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16ppt
16ppt

... Enzyme activity resumes after ca. 2 weeks, when new enzyme synthesized. • Newer MAOIs are reversible inhibitors, some are selective for one subtype. MAO-B selective reversible inhibitors do not require the same dietary restrictions. ...
Serotonin Syndrome - Utah Poison Control Center
Serotonin Syndrome - Utah Poison Control Center

... serotonin in the body is found in enterochromaffin cells in the GI tract. It is also found in platelets. Serotonin is found in plant and animal tissues as well as in many venoms.2 Vomiting, sleep, temperature regulation, appetite, mood, regulation of blood pressure, and the perception of pain are fu ...
All elements for protein synthesis are present in dendrites
All elements for protein synthesis are present in dendrites

... How can we tell if there are more extracellular monoamines in flies? -Look at their known functions ...
4._Bipolar_disorder_def
4._Bipolar_disorder_def

... malignant syndrome history, Parkinson´s syndrome, be carefull at patients with kidney and liver problems ...
4._Bipolar_disorder_def
4._Bipolar_disorder_def

... malignant syndrome history, Parkinson´s syndrome, be carefull at patients with kidney and liver problems ...
Depression Prescriber Questions Aug 2012
Depression Prescriber Questions Aug 2012

... When are TCAs to be used? As second or third line medications. What is the dosing phrase that best suits the TCAs? Go low and slow What is the usual dose calculation for TCAs? 3 mg / kg of body weight What are the medical concerns with TCA antidepressant medications? Overdose (30 to 40 times normal) ...
Clinical Cases in Toxicology
Clinical Cases in Toxicology

... Digoxin level ≥10ng/mL 6h post acute overdose or ≥15ng/mL at any time Chronic toxicity associated with significant arrhythmias or confusion Bradyarrhythmias unresponsive to atropine ...
Serotonin Syndrome - Clinician`s Brief
Serotonin Syndrome - Clinician`s Brief

... coingestion of ≥2 drugs that alter serotonin metabolism via different mechanisms (eg, selective serotonin reuptake inhibitors [SSRIs], monoamine oxidase inhibitors [MAOIs]), although overdose of single agents has also been reported.1-3 ■ In veterinary medicine, most SS cases result from accidental i ...
A Dangerous Triad: Sertraline, Mirtazapine and Methadone
A Dangerous Triad: Sertraline, Mirtazapine and Methadone

... nervous system due to the combined effects of the drugs. Nowadays, it is known that the serotonin syndrome is mediated primarily by the postsynaptic 5-HT1A receptors and secondarily by the 5-HT2A receptors either at the central nervous system (CNS) or peripherally, occurring exceptionally after taki ...
Pharm 22, 23- Drugs for Affective Disorders Depression
Pharm 22, 23- Drugs for Affective Disorders Depression

...  stimulates the sympathetic and parasympathetic nervous system  NE increases glutamate release  Drugs with anxiolytic or antipanic effects inhibit LC firing and decrease noradrenergic activity GABA receptor  The GABAA chloride ion channel is a protein complex pentameric form that has varying com ...
Antidepressant Drugs
Antidepressant Drugs

... -Brain amines particularly NE and 5HT are neurotransmitter in pathway that function in the expression of mood. -Functional decrease in activity of such amines result in depression while functional increase in activity result in mood elevation. ...
Antidepressant
Antidepressant

... Most antidepressant drugs potentiate, either directly or indirectly, the actions of in the brain. This led to the amine theory, which states that depression is due to a deficiency of monoamines, such as norepinephrine and serotonin, at certain sites in the brain. Conversely, the theory states that m ...
16 Antidepressants
16 Antidepressants

... Most MAOIs require avoiding tyramine containing foods since tyramine is oxidized by Most MAOIs require avoiding tyramine‐containing foods, since tyramine is oxidized by MAO.   Inhibition of MAO can result in high levels of tyramine, leading to hypertensive crisis  (high blood pressure, often termed  ...
Notes on EMF affecting melatonin via nitric oxide
Notes on EMF affecting melatonin via nitric oxide

... Nitric oxide is a highly reactive molecule, diffusible and therefore ubiquitous in the central nervous system. Consequently, nitric oxide or nitric oxide-derived nitrogen oxides must enter into contact with neuromodulators and they can modify these molecules, especially monoamines, and thus change t ...
Antidepressants and Sedatives David G. Standaert, MD, Ph.D
Antidepressants and Sedatives David G. Standaert, MD, Ph.D

... Selective serotonin reuptake inhibitors (SSRI’s) Bupropion Nonselective MAO inhibitors Non-pharmacological therapy ECT  Psychotherapy ...
Selective Serotonin-Reuptake Inhibitors
Selective Serotonin-Reuptake Inhibitors

... because of its potent antihistaminic activity but it does not cause the antimuscarinic side effects of TCA , or interfere with sexual function as do the SSRI , increase appetite and weight gain frequently occur. 3. Nefazodone and Trazodone. These agents are serotonin reuptake inhibitor. Their therap ...
Advanced L-Theanine Calm-Plex - ProHealth`s Advanced Medical
Advanced L-Theanine Calm-Plex - ProHealth`s Advanced Medical

... overall beneficial effect on improving mood, attention and memory. ...
Neurophysiology: Serotonin`s many meanings elude simple theories
Neurophysiology: Serotonin`s many meanings elude simple theories

... inhibition) and dopamine (putatively linked with reward and activation) playing opposing roles (Deakin and Graeff, 1991). However, there is both electrophysiological and optogenetic evidence that serotonin is involved in many other roles, such as rhythmic motor activity (Ranade and Mainen, 2009). Th ...
Questions and Answers From Episode 6
Questions and Answers From Episode 6

... 4) The prime suspect in this mystery is made from what amino acid? Name two foods that serve as a source of this amino acid. Answer: Serotonin is synthesized from the amino acid tryptophan. Two important food sources are bananas and turkey. Teacher aid: Virtually all meats, including most fish, are ...
Bez nadpisu - Univerzita Karlova
Bez nadpisu - Univerzita Karlova

... cholinergic cation channels). Antagonists acting at this receptor have proved to be useful antiemetic drugs. ...
- Acute Medicine @ BHH
- Acute Medicine @ BHH

... caused by introduction of CYP450 inhibitors in patients on SSRIs 3. when running out of options in TCA/CCB/BB ...
Chem 491 presentation
Chem 491 presentation

... caapi and P. harmala are reversible inhibitors of MAO-A found in the CNS and MAO-B found in the gastrointestinal tract Evidence: clinical trial by McKenna, Towers, and Abbott (1984) Effects:Beta-carbolines from P. harmala alone elicit a sedative, valium-like psychoactivity, in constrast to B. caapi ...
Serotonin or 5-hydroxytryptamine
Serotonin or 5-hydroxytryptamine

... Acetic Acid ...
antidepressant drug overdoses
antidepressant drug overdoses

... Antidepressants are divided into groups depending on their effects on the central nervous system (CNS) neurotransmitters dopamine, epinephrine, norepinephrine, and serotonin. Abnormal levels of these neurotransmitters are associated with depression, migraine, bipolar disorder, and anxiety. An antide ...
Antidepressant Drugs
Antidepressant Drugs

... Almost all NE pathways in the brain originate from the cell bodies of neuronal cells in the locus coereleus in the midbrain, which send their axons diffusely to the cortex, cerebellum and limbic areas (hippocampus, amygdala, hypothalamus, thalamus). Mood: -- higher functions performed by the corte ...
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Serotonin



Serotonin /ˌsɛrəˈtoʊnɨn/ or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter. Biochemically derived from tryptophan, serotonin is primarily found in the gastrointestinal tract (GI tract), blood platelets, and the central nervous system (CNS) of animals, including humans. It is popularly thought to be a contributor to feelings of well-being and happiness.Approximately 90% of the human body's total serotonin is located in the enterochromaffin cells in the GI tract, where it is used to regulate intestinal movements. The serotonin is secreted luminally and basolaterally which leads to increased serotonin uptake by circulating platelets and activation after stimulation, which gives increased stimulation of myenteric neurons and gut mobility. The remainder is synthesized in serotonergic neurons of the CNS, where it has various functions. These include the regulation of mood, appetite, and sleep. Serotonin also has some cognitive functions, including memory and learning. Modulation of serotonin at synapses is thought to be a major action of several classes of pharmacological antidepressants.Serotonin secreted from the enterochromaffin cells eventually finds its way out of tissues into the blood. There, it is actively taken up by blood platelets, which store it. When the platelets bind to a clot, they release serotonin, where it serves as a vasoconstrictor and helps to regulate hemostasis and blood clotting. Serotonin also is a growth factor for some types of cells, which may give it a role in wound healing. There are various serotonin receptors.Serotonin is metabolized mainly to 5-HIAA, chiefly by the liver. Metabolism involves first oxidation by monoamine oxidase to the corresponding aldehyde. This is followed by oxidation by aldehyde dehydrogenase to 5-HIAA, the indole acetic acid derivative. The latter is then excreted by the kidneys. One type of tumor, called carcinoid, sometimes secretes large amounts of serotonin into the blood, which causes various forms of the carcinoid syndrome of flushing (serotonin itself does not cause flushing. Potential causes of flushing in carcinoid syndrome include bradykinins, prostaglandins, tachykinins, substance P, and/or histamine), diarrhea, and heart problems. Because of serotonin's growth-promoting effect on cardiac myocytes, a serotonin-secreting carcinoid tumour may cause a tricuspid valve disease syndrome, due to the proliferation of myocytes onto the valve.In addition to animals, serotonin is found in fungi and plants. Serotonin's presence in insect venoms and plant spines serves to cause pain, which is a side-effect of serotonin injection. Serotonin is produced by pathogenic amoebae, and its effect on the gut causes diarrhea. Its widespread presence in many seeds and fruits may serve to stimulate the digestive tract into expelling the seeds.
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