Traumatic brain injury (TBI) causes serious neuronal injury that often leads to death. To date there is no clinically successful treatment strategy that has been reported which offers repair of the brain injury or neural injury. Significant attempts have been made to develop effective therapies for TBI, and one of the most promising approaches is a stem cell based therapeutic approach with mesenchymal stem cells (MSCs). This approach is regarded as having the most potential in regenerative medicine. Toward this venture, the generation and release of exosomes can be attributed to the therapeutic effects of MSCs. Exosomes are nanosized vesicles, carry proteins, lipids, mRNA, and miRNA, and assist in cell-cell communication. Exosomes can interact with brain parenchyma cells and with the neurogenic niche, which can help in neurogenesis and brain remodeling. Exosomes derived from MSCs and human-induced pluripotent stem cells (hiPSCs) can be a promising approach in neuronal injury healing. In this Viewpoint, we discussed the most recent knowledge for exosome therapies for neural injuries and highlighted the major advantages of this therapy.
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Real-world efficacy of transfusion with liberal or restrictive strategy in traumatic brain injury.
Ann Clin Transl Neurol
December 2024
Department of Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
Objective: The short-term efficacy of red blood cell (RBC) transfusion among general traumatic brain injury (TBI) patients is unclear.
Methods: We used the MIMIC database to compare the efficacy of liberal (10 g/dL) versus conservative (7 g/dL) transfusion strategy in TBI patients. The outcomes were neurological progression (decrease of Glasgow coma scale (GCS) of at least 2 points) and death within 28 days of ICU admission.
Identifying predictors of nosocomial pneumonia in trauma patients admitted to a level-1 trauma center.
Arch Orthop Trauma Surg
December 2024
Department of Surgery, University Medical Center Utrecht, PO Box 85500, 3508 GA, Utrecht, The Netherlands.
Background: Nosocomial pneumonia is common in trauma patients and associated with an adverse prognosis. We recently externally validated and recalibrated an existing formula to predict nosocomial pneumonia risk. Identifying more potential predictors could aid in a more accurate prediction of nosocomial pneumonia risk in level-1 trauma patients.
View Article and Find Full Text PDFLongitudinal analysis highlights structural changes in grey- and white-matter within military personnel exposed to blast.
Brain Inj
December 2024
Centre for Neuroscience Studies, Queen's University, Kingston, Ontario, Canada.
Objective: The purpose of this study was to determine whether gray matter volume and diffusion-based metrics in associated white matter changed in breachers who had neuroimaging performed at two timepoints. A secondary purpose was to compare these changes in a group who had a one-year interval between their imaging timepoints to a group that had a two-year interval between imaging.
Methods: Between timepoints, clusters with significantly different gray matter volume were used as seeds for reconstruction of associated structural networks using diffusion metrics.
Mediators of epilepsy risk after traumatic brain injury: A 20-year U.S. veteran cohort study.
Epilepsia
December 2024
VA Salt Lake City Health Care System, Informatics, Decision-Enhancement and Analytic Sciences Center, Salt Lake City, Utah, USA.
Objective: Traumatic brain injury (TBI) is a significant risk factor for epilepsy, but little work has explored whether risk of epilepsy after TBI may operate through intermediary mechanisms. The objective of this study was to statistically screen for potentially mediating effects among 64 comorbidities for epilepsy risk following TBI among Post-9/11 U.S.
View Article and Find Full Text PDFPleozymes: Pleiotropic Oxidized Carbon Nanozymes Enhance Cellular Metabolic Flexibility.
Nanomaterials (Basel)
December 2024
Center for Genomics and Precision Medicine, Institute of Bioscience and Technology, Texas A&M Health Science Center, Houston, TX 77030, USA.
Our group has synthesized a pleiotropic synthetic nanozyme redox mediator we term a "pleozyme" that displays multiple enzymatic characteristics, including acting as a superoxide dismutase mimetic, oxidizing NADH to NAD, and oxidizing HS to polysulfides and thiosulfate. Benefits have been seen in acute and chronic neurological disease models. The molecule is sourced from coconut-derived activated charcoal that has undergone harsh oxidization with fuming nitric acid, which alters the structure and chemical characteristics, yielding 3-8 nm discs with broad redox potential.
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