TDP-43 mouse study links lasting behavioural problems to synaptic changes
Original source
Synaptic changes contribute to persistent extra-motor behaviour deficits in amyotrophic lateral sclerosis. (opens in a new tab)Compass summarised this from the study's abstract.
Study details
- Studied in
- Human, Mouse
Related topics
A study in mice found that TDP-43 pathology was associated with behavioural and social difficulties alongside motor decline. These extra-motor problems persisted after the mice recovered motor function, alongside lasting RNA-splicing abnormalities and reduced synaptic proteins. Similar glutamatergic pathway changes were found in post-mortem human ALS and frontotemporal dementia tissue.
Why this matters
The findings suggest that synaptic changes may contribute to cognitive, social and behavioural symptoms linked to TDP-43 pathology. However, this was a mouse study with supporting post-mortem human data, so it does not yet change treatment for people with ALS or establish that targeting glutamatergic synapses will help them.
Limitations and context
The main experiments used the rNLS8 mouse model, not people. The human evidence came from post-mortem ALS and frontotemporal dementia datasets, which cannot show whether the synaptic changes cause symptoms or whether a treatment would reverse them. The proposed therapeutic direction remains to be tested.