1
|
Smith AM, Grayson BE. A strike to the head: Parallels between the pediatric and adult human and the rodent in traumatic brain injury. J Neurosci Res 2024; 102:e25364. [PMID: 38953607 DOI: 10.1002/jnr.25364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 06/05/2024] [Accepted: 06/16/2024] [Indexed: 07/04/2024]
Abstract
Traumatic brain injury (TBI) is a condition that occurs commonly in children from infancy through adolescence and is a global health concern. Pediatric TBI presents with a bimodal age distribution, with very young children (0-4 years) and adolescents (15-19 years) more commonly injured. Because children's brains are still developing, there is increased vulnerability to the effects of head trauma, which results in entirely different patterns of injury than in adults. Pediatric TBI has a profound and lasting impact on a child's development and quality of life, resulting in long-lasting consequences to physical, cognitive, and emotional development. Chronic issues like learning disabilities, behavioral problems, and emotional disturbances can develop. Early intervention and ongoing support are critical for minimizing these long-term deficits. Many animal models of TBI exist, and each varies significantly, displaying different characteristics of clinical TBI. The neurodevelopment differs in the rodent from the human in timing and effect, so TBI outcomes in the juvenile rodent can thus vary from the human child. The current review compares findings from preclinical TBI work in juvenile and adult rodents to clinical TBI research in pediatric and adult humans. We focus on the four brain regions most affected by TBI: the prefrontal cortex, corpus callosum, hippocampus, and hypothalamus. Each has its unique developmental projections and thus is impacted by TBI differently. This review aims to compare the healthy neurodevelopment of these four brain regions in humans to the developmental processes in rodents.
Collapse
Affiliation(s)
- Allie M Smith
- Department of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Bernadette E Grayson
- Department of Neurology, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Population Health Science, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Anesthesiology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| |
Collapse
|
2
|
Houle S, Tapp Z, Dobres S, Ahsan S, Reyes Y, Cotter C, Mitsch J, Zimomra Z, Peng J, Rowe RK, Lifshitz J, Sheridan J, Godbout J, Kokiko-Cochran ON. Sleep fragmentation after traumatic brain injury impairs behavior and conveys long-lasting impacts on neuroinflammation. Brain Behav Immun Health 2024; 38:100797. [PMID: 38803369 PMCID: PMC11128763 DOI: 10.1016/j.bbih.2024.100797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 05/12/2024] [Indexed: 05/29/2024] Open
Abstract
Traumatic brain injury (TBI) causes a prolonged inflammatory response in the central nervous system (CNS) driven by microglia. Microglial reactivity is exacerbated by stress, which often provokes sleep disturbances. We have previously shown that sleep fragmentation (SF) stress after experimental TBI increases microglial reactivity and impairs hippocampal function 30 days post-injury (DPI). The neuroimmune response is highly dynamic the first few weeks after TBI, which is also when injury induced sleep-wake deficits are detected. Therefore, we hypothesized that even a few weeks of TBI SF stress would synergize with injury induced sleep-wake deficits to promote neuroinflammation and impair outcome. Here, we investigated the effects of environmental SF in a lateral fluid percussion model of mouse TBI. Half of the mice were undisturbed, and half were exposed to 5 h of SF around the onset of the light cycle, daily, for 14 days. All mice were then undisturbed 15-30 DPI, providing a period for SF stress recovery (SF-R). Mice exposed to SF stress slept more than those in control housing 7-14 DPI and engaged in more total daily sleep bouts during the dark period. However, SF stress did not exacerbate post-TBI sleep deficits. Testing in the Morris water maze revealed sex dependent differences in spatial reference memory 9-14 DPI with males performing worse than females. Post-TBI SF stress suppressed neurogenesis-related gene expression and increased inflammatory signaling in the cortex at 14 DPI. No differences in sleep behavior were detected between groups during the SF stress recovery period 15-30 DPI. Microscopy revealed cortical and hippocampal IBA1 and CD68 percent-area increased in TBI SF-R mice 30 DPI. Additionally, neuroinflammatory gene expression was increased, and synaptogenesis-related gene expression was suppressed in TBI-SF mice 30 DPI. Finally, IPA canonical pathway analysis showed post-TBI SF impaired and delayed activation of synapse-related pathways between 14 and 30 DPI. These data show that transient SF stress after TBI impairs recovery and conveys long-lasting impacts on neuroimmune function independent of continuous sleep deficits. Together, these finding support that even limited exposure to post-TBI SF stress can have lasting impacts on cognitive recovery and regulation of the immune response to trauma.
Collapse
Affiliation(s)
- Samuel Houle
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Zoe Tapp
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
- Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, 460 Medical Center Drive, 43210, Columbus, OH, USA
| | - Shannon Dobres
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Sakeef Ahsan
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Yvanna Reyes
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Christopher Cotter
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Jessica Mitsch
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
| | - Zachary Zimomra
- Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, 460 Medical Center Drive, 43210, Columbus, OH, USA
| | - Juan Peng
- Center for Biostatistics, The Ohio State University, 320-55 Lincoln Tower, 1800 Cannon Drive, 43210, Columbus, OH, USA
| | - Rachel K. Rowe
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA
| | - Jonathan Lifshitz
- Phoenix VA Health Care System and University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - John Sheridan
- Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, 460 Medical Center Drive, 43210, Columbus, OH, USA
- Division of Biosciences, College of Dentistry, The Ohio State University, 305 W. 12th Ave, 43210, Columbus, OH, USA
| | - Jonathan Godbout
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
- Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, 460 Medical Center Drive, 43210, Columbus, OH, USA
- Chronic Brain Injury Program, The Ohio State University, 190 North Oval Mall, 43210, Columbus, OH, USA
| | - Olga N. Kokiko-Cochran
- Dept. of Neuroscience, College of Medicine, The Ohio State University, 1858 Neil Ave, 43210, Columbus, OH, USA
- Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, 460 Medical Center Drive, 43210, Columbus, OH, USA
- Chronic Brain Injury Program, The Ohio State University, 190 North Oval Mall, 43210, Columbus, OH, USA
| |
Collapse
|
3
|
Panayi N, Schulz P, He P, Hanna B, Lifshitz J, Rowe RK, Sierks MR. Traumatic Brain Injury in Mice Generates Early-Stage Alzheimer's Disease Related Protein Pathology that Correlates with Neurobehavioral Deficits. Mol Neurobiol 2024:10.1007/s12035-024-04035-5. [PMID: 38411868 DOI: 10.1007/s12035-024-04035-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/09/2024] [Indexed: 02/28/2024]
Abstract
Traumatic brain injury (TBI) increases the long-term risk of neurodegenerative diseases, including Alzheimer's disease (AD). Here, we demonstrate that protein variant pathology generated in brain tissue of an experimental TBI mouse model is similar to protein variant pathology observed during early stages of AD, and that subacute accumulation of AD associated variants of amyloid beta (Aβ) and tau in the TBI mouse model correlated with behavioral deficits. Male C57BL/6 mice were subjected to midline fluid percussion injury or to sham injury, after which sensorimotor function (rotarod, neurological severity score), cognitive deficit (novel object recognition), and affective deficits (elevated plus maze, forced swim task) were assessed post-injury (DPI). Protein pathology at 7, 14, and 28 DPI was measured in multiple brain regions using an immunostain panel of reagents selectively targeting different neurodegenerative disease-related variants of Aβ, tau, TDP-43, and alpha-synuclein. Overall, TBI resulted in sensorimotor deficits and accumulation of AD-related protein variant pathology near the impact site, both of which returned to sham levels by 14 DPI. Individual mice, however, showed persistent behavioral deficits and/or accumulation of toxic protein variants at 28 DPI. Behavioral outcomes of each mouse were correlated with levels of seven different protein variants in ten brain regions at specific DPI. Out of 21 significant correlations between protein variant levels and behavioral deficits, 18 were with variants of Aβ or tau. Correlations at 28 DPI were all between a single Aβ or tau variant, both of which are strongly associated with human AD cases. These data provide a direct mechanistic link between protein pathology resulting from TBI and the hallmarks of AD.
Collapse
Affiliation(s)
- Nicholas Panayi
- Chemical Engineering, The School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287-6106, USA
| | - Philip Schulz
- Chemical Engineering, The School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287-6106, USA
| | - Ping He
- Chemical Engineering, The School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287-6106, USA
| | - Brandon Hanna
- Chemical Engineering, The School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287-6106, USA
| | - Jonathan Lifshitz
- Department of Psychiatry, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ, USA
| | - Rachel K Rowe
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA
| | - Michael R Sierks
- Chemical Engineering, The School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, 85287-6106, USA.
| |
Collapse
|
4
|
Green TRF, Carey SD, Mannino G, Craig JA, Rowe RK, Zielinski MR. Sleep, inflammation, and hemodynamics in rodent models of traumatic brain injury. Front Neurosci 2024; 18:1361014. [PMID: 38426017 PMCID: PMC10903352 DOI: 10.3389/fnins.2024.1361014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 01/29/2024] [Indexed: 03/02/2024] Open
Abstract
Traumatic brain injury (TBI) can induce dysregulation of sleep. Sleep disturbances include hypersomnia and hyposomnia, sleep fragmentation, difficulty falling asleep, and altered electroencephalograms. TBI results in inflammation and altered hemodynamics, such as changes in blood brain barrier permeability and cerebral blood flow. Both inflammation and altered hemodynamics, which are known sleep regulators, contribute to sleep impairments post-TBI. TBIs are heterogenous in cause and biomechanics, which leads to different molecular and symptomatic outcomes. Animal models of TBI have been developed to model the heterogeneity of TBIs observed in the clinic. This review discusses the intricate relationship between sleep, inflammation, and hemodynamics in pre-clinical rodent models of TBI.
Collapse
Affiliation(s)
- Tabitha R. F. Green
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, United States
| | - Sean D. Carey
- Veterans Affairs (VA) Boston Healthcare System, West Roxbury, MA, United States
- Department of Psychiatry, Harvard Medical School, West Roxbury, MA, United States
| | - Grant Mannino
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, United States
| | - John A. Craig
- Veterans Affairs (VA) Boston Healthcare System, West Roxbury, MA, United States
| | - Rachel K. Rowe
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, United States
| | - Mark R. Zielinski
- Veterans Affairs (VA) Boston Healthcare System, West Roxbury, MA, United States
- Department of Psychiatry, Harvard Medical School, West Roxbury, MA, United States
| |
Collapse
|
5
|
Morris AR, Gudenschwager Basso EK, Gutierrez-Monreal MA, Arja RD, Kobeissy FH, Janus CG, Wang KK, Zhu J, Liu AC. Lifelong Chronic Sleep Disruption in a Mouse Model of Traumatic Brain Injury. Neurotrauma Rep 2024; 5:61-73. [PMID: 38288298 PMCID: PMC10823169 DOI: 10.1089/neur.2023.0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024] Open
Abstract
Chronic sleep/wake disturbances (SWDs) are strongly associated with traumatic brain injury (TBI) in patients and are being increasingly recognized. However, the underlying mechanisms are largely understudied and there is an urgent need for animal models of lifelong SWDs. The objective of this study was to develop a chronic TBI rodent model and investigate the lifelong chronic effect of TBI on sleep/wake behavior. We performed repetitive midline fluid percussion injury (rmFPI) in 4-month-old mice and monitored their sleep/wake behavior using the non-invasive PiezoSleep system. Sleep/wake states were recorded before injury (baseline) and then monthly thereafter. We found that TBI mice displayed a significant decrease in sleep duration in both the light and dark phases, beginning at 3 months post-TBI and continuing throughout the study. Consistent with the sleep phenotype, these TBI mice showed circadian locomotor activity phenotypes and exhibited reduced anxiety-like behavior. TBI mice also gained less weight, and had less lean mass and total body water content, compared to sham controls. Further, TBI mice showed extensive brain tissue loss and increased glial fibrillary acidic protein and ionized calcium-binding adaptor molecule 1 levels in the hypothalamus and vicinity of the injury, indicative of chronic neuropathology. In summary, our study identified a critical time window of TBI pathology and associated circadian and sleep/wake phenotypes. Future studies should leverage this mouse model to investigate the molecular mechanisms underlying the chronic sleep/wake phenotypes post-TBI early in life.
Collapse
Affiliation(s)
- Andrew R. Morris
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Erwin K. Gudenschwager Basso
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Miguel A. Gutierrez-Monreal
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Rawad Daniel Arja
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Firas H. Kobeissy
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Christopher G. Janus
- Center for Translational Research in Neurodegenerative Disease (CTRND), Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| | - Kevin K.W. Wang
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Jiepei Zhu
- Center for Neurotrauma, Multiomics & Biomarkers, Department of Neurobiology and Neuroscience Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Andrew C. Liu
- Department of Physiology and Aging, Department of Neuroscience, University of Florida College of Medicine, Gainesville, Florida, USA
| |
Collapse
|
6
|
Morris AR, Gudenschwager Basso EK, Gutierrez-Monreal MA, Arja RD, Kobeissy FH, Janus CG, Wang KKW, Zhu J, Liu AC. Sleep Disruption in a Mouse Model of Chronic Traumatic Brain Injury. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.10.566553. [PMID: 38014315 PMCID: PMC10680804 DOI: 10.1101/2023.11.10.566553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Chronic sleep/wake disturbances are strongly associated with traumatic brain injury (TBI) in patients and are being increasingly recognized. However, the underlying mechanisms are largely understudied and there is an urgent need for animal models of lifelong sleep/wake disturbances. The objective of this study was to develop a chronic TBI rodent model and investigate the lifelong chronic effect of TBI on sleep/wake behavior. We performed repetitive midline fluid percussion injury (rmFPI) in four months old mice and monitored their sleep/wake behavior using the non-invasive PiezoSleep system. The sleep/wake states were recorded before injury (baseline) and then monthly thereafter. We found that TBI mice displayed a significant decrease in sleep duration in both the light and dark phases, beginning at three months post-TBI and continuing throughout the study. Consistent with the sleep phenotype, these TBI mice showed circadian locomotor activity phenotypes and exhibited reduced anxiety-like behavior. TBI mice also gained less weight, and had less lean mass and total body water content, compared to sham controls. Furthermore, TBI mice showed extensive brain tissue loss and increased GFAP and IBA1 levels in the hypothalamus and the vicinity of the injury, indicative of chronic neuropathology. In summary, our study identified a critical time window of TBI pathology and associated circadian and sleep/wake phenotypes. Future studies should leverage this mouse model to investigate the molecular mechanisms underlying the chronic sleep/wake phenotypes following TBI early in life.
Collapse
|
7
|
Panayi N, Schulz P, He P, Hanna B, Lifshitz J, Rowe R, Sierks MR. Traumatic brain injury in mice generates early-stage Alzheimer's disease related protein pathology that correlates with neurobehavioral deficits. RESEARCH SQUARE 2023:rs.3.rs-2865501. [PMID: 37205508 PMCID: PMC10187431 DOI: 10.21203/rs.3.rs-2865501/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Traumatic brain injury (TBI) increases the long-term risk of neurodegenerative diseases, including Alzheimer's disease (AD). Here, we demonstrate that protein variant pathology generated in brain tissue of an experimental TBI mouse model is similar to protein variant pathology observed in human ADbrains, and that subacute accumulation of two AD associated variants of amyloid beta (Aβ) and tau in the TBI mouse model correlated with behavioral deficits. Male C57BL/6 mice were subjected to midline fluid percussion injury or to sham injury, after which sensorimotor function (rotarod, neurological severity score), cognitive deficit (novel object recognition), and affective deficits (elevated plus maze, forced swim task) were assessed at different days post-injury (DPI). Protein pathology at 7, 14, and 28 DPI was measured in multiple brain regions using an immunostain panel of reagents selectively targeting different neurodegenerative disease-related variants of Aβ, tau, TDP-43, and alpha-synuclein. Overall, TBI resulted in sensorimotor deficits and accumulation of AD-related protein variant pathology near the impact site, both of which returned to sham levels by 14 DPI. Individual mice, however, showed persistent behavioral deficits and/or accumulation of selected toxic protein variants at 28 DPI. Behavioral outcomes of each mouse were correlated with levels of seven different protein variants in ten brain regions at specific DPI. Out of 21 significant correlations between protein variant levels and behavioral deficits, 18 were with variants of Aβ or tau. Correlations at 28 DPI were all between a single Aβ or tau variant, both of which are strongly associated with human AD cases. These data provide a direct mechanistic link between protein pathology resulting from TBI and the hallmarks of AD.
Collapse
Affiliation(s)
| | | | | | | | - Jonathan Lifshitz
- University of Arizona College of Pharmacy: The University of Arizona College of Medicine Phoenix
| | - Rachel Rowe
- University of Colorado at Boulder: University of Colorado Boulder
| | | |
Collapse
|
8
|
Giordano KR, Saber M, Green TR, Rojas-Valencia LM, Ortiz JB, Murphy SM, Lifshitz J, Rowe RK. Colony-Stimulating Factor-1 Receptor Inhibition Transiently Attenuated the Peripheral Immune Response to Experimental Traumatic Brain Injury. Neurotrauma Rep 2023; 4:284-296. [PMID: 37139183 PMCID: PMC10150725 DOI: 10.1089/neur.2022.0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
To investigate microglial mechanisms in central and peripheral inflammation after experimental traumatic brain injury (TBI), we inhibited the colony-stimulating factor-1 receptor (CSF-1R) with PLX5622 (PLX). We hypothesized that microglia depletion would attenuate central inflammation acutely with no effect on peripheral inflammation. After randomization, male mice (n = 105) were fed PLX or control diets (21 days) and then received midline fluid percussion injury or sham injury. Brain and blood were collected at 1, 3, or 7 days post-injury (DPI). Immune cell populations were quantified in the brain and blood by flow cytometry. Cytokines (interleukin [IL]-6, IL-1β, tumor necrosis factor-α, interferon-γ, IL-17A, and IL-10) were quantified in the blood using a multi-plex enzyme-linked immunosorbent assay. Data were analyzed using Bayesian multi-variate, multi-level models. PLX depleted microglia at all time points and reduced neutrophils in the brain at 7 DPI. PLX also depleted CD115+ monocytes, reduced myeloid cells, neutrophils, and Ly6Clow monocytes in blood, and elevated IL-6. TBI induced a central and peripheral immune response. TBI elevated leukocytes, microglia, and macrophages in the brain and elevated peripheral myeloid cells, neutrophils, Ly6Cint monocytes, and IL-1β in the blood. TBI lowered peripheral CD115+ and Ly6Clow monocytes in the blood. TBI PLX mice had fewer leukocytes and microglia in the brain at 1 DPI, with elevated neutrophils at 7 DPI compared to TBI mice on a control diet. TBI PLX mice also had fewer peripheral myeloid cells, CD115+, and Ly6Clow monocytes in the blood at 3 DPI, but elevated Ly6Chigh, Ly6Cint, and CD115+ monocyte populations at 7 DPI, compared to TBI mice on a control diet. TBI PLX mice had elevated proinflammatory cytokines and lower anti-inflammatory cytokines in the blood at 7 DPI compared to TBI mice on a control diet. CSF-1R inhibition reduced the immune response to TBI at 1 and 3 DPI, but elevated peripheral inflammation at 7 DPI.
Collapse
Affiliation(s)
- Katherine R. Giordano
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| | - Maha Saber
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
| | - Tabitha R.F. Green
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado, USA
| | - Luisa M. Rojas-Valencia
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| | - J. Bryce Ortiz
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| | - Sean M. Murphy
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona, USA
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| | - Rachel K. Rowe
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado, USA
| |
Collapse
|
9
|
Duhart JM, Inami S, Koh K. Many faces of sleep regulation: beyond the time of day and prior wake time. FEBS J 2023; 290:931-950. [PMID: 34908236 PMCID: PMC9198110 DOI: 10.1111/febs.16320] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 12/07/2021] [Accepted: 12/14/2021] [Indexed: 12/19/2022]
Abstract
The two-process model of sleep regulation posits two main processes regulating sleep: the circadian process controlled by the circadian clock and the homeostatic process that depends on the history of sleep and wakefulness. The model has provided a dominant conceptual framework for sleep research since its publication ~ 40 years ago. The time of day and prior wake time are the primary factors affecting the circadian and homeostatic processes, respectively. However, it is critical to consider other factors influencing sleep. Since sleep is incompatible with other behaviors, it is affected by the need for essential behaviors such as eating, foraging, mating, caring for offspring, and avoiding predators. Sleep is also affected by sensory inputs, sickness, increased need for memory consolidation after learning, and other factors. Here, we review multiple factors influencing sleep and discuss recent insights into the mechanisms balancing competing needs.
Collapse
Affiliation(s)
- José Manuel Duhart
- Department of Neuroscience, Farber Institute for Neurosciences, Thomas Jefferson University, Philadelphia PA
- These authors contributed equally
- Present address: Fundación Instituto Leloir, Instituto de Investigaciones Bioquímicas de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Sho Inami
- Department of Neuroscience, Farber Institute for Neurosciences, Thomas Jefferson University, Philadelphia PA
- These authors contributed equally
| | - Kyunghee Koh
- Department of Neuroscience, Farber Institute for Neurosciences, Thomas Jefferson University, Philadelphia PA
| |
Collapse
|
10
|
Bibineyshvili Y, Schiff ND, Calderon DP. Dexmedetomidine-mediated sleep phase modulation ameliorates motor and cognitive performance in a chronic blast-injured mouse model. Front Neurol 2022; 13:1040975. [DOI: 10.3389/fneur.2022.1040975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple studies have shown that blast injury is followed by sleep disruption linked to functional sequelae. It is well established that improving sleep ameliorates such functional deficits. However, little is known about longitudinal brain activity changes after blast injury. In addition, the effects of directly modulating the sleep/wake cycle on learning task performance after blast injury remain unclear. We hypothesized that modulation of the sleep phase cycle in our injured mice would improve post-injury task performance. Here, we have demonstrated that excessive sleep electroencephalographic (EEG) patterns are accompanied by prominent motor and cognitive impairment during acute stage after secondary blast injury (SBI) in a mouse model. Over time we observed a transition to more moderate and prolonged sleep/wake cycle disturbances, including changes in theta and alpha power. However, persistent disruptions of the non-rapid eye movement (NREM) spindle amplitude and intra-spindle frequency were associated with lasting motor and cognitive deficits. We, therefore, modulated the sleep phase of injured mice using subcutaneous (SC) dexmedetomidine (Dex), a common, clinically used sedative. Dex acutely improved intra-spindle frequency, theta and alpha power, and motor task execution in chronically injured mice. Moreover, dexmedetomidine ameliorated cognitive deficits a week after injection. Our results suggest that SC Dex might potentially improve impaired motor and cognitive behavior during daily tasks in patients that are chronically impaired by blast-induced injuries.
Collapse
|
11
|
Sanchez E, Blais H, Duclos C, Arbour C, Van Der Maren S, El-Khatib H, Baril AA, Bernard F, Carrier J, Gosselin N. Sleep from acute to chronic traumatic brain injury and cognitive outcomes. Sleep 2022; 45:zsac123. [PMID: 35640250 PMCID: PMC9366647 DOI: 10.1093/sleep/zsac123] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 05/13/2022] [Indexed: 09/29/2023] Open
Abstract
STUDY OBJECTIVES Traumatic brain injuries (TBIs) cause persistent cerebral damage and cognitive deficits. Because sleep may be a critical factor for brain recovery, we characterized the sleep of patients with TBI from early hospitalization to years post-injury and explored the hypothesis that better sleep during hospitalization predicts more favorable long-term cognitive outcomes. METHODS We tested patients with moderate-to-severe TBI in the hospitalized (n = 11) and chronic (n = 43) stages using full-night polysomnography, with 82% of the hospitalized group being retested years post-injury. Hospitalized patients with severe orthopedic and/or spinal cord injury (n = 14) and healthy participants (n = 36) were tested as controls for the hospitalized and chronic TBI groups, respectively. Groups had similar age and sex and were compared for sleep characteristics, including slow waves and spindles. For patients with TBI, associations between sleep during hospitalization and long-term memory and executive function were assessed. RESULTS Hospitalized patients with TBI or orthopedic injuries had lower sleep efficiency, higher wake after sleep onset, and lower spindle density than the chronic TBI and healthy control groups, but only hospitalized patients with brain injury had an increased proportion of slow-wave sleep. During hospitalization for TBI, less fragmented sleep, more slow-wave sleep, and higher spindle density were associated to more favorable cognitive outcomes years post-injury, while injury severity markers were not associated with these outcomes. CONCLUSION These findings highlight the importance of sleep following TBI, as it could be a strong predictor of neurological recovery, either as a promoter or an early marker of cognitive outcomes.
Collapse
Affiliation(s)
- Erlan Sanchez
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Neuroscience, Université de Montréal, Montreal, Quebec, Canada
| | - Hélène Blais
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
| | - Catherine Duclos
- Montreal General Hospital, McGill University Health Centre, Montreal, Quebec, Canada
- School of Physical and Occupational Therapy, McGill University, Montreal, Quebec, Canada
| | - Caroline Arbour
- Centre Intégré de Traumatologie, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Faculty of Nursing, Université de Montréal, Montreal, Quebec, Canada
| | - Solenne Van Der Maren
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Psychology, Université de Montréal, Montreal, Quebec, Canada
| | - Héjar El-Khatib
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Psychology, Université de Montréal, Montreal, Quebec, Canada
| | - Andrée-Ann Baril
- Douglas Mental Health University Institute, Montréal, Quebec, Canada
- Department of Psychiatry, McGill University, Montréal, Quebec, Canada
| | - Francis Bernard
- Centre Intégré de Traumatologie, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Julie Carrier
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Psychology, Université de Montréal, Montreal, Quebec, Canada
| | - Nadia Gosselin
- Center for Advanced Research in Sleep Medicine, Centre Intégré Universitaire de Santé et Services Sociaux du Nord de l’Île-de-Montréal, Montreal, Quebec, Canada
- Department of Psychology, Université de Montréal, Montreal, Quebec, Canada
| |
Collapse
|
12
|
The Effect of Traumatic Brain Injury on Sleep Architecture and Circadian Rhythms in Mice—A Comparison of High-Frequency Head Impact and Controlled Cortical Injury. BIOLOGY 2022; 11:biology11071031. [PMID: 36101412 PMCID: PMC9312487 DOI: 10.3390/biology11071031] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/02/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022]
Abstract
Simple Summary Traumatic brain injury (TBI) is a significant risk factor for the development of sleep and circadian rhythm impairments. In order to understand if TBI models with different injury mechanism, severity and pathology have different sleep and circadian rhythm disruptions, we performed a detailed sleep and circadian analysis of the high-frequency head impact TBI model (a mouse model that mimics sports-related head impacts) and the controlled cortical impact TBI model (a mouse model that mimics severe brain trauma). We found that both TBI models disrupt the ability of brain cells to maintain circadian rhythms; however, both injury groups could still maintain circadian behavior patterns. Both the mild head impact model and the severe brain injury model had normal amount of sleep at 7 d after injury; however, the severe brain injury mice had disrupted brain wave patterns during sleep. We conclude that different types of TBI have different patterns of sleep disruptions. Abstract Traumatic brain injury (TBI) is a significant risk factor for the development of sleep and circadian rhythm impairments. In this study we compare the circadian rhythms and sleep patterns in the high-frequency head impact (HFHI) and controlled cortical impact (CCI) mouse models of TBI. These mouse models have different injury mechanisms key differences of pathology in brain regions controlling circadian rhythms and EEG wave generation. We found that both HFHI and CCI caused dysregulation in the diurnal expression of core circadian genes (Bmal1, Clock, Per1,2, Cry1,2) at 24 h post-TBI. CCI mice had reduced locomotor activity on running wheels in the first 7 d post-TBI; however, both CCI and HFHI mice were able to maintain circadian behavior cycles even in the absence of light cues. We used implantable EEG to measure sleep cycles and brain activity and found that there were no differences in the time spent awake, in NREM or REM sleep in either TBI model. However, in the sleep states, CCI mice have reduced delta power in NREM sleep and reduced theta power in REM sleep at 7 d post-TBI. Our data reveal that different types of brain trauma can result in distinct patterns of circadian and sleep disruptions and can be used to better understand the etiology of sleep disorders after TBI.
Collapse
|
13
|
Rowe RK, Griesbach GS. Immune-endocrine interactions in the pathophysiology of sleep-wake disturbances following traumatic brain injury: A narrative review. Brain Res Bull 2022; 185:117-128. [DOI: 10.1016/j.brainresbull.2022.04.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 12/16/2022]
|
14
|
Traumatic Brain Injury Characteristics Predictive of Subsequent Sleep-Wake Disturbances in Pediatric Patients. BIOLOGY 2022; 11:biology11040600. [PMID: 35453799 PMCID: PMC9030185 DOI: 10.3390/biology11040600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/02/2022]
Abstract
Simple Summary Traumatic brain injury is a leading cause of death and disabilities in children and adolescents. Poor sleep after brain injury can slow recovery and worsen outcomes. We investigated clinical sleep problems following pediatric brain injury. We examined characteristics of the injury and details about the patients that may be risk factors for developing sleep problems. The number of patients that developed problems with their sleep after a brain injury was similar between genders. The probability of insomnia increased with increasing patient age. The probability of ‘difficulty sleeping’ was highest in 7–9 year-old brain-injured patients. Older patients had a shorter time between brain injury and sleep problems compared to younger patients. Patients with severe brain injury had the shortest time between brain injury and development of sleep problems, whereas patients with mild or moderate brain injury had comparable times between brain injury and the onset of poor sleep. Multiple characteristics of brain injury and patient details were identified as risk factors for developing sleep problems following a brain injury in children. Untreated sleep problems after a brain injury can worsen symptoms, lengthen hospital stays, and delay return to school. Identifying risk factors could improve the diagnosis, management, and treatment of sleep problems in survivors of pediatric brain injury. Abstract The objective of this study was to determine the prevalence of sleep-wake disturbances (SWD) following pediatric traumatic brain injury (TBI), and to examine characteristics of TBI and patient demographics that might be predictive of subsequent SWD development. This single-institution retrospective study included patients diagnosed with a TBI during 2008–2019 who also had a subsequent diagnosis of an SWD. Data were collected using ICD-9/10 codes for 207 patients and included the following: age at initial TBI, gender, TBI severity, number of TBIs diagnosed prior to SWD diagnosis, type of SWD, and time from initial TBI to SWD diagnosis. Multinomial logit and negative-binomial models were fit to investigate whether the multiple types of SWD and the time to onset of SWD following TBI could be predicted by patient variables. Distributions of SWD diagnosed after TBI were similar between genders. The probability of insomnia increased with increasing patient age. The probability of ‘difficulty sleeping’ was highest in 7–9 year-old TBI patients. Older TBI patients had shorter time to SWD onset than younger patients. Patients with severe TBI had the shortest time to SWD onset, whereas patients with mild or moderate TBI had comparable times to SWD onset. Multiple TBI characteristics and patient demographics were predictive of a subsequent SWD diagnosis in the pediatric population. This is an important step toward increasing education among providers, parents, and patients about the risk of developing SWD following TBI.
Collapse
|
15
|
van Alphen B, Stewart S, Iwanaszko M, Xu F, Li K, Rozenfeld S, Ramakrishnan A, Itoh TQ, Sisobhan S, Qin Z, Lear BC, Allada R. Glial immune-related pathways mediate effects of closed head traumatic brain injury on behavior and lethality in Drosophila. PLoS Biol 2022; 20:e3001456. [PMID: 35081110 PMCID: PMC8791498 DOI: 10.1371/journal.pbio.3001456] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 10/22/2021] [Indexed: 02/07/2023] Open
Abstract
In traumatic brain injury (TBI), the initial injury phase is followed by a secondary phase that contributes to neurodegeneration, yet the mechanisms leading to neuropathology in vivo remain to be elucidated. To address this question, we developed a Drosophila head-specific model for TBI termed Drosophila Closed Head Injury (dCHI), where well-controlled, nonpenetrating strikes are delivered to the head of unanesthetized flies. This assay recapitulates many TBI phenotypes, including increased mortality, impaired motor control, fragmented sleep, and increased neuronal cell death. TBI results in significant changes in the transcriptome, including up-regulation of genes encoding antimicrobial peptides (AMPs). To test the in vivo functional role of these changes, we examined TBI-dependent behavior and lethality in mutants of the master immune regulator NF-κB, important for AMP induction, and found that while sleep and motor function effects were reduced, lethality effects were enhanced. Similarly, loss of most AMP classes also renders flies susceptible to lethal TBI effects. These studies validate a new Drosophila TBI model and identify immune pathways as in vivo mediators of TBI effects. Traumatic brain injury in Drosophila causes sleep and motor impairments, as well as a strong activation of the innate immune response that is crucial for survival. This study leverages Drosophila as a model organism to reveal neuroprotective and neurotoxic injury mechanisms more quickly using high throughout approaches.
Collapse
Affiliation(s)
- Bart van Alphen
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Samuel Stewart
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Marta Iwanaszko
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
- Department of Preventive Medicine—Biostatistics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Fangke Xu
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Keyin Li
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Sydney Rozenfeld
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Anujaianthi Ramakrishnan
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Taichi Q. Itoh
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Shiju Sisobhan
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Zuoheng Qin
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Bridget C. Lear
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
| | - Ravi Allada
- Department of Neurobiology, Northwestern University, Evanston, Illinois, United States of America
- * E-mail:
| |
Collapse
|
16
|
Topchiy I, Fink AM, Maki KA, Calik MW. Validation of PiezoSleep Scoring Against EEG/EMG Sleep Scoring in Rats. Nat Sci Sleep 2022; 14:1877-1886. [PMID: 36300015 PMCID: PMC9590343 DOI: 10.2147/nss.s381367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022] Open
Abstract
INTRODUCTION Current methods of sleep research in rodents involve invasive surgical procedures of EEG and EMG electrodes implantation. Recently, a new method of measuring sleep, PiezoSleep, has been validated against implanted electrodes in mice and rats. PiezoSleep uses a piezoelectric film transducer to detect the rodent's movements and respiration and employs an algorithm to automatically score sleep. Here, we validate PiezoSleep scoring versus EEG/EMG implanted electrodes sleep scoring in rats. METHODS Adult male Brown Norway and Wistar Kyoto rats were implanted with bilateral stainless-steel screws into the skull for EEG recording and bilateral wire electrodes into the nuchal muscles for EMG assessment. In Brown Norway rats, the EEG/EMG electrode leads were soldered to a miniature connector plug and fixed to the skull. In Wistar Kyoto rats, the EEG/EMG leads were tunneled subcutaneously to a telemetry transmitter implanted in the flank. Rats were allowed to recover from surgery for one week. Brown Norway rats were placed in PiezoSleep cages, and had their headsets connected to cable for recording EEG/EMG signals, which were then manually scored by a human scorer in 10-sec epochs. Wistar Kyoto rats were placed in PiezoSleep cages, and EEG/EMG signals were recorded using a telemetry system (DSI). Sleep was scored automatically in 4-sec epochs using NeuroScore software. PiezoSleep software recorded and scored sleep in the rats. RESULTS Rats implanted with corded EEG/EMG headsets had 85.6% concurrence of sleep-wake scoring with PiezoSleep. Rats implanted with EEG/EMG telemetry had 80.8% concurrence sleep-wake scoring with PiezoSleep. Sensitivity and specificity rates were similar between the EEG/EMG recording systems. Total sleep time and hourly sleep times did not differ in all three systems. However, automatic sleep detection by NeuroScore classified more sleep during the light period compared to the PiezoSleep. CONCLUSION We showed that PiezoSleep system can be a reliable alternative to both automatic and visual EEG/EMG- based sleep-wake scoring in rat.
Collapse
Affiliation(s)
- Irina Topchiy
- Center for Sleep and Health Research, University of Illinois Chicago, Chicago, IL, USA.,Department of Biobehavioral Nursing Science; University of Illinois Chicago, Chicago, IL, USA
| | - Anne M Fink
- Center for Sleep and Health Research, University of Illinois Chicago, Chicago, IL, USA.,Department of Biobehavioral Nursing Science; University of Illinois Chicago, Chicago, IL, USA
| | - Katherine A Maki
- Department of Biobehavioral Nursing Science; University of Illinois Chicago, Chicago, IL, USA.,Translational Biobehavioral and Health Disparities Branch, Clinical Center; National Institutes of Health, Bethesda, MD, USA
| | - Michael W Calik
- Center for Sleep and Health Research, University of Illinois Chicago, Chicago, IL, USA.,Department of Biobehavioral Nursing Science; University of Illinois Chicago, Chicago, IL, USA
| |
Collapse
|
17
|
Apostol CR, Bernard K, Tanguturi P, Molnar G, Bartlett MJ, Szabò L, Liu C, Ortiz JB, Saber M, Giordano KR, Green TRF, Melvin J, Morrison HW, Madhavan L, Rowe RK, Streicher JM, Heien ML, Falk T, Polt R. Design and Synthesis of Brain Penetrant Glycopeptide Analogues of PACAP With Neuroprotective Potential for Traumatic Brain Injury and Parkinsonism. FRONTIERS IN DRUG DISCOVERY 2022; 1. [PMID: 35237767 PMCID: PMC8887546 DOI: 10.3389/fddsv.2021.818003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
There is an unmet clinical need for curative therapies to treat neurodegenerative disorders. Most mainstay treatments currently on the market only alleviate specific symptoms and do not reverse disease progression. The Pituitary adenylate cyclase-activating polypeptide (PACAP), an endogenous neuropeptide hormone, has been extensively studied as a potential regenerative therapeutic. PACAP is widely distributed in the central nervous system (CNS) and exerts its neuroprotective and neurotrophic effects via the related Class B GPCRs PAC1, VPAC1, and VPAC2, at which the hormone shows roughly equal activity. Vasoactive intestinal peptide (VIP) also activates these receptors, and this close analogue of PACAP has also shown to promote neuronal survival in various animal models of acute and progressive neurodegenerative diseases. However, PACAP's poor pharmacokinetic profile (non-linear PK/PD), and more importantly its limited blood-brain barrier (BBB) permeability has hampered development of this peptide as a therapeutic. We have demonstrated that glycosylation of PACAP and related peptides promotes penetration of the BBB and improves PK properties while retaining efficacy and potency in the low nanomolar range at its target receptors. Furthermore, judicious structure-activity relationship (SAR) studies revealed key motifs that can be modulated to afford compounds with diverse selectivity profiles. Most importantly, we have demonstrated that select PACAP glycopeptide analogues (2LS80Mel and 2LS98Lac) exert potent neuroprotective effects and anti-inflammatory activity in animal models of traumatic brain injury and in a mild-toxin lesion model of Parkinson's disease, highlighting glycosylation as a viable strategy for converting endogenous peptides into robust and efficacious drug candidates.
Collapse
Affiliation(s)
- Christopher R Apostol
- Department of Chemistry and Biochemistry, BIO5, The University of Arizona, Tucson, AZ, United States
| | - Kelsey Bernard
- Graduate Interdisciplinary Program in Physiological Sciences, The University of Arizona, Tucson, AZ, United States
| | | | - Gabriella Molnar
- Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Mitchell J Bartlett
- Department of Neurology, College of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Lajos Szabò
- Department of Chemistry and Biochemistry, BIO5, The University of Arizona, Tucson, AZ, United States
| | - Chenxi Liu
- Department of Chemistry and Biochemistry, BIO5, The University of Arizona, Tucson, AZ, United States
| | - J Bryce Ortiz
- Barrow Neurological Institute at Phoenix Children's Hospital, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Phoenix Veteran Affairs Health Care System, Phoenix, AZ, United States
| | - Maha Saber
- Barrow Neurological Institute at Phoenix Children's Hospital, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States
| | - Katherine R Giordano
- Barrow Neurological Institute at Phoenix Children's Hospital, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Phoenix Veteran Affairs Health Care System, Phoenix, AZ, United States
| | - Tabitha R F Green
- Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States
| | - James Melvin
- Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Biological Sciences, University of Bath, Bath, United Kingdom
| | - Helena W Morrison
- College of Nursing, University of Arizona, Tucson, AZ, United States
| | - Lalitha Madhavan
- Graduate Interdisciplinary Program in Physiological Sciences, The University of Arizona, Tucson, AZ, United States.,Department of Neurology, College of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Rachel K Rowe
- Barrow Neurological Institute at Phoenix Children's Hospital, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Child Health, The University of Arizona College of Medicine-Phoenix, Phoenix, AZ, United States.,Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, United States
| | - John M Streicher
- Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Michael L Heien
- Department of Chemistry and Biochemistry, BIO5, The University of Arizona, Tucson, AZ, United States
| | - Torsten Falk
- Graduate Interdisciplinary Program in Physiological Sciences, The University of Arizona, Tucson, AZ, United States.,Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, United States.,Department of Neurology, College of Medicine, The University of Arizona, Tucson, AZ, United States
| | - Robin Polt
- Department of Chemistry and Biochemistry, BIO5, The University of Arizona, Tucson, AZ, United States
| |
Collapse
|
18
|
Wiseman-Hakes C, Foster E, Langer L, Chandra T, Bayley M, Comper P. Characterizing Sleep and Wakefulness in the Acute Phase of Concussion in the General Population: A Naturalistic Cohort from the Toronto Concussion Study. J Neurotrauma 2021; 39:172-180. [PMID: 34714132 DOI: 10.1089/neu.2021.0295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Growing literature links concussion to changes in sleep and wakefulness in humans and in rodent models. Sleep has been linked with synaptic reorganization under other conditions; however, the characterization and role of sleep after acute concussion remains poorly understood. While much research has focused on insomnia among patients with chronic or persistent concussion symptoms, there is limited understanding of sleep and acute concussion, its potential role in recovery, and associated risk factors for the development of chronic sleep disturbance. Studies to date are limited by small sample sizes of primarily athlete or military populations. Additional studies among the general population are critical to inform best practice guidelines. We examined the sleep and daytime wakefulness of 472 adults from a naturalistic general population cohort (mean age, 33.3 years, females = 60.8%) within seven days of diagnosed concussion, using a validated, condition-specific measure, the Sleep and Concussion Questionnaire. Participants identified immediate changes in sleep characterized by hypersomnia and difficulty maintaining daytime wakefulness; 35% considered these changes as moderate to severe and 79% required monitoring or follow-up. Females experienced significantly greater severity of changes in sleep compared with males. Positive correlations between severity of sleep and pain and headache were identified. Differences by sex are an important consideration for early intervention and long-term monitoring. Because sleep was compromised by pain, pain management is also an integral part of early intervention. Our findings suggest that assessment of sleep beginning in the acute stage is a critical component of concussion management in the general population.
Collapse
Affiliation(s)
- Catherine Wiseman-Hakes
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.,School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada
| | - Evan Foster
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.,Translational Research Program, University of Toronto, Toronto, Ontario, Canada
| | - Laura Langer
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada
| | - Tharshini Chandra
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada
| | - Mark Bayley
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.,Physiatry, University of Toronto, Toronto, Ontario, Canada
| | - Paul Comper
- Toronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.,Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
19
|
Smith DH, Kochanek PM, Rosi S, Meyer R, Ferland-Beckham C, Prager EM, Ahlers ST, Crawford F. Roadmap for Advancing Pre-Clinical Science in Traumatic Brain Injury. J Neurotrauma 2021; 38:3204-3221. [PMID: 34210174 PMCID: PMC8820284 DOI: 10.1089/neu.2021.0094] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Pre-clinical models of disease have long played important roles in the advancement of new treatments. However, in traumatic brain injury (TBI), despite the availability of numerous model systems, translation from bench to bedside remains elusive. Integrating clinical relevance into pre-clinical model development is a critical step toward advancing therapies for TBI patients across the spectrum of injury severity. Pre-clinical models include in vivo and ex vivo animal work-both small and large-and in vitro modeling. The wide range of pre-clinical models reflect substantial attempts to replicate multiple aspects of TBI sequelae in humans. Although these models reveal multiple putative mechanisms underlying TBI pathophysiology, failures to translate these findings into successful clinical trials call into question the clinical relevance and applicability of the models. Here, we address the promises and pitfalls of pre-clinical models with the goal of evolving frameworks that will advance translational TBI research across models, injury types, and the heterogenous etiology of pathology.
Collapse
Affiliation(s)
- Douglas H Smith
- Center for Brain Injury and Repair, Department of Neurosurgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Patrick M Kochanek
- Department of Critical Care Medicine; Safar Center for Resuscitation Research, University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh of UPMC, Rangos Research Center, Pittsburgh, Pennsylvania, USA
| | - Susanna Rosi
- Departments of Physical Therapy Rehabilitation Science, Neurological Surgery, Weill Institute for Neuroscience, University of California San Francisco, Zuckerberg San Francisco General Hospital, San Francisco, California, USA
| | - Retsina Meyer
- Cohen Veterans Bioscience, New York, New York, USA.,Delix Therapeutics, Inc, Boston, Massachusetts, USA
| | | | | | - Stephen T Ahlers
- Department of Neurotrauma, Operational and Undersea Medicine Directorate Naval Medical Research Center, Silver Spring, Maryland, USA
| | | |
Collapse
|
20
|
Saber M, Murphy SM, Cho Y, Lifshitz J, Rowe RK. Experimental diffuse brain injury and a model of Alzheimer's disease exhibit disease-specific changes in sleep and incongruous peripheral inflammation. J Neurosci Res 2021; 99:1136-1160. [PMID: 33319441 PMCID: PMC7897258 DOI: 10.1002/jnr.24771] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 11/18/2020] [Accepted: 11/24/2020] [Indexed: 01/09/2023]
Abstract
Elderly populations (≥65 years old) have the highest risk of developing Alzheimer's disease (AD) and/or obtaining a traumatic brain injury (TBI). Using translational mouse models, we investigated sleep disturbances and inflammation associated with normal aging, TBI and aging, and AD. We hypothesized that aging results in marked changes in sleep compared with adult mice, and that TBI and aging would result in sleep and inflammation levels similar to AD mice. We used female 16-month-old wild-type (WT Aged) and 3xTg-AD mice, as well as a 2-month-old reference group (WT Adult), to evaluate sleep changes. WT Aged mice received diffuse TBI by midline fluid percussion, and blood was collected from both WT Aged (pre- and post-TBI) and 3xTg-AD mice to evaluate inflammation. Cognitive behavior was tested, and tissue was collected for histology. Bayesian generalized additive and mixed-effects models were used for analyses. Both normal aging and AD led to increases in sleep compared with adult mice. WT Aged mice with TBI slept substantially more, with fragmented shorter bouts, than they did pre-TBI and compared with AD mice. However, differences between WT Aged and 3xTg-AD mice in immune cell populations and plasma cytokine levels were incongruous, cognitive deficits were similar, and cumulative sleep was not predictive of inflammation or behavior for either group. Our results suggest that in similarly aged individuals, TBI immediately induces more profound sleep alterations than in AD, although both diseases likely include cognitive impairments. Unique pathological sleep pathways may exist in elderly individuals who incur TBI compared with similarly aged individuals who have AD, which may warrant disease-specific treatments in clinical settings.
Collapse
Affiliation(s)
- Maha Saber
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Sean M. Murphy
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Yerin Cho
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ
| | - Rachel K. Rowe
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ
| |
Collapse
|
21
|
Konduru SS, Wallace EP, Pfammatter JA, Rodrigues PV, Jones MV, Maganti RK. Sleep-wake characteristics in a mouse model of severe traumatic brain injury: Relation to posttraumatic epilepsy. Epilepsia Open 2021; 6:181-194. [PMID: 33681661 PMCID: PMC7918302 DOI: 10.1002/epi4.12462] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 12/01/2022] Open
Abstract
Study objectives Traumatic brain injury (TBI) results in sequelae that include posttraumatic epilepsy (PTE) and sleep-wake disturbances. Here, we sought to determine whether sleep characteristics could predict development of PTE in a model of severe TBI. Methods Following controlled cortical impact (CCI) or sham injury (craniotomy only), CD-1 mice were implanted with epidural electroencephalography (EEG) and nuchal electromyography (EMG) electrodes. Acute (1st week) and chronic (months 1, 2, or 3) 1-week-long video-EEG recordings were performed after the injury to examine epileptiform activity. High-amplitude interictal events were extracted from EEG using an automated method. After scoring sleep-wake patterns, sleep spindles and EEG delta power were derived from nonrapid eye movement (NREM) sleep epochs. Brain CTs (computerized tomography) were performed in sham and CCI cohorts to quantify the brain lesions. We then employed a no craniotomy (NC) control to perform 1-week-long EEG recordings at week 1 and month 1 after surgery. Results Posttraumatic seizures were seen in the CCI group only, whereas interictal epileptiform activity was seen in CCI or sham. Sleep-wake disruptions consisted of shorter wake or NREM bout lengths and shorter duration or lower power for spindles in CCI and sham. NREM EEG delta power increased in CCI and sham groups compared with NC though the CCI group with posttraumatic seizures had lower power at a chronic time point compared with those without. Follow-up brain CTs showed a small lesion in the sham injury group suggesting a milder form of TBI that may account for their interictal activity and sleep changes. Significance In our TBI model, tracking changes in NREM delta power distinguishes between CCI acutely and animals that will eventually develop PTE, but further work is necessary to identify sleep biomarkers of PTE. Employing NC controls together with sham controls should be considered in future TBI studies.
Collapse
Affiliation(s)
- Sai Sruthi Konduru
- Department of NeurologyUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| | - Eli P. Wallace
- Department of NeurologyUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
- Department of NeuroscienceUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
- Cellular and Molecular Pathology Graduate ProgramUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| | - Jesse A. Pfammatter
- Department of NeuroscienceUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| | - Paulo V. Rodrigues
- Department of NeurologyUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| | - Mathew V. Jones
- Department of NeuroscienceUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| | - Rama K. Maganti
- Department of NeurologyUniversity of Wisconsin School of Medicine and Public HealthMadisonWIUSA
| |
Collapse
|
22
|
Rowe RK, Ortiz JB, Thomas TC. Mild and Moderate Traumatic Brain Injury and Repeated Stress Affect Corticosterone in the Rat. Neurotrauma Rep 2020; 1:113-124. [PMID: 34223536 PMCID: PMC8240883 DOI: 10.1089/neur.2020.0019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Traumatic brain injury (TBI) survivors suffer from a range of morbidities, including post-traumatic endocrinopathies that can cause physical and mental changes in patients, greatly compromising quality of life. This study tested the hypothesis that mild and moderate diffuse TBI leads to chronic deficiencies in corticosterone (CORT) regulation following repeated exposure to restraint stress over time. Young adult male rats (n = 9–11/group) were subjected to mild or moderate TBI induced by midline fluid percussion injury (mFPI) or control sham surgery. At 6 and 24 h post-injury, both mild and moderate TBI resulted in elevated resting plasma CORT levels compared with uninjured shams. Independent of TBI severity, all rats had lower resting plasma CORT levels at 7, 14, 28, and 54 days post-injury compared with pre-surgery baseline CORT. Circulating levels of CORT were also evaluated under restraint stress and in response to dexamethasone (DEX), a synthetic glucocorticoid. Independent of TBI severity, restraint stress elevated CORT at 30, 60, and 90 min post-stressor initiation at all post-injury time-points. A blunted CORT response to restraint stress was observed with lower CORT levels after restraint at 28 and 54 days compared with 7 days post-injury (DPI), indicative of habituation to the stressor. A high dose of DEX lowered CORT levels at 90 min post-restraint stress initiation compared with low-dose DEX, independent of TBI severity. These results support TBI-induced CORT dysregulation at acute time-points, but additional studies that investigate the onset and progression of endocrinopathies, controlling for habituation to repeated restraint stress, are needed to inform the diagnosis and treatment of such morbidities in TBI survivors.
Collapse
Affiliation(s)
- Rachel K Rowe
- Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, USA.,Department of Child Health, University of Arizona College of Medicine Phoenix, Phoenix, Arizona, USA.,Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| | - J Bryce Ortiz
- Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, USA.,Department of Child Health, University of Arizona College of Medicine Phoenix, Phoenix, Arizona, USA
| | - Theresa Currier Thomas
- Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, USA.,Department of Child Health, University of Arizona College of Medicine Phoenix, Phoenix, Arizona, USA.,Phoenix Veteran Affairs Health Care System, Phoenix, Arizona, USA
| |
Collapse
|
23
|
Green TRF, Ortiz JB, Wonnacott S, Williams RJ, Rowe RK. The Bidirectional Relationship Between Sleep and Inflammation Links Traumatic Brain Injury and Alzheimer's Disease. Front Neurosci 2020; 14:894. [PMID: 32982677 PMCID: PMC7479838 DOI: 10.3389/fnins.2020.00894] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022] Open
Abstract
Traumatic brain injury (TBI) and Alzheimer's disease (AD) are diseases during which the fine-tuned autoregulation of the brain is lost. Despite the stark contrast in their causal mechanisms, both TBI and AD are conditions which elicit a neuroinflammatory response that is coupled with physical, cognitive, and affective symptoms. One commonly reported symptom in both TBI and AD patients is disturbed sleep. Sleep is regulated by circadian and homeostatic processes such that pathological inflammation may disrupt the chemical signaling required to maintain a healthy sleep profile. In this way, immune system activation can influence sleep physiology. Conversely, sleep disturbances can exacerbate symptoms or increase the risk of inflammatory/neurodegenerative diseases. Both TBI and AD are worsened by a chronic pro-inflammatory microenvironment which exacerbates symptoms and worsens clinical outcome. Herein, a positive feedback loop of chronic inflammation and sleep disturbances is initiated. In this review, the bidirectional relationship between sleep disturbances and inflammation is discussed, where chronic inflammation associated with TBI and AD can lead to sleep disturbances and exacerbated neuropathology. The role of microglia and cytokines in sleep disturbances associated with these diseases is highlighted. The proposed sleep and inflammation-mediated link between TBI and AD presents an opportunity for a multifaceted approach to clinical intervention.
Collapse
Affiliation(s)
- Tabitha R. F. Green
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ, United States
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ, United States
| | - J. Bryce Ortiz
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ, United States
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ, United States
| | - Sue Wonnacott
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Robert J. Williams
- Department of Biology and Biochemistry, University of Bath, Bath, United Kingdom
| | - Rachel K. Rowe
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ, United States
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ, United States
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ, United States
| |
Collapse
|
24
|
Tapp ZM, Kumar JE, Witcher KG, Atluri RR, Velasquez JA, O'Neil SM, Dziabis JE, Bray CE, Sheridan JF, Godbout JP, Kokiko-Cochran ON. Sleep Disruption Exacerbates and Prolongs the Inflammatory Response to Traumatic Brain Injury. J Neurotrauma 2020; 37:1829-1843. [PMID: 32164485 PMCID: PMC7404833 DOI: 10.1089/neu.2020.7010] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Traumatic brain injury (TBI) alters stress responses, which may influence neuroinflammation and behavioral outcome. Sleep disruption (SD) is an understudied post-injury environmental stressor that directly engages stress-immune pathways. Thus, we predicted that maladaptive changes in the hypothalamic-pituitary-adrenal (HPA) axis after TBI compromise the neuroendocrine response to SD and exacerbate neuroinflammation. To test this, we induced lateral fluid percussion TBI or sham injury in female and male C57BL/6 mice aged 8-10 weeks that were then left undisturbed or exposed to 3 days of transient SD. At 3 days post-injury (DPI) plasma corticosterone (CORT) was reduced in TBI compared with sham mice, indicating altered HPA-mediated stress response to SD. This response was associated with approach-avoid conflict behavior and exaggerated cortical neuroinflammation. Post-injury SD specifically enhanced neutrophil trafficking to the injured brain in conjunction with dysregulated aquaporin-4 (AQP4) polarization. Delayed and persistent effects of post-injury SD were determined 4 days after SD concluded at 7 DPI. SD prolonged anxiety-like behavior regardless of injury and was associated with increased cortical Iba1 labeling in both sham and TBI mice. Strikingly, TBI SD mice displayed an increased number of CD45+ cells near the site of injury, enhanced cortical glial fibrillary acidic protein (GFAP) immunolabeling, and persistent expression of Trem2 and Tlr4 7 DPI compared with TBI mice. These results support the hypothesis that post-injury SD alters stress-immune pathways and inflammatory outcomes after TBI. These data provide new insight to the dynamic interplay between TBI, stress, and inflammation.
Collapse
Affiliation(s)
- Zoe M. Tapp
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Julia E. Kumar
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Kristina G. Witcher
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Ravitej R. Atluri
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - John A. Velasquez
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Shane M. O'Neil
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Julia E. Dziabis
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - Chelsea E. Bray
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
| | - John F. Sheridan
- Division of Biosciences, College of Dentistry, The Ohio State University, Columbus, Ohio, USA
- Neurological Institute, Institute for Behavioral Medicine Research (IBMR), The Ohio State University, Columbus, Ohio, USA
| | - Jonathan P. Godbout
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
- Neurological Institute, Institute for Behavioral Medicine Research (IBMR), The Ohio State University, Columbus, Ohio, USA
- Chronic Brain Injury Program, The Ohio State University, Columbus, Ohio, USA
| | - Olga N. Kokiko-Cochran
- Department of Neuroscience, College of Medicine, The Ohio State University, Columbus, Ohio, USA
- Neurological Institute, Institute for Behavioral Medicine Research (IBMR), The Ohio State University, Columbus, Ohio, USA
- Chronic Brain Injury Program, The Ohio State University, Columbus, Ohio, USA
| |
Collapse
|
25
|
Saber M, Giordano KR, Hur Y, Ortiz JB, Morrison H, Godbout JP, Murphy SM, Lifshitz J, Rowe RK. Acute peripheral inflammation and post-traumatic sleep differ between sexes after experimental diffuse brain injury. Eur J Neurosci 2020; 52:2791-2814. [PMID: 31677290 PMCID: PMC7195243 DOI: 10.1111/ejn.14611] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 10/15/2019] [Accepted: 10/22/2019] [Indexed: 12/17/2022]
Abstract
Identifying differential responses between sexes following traumatic brain injury (TBI) can elucidate the mechanisms behind disease pathology. Peripheral and central inflammation in the pathophysiology of TBI can increase sleep in male rodents, but this remains untested in females. We hypothesized that diffuse TBI would increase inflammation and sleep in males more so than in females. Diffuse TBI was induced in C57BL/6J mice and serial blood samples were collected (baseline, 1, 5, 7 days post-injury [DPI]) to quantify peripheral immune cell populations and sleep regulatory cytokines. Brains and spleens were harvested at 7DPI to quantify central and peripheral immune cells, respectively. Mixed-effects regression models were used for data analysis. Female TBI mice had 77%-124% higher IL-6 levels than male TBI mice at 1 and 5DPI, whereas IL-1β and TNF-α levels were similar between sexes at all timepoints. Despite baseline sex differences in blood-measured Ly6Chigh monocytes (females had 40% more than males), TBI reduced monocytes by 67% in TBI mice at 1DPI. Male TBI mice had 31%-33% more blood-measured and 31% more spleen-measured Ly6G+ neutrophils than female TBI mice at 1 and 5DPI, and 7DPI, respectively. Compared with sham, TBI increased sleep in both sexes during the first light and dark cycles. Male TBI mice slept 11%-17% more than female TBI mice, depending on the cycle. Thus, sex and TBI interactions may alter the peripheral inflammation profile and sleep patterns, which might explain discrepancies in disease progression based on sex.
Collapse
Affiliation(s)
- Maha Saber
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Katherine R. Giordano
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Yerin Hur
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - J. Bryce Ortiz
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | | | - Jonathan P. Godbout
- Department of Neuroscience, The Ohio State University, Columbus, OH, USA
- Center for Brain and Spinal Cord Repair, The Ohio State University, Columbus, OH, USA
- Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, USA
| | - Sean M. Murphy
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ, USA
| | - Rachel K. Rowe
- BARROW Neurological Institute at Phoenix Children’s Hospital, Phoenix, AZ
- Department of Child Health, University of Arizona College of Medicine – Phoenix, Phoenix, AZ
- Phoenix Veteran Affairs Health Care System, Phoenix, AZ, USA
| |
Collapse
|
26
|
Intracerebral hemorrhage in the mouse altered sleep-wake patterns and activated microglia. Exp Neurol 2020; 327:113242. [DOI: 10.1016/j.expneurol.2020.113242] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/22/2020] [Accepted: 02/09/2020] [Indexed: 01/06/2023]
|
27
|
Salberg S, Christensen J, Yamakawa GR, Lengkeek C, Malik H, Tabor J, Hazari A, Mychasiuk R. A Bump on the Head or Late to Bed: Behavioral and Pathophysiological Effects of Sleep Deprivation after Repetitive Mild Traumatic Brain Injury in Adolescent Rats. J Neurotrauma 2019; 35:1895-1905. [PMID: 30074871 DOI: 10.1089/neu.2018.5744] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
An old wives' tale, and strongly held dogma, maintains that one should be kept awake after a mild traumatic brain injury (mTBI) to prevent a coma. This, however, conflicts with the known benefits of sleep: repair and restoration. We therefore sought to examine the effects of sleep deprivation (SD) in the post-traumatic sleep period on post-concussion symptomology (PCS). Adolescent male and female rats were administered repetitive mTBIs (RmTBI) or sham injuries and were then assigned to 5 h of SD or left undisturbed. All animals were then tested using seven behavioral tasks validated to examine PCS, followed by analysis of serum cytokines, and quantitative real-time PCR for messenger RNA (mRNA) expression. Exposure to 3 SD epochs significantly impaired behavior in 4 of 7 of the measures, while RmTBI also produced dysfunction in 5 of 7 tests, but the effects of SD and RmTBI were not cumulative. SD induced long-lasting changes in serum levels of Tnf-α, IL6, and IL-1ß. mRNA expression in the pre-frontal cortex, hippocampus, hypothalamus, and anterior cingulate cortex was modified in response to SD and RmTBI; but similar to the behavioral measures, the mRNA changes were not cumulative. Consequently, we report that SD often produced impairments similar or worse than RmTBI, and sleep hygiene should become a priority for adolescent health.
Collapse
Affiliation(s)
- Sabrina Salberg
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | | | - Glenn R Yamakawa
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | - Connor Lengkeek
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | - Haris Malik
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | - Jason Tabor
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | - Ali Hazari
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| | - Richelle Mychasiuk
- Department of Psychology, University of Calgary , Calgary, Alberta, Canada
| |
Collapse
|
28
|
Wang YS, Hsieh W, Chung JR, Lan TH, Wang Y. Repetitive mild traumatic brain injury alters diurnal locomotor activity and response to the light change in mice. Sci Rep 2019; 9:14067. [PMID: 31575951 PMCID: PMC6773703 DOI: 10.1038/s41598-019-50513-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 09/13/2019] [Indexed: 12/14/2022] Open
Abstract
Mild traumatic brain injury (mTBI) is a common cause of brain damage with a high incidence of multiple mTBIs found among athletes and soldiers. The purpose of this study is to examine the diurnal behavioral changes after multiple mTBIs. Adult mice were anesthetized; mTBI was conducted by dropping a 30-g weight to the right temporal skull once (mTBI1) or three times (mTBI3) over 3-week. Open-field motor behavior was recorded for 3 days after the last mTBI. In the first 4-hour exploratory phase, mTBI1 or mTBI3 equally reduced locomotor activity. A significant reduction of locomotor activity was found in the dark cycle between 4–72 hour in mTBI1 or mTBI3 mice; higher motor activity was seen after mTBI3 compared to mTBI1. In the light cycle, mTBI3 mice demonstrated an earlier immobilization followed by hyperactivity. The response to light change significantly correlated with the number of impacts. The IBA1 and BAX protein levels were equally increased in the lesioned cortex after mTBI1 and mTBI3. mTBI3 selectively upregulated the expression of circadian clock gene Per1 in hypothalamus and hippocampus as well as iNOS expression in the lesioned side cortex. Our data suggest multiple mTBIs alter diurnal locomotor activity and response to the change of light, which may involve Per1 expression in the lesioned brain.
Collapse
Affiliation(s)
- Yu-Syuan Wang
- Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan
| | - Wei Hsieh
- Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan
| | - Jia-Ru Chung
- Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan
| | - Tsuo-Hung Lan
- Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan.,Department of Psychiatry, Taichung Veteran General Hospital, Taichung, Taiwan.,Department of Psychiatry, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yun Wang
- Center for Neuropsychiatric Research, National Health Research Institutes, Zhunan, Taiwan.
| |
Collapse
|
29
|
Hajiaghamemar M, Seidi M, Oeur RA, Margulies SS. Toward development of clinically translatable diagnostic and prognostic metrics of traumatic brain injury using animal models: A review and a look forward. Exp Neurol 2019; 318:101-123. [PMID: 31055005 PMCID: PMC6612432 DOI: 10.1016/j.expneurol.2019.04.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 04/11/2019] [Accepted: 04/30/2019] [Indexed: 12/11/2022]
Abstract
Traumatic brain injury is a leading cause of cognitive and behavioral deficits in children in the US each year. There is an increasing interest in both clinical and pre-clinical studies to discover biomarkers to accurately diagnose traumatic brain injury (TBI), predict its outcomes, and monitor its progression especially in the developing brain. In humans, the heterogeneity of TBI in terms of clinical presentation, injury causation, and mechanism has contributed to the many challenges associated with finding unifying diagnosis, treatment, and management practices. In addition, findings from adult human research may have little application to pediatric TBI, as age and maturation levels affect the injury biomechanics and neurophysiological consequences of injury. Animal models of TBI are vital to address the variability and heterogeneity of TBI seen in human by isolating the causation and mechanism of injury in reproducible manner. However, a gap between the pre-clinical findings and clinical applications remains in TBI research today. To take a step toward bridging this gap, we reviewed several potential TBI tools such as biofluid biomarkers, electroencephalography (EEG), actigraphy, eye responses, and balance that have been explored in both clinical and pre-clinical studies and have shown potential diagnostic, prognostic, or monitoring utility for TBI. Each of these tools measures specific deficits following TBI, is easily accessible, non/minimally invasive, and is potentially highly translatable between animals and human outcomes because they involve effort-independent and non-verbal tasks. Especially conspicuous is the fact that these biomarkers and techniques can be tailored for infants and toddlers. However, translation of preclinical outcomes to clinical applications of these tools necessitates addressing several challenges. Among the challenges are the heterogeneity of clinical TBI, age dependency of some of the biomarkers, different brain structure, life span, and possible variation between temporal profiles of biomarkers in human and animals. Conducting parallel clinical and pre-clinical research, in addition to the integration of findings across species from several pre-clinical models to generate a spectrum of TBI mechanisms and severities is a path toward overcoming some of these challenges. This effort is possible through large scale collaborative research and data sharing across multiple centers. In addition, TBI causes dynamic deficits in multiple domains, and thus, a panel of biomarkers combining these measures to consider different deficits is more promising than a single biomarker for TBI. In this review, each of these tools are presented along with the clinical and pre-clinical findings, advantages, challenges and prospects of translating the pre-clinical knowledge into the human clinical setting.
Collapse
Affiliation(s)
- Marzieh Hajiaghamemar
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA.
| | - Morteza Seidi
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - R Anna Oeur
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Susan S Margulies
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| |
Collapse
|
30
|
Rowe RK, Harrison JL, Morrison HW, Subbian V, Murphy SM, Lifshitz J. Acute Post-Traumatic Sleep May Define Vulnerability to a Second Traumatic Brain Injury in Mice. J Neurotrauma 2019; 36:1318-1334. [PMID: 30398389 PMCID: PMC6479254 DOI: 10.1089/neu.2018.5980] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Chronic neurological impairments can manifest from repetitive traumatic brain injury (rTBI), particularly when subsequent injuries occur before the initial injury completely heals. Herein, we apply post-traumatic sleep as a physiological biomarker of vulnerability, hypothesizing that a second TBI during post-traumatic sleep worsens neurological and histological outcomes compared to one TBI or a second TBI after post-traumatic sleep subsides. Mice received sham or diffuse TBI by midline fluid percussion injury; brain-injured mice received one TBI or rTBIs at 3- or 9-h intervals. Over 40 h post-injury, injured mice slept more than shams. Functional assessments indicated lower latencies on rotarod and increased Neurological Severity Scores for mice with rTBIs within 3 h. Anxiety-like behaviors in the open field task were increased for mice with rTBIs at 3 h. Based on pixel density of silver accumulation, neuropathology was greater at 28 days post-injury (DPI) in rTBI groups than sham and single TBI. Cortical microglia morphology was quantified and mice receiving rTBI were de-ramified at 14 DPI compared to shams and mice receiving a single TBI, suggesting robust microglial response in rTBI groups. Orexin-A-positive cells were sustained in the lateral hypothalamus with no loss detected, indicating that loss of wake-promoting neurons did not contribute to post-traumatic sleep. Thus, duration of post-traumatic sleep is a period of vulnerability that results in exacerbated injury from rTBI. Monitoring individual post-traumatic sleep is a potential clinical tool for personalized TBI management, where regular sleep patterns may inform rehabilitative strategies and return-to-activity guidelines.
Collapse
Affiliation(s)
- Rachel K. Rowe
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona
| | - Jordan L. Harrison
- Department of Basic Medical Sciences, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona
| | | | - Vignesh Subbian
- University of Arizona College of Engineering, Tucson, Arizona
| | - Sean M. Murphy
- Department of Forestry and Natural Resources, University of Kentucky, Lexington, Kentucky
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona
- Department of Child Health, University of Arizona College of Medicine–Phoenix, Phoenix, Arizona
- Phoenix Veteran Affairs Health Care System, Phoenix, Arizona
| |
Collapse
|
31
|
Thomasy HE, Opp MR. Hypocretin Mediates Sleep and Wake Disturbances in a Mouse Model of Traumatic Brain Injury. J Neurotrauma 2019; 36:802-814. [PMID: 30136622 PMCID: PMC6387567 DOI: 10.1089/neu.2018.5810] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Traumatic brain injury (TBI) is a major cause of disability worldwide. Post-TBI sleep and wake disturbances are extremely common and difficult for patients to manage. Sleep and wake disturbances contribute to poor functional and emotional outcomes from TBI, yet effective therapies remain elusive. A more comprehensive understanding of mechanisms underlying post-TBI sleep and wake disturbance will facilitate development of effective pharmacotherapies. Previous research in human patients and animal models indicates that altered hypocretinergic function may be a major contributor to sleep-wake disturbance after TBI. In this study, we further elucidate the role of hypocretin by determining the impact of TBI on sleep-wake behavior of hypocretin knockout (HCRT KO) mice. Adult male C57BL/6J and HCRT KO mice were implanted with electroencephalography recording electrodes, and pre-injury baseline recordings were obtained. Mice were then subjected to either moderate TBI or sham surgery. Additional recordings were obtained and sleep-wake behavior determined at 3, 7, 15, and 30 days after TBI or sham procedures. At baseline, HCRT KO mice had a significantly different sleep-wake phenotype than control C57BL/6J mice. Post-TBI sleep-wake behavior was altered in a genotype-dependent manner: sleep of HCRT KO mice was not altered by TBI, whereas C57BL/6J mice had more non-rapid eye movement sleep, less wakefulness, and more short wake bouts and fewer long wake bouts. Numbers of hypocretin-positive cells were reduced in C57BL/6J mice by TBI. Collectively, these data indicate that the hypocretinergic system is involved in the alterations in sleep-wake behavior that develop after TBI in this model, and suggest potential therapeutic interventions.
Collapse
Affiliation(s)
- Hannah E. Thomasy
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, Washington
| | - Mark R. Opp
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, Washington
- Graduate Program in Neurobiology and Behavior, University of Washington, Seattle, Washington
| |
Collapse
|
32
|
Zhou X, Oishi Y, Cherasse Y, Korkutata M, Fujii S, Lee CY, Lazarus M. Extracellular adenosine and slow-wave sleep are increased after ablation of nucleus accumbens core astrocytes and neurons in mice. Neurochem Int 2019; 124:256-263. [PMID: 30690114 DOI: 10.1016/j.neuint.2019.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/07/2019] [Accepted: 01/19/2019] [Indexed: 02/06/2023]
Abstract
Sleep and wakefulness are controlled by a wide range of neuronal populations in the mammalian brain. Activation of adenosine A2A receptor (A2AR)-expressing neurons in the nucleus accumbens (NAc) core promotes slow-wave sleep (SWS). The neuronal mechanism by which activation of NAc A2AR neurons induces SWS, however, is unknown. We hypothesized that the ability of NAc activation to induce sleep is mediated by the classic somnogen adenosine, which can be formed by various processes in all types of cells. Here, to investigate whether astrocytes are involved in the ability of the NAc to regulate SWS, we ablated glial fibrillary acidic protein (GFAP)-positive cells in the NAc core of mice by virus-mediated expression of diphtheria toxin (DT) receptors and intraperitoneal administration of DT. Analysis of electroencephalogram and electromyogram recordings of DT-treated wild-type mice revealed that SWS was remarkably increased at 1 week after DT treatment, whereas sleep-wake behavior was unchanged in DT-treated A2AR knockout mice. Cell ablation was associated with an increased number of GFAP-positive cells and activation of microglia in the NAc. In-vivo microdialysis revealed significantly increased levels of extracellular adenosine in the NAc at 1 week after DT treatment. Our findings suggest that elevated adenosine levels in the NAc core promote SWS by acting on A2ARs and provide the first evidence that adenosine is an endogenous candidate for activating NAc A2AR neurons that have the ability to induce SWS.
Collapse
Affiliation(s)
- Xuzhao Zhou
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan; Doctoral Program of Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yo Oishi
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yoan Cherasse
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Mustafa Korkutata
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan; PhD Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Ibaraki, 305-0005, Japan
| | - Shinya Fujii
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan; Doctoral Program of Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Chia-Ying Lee
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan; PhD Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, Tsukuba, Ibaraki, 305-0005, Japan
| | - Michael Lazarus
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan.
| |
Collapse
|
33
|
Paulose JK, Wang C, O'Hara BF, Cassone VM. The effects of aging on sleep parameters in a healthy, melatonin-competent mouse model. Nat Sci Sleep 2019; 11:113-121. [PMID: 31496853 PMCID: PMC6697669 DOI: 10.2147/nss.s214423] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 06/24/2019] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Sleep disturbances are common maladies associated with human age. Sleep duration is decreased, sleep fragmentation is increased, and the timing of sleep onset and sleep offset is earlier. These disturbances have been associated with several neurodegenerative diseases. Mouse models for human sleep disturbances can be powerful due to the accessibility to neuroscientific and genetic approaches, but these are hampered by the fact that most mouse models employed in sleep research have spontaneous mutations in the biosynthetic pathway(s) regulating the rhythmic production of the pineal hormone melatonin, which has been implicated in human sleep. PURPOSE AND METHOD The present study employed a non-invasive piezoelectric measure of sleep wake cycles in young, middle-aged and old CBA mice, a strain capable of melatonin biosynthesis, to investigate naturally-occurring changes in sleep and circadian parameters as the result of aging. RESULTS The results indicate that young mice sleep less than do middle-aged or aged mice, especially during the night, while the timing of activity onset and acrophase is delayed in aged mice compared to younger mice. CONCLUSION These data point to an effect of aging on the quality and timing of sleep in these mice but also that there are fundamental differences between control of sleep in humans and in laboratory mice.
Collapse
Affiliation(s)
- Jiffin K Paulose
- Department of Biology, University of Kentucky, Lexington, KY 40515, USA
| | - Chanung Wang
- Department of Biology, University of Kentucky, Lexington, KY 40515, USA.,Department of Neurology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Bruce F O'Hara
- Department of Biology, University of Kentucky, Lexington, KY 40515, USA
| | - Vincent M Cassone
- Department of Biology, University of Kentucky, Lexington, KY 40515, USA
| |
Collapse
|
34
|
Transient disruption of mouse home cage activities and assessment of orexin immunoreactivity following concussive- or blast-induced brain injury. Brain Res 2018; 1700:138-151. [DOI: 10.1016/j.brainres.2018.08.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/29/2018] [Accepted: 08/30/2018] [Indexed: 11/21/2022]
|
35
|
Chronic Upregulation of Cleaved-Caspase-3 Associated with Chronic Myelin Pathology and Microvascular Reorganization in the Thalamus after Traumatic Brain Injury in Rats. Int J Mol Sci 2018; 19:ijms19103151. [PMID: 30322151 PMCID: PMC6214127 DOI: 10.3390/ijms19103151] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 12/14/2022] Open
Abstract
Traumatic brain injury (TBI) is associated with long-term disabilities and devastating chronic neurological complications including problems with cognition, motor function, sensory processing, as well as behavioral deficits and mental health problems such as anxiety, depression, personality change and social unsuitability. Clinical data suggest that disruption of the thalamo-cortical system including anatomical and metabolic changes in the thalamus following TBI might be responsible for some chronic neurological deficits following brain trauma. Detailed mechanisms of these pathological processes are not completely understood. The goal of this study was to evaluate changes in the thalamus following TBI focusing on cleaved-caspase-3, a specific effector of caspase pathway activation and myelin and microvascular pathologies using immuno- and histochemistry at different time points from 24 h to 3 months after controlled cortical impact (CCI) in adult Sprague-Dawley rats. Significant increases in cleaved-caspase-3 immunoreactivity in the thalamus were observed starting one month and persisting for at least three months following experimental TBI. Further, the study demonstrated an association of cleaved-caspase-3 with the demyelination of neuronal processes and tissue degeneration in the gray matter in the thalamus, as reflected in alterations of myelinated fiber integrity (luxol fast blue) and decreases in myelin basic protein (MBP) immunoreactivity. The immunofluorescent counterstaining of cleaved-caspase-3 with endothelial barrier antigen (EBA), a marker of blood-brain barrier, revealed limited direct and indirect associations of cleaved caspase-3 with blood-brain barrier damage. These results demonstrate for the first time a significant chronic upregulation of cleaved-caspase-3 in selected thalamic regions associated with cortical regions directly affected by CCI injury. Further, our study is also the first to report that significant upregulation of cleaved-caspase-3 in selected ipsilateral thalamic regions is associated with microvascular reorganization reflected in the significant increases in the number of microvessels with blood-brain barrier alterations detected by EBA staining. These findings provide new insights into potential mechanisms of TBI cell death involving chronic activation of caspase-3 associated with disrupted cortico-thalamic and thalamo-cortical connectivity. Moreover, this study offers the initial evidence that this upregulation of activated caspase-3, delayed degeneration of myelinated nerve fibers and microvascular reorganization with impaired blood-brain barrier integrity in the thalamus might represent reciprocal pathological processes affecting neuronal networks and brain function at the chronic stages of TBI.
Collapse
|
36
|
Rowe RK, Harrison JL, Zhang H, Bachstetter AD, Hesson DP, O'Hara BF, Greene MI, Lifshitz J. Novel TNF receptor-1 inhibitors identified as potential therapeutic candidates for traumatic brain injury. J Neuroinflammation 2018; 15:154. [PMID: 29789012 PMCID: PMC5964690 DOI: 10.1186/s12974-018-1200-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/13/2018] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Traumatic brain injury (TBI) begins with the application of mechanical force to the head or brain, which initiates systemic and cellular processes that are hallmarks of the disease. The pathological cascade of secondary injury processes, including inflammation, can exacerbate brain injury-induced morbidities and thus represents a plausible target for pharmaceutical therapies. We have pioneered research on post-traumatic sleep, identifying that injury-induced sleep lasting for 6 h in brain-injured mice coincides with increased cortical levels of inflammatory cytokines, including tumor necrosis factor (TNF). Here, we apply post-traumatic sleep as a physiological bio-indicator of inflammation. We hypothesized the efficacy of novel TNF receptor (TNF-R) inhibitors could be screened using post-traumatic sleep and that these novel compounds would improve functional recovery following diffuse TBI in the mouse. METHODS Three inhibitors of TNF-R activation were synthesized based on the structure of previously reported TNF CIAM inhibitor F002, which lodges into a defined TNFR1 cavity at the TNF-binding interface, and screened for in vitro efficacy of TNF pathway inhibition (IκB phosphorylation). Compounds were screened for in vivo efficacy in modulating post-traumatic sleep. Compounds were then tested for efficacy in improving functional recovery and verification of cellular mechanism. RESULTS Brain-injured mice treated with Compound 7 (C7) or SGT11 slept significantly less than those treated with vehicle, suggesting a therapeutic potential to target neuroinflammation. SGT11 restored cognitive, sensorimotor, and neurological function. C7 and SGT11 significantly decreased cortical inflammatory cytokines 3 h post-TBI. CONCLUSIONS Using sleep as a bio-indicator of TNF-R-dependent neuroinflammation, we identified C7 and SGT11 as potential therapeutic candidates for TBI.
Collapse
Affiliation(s)
- Rachel K Rowe
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA. .,Department of Child Health, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA. .,Phoenix Veteran Affairs Healthcare System, Phoenix, AZ, USA.
| | - Jordan L Harrison
- Basic Medical Sciences, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| | - Hongtao Zhang
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Adam D Bachstetter
- Sanders-Brown Center on Aging, Spinal Cord and Brain Injury Research Center, and Department of Neuroscience, University of Kentucky, Lexington, KY, USA
| | - David P Hesson
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Bruce F O'Hara
- Department of Biology, University of Kentucky, Lexington, KY, USA
| | - Mark I Greene
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA.,Department of Child Health, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA.,Phoenix Veteran Affairs Healthcare System, Phoenix, AZ, USA.,Basic Medical Sciences, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
| |
Collapse
|
37
|
Elliott JE, De Luche SE, Churchill MJ, Moore C, Cohen AS, Meshul CK, Lim MM. Dietary therapy restores glutamatergic input to orexin/hypocretin neurons after traumatic brain injury in mice. Sleep 2018; 41:4791165. [PMID: 29315422 PMCID: PMC6454530 DOI: 10.1093/sleep/zsx212] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 10/27/2017] [Indexed: 02/06/2023] Open
Abstract
Study Objectives In previous work, dietary branched-chain amino acid (BCAA) supplementation, precursors to de novo glutamate and γ-aminobutyric acid (GABA) synthesis, restored impaired sleep-wake regulation and orexin neuronal activity following traumatic brain injury (TBI) in mice. TBI was speculated to reduce orexin neuronal activity through decreased regional excitatory (glutamate) and/or increased inhibitory (GABA) input. Therefore, we hypothesized that TBI would decrease synaptic glutamate and/or increase synaptic GABA in nerve terminals contacting orexin neurons, and BCAA supplementation would restore TBI-induced changes in synaptic glutamate and/or GABA. Methods Brain tissue was processed for orexin pre-embed diaminobenzidine labeling and glutamate or GABA postembed immunogold labeling. The density of glutamate and GABA immunogold within presynaptic nerve terminals contacting orexin-positive lateral hypothalamic neurons was quantified using electron microscopy in three groups of mice (n = 8 per group): Sham/noninjured controls, TBI without BCAA supplementation, and TBI with BCAA supplementation (given for 5 days, 48 hr post-TBI). Glutamate and GABA were also quantified within the cortical penumbral region (layer VIb) adjacent to the TBI lesion. Results In the hypothalamus and cortex, TBI decreased relative glutamate density in presynaptic terminals making axodendritic contacts. However, BCAA supplementation only restored relative glutamate density within presynaptic terminals contacting orexin-positive hypothalamic neurons. BCAA supplementation did not change relative glutamate density in presynaptic terminals making axosomatic contacts, or relative GABA density in presynaptic terminals making axosomatic or axodendritic contacts, within either the hypothalamus or cortex. Conclusions These results suggest TBI compromises orexin neuron function via decreased glutamate density and highlight BCAA supplementation as a potential therapy to restore glutamate density to orexin neurons.
Collapse
Affiliation(s)
- Jonathan E Elliott
- VA Portland Health Care System, Portland, OR
- Department of Neurology, Oregon Health and Science University, Portland, OR
| | | | | | - Cindy Moore
- VA Portland Health Care System, Portland, OR
| | - Akiva S Cohen
- Department of Anesthesiology and Critical Care Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
- Department of Anesthesiology, Joseph Stokes Research Institute, Children’s Hospital of Philadelphia, Philadelphia, PA
| | - Charles K Meshul
- VA Portland Health Care System, Portland, OR
- Department of Behavioral Neuroscience and Pathology, Oregon Health and Science University, Portland, OR
| | - Miranda M Lim
- VA Portland Health Care System, Portland, OR
- Department of Neurology, Oregon Health and Science University, Portland, OR
- Department of Medicine and Behavioral Neuroscience, Oregon Institute of Occupational Health Sciences, Oregon Health and Science University, Portland, OR
| |
Collapse
|
38
|
Borniger JC, Ungerleider K, Zhang N, Karelina K, Magalang UJ, Weil ZM. Repetitive Brain Injury of Juvenile Mice Impairs Environmental Enrichment-Induced Modulation of REM Sleep in Adulthood. Neuroscience 2018; 375:74-83. [PMID: 29432885 DOI: 10.1016/j.neuroscience.2018.01.064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
Abstract
Traumatic brain injuries (TBIs) are a common and costly ongoing public health concern. Injuries that occur during childhood development can have particularly profound and long-lasting effects. One common consequence and potential mediator of negative outcomes of TBI is sleep disruption which occurs in a substantial proportion of TBI patients. These individuals report greater incidences of insomnia and sleep fragmentation combined with a greater overall sleep requirement meaning that many patients are chronically sleep-deprived. We sought to develop an animal model of developmental TBI-induced sleep dysfunction. Specifically, we tested the hypothesis that early (postnatal day 21), repeated closed head injuries in Swiss-Webster mice, would impair basal and homeostatic sleep responses in adulthood. Further, we asked whether environmental enrichment (EE), a manipulation that improves functional recovery following TBI and has been shown to alter sleep physiology, would prevent TBI-induced sleep dysfunction and alter sleep-modulatory peptide expression. In contrast to our hypothesis, the mild, repeated head injury that we used did not significantly alter basal or homeostatic sleep responses in mice housed in standard laboratory conditions. Sham-injured mice housed in enriched environments exhibited enhanced rapid eye movement (REM) sleep and expression of the REM-promoting peptide pro-melanin-concentrating hormone, an effect that was not apparent in TBI mice housed in enriched environments. Thus, TBI blocked the REM-enhancing effects of EE. This work has important implications for the management and rehabilitation of the TBI patient population.
Collapse
Affiliation(s)
- Jeremy C Borniger
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Neuroscience Research Institute, Center for Brain and Spinal Cord Repair, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Kyra Ungerleider
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Neuroscience Research Institute, Center for Brain and Spinal Cord Repair, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Ning Zhang
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Neuroscience Research Institute, Center for Brain and Spinal Cord Repair, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Kate Karelina
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Neuroscience Research Institute, Center for Brain and Spinal Cord Repair, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Ulysses J Magalang
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Zachary M Weil
- Department of Neuroscience, Behavioral Neuroendocrinology Group, Neuroscience Research Institute, Center for Brain and Spinal Cord Repair, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
| |
Collapse
|
39
|
Implantation of Neuronal Stem Cells Enhances Object Recognition without Increasing Neurogenesis after Lateral Fluid Percussion Injury in Mice. Stem Cells Int 2018. [PMID: 29531536 PMCID: PMC5818962 DOI: 10.1155/2018/4209821] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cognitive deficits after traumatic brain injury (TBI) are debilitating and contribute to the morbidity and loss of productivity of over 10 million people worldwide. Cell transplantation has been linked to enhanced cognitive function after experimental traumatic brain injury, yet the mechanism of recovery is poorly understood. Since the hippocampus is a critical structure for learning and memory, supports adult neurogenesis, and is particularly vulnerable after TBI, we hypothesized that stem cell transplantation after TBI enhances cognitive recovery by modulation of endogenous hippocampal neurogenesis. We performed lateral fluid percussion injury (LFPI) in adult mice and transplanted embryonic stem cell-derived neural progenitor cells (NPC). Our data confirm an injury-induced cognitive deficit in novel object recognition, a hippocampal-dependent learning task, which is reversed one week after NPC transplantation. While LFPI alone promotes hippocampal neurogenesis, as revealed by doublecortin immunolabeling of immature neurons, subsequent NPC transplantation prevents increased neurogenesis and is not associated with morphological maturation of endogenous injury-induced immature neurons. Thus, NPC transplantation enhances cognitive recovery early after LFPI without a concomitant increase in neuron numbers or maturation.
Collapse
|
40
|
Noain D, Büchele F, Schreglmann SR, Valko PO, Gavrilov YV, Morawska MM, Imbach LL, Baumann CR. Increased Sleep Need and Reduction of Tuberomammillary Histamine Neurons after Rodent Traumatic Brain Injury. J Neurotrauma 2018; 35:85-93. [DOI: 10.1089/neu.2017.5067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Daniela Noain
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Fabian Büchele
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Sebastian R. Schreglmann
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Philipp O. Valko
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Yuri V. Gavrilov
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Marta M. Morawska
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Lukas L. Imbach
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| | - Christian R. Baumann
- Department of Neurology, University Hospital of Zurich, University of Zurich, Zurich, Switzerland
| |
Collapse
|
41
|
Sandsmark DK, Elliott JE, Lim MM. Sleep-Wake Disturbances After Traumatic Brain Injury: Synthesis of Human and Animal Studies. Sleep 2017; 40:3074241. [PMID: 28329120 PMCID: PMC6251652 DOI: 10.1093/sleep/zsx044] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2017] [Indexed: 12/23/2022] Open
Abstract
Sleep-wake disturbances following traumatic brain injury (TBI) are increasingly recognized as a serious consequence following injury and as a barrier to recovery. Injury-induced sleep-wake disturbances can persist for years, often impairing quality of life. Recently, there has been a nearly exponential increase in the number of primary research articles published on the pathophysiology and mechanisms underlying sleep-wake disturbances after TBI, both in animal models and in humans, including in the pediatric population. In this review, we summarize over 200 articles on the topic, most of which were identified objectively using reproducible online search terms in PubMed. Although these studies differ in terms of methodology and detailed outcomes; overall, recent research describes a common phenotype of excessive daytime sleepiness, nighttime sleep fragmentation, insomnia, and electroencephalography spectral changes after TBI. Given the heterogeneity of the human disease phenotype, rigorous translation of animal models to the human condition is critical to our understanding of the mechanisms and of the temporal course of sleep-wake disturbances after injury. Arguably, this is most effectively accomplished when animal and human studies are performed by the same or collaborating research programs. Given the number of symptoms associated with TBI that are intimately related to, or directly stem from sleep dysfunction, sleep-wake disorders represent an important area in which mechanistic-based therapies may substantially impact recovery after TBI.
Collapse
Affiliation(s)
| | - Jonathan E Elliott
- VA Portland Health Care System, Portland, OR
- Department of Neurology, Oregon Health & Science University, Portland, OR
| | - Miranda M Lim
- VA Portland Health Care System, Portland, OR
- Department of Neurology, Oregon Health & Science University, Portland, OR
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR; Department of Behavioral Neuroscience, Oregon Institute of Occupational Health Sciences, Oregon Health & Science University, Portland, OR
| |
Collapse
|
42
|
Lifshitz J, Rowe RK, Griffiths DR, Evilsizor MN, Thomas TC, Adelson PD, McIntosh TK. Clinical relevance of midline fluid percussion brain injury: Acute deficits, chronic morbidities and the utility of biomarkers. Brain Inj 2016; 30:1293-1301. [PMID: 27712117 DOI: 10.1080/02699052.2016.1193628] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND After 30 years of characterisation and implementation, fluid percussion injury (FPI) is firmly recognised as one of the best-characterised reproducible and clinically relevant models of TBI, encompassing concussion through diffuse axonal injury (DAI). Depending on the specific injury parameters (e.g. injury site, mechanical force), FPI can model diffuse TBI with or without a focal component and may be designated as mild-to-severe according to the chosen mechanical forces and resulting acute neurological responses. Among FPI models, midline FPI may best represent clinical diffuse TBI, because of the acute behavioural deficits, the transition to late-onset behavioural morbidities and the absence of gross histopathology. REVIEW The goal here was to review acute and chronic physiological and behavioural deficits and morbidities associated with diffuse TBI induced by midline FPI. In the absence of neurodegenerative sequelae associated with focal injury, there is a need for biomarkers in the diagnostic, prognostic, predictive and therapeutic approaches to evaluate outcomes from TBI. CONCLUSIONS The current literature suggests that midline FPI offers a clinically-relevant, validated model of diffuse TBI to investigators wishing to evaluate novel therapeutic strategies in the treatment of TBI and the utility of biomarkers in the delivery of healthcare to patients with brain injury.
Collapse
Affiliation(s)
- Jonathan Lifshitz
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA.,c Phoenix VA Healthcare System , Phoenix , AZ , USA.,d Neuroscience Graduate Program , Arizona State University , Tempe , AZ , USA
| | - Rachel K Rowe
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA.,c Phoenix VA Healthcare System , Phoenix , AZ , USA
| | - Daniel R Griffiths
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA
| | - Megan N Evilsizor
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA
| | - Theresa C Thomas
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA.,c Phoenix VA Healthcare System , Phoenix , AZ , USA.,d Neuroscience Graduate Program , Arizona State University , Tempe , AZ , USA
| | - P David Adelson
- a Translational Neurotrauma Research Program , BARROW Neurological Institute at Phoenix Children's Hospital , Phoenix , AZ , USA.,b Department of Child Health , University of Arizona, College of Medicine - Phoenix , Phoenix , AZ , USA.,d Neuroscience Graduate Program , Arizona State University , Tempe , AZ , USA
| | | |
Collapse
|
43
|
Rowe RK, Ziebell JM, Harrison JL, Law LM, Adelson PD, Lifshitz J. Aging with Traumatic Brain Injury: Effects of Age at Injury on Behavioral Outcome following Diffuse Brain Injury in Rats. Dev Neurosci 2016; 38:195-205. [PMID: 27449121 DOI: 10.1159/000446773] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/12/2016] [Indexed: 11/19/2022] Open
Abstract
Development and aging are influenced by external factors with the potential to impact health throughout the life span. Traumatic brain injury (TBI) can initiate and sustain a lifetime of physical and mental health symptoms. Over 1.7 million TBIs occur annually in the USA alone, with epidemiology suggesting a higher incidence for young age groups. Additionally, increasing life spans mean more years to age with TBI. While there is ongoing research of experimental pediatric and adult TBI, few studies to date have incorporated animal models of pediatric, adolescent, and adult TBI to understand the role of age at injury across the life span. Here, we explore repeated behavioral performance between rats exposed to diffuse TBI at five different ages. Our aim was to follow neurological morbidities across the rodent life span with respect to age at injury. A single cohort of male Sprague-Dawley rats (n = 69) was received at postnatal day (PND) 10. Subgroups of this cohort (n = 11-12/group) were subjected to a single moderate midline fluid percussion injury at age PND 17, PND 35, 2 months, 4 months, or 6 months. A control group of naïve rats (n = 12) was assembled from this cohort. The entire cohort was assessed for motor function by beam walk at 1.5, 3, 5, and 7 months of age. Anxiety-like behavior was assessed with the open field test at 8 months of age. Cognitive performance was assessed using the novel object location task at 8, 9, and 10 months of age. Depression-like behavior was assessed using the forced swim test at 10 months of age. Age at injury and time since injury differentially influenced motor, cognitive, and affective behavioral outcomes. Motor and cognitive deficits occurred in rats injured at earlier developmental time points, but not in rats injured in adulthood. In contrast, rats injured during adulthood showed increased anxiety-like behavior compared to uninjured control rats. A single diffuse TBI did not result in chronic depression-like behaviors or changes in body weight among any groups. The interplay of age at injury and aging with an injury are translationally important factors that influence behavioral performance as a quality of life metric. More complete understanding of these factors can direct rehabilitative efforts and personalized medicine for TBI survivors.
Collapse
Affiliation(s)
- Rachel K Rowe
- Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, Ariz., USA
| | | | | | | | | | | |
Collapse
|
44
|
Wiseman-Hakes C, Duclos C, Blais H, Dumont M, Bernard F, Desautels A, Menon DK, Gilbert D, Carrier J, Gosselin N. Sleep in the Acute Phase of Severe Traumatic Brain Injury. Neurorehabil Neural Repair 2016; 30:713-21. [DOI: 10.1177/1545968315619697] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Objectives. The onset of pervasive sleep-wake disturbances associated with traumatic brain injury (TBI) is poorly understood. This study aimed to ( a) determine the feasibility of using polysomnography in patients in the acute, hospitalized stage of severe TBI and ( b) explore sleep quality and sleep architecture during this stage of recovery, compared to patients with other traumatic injuries. Methods. A cross-sectional case-control design was used. We examined the sleep of 7 patients with severe TBI (17-47 years; 20.3 ± 15.0 days postinjury) and 6 patients with orthopedic and/or spinal cord injuries (OSCI; 19-58 years; 16.9 ± 4.9 days postinjury). One night of ambulatory polysomnography was performed at bedside. Results. Compared to OSCI patients, TBI patients showed a significantly longer duration of nocturnal sleep and earlier nighttime sleep onset. Sleep efficiency was low and comparable in both groups. All sleep stages were observed in both groups with normal proportions according to age. Conclusion. Patients in the acute stage of severe TBI exhibit increased sleep duration and earlier sleep onset, suggesting that the injured brain enhances sleep need and/or decreases the ability to maintain wakefulness. As poor sleep efficiency could compromise brain recovery, further studies should investigate whether strategies known to optimize sleep in healthy individuals are efficacious in acute TBI. While there are several inherent challenges, polysomnography is a useful means of examining sleep in the early stage of recovery in patients with severe TBI.
Collapse
Affiliation(s)
- Catherine Wiseman-Hakes
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Catherine Duclos
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Hélène Blais
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
| | - Marie Dumont
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Francis Bernard
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Alex Desautels
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | | | - Danielle Gilbert
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Julie Carrier
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| | - Nadia Gosselin
- Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada
- Université de Montréal, Montreal, Quebec, Canada
| |
Collapse
|
45
|
Büchele F, Morawska MM, Schreglmann SR, Penner M, Muser M, Baumann CR, Noain D. Novel Rat Model of Weight Drop-Induced Closed Diffuse Traumatic Brain Injury Compatible with Electrophysiological Recordings of Vigilance States. J Neurotrauma 2016; 33:1171-80. [DOI: 10.1089/neu.2015.4001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Fabian Büchele
- Department of Neurology, University Hospital of Zurich, Zurich, Switzerland
| | - Marta M. Morawska
- Department of Neurology, University Hospital of Zurich, Zurich, Switzerland
- Neuroscience Centre Zurich ZNZ, University of Zurich, Zurich, Switzerland
| | | | - Marco Penner
- Department of Neurology, University Hospital of Zurich, Zurich, Switzerland
| | - Markus Muser
- Working Group on Accident Mechanics, Swiss Federal Institute of Technology, Zurich, Switzerland
| | | | - Daniela Noain
- Department of Neurology, University Hospital of Zurich, Zurich, Switzerland
| |
Collapse
|
46
|
Rowe RK, Ellis GI, Harrison JL, Bachstetter AD, Corder GF, Van Eldik LJ, Taylor BK, Marti F, Lifshitz J. Diffuse traumatic brain injury induces prolonged immune dysregulation and potentiates hyperalgesia following a peripheral immune challenge. Mol Pain 2016; 12:12/0/1744806916647055. [PMID: 27178244 PMCID: PMC4955995 DOI: 10.1177/1744806916647055] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/30/2016] [Indexed: 01/09/2023] Open
Abstract
Background Nociceptive and neuropathic pain occurs as part of the disease process after traumatic brain injury (TBI) in humans. Central and peripheral inflammation, a major secondary injury process initiated by the traumatic brain injury event, has been implicated in the potentiation of peripheral nociceptive pain. We hypothesized that the inflammatory response to diffuse traumatic brain injury potentiates persistent pain through prolonged immune dysregulation. Results To test this, adult, male C57BL/6 mice were subjected to midline fluid percussion brain injury or to sham procedure. One cohort of mice was analyzed for inflammation-related cytokine levels in cortical biopsies and serum along an acute time course. In a second cohort, peripheral inflammation was induced seven days after surgery/injury with an intraplantar injection of carrageenan. This was followed by measurement of mechanical hyperalgesia, glial fibrillary acidic protein and Iba1 immunohistochemical analysis of neuroinflammation in the brain, and flow cytometric analysis of T-cell differentiation in mucosal lymph. Traumatic brain injury increased interleukin-6 and chemokine ligand 1 levels in the cortex and serum that peaked within 1–9 h and then resolved. Intraplantar carrageenan produced mechanical hyperalgesia that was potentiated by traumatic brain injury. Further, mucosal T cells from brain-injured mice showed a distinct deficiency in the ability to differentiate into inflammation-suppressing regulatory T cells (Tregs). Conclusions We conclude that traumatic brain injury increased the inflammatory pain associated with cutaneous inflammation by contributing to systemic immune dysregulation. Regulatory T cells are immune suppressors and failure of T cells to differentiate into regulatory T cells leads to unregulated cytokine production which may contribute to the potentiation of peripheral pain through the excitation of peripheral sensory neurons. In addition, regulatory T cells are identified as a potential target for therapeutic rebalancing of peripheral immune homeostasis to improve functional outcome and decrease the incidence of peripheral inflammatory pain following traumatic brain injury.
Collapse
Affiliation(s)
- Rachel K Rowe
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA Phoenix Veteran Affairs Healthcare System, Phoenix, AZ, USA
| | - Gavin I Ellis
- Department of Microbiology, Immunology & Molecular Genetics, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Jordan L Harrison
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA Arizona State University, Tempe, AZ, USA
| | - Adam D Bachstetter
- Department of Anatomy & Neurobiology, University of Kentucky College of Medicine, Lexington, KY, USA Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Gregory F Corder
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Linda J Van Eldik
- Department of Anatomy & Neurobiology, University of Kentucky College of Medicine, Lexington, KY, USA Sanders-Brown Center on Aging, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Bradley K Taylor
- Department of Physiology, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Francesc Marti
- Department of Microbiology, Immunology & Molecular Genetics, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Jonathan Lifshitz
- BARROW Neurological Institute at Phoenix Children's Hospital, Phoenix, AZ, USA Department of Child Health, University of Arizona College of Medicine - Phoenix, Phoenix, AZ, USA Phoenix Veteran Affairs Healthcare System, Phoenix, AZ, USA Arizona State University, Tempe, AZ, USA
| |
Collapse
|
47
|
Thomasy HE, Febinger HY, Ringgold KM, Gemma C, Opp MR. Hypocretinergic and cholinergic contributions to sleep-wake disturbances in a mouse model of traumatic brain injury. Neurobiol Sleep Circadian Rhythms 2016; 2:71-84. [PMID: 31236496 PMCID: PMC6575582 DOI: 10.1016/j.nbscr.2016.03.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/25/2016] [Accepted: 03/28/2016] [Indexed: 12/24/2022] Open
Abstract
Disorders of sleep and wakefulness occur in the majority of individuals who have experienced traumatic brain injury (TBI), with increased sleep need and excessive daytime sleepiness often reported. Behavioral and pharmacological therapies have limited efficacy, in part, because the etiology of post-TBI sleep disturbances is not well understood. Severity of injuries resulting from head trauma in humans is highly variable, and as a consequence so are their sequelae. Here, we use a controlled laboratory model to investigate the effects of TBI on sleep-wake behavior and on candidate neurotransmitter systems as potential mediators. We focus on hypocretin and melanin-concentrating hormone (MCH), hypothalamic neuropeptides important for regulating sleep and wakefulness, and two potential downstream effectors of hypocretin actions, histamine and acetylcholine. Adult male C57BL/6 mice (n=6-10/group) were implanted with EEG recording electrodes and baseline recordings were obtained. After baseline recordings, controlled cortical impact was used to induce mild or moderate TBI. EEG recordings were obtained from the same animals at 7 and 15 days post-surgery. Separate groups of animals (n=6-8/group) were used to determine effects of TBI on the numbers of hypocretin and MCH-producing neurons in the hypothalamus, histaminergic neurons in the tuberomammillary nucleus, and cholinergic neurons in the basal forebrain. At 15 days post-TBI, wakefulness was decreased and NREM sleep was increased during the dark period in moderately injured animals. There were no differences between groups in REM sleep time, nor were there differences between groups in sleep during the light period. TBI effects on hypocretin and cholinergic neurons were such that more severe injury resulted in fewer cells. Numbers of MCH neurons and histaminergic neurons were not altered under the conditions of this study. Thus, we conclude that moderate TBI in mice reduces wakefulness and increases NREM sleep during the dark period, effects that may be mediated by hypocretin-producing neurons and/or downstream cholinergic effectors in the basal forebrain.
Collapse
Affiliation(s)
- Hannah E Thomasy
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, United States
| | - Heidi Y Febinger
- Department of Anesthesiology & Pain Medicine, University of Washington, Seattle, WA, United States
| | - Kristyn M Ringgold
- Department of Anesthesiology & Pain Medicine, University of Washington, Seattle, WA, United States
| | - Carmelina Gemma
- Department of Anesthesiology & Pain Medicine, University of Washington, Seattle, WA, United States
| | - Mark R Opp
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, United States.,Department of Anesthesiology & Pain Medicine, University of Washington, Seattle, WA, United States
| |
Collapse
|
48
|
Qu W, Liu NK, Xie XMS, Li R, Xu XM. Automated monitoring of early neurobehavioral changes in mice following traumatic brain injury. Neural Regen Res 2016; 11:248-56. [PMID: 27073377 PMCID: PMC4810988 DOI: 10.4103/1673-5374.177732] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury often causes a variety of behavioral and emotional impairments that can develop into chronic disorders. Therefore, there is a need to shift towards identifying early symptoms that can aid in the prediction of traumatic brain injury outcomes and behavioral endpoints in patients with traumatic brain injury after early interventions. In this study, we used the SmartCage system, an automated quantitative approach to assess behavior alterations in mice during an early phase of traumatic brain injury in their home cages. Female C57BL/6 adult mice were subjected to moderate controlled cortical impact (CCI) injury. The mice then received a battery of behavioral assessments including neurological score, locomotor activity, sleep/wake states, and anxiety-like behaviors on days 1, 2, and 7 after CCI. Histological analysis was performed on day 7 after the last assessment. Spontaneous activities on days 1 and 2 after injury were significantly decreased in the CCI group. The average percentage of sleep time spent in both dark and light cycles were significantly higher in the CCI group than in the sham group. For anxiety-like behaviors, the time spent in a light compartment and the number of transitions between the dark/light compartments were all significantly reduced in the CCI group than in the sham group. In addition, the mice suffering from CCI exhibited a preference of staying in the dark compartment of a dark/light cage. The CCI mice showed reduced neurological score and histological abnormalities, which are well correlated to the automated behavioral assessments. Our findings demonstrate that the automated SmartCage system provides sensitive and objective measures for early behavior changes in mice following traumatic brain injury.
Collapse
Affiliation(s)
- Wenrui Qu
- Hand & Foot Surgery and Reparative & Reconstructive Surgery Center, Orthopaedic Hospital of the Second Hospital of Jilin University, Changchun, Jilin Province, China; Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, USA; Goodman Campbell Brain and Spine, Indianapolis, IN, USA
| | - Nai-Kui Liu
- Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, USA; Goodman Campbell Brain and Spine, Indianapolis, IN, USA
| | | | - Rui Li
- Hand & Foot Surgery and Reparative & Reconstructive Surgery Center, Orthopaedic Hospital of the Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xiao-Ming Xu
- Spinal Cord and Brain Injury Research Group, Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Neurological Surgery, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Anatomy and Cell Biology, Indiana University School of Medicine, Indianapolis, IN, USA; Goodman Campbell Brain and Spine, Indianapolis, IN, USA
| |
Collapse
|
49
|
Ekmark-Lewén S, Flygt J, Fridgeirsdottir GA, Kiwanuka O, Hånell A, Meyerson BJ, Mir AK, Gram H, Lewén A, Clausen F, Hillered L, Marklund N. Diffuse traumatic axonal injury in mice induces complex behavioural alterations that are normalized by neutralization of interleukin-1β. Eur J Neurosci 2016; 43:1016-33. [PMID: 27091435 DOI: 10.1111/ejn.13190] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 01/06/2016] [Accepted: 01/26/2016] [Indexed: 12/15/2022]
Abstract
Widespread traumatic axonal injury (TAI) results in brain network dysfunction, which commonly leads to persisting cognitive and behavioural impairments following traumatic brain injury (TBI). TBI induces a complex neuroinflammatory response, frequently located at sites of axonal pathology. The role of the pro-inflammatory cytokine interleukin (IL)-1β has not been established in TAI. An IL-1β-neutralizing or a control antibody was administered intraperitoneally at 30 min following central fluid percussion injury (cFPI), a mouse model of widespread TAI. Mice subjected to moderate cFPI (n = 41) were compared with sham-injured controls (n = 20) and untreated, naive mice (n = 9). The anti-IL-1β antibody reached the target brain regions in adequate therapeutic concentrations (up to ~30 μg/brain tissue) at 24 h post-injury in both cFPI (n = 5) and sham-injured (n = 3) mice, with lower concentrations at 72 h post-injury (up to ~18 μg/g brain tissue in three cFPI mice). Functional outcome was analysed with the multivariate concentric square field (MCSF) test at 2 and 9 days post-injury, and the Morris water maze (MWM) at 14-21 days post-injury. Following TAI, the IL-1β-neutralizing antibody resulted in an improved behavioural outcome, including normalized behavioural profiles in the MCSF test. The performance in the MWM probe (memory) trial was improved, although not in the learning trials. The IL-1β-neutralizing treatment did not influence cerebral ventricle size or the number of microglia/macrophages. These findings support the hypothesis that IL-1β is an important contributor to the processes causing complex cognitive and behavioural disturbances following TAI.
Collapse
Affiliation(s)
- Sara Ekmark-Lewén
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Johanna Flygt
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | | | - Olivia Kiwanuka
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Anders Hånell
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Bengt J Meyerson
- Department of Neuroscience, Pharmacology, Biomedical Centre, Uppsala University, Uppsala, Sweden
| | - Anis K Mir
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | - Hermann Gram
- Novartis Institutes of Biomedical Research, Basel, Switzerland
| | - Anders Lewén
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Fredrik Clausen
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Lars Hillered
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden
| | - Niklas Marklund
- Department of Neuroscience, Neurosurgery, Uppsala University, Uppsala, Sweden.,Department of Neurosurgery, Uppsala University Hospital, Ing 85, 2 tr, SE-756 55, Uppsala, Sweden
| |
Collapse
|
50
|
Bachstetter AD, Zhou Z, Rowe RK, Xing B, Goulding DS, Conley AN, Sompol P, Meier S, Abisambra JF, Lifshitz J, Watterson DM, Van Eldik LJ. MW151 Inhibited IL-1β Levels after Traumatic Brain Injury with No Effect on Microglia Physiological Responses. PLoS One 2016; 11:e0149451. [PMID: 26871438 PMCID: PMC4752278 DOI: 10.1371/journal.pone.0149451] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/31/2016] [Indexed: 12/26/2022] Open
Abstract
A prevailing neuroinflammation hypothesis is that increased production of proinflammatory cytokines contributes to progressive neuropathology, secondary to the primary damage caused by a traumatic brain injury (TBI). In support of the hypothesis, post-injury interventions that inhibit the proinflammatory cytokine surge can attenuate the progressive pathology. However, other post-injury neuroinflammatory responses are key to endogenous recovery responses. Therefore, it is critical that pharmacological attenuation of detrimental or dysregulated neuroinflammatory processes avoid pan-suppression of inflammation. MW151 is a CNS-penetrant, small molecule experimental therapeutic that restores injury- or disease-induced overproduction of proinflammatory cytokines towards homeostasis without immunosuppression. Post-injury administration of MW151 in a closed head injury model of mild TBI suppressed acute cytokine up-regulation and downstream cognitive impairment. Here, we report results from a diffuse brain injury model in mice using midline fluid percussion. Low dose (0.5–5.0 mg/kg) administration of MW151 suppresses interleukin-1 beta (IL-1β) levels in the cortex while sparing reactive microglia and astrocyte responses. To probe molecular mechanisms, we used live cell imaging of the BV-2 microglia cell line to demonstrate that MW151 does not affect proliferation, migration, or phagocytosis of the cells. Our results provide insight into the roles of glial responses to brain injury and indicate the feasibility of using appropriate dosing for selective therapeutic modulation of injurious IL-1β increases while sparing other glial responses to injury.
Collapse
Affiliation(s)
- Adam D. Bachstetter
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, Kentucky, United States of America
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky, United States of America
| | - Zhengqiu Zhou
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Rachel K. Rowe
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, Kentucky, United States of America
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky, United States of America
| | - Bin Xing
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Danielle S. Goulding
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Alyssa N. Conley
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Pradoldej Sompol
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Shelby Meier
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jose F. Abisambra
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
- Department of Physiology, University of Kentucky, University of Kentucky, Lexington, Kentucky, United States of America
| | - Jonathan Lifshitz
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, Kentucky, United States of America
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky, United States of America
| | - D. Martin Watterson
- Department of Pharmacology, Northwestern University, Chicago, Illinois, United States of America
| | - Linda J. Van Eldik
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, Kentucky, United States of America
- Spinal Cord and Brain Injury Research Center (SCoBIRC), University of Kentucky, Lexington, Kentucky, United States of America
- Department of Anatomy and Neurobiology, University of Kentucky, Lexington, Kentucky, United States of America
- * E-mail:
| |
Collapse
|