Serotonin HCl (5-HT) is a monoamine neurotransmitter and Endogenous 5-HT receptor agonist.
Serotonin HCl (5-HT) is a monoamine neurotransmitter and Endogenous 5-HT receptor agonist.
Serotonin stimulates acid–base transport by the anterior stomach region of the midgut in vitro. The function of this stimulation is assumed to be maintenance of optimal conditions for digestion and absorption of nutrients rather than regulation of hemolymph acid–base homeostasis. [1]
The role of serotonin in the regulation of larval Aedes aegypti hemolymph composition is investigated in vivo using two reuptake inhibitors (SSRIs), alaproclate HCl and 6-nitroquipazine maleate, and the receptor antagonist methiothepin mesylate. [1]
[1] Onken, H, et al. J Insect Sci, 2008, 8, 1-20.
For macrophage culture, peritoneal cavity cells are collected from WT and IL-13-/- mice with or without dextran sodium sulfate (DSS) treatment and cultured. Cells are plated at a concentration of 3.0×106 cells per millilitre, and treated with either lipopolysaccharides (LPS); (100 ng/mL) or Serotonin (10-10 M) for 24 hours. The culture supernatant are collected and stored in -80°C until determination of cytokine levels using protein array system[2].
Dextran sodium sulfate (DSS) colitis is induced by orally administering 5% DSS in drinking water for 5 days. In a separate experiment, IL-13-/- mice are injected subcutaneously with 100 mg/kg of Serotonin (5-HTP) twice daily for 8 days beginning 3 days prior to induction of DSS colitis; whereas, the control IL-13-/- mice receive saline as vehicle. Animals are anaesthetized prior to euthanization via cervical dislocation at the conclusion of each experiment or if they reach a predetermined end point (ie, loss of ≥20% body weight and/or significant deterioration of body condition)[2].
[1]. Tsao D, et al. Serotonin-induced hypersensitivity via inhibition of catechol O-methyltransferase activity. Mol Pain. 2012 Apr 13;8:25.
[2]. Shajib MS, et al. Interleukin 13 and serotonin: linking the immune and endocrine systems in murine models of intestinal inflammation. PLoS One. 2013 Aug 28;8(8):e72774.
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