Tag: Oxytocin

Oxytocin is produced in the hypothalamus and is secreted into the bloodstream by the posterior pituitary gland. Secretion depends on electrical activity of neurons in the hypothalamus – it is released into the blood when these cells are excited.

The two main actions of oxytocin in the body are contraction of the womb (uterus) during childbirth and lactation. Oxytocin stimulates the uterine muscles to contract and also increases production of prostaglandins, which increase the contractions further. Manufactured oxytocin is sometimes given to induce labour if it has not started naturally or it can be used to strengthen contractions to aid childbirth. In addition, manufactured oxytocin is often given to speed up delivery of the placenta and reduce the risk of heavy bleeding by contracting the uterus. During breastfeeding, oxytocin promotes the movement of milk into the breast, allowing it to be excreted by the nipple. Oxytocin is also present in men, playing a role in sperm movement and production of testosterone by the testes.

More recently, oxytocin has been suggested to be an important player in social behaviour.

In the brain, oxytocin acts as a chemical messenger and has been shown to be important in human behaviours including sexual arousal, recognition, trust, anxiety and mother–infant bonding. As a result, oxytocin has been called the ‘love hormone’ or ‘cuddle chemical’.

Many research projects are undertaken, looking at the role of oxytocin in addiction, brain injury, anorexia and stress, among other topics.

05Sep 2020 by Ronny Allan No Comments

Flower power and the happy hormones

Inspiration, Living with Neuroendocrine Cancer

A sunflower picture from 2015 which I planted with my own hands, and it grew taller than me (not difficult), even taller than my garden fence (more difficult). Of course, I have to mention my wife Chris because she does infinitely more gardening than I do, and she would have nurtured the sunflower from start to finish after I planted it. Nonetheless, I still felt a remarkably close association with the outcome! My most liked Facebook posts in 2020 (the year of COVID) related to plant and forest pictures and there is a reason flowers proved to be more popular than my other posts. Flowers, particularly with vibrant colour, stimulate our happiness hormones, including serotonin. Now, serotonin has a bad press in the Neuroendocrine Cancer world, but it's a really important…

What is Chromogranin A? Chromogranin A (CgA) is an acidic protein released along with catecholamines from chromaffin cells and nerve terminals. This statement alone might explain why it’s a good marker to use with Neuroendocrine Neoplasms. It is said to be a measure of tumour bulk. Depending on the test kit being used, you may […]

Neuroendocrine Cancer: Catch them early, not late!

Diagnosing Neuroendocrine Neoplasms (NENs). It’s no secret that Neuroendocrine Neoplasms (NENs) can be difficult to diagnose, particularly well differentiated slow growing types (NETs) which can sometimes be difficult to see. Plus, many patients present with relatively routine day to day symptoms suggesting a myriad of day-to-day illnesses seen daily in every GP/PCP practice. But conversely, […]

A spotlight on Rectal Neuroendocrine Neoplasms

What are Rectal NENs Rectal Neuroendocrine Neoplasms (NENs) (rNENs) account for approximately 1-2% of all primary cancers in the rectum. The other main cancer types found in the rectum are regular adenocarcinomas (the vast majority) and some other rare types including Gastrointestinal stromal tumors (GIST) and Lymphoma. The vast majority of rNENs will be well […]

Clinical Trial: Novel Somatostatin Receptor Subtype 2 Antagonist Labelled With Terbium-161 (161Tb-DOTA-LM3) (Beta plus)

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Repeat after me: Maria Menounos has Neuroendocrine Cancer

Like many people from outside USA, I don’t really know anything about Maria Menounos. For those in the same boat, let me confirm she is a very well-known personality in USA. A journalist, television presenter and actress. She has hosted Extra and E! News; she was a TV correspondent for Today, Access Hollywood, and co-hosted […]