title: In vivo histamine voltammetry in the mouse premammillary nucleus.
abstract: Histamine plays a major role in the mediation of allergic reactions such as peripheral inflammation. This classical monoamine is also a neurotransmitter involved in the central nervous system but its role in this context is poorly understood. Studying histamine neurotransmission is important due to its implications in many neurological disorders. The sensitivity, selectivity and high temporal resolution of fast scan cyclic voltammetry (FSCV) offer many advantages for studying electroactive neurotransmitters. Histamine has previously been studied with FSCV; however, the lack of a robust Faradaic electrochemical signal makes it difficult to selectively identify histamine in complex media, as found in vivo. In this work, we optimize an electrochemical waveform that provides a stimulation-locked and unique electrochemical signal towards histamine. We describe in vitro waveform optimization and a novel in vivo physiological model for stimulating histamine release in the mouse premammillary nucleus via stimulation of the medial forebrain bundle. We demonstrate that a robust signal can be used to effectively identify histamine and characterize its in vivo kinetics.
authors.affiliation: Department of Chemistry, Wayne State University, Detroit, USA. phashemi@chem.wayne.edu.
authors.forename: Srimal
authors.initials: S
authors.lastname: Samaranayake
authors.forename: Aya
authors.initials: A
authors.lastname: Abdalla
authors.forename: Rhiannon
authors.initials: R
authors.lastname: Robke
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Wood
authors.forename: Anisa
authors.initials: A
authors.lastname: Zeqja
authors.forename: Parastoo
authors.initials: P
authors.lastname: Hashemi
mesh_terms: D000327:Adsorption; D000818:Animals; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D004553:Electric Conductivity; D004558:Electric Stimulation; D004563:Electrochemistry / Q000295:instrumentation / Q000379:methods*; D006632:Histamine / Q000737:chemistry*; D006636:Histamine Release; D007034:Hypothalamus, Posterior / Q000378:metabolism*; D008297:Male; D008474:Medial Forebrain Bundle; D051379:Mice; D008839:Microelectrodes
chemical_list: D000077482:Carbon Fiber; D002244:Carbon; D006632:Histamine