Oxytocin

About Oxytocin

Oxytocin is a cyclic nonapeptide hormone that your body naturally makes in the hypothalamus and releases through the posterior pituitary gland. You've probably heard it called the 'love hormone' — and there's good reason for that nickname. This little molecule contains nine amino acids with a crucial disulfide bridge between cysteine residues at positions 1 and 6. That bridge isn't just structural decoration; it's what keeps the hormone stable and biologically active. Here's how it works: oxytocin binds to oxytocin receptors (OXTR), which kicks off phospholipase C pathways and gets calcium moving around cells. Pretty neat molecular machinery. Researchers use oxytocin to dig into all sorts of fascinating areas. They're looking at how social bonds form, what drives maternal behaviour, how we handle stress, and even neuroplasticity. The findings are quite remarkable — studies show oxytocin genuinely affects trust formation, boosts empathy, and helps establish pair-bonds in lab models. But that's not all. Scientists have explored its neuroprotective properties and potential applications in autism spectrum disorder research. There's also ongoing work on reproductive physiology, labour induction mechanisms, and how the hypothalamic-pituitary-adrenal axis works. Our pharmaceutical-grade oxytocin comes as a sterile lyophilised powder with >98% purity — we've verified this through HPLC analysis. Each vial contains precisely measured quantities that you can reconstitute in sterile water or buffer solutions. Storage is straightforward but critical: keep it at -20°C to maintain the peptide's integrity. Remember, this is strictly for in vitro research applications only.

Research Applications

• Investigated for activity at oxytocin and vasopressin V1a receptors in vitro
• Studied for association with social-bonding and pair-affiliation behaviour in rodent models
• Researched for influence on uterine and mammary smooth-muscle signalling assays
• Associated with modulation of stress-axis and cortisol biomarkers in preclinical models
• Investigated for involvement in maternal-behaviour neural circuitry research
• Studied for effects on amygdala-related fear and anxiety biomarkers

Research Mechanism — Oxytocin

A simplified summary of what Oxytocin is studied for in research models. For laboratory in-vitro use only.

1. 1

   Molecular target

   Oxytocin binds the OXTR, a class A Gq-coupled GPCR, with cross-reactivity at vasopressin V1a receptors. The intramolecular disulphide bridge is required for receptor engagement.

   • OXTR (oxytocin receptor) — Gq/PLC signalling
   • V1a receptor cross-reactivity at higher concentrations
   • Disulphide-stabilised cyclic conformation required
2. 2

   Investigated pathways

   Research explores OXTR signalling through PLC-IP3, intracellular calcium release and downstream MAPK cascades. Central and peripheral OXTR populations are studied separately.

   • PLC-beta / IP3 / DAG and calcium mobilisation
   • MAPK (ERK1/2) and PI3K downstream signalling
   • Hypothalamic-limbic circuit modulation in rodents
3. 3

   Preclinical research applications

   Investigated in animal models of social behaviour, pair-bonding, stress reactivity and uterine smooth-muscle physiology. Not approved for human use.

   • Rodent social recognition and pair-bonding paradigms
   • HPA-axis and corticosterone response models
   • Uterine and mammary smooth-muscle ex vivo assays

For research use only. Oxytocin is not approved as a medicine in the UK and is not intended for human or veterinary administration. See the compliance page for full terms.