Norepinephrine Archives

Tag: Norepinephrine

A chemical made by some nerve cells and in the adrenal gland. It can act as both a neurotransmitter (a chemical messenger used by nerve cells) and a hormone (a chemical that travels in the blood and controls the actions of other cells or organs). Norepinephrine is released from the adrenal gland in response to stress and low blood pressure. Also called noradrenaline.

22 Oct 2024

By Ronny Allan

6 Comments

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

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

Update February 2026. Before you read this, please note: Why Practice Is Changing Faster Than the Guidelines Modern peri‑operative management for neuroendocrine tumours is evolving rapidly, and several factors explain why clinical practice in some expert centres has moved ahead of formal guidelines: 1. New evidence challenges long‑held assumptions Recent surgical series — most prominently from OHSU Portland USA — show that prophylactic octreotide does not reliably prevent carcinoid crisis and that crises behave more like distributive shock, responding better to vasopressors than to somatostatin analogues. This directly contradicts decades of dogma. 2. Guidelines update slowly by design Bodies such…

29 Aug 2024

By Ronny Allan

20 Comments

Serotonin – the NET effect

Diet and Nutrition, Living with Neuroendocrine Cancer, Patient Advocacy, The NET Effect Series5-HIAA, 5-HT, 5-HTP, 5-Hydrotryptophan (5-HTP), 5-Hydroxyindoleacetic Acid (5-HIAA), 5-Hydroxytryptamine (5-HT), Antidepressant, Anxiety, Blood brain barrier (BBB), Bradykinin, Brain serotonin, Cancer anger, Carcinoid heart disease, Carcinoid rage, Carcinoid syndrome, Depression, Desmoplasia, Diarrhea, Dopamine, Endocrine, Flushing, Foregut, Hindgut, Histamine, Hormones, Monoamine oxidase inhibitors (MAOIs), NET syndromes, Neuroendocrine, Neurotransmitter, Norepinephrine, Nutrition, Oxitriptan, Prostaglandin, Selective Serotonin Reuptake Inhibitor (SSRI), Serotonin, Serotonin and norepinephrine reuptake inhibitor (SNRI), Serotonin syndrome, Serum serotonin, St. John's wort, Thorson-Bioerck syndrome, TPH1, TPH2, Tricyclic antidepressant, Tryptophan, Tryptophan hydroxylase (TPH)

Background I'd never heard of Serotonin until I was diagnosed with Neuroendocrine Cancer in 2010. It is frequently discussed, often with contrasting views from the respondents. One common assumption/question is that it is responsible for many things that can go wrong with Neuroendocrine Tumour (NET) patients who have serotonin-producing tumours. To a certain extent, that's true but statement such as "it's the hormones" is an easy assumption to make; or an easy answer to give in response to a complex set of circumstances. It's difficult to get a definitive answer and the science behind the behaviour of our hormones isn't…

22 Mar 2024

By Ronny Allan

15 Comments

Neuroendocrine Cancer – Horrible Hormones

Patient Advocacy24-hour urinary catacholamines and metanephrines, 5-HIAA, 5-Hydrotryptophan (5-HTP), Addison's disease, Adrenal insufficiency, Adrenaline, Adrenocorticotropic Hormone (ACTH), Aldosterone, Anaphylactic shock, Androgrens, Antihistamines, Appendiceal NET, Bradykinin, Calcitonin, Calcitonin gene-related peptide (CGRP), Carcinoid crisis, Carcinoid heart disease, Carcinoid syndrome, Catecholamines, Chromogranin A (CgA), Corticotrophin releasing hormone (CRH), Cushing's disease, Cushing's syndrome, Diarrhea, Endocrine, Enterochromaffin cells, Epinephrine, Estrogen, Fight or flight, Flushing, Ga68 PET/CT, Gastric NET, Gastrin, Glucagon, Histamine, Hormones, HPA axis, Hyperparathyroidism, Hypocortisolism, Hypotension, Hypothalamus, Insulin, Intraoperative hypertensive crisis, Islet cell, Islet of Langerhams, Kallikrein, Lanreotide, Lung NETs, Malabsorption, Mast cell, Medullary thyroid cancer (MTC), Metanephrines, Multiple Endocrine Neoplasia (MEN), NET syndromes, Neuroendocrine, Neuroendocrine neoplasm (NEN), Neurokinin A (NKA), Neuropeptide K, Neurotensin, Neurotransmitter, Norepinephrine, Nutrition, Octreotide, Octreotide scan, Ovarian NEN, Pancreastatin, Pancreatic NET (PanNET), Pancreatic polypeptide (PP), Paraganglioma, Pellagra, Peptide, Pheochromocytoma, PPoma, Prostaglandin, Pruritus, Serotonin, Somatostatin, Somatostatinoma, Substance P, Tachycardia, Tachykinin, Telotristat ethyl (Xermelo), Testosterone, The 5 E's, Tryptophan, Vasoactive intestinal peptide (VIP), Vasodilation, VIPoma, Xermelo (Telotristat ethyl)

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…