Publication Date:
2015-10-31
Description:
Light mechanical stimulation of hairy skin can induce a form of itch known as mechanical itch. This itch sensation is normally suppressed by inputs from mechanoreceptors; however, in many forms of chronic itch, including alloknesis, this gating mechanism is lost. Here we demonstrate that a population of spinal inhibitory interneurons that are defined by the expression of neuropeptide Y::Cre (NPY::Cre) act to gate mechanical itch. Mice in which dorsal NPY::Cre-derived neurons are selectively ablated or silenced develop mechanical itch without an increase in sensitivity to chemical itch or pain. This chronic itch state is histamine-independent and is transmitted independently of neurons that express the gastrin-releasing peptide receptor. Thus, our studies reveal a dedicated spinal cord inhibitory pathway that gates the transmission of mechanical itch.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4700934/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4700934/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bourane, Steeve -- Duan, Bo -- Koch, Stephanie C -- Dalet, Antoine -- Britz, Olivier -- Garcia-Campmany, Lidia -- Kim, Euiseok -- Cheng, Longzhen -- Ghosh, Anirvan -- Ma, Qiufu -- Goulding, Martyn -- NS072031/NS/NINDS NIH HHS/ -- NS072040/NS/NINDS NIH HHS/ -- NS080586/NS/NINDS NIH HHS/ -- NS086372/NS/NINDS NIH HHS/ -- P01 NS072040/NS/NINDS NIH HHS/ -- P30 NS072031/NS/NINDS NIH HHS/ -- R01 NS 067216/NS/NINDS NIH HHS/ -- R01 NS080586/NS/NINDS NIH HHS/ -- R01 NS086372/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2015 Oct 30;350(6260):550-4. doi: 10.1126/science.aac8653.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. ; Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA. ; Neurobiology Section, Division of Biological Sciences, University of California, San Diego, CA 92093, USA. ; Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA. Institute of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China. ; Dana-Farber Cancer Institute and Department of Neurobiology, Harvard Medical School, 1 Jimmy Fund Way, Boston, MA 02115, USA. goulding@salk.edu qiufu_ma@dfci.harvard.edu. ; Molecular Neurobiology Laboratory, The Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. goulding@salk.edu qiufu_ma@dfci.harvard.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26516282" target="_blank"〉PubMed〈/a〉
Keywords:
Action Potentials
;
Animals
;
Hair/physiology
;
Interneurons/*physiology
;
Mechanoreceptors/physiology
;
Mechanotransduction, Cellular/genetics/*physiology
;
Mice
;
Mice, Transgenic
;
*Neural Inhibition
;
Neuropeptide Y/genetics/physiology
;
Pruritus/*physiopathology
;
Skin/innervation
;
Spinal Cord/*physiology
;
*Synaptic Transmission
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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