Articles: trauma.
-
There is a rich literature describing the loss of dorsal root ganglion (DRG) neurons following peripheral axotomy, but the vulnerability of discrete subpopulations has not yet been characterised. Furthermore, the extent or even presence of neuron loss following injury has recently been challenged. In this study, we have used a range of transgenic recombinase driver mouse lines to genetically label molecularly defined subpopulations of DRG neurons and track their survival following traumatic nerve injury. ⋯ We show that this subpopulation is almost entirely lost following spared nerve injury and severely depleted (by roughly 50%) following sciatic nerve crush. Finally, we used an in vitro model of DRG neuron survival to demonstrate that nonpeptidergic nociceptor loss is likely dependent on the absence of neurotrophic support. Together, these results profile the extent to which DRG neuron subpopulations can survive axotomy, with implications for our understanding of nerve injury-induced plasticity and pain.
-
Eur J Trauma Emerg Surg · Dec 2024
Just my luck: How children's causal attributions contribute to injury prevention.
Traumatic injury in children, particularly adolescents, is both frequently and costly. In this study, we directly examined children's causal attributions for the recent traumas and asked them to propose prevention strategies of their own. We predict that children who attribute their injuries to their own actions, rather than an external force such as luck, will be more likely to develop strategies to avoid trauma in the future. ⋯ Children surveyed denied their own culpability and preferred to attribute their injuries to bad luck. Moreover, children who believed themselves to be simply unlucky were less able than others to propose strategies that might prevent further injury.