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Role of Gut Microbiota in Morphine-induced Analgesic Tolerance.- [electronic resource]
Role of Gut Microbiota in Morphine-induced Analgesic Tolerance. - [electronic resource]  /...
Role of Gut Microbiota in Morphine-induced Analgesic Tolerance.- [electronic resource]

상세정보

자료유형  
 학위논문(국외)
자관 청구기호  
기본표목-개인명  
표제와 책임표시사항  
Role of Gut Microbiota in Morphine-induced Analgesic Tolerance. - [electronic resource] / Zhang, Li.
발행, 배포, 간사 사항  
[S.l.] : University of Minnesota. , 2019
    발행, 배포, 간사 사항  
    Ann Arbor : ProQuest Dissertations & Theses , 2019
      형태사항  
      1 online resource(158 p.)
      일반주기  
      Source: Dissertations Abstracts International, Volume: 81-04, Section: B.
      일반주기  
      Advisor: Roy, Sabita.
      학위논문주기  
      Thesis (Ph.D.)--University of Minnesota, 2019.
      이용제한주기  
      This item must not be sold to any third party vendors.
      요약 등 주기  
      요약Prolonged exposure to opioids results in analgesic tolerance, drug overdose, and death. The mechanism underlying morphine analgesic tolerance still remains unresolved. Currently, there are studies focusing on the role of the gut microbiota and its interactions with gut and brain (the microbiota-gut-brain axis) in substance abuse, especially opioid abuse. The microbiota-gut-brain axis is a bidirectional communication between central nervous system and gastrointestinal system. Emerging literature provides evidence that the gut microbiota orchestrates neurogenesis, brain development and function, as well as blood-brain-barrier integrity, and host behavior through vagal afferents, gut hormones, cytokines, and microbial metabolites. Gut dysbiosis disrupts the homeostasis between brain and gut in neurodegenerative disorder, central nervous system injury, and exacerbates disease progression. In opioid abuse subjects, increased comorbidity and behavioral changes are found to be associated with impaired gut integrity and bacterial translocation. We show that morphine analgesic tolerance was significantly attenuated in germ-free (GF) and in pan-antibiotic-treated (ABX) mice. Reconstitution of GF mice with naive fecal microbiota reinstated morphine analgesic tolerance. We further demonstrated that tolerance was associated with microbial dysbiosis with selective depletion in Bifidobacteria and Lactobacillaeae. Probiotics, enriched with these bacteria, attenuated analgesic tolerance in morphine-treated mice. These results suggest that probiotics therapy during morphine administration may be a promising, safe, and inexpensive treatment to prolong morphine's efficacy and attenuate analgesic tolerance. We hypothesize a vicious cycle of chronic morphine tolerance: morphine-induced gut dysbiosis leads to gut barrier disruption and bacterial translocation, initiating local gut inflammation through TLR2/4 activation, resulting in the activation of pro-inflammatory cytokines, which drives morphine tolerance.
      주제명부출표목-일반주제명  
      주제명부출표목-일반주제명  
      주제명부출표목-일반주제명  
      부출표목-단체명  
      기본자료저록  
      Dissertations Abstracts International. 81-04B.
      기본자료저록  
      Dissertation Abstract International
      전자적 위치 및 접속  
       원문정보보기

      MARC

       008200317s2019        ulk          s          00        eng
      ■001000015493672
      ■00520200217182212
      ■007cr
      ■020    ▼a9781687963833
      ■040    ▼d225006
      ■08204▼a616
      ■090    ▼a전자도서(박사논문)
      ■1001  ▼aZhang,  Li.
      ■24510▼aRole  of  Gut  Microbiota  in  Morphine-induced  Analgesic  Tolerance.▼h[electronic  resource]  ▼cZhang,  Li.
      ■260    ▼a[S.l.]▼bUniversity  of  Minnesota.  ▼c2019
      ■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2019
      ■300    ▼a1  online  resource(158  p.)
      ■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  81-04,  Section:  B.
      ■500    ▼aAdvisor:  Roy,  Sabita.
      ■5021  ▼aThesis  (Ph.D.)--University  of  Minnesota,  2019.
      ■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
      ■520    ▼aProlonged  exposure  to  opioids  results  in  analgesic  tolerance,  drug  overdose,  and  death.  The  mechanism  underlying  morphine  analgesic  tolerance  still  remains  unresolved.  Currently,  there  are  studies  focusing  on  the  role  of  the  gut  microbiota  and  its  interactions  with  gut  and  brain  (the  microbiota-gut-brain  axis)  in  substance  abuse,  especially  opioid  abuse.  The  microbiota-gut-brain  axis  is  a  bidirectional  communication  between  central  nervous  system  and  gastrointestinal  system.  Emerging  literature  provides  evidence  that  the  gut  microbiota  orchestrates  neurogenesis,  brain  development  and  function,  as  well  as  blood-brain-barrier  integrity,  and  host  behavior  through  vagal  afferents,  gut  hormones,  cytokines,  and  microbial  metabolites.  Gut  dysbiosis  disrupts  the  homeostasis  between  brain  and  gut  in  neurodegenerative  disorder,  central  nervous  system  injury,  and  exacerbates  disease  progression.  In  opioid  abuse  subjects,  increased  comorbidity  and  behavioral  changes  are  found  to  be  associated  with  impaired  gut  integrity  and  bacterial  translocation.  We  show  that  morphine  analgesic  tolerance  was  significantly  attenuated  in  germ-free  (GF)  and  in  pan-antibiotic-treated  (ABX)  mice.  Reconstitution  of  GF  mice  with  naive  fecal  microbiota  reinstated  morphine  analgesic  tolerance.  We  further  demonstrated  that  tolerance  was  associated  with  microbial  dysbiosis  with  selective  depletion  in  Bifidobacteria  and  Lactobacillaeae.  Probiotics,  enriched  with  these  bacteria,  attenuated  analgesic  tolerance  in  morphine-treated  mice.  These  results  suggest  that  probiotics  therapy  during  morphine  administration  may  be  a  promising,  safe,  and  inexpensive  treatment  to  prolong  morphine's  efficacy  and  attenuate  analgesic  tolerance.  We  hypothesize  a  vicious  cycle  of  chronic  morphine  tolerance:  morphine-induced  gut  dysbiosis  leads  to  gut  barrier  disruption  and  bacterial  translocation,  initiating  local  gut  inflammation  through  TLR2/4  activation,  resulting  in  the  activation  of  pro-inflammatory  cytokines,  which  drives  morphine  tolerance.
      ■650  4▼aPharmacology.
      ■650  4▼aBehavioral  sciences.
      ■650  4▼aImmunology.
      ■71020▼aUniversity  of  Minnesota▼bPharmacology.
      ■7730  ▼tDissertations  Abstracts  International▼g81-04B.
      ■773    ▼tDissertation  Abstract  International
      ■791    ▼aPh.D.
      ■792    ▼a2019
      ■793    ▼aEnglish
      ■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T15493672▼nKERIS

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