ArticleBehavioural brain research2022
Behavioral recovery after a spinal deafferentation injury in monkeys does not correlate with extent of corticospinal sprouting.
Article in Behavioural brain research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 3 citations in OpenAlex.
- Total Intravenous Anesthesia with Propofol Effectively Provides a Light Anesthesia Plane in Cynomolgus Male Monkeys (Macaca fascicularis) Undergoing Nociceptive Heat Stimulation.Journal of the American Association for Laboratory Animal Science : JAALAS · 2026Article
- Chronic Adaptations in the Dorsal Horn Following a Cervical Spinal Cord Injury in Primates.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- BDNF Influence on Adult Terminal Axon Sprouting after Partial Deafferentation.International journal of molecular sciences · 2023Article
- Small sensory spinal lesions that affect hand function in monkeys greatly alter primary afferent and motor neuron connections in the cord.The Journal of comparative neurology · 2022Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
A long held view in the spinal cord injury field is that corticospinal terminal sprouting is needed for new connections to form, that then mediate behavioral recovery. This makes sense, but tells us little about the relationship between corticospinal sprouting extent and recovery potential. The inference has been that more extensive axonal sprouting predicts greater recovery, though there is little evidence to support this. Here we addressed this by comparing behavioral data from monkeys that had received one of two established deafferentation spinal injury models in monkeys (Darian-Smith et al., 2014, Fisher et al., 2019, 2020). Both injuries cut similar afferent pools supplying the thumb, index and middle fingers of one hand but each resulted in a very different corticospinal tract (CST) sprouting response. Following a cervical dorsal root lesion, the somatosensory CST retracted significantly, while the motor CST stayed largely intact. In contrast, when a dorsal column lesion was combined with the DRL, somatosensory and motor CSTs sprouted dramatically within the cervical cord. How these two responses relate to the behavioral outcome was not clear. Here we analyzed the behavioral outcome for the two lesions, and provide a clear example that sprouting extent does not track with behavioral recovery.
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