2017 HMPT Mod7 Less3 - s3-eu-west-1.amazonaws.com€¦ · Praconer Training Level II ... Back to...
Transcript of 2017 HMPT Mod7 Less3 - s3-eu-west-1.amazonaws.com€¦ · Praconer Training Level II ... Back to...
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HompesMethodPrac00onerTrainingLevelII
©HealthforthePeopleLtd–notforreusewithoutexpressedpermissionHompesMethodisatradingnameofHealthForThePeopleL<|RegisteredinEngland&Wales|Company#6955670|VAT#997294742
Lesson Fifty Nine – Synapses and neurotransmitters
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Let’slookatneurotransmi0ers
• Sowehaveabasicunderstandingofhowthenervoussystemisstructured,andhownervesconductimpulses.
• There’sanelectricalimpulse,butitcan’thopacrosssynapses–there’salwaysagap
• Instead,theimpulsesignalchangesfromelectricaltochemicalforasplitsecond
• Thechemicalsareneurotransmi0ers
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ThesynapseandhowNTswork
h0p://www.humanillnesses.com/Behavioral-Health-Fe-Mu/MedicaIons.html
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ThesynapseandhowNTswork
h0p://ib-psych.blogspot.co.uk/2013/05/bla-all-about-neurotransmi0ers.html
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ThesynapseandhowNTswork
h0ps://www.youtube.com/watch?v=M_QQD9NdJcU
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YouTubevideos
• h0ps://www.youtube.com/watch?v=WhowH0kb7n0&t=4s
• h0ps://www.youtube.com/watch?v=p5zFgT4aofA• h0ps://www.youtube.com/watch?v=Ibzfwtdtong• h0ps://www.youtube.com/watch?v=mItV4rC57kM
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“CommunicaIonPearl”
• Thenervoussystemislikeamotorwayand“A-road”network–fastmovingtraffic.
• Thehormonesystemislikeanetworkofbackstreetsandcountrylanes–slowmovingtraffic.
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Backtotheaimsofthismodule
• Tounderstandandworkwithneurotransmi0ers,weneedtoknow:
– Howtheyworkingeneral– Howthey’remade(andwhy)– Whattheirprimaryrolesare– Howtheyarebrokendownandexcreted– Whatcausesthemtofalloutofbalance– SymptomsandlabmarkersthatsuggestNTimbalances– Howtobeingthembackintobalance– Casestudies
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HowNTsworkingeneral
• NTsareheldinsynapIcvesiclesintheaxonterminal• VesiclesaretetheredtothesynapIcmembrane• NerveimpulsestriggertheirreleaseintothesynapIccleg(gap)
• NTsbindwithreceptorsonthenextnerve’sdendrite– It’salockandkeysystem– TranssynapIccommunicaIon
• TheNTexcitesthedendriIcspineofthenextnerve(manynerves,usually),andoffwego…
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HowNTsworkingeneral
h0ps://en.wikipedia.org/wiki/Neurotransmi0er
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HowNTsworkingeneral
• NTsdon’tbindforever(we’retalkingmilliseconds)• Theyhavetobeclearedup• Thishousekeepingisdoneintwoways…– Reuptakepumpsandrecycling– DegradaIonbyanenzyme
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HowNTsworkingeneral
• Howcanyoumodulateneurotransmi0erlevelsand,thus,funcIon?– ManipulatetheamountofNT(adjustthesignalvolume)– Manipulatethereceptordensity(adjustthehearingaid)– ManipulateNTreuptake– ManipulateNTdegradaIon
• Genepolymorphisms,pharmaceuIcals,toxins,etc.canallaffectthesemechanisms
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NowNTswork–holdon!
• SomeNTsactuallydumbdownthesignal• Theydon’tincreasethelikelihoodofthenextneuronhavinganacIonpotenIal
• ThesearecalledinhibitoryNTsasopposedtoexcitatoryNTs
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Typesofneurotransmi0er
• Excitatory…– Glutamate(highest)– Dopamine(canbeboth)– Noradrenaline(norepi)– Adrenaline(epi)– Serotonin– Acetylcholine– Histamine
• Inhibitory…– GABA(highest)– Glycine– Dopamine(canbebothaccordingtosomeauthoriIes)
• h0ps://en.wikipedia.org/wiki/Excitatory_synapse
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Balanceisthekey
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WhatareNTsmadefrom?• IntermsofchemicalclassificaIon,NTscanbe:
– Aminoacids– Monoamines– Traceamines– Lipids– Purines– Gastrins– NeuropepIdes– Opioids– Orexins– SecreIns– Tachykinins– Gasotransmi0ers
TheseareallsimplemoleculestoallowNTstobebuiltquicklyandatalowmetaboliccost(similartosteroids,whichare
alsosimplemolecules).
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WhatareNTsmadefrom?• Examples:
– Glutamate–aminoacid– GABA–aminoacid– Glycine–aminoacid– Acetylcholine–acetylcholine(hasitsowncategory)– Dopamine-monoamine– Noradrenaline-monoamine– Adrenaline-monoamine– Serotonin-monoamine– Histamine–monoamine– Nitricoxideandhydrogensulfide–gasotransmi0er– Endorphin–opioid– SubstanceP-tachykinin
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Glutamate/glutamicacid
• Themostabundantexcitatoryneurotransmi0er:– HighestconcentraIonsinbrain&muscles– Receptors:
• NMDAandAMPA– FuncIons:
• CogniIon,learningandmemory• PrecursortoGABA• AssistsdigesIon,saIety,musclefuncIon,bonefuncIonandmore
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GABA
• Gamma-aminobutyricacid• Themostabundantinhibitoryneurotransmi0er:– Receptors:
• GABAA
• GABAB– FuncIons:
• Restorescalm• Balancesglutamate• AssistssleepviaVLPO(ventrolateralpreopIcnucleus)
– Helpsfacilitateeverythingthatgoesalongwithsleep!
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Dopamine
• Excitatory(possiblyinhibitory?)– Receptors:
• D1,D2,D3,D4,D5• Typediffersdependingonbrainregion
– FuncIons:• Reward-mediatedbehaviour–feelinggoodaboutyourself• Pleasurecenters–reward–addicIon
– ItistheANTICIPATIONofreward(thisisSOIMPORTANT)
• ExecuIvefuncIons,motorcontrol,arousal• LactaIon,sexualgraIficaIon,nausea
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Serotonin
• Excitatoryneurotransmi0er– Receptors:
• 5-HT1a-1f(noc);5-HT2a-c;5-HT3-7– FuncIons:
• Mood–“feelgood”chemical• Memoryprocessing,cogniIon• Convertsintomelatoninforsleep
– MelatoninisalsoamajoranIoxidant
• Growthfactor(e.g.helpsrepairdamagedliver• GIfuncIon–moIlity,forexample
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h0ps://en.wikipedia.org/wiki/Serotonin
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Acetylcholine
• Mostabundantneurotransmi0er– Receptors:
• Cholinergic– NicoInic(sympatheIc)– Muscarinic(parasympatheIc)
– FuncIons:• MotorfuncIons(muscles)• Alertnessonwaking• ConcentraIon• CogniIon• Memory• Vasculartone
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Noradrenaline
• Alsoknownasnorepinephrine– Receptors(adrenergic):
• Alpha1,alpha2,beta1– FuncIons:
• Stressresponse–releaseofnoradrenalinefromSNS• It’scomplex–dependsonareaofbody
– E.g.vasoconstricIonofskin,vasodilaIoninlungs– h0ps://en.wikipedia.org/wiki/Adrenergic_receptor– Seethelinktounderstandthecomplexity
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Adrenaline
• Alsoknownasepinephrine– Receptors(adrenergic):
• Alpha1,alpha2,beta1– FuncIons:
• Stressresponse-respondtothreatsignalsadrenalmedulla• It’scomplex–dependsonareaofbody
– E.g.vasoconstricIonofskin,vasodilaIoninlungs– h0ps://en.wikipedia.org/wiki/Adrenergic_receptor– Seethelinktounderstandthecomplexity
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Glycine
• Inhibitoryneurotransmi0er– WidedistribuIon-abundant
• Excitatoryinembryologicaldevelopment(notcomplex,then!)– Receptors:
• GlyR– Caffeineantagonizesthereceptor
– FuncIons:• Spinalcord,brainstem,reIna• CanhavearelaxaIoneffect• Canenhancesleep(RayPeatdiscussesthis)• Manynon-neurotransmi0erfuncIons
– E.g.detoxificaIon(glycinaIon)
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Histamine
• Excitatoryneurotransmi0er– Receptors:
• H1,H2,H3,H4,histaminegated– FuncIons:
• ManyfuncIons• Immunesystem(e.g.allergy)
– Bronchialsmoothmuscles–think‘anaphylaxis’• AppeIteandstomachacidsecreIon• VisceralhypersensiIvity• Wakefulness• ErecIons!
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SubstanceP
• Excitatoryneurotransmi0er– Receptor
• NK1R– FuncIons
• Stressresponse-afirstrespondertostress• FoundinareasofbrainrelatedtoemoIon• PainpercepIon• InflammaIon–promotescytokineexpression• VomiIng• Mood,respiraIon,neurotoxicity
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Considerthis…
• Neurotransmi0ersareregulatedbypercepIon• LookatthenumberofphysiologicalfuncIons• Thisisyourmind-bodyconnecIon• It’swhyworkingonthemindcanhavesuchprofoundhealthbenefits
• It’salsowhysomepeoplewillneverrespondtonutriIon/funcIonalmedicine
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Thanks!
• Sonowwehaveanoverviewofthemainneurotransmi0ersandwhattheydointhebody.
• Itoldyouitwascomplex…• Next,let’slookathowtheseNTsaresynthesised
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h0p://www.wormbook.org/chapters/www_neuronalgenome/neuronalgenome.html