Induction of oral tremor in mice by the acetylcholinesterase inhibitor galantamine: Reversal with adenosine A2A antagonism
Scholar | Otros documentos del autor: Podurgiel, Samantha J.; Spencer, Tiahna; Kovner, Rotem; Baqi, Younis; Müller, Christa E.; Correa Sanz, Mercè; Salamone, John D.
MetadatosMostrar el registro completo del ítem
TítuloInduction of oral tremor in mice by the acetylcholinesterase inhibitor galantamine: Reversal with adenosine A2A antagonism
Fecha de publicación2016-01
Versión del editorhttp://www.sciencedirect.com/science/article/pii/S0091305715300800
Tremulous jaw movements (TJMs) have become a commonly used rat model of Parkinsonian tremor. TJMs can be induced by a number of neurochemical conditions that parallel those seen in human Parkinsonism, including DA ... [+]
Tremulous jaw movements (TJMs) have become a commonly used rat model of Parkinsonian tremor. TJMs can be induced by a number of neurochemical conditions that parallel those seen in human Parkinsonism, including DA depletion, DA antagonism, and cholinomimetic administration, and can be reduced by various antiparkinsonian agents. TJMs typically occur in bursts with the peak frequency in the range of 3–7.5 Hz, which is similar to the Parkinsonian tremor frequency range. While the vast majority of this work has been done using rats, current efforts have focused on extending the TJM model to mice. The aim of the present studies was to establish a mouse model of Parkinsonian resting tremor using the anticholinesterase galantamine, and to investigate the effects of adenosine A2A antagonism on galantamine-induced TJMs. Galantamine significantly induced TJMs in a dose-dependent manner (0.5, 1.0, 1.5, 2.0, 2.5 mg/kg IP). The TJMs tended to occur in bursts in the 3–7.5 Hz frequency range, with a peak frequency of approximately 6 Hz. Systemic administration of the adenosine A2A antagonist MSX-3 (2.5, 5.0, 10.0 mg/kg) significantly attenuated galantamine-induced TJMs. Co-administration of MSX-3 also altered the local frequency of galantamine-induced TJMs, decreasing the peak frequency from approximately 6 Hz to 5 Hz, though the vast majority of TJMs remained in the frequency range characteristic of Parkinsonian resting tremor. These results indicate that adenosine A2A antagonism is capable of reducing anticholinesterase-induced TJMs in mice. Extending the TJM model to mice gives researchers an additional avenue for investigating drug-induced Parkinsonism and tremorogenesis, and could be a useful addition to the study of motor abnormalities observed in mouse genetic models of Parkinsonism. [-]
Palabras clave / Materias
Cita bibliográficaPODURGIEL, Samantha J., et al. Induction of oral tremor in mice by the acetylcholinesterase inhibitor galantamine: Reversal with adenosine A 2A antagonism. Pharmacology Biochemistry and Behavior, 2016, vol. 140, p. 62-67
Tipo de documentoinfo:eu-repo/semantics/article
Derechos de acceso
Copyright © 2015 Elsevier Inc. All rights reserved.
Aparece en las colecciones
- PSB_Articles