Reassessing the Role of Histaminergic Tuberomammillary Neurons in Arousal Control
نویسندگان
چکیده
منابع مشابه
Orexin/hypocretin excites the histaminergic neurons of the tuberomammillary nucleus.
The hypothalamic orexin (hypocretin) neuropeptides are associated with the regulation of sleep and feeding, and disturbances in orexinergic neurotransmission lead to a narcoleptic phenotype. Histamine has also been shown to play a role in the regulation of sleep and feeding. Therefore, we studied the relationship between the orexin and histamine systems of the CNS using electrophysiology, immun...
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1. Intracellular recordings were obtained from histaminergic tuberomammillary (TM) neurons of rat hypothalamus in an in vitro slice preparation. The properties of a time- and voltage-dependent inward current activated on hyperpolarization, Ih, were studied by use of the single-electrode voltage-clamp technique. 2. The activation curve of Ih was well fit by a sigmoidal function, with half-maxima...
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Using extracellular single-unit recordings alone and in combination with neurobiotin juxtacellular labeling and histamine immunohistochemistry, we have identified, for the first time in nonanesthetized, head-restrained mice, histamine neurons in the tuberomammillary nuclei of the posterior hypothalamus. They are all characterized by triphasic broad action potentials. They are active only during...
متن کاملInnervation of histaminergic tuberomammillary neurons by GABAergic and galaninergic neurons in the ventrolateral preoptic nucleus of the rat.
The tuberomammillary nucleus (TMN) is the major source of histaminergic innervation of the mammalian brain and is thought to play a major role in regulating wake-sleep states. We recently found that sleep-active neurons in the ventrolateral preoptic nucleus (VLPO) provide a major input to the TMN, but the specificity of this projection and the neurotransmitters involved remain unknown. In this ...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 2019
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.1032-19.2019