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Neural and Homeostatic Regulation of Rapid Eye Movement Sleep by the Preoptic Area and Tuberomammillary Nucleus
Neural and Homeostatic Regulation of Rapid Eye Movement Sleep by the Preoptic Area and Tuberomammillary Nucleus
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211150943
- ISBN
- 9798382834160
- DDC
- 615
- 저자명
- Maurer, John J.
- 서명/저자
- Neural and Homeostatic Regulation of Rapid Eye Movement Sleep by the Preoptic Area and Tuberomammillary Nucleus
- 발행사항
- [Sl] : University of Pennsylvania, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 159 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Chung, Shinjae.
- 학위논문주기
- Thesis (Ph.D.)--University of Pennsylvania, 2024.
- 초록/해제
- 요약Sleep states and transitions between them are regulated by diverse neuronal populations found throughout the brain and are influenced by homeostatic sleep pressure. The preoptic area (POA) in the anterior hypothalamus is crucial for sleep, where most neurons are active during rapid eye movement sleep (REMs). In contrast, the tuberomammillary nucleus with histamine neurons (TMNHIS) regulates wakefulness. Interactions between the POA and TMN are thought to occur through mutual inhibition such that if one population becomes active this inhibits the opposing nuclei. The POA sends dense GABAergic projections to the TMN (POAGAD2→TMN) that are critical for sleep regulation. While the POA and TMN are known to be involved in sleep and wake respectively, it is still unknown how they mutually interact to regulate REMs and whether they integrate homeostatic pressure for REMs. This dissertation seeks to elucidate a circuit mechanism by which interactions between the POA and TMN regulate neural and homeostatic REMs. This research used a multidisciplinary approach in the context of spontaneous sleep or during high REMs pressure incorporating genetic mouse models to label specific cell types, fiber photometry to record in vivo neural activity, and inhibitory optogenetics to manipulate cell bodies and axon projections. We show that the POAGAD2→TMN neurons gradually increase activity during NREMs → REMs transitions, while TMNHIS neurons progressively decrease activity during NREMs. Sustained optogenetic inhibition of POAGAD2→TMN neurons reduces REMs, whereas inhibition of TMNHIS neurons increases REMs, suggesting that the POAGAD2→TMN neurons are necessary for REMs regulation. To probe whether the POAGAD2→TMN neurons encode homeostatic REMs pressure, we implemented a novel REMs restriction protocol that produces stereotypical REMs rebound behavior. During heightened REMs pressure, the POAGAD2→TMN neural activity becomes more frequent during NREMs, suggesting an adaptive mechanism to drive entry into REMs. Moreover, sustained optogenetic inhibition of POAGAD2→TMN neurons during high REMs pressure decreases REMs and attenuates the REMs rebound. Collectively, we identify a neural mechanism by which the POAGAD2→TMN and TMN HIS neurons coordinate their activity for REMs and a homeostatic mechanism of a hypothalamic circuit whose activity mirrors the buildup of homeostatic REMs pressure during restriction and that is necessary for REMs rebound.
- 일반주제명
- Pharmacology
- 일반주제명
- Physiology
- 일반주제명
- Neurosciences
- 키워드
- Preoptic area
- 키워드
- REMs regulation
- 키워드
- Homeostatic
- 키워드
- Sleep states
- 기타저자
- University of Pennsylvania Pharmacology
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211150943
■006m o d
■007cr#unu||||||||
■020 ▼a9798382834160
■035 ▼a(MiAaPQ)AAI30992054
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a615
■1001 ▼aMaurer, John J.
■24510▼aNeural and Homeostatic Regulation of Rapid Eye Movement Sleep by the Preoptic Area and Tuberomammillary Nucleus
■260 ▼a[Sl]▼bUniversity of Pennsylvania▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a159 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Chung, Shinjae.
■5021 ▼aThesis (Ph.D.)--University of Pennsylvania, 2024.
■520 ▼aSleep states and transitions between them are regulated by diverse neuronal populations found throughout the brain and are influenced by homeostatic sleep pressure. The preoptic area (POA) in the anterior hypothalamus is crucial for sleep, where most neurons are active during rapid eye movement sleep (REMs). In contrast, the tuberomammillary nucleus with histamine neurons (TMNHIS) regulates wakefulness. Interactions between the POA and TMN are thought to occur through mutual inhibition such that if one population becomes active this inhibits the opposing nuclei. The POA sends dense GABAergic projections to the TMN (POAGAD2→TMN) that are critical for sleep regulation. While the POA and TMN are known to be involved in sleep and wake respectively, it is still unknown how they mutually interact to regulate REMs and whether they integrate homeostatic pressure for REMs. This dissertation seeks to elucidate a circuit mechanism by which interactions between the POA and TMN regulate neural and homeostatic REMs. This research used a multidisciplinary approach in the context of spontaneous sleep or during high REMs pressure incorporating genetic mouse models to label specific cell types, fiber photometry to record in vivo neural activity, and inhibitory optogenetics to manipulate cell bodies and axon projections. We show that the POAGAD2→TMN neurons gradually increase activity during NREMs → REMs transitions, while TMNHIS neurons progressively decrease activity during NREMs. Sustained optogenetic inhibition of POAGAD2→TMN neurons reduces REMs, whereas inhibition of TMNHIS neurons increases REMs, suggesting that the POAGAD2→TMN neurons are necessary for REMs regulation. To probe whether the POAGAD2→TMN neurons encode homeostatic REMs pressure, we implemented a novel REMs restriction protocol that produces stereotypical REMs rebound behavior. During heightened REMs pressure, the POAGAD2→TMN neural activity becomes more frequent during NREMs, suggesting an adaptive mechanism to drive entry into REMs. Moreover, sustained optogenetic inhibition of POAGAD2→TMN neurons during high REMs pressure decreases REMs and attenuates the REMs rebound. Collectively, we identify a neural mechanism by which the POAGAD2→TMN and TMN HIS neurons coordinate their activity for REMs and a homeostatic mechanism of a hypothalamic circuit whose activity mirrors the buildup of homeostatic REMs pressure during restriction and that is necessary for REMs rebound.
■590 ▼aSchool code: 0175.
■650 4▼aPharmacology
■650 4▼aPhysiology
■650 4▼aNeurosciences
■653 ▼aPreoptic area
■653 ▼aRapid eye movement
■653 ▼aREMs regulation
■653 ▼aHomeostatic
■653 ▼aTuberomammillary nucleus
■653 ▼aSleep states
■690 ▼a0419
■690 ▼a0317
■690 ▼a0719
■71020▼aUniversity of Pennsylvania▼bPharmacology.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0175
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160251▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


