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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 Developm...
Sexually Dimorphic Impacts of Placental Endocrine Function: Unraveling Cerebellar Development and Inflammation Through Allopregnanolone Loss

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자료유형  
 학위논문 서양
최종처리일시  
20250211151519
ISBN  
9798383046500
DDC  
616
저자명  
Salzbank, Jacquelyn Moriya.
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  
Autism spectrum disorder
키워드  
Cerebellum
키워드  
Microglia
키워드  
Myelination
키워드  
Neuroplacentology
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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■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.

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