ArticleThe Journal of comparative neurology2021
Novel inhibitory brainstem neurons with selective projections to spinal lamina I reduce both pain and itch.
Article in The Journal of comparative neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Two-Step Actions of Testicular Androgens in the Organization of a Male-Specific Neural Pathway from the Medial Preoptic Area to the Ventral Tegmental Area for Modulating Sexually Motivated Behavior.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
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- Novel inhibitory brainstem neurons with selective projections to spinal lamina I reduce both pain and itch.The Journal of comparative neurology · 2021Article
- Article
- Optotagging and characterization of GABAergic rostral ventromedial medulla (RVM) neurons.Molecular painArticle
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Authors and funding
2 authors.
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Abstract
Sensory information is transmitted from peripheral nerves, through the spinal cord, and up to the brain ("bottom up" pathway). Some of this information may be modulated by "top-down" projections from the brain to the spinal cord. Discovering endogenous mechanisms for reducing pain and itch holds enormous potential for developing new treatments. However, neurons mediating the top-down inhibition of pain are not well understood, nor has any such pathway been identified for itch sensation. Here, we identify a novel population of GABAergic neurons in the ventral brainstem, distinguished by prodynorphin expression, which we named LJA5. LJA5 neurons provide the only known inhibitory projection specifically to lamina I of the spinal cord, which contains sensory neurons that transmit pain and itch information up to the brain. Chemogenetically activating LJA5 neurons in male mice reduces capsaicin-induced pain and histamine-induced itch. Identifying this new pathway opens new treatment opportunities for chronic, refractory pain, and pruritis.
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