Military medicine
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The aim of this study was to quantify the extent of donor-cell-derived myogenesis achieved by a novel surgical technique known as Minimally Invasive Muscle Embedding (MIME). ⋯ In MIME-treated muscles, 22% ± 7% and 78% ± 7% muscle fibers were RFP+ and GFP+, respectively (mean ± standard deviation); and all RFP+ fibers were positive for desmin and dystrophin. Conclusion. We conclude that MIME helps generate muscle fibers of donor origin, in host muscle.
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Symptoms of postconcussive syndrome (PCS) after mild TBI (mTBI) have been shown to resolve quickly, yet new research raises questions about possible long-term effects of this condition. It is not clear how best to address assessment and treatment when someone reports lingering symptoms of PCS. One self-report measure used by the VA and the DoD is the Neurobehavioral Symptom Inventory (NSI), but this measure may be affected by underlying psychiatric symptoms. We investigated whether the NSI is sensitive to mTBI after considering a number of psychiatric and demographic factors. ⋯ The NSI score was primarily explained by symptoms of PTSD and depression, suggesting that the NSI is not specific to the experience of a brain injury. We recommend cautious interpretation when this measure is used in the chronic phase after mTBI, especially among patients with comorbid depression or PTSD.
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Small, well prepared, culturally competent, and embedded health engagement teams (EHET) tailored to work within a partner health system, rather than outside of it, will achieve greater mutual benefit, desired military objectives, and better health outcomes for the United States Department of Defence and its partners. EHETs have significant advantages over traditional methods of choice for health security cooperation and humanitarian assistance missions. These advantages include enhanced capability and capacity building, greater trust through intentional cultural expertise, a ready platform for enduring relationships, enhanced host nation legitimacy, and flexibility to target specific issues with greater fidelity. ⋯ S. military and the civilian business world each have extensive experience in employing small teams that the health community can emulate. The ideal EHET should have the following nine characteristics: 12 people or fewer, skillsets for the tasks, global health knowledge, be multidisciplinary, a balance of experience, local language capability, geopolitical and cultural competence, targeted preparation for specific security and health objectives, and joint representation. This paper will explore these components of the prototype EHET as it will be tested in our research project.
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Severe trauma to the spinal cord leads to a near complete loss of blood flow at the injury site along with significant hypoperfusion of adjacent tissues. Characterization and monitoring of local tissue hypoperfusion is currently not possible in clinical practice because available imaging techniques do not allow for assessment of blood flow with sufficient spatial and temporal resolutions. The objective of the current study was to determine whether ultrafast contrast-enhanced ultrasound (CEUS) imaging could be used to visualize and quantify acute hemodynamic changes in a rat traumatic spinal cord injury (SCI) model. ⋯ We conclude that CEUS has the spatial and temporal sensitivity and resolution to visualize local tissue perfusion and vessel architecture, which maybe useful clinically to determine injury extent and severity in patients with SCI.
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Retracted Publication
PTSD Susceptibility and Challenges: Pathophysiological Consequences of Behavioral Symptoms.
Posttraumatic stress disorder (PTSD) can develop during the aftermath of traumatic events. Although many are impacted by several stressors, nearly 3.6% suffer from PTSD in the United States with higher incidence reported in military service personnel. Any injury to the blood-brain barrier can ignite an array of biological signaling molecules in the immune-privileged brain parenchyma, which can disrupt the synaptic neural network, resulting in altered behavior. ⋯ Identification of neural biomarkers is essential to understand the subclinical symptoms for the diagnosis PTSD, which may not be visible by magnetic resonance imaging (MRI/fMRI) and may take years to clinically manifest.