PTOtherMolecular autism2022

Deep phenotyping reveals movement phenotypes in mouse neurodevelopmental models.

Ugne Klibaite, Mikhail Kislin, Jessica L Verpeut and 4 others

PMID 35279205

WHAT IT FOUND

Automated video analysis of mouse autism models separated movement signatures: Cntnap2 knockouts showed fast locomotion and more grooming, while L7-Tsc1 mutants showed slower gait and reduced habituation.

This was mouse work, not evidence for human therapy.

Key findings

01The method grouped mouse open-field behavior into 100 fine-grained clusters and eight coarse classes.

02Cntnap2 knockout mice used several fastest locomotion clusters more than littermates and groomed more from day 2.

03L7-Tsc1 mutants spent less time in fast locomotion clusters than any other group and used slow locomotion clusters uncommon in controls.

STILL TO COME

How it was doneWhat they foundWhat it means for PTs

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What it does not show

The study was done in mice, not people, and tested no therapy. Only male autism-model mice were tested, so the findings may not apply to females with autism-related models. Only two mouse models were studied out of about a dozen available models of genetic risk for autism. The paper did not track social behavior or use a task condition, so it does not address social communication or complex environment interactions. Human annotators and the algorithm agreed less often, partly because behavior classes and timescales were hard to capture.

Declared interests

Funding was from the National Institute of Neurological Disorders and Stroke, National Institute of Mental Health and National Science Foundation. The supplied text does not state author conflicts of interest.

The easy way to misread this

Do not conclude that these mouse movement patterns should guide autism assessment or therapy. The study used genetically modified mice in an open field, not human patients, and it tested no treatment.

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