Publications by authors named "V S K Sajja"

It is well documented that service members are exposed to repeated low-level blast overpressure during training with heavy weapons such as artillery, mortars and explosive breaching. Often, acute symptoms associated with these exposures are transient but cumulative effect of low-level repeated blast exposures (RBEs) can include persistent deficits in cognitive and behavioral health. Thus far, reliable diagnostic biomarkers which can guide countermeasure strategies have not been identified.

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Wound-invasive fungal diseases (WIFDs), especially mucormycosis, have emerged as life-threatening infections during recent military combat operations. Many combat-relevant fungal pathogens are refractory to current antifungal therapy. Therefore, animal models of WIFDs are urgently needed to investigate new therapeutic solutions.

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Article Synopsis
  • Blast-related traumatic brain injury (bTBI) is a significant neurological issue for military personnel, leading to long-term health problems and impacts on quality of life, with varying manifestations that complicate understanding.
  • Research into blast injuries has shifted from rodent models to ferrets, as their brain structure more closely resembles that of humans, allowing for better insights into the effects of bTBI.
  • Findings from this study on ferrets exposed to blasts revealed issues like impulsivity in decision-making, increased glutamate levels linked to behavioral deficits, high levels of brain -acetylaspartate indicating potential metabolic disruptions, and pre-frontal cortex/auditory cortex signaling dysfunction that may relate to psychiatric disorders.
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Article Synopsis
  • Blast exposure leads to significant auditory deficits, particularly affecting central auditory processing, which is not well understood compared to effects on the ear itself.
  • The study investigated how blast injuries impaired synaptic connectivity in the auditory cortex of mice using various techniques such as electrophysiology and proteomic analysis.
  • Results showed immediate functional connectivity issues and structural changes in the auditory cortex that began to recover within weeks, highlighting potential targets for therapy to improve hearing in blast-exposed patients.
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Introduction: Simulation of blast exposure in the laboratory has been inconsistent across laboratories. This is primarily because of adoption of the shock wave-generation techniques that are used in aerodynamic tests as opposed to application of blast exposures that are relevant to combat and training environments of a Warfighter. Because of the differences in blast signatures, characteristically different pathological consequences are observed among the preclinical studies.

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