Cav3.2 T-type calcium channels control acute itch in mice

Cav3.2 T-type calcium channels are important mediators of nociceptive signaling, but their roles in the transmission of itch remains poorly understood. Here we report a key involvement of these channels as key modulators of itch/pruritus-related behavior. We compared scratching behavior responses between wild type and Cav3.2 null mice in models of histamine- or chloroquine-induced itch. We also evaluated the effect of the T-type calcium channel blocker DX332 in male and female wild-type mice injected with either histamine or chloroquine. Cav3.2 null mice exhibited decreased scratching responses during both histamine- and chloroquine-induced acute itch. DX332 co-injected with the pruritogens inhibited scratching responses of male and female mice treated with either histamine or chloroquine. Altogether, our data provide strong evidence that Cav3.2 T-type channels exert an important role in modulating histamine-dependent and -independent itch transmission in the primary sensory afferent pathway, and highlight these channels as potential pharmacological targets to treat pruritus.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:13

Enthalten in:

Molecular brain - 13(2020), 1 vom: 01. Sept., Seite 119

Sprache:

Englisch

Beteiligte Personen:

Gadotti, Vinicius M [VerfasserIn]
Kreitinger, Joanna M [VerfasserIn]
Wageling, Nicholas B [VerfasserIn]
Budke, Dylan [VerfasserIn]
Diaz, Philippe [VerfasserIn]
Zamponi, Gerald W [VerfasserIn]

Links:

Volltext

Themen:

820484N8I3
886U3H6UFF
Cacna1h protein, mouse
Calcium Channels, T-Type
Cav3.2 T-type channel
Chloroquine
Histamine
Itch
Journal Article
Pruritus
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 07.07.2021

Date Revised 07.07.2021

published: Electronic

Citation Status MEDLINE

doi:

10.1186/s13041-020-00663-9

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM31446316X