The Search for the Magic Bullet: Can the Use of …...* Gaoni Y, Mehoulam R. Isolation, structure...

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The Search for the Magic Bullet: Can the Use of Medical Cannabis Decrease Opioid Use or Mortality? Ernest J. Dole, PharmD, PhC, FASHP, BCPS Clinical Pharmacist Pain Consultation & Treatment Center University of New Mexico Hospitals & Clinical Associate Professor University of New Mexico College of Pharmacy

Transcript of The Search for the Magic Bullet: Can the Use of …...* Gaoni Y, Mehoulam R. Isolation, structure...

Page 1: The Search for the Magic Bullet: Can the Use of …...* Gaoni Y, Mehoulam R. Isolation, structure and partial synthesis of an active constituent of hashish. J Am Chem Soc 1964;86:1646-7.

TheSearchfortheMagicBullet:

CantheUseofMedicalCannabisDecreaseOpioidUse

orMortality?ErnestJ.Dole,PharmD,PhC,FASHP,BCPSClinicalPharmacist

PainConsultation&TreatmentCenterUniversityofNewMexicoHospitals

&ClinicalAssociateProfessorUniversityofNewMexico

CollegeofPharmacy

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TheDepartmentofHealth–MedicalCannabisProgram(DOH-MCP)cer>fiesthatalloftheinforma>oncontainedintheseslidesistrueandcorrect.Theslidedeckisavailableforusebyen>>esoutsideofDOH-MCPwithpermission.PLEASEBEAWAREthatifthismaterialispresentedbyanagencyotherthanDOH-MCP,DOH-MCPcannotaNesttothevalidityoftheinforma>onpresentedinconjunc>onwiththeseslides.

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�  Cannabisplantanditsusesdatetoasearlyas4000BC

q NamedforGreekwordforhemp,kannabis

�  Longrecordedhistoryinmedicalwriting;documenteduseforpain,dysentery,nausea/vomiting,spasms,andconvulsions

�  Renderedillegalin1937

�  DroppedfromtheUSPharmacopeiain1941

*  BoothM.Cannabis:Ahistory.NewYork:Picador(St.Martin’sPress),2003.*  GaoniY,MehoulamR.Isolation,structureandpartialsynthesisofanactive

constituentofhashish.JAmChemSoc1964;86:1646-7.*  MatsudaLA,LolaitSJ,etal.Structureofacannabinoidreceptorandfunction

expressionoftheclonedcDNA.Nature1990;346:561-4.*  GuindonJ,BeaulieuP,HohmannAG.Pharmacologyofthecannabinoid

system.In:BeaulieuP,LussierD,PorrecaF,DickensonAH,eds.PharmacologyofPain.Seattle,WA:IASPPress;2010.

BriefHistoryofCannabis

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*  Attheendofthispresentationtheparticipantwill:*  BeabletodiscussthepharmacologyofTHC&CBD*  Demonstrateanunderstandingofthe“entourage

effect”ofcannabis*  Appreciatehowtheuseofcannabiscandecrease

painforpatientwithchronicnoncancerpain(CNCP)*  Appreciatehowtheuseofcannabiscandecrease

theamountofopioidmedicationutilizedinpatientswithCNCP

Objectives

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n  1970-ControlledSubstancesActclassifiedmarijuanaasadrugwith“noacceptedmedicaluse”;ie:ScheduleI

n  1976-FederalCourtrulesRobertRandall’suseofmarijuanaa“medicalnecessity”

n  2018-29statesandtheDistrictofColumbiahaveapprovedmedicalcannabisprogramsand9statesandWashington,DChavelegalizedforcannabisadultforrecrea>onaluse.

BriefHistoryofCannabisintheUS

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Endocannabinoid System

https://www.youtube.com/watch?v=Vtc11kRinf4

Brain (CB1) GI Tract (CB2

and CB1)

Liver (CB1 and CB2)

Skeletal Muscle

Adipocyctes (CB1)

Peripheral Nerves (CB1)

Immune System (CB2)

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n  Theendocannabinoidsystemn  Innatebiologicsystemn  Responsibleforregula>onofmul>plebodysystemsn  CB1andCB2receptorsthroughoutthebodyn  Noreceptorsinbrainstem

n  Clinicaldataavailableontheuseofcannabistotreatsymptomsrelatedtoseriousmedicalcondi>ons

n  Cannabismayprovidereliefforpa>entswhosesymptomsareunrelievedbyothermeans

TheMedicalCannabisSystem

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n  Composed of up to 400 components, including non-intoxicating components n  120 terpenoids: aromatic compounds n  21 flavonoids: antioxidants n  11 plant sterols (seed) n  22 fatty acids

n  THC and CBD are the two main studied components of cannabis out of 60-100 active cannabinoids

n  CBD can mitigate adverse effects of THC*  CasciniF,AielloC,DiTannaG.Increasingdelta-9-tetrahydrocannabinol(Δ-9-THC)contentinherbalcannabisovertime:systematicreviewandmeta-analysis.CurrDrugAbuseRev.2012Mar;5(1):32-40.*  GuindonJ,BeaulieuP,HohmannAG.Pharmacologyofthecannabinoidsystem.In:BeaulieuP,LussierD,PorrecaF,DickensonAH,eds.PharmacologyofPain.Seattle,WA:IASPPress;2010.

CannabinoidComponents

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Endocannabinoids

v Naturalsubstancesproducedbythebody

v Bindtoreceptorsthroughoutthebody

v Noreceptorsinbrainstem

v Exogenouscannabisplanthas>60cannabinoids

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v euphoricv stimulant

v muscle-relaxingv analgesicv anti-emetic

v appetitestimulatingv lowersintra-ocularpressure

v AHighTHCis15-25%

THC(delta-9-tetrahydrocannabinol)

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ResearchedAttributesAnxiolyticAnti-psychoticAnticonvulsantAnti-oxidantAnti-inflammatory

Anti-ischemicAnti-emeticAnti-tumorNeuroprotection

CBD(Cannabidiol)

*CBDmitigatesthepsychoactivesideeffectofTHC-AhighCBDis5-15%

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EndocannabinoidSystem&Pain

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v NandP/QVSCCblockadev K-irpotentiationv VSSCblockadev mapKinaseactivationv mastcellinhibitionv modulationofGABAergic,glycinergic,andglutamatergicneurotransmission

EndocannabinoidSystem&Pain

ManzanaresJ,etal.Roleofthecannabinoidsysteminpaincontrolandtherapeuticimplicationsforthemanagementofacuteandchronicpainepisodes.CurrNeuropharmacol2006;4(3):239-257.GuindonJ,BeaulieuP,HohmannAG.Pharmacologyofthecannabinoidsystem.In:BeaulieuP,LussierD,PorrecaF,DickensonAH,eds.PharmacologyofPain.Seattle,WA:IASPPress;2010.WhitingPF,WolffRF,DeshpandeS,etal.CannabinoidsforMedicalUse:ASystematicReviewandMeta-analysis.JAMA.2015;313(24):2456-2473.doi:10.1001/jama.2015.6358

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Poten>alTherapeu>cEffects/BenefitsTHC(delta-9-tetrahydrocannabinol)*  Intoxica>ngeffects* Appe>tes>mulant* Decreasedintraocularpressure

* Analgesic/neuropathicpain

* An>spasmodic* An>eme>c

CBD(cannabidiol)*  Notintoxica>ng*  Analgesic/neuropathicpain

*  An>psycho>ceffects*  An>convulsant*  Neuro-protec>veeffects*  An>spasmodic*  An>eme>c

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v Preventionofpaclitaxel-inducedpainfulneuropathyv Medicationoveruseheadache,migraine,andclusterv Cancerpainv Neuropathicpainv Osteoarthritisv Centralsensitizationv Brachialplexusavulsionv Fibromyalgia*  BestardJA,etal.Anopen-labelcomparisonofnabiloneandgabapentinasadjuvanttherapyormonotherapyinthemanagement

ofneuropathicpaininpatientswithperipheralneuropathy.PainPractice2011;11(4):353-368.*  AkermanS,etal.EndocannabinoidsinthebrainstemmodulateduraltrigeminovascularnociceptivetrafficviaCB1andtriptan

receptors.JNeurosci2013;33(37):14869-14877.*  PortenoyRK,etal.Nabiximolsforopioid-treatedcancerpatientswithpoorly-controlledchronicpain.JPain2012;13(5):438-449.*  PiniLA,etal.Nabiloneforthetreatmentofmedicationoveruseheadache.JHeadachePain2012;13:677-684.*  GuindonJ,BeaulieuP,HohmannAG.Pharmacologyofthecannabinoidsystem.In:BeaulieuP,LussierD,PorrecaF,DickensonAH,

eds.PharmacologyofPain.Seattle,WA:IASPPress;2010.*  BurstonJJ,etal.CannabinoidCB2receptorsregulatecentralsensitizationandpainresponseassociatedwithosteoarthritisofthe

knee.PLOSOne2013;8(11):1-9.*  WhitingPF,WolffRF,DeshpandeS,etal.CannabinoidsforMedicalUse:ASystematicReviewandMeta-analysis.JAMA.

2015;313(24):2456-2473.doi:10.1001/jama.2015.6358

UtilityinPain

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v Low(6-20%)andvariablebioavailability v Peakplasmawithin1-6andmayremainelevatedforseveralhours

v Initiallyoxidizedinliverto11-OH-THC,apotentpsychoactivemetabolite

v Furtheroxidationof11-OH-THCleadstoeliminationproducts(urineandfeces)

v Terminalhalflife20-30hrs

OralTHCPharmacology

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v Rapidlyabsorbedintobloodstreamandredistributed

v Considerableamountofdoselostinsmoking

v Peakbloodlevelsachievedatendofsmoking,declinerapidlyover30minutes

v Smokingachieveshigherpeakconcentrationbutshorterdurationofeffect

v Smalleramountsof11OH-THCformed

SmokedTHCPharmacology

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n  Toxicityn  Nolethaloverdosesreportedfromcannabisalonen  Lesstoxicity/lethalityra>othanalcohol,opiates,

barbiturates,andsomecommonmedica>onsn  DependenceandWithdrawal

n  Es>matesofdependencearehighlycontroversialn  Mild,short-livedfeelingsofwithdrawaloccurforsome

n  OtherDrugUsen  Noconclusiveevidencecannabisleadstoothersubstances

ofabuseorthatmedicalprogramsincreaseuseamonggeneralpopula>on

n  Typical“gateways”aretobaccoandalcohol

CommonQues>ons

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n  CentralNervousSystemn  Canbetreatmentlimi>ng–generallyseeanxiety/

paranoian  StrainswithlowerTHCandhigherCBDcontentless

psychoac>ven  Neuropsychiatric

n  Teensandyoungerpopula>ons–ques>onsregardingcogni>vedevelopment,memory,andpsychiatricillness

n  Other–Generaln  Cardiovascular,appe>te,nausea,hyperemesis

syndrome,headache,decreasedcoordina>on/musclestrength,thirst/drymouth,red/dryeyes

Poten>alAdverseEffects

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Pharmaceu>calPrepara>onsn  Dronabinol(Marinol),issynthe>cΔ9-tetrahydrocannabinol

(THC),usedasanappe>tes>mulant,an>eme>c,andanalgesic.Approvedin1986forN&VfromChemotherapy;AIDSanorexiain1992

n  Nabilone(Cesamet),asynthe>ccannabinoidandananalogofMarinol.ItisScheduleIIunlikeMarinol,whichisScheduleIII

n  Nabiximols(Sa>vex),acannabinoidextractoralspraycontainingTHC,CBD,andothercannabinoidsusedforneuropathicpainandspas>cityin22countriesincludingEngland,CanadaandSpain(notavailableintheUS).Sa>vexisawhole-plantcannabinoidmedicine.

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n  Marinolissynthe>cTHCn  Onlyoneofmanycannabinoidsinthecannabisplant

(“EntourageEffect”)

n  Thepsychoac>vecomponentmaypresentadura>onofac>onthatisnotacceptabletothepa>ent

n  Manyothercannabinoidsintheplanthaveimportanteffectsn  An>-inflammatory,an>-nausea,neuroprotec>on

n  DifferentstrainsofcannabishavevaryingTHCcontentandvariouseffectsonsymptoms

n  Ifusedfornauseaandvomi>ng,pa>entmayhavedifficultytolera>ngoralmedica>ons

WhyIsn’tMarinolEnough?

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SafetyofPharmaceu>calCannabinoids

n  Lowabusepoten>alofprescrip>oncannabinoidsn  Dronabinol(Calhoun1998)n  Nabilone(Ware2010)n  Nabiximols(Robson2011)

n  Noevidenceoftolerance(Rog2007,Serpell,2013)

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v CNSsideeffectsprimarilyanxietyandparanoia

*  StrainswithlowerTHCcontentlesspsychoactive

v Generalphysicaleffects*  changesinappetite,thirst,nausea,headache,decreasedcoordination,reducedmusclestrength,drymouth,andsensitivitiesincludingrednessanddrynessoftheeyes.

v Toxicity*  Nolethaloverdosesreportedwithnonderivativeproducts

*  Lesstoxicity/lethalityratiothanalcohol,opiates,barbiturates,andsomecommonmeds

AdverseEffects

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v AcutemedicalriskofTHCareratherlowv Fataloverdosewithcannabisalonehasnotbeenreported

v Additiveeffectsofcannabis,anticholinergicsandCNSdepressants*  (e.g.,sedation,drymouth,dizziness,andconfusion)*  Smokingitself(cannabisortobacco)inducesCYP1A2v Mayincreaseclearanceofanti-psychoticsandanti-

depressantsv MetabolizedbyP450,littleevidencesupportingdrug-drug

interaction*  Chronicopiateusershaveseenapotentialreductionofdoseswheninconjunctionwithmedicalcannabis

AcuteDrugInteractions

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Cannabinoid-OpioidInteractioninChronicPain

v Objectivesv EvaluateeffectofvaporizedcannabisonBloodlevelsofprescribedopiates(SRmorphineandSROxycodone)

v Determinetheshort-termsideeffectsofco-administrationofcannabisandopioids

v AssesseffectofvaporizedcannabisonlevelofChronicpain

v N=21v FundedinpartbyNIDAandNIHCRCgrants

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*  Study*  21ptswithchronicpain,ontwice-dailydosesofsustainedreleasemorphineoroxycodonewereadmittedfora5-dayinpatientstay*  Askedtoinhalevaporizedcannabisintheeveningofday1,threetimesadayondays2–4,andinthemorningofday5*  Theextentofchronicpainwasassesseddaily*  Results*  NosignificantchangeintheAUCforeithermorphineoroxycodoneafterexposuretocannabis*  Painwassignificantlydecreased(average27%)aftertheadditionofvaporizedcannabis* AbramsDI,CoueyP,ShadeSB,KellyME,BenowitzNL.ClinPharmacolTher.2011Nov2.90(6):844-51.

Cannabinoid-OpioidInteractioninChronicPain

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v Co-administrationofvaporizedcannabiswithoralsustainedreleaseopiatesissafe

v Co-administrationofvaporizedcannabisinsubjectsonstabledosesofmorphineoroxycodoneappearstoenhanceanalgesia

v Co-administrationofvaporizedcannabistrendstowardsloweringconcentrationoftheopioidsoftheopioids*  ThePKeffectswouldbeexpectedtoreducetheanalgesiceffects

ofopioids.*  Theeffectsofvaporizedcannabistoenhanceopioidanalgesia

occursbyapharmacodynamic,notapharmacokineticeffectv AbramsDI,CoueyP,ShadeSB,KellyME,BenowitzNL.ClinPharmacolTher.2011Nov2.90(6):844-51.

Cannabinoid-OpioidInteractioninChronicPain

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v Cannabisusecommonamongopioid-dependentindividuals*  Rangefrom20%to95%*  Cannabisuseassociatedwithdrugdealingandneedlesharing

v Cannabiseffectsontreatmentforopioid-dependence*  Cannabisuseassociatedwithfasterrelapsetoalcohol,cocaine

andheroinuse*  Inchronicopioidtherapyforpain,cannabisusewasapositive

predictoroffutureopioidmisuse*  Cannabisusestronglyassociatedwithincreasedriskforother

substanceuseanddependence*  Thesewereself-selectedcannabisusers

v ScavoneJL,SterlingRC,VanBockstaeleEJ.Neuroscience.2013Sep17;248:637-54

Cannabis&OpioidUse/Abuse

.

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v Manystudieshavedemonstratedcannabisuseassociatedwithpositivetreatmentprognosisamongopioid-dependentcohorts*  Cannabisabuse&dependencewerepredictiveofdecreasedheroin&cocaineuseduringtreatment*  IntermittentuseofcannabiswasassociatedwithalowerpercentageofpositiveopioidUDSandimprovedmedicationcomplianceonnaltrexone*  Cannabisimprovedopioid-dependencetreatmentretention*  Cannabisusemaybenefitopioidusersinwithdrawal*  Thesewereself-selectedcannabisusers* ScavoneJL,SterlingRC,VanBockstaeleEJ.Neuroscience.2013Sep17;248:637-54

Cannabis&OpioidUse/Abuse

.

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*  Thesubstance-dependentpopulationmaydiffersignificantlyfromdrugnaïveorrecreationalsubstanceusers

*  Correlationwithmedicalcannabisusersisdifficultbutsuggeststhatasidefromdirect,pain-relatedbenefitsofcannabisindelayinginitiationandadjunctivepain-relief,cannabismayprovidepositiveeffectsinopioidabusersv ScavoneJL,SterlingRC,VanBockstaeleEJ.Neuroscience.2013Sep17;248:637-54

Cannabis&OpioidUse/Abuse

.

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v Receptorsystemsofbothcannabinoidsandopioidsareknowntomediatecommonsignalingpathways

v Drugsthattargetboththecannabinoidandmorphinereceptorsystemspossesssharedpharmacologicalprofiles* Agonistsofbothreceptortypeshavebeenshowntocausepainrelief,sedation,hypotension,motordepression,anddrugreward/reinforcementv ScavoneJL,SterlingRC,VanBockstaeleEJ.Neuroscience.2013Sep17;248:637-54

Cannabinoid-OpioidInteraction

.

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v Studiesdemonstratecross-tolerance,mutualpotentiation,andreceptorcross-talk* Impliesthatpainrelieffromcannabinoidsaremorethanjustpsychotropic-based

v Cannabinoidsmaymodulateopioidfunctionatanumberofdifferentlevelswithinthecell* Potentialforadditivepainreliefwithcombinationofopioids&cannabinoidsv ScavoneJL,SterlingRC,VanBockstaeleEJ.Neuroscience.2013Sep17;248:637-54

Cannabinoid-OpioidInteraction

.

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v Timeseriesanalysisofmedicalcannabislawsandstate-leveldeathcertificatedataintheUSfrom1999to2010;all50statesincluded

v Stateswithmedicalcannabislawshada24.8%lowermeanannualopioidoverdosemortalityrate(95%CI,-37%to-9%,P=0.003)

v ExaminationoftheassociationbetweenmedicalcannabislawsandopioidanalgesicoverdosemortalityineachyearofimplementationofthelawshowedalowerrateofODmortalityovertimethatgenerallystrengthenedovertime*  BachhuberMA,SalonerB,CunninghamCO,BarryCL.Medical

CannabisLawsandOpioidAnalgesicOverdoseMortalityintheUnitedStates,1999-2010.JAMAInternMed.2014;174(10):1668-1673.doi:10.1001/jamainternmed.2014.4005

MedicalCannabisLawsandOpioidAnalgesicOverdoseMortalityinTheUnitedStates1999-2010

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n  Theendocannabinoidsystemisaninnatebiologicsystemresponsibleforregula>onofbodymul>plesystems

n  Thereisclinicaldataontheuseofcannabistotreatsymptomsrelatedtoseriousmedicalcondi>ons

n  Cannabismayprovidereliefforpa>entssufferingfromillnessordiseaseunrelievedbyothermodali>es

n  Recommendingapa>entfortheprogramisprotectedunderstatelaw

Summary

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v TheuseofcannabishasaplaceinthetreatmentofCNCP

v TheuseofcannabismaydecreasetheuseofopioidmedicationinpatientswithCNCP

v Cannabishasafavorablesafetyprofile

Summary