Animal Models of Febrile Seizures: Limitations and Recent Advances in the Field
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Published on: July 12, 2021
Alexandra V Griflyuk1, Tatyana Y Postnikova1, Aleksey V Zaitsev1
1Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, 44, Toreza Prospekt, Saint Petersburg 194223, Russia.
Insights
Febrile seizures (FSs) in children are common neurological events. Animal models offer insights into FSs
Area of Science:
- Pediatric Neurology
- Neuroscience
- Animal Models of Disease
Background:
- Febrile seizures (FSs) are common childhood neurological disorders linked to elevated body temperature.
- Current human study technologies have limitations in capturing subtle nervous system changes post-seizure.
- Animal models are crucial for understanding FSs' etiology and pathophysiology.
Purpose of the Study:
- To review key considerations for using animal models of febrile seizures.
- To provide an overview of current methods for inducing seizures in model subjects.
- To summarize findings on brain changes and behavioral alterations in animal models of FSs.
Main Methods:
- Utilizing hyperthermic models in young rats and mice (10-12 days old).
- Reviewing existing literature on seizure induction techniques in various animal models.
- Analyzing studies reporting morphological, functional, and behavioral outcomes in animal models.
Main Results:
- Hyperthermic rodent models reproduce many FS characteristics but have limitations.
- Various methods exist for inducing seizures in animal models.
- Studies reveal significant morphological and functional brain changes, alongside behavioral alterations, in animal models post-seizure.
Conclusions:
- Animal models are invaluable for studying febrile seizures, despite inherent limitations.
- Understanding brain and behavioral changes in models aids FS research.
- Further refinement of animal models is essential for advancing FS knowledge.
Abstract:
Febrile seizures (FSs) are defined as seizures occurring in children aged 6 months to 5 years with a background of elevated body temperature. It is one of the most common neurological disorders of childhood, emphasizing the importance of understanding the causes of FSs and their impact on the developing nervous system. However, there are significant limitations to the technologies currently available for studying the etiology and pathophysiology of seizures in humans. It is currently not possible to adequately capture the subtle molecular and structural rearrangements of the nervous system that can occur after seizures in humans. The use of animal models can be invaluable for these purposes. The most commonly used models in modern research are hyperthermic models in rats and mice aged 10-12 days. While these models can reproduce many of the characteristics of FSs, they have certain limitations. This review outlines the key considerations when working with models of FSs, provides an overview of current approaches to producing seizures in different model subjects, and presents a summary of key findings regarding morphological and functional changes in the brain and behavioral alterations that have been identified in studies using animal models of FSs.
