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Neuroimmune Regulation of Plasticity in the Maternal Brain and Response to Peripartum Perturbations
Neuroimmune Regulation of Plasticity in the Maternal Brain and Response to Peripartum Perturbations
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105206
- ISBN
- 9798290955070
- DDC
- 616
- 저자명
- Dye, Courtney N.
- 서명/저자
- Neuroimmune Regulation of Plasticity in the Maternal Brain and Response to Peripartum Perturbations
- 발행사항
- [Sl] : The Ohio State University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 269 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Lenz, Kathryn M.;Leuner, Benedetta.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2024.
- 초록/해제
- 요약Pregnancy is a time of dramatic peripheral immune alterations to promote the development and later care for the offspring. However, these changes lend vulnerability to mental illness for some mothers, the most prominent being Postpartum Depression (PPD). In this dissertation, I aimed to investigate the role of the innate brain immune cell, microglia, in the maternal brain and its role in governing maternal mental health and behavior. Microglia decrease during late pregnancy, and these decreases persist postpartum. I first investigated whether microglia decreases are permissive for the onset and display of maternal care. Depleting microglia in a nulliparous maternal sensitization paradigm, I found that loss of microglia was sufficient for the display of caretaking behaviors. This was accompanied by changes in cellular activation across the maternal brain network.After establishing the functional importance of decreased microglia in facilitating maternal behavior, I investigated whether perturbations during pregnancy disrupted the maternal neuroimmune milieu. I also examined if neuroimmune changes were associated with impairments in care. I employed two different models of environmental perturbations I hypothesized would lead to neuroimmune alterations: gestational stress and chronic opioid exposure. Following exposure to chronic stress from gestational days (GD) 7-20, I examined microglia activity at GD21 and at postpartum day 8 (PD8). Immunolabeling of microglia and phagolysosomal marker CD68 increased in the postpartum medial prefrontal cortex (mPFC) in stressed mothers. A Nanostring nCounter panel revealed broad downregulation in stressed mothers of transcripts involved in immune activating and immune dampening effects, indicating dysregulated neuroimmune function at both GD21 and PD8 in the mPFC. Transcript alterations were also found for factors that control excitatory and inhibitory neuronal signaling, as well as components of the extracellular matrix (ECM). We did not see any changes in excitatory synaptic protein following additional immunolabeling at these time points. Next, we assessed the impact of gestational stress on perineuronal nets (PNNs), specialized ECM proteins. We found significant reductions in PNNs in the mPFC following gestational stress at both GD21 and PD8. We collected tissue at PD6 and found microglia phagocytosis of PNNs was increased in stressed mothers, likely contributing to the reductions in PNN number present at PD8. In a final study, I administered either oxycodone, buprenorphine, or a vehicle control before, during, and after pregnancy to model both illicit opioid use and medication assisted therapy during the peripartum period. Mothers treated with opioids displayed stark reductions in maternal behaviors across the postpartum period. I then examined relevant indicators of neuroinflammatory activity across the maternal brain network. The region where we saw the most pronounced changes was the periaqueductal grey. This included increased microglia staining in oxycodone mothers, and increased astrocyte staining in buprenorphine mothers compared to vehicle. We also found increases in IL1B, TNF, and TLR4 in oxycodone mothers in this region. Overall, this work demonstrates the importance of the central immune system in facilitating maternal care. Together these studies provide a necessary foundation for furthering investigation of microglia and the neuroimmune system in developing treatments to support maternal care.
- 일반주제명
- Neurosciences
- 일반주제명
- Immunology
- 일반주제명
- Mental health
- 일반주제명
- Obstetrics
- 키워드
- Pregnancy
- 키워드
- Postpartum
- 키워드
- Microglia
- 키워드
- Stress
- 기타저자
- The Ohio State University Neuroscience Graduate Studies Program
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105206
■006m o d
■007cr#unu||||||||
■020 ▼a9798290955070
■035 ▼a(MiAaPQ)AAI32262305
■035 ▼a(MiAaPQ)OhioLINKosu1721041664744806
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a616
■1001 ▼aDye, Courtney N.
■24510▼aNeuroimmune Regulation of Plasticity in the Maternal Brain and Response to Peripartum Perturbations
■260 ▼a[Sl]▼bThe Ohio State University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a269 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Lenz, Kathryn M.;Leuner, Benedetta.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2024.
■520 ▼aPregnancy is a time of dramatic peripheral immune alterations to promote the development and later care for the offspring. However, these changes lend vulnerability to mental illness for some mothers, the most prominent being Postpartum Depression (PPD). In this dissertation, I aimed to investigate the role of the innate brain immune cell, microglia, in the maternal brain and its role in governing maternal mental health and behavior. Microglia decrease during late pregnancy, and these decreases persist postpartum. I first investigated whether microglia decreases are permissive for the onset and display of maternal care. Depleting microglia in a nulliparous maternal sensitization paradigm, I found that loss of microglia was sufficient for the display of caretaking behaviors. This was accompanied by changes in cellular activation across the maternal brain network.After establishing the functional importance of decreased microglia in facilitating maternal behavior, I investigated whether perturbations during pregnancy disrupted the maternal neuroimmune milieu. I also examined if neuroimmune changes were associated with impairments in care. I employed two different models of environmental perturbations I hypothesized would lead to neuroimmune alterations: gestational stress and chronic opioid exposure. Following exposure to chronic stress from gestational days (GD) 7-20, I examined microglia activity at GD21 and at postpartum day 8 (PD8). Immunolabeling of microglia and phagolysosomal marker CD68 increased in the postpartum medial prefrontal cortex (mPFC) in stressed mothers. A Nanostring nCounter panel revealed broad downregulation in stressed mothers of transcripts involved in immune activating and immune dampening effects, indicating dysregulated neuroimmune function at both GD21 and PD8 in the mPFC. Transcript alterations were also found for factors that control excitatory and inhibitory neuronal signaling, as well as components of the extracellular matrix (ECM). We did not see any changes in excitatory synaptic protein following additional immunolabeling at these time points. Next, we assessed the impact of gestational stress on perineuronal nets (PNNs), specialized ECM proteins. We found significant reductions in PNNs in the mPFC following gestational stress at both GD21 and PD8. We collected tissue at PD6 and found microglia phagocytosis of PNNs was increased in stressed mothers, likely contributing to the reductions in PNN number present at PD8. In a final study, I administered either oxycodone, buprenorphine, or a vehicle control before, during, and after pregnancy to model both illicit opioid use and medication assisted therapy during the peripartum period. Mothers treated with opioids displayed stark reductions in maternal behaviors across the postpartum period. I then examined relevant indicators of neuroinflammatory activity across the maternal brain network. The region where we saw the most pronounced changes was the periaqueductal grey. This included increased microglia staining in oxycodone mothers, and increased astrocyte staining in buprenorphine mothers compared to vehicle. We also found increases in IL1B, TNF, and TLR4 in oxycodone mothers in this region. Overall, this work demonstrates the importance of the central immune system in facilitating maternal care. Together these studies provide a necessary foundation for furthering investigation of microglia and the neuroimmune system in developing treatments to support maternal care.
■590 ▼aSchool code: 0168.
■650 4▼aNeurosciences
■650 4▼aImmunology
■650 4▼aMental health
■650 4▼aObstetrics
■653 ▼aMaternal behavior
■653 ▼aPregnancy
■653 ▼aPostpartum
■653 ▼aMicroglia
■653 ▼aNeuroimmune alterations
■653 ▼aStress
■690 ▼a0317
■690 ▼a0982
■690 ▼a0347
■690 ▼a0380
■71020▼aThe Ohio State University▼bNeuroscience Graduate Studies Program.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359741▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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