Persistent nociceptor hyperactivity as a painful evolutionary adaptation

ET Walters, RJ Crook, GG Neely, TJ Price… - Trends in …, 2023 - cell.com
Chronic pain caused by injury or disease of the nervous system (neuropathic pain) has been
linked to persistent electrical hyperactivity of the sensory neurons (nociceptors) specialized …

Nociceptive biology of molluscs and arthropods: evolutionary clues about functions and mechanisms potentially related to pain

ET Walters - Frontiers in physiology, 2018 - frontiersin.org
Important insights into the selection pressures and core molecular modules contributing to
the evolution of pain-related processes have come from studies of nociceptive systems in …

Cellular, molecular, and epigenetic mechanisms in non-associative conditioning: implications for pain and memory

EJ Rahn, MC Guzman-Karlsson, JD Sweatt - Neurobiology of learning and …, 2013 - Elsevier
Sensitization is a form of non-associative conditioning in which amplification of behavioral
responses can occur following presentation of an aversive or noxious stimulus …

cAMP and cGMP contribute to sensory neuron hyperexcitability and hyperalgesia in rats with dorsal root ganglia compression

XJ Song, ZB Wang, Q Gan… - Journal of …, 2006 - journals.physiology.org
Numerous studies have implicated the cAMP-protein kinase A (PKA) pathway in producing
hyperexcitability of dorsal root ganglia (DRG) sensory neurons under conditions associated …

Isolated nociceptors reveal multiple specializations for generating irregular ongoing activity associated with ongoing pain

MA Odem, AG Bavencoffe, RM Cassidy, ER Lopez… - Pain, 2018 - journals.lww.com
Ongoing pain has been linked to ongoing activity (OA) in human C-fiber nociceptors, but
rodent models of pain-related OA have concentrated on allodynia rather than ongoing pain …

Cyclic GMP pathway is critical for inducing long–term sensitization of nociceptive sensory neurons

MR Lewin, ET Walters - Nature neuroscience, 1999 - nature.com
Noxious stimulation can trigger persistent sensitization of somatosensory systems that
involves memory–like mechanisms. Here we report that noxious stimulation of the mollusc …

Changes in neuronal excitability serve as a mechanism of long-term memory for operant conditioning

R Mozzachiodi, FD Lorenzetti, DA Baxter… - Nature …, 2008 - nature.com
Learning can lead to changes in the intrinsic excitability of neurons. However, the extent to
which these changes persist and the role they have in the expression of memory remain …

Dissociation of dorsal root ganglion neurons induces hyperexcitability that is maintained by increased responsiveness to cAMP and cGMP

JH Zheng, ET Walters, XJ Song - Journal of …, 2007 - journals.physiology.org
Injury or inflammation affecting sensory neurons in dorsal root ganglia (DRG) causes
hyperexcitability of DRG neurons that can lead to spontaneous firing and neuropathic pain …

Persistent electrical activity in primary nociceptors after spinal cord injury is maintained by scaffolded adenylyl cyclase and protein kinase A and is associated with …

A Bavencoffe, Y Li, Z Wu, Q Yang… - Journal of …, 2016 - Soc Neuroscience
Little is known about intracellular signaling mechanisms that persistently excite neurons in
pain pathways. Persistent spontaneous activity (SA) generated in the cell bodies of primary …

The role of PKA and PKCε pathways in prostaglandin E2‐mediated hypernociception

D Sachs, CF Villarreal, FQ Cunha… - British journal of …, 2009 - Wiley Online Library
Background and purpose: Protein kinase (PK) A and the ε isoform of PKC (PKCε) are
involved in the development of hypernociception (increased sensitivity to noxious or …