The α2 adrenergic receptors which abundantly express in the CA1 region of the hippocampus play an important role in the regulation of sleep and memory retention processes. Based on the available evidence, the aim of our study was to investigate consequences of the activation and deactivation of CA1 α2 adrenergic receptors (by clonidine and yohimbine, respectively) on the impairment of memory re...

Chronic treatment of guinea pigs with morphine produces non-specific subsensitivity (tolerance) of the longitudinal smooth muscle myenteric plexus (LM/MP) preparation of the guinea pig ileum to morphine, clonidine and 2-chloroadenosine correlated with a partial depolarization of myenteric S neurons. The purpose of our investigation was to gain further evidence regarding the cellular mechanism o...

Monoamine oxidase B (MAO-B) was recently identified as a member of the family of imidazoline binding proteins. To localize the imidazoline binding domain on MAO-B, we labeled the domain with the imidazoline photoaffinity adduct [I]2-(3azido-4-iodophenoxy)methylimidazoline in rat and human liver and visualized labeled peptides by autoradiography/sodium dodecyl sulfate-polyacrylamide gel electrop...

Monoamine oxidase B (MAO-B) was recently identified as a member of the family of imidazoline binding proteins. To localize the imidazoline binding domain on MAO-B, we labeled the domain with the imidazoline photoaffinity adduct [125I]2-(3-azido-4-iodophenoxy)methylimidazoline in rat and human liver and visualized labeled peptides by autoradiography/sodium dodecyl sulfate-polyacrylamide gel elec...

BACKGROUND Both alpha(2)-adrenergic and non--alpha(2)-adrenergic mechanisms seem to be involved in the hypotensive effect of imidazoline-like drugs. This study aimed at investigating how these 2 mechanisms work together to modify blood pressure (BP). METHODS AND RESULTS LNP 509, which appeared in this study to be devoid of alpha(2A)-adrenergic activity, was administered to anesthetized rabbit...

Background—Both 2-adrenergic and non– 2-adrenergic mechanisms seem to be involved in the hypotensive effect of imidazoline-like drugs. This study aimed at investigating how these 2 mechanisms work together to modify blood pressure (BP). Methods and Results—LNP 509, which appeared in this study to be devoid of 2A-adrenergic activity, was administered to anesthetized rabbits and wild-type (WT) mi...

This symposium reviewed the fundamental principles, pharmacology, and clinical pharmacology of central alpha-adrenergic blood pressure regulating mechanisms. Fundamental principles Arterial baro- and chemoreceptor signals reach the nucleus of the tractus solitarius (NTS) via vagal and glossopharyngeal afferents. The NTS communicates with sympathetic preganglionic neurons in the spinal cord via ...

Abstract Introduction Pediatric Autoimmune Neuropsychiatric Disorder Associated with Streptococcus (PANDAS) is an acute-onset constellation of symptoms including obsessive-compulsive disorder and concurrent neuropsychiatric anxiety, emotional lability, behavioral regression. Sleep disturbances are common in PANDAS, suspected post-infectious inflammation that can decrease serotonin, increase dop...