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Traumatic Brain Injury - Astrophysics Data System

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Last Updated: 18 May 2022

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Time dependent analysis of rat microglial surface markers in traumatic brain injury reveals dynamics of distinct cell subpopulations

We conducted a temporal investigation into the response to controlled cortical stress in rat microglia between ipsilateral and contralateral hemispheres across seven time points, identified microglia, CD46, CD11b/c, and p2y12 receptor, and assessed their activation state using additional markers such as CD32, CD86, RT1B, CD200R, and CD163. Since CCI in two different locations using activation tags, we described longitudinal shifts in microglial populations after CCI, showing clear separation between cellular subpopulations with distinct temporal patterns of markers after injury.

Source link: https://ui.adsabs.harvard.edu/abs/2022NatSR..12.6289G/abstract


Focal lesion size poorly correlates with motor function after experimental traumatic brain injury in mice

Results continue to be poorer than virtually all CatWalk XT® parameters, defiant paw prints, rises, and dynamic movement parameters improved immediately after CCI's first week; however, loss of dynamic single paw parameters persisted up to four weeks. Conclusions as CatWalk XT® parameters do not correlate with focal lesion size after CCI, gait analysis using the CatWalk XT® may provide valuable insight to a solitary histologic examination of the injury site. Although all CatWalk XT® parameters can be used for gait assessments in the first week after CCI, dynamic single paw parameters may be more useful in the ongoing phase after experimental TBI.

Source link: https://ui.adsabs.harvard.edu/abs/2022PLoSO..1765448W/abstract


Comparative efficacy of prophylactic anticonvulsant drugs following traumatic brain injury: A systematic review and network meta-analysis of randomized controlled trials

We reviewed the effects of prophylactic anticonvulsant drug use in patients with traumatic brain injury in a systematic manner. The risk of bias of each study was determined using the Cochrane risk of bias software, and confidence in evidence was determined by confidence in network meta-analysis. Contrast medications reduce early posttraumatic seizures but not late PTS compared to placebo, according to our results. No antiepileptic drug had an effect on early or late PTS compared to another; however, the sensitivity analysis found that phenytoin could stop early PTS. To obtain high-quality data on prophylactic anticonvulsant drug use in patients with traumatic brain injury, additional research with larger sample sizes and a rigorous design is required.

Source link: https://ui.adsabs.harvard.edu/abs/2022PLoSO..1765932W/abstract


"Fluctuation is the norm": Rehabilitation practitioner perspectives on ambiguity and uncertainty in their work with persons in disordered states of consciousness after traumatic brain injury

The aim of this article is to discuss the clinical lifeworld of rehabilitation professionals who work with patients in commotioned states of consciousness following serious traumatic brain injury. We interviewed 21 physicians using narrative interviewing techniques from two specialty health services that welcome patients in DoC to inpatient rehabilitation. Practitioner education, as well as practitioner training, informs taken-for-granted beliefs and organizational structures that may exist in rehabilitation medical and scientific culture, including practitioner training.

Source link: https://ui.adsabs.harvard.edu/abs/2022PLoSO..1767194P/abstract


Histone deacetylase inhibitors are neuroprotective and preserve NGF-mediated cell survival following traumatic brain injury

Long-term cognitive and behavioral disruption has been attributed to acute traumatic brain injury. We investigated the effects and mechanisms associated with HDACi-induced neuroprotection in vitro and a rat TBI model in vivo with known HDACis and a special little-molecule pan-HDACi. Following HDACi treatment, we show that we can maintain sufficient expression of nerve growth factor and activation of the neurotrophic tyrosine receptor type 1 pathway, which is crucial in encouraging CNS cells after TBI. Following TBI, HDACi therapy not only enhanced the expression of the stem cell biomarker nestin but also reduced the expression of reactive astrocyte biomarker GFAP in damaged tissue following TBI. These findings add to the theories that HDACi treatment after TBI is neuroprotective and promotes continued study of HDACis following acute TBI.

Source link: https://ui.adsabs.harvard.edu/abs/2013PNAS..11010747L/abstract


Doxycycline prevents blood-brain barrier dysfunction and microvascular hyperpermeability after traumatic brain injury

Following traumatic brain injury, the primary aim of this research was to determine the cellular and molecular effects of doxycycline on the blood-brain barrier and protection against secondary injuries. Following BBB's dysfunction, microvascular hyperpermeability and cerebral edema have risen, leading to an increase of intracranial pressure, secondary brain ischemia, herniation, and brain death. BBB hyperpermeability is caused by TBI-induced BBB hyperpermeability, and doxycycline has anti-MMP-9 activity. The effect of doxycycline on BBB hyperpermeability was investigated in this paper, as well as in vivo, cell culture-based models of TBI. MMP-9 enzyme expression was determined in mouse brain tissue by postmortem mouse brain tissue. It was discovered that doxycycline bound to the MMP-9 active sites had a binding affinity of 7. 07 kcal/mol. Following TBI treatment, MMP-9 enzyme expression in brain tissue decreased with doxycycline therapy in brain tissue.

Source link: https://ui.adsabs.harvard.edu/abs/2022NatSR..12.5415R/abstract


Decoding health status transitions of over 200 000 patients with traumatic brain injury from preceding injury to the injury event

In Canada, we used computational and data visualization tools to categorize decade-long health records of 235,003 patients with TBI, ranging from previous injury to the injury event itself. TBI transition patterns in TBI increased along with the prediction of comorbidity, showing that many disorders, socioeconomic, and environmental adversities preceding injury are reflected in external causes of injury and injury severity. Multiple body system pathology and advanced age-related brain pathology networks revealed the best links between health status preceding TBI and health status at the injury event.

Source link: https://ui.adsabs.harvard.edu/abs/2022NatSR..12.5584M/abstract


Ribonuclease-1 treatment after traumatic brain injury preserves blood-brain barrier integrity and delays secondary brain damage in mice

Traumatic brain injury includes primary structural injury and delayed secondary injury due to vascular dysfunction and neuroinflammation. Compared to vehicle treatment 24 h and 120 h post-CCI, we tested the likelihood that intraperitoneal injection of Ribonuclease-1 at 30 min and 12 h after controlled-cortical-impact will minimize secondary lesion formation. At 120 h post-CCI, RNase1 also reduced perilesional leukocyte recruitment and microglial activation, but there was no difference in lesion volume at this time and no clinical benefit. RNase1-treatment may be a novel way to postpone brain injury while also extending the window for treatment options after TBI.

Source link: https://ui.adsabs.harvard.edu/abs/2022NatSR..12.5731K/abstract


A systematic review on integrated care for traumatic brain injury, mental health, and substance use

Traumatic brain injuries and opioid use disorders are global public health issues due to their prevalence and effects on individuals and communities. This systematic review found a solid basis for understanding integration of care for people with TBI and MHSU by comprehensively summarizing existing integrated programs and identifying challenges and facilitators of care coordination. This report revealed that integrated TBI and MHSU care already existed in a variety of settings and styles. Given the finite and competing demands for healthcare services, educational enhancements across therapy strategies to facilitate integrated TBI and MHSU care should be considered. The TBI and MHSU can both be investigated by multidisciplinary teams to include education among health professionals so they can be familiar with TBI and MHSU.

Source link: https://ui.adsabs.harvard.edu/abs/2022PLoSO..1764116C/abstract


Changes in alcohol use and mood during the COVID-19 pandemic among individuals with traumatic brain injury: A difference-in-difference study

Objective: To determine the effect of COVID-19 pandemic exposure on changes in alcohol use and mood from years 1 to 2 following traumatic brain injury, a traumatic brain injury was the first. Participants who completed their year 1 post-injury interviews prior to January 1, 2020, and their year 2 interview between April 1, 2020 and January 15, 2021 were included in COVID-19 pandemic risk. We gathered alcohol consumption in any past month, average number of whisky, and last month binge drinking. We surveyed depression using the Patient Health Questionnaire-9, as well as anxiety symptoms using the Generalized Anxiety Disorder-7. Overall, there were no significant changes in depression and anxiety symptoms over time between pandemic exposed and unexposed groups, however, pandemic-exposure Hispanics with TBI reported significant rises in anxiety symptoms from year-1 to year-2 post-injury relative to pandemic-unexposed Hispanics.

Source link: https://ui.adsabs.harvard.edu/abs/2022PLoSO..1766422K/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions