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Updated: Sep 26, 2026

Quantification of Atherosclerosis in Mice
Published on: June 12, 2019
Cardiovascular diseases: new insights from knockout mice
Pedro D'Orléans-Juste1, Jean-Claude Honoré, Emilie Carrier
1Department of Pharmacology, Medical School Institut de pharmacologie de Sherbrooke Université de Sherbrooke 3001, 12th Avenue, North, Québec J1H 5N4, Sherbrooke, Canada. pedro.dorleans-juste@usherbrooke.ca
Abstract:
Knockout (KO) mice models have generated a wealth of new information on the developmental and physiopathological roles of several hormones and their receptors. In these mice, KO of a specific gene can be lethal at embryonic stages or during early adulthood. Furthermore, in conditions of non-lethality, KO mice may compensate for the repression of a particular protein expression. As a result of these two aspects, various phenotypic expressions occur in KO mice models for several peptides and their respective receptors, as well as for the enzymes involved in their processing.
Insights
Knockout (KO) mice models reveal hormone roles but can be lethal or compensated, leading to varied phenotypes in peptides, receptors, and processing enzymes.
Area of Science:
- Endocrinology and Physiology
- Genetics and Molecular Biology
Background:
- Knockout (KO) mice models are crucial for studying gene function.
- Hormones, receptors, and processing enzymes play vital roles in development and physiology.
Purpose of the Study:
- To summarize the impact of gene KO on understanding hormone-related functions.
- To highlight challenges and outcomes in KO mouse model research.
Main Methods:
- Gene KO in mice to study specific gene functions.
- Phenotypic analysis of KO mice.
Main Results:
- Gene KO can be lethal during embryonic development or early adulthood.
- Non-lethal KO may lead to compensatory mechanisms, altering protein expression.
- Diverse phenotypic outcomes observed in KO models for peptides, receptors, and enzymes.
Conclusions:
- KO mouse models provide significant insights into developmental and physiopathological processes.
- Phenotypic variability in KO mice necessitates careful interpretation of results.
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