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Articles 1 - 18 of 18
Full-Text Articles in Neuroscience and Neurobiology
The Neuroprotective Role Of Lipoxin A4 In Reinstating Blood Brain Barrier Integrity In Neuroinflammatory Disease Processes, Minjal Patel, Nimish Acharya
The Neuroprotective Role Of Lipoxin A4 In Reinstating Blood Brain Barrier Integrity In Neuroinflammatory Disease Processes, Minjal Patel, Nimish Acharya
Rowan-Virtua Research Day
Background: The blood-brain barrier (BBB), formed by the vascular endothelium, astrocytic foot processes, pericytes, is a highly selective barrier that is responsible for maintaining brain homeostasis and ultimately proper neuronal function. Disruption of the BBB, leading to increased BBB permeability, has been reported in several neurodegenerative diseases, including Alzheimer’s disease (AD) and traumatic brain injury (TBI).1 Loss of BBB integrity leads to the proliferation of pro-inflammatory cytokines, including TNFɑ, IL-1β, and IL-6.2 Moderate inflammation has a beneficial response in the system following an acute injury. However, prolonged inflammation has been known to perturb homeostasis and have …
Therapeutic Treatment With The Anti-Inflammatory Drug Candidate Mw151 May Partially Reduce Memory Impairment And Normalizes Hippocampal Metabolic Markers In A Mouse Model Of Comorbid Amyloid And Vascular Pathology, David J. Braun, David K. Powell, Christopher J. Mclouth, Saktimayee M. Roy, D. Martin Watterson, Linda J. Van Eldik
Therapeutic Treatment With The Anti-Inflammatory Drug Candidate Mw151 May Partially Reduce Memory Impairment And Normalizes Hippocampal Metabolic Markers In A Mouse Model Of Comorbid Amyloid And Vascular Pathology, David J. Braun, David K. Powell, Christopher J. Mclouth, Saktimayee M. Roy, D. Martin Watterson, Linda J. Van Eldik
Neuroscience Faculty Publications
Alzheimer's disease (AD) is the leading cause of dementia in the elderly, but therapeutic options are lacking. Despite long being able to effectively treat the ill-effects of pathology present in various rodent models of AD, translation of these strategies to the clinic has so far been disappointing. One potential contributor to this situation is the fact that the vast majority of AD patients have other dementia-contributing comorbid pathologies, the most common of which are vascular in nature. This situation is modeled relatively infrequently in basic AD research, and almost never in preclinical studies. As part of our efforts to develop …
Exploiting Modulation Of The Blood-Brain And Blood-Tumor Barrier Permeability By Translational Focused Ultrasound For Therapeutic Delivery To Cns Metastases, Tasneem A. Arsiwala
Exploiting Modulation Of The Blood-Brain And Blood-Tumor Barrier Permeability By Translational Focused Ultrasound For Therapeutic Delivery To Cns Metastases, Tasneem A. Arsiwala
Graduate Theses, Dissertations, and Problem Reports
Transcranial low-intensity focused ultrasound is a unique technology to modulate the integrity of tight endothelial junctions and transiently increase BBB/BTB permeability to enhance therapeutic delivery. Despite promising early studies, present literature lacks agreement on key experimental conditions, which restricts our knowledge and the technique's widespread translation. This dissertation first provides a critical review of the current gaps in knowledge regarding the universal use of LiFUS in preclinical and clinical use. We then identify key parameters for translational and predictable opening of the BBB using a 3T MRI coupled with a clinical device. Our investigation highlights that passive permeability of the …
Placenta-Expanded Stromal Cell Therapy In A Rodent Model Of Simulated Weightlessness, Amber M. Paul, Linda Rubinstein, Charles Houseman, Metadel Abegaz, Steffy Tabares Ruiz
Placenta-Expanded Stromal Cell Therapy In A Rodent Model Of Simulated Weightlessness, Amber M. Paul, Linda Rubinstein, Charles Houseman, Metadel Abegaz, Steffy Tabares Ruiz
Publications
Long duration spaceflight poses potential health risks to astronauts during flight and re-adaptation after return to Earth. There is an emerging need for NASA to provide successful and reliable therapeutics for long duration missions when capability for medical intervention will be limited. Clinically relevant, human placenta-derived therapeutic stromal cells (PLX-PAD) are a promising therapeutic alternative. We found that treatment of adult female mice with PLX-PAD near the onset of simulated weightlessness by hindlimb unloading (HU, 30 d) was well-tolerated and partially mitigated decrements caused by HU. Specifically, PLX-PAD treatment rescued HU-induced thymic atrophy, and mitigated HU-induced changes in percentages of …
Potential Involvement Of Micro Vesicle Particles In The Synergistic Effects Of Ultraviolet-B Radiation And Platelet -Activating Factor Receptor Agonists On Cytokine Production, Shweta Bhadri
Browse all Theses and Dissertations
Cytokines play a pivotal role in regulating inflammation, which is a condition that makes the tissue vulnerable to different pathological and physiological conditions. Thus, how cytokines are regulated is an important area of study. Skin that receives ultraviolet B radiation (UVB), a major pro-oxidative stressor, results in the release of multiple cytokines and chemokines like tumor necrosis factor (TNF)-alpha and interleukin (IL)-8. Previous studies from our group and others have demonstrated synergistic release of TNF-alpha when UVB is combined with IL-1 or the lipid mediator Platelet-activating factor (PAF). Of interest, subcellular microvesicle particles (MVP) have been proposed to play an …
Morphological Changes In Dorsal Root Ganglia Macrophages Associated With Neuropathic Pain Mechanisms Suggest A Novel Target For Chronic Pain Therapy, Emily Kussick
CMC Senior Theses
The present study examined morphological changes in the dorsal root ganglia (DRG) following an innate immune stimulus. The importance of the DRG has increasingly become recognized in pain processing as more than just the home of primary afferent cell bodies. All sensory information passes through the DRG via the primary afferents, and on to the spinal cord. The primary afferents synapse with second-order neurons in the spinal cord that ascend towards the brain, where they transmit the pain signal to the limbic forebrain and/or the somatosensory cortex for processing. The DRG is an interesting niche to study at as it …
Effects Of Alpha- And Beta-Adrenergic Receptor Blockade Upon Inflammatory Responses To Acute And Chronic Sleep Fragmentation, Nicholas David Wheeler
Effects Of Alpha- And Beta-Adrenergic Receptor Blockade Upon Inflammatory Responses To Acute And Chronic Sleep Fragmentation, Nicholas David Wheeler
Masters Theses & Specialist Projects
Generally, sleep is viewed as a recuperative process and its dysregulation has
cognitive, metabolic, immunological, and inflammatory implications that are largely deleterious to human health. Epidemiological and empirical studies have suggested that sleep fragmentation (SF) as result of obstructive sleep apnea (OSA) and other sleep abnormalities leads to pronounced systemic inflammatory responses, which are influenced by the sympathetic nervous system (SNS). However, the underlying molecular mechanisms contributing to SNS regulation of SF-induced inflammatory states are not fully understood. To assess the effects of the SNS system, C57BL/6j female mice were placed in automated SF chambers (12L:12D) and subjected to either …
Deletion Of P38Α Mapk In Microglia Blunts Trauma-Induced Inflammatory Responses In Mice, Josh M. Morganti, Danielle S. Goulding, Linda J. Van Eldik
Deletion Of P38Α Mapk In Microglia Blunts Trauma-Induced Inflammatory Responses In Mice, Josh M. Morganti, Danielle S. Goulding, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
Traumatic brain injury (TBI) is a significant cause of morbidity and mortality in the USA and other developed countries worldwide. Following the initial mechanical insult, the brain’s primary innate immune effector, microglia, initiate inflammatory signaling cascades and pathophysiological responses that can lead to chronic neuroinflammation and neurodegenerative sequelae. The p38α MAPK signaling pathway in microglia is a key contributor to inflammatory responses to diverse disease-relevant stressors and injury conditions. Therefore, we tested here whether microglia p38α contributes to acute and persistent inflammatory responses induced by a focal TBI. We generated conditional cell-specific knockout of p38α in microglia using a CX3CR1 …
Leukemia Inhibitory Factor Modulates The Peripheral Immune Response In A Rat Model Of Emergent Large Vessel Occlusion, Stephanie M. Davis, Lisa A. Collier, Edric D. Winford, Christopher C. Leonardo, Craig T. Ajmo Jr., Elspeth A. Foran, Timothy J. Kopper, John C. Gensel, Keith R. Pennypacker
Leukemia Inhibitory Factor Modulates The Peripheral Immune Response In A Rat Model Of Emergent Large Vessel Occlusion, Stephanie M. Davis, Lisa A. Collier, Edric D. Winford, Christopher C. Leonardo, Craig T. Ajmo Jr., Elspeth A. Foran, Timothy J. Kopper, John C. Gensel, Keith R. Pennypacker
Neurology Faculty Publications
Background: The migration of peripheral immune cells and splenocytes to the ischemic brain is one of the major causes of delayed neuroinflammation after permanent large vessel stroke. Other groups have demonstrated that leukemia inhibitory factor (LIF), a cytokine that promotes neural cell survival through upregulation of antioxidant enzymes, promotes an anti-inflammatory phenotype in several types of immune cells. The goal of this study was to determine whether LIF treatment modulates the peripheral immune response after stroke.
Methods: Young male (3 month) Sprague-Dawley rats underwent sham surgery or permanent middle cerebral artery occlusion (MCAO). Animals were administered LIF (125 μg/kg) or …
Regulation Of Lps-Induced Neuroinflammation By Targeting Microglia In Vivo Using Chemogenetics, William Chett Binning
Regulation Of Lps-Induced Neuroinflammation By Targeting Microglia In Vivo Using Chemogenetics, William Chett Binning
Electronic Thesis and Dissertation Repository
Peripheral inflammation can profoundly alter motivational processes and generate behavioral symptoms of sickness. Microglia, the innate immune cells of the brain, orchestrate neuroinflammation and have long been thought to be important for sickness behavior. However, their precise roles remain obscure due to their complex bidirectional interactions with neurons in vivo, which regulate how microglia respond to inflammatory signals and interact with neurons. Neuron-microglia interactions can be at least partially mediated by various types of G-protein coupled receptors (GPCRs) expressed by microglia. Here, we generated a microglia specific hM3Gq-DREADD (designer receptors exclusively activated by designer drugs) mouse line in which hM3Gq …
Minocycline Protects Developing Brain Against Ethanol-Induced Damage, Xin Wang, Kai Zhang, Fanmuyi Yang, Zhenhua Ren, Mei Xu, Jacqueline A. Frank, Zun-Ji Ke, Jia Luo
Minocycline Protects Developing Brain Against Ethanol-Induced Damage, Xin Wang, Kai Zhang, Fanmuyi Yang, Zhenhua Ren, Mei Xu, Jacqueline A. Frank, Zun-Ji Ke, Jia Luo
Pharmacology and Nutritional Sciences Faculty Publications
Fetal alcohol spectrum disorders (FASD) are caused by ethanol exposure during the pregnancy and is the leading cause of mental retardation. Ethanol exposure during the development results in the loss of neurons in the developing brain, which may underlie many neurobehavioral deficits associated with FASD. It is important to understand the mechanisms underlying ethanol-induced neuronal loss and develop appropriate therapeutic strategies. One of the potential mechanisms involves neuroimmune activation. Using a third trimester equivalent mouse model of ethanol exposure, we demonstrated that ethanol induced a wide-spread neuroapoptosis, microglial activation, and neuroinflammation in C57BL/6 mice. Minocycline is an antibiotic that inhibits …
Modulation Of Cytokine Signaling In Optic Nerve Regeneration In Xenopus Laevis, Rupa Priscilla Choudhary
Modulation Of Cytokine Signaling In Optic Nerve Regeneration In Xenopus Laevis, Rupa Priscilla Choudhary
Legacy Theses & Dissertations (2009 - 2024)
The axons of the optic nerve, like other central nervous system (CNS) axons, tend to lose their capacity to regenerate following an injury in adult amniotes, but these axons are able to regenerate throughout life in anamniotes. In mammals, optic axon regeneration is promoted by inhibiting the increased expression in retinal ganglion cells of a cytokine signaling molecule, Suppressor of Cytokine Signaling 3 (SOCS3), that accompanies injury. In animals capable of regeneration, SOCS3 mRNA expression also increases dramatically in retinal ganglion cells after optic nerve injury, but somehow this increase is insufficient to block regeneration. To gain insights into how …
Estradiol Enhances Inflammation During Pubertal Development In Female Mice, Amarylis Velez-Perez
Estradiol Enhances Inflammation During Pubertal Development In Female Mice, Amarylis Velez-Perez
Doctoral Dissertations
There is a dynamic interaction between the immune, endocrine, and central nervous systems. The main function of the immune system is to protect the organism from pathogens by engaging a network of organs, cells and signaling molecules. Recently, the resident-immune cells of the brain have been found to be critical in supporting the full development of neural circuits during sensitive periods of development. However, over-activation of the immune system during this period can alter the typical trajectory of maturing neural circuits. LPS (lipopolysaccharide) administration decreases hormone-induced adult sexual behavior in mice when administered during puberty, but not when it is …
Peripheral Administration Of The Soluble Tnf Inhibitor Xpro1595 Modifies Brain Immune Cell Profiles, Decreases Beta-Amyloid Plaque Load, And Rescues Impaired Long-Term Potentiation In 5xfad Mice, Kathryn P. Macpherson, Pradoldej Sompol, George T. Kannarkat, Jianjun Chang, Lindsey Sniffen, Mary E. Wildner, Christopher M. Norris, Malú G. Tansey
Peripheral Administration Of The Soluble Tnf Inhibitor Xpro1595 Modifies Brain Immune Cell Profiles, Decreases Beta-Amyloid Plaque Load, And Rescues Impaired Long-Term Potentiation In 5xfad Mice, Kathryn P. Macpherson, Pradoldej Sompol, George T. Kannarkat, Jianjun Chang, Lindsey Sniffen, Mary E. Wildner, Christopher M. Norris, Malú G. Tansey
Sanders-Brown Center on Aging Faculty Publications
Clinical and animal model studies have implicated inflammation and peripheral immune cell responses in the pathophysiology of Alzheimer’s disease (AD). Peripheral immune cells including T cells circulate in the cerebrospinal fluid (CSF) of healthy adults and are found in the brains of AD patients and AD rodent models. Blocking entry of peripheral macrophages into the CNS was reported to increase amyloid burden in an AD mouse model. To assess inflammation in the 5xFAD (Tg) mouse model, we first quantified central and immune cell profiles in the deep cervical lymph nodes and spleen. In the brains of Tg mice, activated (MHCII …
Retention Of Normal Glia Function By An Isoform-Selective Protein Kinase Inhibitor Drug Candidate That Modulates Cytokine Production And Cognitive Outcomes, Zhengqiu Zhou, Adam D. Bachstetter, Claudia B. Späni, Saktimayee M. Roy, D. Martin Watterson, Linda J. Van Eldik
Retention Of Normal Glia Function By An Isoform-Selective Protein Kinase Inhibitor Drug Candidate That Modulates Cytokine Production And Cognitive Outcomes, Zhengqiu Zhou, Adam D. Bachstetter, Claudia B. Späni, Saktimayee M. Roy, D. Martin Watterson, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
Background: Brain p38α mitogen-activated protein kinase (MAPK), a potential therapeutic target for cognitive dysfunction based on the neuroinflammation-synaptic dysfunction cycle of pathophysiology progression, offers an innovative pharmacological strategy via inhibiting the same activated target in both glia and neurons, thereby enhancing the possibility for efficacy. The highly selective, brain-penetrant p38αMAPK inhibitor MW150 attenuates cognitive dysfunction in two distinct Alzheimer's disease (AD)-relevant models and avoids the problems encountered with previous mixed-kinase inhibitor drug candidates. Therefore, it is essential that the glial effects of this CNS-active kinase inhibitor be addressed in order to anticipate future use in clinical investigations.
Methods: …
Neutralizing Anti-Interleukin-1Β Antibodies Reduce Ischemia-Related Interleukin-1Β Transport Across The Blood-Brain Barrier In Fetal Sheep, Aparna Patra, Xiaodi Chen, Grazyna B. Sadowska, Jiyong Zhang, Yow-Pin Lim, James F. Padbury, William A. Banks, Barbara S. Stonestreet
Neutralizing Anti-Interleukin-1Β Antibodies Reduce Ischemia-Related Interleukin-1Β Transport Across The Blood-Brain Barrier In Fetal Sheep, Aparna Patra, Xiaodi Chen, Grazyna B. Sadowska, Jiyong Zhang, Yow-Pin Lim, James F. Padbury, William A. Banks, Barbara S. Stonestreet
Pediatrics Faculty Publications
Hypoxic ischemic insults predispose to perinatal brain injury. Pro-inflammatory cytokines are important in the evolution of this injury. Interleukin-1β (IL-1β) is a key mediator of inflammatory responses and elevated IL-1β levels in brain correlate with adverse neurodevelopmental outcomes after brain injury. Impaired blood-brain barrier (BBB) function represents an important component of hypoxic-ischemic brain injury in the fetus. In addition, ischemia-reperfusion increases cytokine transport across the BBB of the ovine fetus. Reducing pro-inflammatory cytokine entry into brain could represent a novel approach to attenuate ischemia-related brain injury. We hypothesized that infusions of neutralizing IL-1β monoclonal antibody (mAb) reduce IL-1β transport across …
Adenosine Deaminase Enhances The Immunogenicity Of Human Dendritic Cells From Healthy And Hiv-Infected Individuals, Víctor Casanova, Isaac Isaac Naval-Macabuhay, Marta Massanella, Marta Rodríguez-García
Adenosine Deaminase Enhances The Immunogenicity Of Human Dendritic Cells From Healthy And Hiv-Infected Individuals, Víctor Casanova, Isaac Isaac Naval-Macabuhay, Marta Massanella, Marta Rodríguez-García
Dartmouth Scholarship
ADA is an enzyme implicated in purine metabolism, and is critical to ensure normal immune function. Its congenital deficit leads to severe combined immunodeficiency (SCID). ADA binding to adenosine receptors on dendritic cell surface enables T-cell costimulation through CD26 crosslinking, which enhances T-cell activation and proliferation. Despite a large body of work on the actions of the ecto-enzyme ADA on T-cell activation, questions arise on whether ADA can also modulate dendritic cell maturation. To this end we investigated the effects of ADA on human monocyte derived dendritic cell biology. Our results show that both the enzymatic and non-enzymatic activities of …
Early Stage Drug Treatment That Normalizes Proinflammatory Cytokine Production Attenuates Synaptic Dysfunction In A Mouse Model That Exhibits Age-Dependent Progression Of Alzheimer's Disease-Related Pathology, Adam D. Bachstetter, Christopher M. Norris, Pradoldej Sompol, Donna M. Wilcock, Danielle Goulding, Janna H. Neltner, Daret St. Clair, D. Martin Watterson, Linda J. Van Eldik
Early Stage Drug Treatment That Normalizes Proinflammatory Cytokine Production Attenuates Synaptic Dysfunction In A Mouse Model That Exhibits Age-Dependent Progression Of Alzheimer's Disease-Related Pathology, Adam D. Bachstetter, Christopher M. Norris, Pradoldej Sompol, Donna M. Wilcock, Danielle Goulding, Janna H. Neltner, Daret St. Clair, D. Martin Watterson, Linda J. Van Eldik
Sanders-Brown Center on Aging Faculty Publications
Overproduction of proinflammatory cytokines in the CNS has been implicated as a key contributor to pathophysiology progression in Alzheimer's disease (AD), and extensive studies with animal models have shown that selective suppression of excessive glial proinflammatory cytokines can improve neurologic outcomes. The prior art, therefore, raises the logical postulation that intervention with drugs targeting dysregulated glial proinflammatory cytokine production might be effective disease-modifying therapeutics if used in the appropriate biological time window. To test the hypothesis that early stage intervention with such drugs might be therapeutically beneficial, we examined the impact of intervention with MW01-2-151SRM (MW-151), an experimental therapeutic that …