Differential Neuroendocrine Responses and Dysregulation of the Hypothalamic-Pituitary-Adrenal Axis Following Repeated Mild Concussive Impacts and Blast Exposures in a Rat Model.

Traumatic brain injury (TBI) remains a significant public health concern, particularly among military personnel and contact sport athletes who are frequently exposed to repeated blast overpressure waves and mild concussive impacts, respectively. While moderate and severe TBIs have been extensively studied, the long-term neuroendocrine consequences of mild, repetitive brain trauma are poorly understood. In this study, we investigated the temporal dynamics of hypothalamic-pituitary-adrenal (HPA) axis dysregulation following repeated mild concussive head impacts and blast exposures using two clinically relevant rodent models.

Longitudinal Dysregulation of Adiponectin and Leptin Following Blast-Induced Polytrauma in a Rat Model.

Blast-induced polytrauma (BIPT) is a common injury among military personnel exposed to explosive blasts. It is increasingly recognized as a complex, multisystem disorder that extends beyond neurological damage to include systemic metabolic and inflammatory dysfunction. Adipokines, particularly leptin and adiponectin, are hormones secreted by adipose tissue and are emerging as key mediators in the pathophysiology of traumatic brain injuries.

Diminished and altered cellular senescence response in delayed wound healing of aging.

The transient upregulation of cellular senescence within wound tissues has been demonstrated to be an important biological process facilitating efficient tissue repair. Dysregulation of this transient wound-induced senescence-like response can result in impaired healing outcomes. Given the established age-related decline in tissue regenerative capacity, we hypothesized that alterations in this senescence response contribute to the delayed healing of cutaneous wounds in aged individuals.

Temporal Dynamics of Retinal Inflammation Following Blast Exposure in a Ferret Model.

Blast-induced traumatic ocular injury (bTOI) is a major cause of vision loss in military personnel involved in recent combat operations. However, its underlying mechanisms remain poorly understood, hindering the development of effective treatments. This study investigated the temporal expression patterns of key inflammatory markers in the retina after blast exposure using a ferret model.

Dysregulation of Retinal Melatonin Biosynthetic Pathway and Differential Expression of Retina-Specific Genes Following Blast-Induced Ocular Injury in Ferrets.

Background/objectives: Blast-induced traumatic ocular injuries (bTOI) pose a significant risk to military and civilian populations, often leading to visual impairment or blindness. Retina, the innermost layer of ocular tissue consisting of photoreceptor and glial cells, is highly susceptible to blast injuries. Despite its prevalence, the molecular mechanisms underlying retinal damage following bTOI remain poorly understood, hindering the development of targeted therapies.

Topical ABT-263 treatment reduces aged skin senescence and improves subsequent wound healing.

Senescent cells accumulate in aging tissues, impairing their ability to undergo repair and regeneration following injury. Previous research has demonstrated that targeting tissue senescence with senolytics can enhance tissue regeneration and repair by selectively eliminating SnCs in specific aged tissues. In this study, we focused on eliminating senescent skin cells in aged mice to assess the effects on subsequent wound healing.

Hyphae of and Are More Virulent and Resistant to Antifungal Agents Than Sporangiospores In Vitro and in .

species cause debilitating, life-threatening sinopulmonary diseases in immunocompromised patients and penetrating wounds in trauma victims. Common antifungal agents against mucormycosis have significant toxicity and are often ineffective. To evaluate treatments against mucormycosis, sporangiospores are typically used for in vitro assays and in pre-clinical animal models of pulmonary infections.

Cellular Senescence in Aging, Tissue Repair, and Regeneration.

Society and our healthcare system are facing unprecedented challenges due to the expansion of the older population. As plastic surgeons, we can improve care of our older patients through understanding the mechanisms of aging that inevitably impact their outcomes and well-being. One of the major hallmarks of aging, cellular senescence, has recently become the focus of vigorous research in academia and industry.

An Insight into Aging, Senescence, and Their Impacts on Wound Healing.

Cellular senescence has been found to have beneficial roles in development, tissue regeneration, and wound healing. However, in aging senescence increases, and the ability to properly repair and heal wounds significantly declines across multiple tissues. This age-related accumulation of senescent cells may cause loss of tissue homeostasis leading to dysregulation of normal and timely wound healing processes.

-based nanomedicine with enhanced biological applications: in vitro and in vivo approach.

This is the first study to report the green synthesis of mediated silver nanoparticles (LTAgNPs). The optical and structural properties of the synthesised LTAgNPs were analysed using ultraviolet-visible spectroscopy, scanning electron microscopy, Fourier transform infrared, dynamic light scattering and energy dispersive X-ray. LTAgNps were evaluated for their anti-bacterial and anti-fungal properties against 18 pathogens and exhibited significant inhibition against all the strains tested.

Efficacy of Lobelia alsinoides Lam ethanolic extract on a third-degree burn: An experimental study on rats.

This is the first study to evaluate the topical application of Lobelia alsinoides Lam (LT) ethanolic extract on burns in rats. A deep third-degree burn wound was inflicted in adult male Wistar rats and the burns were dressed daily with a topical ointment formulation (Patent filed) comprising of Lobelia alsinoides Lam (5% and 10% w/w). The wound had noteworthy contraction and quicker eschar removal in 10% w/w LT-treated groups followed by 5% w/w treated groups on comparing with the commonly prescribed ointment (Silverex containing 1% w/w Silver sulfadiazine).