Table of Contents
What is the significance of the general toxicity study?
- Is the primary basis for understanding the acute toxicity of drugs to the organism, is an essential work in toxicology research;
- Observe the toxic effect spectrum, toxic effect characteristics, and toxic target organs of drugs, and understand the mechanism of drug toxicity;
- Confirmation of the reversibility of damage caused by drug toxicity;
- To study the dose-response (effect) relationship of repeated exposure to the toxic effects of the test substance, from preliminary understanding to determine the dose at which no harmful effects are observed (NOAEL) and the lowest dose at which harmful effects are observed (LOAEL), to provide reference values for establishing safety limits for human exposure;
- Determining the differences in toxic effects of different animal species on the test substance to provide a basis for extrapolation of study results to humans.
- Acute toxicity tests.
- Repeated dose toxicity tests (short-term toxicity tests).
- Sub-chronic toxicity tests.
- Chronic toxicity tests.
What is a general toxicity study?
(1) Closest to humans in terms of toxic response;
(2) Easy to keep and handle;
(3) Not too long natural life;
(4) Economical and easy to obtain.
Medicilon has rat, canine, and monkey rooms compliant with GLP standards and can undertake non-clinical general toxicity tests on rodents and non-rodents. It has cooperated with MPI in the US, learned and inherited MPI’s quality management system/SOP, implemented comprehensive quality control measures, adopted three-level QC management, applied advanced data management software system, and is experienced in projects.
Acute Toxicity test
Repeat Dose Toxicity Test
Repeated dosing toxicity test should, in principle, set up at least three dose groups of low, medium, and high, as well as a solvent (or excipient) control group, if necessary to set up a blank control group and/or positive control group.
High dose in principle to produce significant toxic reactions in animals, low dose in principle equivalent or higher than the equivalent dose of animal pharmacodynamic dose or clinical use dose, the medium dose should be combined with the mechanism and characteristics of toxic effects between high and low dose set up to examine the dose-response relationship of toxicity.