Serotonin

Serotonin is one of several chemical messengers in the brain, or neurotransmitters, which help brain cells communicate with one another. Among many other functions, serotonin is involved in regulating mood. Problems with making or using the right amount of serotonin have been linked to many mental disorders, including depression, bipolar disorder, anxiety disorder, autism, and schizophrenia.

What is Serotonin?

Serotonin is an example of a neurotransmitter, a chemical messenger that is passed between nerve cells. When a nerve impulse reaches the axon at the end of a nerve, neurotransmitters are released which cross an area called the synapse to be received by a specific receptor on the end of a target nerve. Once received by the target nerve, the neurotransmitter may either excite that nerve to fire its own signal or prevent it from firing the signal.

Serotonin Function

Serotonin Biosynthesis

Drugs Targeting the 5-HT System

Serotonin Pathology

Serotonin in Plants

The Relationship Between Serotonin and 5-HTP

Do Serotonin and Antidepressants Affect the Microbiome?

Latest Serotonin News and Research

Research team identifies a molecule that directs neurons

The habenula is a small region at the centre of the brain, but is crucial for people's lives. It is made up of groups of nerve cells that control the "neurotransmitters" of the brain, that is to say substances like dopamine, noradrenaline and serotonin.

24 Mar 2020

New drug can alleviate the side effects of tricyclic antidepressants

About one in five Danes are affected by depression at some point in their lives. The severe depressions may be treated with the so-called 'tricyclic antidepressants', an antidepressant drug that is more effective than the drugs used for mild and moderate depressions.

22 Mar 2020

Scientists map novel structure of so-called 'neurotransmitter: sodium symporter’

A novel structure of a so-called 'neurotransmitter: sodium symporter’ has been mapped at the University of Copenhagen.

6 Mar 2020

Researchers uncover novel neurotransmitter system in the brain

Neurotransmitters are chemicals that transmit signals between neurons or from neurons to other cells. They interact with specific receptors found in the brain of humans and animals, controlling a variety of biological processes, e.g. fear, anger, pleasure, memory, energy, appetite and sleep.

5 Mar 2020

Antidepressant shows promise in helping men with recurrent prostate cancer

An antidepressant in use for decades, repurposed to fight prostate cancer, shows promise in helping patients whose disease has returned following surgery or radiation, a pilot study at USC shows.

4 Mar 2020

Experimental drug offers hope for improving movement symptoms of Parkinson's

Results from a study looking at an experimental drug to tackle the debilitating side effect of dyskinesia, have offered hope that it may have potential as a future treatment for people with Parkinson's.

2 Mar 2020

Using 'mini-brains' to detect harmful neurodevelopmental effects of antidepressant

Researchers at Johns Hopkins Bloomberg School of Public Health have demonstrated the use of stem-cell-derived "mini-brains" to detect harmful side effects of a common drug on the developing brain.

21 Feb 2020

Using a simple model to study how serotonin modulates behavior

In popular experience the story of how serotonin modulates the brain might seem simple: pop an antidepressant, serotonin levels go up, mood improves. But neuroscientists acknowledge how little they know about how the neurotransmitter affects circuits and behavior in the incredibly complex human brain.

20 Feb 2020

Increase in out-of-pocket costs associated with lower adherence to neurologic medications

As out-of-pocket costs go up for drugs for the neurologic disorders Alzheimer's disease, peripheral neuropathy and Parkinson's disease, people are less likely to take the drugs as often as their doctors prescribed, according to a study funded by the American Academy of Neurology and published in the February 19, 2020, online issue of Neurology, the medical journal of the American Academy of Neurology.

19 Feb 2020

BPA-free plastic products aren't safe for people to use, scientists warn

Using "BPA-free" plastic products could be as harmful to human health -- including a developing brain -- as those products that contain the controversial chemical, suggest scientists in a new study led by the University of Missouri and published in the Proceedings of the National Academy of Sciences.

19 Feb 2020

Scientists use toxin from rattlesnake venom for chronic pain

Rattlesnake (Crotalus adamanteus) is the largest venomous snake in North America, reaching 8 feet and weighing up to 10 pounds. In the past, medical experts believe that the toxin in rattlesnake venom, crotoxin, is a promising compound for the treatment of chronic pain.

18 Feb 2020

Depression treatment using AI, brain scans

Artificial intelligence (AI) may be a useful and even essential tool in selecting the best treatment for depression, according to a new study published in the journal Nature Biotechnology on February 2020.

10 Feb 2020

Study sheds new light on genetic relationship between three mood disorders

Researchers shed new light on the genetic relationship between three mood disorders associated with depression--major depression and bipolar disorder types 1 and 2, in a new study in the journal Biological Psychiatry, published by Elsevier.

5 Feb 2020

Shift workers at increased risk for sleep disorders and metabolic syndrome

Shift workers are at a significantly increased risk for sleep disorders and metabolic syndrome, which increases a person's risk for heart disease, stroke and type 2 diabetes mellitus.

3 Feb 2020

Non-hormonal options are effective in treating menopause symptoms

The classic symptoms of menopause – hot flashes, sleeplessness, and vaginal dryness – have typically been treated with estrogen therapy. Studies published today report that non-hormonal options are effective, too.

24 Jan 2020

Gut microbiome linked to behavioral problems in children

Children with behavioral problems may have different compositions in their gut microbiome, with parents playing a major role in how pronounced the differences were, other than the food they provide, a new study suggests.

21 Jan 2020

New analysis method shows how the brain regulates its signals using glutamate

Researchers at Chalmers University of Technology and Gothenburg University in Sweden have achieved something long thought almost impossible - counting the molecules of the neurotransmitter glutamate released when a signal is transferred between two brain cells. With a new analysis method, they showed that the brain regulates its signals using glutamate in more ways than previously realised.

21 Jan 2020