Background: Subconcussive blast exposure during military training has been the subject of both anecdotal concerns and reports in the medical literature, but prior studies have often been small and have used inconsistent methods.
Methods: This paper presents the methodology employed in INVestigating traIning assoCiated blasT pAthology (INVICTA) to assess a wide range of aspects of brain function, including immediate and delayed recall, gait and balance, audiologic and oculomotor function, cerebral blood flow, brain electrical activity and neuroimaging and blood biomarkers.
Results: A number of the methods employed in INVICTA are relatively easy to reproducibly utilize, and can be completed efficiently, while other measures require greater technical expertise, take longer to complete, or may have logistical challenges.
Conclusions: This presentation of methods used to assess the impact of blast exposure on the brain is intended to facilitate greater uniformity of data collection in this setting, which would enable comparison between different types of blast exposure and environmental circumstances, as well as to facilitate meta-analyses and syntheses across studies.
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http://dx.doi.org/10.1186/s12874-022-01807-2 | DOI Listing |
Neurotrauma Rep
December 2024
Department of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
Emerging evidence from autopsy studies indicates that interface astroglial scarring (IAS) at the gray-white matter junction is a pathological signature of repeated blast brain injury in military personnel. However, there is currently no neuroimaging test that detects IAS, which is a major barrier to diagnosis, prevention, and treatment. In 27 active-duty U.
View Article and Find Full Text PDFNeurotrauma Rep
December 2024
Truman VA Hospital Research Service, Columbia, Missouri, USA.
Primary blast exposure is a predominant cause of mild traumatic brain injury (mTBI) among veterans and active-duty military personnel, and affected individuals may develop long-lasting behavioral disturbances that interfere with quality of life. Our prior research with the "Missouri Blast" model demonstrated behavioral changes relevant to deficits in cognitive and affective domains after exposure to low-intensity blast (LIB). In this study, behavioral evaluations were extended to 3 months post-LIB injury using multifaceted conventional and advanced behavioral paradigms.
View Article and Find Full Text PDFSoc Psychiatry Psychiatr Epidemiol
December 2024
School of Psychology, University of New South Wales, Sydney, NSW, 2052, Australia.
Purpose: Exposure to traumatic events may lead to the development of Acute Stress Disorder (ASD) within the first month post-trauma in some individuals, while others may not exhibit ASD symptoms. ASD was introduced as a potential early indicator to identify those at higher risk of developing Posttraumatic Stress Disorder (PTSD), however, PTSD can occur in some individuals even without prior ASD. Assessing ASD post-trauma can assist in identifying those who would most benefit from intervention to prevent later PTSD, yet the predictive power of ASD varies across studies, with intensity of ASD symptoms and subthreshold PTSD often less considered.
View Article and Find Full Text PDFSci Rep
December 2024
Civil Engineering Department, Shoolini University, Solan, Himachal Pradesh, 173229, India.
Geopolymer concrete (GPC) offers a sustainable alternative by eliminating the need for cement, thereby reducing carbon dioxide emissions. Using durable concrete helps prevent the corrosion of reinforcing bars and reduces spalling caused by chemical attacks. This study investigates the impact of adding 5, 10, and 15% silica fumes (SF) on the mechanical and durability properties of GPC cured at 60 °C for 24 h.
View Article and Find Full Text PDFNeurosci Lett
December 2024
School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA, USA; Department of Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VA, USA; Veterans Affairs Medical Center, Salem, VA, USA. Electronic address:
Regulation of glutamate through glutamate-glutamine cycling is critical for mediating nervous system plasticity. Blast-induced traumatic brain injury (bTBI) has been linked to glutamate-dependent excitotoxicity, which may be potentiating chronic disorders such as post-traumatic epilepsy. The purpose of this study was to measure changes in the expression of astrocytic and neuronal proteins responsible for glutamatergic regulation at 4-, 12-, and 24 h in the cortex and hippocampus following single blast exposure in a rat model for bTBI.
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