Multiparametric assessment of the impact of opsin expression and anesthesia on striatal cholinergic neurons and auditory brainstem activity
| Autor: | Jeffery R. Wickens, Stefan Pommer, Paolo Barzaghi, Andres Carrasco, Kiyoto Kurima, Julie A. Chouinard, Atsushi Tamura |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Channelrhodopsin Sensory system Mice Transgenic Biology 03 medical and health sciences Mice 0302 clinical medicine medicine Evoked Potentials Auditory Brain Stem Animals Patch clamp Cholinergic neuron Anesthetics Opsins General Neuroscience Wild type Cholinergic Neurons Corpus Striatum Mice Inbred C57BL 030104 developmental biology nervous system Anesthetic Models Animal Brainstem Neuroscience 030217 neurology & neurosurgery Acetylcholine medicine.drug |
| Zdroj: | The Journal of comparative neurologyREFERENCES. 528(5) |
| ISSN: | 1096-9861 |
| Popis: | Recent developments in genetic engineering have established murine models that permit the selective control of cholinergic neurons via optical stimulation. Despite copious benefits granted by these experimental advances, the sensory physiognomy of these organisms has remained poorly understood. Therefore, the present study evaluates sensory and neuronal response properties of animal models developed for the study of optically induced acetylcholine release regulation. Auditory brainstem responses, fluorescence imaging, and patch clamp recording techniques were used to assess the impact of viral infection, sex, age, and anesthetic agents across the ascending auditory pathway of ChAT-Cre and ChAT-ChR2(Ai32) mice. Data analyses revealed that neither genetic configuration nor adeno-associated viral infection alters the early stages of auditory processing or the cellular response properties of cholinergic neurons. However, anesthetic agent and dosage amount profoundly modulate the response properties of brainstem neurons. Last, analyses of age-related hearing loss in virally infected ChAT-Cre mice did not differ from those reported in wild type animals. This investigation demonstrates that ChAT-Cre and ChAT-ChR2(Ai32) mice are viable models for the study of cholinergic modulation in auditory processing, and it emphasizes the need for prudence in the selection of anesthetic procedures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text