Medicine and Health Sciences Commons^™

Evaluation Of Sars-Cov-2 Spike S1 Protein Response On Pi3k-Mediated Il-8 Release, Christina E. Borchers, Anita Thyagarajan, Christine M. Rapp, Jeffrey B. Travers, Ravi P. Sahu

Dermatology Faculty Publications

A novel coronavirus related to a condition known as a severe acute respiratory syndrome (SARS) was termed as SARS Coronavirus-19 (SARS-CoV-2 or COVID-19), which has caused an unprecedented global pandemic. Extensive efforts have been dedicated worldwide towards determining the mechanisms of COVID-19 associated pathogenesis with the goals of devising potential therapeutic approaches to mitigate or overcome comorbidities and mortalities. While the mode of SARS-CoV-2 infection, its structural configuration, and mechanisms of action, including the critical roles of the Spike protein have been substantially explored, elucidation of signaling pathways regulating its cellular responses is yet to be fully determined. Notably, phosphoinositide …

Keratinocyte-Derived Microvesicle Particles Mediate Ultraviolet B Radiation-Induced Systemic Immunosuppression, Langni Liu, Azeezat A. Awoyemi, Katherine E. Fahy, Pariksha Thapa, Christina E. Borchers, Benita Y. Wu, Cameron L. Mcglone, Benjamin Schmeusser, Zafer Sattouf, Craig A. Rohan, Amy R. Williams, Elizabeth E. Cates, Christina Kinsely, Lisa E. Kelly, Ji C. Bihl, David R. Cool, Ravi P. Sahu, Jinju Wang, Yanfang Chen, Christine M. Rapp, Michael G. Kemp, Ron Michael Johnson, Jeffrey B. Travers

Dermatology Faculty Publications

A complete carcinogen, ultraviolet B (UVB) radiation (290–320 nm), is the major cause of skin cancer. UVB-induced systemic immunosuppression that contributes to photocarcinogenesis is due to the glycerophosphocholine-derived lipid mediator platelet-activating factor (PAF). A major question in photobiology is how UVB radiation, which only absorbs appreciably in the epidermal layers of skin, can generate systemic effects. UVB exposure and PAF receptor (PAFR) activation in keratinocytes induce the release of large numbers of microvesicle particles (MVPs; extracellular vesicles ranging from 100 to 1000 nm in size). MVPs released from skin keratinocytes in vitro in response to UVB (UVB-MVPs) are dependent on …

Clinical And Diagnostic Imaging Manifestations Of Erdheim-Chester Disease, Avrey Thau, Roland Gazaille, Alejandro Calvo, Christina E. Borchers, Ronald E. Warwar, William Boyce, Joseph Blake

Dermatology Faculty Publications

Introduction: Erdheim-Chester disease (ECD) is a rare form of non-Langerhans-cell histiocytosis which typically presents with bilateral masses due to retro-orbital deposition, xanthelasma of the eyelids, cardiopulmonary manifestations, along with sclerosis and cortical thickening of the long bones, particularly in the lower extremities.

Case Report: We present the case of a 58-year-old male who presented to a local emergency department with a one day history of severe dizziness, diaphoresis, dyspnea, and intermittent diplopia. Imaging demonstrated bilateral symmetric retrobulbar masses. Subsequent imaging as well as orbital and bone marrow biopsies lead to the diagnosis of ECD.

Conclusion: Erdheim-Chester disease is a rare …

Inter- And Intra-Physician Variation In Quantifying Actinic Keratosis Skin Photodamage, Benjamin Schmeusser, Christina E. Borchers, Jeffrey B. Travers, Samia Borchers, Justin Trevino, Max Rubin, Heidi Donnelly, Karl Kellawan, Lydia Carpenter, Shalini Bahl, Craig A. Rohan, Elizabeth Muennich, Scott Guenthner, Holly Hahn, Ali Rkein, Marc Darst, Nico Mousdicas, Elizabeth E. Cates, Ulas Sunar, Trevor J. Bihl

Dermatology Faculty Publications

We investigated the variations in physician evaluation of skin photodamage based on a published photodamage scale. Of interest is the utility of a 10-level scale ranging from none and mild photodamage to actinic keratosis (AK). The dorsal forearms of 55 adult subjects with various amounts of photodamage were considered. Each forearm was independently evaluated by 15 board-certified dermatologists according to the Global Assessment Severity Scale ranging from 0 (less severe) to 9 (the most progressed stage of skin damage). Dermatologists rated the levels of photodamage based upon the photographs in blinded fashion. Results show substantial disagreement amongst the dermatologists on …

Quantifying Skin Photodamage With Spatial Frequency Domain Imaging: Statistical Results, Jeffrey B. Travers, Chien Poon, Trevor J. Bihl, Benjamin Rinehart, Christina E. Borchers, Daniel J. Rohrbach, Samia Borchers, Julian J. Trevino, Max Rubin, Heidi Donnelly, Karl Kellawan, Lydia Carpenter, Shalini Bahl, Craig A. Rohan, Elizabeth Muennich, Scott Guenthner, Holly Hahn, Ali Rkein, Marc Darst, Nico Mousdicas, Elizabeth E. Cates, Ulas Sunar

Dermatology Faculty Publications

We investigated the change in optical properties and vascular parameters to characterize skin tissue from mild photodamage to actinic keratosis (AK) with comparison to a published photodamage scale. Multi-wavelength spatial frequency domain imaging (SFDI) measurements were performed on the dorsal forearms of 55 adult subjects with various amounts of photodamage. Dermatologists rated the levels of photodamage based upon the photographs in blinded fashion to allow comparison with SFDI data. For characterization of statistical data, we used artificial neural networks. Our results indicate that optical and vascular parameters can be used to quantify photodamage and can discriminate between the stages as …