Purpose of the study. Was to analyze levels biogenic amines (serotonin and its metabolite 5-HIAA, dopamine, norepinephrine histamine) in lung tissues patients with cancer previous COVID-19 infection. Patients methods. The study was carried out on samples intact tissues, tumor peritumoral obtained during open biopsy while performing radical surgery from morphologically verified non-small cell (N...

Plasma levels of serotonin are elevated in primary pulmonary hypertension even after bilateral lung transplantation, suggesting a possible etiologic role. Serotonin is released primarily from the small intestine. Anorectic agents, such as dexfenfluramine, which can cause pulmonary hypertension, are known to inhibit potassium channels in vascular smooth muscle cells. We examined the hypothesis t...

We investigated the modulatory effects of serotonin on the tuning of 114 neurons in the central nucleus of the inferior colliculus (ICc) of Mexican free-tailed bats and how serotonin-induced changes in tuning influenced responses to complex signals. We obtained a "response area" for each neuron, defined as the frequency range that evoked discharges and the spike counts evoked by those frequenci...

A full-length serotonin receptor mRNA from the 5Hthpr gene was sequenced from larvae of the sea urchin, Hemicentrotus pulcherrimus. The DNA sequence was most similar to 5HT-1A of the sea urchin Strongylocentrotus purpuratus found by The Sea Urchin Genome Project, and the protein sequence predicted the presence of seven transmembrane domains. Immunohistochemistry with anti-5HThpr antibodies indi...

Serotonin [5-hydroxytryptamine (5-HT)] plays an important role in many organs as a peripheral hormone. Most of the body's serotonin is circulating in the bloodstream, transported by blood platelets and is released upon activation. The functions of serotonin are mediated by members of the 7 known mammalian serotonin receptor subtype classes (15 known subtypes), the serotonin transporter (SERT), ...

This literature review presents data on the influence of serotonin metabolism bone tissue. The mechanisms by which affects formation and resorption bone, depending site synthesis (central or peripheral), as well cells receptor subtypes that are activated, have been considered. A number issues for further research highlighted, in particular, dose-response relationship side effects during chronic...

The mechanisms of action of two different serotonin receptors, found in a neuronal cell line (neuroblastoma X glioma hybrid cells) and in a non-excitable glioma cell line, were explored. In both cell lines, serotonin induced a dose-dependent, transient rise of cytosolic Ca2+ activity (measured by fura-2 or indo-1 fluorescence). Ca2+ channel blockers (Ni2+ and La3+, not nifedipine) suppressed th...

Serotonin (5-HT), a mono-aminergic neurotransmitter is biochemically derived from tryptophan and is mainly found in gastrointestinal tract, platelets and central nervous system of animals. Serotonin (5-HT) in coordination with hypothalamus plays an important role in the CNS control of appetite, eating behavior, and energy balance and body weight. It has a special role in control of carbohydrate...

Serotonin (5-hydroxytryptamine) is an endogenous compound located mainly in the enterochromaffin cells of the gastrointestinal tract, serotonergic neurons, and platelets. Physiologically 5-HT acts as a neurotransmitter, neuromodulator and vasoconstrictor [1]. Imaging studies related to the processes of synthesis and serotonin sequestering/release from secretory vesicles are essential for the un...