its therapeutic or toxic effects.
Concentration-response behavior is central to interpreting drug inhibition. By examining how increasing compound concentrations change a biological process, researchers can estimate potency and compare responses among targets. Repeating this analysis across relevant targets also helps assess selectivity, which is important for distinguishing desired pharmacological effects from unintended consequences and for guiding later compound development.
A pharmacology study of inhibition typically connects the compound concentration, the target or biological process examined, and the resulting change in activity. Researchers use this relationship to characterize the inhibition mechanism, quantify potency, and evaluate selectivity. The resulting profile provides a structured basis for comparing compounds during drug discovery and considering dose optimization.
Drug inhibition can become important when one compound changes the activity of a target that another treatment also depends on. Characterizing the inhibitor’s potency and selectivity helps researchers predict possible drug interactions rather than viewing each compound in isolation. This information supports interpretation of combined pharmacological effects and contributes to the development of safer treatments.
The same inhibitory mechanism can contribute to either benefit or harm, depending on the biological process affected. Reducing an undesirable process may support a therapeutic effect, whereas interference with another target or downstream pathway may contribute to toxicity. Measuring target activity, potency, and selectivity helps researchers distinguish these outcomes and refine candidate treatments.
In pharmacology, inhibition studies connect molecular targets with decisions about dose optimization and treatment safety. Enzyme, receptor, transporter, and ion-channel targets provide different contexts for interpreting altered activity, while downstream signaling or metabolism links target effects to broader biological consequences. This framework supports drug discovery by relating target interactions to therapeutic and toxic outcomes.