본문

서브메뉴

NMDA Receptor Ablation Alters Synaptic Function and Connectivity at Mouse Medial Prefrontal Cortex Synapses
NMDA Receptor Ablation Alters Synaptic Function and Connectivity at Mouse Medial Prefronta...
NMDA Receptor Ablation Alters Synaptic Function and Connectivity at Mouse Medial Prefrontal Cortex Synapses

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105133
ISBN  
9798293866731
DDC  
616
저자명  
Dick, Rachel Miriam.
서명/저자  
NMDA Receptor Ablation Alters Synaptic Function and Connectivity at Mouse Medial Prefrontal Cortex Synapses
발행사항  
[Sl] : University of Minnesota, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
135 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Rothwell, Patrick E.
학위논문주기  
Thesis (Ph.D.)--University of Minnesota, 2025.
초록/해제  
요약The glutamate hypothesis of schizophrenia posits that patients' symptoms arise from abnormal corticolimbic glutamatergic signaling, which is supported by evidence of abnormal expression of N-methyl-D-aspartate receptors (NMDARs) and decreased dendritic spine density in the prefrontal cortex (PFC). Pharmacological blockade of NMDARs in humans and animal models induces psychotomimetic symptoms, cognitive deficits, and decreased neural synchrony, with genetic knockdown of NMDARs providing further evidence of altered spine density and synaptic transmission. However, it is unknown how chronic loss of NMDARs in the PFC during adolescence - a developmental period associated with significant synaptic pruning and symptom onset in patients - affects spine density and neurotransmission, and whether compensatory mechanisms emerge over time. In this study, we used in vivo genome editing to ablate expression of the Grin1 gene, which encodes the obligate GluN1 subunit of NMDARs, in neurons in the medial PFC of female and male adolescent mice. We assessed synaptic density and function in layer V pyramidal neurons at multiple time points using whole-cell patch-clamp electrophysiology, integrated with confocal imaging of dendritic spine architecture in recorded neurons. NMDAR ablation caused an early decrease in basilar dendritic spine density, followed by a rebound over baseline in spine density and a corresponding increase in AMPAR-mediated synaptic transmission. Inhibitory spontaneous neurotransmission was also increased, suggesting that synaptic compensation maintains an allostatic set point. Our findings demonstrate that NMDAR ablation initially disrupts local PFC networks, followed by recovery via compensatory processes that may be impaired in the disease state.
일반주제명  
Neurosciences
일반주제명  
Bioinformatics
일반주제명  
Genetics
키워드  
Computational modeling
키워드  
Genome editing
키워드  
Prefrontal cortex
키워드  
Schizophrenia
키워드  
Synaptic physiology
기타저자  
University of Minnesota Neuroscience
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

 008260126s2025        us                              c    eng  d
■001000017359528
■00520260202105133
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798293866731
■035    ▼a(MiAaPQ)AAI32239375
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a616
■1001  ▼aDick,  Rachel  Miriam.
■24510▼aNMDA  Receptor  Ablation  Alters  Synaptic  Function  and  Connectivity  at  Mouse  Medial  Prefrontal  Cortex  Synapses
■260    ▼a[Sl]▼bUniversity  of  Minnesota▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a135  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Rothwell,  Patrick  E.
■5021  ▼aThesis  (Ph.D.)--University  of  Minnesota,  2025.
■520    ▼aThe  glutamate  hypothesis  of  schizophrenia  posits  that  patients'  symptoms  arise  from  abnormal  corticolimbic  glutamatergic  signaling,  which  is  supported  by  evidence  of  abnormal  expression  of  N-methyl-D-aspartate  receptors  (NMDARs)  and  decreased  dendritic  spine  density  in  the  prefrontal  cortex  (PFC).  Pharmacological  blockade  of  NMDARs  in  humans  and  animal  models  induces  psychotomimetic  symptoms,  cognitive  deficits,  and  decreased  neural  synchrony,  with  genetic  knockdown  of  NMDARs  providing  further  evidence  of  altered  spine  density  and  synaptic  transmission.  However,  it  is  unknown  how  chronic  loss  of  NMDARs  in  the  PFC  during  adolescence  -  a  developmental  period  associated  with  significant  synaptic  pruning  and  symptom  onset  in  patients  -  affects  spine  density  and  neurotransmission,  and  whether  compensatory  mechanisms  emerge  over  time.  In  this  study,  we  used  in  vivo  genome  editing  to  ablate  expression  of  the  Grin1  gene,  which  encodes  the  obligate  GluN1  subunit  of  NMDARs,  in  neurons  in  the  medial  PFC  of  female  and  male  adolescent  mice.  We  assessed  synaptic  density  and  function  in  layer  V  pyramidal  neurons  at  multiple  time  points  using  whole-cell  patch-clamp  electrophysiology,  integrated  with  confocal  imaging  of  dendritic  spine  architecture  in  recorded  neurons.  NMDAR  ablation  caused  an  early  decrease  in  basilar  dendritic  spine  density,  followed  by  a  rebound  over  baseline  in  spine  density  and  a  corresponding  increase  in  AMPAR-mediated  synaptic  transmission.  Inhibitory  spontaneous  neurotransmission  was  also  increased,  suggesting  that  synaptic  compensation  maintains  an  allostatic  set  point.  Our  findings  demonstrate  that  NMDAR  ablation  initially  disrupts  local  PFC  networks,  followed  by  recovery  via  compensatory  processes  that  may  be  impaired  in  the  disease  state.
■590    ▼aSchool  code:  0130.
■650  4▼aNeurosciences
■650  4▼aBioinformatics
■650  4▼aGenetics
■653    ▼aComputational  modeling
■653    ▼aGenome  editing
■653    ▼aPrefrontal  cortex
■653    ▼aSchizophrenia
■653    ▼aSynaptic  physiology
■690    ▼a0317
■690    ▼a0369
■690    ▼a0715
■71020▼aUniversity  of  Minnesota▼bNeuroscience.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0130
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359528▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

Preview

Export

ChatGPT Discussion

AI Recommended Related Books


    New Books MORE
    Statistics for the past 3 years. Go to brief

    Подробнее информация.

    • Бронирование
    • не существует
    • моя папка
    • Первый запрос зрения
    • Non-Book Loan Application
    • Nighttime Book Loan Application
    материал
    Reg No. Количество платежных Местоположение статус Ленд информации
    TF16698 전자도서 대출가능 My Folder 부재도서신고 비도서대출신청 야간 도서대출신청

    * Бронирование доступны в заимствований книги. Чтобы сделать предварительный заказ, пожалуйста, нажмите кнопку бронирование

    Books borrowed together with this book

    Related Popular Books

    Available after logging in.