Lamina specific loss of inhibition may lead to distinct neuropathic manifestations: a computational modeling approach
AUTOR(ES)
Prada, Erick Javier Argüello, Bustillos, Ricardo José Silva, Huerta, Mónica Karel, Martínez, Antonio D’Alessandro
FONTE
Res. Biomed. Eng.
DATA DE PUBLICAÇÃO
2015-04
RESUMO
Introduction It has been reported that inhibitory control at the superficial dorsal horn (SDH) can act in a regionally distinct manner, which suggests that regionally specific subpopulations of SDH inhibitory neurons may prevent one specific neuropathic condition. Methods In an attempt to address this issue, we provide an alternative approach by integrating neuroanatomical information provided by different studies to construct a network-model of the SDH. We use Neuroids to simulate each neuron included in that model by adapting available experimental evidence. Results Simulations suggest that the maintenance of the proper level of pain sensitivity may be attributed to lamina II inhibitory neurons and, therefore, hyperalgesia may be elicited by suppression of the inhibitory tone at that lamina. In contrast, lamina III inhibitory neurons are more likely to be responsible for keeping the nociceptive pathway from the mechanoreceptive pathway, so loss of inhibitory control in that region may result in allodynia. The SDH network-model is also able to replicate non-linearities associated to pain processing, such as Aβ-fiber mediated analgesia and frequency-dependent increase of the neural response. Discussion By incorporating biophysical accuracy and newer experimental evidence, the SDH network-model may become a valuable tool for assessing the contribution of specific SDH connectivity patterns to noxious transmission in both physiological and pathological conditions.
Documentos Relacionados
- A Computational Approach to Modeling Nucleic Acid Hairpin Structures
- Modeling civil violence: An agent-based computational approach
- Carcinoid tumour of the thymus with systemic manifestations: a radiological and pathological study
- Glomerular-specific alterations of VEGF-A expression lead to distinct congenital and acquired renal diseases
- Chikungunya virus infection with severe neurologic manifestations: report of four fatal cases