Lecture 5 - Dose-Response Relationships
See Lecture Schedule for
Delivery Date
Learning Objectives
- Understand the quantitative relationship between
toxicant exposure and induced effect.
- Describe frequently encountered toxic effects.
- Interpret frequency (normal distribution) and
dose-response curves.
- Understand threshold effects with dosage increase.
- Understand effective dose, margin of safety and the
relationship of effective vs. toxic dose.
- Examine the use of actual data for no observed effect
and lowest observed effect in risk assessments.
- Summarize effective, lethal and toxic doses.
- Understand a linearized, multi-stage model for
non-threshold responses.
Advance Reading
- Richards, pp 105-114; pp 305-331
- NLM Toxicology Tutor
Dose and Response
Resources
Keywords
- Associative relationships
- Causal relationships
- Ceiling effect
- Cumulative dose-response graph
- Dose-response relationship
- ED50
- Effective dose (ED)
- Efficacy
- Epidemiological studies
- Frequency dose-response graph
- LD50
- Lethal dose (LD)
- Margin of safety
- Mixed toxicity
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- No Observable Effect Level (NOEL)
- Normal distribution
- Potency
- Potent
- Reversed toxicity
- Subthreshold doses
- TD50
- Threshold dose
- Threshold Limit Value (TLV)
- Toxic dose (TD)
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Suggested Reading
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