Adrenaline Archives

Tag: Adrenaline

Also called epinephrine. Adrenaline and noradrenline are two separate but related hormones and neurotransmitters. They are produced in the centre (medulla) of the adrenal glands and in some neurons of the central nervous system. They are released into the bloodstream and serve as chemical mediators, and also convey the nerve impulses to various organs. Adrenaline has many different actions depending on the type of cells it is acting upon. However, the overall effect of adrenaline is to prepare the body for the ‘fight or flight’ response in times of stress, i.e. for vigorous and/or sudden action. Key actions of adrenaline include increasing the heart rate, increasing blood pressure, expanding the air passages of the lungs, enlarging the pupil in the eye (see photo), redistributing blood to the muscles and altering the body’s metabolism, so as to maximise blood glucose levels (primarily for the brain). A closely related hormone, noradrenaline, is released mainly from the nerve endings of the sympathetic nervous system (as well as in relatively small amounts from the adrenal medulla). There is a continuous low level of activity of the sympathetic nervous system resulting in release of noradrenaline into the circulation, but adrenaline release is only increased at times of acute stress. See also noradrenline

Awareness, Living with Neuroendocrine Cancer, Patient Advocacy, TreatmentAdrenal medulla, Adrenaline, Carcinoid crisis, Carcinoid syndrome, Carcinoid tumour, Cardiopulmonary hemodynamic instability, Catecholamines, Chromaffin cells, Cortisol, Epi pens, Epinephrine, Hormonal crisis, Hormones, Hypertension, Hypotension, Intraoperative hypertensive crisis, NET syndromes, Neuroendocrine tumour (NET), Norepinephrine, Pheochromocytoma, Pressor amines, Serotonin, Somatostatin analogues, The 5 E's, Thorson-Bioerck syndrome, Vasoactive amines, Vasoactive peptides

Neuroendocrine Tumour (NET) – don’t let it be a Crisis

By Ronny Allan Oct 22, 2024 6 Comments

Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, SurvivorshipAdrenaline, Amines, Ascending colon, Biogenic amines, Carcinoid crisis, Carcinoid syndrome, Catecholamines, Diet, Dopamine, Histamine, Hormones, Malabsorption, Neuroendocrine cancer, Neuroendocrine tumour (NET), Nutrition, Pressor amines, Probiotic, Quality of LIfe (QoL), Right hemicolectomy, Serotonin, Small intestine bacterial overgrowth (SIBO), Small intestine NET (SI NET), Somatostatin analogues, Surgery, Tryptophan, Tyramine, Vasoactive amines

Neuroendocrine Cancer Nutrition Series Part 4 – Amines: Food for Thought?

By Ronny Allan Jun 12, 2024 4 Comments

Reviewed and updated 23rd January 2024 Neuroendocrine Cancer Nutrition Series Part 4 – Amines: Food for Thought? Background Nutrition is an important subject for many cancers, but it can be particularly important for many Neuroendocrine Cancer patients. When I started writing my nutrition series (listed below), I said that my intention is not to tell you what to eat, even though that might be a challenge for many, and this theme continues. The issue with Nutrition and Diet, in general, is that it's very individual and what works for one may not work for another. Often the the best diet…

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Neuroendocrine Cancer – Horrible Hormones

By Ronny Allan Mar 22, 2024 15 Comments

Updated and reviewed 20th March 2024 Hormonal imbalances are quite common in many conditions including day to day stuff. With Neuroendocrine Cancer, it can be a real challenge both at diagnostic and maintenance phases. In addition to the cancer angle, there's some strange stuff going on, inexplicable, frightening for the patient, an unwanted ingredient causing chaos! Until I was diagnosed with metastatic Neuroendocrine Cancer, I didn't have a clue about hormones - it's one of those things you just take for granted. However, hormones are vital to human health (male and female) and it's only when things go wrong you…

A spotlight on NENs - Types, Awareness, Patient Advocacy, Spotlight on NENs - Types Series123I-Metaiodobenzylguanidine (mIBG), 131I-Metaiodobenzylguanidine (mIBG), 18F-FDG, 18F-FDOPA, 24-hour urinary catacholamines and metanephrines, Adrenal glands, Adrenal medulla, Adrenaline, Adrenocortical Carcinoma (ACC), Anxiety, AZEDRA, Catecholamines, EPAS1, Epinephrine, Familial NET, FH, Ga68 PET/CT, Genetics, Hormonal crisis, Hormones, Hyperadrenergic, Hypertension, Intraoperative hypertensive crisis, Iobenguane I 131, MDH2, MEN2 syndrome, MIBG scan, Multiple Endocrine Neoplasia (MEN), Nausea, Neuroendocrine, Neuroendocrine cancer, Neuroendocrine carcinoma (NEC), Neuroendocrine tumour (NET), NF1, Octreotide scan, Palpitation, Pheochromocytoma, RET, Scan, SDHA, SDHAF2(SDH5), SDHB, SDHC, SDHD, Somatostatin analogues, Surgery, Sweating, Tachycardia, The 5 E's, Vanillylmandelic acid (VMA), Von Hippel-Lindau (VHL) Syndrome

Neuroendocrine Tumours: a spotlight on Pheochromocytoma and Paraganglioma

By Ronny Allan Dec 14, 2016 4 Comments

Updated 19th August 2025 I spend a lot of time talking about the most common forms of Neuroendocrine Tumours (NETs), but what about the less well-known types? As part of my commitment to all types of NETs, I'd like to shine a light on two less common tumour types known as Pheochromocytomas and Paragangliomas - with an incidence rate of approximately 8 per million per year. They are normally grouped together, and the definitions below will confirm why. If you think it's difficult to diagnose a mainstream NET, this particular sub-type is a real challenge. So, let's get definitions out…