Adrenaline: Difference between revisions

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[[File:Epinephrine.png|277px|thumb|right|Skeletal formula of adrenaline molecule.]]
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'''Adrenaline''', also known as '''epinephrine''', is a [[hormone]] and monoamine [[neurotransmitter]]. Adrenaline is primarily produced in the neurones of the central nervous system of animals including humans.  
[[File:Epinephrine.svg|270px|thumb|right|Skeletal formula of an adrenaline molecule.]]
'''Adrenaline''' (also known as '''epinephrine''') is a [[hormone]] and [[neurotransmitter]]. It is primarily produced in the adrenal glands and certain neurons in humans and animals.{{clarify}}{{citation needed}}


It is used to regulate heartrate, blood vessel and air passage diameters, and metabolic shifts. Adrenaline release is a crucial component of the fight-or-flight response of the sympathetic nervous system.  
Adrenaline is used to regulate heart rate, blood vessel and air passage diameters, and metabolic shifts. Adrenaline release is a crucial component of the fight-or-flight response of the sympathetic nervous system.{{citation needed}}  Adrenaline release during fight-or-flight can increase the rate of processing of information in the brain which leads to a slow motion perception due to the relativity of intertwined space and time as [https://en.wikipedia.org/wiki/Spacetime spacetime].


==Chemistry==
==Chemistry==
[[File:Monoamine_chain.png|210px|thumb|right|Skeletal formula of monoamine chain molecule.]]
[[File:Catechol.svg|210px|thumb|right|Skeletal formula of catechol molecule.]]
Adrenaline is a [[phenethylamines|phenethylamine]] and [[catecholamine]], which is a monoamine chain attached to a benzene ring. The catechol ring is a benzene ring with two hydroxyl groups attached to it, where both are ortho-oriented relative to each other. A monoamine chain is made up of an amine group attached to an ethane chain. This monoamine chain can be found in many neurotransmitters, including [[histamine]], [[dopamine]], [[serotonin]] and [[noradrenaline]]. It is also found in many psychoactive substances, examples being [[tryptamines]] and [[phenethylamines]].


[[File:Monoamine_chain.png|300px|thumb|right|Skeletal formula of monoamine chain molecule.]]
==Adrenergic system==
[[File:Pyrocatechol1.png|300px|thumb|right|Skeletal formula of catechol molecule.]]
The adrenergic receptors exhibit both excitatory and inhibitory [[neuron#neurotransmission|neurotransmission]] and are located throughout the human body. There are two types of adrenaline receptors; α<sub>(1 or 2)</sub> and β<sub>(1-3)</sub>.{{citation needed}}
Adrenaline is a [[phenethylamine]] and catecholamine monoamine, which is a monoamine chain attached to a benzene ring. The catechol ring is a benzene ring with two hydroxyl groups attached to it, where both are ortho-oriented relative to each other. A monoamine chain is made up of an amine group attached to an ethane chain. This monoamine chain can be found in many neurotransmitters, including [[histamine]], [[dopamine]], [[serotonin]] and [[noradrenaline]]. It's also found in many drugs, examples being [[tryptamines]] and [[phenethylamines]].


==The adrenergic system==
===Drugs targeting the adrenergic system===
The adrenergic receptors exhibit both excitatory and inhibitory [[neurone#neurotransmission|neurotransmission]] and are located throughout the human body. There are two types of adrenaline receptors; α<sub>(1 or 2)</sub> and β<sub>(1-3)</sub>.


===Drugs targeting the adrenergic system===
*'''Direct-acting agonists'''
*'''Direct-acting agonists'''
Direct-acting [[agonists]] have direct action upon the adrenergic system where they have action upon the adrenergic receptors themselves. These include antihypertensives (to reduce blood pressure), [[sedatives]] and [[muscle relaxants]].
Direct-acting [[agonists]] have direct action upon the adrenergic system where they have action upon the adrenergic receptors themselves. These include antihypertensives (to reduce blood pressure), [[sedatives]] and [[muscle relaxants]].


*'''Indirect-acting agonists'''
*'''Indirect-acting agonists'''
Indirect [[agonists]] work by increasing the [[neurotransmission]] of endogenous chemicals such as adrenaline or [[noradrenaline]]. These include many [[stimulant]] drugs, such as [[amphetamine]], [[cocaine]], [[MDMA]] and [[methylphenidate]].
Indirect [[agonists]] work by increasing the [[neurotransmission]] of endogenous chemicals such as adrenaline or [[noradrenaline]]. These include many [[stimulant]] drugs, such as [[amphetamine]], [[cocaine]], [[MDMA]] and [[methylphenidate]].


*'''Antagonists'''
*'''Antagonists'''
[[Antagonists]] of the adrenergic system can be split into α-blockers and β-blockers. These include [[anti-psychotics]], [[anti-depressants]] and in medication preventing heart attacks.
 
[[Antagonists]] of the adrenergic system can be split into α-blockers and β-blockers. These include [[antipsychotics]], [[antidepressants]] and in medication preventing heart attacks.
 
==Subjective Effects==
{{Preamble/SubjectiveEffects}}
{{effects/base
{{effects/physical|
*'''[[Stimulation]]'''
*'''[[Bronchodilation]]'''
*'''[[Increased perspiration]]'''
*'''[[Increased heart rate]]'''
*'''[[Increased blood pressure]]'''
*'''[[Pupil dilation]]'''
*'''[[Pain relief]]'''
 
}}
{{effects/cognitive|
*'''[[Impulsivity]]'''
*'''[[Memory enhancement]]'''
*'''[[Anxiety]]'''
*'''[[Time distortion]]'''
 
}}
{{effects/visual|
 
====Enhancements====
*'''[[Colour enhancement]]''' - This is due to the aforementioned Pupil Dilation
*'''[[Visual acuity enhancement]]'''
 
}}
{{effects/auditory|
 
*'''[[Auditory enhancement]]'''
 
}}<br />
 
==Toxicity and harm potential==
{{toxicity}}It is strongly recommended that one use [[responsible use|harm reduction practices]] when using this substance.
===Lethal dosage===
The range of possible lethal dosage ranges from 4-8 milligrams. This varies on weight and sex.
==Dangerous interactions==
{{DangerousInteractions}}{{DangerousInteractions/Intro}}
 
*A - Blockers
*Vasodilators
*Diuretics
*Antihypertensives
*Ergot Alkaloids
*Phenothiazine Antipsychotics
*Sympathomimetics
*B - Blockers
*Trycyclic Anti-depressants
*[[MAOI|MAO Inhibitors]]
*COMT Inhibitors
*[[Clonidine]]
*Doxapram
*Oxytocin
*Anaesthetics
*[[Antihistamine|Antihistamines]]
*Thyroid Hormones
*Cardiac Glycosides
*Quinidine
*Potassium Depleting Diuretics
*Corticosteroids
*Theophylline
 
==Legal Status==
'''Australia:''' You can buy adrenaline at a pharmacy without a prescription
 
'''United Kingdom:''' Adrenaline is available by prescription.
 
'''United States:''' Adrenaline is available by prescription, but can be found in settings such as a school for emergency usage or for first aid carry.


==See also==
==See also==
*[[Responsible use]]
*[[Responsible use]]
*[[Acetylcholine]]
*[[Acetylcholine]]
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*[[GABA]]
*[[GABA]]
*[[Neurotransmitter]]
*[[Neurotransmitter]]
==External links==
*[https://en.wikipedia.org/wiki/Adrenaline Adrenaline (Wikipedia)]
*[https://www.pfizermedicalinformation.com/en-us/epinephrine-0/drug-interactions Adrenaline Interactions (Pfizer)]


==References==
==References==
{{references}}
{{references}}


[[Category:Neurotransmitters]]
[[Category:Neurotransmitter]]
[[Category:Hormone]]
 
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