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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]
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
- 발행, 배포, 간사 사항
- 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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