Antivenom Administration After Rattlesnake Envenoming in Arizona Does Not Directly Diminish Pain.

The onset, progression, and severity of pain following rattlesnake envenomation are highly variable between patients. Pain can be severe and persistent, seemingly refractory to opioid analgesics. The ability of antivenom to directly relieve pain has not been well studied.

Monocyte-derived extracellular vesicles, stimulated by Trypanosoma cruzi, enhance cellular invasion in vitro via activated TGF-β1.

During cell invasion, large Extracellular Vesicle (lEV) release from host cells was dose-dependently triggered by Trypanosoma cruzi metacyclic trypomastigotes (Mtr). This lEV release was inhibited when IP-mediated Ca exit from the ER and further Ca entry from plasma membrane channels was blocked, but whilst any store-independent Ca entry (SICE) could continue unabated. That lEV release was equally inhibited if all entry from external sources was blocked by chelation of external Ca points to the major contributor to Mtr-triggered host cell lEV release being IP/store-mediated Ca release, SICE playing a minor role.

High-speed reflectance confocal microscopy using speckle modulation.

We developed a spectrally-encoded, line reflectance confocal microscope (RCM) that uses a rotating diffuser to rapidly modulate the illumination speckle pattern. The speckle modulation approach reduced speckle noise while imaging with a spatially coherent light source needed for high imaging speed and cellular resolution. The speckle-modulation RCM device achieved lateral and axial resolutions of 1.

Adaptation and study protocol for harvest for health together Arizona: A mentored community garden intervention for survivors of cancer.

Background: Current health behavior recommendations for skin cancer prevention, treatment, and survivorship are the same for survivors of other cancers; they include eating a healthy diet, being physically active, maintaining a healthy weight, and minimizing ultraviolet (U.V.) exposure.

Handheld cross-polarised microscope for imaging individual pigmented cells in human skin in vivo.

We present the development of a simple, handheld cross-polarised microscope (CPM) and demonstration of imaging individual pigmented cells in human skin in vivo. In the CPM device, the cross-polarised detection approach is used to reduce the specular reflection from the skin surface and preferentially detect multiply-scattered light. The multiply-scattered light works as back illumination from within the tissue towards the skin surface, and superficial pigment such as intraepidermal melanin absorbs some spectral bands of the multiply-scattered light and cast coloured shadows.

A Coxsackievirus B1-mediated nonlytic Extracellular Vesicle-to-cell mechanism of virus transmission and its possible control through modulation of EV release.

Like most non-enveloped viruses, CVB1 mainly uses cell lysis to spread. Details of a nonlytic virus transmission remain unclear. Extracellular Vesicles (EVs) transfer biomolecules between cells.

Extremely low-frequency magnetic fields significantly enhance the cytotoxicity of methotrexate and can reduce migration of cancer cell lines via transiently induced plasma membrane damage.

Extra Low-frequency Magnetic Fields (ELF-MFs) significantly enhance cellular uptake of methotrexate by inducing transient plasma membrane pores/damage. This enhanced 'dose loading' of methotrexate via the electromagnetically induced membrane pores leads to similar outcomes as the normal control while using significantly smaller therapeutic doses in vitro when compared to non-ELF-MF treated control. Approximately 10% of the typical therapeutic dose yielded similar results when used with ELF-MF.

Isolation and characterization of extracellular vesicles and future directions in diagnosis and therapy.

Extracellular vesicles (EVs) are a unique and heterogeneous class of lipid bilayer nanoparticles secreted by most cells. EVs are regarded as important mediators of intercellular communication in both prokaryotic and eukaryotic cells due to their ability to transfer proteins, lipids and nucleic acids to recipient cells. In addition to their physiological role, EVs are recognized as modulators in pathological processes such as cancer, infectious diseases, and neurodegenerative disorders, providing new potential targets for diagnosis and therapeutic intervention.

Navigating the initial diagnosis and management of adult IgA vasculitis: A review.

Background: IgA vasculitis in adults has not been thoroughly studied. This has left a practice gap related to the management and follow-up of a population that is at an increased risk of comorbidities and potentially poor outcomes. For this reason, it is important to synthesize evidence from the current literature because this can help direct the movement for more robust studies to clarify best practice recommendations.

Intralesional Bleomycin Combined With Cryotherapy in the Treatment of Recalcitrant Verruca Vulgaris.

Verruca vulgaris is a common cutaneous manifestation of Human Papillomavirus (HPV) infection that presents as hyperkeratotic, cauliflower-like papules with central black petechiae. These lesions may be resistant to conventional therapies, posing a therapeutic challenge and prolong significant morbidity for the patient. This case report demonstrates an immediate and robust response of recalcitrant warts to intralesional bleomycin injection paired with cryotherapy.

Generalised eruptive histiocytosis preceded by systemic symptoms.

Generalised eruptive histiocytosis is a rare proliferative disease that typically presents with indolent cutaneous eruptions. We describe the case of a 73-year-old man presenting with diffuse, asymptomatic crops of pink to dusky red papules preceded by general malaise, myalgias, fluctuating fever, chills, and weight loss. Histological evaluation revealed a non-Langerhans cell histiocytic dermal infiltrate with spindle cell features and chronic inflammation, reactive for CD68 and negative for both S100 and CD1a.

Speckle-free, near-infrared portable confocal microscope.

We have developed a portable confocal microscope (PCM) that uses an inexpensive near-infrared LED as the light source. Use of the spatially incoherent light source significantly reduced the speckle contrast. The PCM device was manufactured at the material cost of approximately 5000 and weighed only 1 kg.

Plasma mEV levels in Ghanain malaria patients with low parasitaemia are higher than those of healthy controls, raising the potential for parasite markers in mEVs as diagnostic targets.

This study sought to measure medium-sized extracellular vesicles (mEVs) in plasma, when patients have low early in infection. We aimed to define the relationship between plasma mEVs and: (i) parasitaemia, (ii) period from onset of malaria symptoms until seeking medical care (patient delay, PD), (iii) age and (iv) gender. In this cross-sectional study, n = 434 patients were analysed and Nanosight Tracking Analysis (NTA) used to quantify mEVs (vesicles of 150-500 nm diameter, isolated at 15,000 × g, β-tubulin-positive and staining for annexin V, but weak or negative for CD81).

Educational interventions for primary care providers to improve clinical skin examination for skin cancer.

Background And Purpose: Skin cancer, the most commonly diagnosed cancer in the United States, is a serious health care concern. Early skin cancer detection improves prognosis; most common early detection approach is a comprehensive clinical skin examination (CSE). A CSE consists of skin cancer risk assessment, head-to-toe skin examination, and skin lesion assessment.

Analysis of outcomes following treatment of craniodorsal hip luxation with closed reduction and Ehmer sling application in dogs.

To describe outcomes for dogs after treatment of craniodorsal hip luxation with closed reduction and Ehmer sling placement and investigate potential risk factors for sling-associated tissue injury or reluxation of the affected hip at or near the time of sling removal. Retrospective multicenter cohort study. 92 dogs.

Effects of Acute and Chronic Exercise on Immunological Parameters in the Elderly Aged: Can Physical Activity Counteract the Effects of Aging?

Immunosenescence is characterized by deterioration of the immune system caused by aging which induces changes to innate and adaptive immunity. Immunosenescence affects function and phenotype of immune cells, such as expression and function of receptors for immune cells which contributes to loss of immune function (chemotaxis, intracellular killing). Moreover, these alterations decrease the response to pathogens, which leads to several age-related diseases including cardiovascular disease, Alzheimer's disease, and diabetes in older individuals.

Systematic review of advanced practice nurses' skin cancer detection knowledge and attitudes, clinical skin examination, lesion detection, and training.

Background And Purpose: Skin cancer is the most common malignancy in the United States; early detection reduces the public health burden. This systematic review updates the state of advanced practice nurses' skin cancer knowledge and attitudes, performance of and barriers to clinical skin examination (CSE), recognition of skin lesions, and related training activities.

Methods: The Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement guided a search of eight literature databases that yielded 12 studies from 2010 to 2016.

Lifelong exercise, but not short-term high-intensity interval training, increases GDF11, a marker of successful aging: a preliminary investigation.

Lifelong exercise is associated with regulation of skeletal mass and function, reductions in frailty, and successful aging. Yet, the influence of exercise on myostatin and myostatin-interacting factors is relatively under examined in older males. Therefore, we investigated whether serum total myostatin, free myostatin, follistatin, and growth and differentiation factor 11 (GDF11) were altered following high-intensity interval training (HIIT) in a group of 13 lifelong sedentary (SED; 64 [6] years) and 11 lifelong exercising (LEX; 62 [6] years) older males.

Sigma-1 receptors modulate neonatal Na1.5 ion channels in breast cancer cell lines.

The main aim of this study was to investigate a possible functional connection between sigma-1 receptors and voltage-gated sodium channels (VGSCs) in human breast cancer cells. The hypothesis was that sigma-1 drugs could alter the metastatic properties of breast cancer cells via the VGSC. Evidence was found for expression of sigma-1 receptor and neonatal Na1.

The acceptance of mobile teledermoscopy by primary care nurse practitioners in the state of Arizona.

Purpose: To conduct a pilot survey to assess acceptance of mobile teledermoscopy (MTD) by primary care nurse practitioners (NPs) working in Arizona.

Data Sources: Sixty-two participants recruited from NP and academic listservs in Arizona completed an online survey prefaced by a MTD definition, device photographs, and a practice case, followed by 33 items measuring Teledermatology Technology Acceptance Model (TeleTAM) constructs.

Conclusions: Participants were highly interested in using MTD to assess skin lesions.