The neuromodulator histamine is released throughout the brain during periods of wakefulness. Combined with an abundant expression of histamine receptors, this suggests potential widespread histaminergic control of neural circuit activity. However, the effect of histamine on many of these circuits is unknown. In this review we will discuss recent evidence for histaminergic modulation of the basa...

There exists a possibility of interactions of histaminergic system with other neurotransmitters and their receptors in the central nervous system. Experimental evidences suggest a possible inhibitory influence of histaminergic system on the dopaminergic system. To elucidate the possible interaction between the histaminergic and dopaminergic pathways, we devised a strategy to study their effects...

Histamine and its receptors were first described as part of immune and gastrointestinal systems, but their presence in the central nervous system and importance in behavior are gaining more attention. The histaminergic system modulates different processes including wakefulness, feeding, and learning and memory consolidation. Histamine receptors (H1R, H2R, H3R, and H4R) belong to the rhodopsin-l...

BACKGROUND Angioedema has numerous hereditary, acquired and iatrogenic causes. A number of studies show that angioedema is inadequately assessed and treated during its acute phase as well as in the follow-up period. We present an algorithm for the assessment and treatment of patients with angioedema. KNOWLEDGE BASE: The article is based on a literature search in PubMed, a review of bibliographi...

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The superior cervical ganglion (SCG), the sympathetic organ innervating the carotid body (CB), lies at the bifurcation of the common carotid artery, near the CB. The ganglion is composed of functional subsets of neurons showing different sympathetic phenotypes. The expression of putative neurotransmitters and their receptors in the rat SCG was investigated at light microscopical level using imm...

The histaminergic system is thought to regulate brain reward, but the exact mechanisms are poorly understood. This study aims to reveal the pathophysiological differences in the brain histaminergic system between selectively outbred alcohol-preferring AA and alcohol-avoiding ANA rats by using a combination of biochemical, immunohistochemical, and molecular biological methods. We also want to te...

Itch of peripheral origin requires information transfer from the spinal cord to the brain for perception. Here, primate spinothalamic tract (STT) neurons from lumbar spinal cord were functionally characterized by in vivo electrophysiology to determine the role of these cells in the transmission of pruriceptive information. One hundred eleven STT neurons were identified by antidromic stimulation...