oxytocin

Oxytocin (Syntocinon) is a mammalian neuropituitary hormone, a pleiotropic hypothalamic peptide and ligand for the oxytocin receptor, which contributes to labor, lactation, and pro-social behavior. Oxytocin has the ability to stimulate mammary secretion of breast milk, promote contraction of uterine smooth muscle during labor, and facilitate mothering.

[Arg8]-Vasotocin acetate is a hormone present in the neurohypophysis of nonmammalian vertebrates that is related to vasopressin and oxytocin.

GUANOSINE 3':5'-CYCLIC MONOPHOSPHATE SOD (cGMP sodium salt) , also known as cGMP, is a cellular regulatory agent and has been described as a second messenger. Its levels increase in response to a variety of hormones, including acetylcholine, insulin, and oxytocin. GUANOSINE 3':5'-CYCLIC MONOPHOSPHATE SOD activates protein kinase G (PKG) and modulates ion channel conductance, with signaling affecting diverse processes including smooth muscle relaxation and proliferation, phototransduction, and energy homeostasis.

Penicillide is a fungal metabolite originally isolated from Penicillium that has diverse biological activities. It is an inhibitor of calpain 2/m-calpain (IC50 = 7.1 μM) and acyl-coenzyme A:cholesterol acyltransferase (ACAT; IC50 = 22.9 μM). It is also an antagonist of oxytocin receptors (IC50 = 67 μM). Penicillide inhibits RNA synthesis in P388 murine leukemia cells.