Oxytocin is an endogenous neuropeptide and hormone that plays a key role in regulating social connections, emotional state, stress response, and reproductive processes. It is synthesized in the hypothalamus and is one of the fundamental regulators of human behavior, influencing trust, empathy, attachment, and a sense of security. Within the framework of modern health and longevity programs, oxytocin is considered as a bioregulator of psycho-emotional balance and social adaptation.
Oxytocin is a hormone produced in the hypothalamus that stimulates uterine contractions during childbirth and the release of milk during breastfeeding. It is often referred to as the "love hormone" because research shows that it promotes the formation of social bonds, trust, and emotional attachment. This neuropeptide functions as a hormone and neurotransmitter, influencing various social behaviors and biological processes in laboratory research.
The classification of Oxytocin as exclusively a neurohypophysial hormone is becoming increasingly outdated as scientific knowledge develops. Modern research shows that Oxytocin functions more precisely as a multifaceted signaling peptide with central and peripheral action.
General information
| Features | Values |
|---|---|
| The peptide sequence | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (disulfide bridge: 1-6) |
| The molecular formula | C43H66N12O12S2 |
| Molecular weight | 1007.2 g/mol |
| CAS Number | 50-56-6 |
| PubChem CID | 439302 |
| Synonyms | Endopituitrina, Ocytocin, Oxytocinum, Orasthin |
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Product Usage:
This product is intended solely for research purposes. All product information provided on this website is intended for educational purposes.
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Oxytocin opens up great research opportunities, as its properties have been well studied in the context of reproduction, social behavior, and mechanisms of emotional regulation. Recent research has expanded the scope of its application to include stress response mechanisms, the study of metabolic pathways, and research methodologies for mental disorders.
Oxytocin demonstrates its role as a key modulator of both social and non-social behavior, providing complex, context-dependent effects suitable for various research tasks.
Reproductive and physiological research
Studies demonstrate the important role of oxytocin in the mechanisms of uterine contraction, the ways milk is secreted, and its effect on energy metabolism, thermogenesis, and muscle function. Studies show that it acts through a single receptor (OXTR), triggering various cellular signaling pathways that affect both the brain and peripheral organs.
Research on stress response and recovery
Research results show that Oxytocin reduces anxiety-related behaviors and stress-related physiological responses.
Although observations show that Oxytocin does not always reduce initial stress reactivity, higher levels of Oxytocin correlate with faster recovery of autonomic function (e.g., vagal tone) after exposure to stress, indicating research opportunities in the field of resistance and recovery mechanisms rather than buffering stress reactivity.
Social interaction studies that increase Oxytocin release demonstrate a reduction in behavioral and hormonal stress responses, an effect mediated by Oxytocin in hypothalamic studies.
Research on social and emotional behavior
Studies show that Oxytocin promotes maternal care, pair bonding, and social memory in different species. Research demonstrates its important role in the processes of parenting, attachment, and recognition of relatives.
Oxytocin studies reveal anxiolytic and anti-stress effects, especially in studies of the amygdala and hypothalamus, involving the regulation of emotional responses, including trust, empathy, and moral emotions.
Wound Healing Studies
Laboratory data show that Oxytocin reduces inflammation and oxidative stress, as evidenced by decreased levels of TNF-α, MMP-2, PTX3, and malondialdehyde, as well as increased levels of TIMP-2 in oral ulcer models. This modulation contributes to improved tissue organization and accelerated healing, probably due to the MMP-2/TIMP-2 pathway and extracellular matrix remodeling studies.
Studies show that Oxytocin, whose level increases under the influence of certain intestinal microbes, activates regulatory T cells (CD4+Foxp3+CD25+), which can transmit wound healing ability in the laboratory, which highlights the possibilities of applying research in the field of the gut-brain-immunity axis.
Allostatic regulation
Laboratory studies show that Oxytocin allows organisms to anticipate and adapt to future environmental changes, rather than simply responding to disturbances. Research applications include changing physiological parameters and studying the modulation of behavior to maintain stability under dynamic conditions.
Oxytocin's research contributes to the processing of both social and non-social cues, supporting research on learning, prediction, and agile response necessary for research on survival in a changing environment.
Research on mental disorders
Oxytocin has been investigated in the context of autism spectrum disorders, schizophrenia, mood disorders (including depression and bipolar disorder), anxiety disorders, post-traumatic stress disorder, eating disorders, and borderline personality disorder.
Metabolic effects of oxytocin
Laboratory studies show that oxytocin enhances insulin secretion, especially in conditions of high glucose concentration, partly by stimulating intracellular secretion of GLP-1, which confirms the importance of glucose control studies. It improves beta-cell reactivity and glucose tolerance in experimental models by increasing early reactions of insulin and C-peptide to glucose.
Oxytocin increases glucose uptake and lipid utilization in adipose tissue and skeletal muscles, contributing to improved insulin sensitivity and reduced fat accumulation.
Oxytocin reduces the expression of genes related to appetite and gluconeogenesis, such as FBN1 and PEPCK, which further confirms the importance of metabolic research.
Studies of intranasal oxytocin administration have led to the observation of weight loss and reversal of prediabetic changes, while in mouse models oxytocin and its analogues reversed insulin resistance and glucose intolerance regardless of weight loss.
Links
1. Jurek, B., & Neumann, I. (2018). The Oxytocin Receptor: From Intracellular Signaling to Behavior.. Physiological reviews, 98 3, 1805-1908 . https://doi.org/10.1152/physrev.00031.2017.
2. Onaka, T., & Takayanagi, Y. (2021). Roles of Oxytocin in Stress Responses, Allostasis and Resilience. International Journal of Molecular Sciences, 23. https://doi.org/10.3390/ijms23010150.
3. Wang, Z., & Smith, A. (2014). Hypothalamic Oxytocin Mediates Social Buffering of the Stress Response. Biological Psychiatry, 76, 281-288. https://doi.org/10.1016/j.biopsych.2013.09.017.
4. Neumann, I. (2008). Brain Oxytocin: A Key Regulator of Emotional and Social Behaviours in Both Females and Males. Journal of Neuroendocrinology, 20. https://doi.org/10.1111/j.1365-2826.2008.01726.x.
5. Kendrick, K., & Yao, S. (2025). How does oxytocin modulate human behavior?. Molecular psychiatry. https://doi.org/10.1038/s41380-025-02898-1.
6. Erbaş, O., Bora, E., Zeytinoğlu, M., & Çınaroğlu, O. (2025). Healing with Love: Oxytocin Accelerates Oral Ulcer Recovery by Reducing Inflammation. Journal of Clinical Medicine, 14. https://doi.org/10.3390/jcm14082667.
7. Chatzigiagkos, A., Poutahidis, T., Alm, E., Ibrahim, Y., Lakritz, J., Erdman, S., Levkovich, T., Qi, P., Varian, B., & Kearney, S. (2013). Microbial Symbionts Accelerate Wound Healing via the Neuropeptide Hormone Oxytocin. PLoS ONE, 8. https://doi.org/10.1371/journal.pone.0078898.
8. Quintana, D., & Guastella, A. (2020). An Allostatic Theory of Oxytocin. Trends in Cognitive Sciences, 24, 515-528. https://doi.org/10.1016/j.tics.2020.03.008.
9. Carbone, M., Diep, P., Marazziti, D., & Carter, S. (2022). Oxytocin: An Old Hormone, A Novel Psychotropic Drug And Possible Use In Treating Psychiatric Disorders.. Current medicinal chemistry. https://doi.org/10.2174/0929867329666220727120646.
10. Misaka, S., Yokota, S., Tezuka, K., Maejima, Y., Okano, T., Hidema, S., Yamachi, M., Shimizu, M., Fukushima, T., Kanai, K., Hattori, K., & Shimomura, K. (2025). Oxytocin modulates insulin and GLP-1 secretion in pancreatic islets.. Aging, 17. https://doi.org/10.18632/aging.206244.
11. Klement, J., Cobelli, C., Lehnert, H., Piccinini, F., Hallschmid, M., Brede, S., Ott, V., & Rapp, K. (2016). Oxytocin Improves β-Cell Responsivity and Glucose Tolerance in Healthy Men. Diabetes, 66, 264 – 271. https://doi.org/10.2337/db16-0569.
12. Ding, C., Leow, M., Magkos, F., & Magkos, F. (2018). Oxytocin in metabolic homeostasis: implications for obesity and diabetes management. Obesity Reviews, 20, 22 – 40. https://doi.org/10.1111/obr.12757.
13. Embark, H., Cavalu, S., El-Dawy, K., Alamery, S., Batiha, G., Mickdam, E., Fouad, S., Rehan, I., El-Belbasi, H., Al-Amgad, Z., Elnagar, A., Shanab, O., & Youssef, M. (2022). Ameliorative Effect of Oxytocin on FBN1 and PEPCK Gene Expression, and Behavioral Patterns in Rats’ Obesity-Induced Diabetes. Frontiers in Public Health, 10. https://doi.org/10.3389/fpubh.2022.777129.
14. Wu, C., Cai, D., Xu, Z., Chen, Q., Zhang, H., Wu, J., & Chen, X. (2013). Treatment of Obesity and Diabetes Using Oxytocin or Analogs in Patients and Mouse Models. PLoS ONE, 8. https://doi.org/10.1371/journal.pone.0061477.