Kappa opioids inhibit the GABA/glycine terminals of rostral ventromedial medulla projections in the superficial dorsal horn of the spinal cord

Y Otsu, KR Aubrey - The Journal of Physiology, 2022 - Wiley Online Library
Descending projections from neurons in the rostral ventromedial medulla (RVM) make
synapses within the superficial dorsal horn (SDH) of the spinal cord that are involved in the …

GABAergic transmission and enhanced modulation by opioids and endocannabinoids in adult rat rostral ventromedial medulla

MH Li, KL Suchland, SL Ingram - The Journal of physiology, 2015 - Wiley Online Library
Key points Electrical stimulation of the rostral ventromedial medulla (RVM) facilitates pain
behaviours in neonates but inhibits these behaviours in adults. The cellular mechanisms …

Descending controls modulate inflammatory joint pain and regulate CXC chemokine and iNOS expression in the dorsal horn

FB Carr, SM Géranten, SP Hunt - Molecular pain, 2014 - journals.sagepub.com
Background: Descending control of nociceptive processing, by pathways originating in the
rostral ventromedial medulla (RVM) and terminating in the dorsal horn, contributes to …

An update on the spinal and peripheral pathways of pain signalling

SG Lechner - e-Neuroforum, 2017 - degruyter.com
Painful or potentially tissue-damaging stimuli are detected by primary sensory afferents that
innervate the skin as well as internal tissues. The neurons that give rise to sensory afferents …

Dissecting neural circuits from rostral ventromedial medulla to spinal trigeminal nucleus bidirectionally modulating craniofacial mechanical sensitivity

Y Xue, S Mo, Y Li, Y Cao, X Xu, Q Xie - Progress in Neurobiology, 2024 - Elsevier
Chronic craniofacial pain is intractable and its mechanisms remain unclarified. The rostral
ventromedial medulla (RVM) plays a crucial role in descending pain facilitation and …

Imaging CNS modulation of pain in humans

U Bingel, I Tracey - Physiology, 2008 - journals.physiology.org
Pain is a highly complex and subjective experience that is not linearly related to the
nociceptive input. What is clear from anecdotal reports over the centuries and more recently …

A comparison of visceral and somatic pain processing in the human brainstem using functional magnetic resonance imaging

P Dunckley, RG Wise, M Fairhurst… - Journal of …, 2005 - Soc Neuroscience
Evidence from both human and animal studies has demonstrated a key role for brainstem
centers in the control of ascending nociceptive input. Nuclei such as the rostral ventromedial …

Role of RVM neurons in capsaicin-evoked visceral nociception and referred hyperalgesia

R Sanoja, V Tortorici, C Fernandez, TJ Price… - European Journal of …, 2010 - Elsevier
Most forms of visceral pain generate intense referred hyperalgesia but the mechanisms of
this enhanced visceral hypersensitivity are not known. The on-cells of the rostral …

Medullary kappa-opioid receptor neurons inhibit pain and itch through a descending circuit

E Nguyen, KM Smith, N Cramer, RA Holland… - Brain, 2022 - academic.oup.com
In perilous and stressful situations, the ability to suppress pain can be critical for survival.
The rostral ventromedial medulla contains neurons that robustly inhibit nocioception at the …

Cortical regulation of nociception of the trigeminal nucleus caudalis

A Castro, C Raver, Y Li, O Uddin, D Rubin… - Journal of …, 2017 - Soc Neuroscience
Pain perception is strongly influenced by descending pathways from “higher” brain centers
that regulate the activity of spinal circuits. In addition to the extensively studied descending …