demystifying microbiome research: new opportunities for ... · the human microbiota the term...
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Demystifying Microbiome Research: New Opportunities for Health & Business
Antoine Bily Naturex
Matthew Roberts KGK Science
Francine Schoenwetter New Hope Network
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KGK Science Inc. www.kgkscience.com Confidential © Copyright. All rights reserved
Demystifying Microbiome Research: New Opportunities for
Health & Business
Matthew Roberts Ph.D. M.B.A Chief Scientific Officer
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Agenda• WhatistheMicrobiome?• AdvancesinMicrobiomeResearch• RelevantEndpointsforMicrobiomeStudies
• ClinicalSubstan=a=onofProbio=cs
• ConcludingRemarks
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Microbiome–Defini=on• WhatweknowasthemicrobiomewascoinedbyJoshuaLederbergasa
meansto“signifytheecologicalcommunityofcommensal,symbio3c,andpathogenicmicro-organismsthatliterallyshareourbodyspaceandhavebeenallbutignoredasdeterminantsofhealthanddisease”(1)
• Thetermmicrobiotaisthespecificmicrobialpopula=oninourbody
(bacteria,viruses,archea,protozoans,andfungi)
• Themicrobiomeisviewedasthecatalogofthesemicrobesgenome(i.e.genes)(2)
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Microbiome–History&Func=on• Inves=ga=onofthediversityofthemicrobiomebeganasearlyasthe1680’s
whenAntonievanLeewenhoekcomparedhisoralandfecalmicrobiota,no=ngthattherewerestrikingdifferencesbetweenthe2samples(3)
• Themutuallybeneficialrela=onshipbetweenvertebratesandmicrobeshas
evolvedovermillionsofyearsandthesemicro-organismshaveselectedforspecializedareasofourbodysuchasthegut,mouth,andskin
• Approximately90%ofthecellsinourbodyaremadeupofthemicrobesthatcolonizeourgut.
• Thegutmicrobiomecommunitycaninfluencemanyaspectsofourphysiologysuchasthemetabolism/absorp=onofnutrients,aswellasplayapreventa=veroleinthepathogenesisofvariousdiseases
Grenhametal.,2011
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AdvancesinMicrobiomeResearchNutri=onanddietarysupplementscanimpactthegutmicrobiome.Thusresearchintotherela=onshipbetweenourgutmicrobiota,ourphysiology,anddietarysupplementshasbecomemorewidespread.Notableadvancesinclude;• Hilderbrandtetal2009.,supplyingmicewithahigh-fatdietledtodecreased
BacteroidetesandincreasedFirmicutesandProteobacteriainthemurinegut,andthiswasindependentofweightgain
• Sela&Mills2010.,thebioac=vemoleculesdissolvedinbreast-milkinfluencesthe
developmentofaninfantsgutmicrobiota.• SmithMetal2013.,severelymalnourishedchildrenhavederegulatedgutmicrobiotathat
makeitdifficulttou=lizenutrientsfromfood.
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AdvancesinMicrobiomeResearchOurgutmicrobiomemayalsoplayaroleinmetabolismandapersonalizedapproachtomedicine;• TurnbaughPetal2009.,ourmetabolismhasbeenassociatedwithacoregut
microbiomeanddevia=onsfromthiscoreassemblyofmicrobiotaislinkedwithdifferentphysiologicalstates(i.e.obesevs.leanindividuals)
• Knightetal2015.,crowd-fundedprojects,suchastheAmericanGut(par=cipantshavetheirmicrobiomessequenced)mayhelpreplenishourancestralmicrobesand/ordiscovernewonesthatwillhelpmaintainwellness
• KnightRetal2016.,developmentofa“personalized”mousemodelsthatcan
harboranindividual’smicrobiomesotheeffectsofinterven=ons(nutrientsordrugs)canbetested
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Psychobio=cs:ThemicrobiomeandtheGut-BrainAxis• Messaoudietal2011.,L.helve=cusandB.longumreduced
psychologicaldistress
• Steenbergenetal2015.,mul=-speciesprobio=creducednega=vethoughtsassociatedwithsadmood
• Schmidtetal2015.,prebio=creducedstressresponseandincreasedprocessingofposi=vevs.nega=veajen=onalvigilance
• Allenetal2016.,B.longumreducedselfreportedstressandimprovedbrainac=vity
• Kato-Kataokaetal2017.,L.CaseistrainShirotareducedphysiologicalandphysicalsymptomsofstress
• SampsonTetal2016.,amousewiththemicrobiotafrompa=entssufferingfromParkinson’sdevelopedthesamediseaseprogression
El-Ansaryetal2013
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OralMicrobiomeResearch• Parahi3yawaNB,etal.2010.Over6billionbacteria
spanningover700speciesinhabitthemouth
• HealthCanada,2008.Oralhealthlinkedtooverallhealth(cardiovascular;diabetes;etc)
• JamesKM,etal.2016.Specificprobio=ccombina=onspreventC.albicansbiofilmforma=onbydownregula=nggenescri=caltopathogenesis
• KolipD,etal.2016.Dentaq®OralandENTHealthProbio=cComplexreducesgingivalinflamma=onandplaqueforma=oninadolescentorthodon=cpa=ents
Gingivi9s-P.gingivalis
GUMHEALTH
GENERALORALHEALTHOralCandidiasis-C.albicans
DentalCaries-S.mutans
TOOTHHEALTH
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RelevantEndpointsforMicrobiomeStudies• Collectmetagenomicdatafrommicrobiomescreening(QIIME,16SrRNA,
shotgungenomicanalysis).Thiscanbedoneinindividualsviafecalcollec=onandsubsequentextrac=onofRNA/DNAsequences(7)
• Employtheuseofnovelbioinforma=ctools(e.g.,InnateDBandNetWorkAnalyst)toevaluatetheinterac=onofgenes,proteins,andcytokinesthatmaybemodulatedbyaltera=onstothemicrobiome(8)
• Molecularmarkersofgastricemptying(viaradiopaquemarkers),GI
inflamma=on(fecalcalprotec=norlactoferrine),andmicrobiomestability(i.e.microbiomesequencebefore/aferaroundofan=bio=cs)(15)
• Validatedgut-healthques=onnaires(bowlhabits,GIsymptoms,andqualityoflife)
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ClinicalSubstan=a=onofProbio=csTheKGKAugmentedRandomizedControlledTrial:• StudyDesign:trialdesignthatfollowsatwostageprocess
v Stage1:Capturevaluableinforma=onastoop=malinclusioncriteria,dosing,andresponders
• Meta-analysisofseveralN-of-1trialsv Stage2:Confirmatorytrial,u=lizesinforma=ongatheredfromstage1toprovide
op=malInclusioncriteriainaRandomizeddouble-blindstudyOtherpointstoconsider:• Endpoints:Diseaseendpointsthatrelatetodrugscommonlyused
v KGKproposesdevelopmentofaglobalhealthindexforprobio=cs
• Popula9on:Challengeofrecrui=nghealthypopula=onswithsufficientlylowintake
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Summary• Themicrobiomeisthecatalogofallthemicrobesandtheir
respec=vegenesthatcolonizeourgut(andotherareasofthebody)
• Dietandsupplementscansignificantlyimpactthecomposi=on
ofthemicrobiomeandmaybeusedtoop=mizeitsfunc=on
• Ahealthymicrobiomeiscri=caltomaintainwellnessandmaycontributetothepreven=onofchroniccondi=ons
• Clinicalsubsta=onofsupplementsthatsupporthealthandwellnesswillcon=nuetobeofgreatimportance
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AboutKGKFounded in 1997 and built on a foundation of scientific excellence, KGK is the leading contract research organization in the Nutraceutical Industry. Working to substantiate claims of dietary supplements, functional foods, and other natural health products, KGK incorporates the highest quality standards and state-of-the-art scientific technique and technologies to satisfy our client needs. With clinics in Canada and the USA, KGK Clinical Trial Centers can efficiently develop and manage your research throughout North America. KGK is renowned internationally for our ethical and specialized study of natural health products
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References• [1]LederbergJ&McCrayAT.’Omesweet’omics—agenealogicaltreasuryofwords.Scien=st.
2001;15:8.• [2]UrsellL,MetcalfJ,ParfreyLW,&KnightR.DefiningtheHumanMicrobiome.NutrRev.2012;70:1.• [3]vanLeeuwenhoekA.AnabstractofalejerfromAntonievanLeeuwenhoek,Sep12,1683.About
animalsinthescrurfoftheteeth.PhilosophicalTransac=onsoftheRoyalSocietyofLondon.1684;15:568.
• [4]SelaD&MillsD.Nursingourmicrobiota:molecularlinkagesbetweenbifidobacteriaandmilkoligosaccharides.TrendsinMicrobiology.2010;18:7.
• [5]SmithMetal.GutmicrobiomesofMalawiantwinpairsdiscordantforKwashiorkor.Scinece.2013;339:6119.
• [6]Hilderbrandtetal.High-fatdietdeterminesthecomposi=onofthemurinegutmicrobiomeindependentlyofobesity.Gastroenterology.2009;137:5.
• [7]TurnbaughPetal.Acoregutmicrobiomeinobeseandleantwins.Nature.2009;457:480.• [8]KnightR.Knightlabresearch.UniversityofCalifornia.2016• [9]KnightR.Microbiomeresearchmaysoonpayoffbig.Scien=ficAmerican.
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References• [10]MessaoudiMetal.Assessmentofpsychotropic-likeproper=esofaprobio=cformula=on(Lactobacillus
helve=cusR0052andBifidobacteriumlongumR0175)inratsandhumansubjects.BrJNutr.2011;105:755-64.
• [11]SteenbergenL,SellaroR,vanHS,BoschJA,ColzatoLS.Arandomizedcontrolledtrialtotesttheeffectofmul=speciesprobio=csoncogni=vereac=vitytosadmood.BrainBehavImmun.2015;48:258-64.
• [12]SchmidtK,CowenPJ,HarmerCJ,TzortzisG,ErringtonS,BurnetPW.Prebio=cintakereducesthewakingcor=solresponseandaltersemo=onalbiasinhealthyvolunteers.Psychopharmacology(Berl).2015;232:1793-801.
• [13]AllenAP,HutchW,BorreYEetal.Bifidobacteriumlongum1714asatransla=onalpsychobio=c:modula=onofstress,electrophysiologyandneurocogni=oninhealthyvolunteers.TranslPsychiatry.2016;6:e939.
• [14]Kato-KataokaA,NishidaK,TakadaMetal.FermentedmilkcontainingLactobacilluscaseistrainShirotapreventstheonsetofphysicalsymptomsinmedicalstudentsunderacademicexamina=onstress.BenefMicrobes.2016;7:153-6.
• [15]Backhedetal.Definingahealthyhumangutmicrobiome:currentconcepts,futuredirec=ons,andclinicalapplica=ons.CellHost&Microbe.2012;12:5.
• [16]Blumbergetal.Evidence-basedcriteriainthenutri=onalcontext.Nutri=onReviews.2010.68;8:478-484.
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References• [17]Gibsonetal.TheDesignofProbio=cStudiestoSubstan=ateHealthClaims.GutMicrobes.
2011:5;2:299-305.• [18]Heaney,R.P.Nutrients,Endpoints,andtheProblemofProof.TheJournalofNutri=on.
2008:138;1591-1595.• [19]Heaneyetal.EBN(Evidence-BasedNutri=on)Ver2.0.Nutri=onToday.2011:46;1.• [20]Heaney,R.P.TheNutrientProblem.Nutri=onReviews.2012;70:3.• [21]Heaney,R.P.Guidelinesforop=mizingdesignandanalysisofclinicalstudiesofnutrienteffects.
Nutri=onReviews.2014;72:1.• [22]Nuzzo,R.Sta=s=calErrors:P-values,thegoldstandardofsta=s=calvalidity,arenotasreliableas
manyscien=stsassume.Nature.2014:506.• [23]Poonetal.SearchingforEvidenceinTradi=onalChineseMedicineResearch:AReviewandNew
Opportuni=es.DataAnaly=csforTradi=onalChineseMedicineResearch.2014:1-16.• [24]Shaneetal.Guidetodesigning,conduc=ng,publishingandcommunica=ngresultsofclinical
studiesinvolvingprobio=capplica=onsinhumanpar=cipants.GutMicrobes.2010:4;1.
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References• [25]Parahi=yawaetal.Exploringtheoralbacterialflora:currentstatusandfuturedirec=ons.2010:16.• [26]JamesKMetal.Inhibi=onofCandidaalbicansbiofilmforma=onandmodula=onofgene
expressionbyprobio=ccellsandsupernatant.2016:65;4.• [27]KolipDetal.Dentaq®OralandENTHealthProbio=cComplexreducesgingivalinflamma=onand
plaqueforma=oninadolescentorthodon=cpa=ents.2016• [28]MinisterofHealth,HealthCanada.TheEffectsofOralHealthonOverallHealth.August2008.
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How botanicals can benefit the gut
microbiota and its host?
Antoine Bily, Pascale Fança-Berthon
Demystifying microbiome research:
new opportunities for health & business Engredea, Thursday March 9th 2017
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ThehumanmicrobiotaThe term microbiota refers to the microbialpopu l a=on p r e sen t w i t h i n t he humanbody, including bacteria, viruses, archea,protozoans,andfungiRepresents109mesmore cells thanhuman cells:1-2kgofmaterial
1014Microorganismsinthegut
Gutmicrobiota genome =microbiome =100 to 150 =mes more genes than ourowngenomeIt is a hottopic
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Whatareitsfundamentalcharacteris=cs?Itisunique1000 species es=mated to bepartofthehumanmicrobiotaBut only 200 species perindividual ; each combina=onofspeciesisunique
Butfunc9onalac9vi9esofthemicrobiotaverysimilarfromahealthysubjecttoanother
It is possible to classify people according totheirenterotypei.e.,therela9veabundanceof3bacterialgroups:Bacteroides,PrevotellaandRuminococcus
Arumugam,Raesetal.Nature,2011
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Whatareitsmainroles?The whole community of gut microbiota serves manyfunc=ons:
Grenhametal.FrontPhysiol,2011
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What is dysbiosis?
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Dysbiosisdefini=onDuringhealthy,homeosta=ccondi=onsthemicrobiota is composed of a diversity oforganism. However, environmental factorscan lead to altera=ons of the ecologicorganiza=onofthegutmicrobiotavia:-Pathobiontexpansion-Reduceddiversity-Lossofbeneficialmicrobes
PetersenandRound.CellularMicrobiology,2014Sergeyatal.NatureReviewsGastroenterology&Hepatology,2013
Thisisdysbiosis,aswitchfroma
mutualis9cbeneficialrela9onshiptoa
pathologicalunbeneficialrela9onship:
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Obesity-relateddysbiosisandIR&steatosis
LossofdiversityPathobiontexpansion
Lossofbeneficialmicrobes
Leakygut–hypermeability
Lowgradeinflamma9on
Adipose3ssueMuscleLiver
Alteredglucose&lipidmetabolismSteatosis
Cani.NatRevEndocrinol.2014
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Howcanwereversedysbiosis?
Probio=cs are “livemicro-organisms which, whenadministered in adequate amounts,conferahealthbenefitonthehost“
(Defini=onFAO/WHO2012)
Prebio=csare“selec=velyfermentedingredientsthatpromotetheselec=ves=mula=onofgrowthand/orac=vi=esofoneoralimitednumberofmicrobialgenus(era)/speciesinthegutmicrobiotathatconfer(s)healthbenefitstothehost”(Defini=onfromGibson&Roberfroidetal,2010)
Symbio=cs
REBIOSIS:Establishingamicrobial
communitybacktoahealthystatePostbio=cs are “non-
viable bacterial products ormetabol ic byproducts fromprobio=c microorganisms thathavebiologicac=vityinthehost”(Defini=onPatel&Dening,2013)
Botanicals?
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Positive influence of a Fraxinus extract on
steatosis via gut microbiota modulation
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WhatisFraxinusangus3folia?• Fraxinusangus3foliaisatreeusuallyreferredtoas
narrow-leavedash
• Historically,FraxinuswaslargelylimitedtotheMediterraneanBasin,wherelocalpopula=onsuseditinfoodandinfusions,andforitshypoglycemiceffect1
• Glucevia®isanextractderivedexclusivelyfromthesamaraofFraxinusangus3folia
(1) Eddouks & Maghrani (2004) J. Ethnopharmacol.,94:149-154
ProductDescrip9on:PurifiedextractofFraxinussamaraStandardiza9on:>10%NuzhenideandGL3(=secoiridoids)viaHPLCSubstan9a9on:Clinicallyshowntoreducebloodglucose.ShowntoreducesteatosisinInvivoanimalmodels
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MetabolicsyndromeandLiverHealth
hjp://www.nashbiotechs.com/nash-biotech-analysis/nash-introduc=on/what-is-known-about-nash.html
• Non-alcoholicfaWyliverdisease(NAFLD)isoneofthecausesoffajyliver,occurringwhenfatisdeposited(steatosis)intheliverduetocausesotherthanexcessivealcoholuse.
• Non-alcoholicsteatohepa99s(NASH)isthemostextremeformofNAFLD,andisregardedasamajorcauseofcirrhosisoftheliverofunknowncause
• Causeiss=llunknownbutobesityandinsulinresistancelikelyplayastrongroleinpathology
• NASHisgenerallyrecognizedastheliver’sexpressionofMetabolicSyndrome
WorldGastroenterologyOrganiza=on,2012Arslan.WorldJGastroenterol,2014
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Title:Glucevia®limitsweightgainsandhyperglycemiainhigh-fatdiet-inducedobesemicePopula9on:C57BL/6Jmalemice(5weeksofage)Dura9on:16weeksDesign:• HighFatDiet[60%fat](n=20)• HFD+0.5%Glucevia®(n=10)• LowFatDiet[60%fat](n=20)Outcomes:• Fas=ngbloodglucose• Fajylivers
Model:Highfatdietmice
-50%
-33%
Result:Significantlylowersthedevelopmentofhyperglycemiaazeradministra=onofahighfatdietby33%(p<0.001)
Result:Significantlyreducesfajyliverby50%
Ibarra et al. (2011) Phytomedicine,
Scien3ficsubstan3a3on–invivo
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Title:Ac=onofanextractfromtheseedsofGlucevia®onmetabolicdisordersinhypertensiveandobeseanimalmodelsPopula9on:Zuckerrats(8weeksold)Design:Administered,for5weeks,adietcontaining:• Nega=vecontrol:Noaddi=ve(n=6)• Posi=vecontrol:Me}ormin(n=6)• Glucevia(100mg/kgbw/day)(n=6)Outcomes:• Glucosewasfollowedduringthe5weeksstudyResults:• Significantlyreducesfas=ngbloodglucoseby
16%(p<0.001)• NosignificantdifferencebetweenGluceviaand
Me}ormin.(Me}orministhereferencedrugforbloodglucosemanagement)
Model:Obesemice
0 1 2 3 4 5
-50
-25
0
25
50
75
Control
FXE100Metformin
******
Weeks of treatment
ΔG
luco
se(m
g/dL
)
-16 %
Monto et al. (2014). Food&Function
Scien3ficsubstan3a3on–invivo
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Title:Preven=veEffectofaGlucevia®onHepa=cSteatosisinObeseType2Diabe=cMicePopula9on:BKS(db/db)femalemice(5weeksofage)Design:7monthsadministra=onofControldiet(n=10)DietwithGlucevia(0,7g/kgofdiet)(n=10)Outcomes:Metabolicbloodparameters(glucose,insulin,cholesterol,triglycerides)HistologicalanalysesofliverNAFLDbloodparameters
Results• Significantreduc=oninInsulin(p<0.05)• SignificantimprovementinInsulin
resistance(p<0.05)• Significantimprovementsinfajyliver
Model:Diabe3cmice
0
10
20
30
Control Glucevia™
Reduc9onoffatintheliver(in%)
-54%
-54%
Stained sections of livers from diabetic mice administered control or Glucevia® • Micrographs of H&E (a vs. b) • Oil red O (c vs. d)
Glucevia® Control
Gomez-Garcia et al. Journal of Diabetes & Metabolism, 2015
Scien3ficsubstan3a3on–invivo
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Title:AcuteeffectsofGlucevia®onpostprandialglycemiaandinsulinsecre=ononhealthyvolunteersPopula9on:16healthypeople(11male,5female;20-55y,BMI:26±2.2kg/m2).Design:Doubleblind,randomized,crossover(1weekwashoutperiod),acute,placebocontrolledclinicaltrial.Dose:1,000mgofGlucevia®oraPlacebo(Wheatbran),50gglucoseforOGTTOutcomes:Bloodglucose(0,15,30,45,60,90,120min)Results:Immediateandsignificantreduc=oninbloodglucoseAUCof9%(p>0.05)
AcuteHumanClinicalStudy
Visen et al., (2009) J. Ethnopharmacol., 126:226-232
020406080100
0 20 40 60 80 100 120B
lood
glu
cose
(mg/
dL)
Time (min)
Placeb
01000200030004000500060007000
Placebo Glucevia
Glu
cose
AU
C
(mg.
min
/dL)
- 9 % p<0.05
Scien3ficsubstan3a3on–clinical
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Title:Glucevia®benefitsglucosehomeostasisandadiposityrelatedmarkersinelderlyoverweight/obesesubjects:Alongitudinal,randomized,crossover,double-blind,placebo-controllednutri=onalinterven=onstudy.Popula9on:17healthyvolunteers(50-80y,BMI:>25kg/m2).Design:Doubleblind,randomized,cross-over(21daysforeacharm),placebocontrolledinterven=onstudywithoneweekwash-outbetweenarms.Interven9ons:• Recommenda=onforahealthydiet• 1,000mgofGlucevia®orplaceboOutcomes:• OGTTbeforeandazereacharm• MarkersofglycemiaResults:• Significantreduc=oninbloodglucose(AUC)of28%inGlucevia
groupvs.Non-significantreduc=onof8%inplacebogroup.
ChronicHumanClinicalStudy
Zulet et al. (2014) Phytomedicine 21: 1162–1169
020406080100
0 20 40 60 80 100 120
Blo
od g
luco
se (m
g/dL
)
Time (min)
Pre-Glucevia
Effectof3-weekGlucevia®administra=ononbloodglucoselevels
Scien3ficsubstan3a3on–clinical
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0
50
100
150
PriortoGluceviaAzerGluceviaPriortoplaceboAzerplacebo
2h b
lood
glu
cose
(mg/
dL)
-14.0 % p<0.05 -1.6 % n.s.
Results:Significant(p<0.05)reduc=onin2hbloodglucoselevel(-14%)observedRelevance:AccordingtotheWorldHealthOrganiza=onthe2hbloodglucosevalueisregardedasanindicatorofimpairedglucosetoleranceanddiabetes(>140mg/dL)
-20.00
-10.00
0.00
10.00
20.00
Glucevia Placebo
Cha
nge
in fr
ucto
sam
ine
(µM
)
p<0.05
Results:SignificantdifferenceinthechangeinfructosaminebetweengroupsRelevance:AccordingtoEFSA,Fructosamineisrelevantmarkerforglucosecontrolandthemostwidelyusedalterna=vetoHbA1c
Zulet et al. (2014) Phytomedicine 21: 1162–1169
Scien3ficsubstan3a3on–clinicalChronicHumanClinicalStudy-con3nued
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Title:TargetedanduntargetedmetabolomicstoexplorethebioavailabilityofthesecoiridoidsfromGlucevia®inhumanhealthyvolunteers:apreliminarystudy
Popula9on:10healthyvolunteers(23.5y,BMI<30kg/m²).Design:open-labelledacutesingledosebioavailabilitystudywithatargetedanduntargetedmetabolomicsmethodologyOutcomes:• Plasmametabolitesanalysisbeforeand1,2,4,8and24hazer
1000mgofGlucevia®intake• Urinemetabolitesanalysisbeforeand1,2,4,8and24hazer
1000mgofGlucevia®intakeResults:Noparentcompounds(nuzhenideandGL3)foundinurineorplasmaSomepredictedmetabolitesdetectedatlowintensityDetec=onofpoten=alphenolicconjugatesandsulfatesderiva=vesofsecoiridoidsfromphaseIand/ormicrobialenzymesConclusion:TheeffectsofGluceviaseemnottobelinkedtoadirecteffectsofitsparentcompoundsbuttoandirectorindirecteffectoftheirmetabolites(humanorgutmicrobiota-derived).
Garcia-Villalba (2015) Molecules 20: 22202–22219
Wheredoesefficacycomefrom?
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FajyLiver&MicrobiomeModula=onWorkingTitle:Glucevia®,aFraxinusangus3foliaVahlextract,isabletomodifythegutmicrobiotacomposi=onandthoseeffectsarecorrelatedwithsteatosisseverityinobeseanddiabe=cmice.Popula9on:MiceDesign:Administered,for12weeks,adietcontaining60%energyfromfatwithorwithoutGlucevia®(200mg/kgbw)Outcomes:Liverfatcontent,metagenomicsstudyonthefecalsamples
Unpublished
0
10
20
30
40
50
60
Control F.angus=folia
%offatcon
tentintoth
eliver
TheWorldGastroenterologyOrganiza=onhistologicalscoringsystemforsteatosis(Grade0:<5%,Grade1:5-33%,Grade2:34-66%,Grade3:>67%):Results:Control:35.2%-Grade2Glucevia®22.8%-Grade1(-35%vs.control)p=0.004
-35%,p=0.004
Control F.angus3folia
Glucevia protected against liver steatosis induced by 12 week high fat diet consumption in mice
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HFD60_T3
HFD60+F.angust_T3HFD60_T3HFD60+F.angust_T3
Glucevia induced some modifications of the gut microbiota composition in mice fed a HFD during 12 weeks
FajyLiver&MicrobiomeModula=on
Unpublished
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%OilRedLiverStain
%OilRedLiverStain
Rela9v
eab
unda
nce%
Rela9v
eab
unda
nce%
%OilRedLiverStain
%OilRedLiverStain
Rela9v
eab
unda
nce
%
Rela9v
eab
unda
nce
% %OilRedLiverStain
Rela9v
eab
unda
nce
%
The gut microbiota modifications are significantly correlated (positively or negatively depending on the bacterial groups) to the liver steatosis severity
FajyLiver&MicrobiomeModula=on
p=0.04
p=0.04
p=0.04
p=0.03
p=0.12
Unpublished
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LongitudinalclinicalstudyinpreparaIonPopula9on:SubjectssufferingfromsteatosisandNASH(fibrosisscore<2),n=50Dura9on:6monthsMainclinicalendpoints:Liverfatcontent,gutandbloodmicrobiotametagenomic(shotgun)Objec9ves:• Establishaproofofconceptofefficacyfor
improvementofNAFLDinhumans• DemonstratethatGluceviaisableto
modifythegutmicrobiomeinhumans• Demonstratethecorrela=onbetween
steatosisseverityandthemodifica=onofgutmicrobiomeinhumans
Con3nuedresearchprogram
Confirma=oninhumantobedone
Strategy for demonstrating the causative role of the gut microbiota in chronic diseases.
Zao.NatRevMicrob.2013
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Howcanwereversedysbiosis?
Probio=cs are “livemicro-organisms which, whenadministered in adequate amounts,conferahealthbenefitonthehost“
(Defini=onFAO/WHO2012)
Prebio=csare“selec=velyfermentedingredientsthatpromotetheselec=ves=mula=onofgrowthand/orac=vi=esofoneoralimitednumberofmicrobialgenus(era)/speciesinthegutmicrobiotathatconfer(s)healthbenefitstothehost”(Defini=onfromGibson&Roberfroidetal,2010)
Symbio=cs
REBIOSIS:Establishingamicrobial
communitybacktoahealthystatePostbio=cs are “non-
viable bacterial products ormetabol ic byproducts fromprobio=c microorganisms thathavebiologicac=vityinthehost”(Defini=onPatel&Dening,2013)
Botanicals!Revisited & enlarged definition of prebiotics Bindels et al, Nat. Rev. Gastroenterol. Hepatol, 2015
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Not an isolated case…
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Therosemaryextractexample
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Thehopextractexample
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Acknowledgments
Leila Falcao
Melissa Feuillatre
R&D team
Elodie Riant
Aurélie Waget
Rémy Burcelin
Pierre Gourdy
Inserm UMR 1048/I2MC
Diabetology department ,
CHU de Toulouse Rocío García-Villalba
Pilar Zafrilla
María-Teresa García-Conesa
Francisco A. Tomás-Barberán
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Thank you for your attention!
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