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Sexually Dimorphic Impacts of Placental Endocrine Function: Unraveling Cerebellar Development and Inflammation Through Allopregnanolone Loss
Sexually Dimorphic Impacts of Placental Endocrine Function: Unraveling Cerebellar Development and Inflammation Through Allopregnanolone Loss
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151519
- ISBN
- 9798383046500
- DDC
- 616
- 서명/저자
- Sexually Dimorphic Impacts of Placental Endocrine Function: Unraveling Cerebellar Development and Inflammation Through Allopregnanolone Loss
- 발행사항
- [Sl] : Columbia University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 156 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Penn, Anna.
- 학위논문주기
- Thesis (Ph.D.)--Columbia University, 2024.
- 초록/해제
- 요약The placenta plays a vital role in a healthy pregnancy by supporting the intricacies of fetal development. Over 10% of pregnancies experience impaired placental function, resulting in the loss of critical neuroactive steroids the fetal brain cannot yet make, thus leaving them vulnerable to perinatal brain injury and abnormal neurodevelopment. However, this vulnerability is not always equal. Many neurodevelopmental disorders exhibit a sex bias in incidence and severity. I hypothesize that loss of placental support during pregnancy results in sex differences in both behavioral presentation as well as on the cellular and transcriptomic levels. Utilizing the akr1c14cyp19aKO (plKO) mouse model, which features placenta-specific allopregnanolone (ALLO) knockdown, I investigated the sex specific impact of placental hormones on cerebellar development. Here I show that placental ALLO is essential for cerebellar white matter development and inflammatory regulation via microglial function. Male mice without placental ALLO exhibit signs of placental inflammation, accelerated postnatal myelination, and defects in microglial phagocytosis of excess myelin. Alternatively, females seem to be more resilient with a progressive anti-inflammatory profile across development and reduced myelination. Additionally male plKO show autism- like behaviors such as deficits in social behavior and increased stereotyped behavior. The females do not exhibit this phenotype. My main goals were threefold; to investigate how male and female inflammatory profiles differ and where this difference originates, to investigate how this inflammation impacts microglia and thereby oligodendrocytes, and how I can alter microglial function in a way to improve plKO outcomes. Mechanistically, these changes appear to be in part due to baseline sex differences in response to inflammatory stimuli which prime microglia to differentially support the surrounding white matter. Together, this work supports a novel link between placental ALLO loss, microglial function, and sex specific presentation of neurodevelopmental disorders.
- 일반주제명
- Neurosciences
- 일반주제명
- Obstetrics
- 일반주제명
- Developmental psychology
- 키워드
- Cerebellum
- 키워드
- Microglia
- 키워드
- Myelination
- 키워드
- Placenta
- 기타저자
- Columbia University Cellular Molecular and Biomedical Studies
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151519
■006m o d
■007cr#unu||||||||
■020 ▼a9798383046500
■035 ▼a(MiAaPQ)AAI31301258
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aSalzbank, Jacquelyn Moriya.
■24510▼aSexually Dimorphic Impacts of Placental Endocrine Function: Unraveling Cerebellar Development and Inflammation Through Allopregnanolone Loss
■260 ▼a[Sl]▼bColumbia University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a156 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Penn, Anna.
■5021 ▼aThesis (Ph.D.)--Columbia University, 2024.
■520 ▼aThe placenta plays a vital role in a healthy pregnancy by supporting the intricacies of fetal development. Over 10% of pregnancies experience impaired placental function, resulting in the loss of critical neuroactive steroids the fetal brain cannot yet make, thus leaving them vulnerable to perinatal brain injury and abnormal neurodevelopment. However, this vulnerability is not always equal. Many neurodevelopmental disorders exhibit a sex bias in incidence and severity. I hypothesize that loss of placental support during pregnancy results in sex differences in both behavioral presentation as well as on the cellular and transcriptomic levels. Utilizing the akr1c14cyp19aKO (plKO) mouse model, which features placenta-specific allopregnanolone (ALLO) knockdown, I investigated the sex specific impact of placental hormones on cerebellar development. Here I show that placental ALLO is essential for cerebellar white matter development and inflammatory regulation via microglial function. Male mice without placental ALLO exhibit signs of placental inflammation, accelerated postnatal myelination, and defects in microglial phagocytosis of excess myelin. Alternatively, females seem to be more resilient with a progressive anti-inflammatory profile across development and reduced myelination. Additionally male plKO show autism- like behaviors such as deficits in social behavior and increased stereotyped behavior. The females do not exhibit this phenotype. My main goals were threefold; to investigate how male and female inflammatory profiles differ and where this difference originates, to investigate how this inflammation impacts microglia and thereby oligodendrocytes, and how I can alter microglial function in a way to improve plKO outcomes. Mechanistically, these changes appear to be in part due to baseline sex differences in response to inflammatory stimuli which prime microglia to differentially support the surrounding white matter. Together, this work supports a novel link between placental ALLO loss, microglial function, and sex specific presentation of neurodevelopmental disorders.
■590 ▼aSchool code: 0054.
■650 4▼aNeurosciences
■650 4▼aObstetrics
■650 4▼aDevelopmental psychology
■653 ▼aAutism spectrum disorder
■653 ▼aCerebellum
■653 ▼aMicroglia
■653 ▼aMyelination
■653 ▼aNeuroplacentology
■653 ▼aPlacenta
■690 ▼a0317
■690 ▼a0620
■690 ▼a0380
■71020▼aColumbia University▼bCellular, Molecular and Biomedical Studies.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0054
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162060▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


