Dermatology Commons^™

Inhibition Of Apoptosis Signal-Regulating Kinase 1 Alters The Wound Epidermis And Enhances Auricular Cartilage Regeneration., Qian-Shi Zhang, Deepa S. Kurpad, My G. Mahoney, Marla J. Steinbeck, Theresa A. Freeman

Department of Orthopaedic Surgery Faculty Papers

Why regeneration does not occur in mammals remains elusive. In lower vertebrates, epimorphic regeneration of the limb is directed by the wound epidermis, which controls blastema formation to promote regrowth of the appendage. Herein, we report that knockout (KO) or inhibition of Apoptosis Signal-regulated Kinase-1 (ASK1), also known as mitogen-activated protein kinase kinase kinase 5 (MAP3K5), after full thickness ear punch in mice prolongs keratinocyte activation within the wound epidermis and promotes regeneration of auricular cartilage. Histological analysis showed the ASK1 KO ears displayed enhanced protein markers associated with blastema formation, hole closure and regeneration of auricular cartilage. At seven …

Trends In Unsolicited Dermatologic Opinions: A National Survey, Jordan Wang, Dorota Z. Korta, Christopher B. Zachary, Matthew S. Keller

Department of Dermatology and Cutaneous Biology Faculty Papers

In dermatology, a particularly common ethical dilemma can arise when the skin lesions of bystanders are inadvertently viewed in public settings. Dermatology is a unique field, where a person’s organ of interest is readily visible to others. When lesions are suspicious for skin disease, unsolicited medical opinions may or may not be given depending on several factors. This study examined the actions and attitudes of dermatologists with different levels of experience through the use of case scenarios with various settings and skin lesions. © 2017, Dermatology Online Journal. All rights reserved.

Amlexanox Enhances Premature Termination Codon Read-Through In Col7a1 And Expression Of Full Length Type Vii Collagen: Potential Therapy For Recessive Dystrophic Epidermolysis Bullosa., Velina S. Atanasova, Qiujie Jiang, Marco Prisco, Christina Gruber, Josefina Piñón Hofbauer, Mei Chen, Cristina Has, Leena Bruckner-Tuderman, John A. Mcgrath, Jouni Uitto, Andrew P. South

Department of Dermatology and Cutaneous Biology Faculty Papers

Recessive dystrophic epidermolysis bullosa (RDEB) is a rare monogenic blistering disorder caused by the lack of functional type VII collagen, leading to skin fragility and subsequent trauma-induced separation of the epidermis from the underlying dermis. A total of 46% of patients with RDEB harbor at least one premature termination codon (PTC) mutation in COL7A1, and previous studies have shown that aminoglycosides are able to overcome RDEB PTC mutations by inducing "read-through" and incorporation of an amino acid at the PTC site. However, aminoglycoside toxicity will likely prevent widespread clinical application. Here the FDA-approved drug amlexanox was tested for its ability …

Brain Processing Of Contagious Itch In Patients With Atopic Dermatitis, C. Schut, Hideki Mochizuki, Shoshana Grossman, Andrew C. Lin, Chris Conklin, Feroze B. Mohamed, Uwe Gieler, Jorg P. Kupfer, Gil Yosipovitch

Department of Radiology Faculty Papers

Several studies show that itch and scratching cannot only be induced by pruritogens like histamine or cowhage, but also by the presentation of certain (audio-) visual stimuli like pictures on crawling insects or videos showing other people scratching. This phenomenon is coined "Contagious itch" (CI). Due to the fact that CI is more profound in patients with the chronic itchy skin disease atopic dermatitis (AD), we believe that it is highly relevant to study brain processing of CI in this group. Knowledge on brain areas involved in CI in AD-patients can provide us with useful hints regarding non-invasive treatments that …

Inhibition Of Age-Related Therapy Resistance In Melanoma By Rosiglitazone-Mediated Induction Of Klotho., Reeti Behera, Amanpreet Kaur, Marie R. Webster, Suyeon Kim, Abibatou Ndoye, Curtis H. Kugel, Gretchen M. Alicea, Joshua Wang, Kanad Ghosh, Phil Cheng, Sofia Lisanti, Katie Marchbank, Vanessa Dang, Mitchell Levesque, Reinhard Dummer, Xiaowei Xu, Meenhard Herlyn, Andrew E. Aplin, Alexander Roesch, Cecilia Caino, Dario C. Altieri, Ashani T. Weeraratna

Department of Cancer Biology Faculty Papers

Purpose: Aging is a poor prognostic factor for melanoma. We have shown that melanoma cells in an aged microenvironment are more resistant to targeted therapy than identical cells in a young microenvironment. This is dependent on age-related secreted factors. Klotho is an age-related protein whose serum levels decrease dramatically by age 40. Most studies on klotho in cancer have focused on the expression of klotho in the tumor cell. We have shown that exogenous klotho inhibits internalization and signaling of Wnt5A, which drives melanoma metastasis and resistance to targeted therapy. We investigate here whether increasing klotho in the aged microenvironment …

Evaluating Cultural Competency And Patient Satisfaction In An Urban Dermatology Clinic., Jordan V. Wang, Nicholas Ross, Matthew Keller

Department of Dermatology and Cutaneous Biology Faculty Papers

Cultural competency continues to gain increased attention in medicine. Not only does it play a significant role in the delivery of health care and patient outcomes, but it also remains a major determinant of patient satisfaction. This study investigated how patients in an urban dermatology clinic rated their satisfaction with cultural competency. Compared to White patients, satisfaction scores were greater for Hispanic or Latino patients and less for Asian patients, while there was no significant difference for Black or African American patients. There were clear differences in patient satisfaction rates of various dimensions of cultural competency. A follow-up study with …

Elevated Dietary Magnesium During Pregnancy And Postnatal Life Prevents Ectopic Mineralization In Enpp1asj Mice, A Model For Generalized Arterial Calcification Of Infancy., Joshua Kingman, Jouni Uitto, Qiaoli Li

Department of Dermatology and Cutaneous Biology Faculty Papers

Generalized arterial calcification of infancy (GACI) is an autosomal recessive disorder caused by mutations in the ENPP1 gene. It is characterized by mineralization of the arterial blood vessels, often diagnosed prenatally, and associated with death in early childhood. There is no effective treatment for this devastating disorder. We previously characterized the Enpp1asjmutant mouse as a model of GACI, and we have now explored the effect of elevated dietary magnesium (five-fold) in pregnant mothers and continuing for the first 14 weeks of postnatal life. The mothers were kept on either control diet or experimental diet supplemented with magnesium. Upon weaning at …

Expanding The Genotypic Spectrum Of Bathing Suit Ichthyosis., Nareh V. Marukian, Rong-Hua Hu, Brittany G. Craiglow, Leonard M. Milstone, Jing Zhou, Amy Theos, Hande Kaymakcalan, Deniz A. Akkaya, Jouni J. Uitto, Hassan Vahidnezhad, Leila Youssefian, Susan J. Bayliss, Amy S. Paller, Lynn M. Boyden, Keith A. Choate

Department of Dermatology and Cutaneous Biology Faculty Papers

Importance: Bathing suit ichthyosis (BSI) is a rare congenital disorder of keratinization characterized by restriction of scale to sites of relatively higher temperature such as the trunk, with cooler areas remaining unaffected. Fewer than 40 cases have been reported in the literature. Bathing suit ichthyosis is caused by recessive, temperature-sensitive mutations in the transglutaminase-1 gene (TGM1). Clear genotype-phenotype correlations have been difficult to establish because several of the same TGM1 mutations have been reported in BSI and other forms of congenital ichthyosis. We identify novel and recurrent mutations in 16 participants with BSI.

Objective: To expand the genotypic spectrum of …

Laboratory Tests In Patients Treated With Isotretinoin: Occurrence Of Liver And Muscle Abnormalities And Failure Of Ast And Alt To Predict Liver Abnormality., Guy F. Webster, Timothy G. Webster, Lorraine R. Grimes

Department of Dermatology and Cutaneous Biology Faculty Papers

Current laboratory monitoring may not be optimal. A retrospective chart review was performed on thelaboratory results of 246 patients who were treated with isotretinoin for acne over a 9-year period. Tests obtained were CBC, lipid panel, AST, ALT, CK, GGT,and C-reactive protein. Thirty-five patients had an elevated AST and 35 of these had an elevated CK; 32 had an elevated ALT and 11 of these had an elevated CK. Thirteen patients had an elevated GGT; in 5 this was the only abnormality, whereas 8 had a GGT elevation accompanied by an elevated AST or ALT. Two had an elevated GGT …

Considerations For The Use Of Medical Devices In Dermatology., Jordan Wang, Dorota Z. Korta, Christopher B. Zachary

Department of Dermatology and Cutaneous Biology Faculty Papers

This manuscript addresses the significant considerations concerning the development and use of medical devices in dermatology. With the rapidly growing demand and booming market for medical devices, especially lasers, it is crucial that dermatologists become familiar with the nuances associated with supporting clinical studies, consumer-driven marketing strategies, and the complex relationships that exist between physicians, industry, and consumers. An examination of these relationships includes an overview of the potential biases pertaining to advisory panels and treating clinicians. The aim of this paper is to serve as an introduction to the background of medical devices and to offer dermatologists important information …

Review Article: Pathogenesis And Clinical Manifestations Of Gastrointestinal Involvement In Systemic Sclerosis., Sumit Kumar, Jagmohan Singh, Satish Rattan, Anthony J. Dimarino, Sidney Cohen, Sergio A. Jimenez

Department of Dermatology and Cutaneous Biology Faculty Papers

BACKGROUND: Gastrointestinal tract (GIT) involvement is a common cause of debilitating symptoms in patients with systemic sclerosis (SSc). There are no disease modifying therapies for this condition and the treatment remains symptomatic, largely owing to the lack of a clear understanding of its pathogenesis.

AIMS: To investigate novel aspects of the pathogenesis of gastrointestinal involvement in SSc. To summarise existing knowledge regarding the cardinal clinical gastrointestinal manifestations of SSc and its pathogenesis, emphasising recent investigations that may be valuable in identifying potentially novel therapeutic targets.

METHODS: Electronic (PubMed/Medline) and manual Google search.

RESULTS: The GIT is the most common internal …

Challenges To Smartphone Applications For Melanoma Detection, Jordan V. Wang, Lance W. Chapman, Matthew S. Keller

Department of Dermatology and Cutaneous Biology Faculty Papers

This commentary addresses the emerging market for health-related smartphone applications. Specific to dermatology, there has been a significant increase not only in applications that promote skin cancer awareness and education but also in those meant for detection. With evidence showing that 365 dermatology-related applications were available in 2014--up from 230 in 2012--and that 1 in 5 patients under the age of 50 have used a smartphone to help diagnose a skin problem, there is clearly a large subset of patients participating in this growing trend. Therefore, we are obligated to take a closer look into this phenomenon. Studies have shown …

Ladarixin, A Dual Cxcr1/2 Inhibitor, Attenuates Experimental Melanomas Harboring Different Molecular Defects By Affecting Malignant Cells And Tumor Microenvironment., Daria Marley Kemp, Alyson Pidich, Mary Larijani, Rebecca Jonas, Elizabeth Lash, Takami Sato, Mizue Terai, Maria De Pizzol, Marcello Allegretti, Olga Igoucheva, Vitali Alexeev

Department of Dermatology and Cutaneous Biology Faculty Papers

CXCR1 and CXCR2 chemokine receptors and their ligands (CXCL1/2/3/7/8) play an important role in tumor progression. Tested to date CXCR1/2 antagonists and chemokine-targeted antibodies were reported to affect malignant cells in vitro and in animal models. Yet, redundancy of chemotactic signals and toxicity hinder further clinical development of these approaches. In this pre-clinical study we investigated the capacity of a novel small molecule dual CXCR1/2 inhibitor, Ladarixin (LDX), to attenuate progression of experimental human melanomas. Our data showed that LDX-mediated inhibition of CXCR1/2 abrogated motility and induced apoptosis in cultured cutaneous and uveal melanoma cells and xenografts independently of the …

Hyaline Fibromatosis Syndrome: A Novel Mutation And Recurrent Founder Mutation In The Cmg2/Antxr2 Gene., Leila Youssefian, Hassan Vahidnezhad, Yahya Aghighi, Vahid Ziaee, Sirous Zeinali, Maryam Abiri, Jouni Uitto

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

Joseph Albin Witkowski, Md (1925–2015), A Dermatologist For All Seasons, Lawrence Charles Parish

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

Distinct Cell Stress Responses Induced By Atp Restriction In Quiescent Human Fibroblasts., Nirupama Yalamanchili, Andres Kriete, David Alfego, Kelli M Danowski, Csaba Kari, Ulrich Rodeck

Department of Dermatology and Cutaneous Biology Faculty Papers

Quiescence is the prevailing state of many cell types under homeostatic conditions. Yet, surprisingly little is known about how quiescent cells respond to energetic and metabolic challenges. To better understand compensatory responses of quiescent cells to metabolic stress, we established, in human primary dermal fibroblasts, an experimental 'energy restriction' model. Quiescence was achieved by short-term culture in serum-deprived media and ATP supply restricted using a combination of glucose transport inhibitors and mitochondrial uncouplers. In aggregate, these measures led to markedly reduced intracellular ATP levels while not compromising cell viability over the observation period of 48 h. Analysis of the transcription …

Pemphigoid Gestationis: A Rare Dermatosis Of Pregnancy, Victoria Tran, Ms3, Meghan Belamorich, Md

The Medicine Forum

INTRODUCTION

Pemphigoid gestationis is a rare dermatosis of pregnancy that often goes unrecognized or misdiagnosed. It can lead to adverse fetal outcomes including preterm delivery, low fetal birth weight, and even neonatal pemphigoid gestationis1. As such, proper diagnosis and management is critical in reducing fetal risk.

Bibliography Of Secondary Sources On The History Of Dermatology Ii. Obituaries And Biographies In English Supplemented Through 2015, Sarah Brenner, Md (Editor), Lawrence Parish, Md, Michael J. Lavery, Mb Bch Bao; Mrcp, Andrzej Grzybowski, Md, Phd, Jennifer L. Parish, Md, Daniel H. Parish, Md, Jd

Department of Dermatology and Cutaneous Biology Faculty Papers

Introduction

A bibliographic record on the history of dermatology has been a project that started over 4 decades ago. It is a collection of all forms of history, ranging from dermatologic conditions, to famous dermatologists and physicians who have advanced the field of both dermatology and medicine, to the different countries that promoted the development of scientists, researchers and physicians alike.

It was decided that the bibliographic record would encompass journals, books and a compilation of obituaries. A pertinent question is whether a manually created bibliographic project is still warranted in the 21^st century. In short, yes. While Index …

Bibliography Of Secondary Sources On The History Of Dermatology, Sarah Brenner, Md (Editor), Lawrence Parish, Md, Michael J. Lavery, Mb Bch Bao; Mrcp, Andrzej Grzybowski, Md, Phd, Jennifer L. Parish, Md, Daniel H. Parish, Md, Jd

Department of Dermatology and Cutaneous Biology Faculty Papers

Introduction

A bibliographic record on the history of dermatology has been a project that started over 4 decades ago. It is a collection of all forms of history, ranging from dermatologic conditions, to famous dermatologists and physicians who have advanced the field of both dermatology and medicine, to the different countries that promoted the development of scientists, researchers and physicians alike.

It was decided that the bibliographic record would encompass journals, books and a compilation of obituaries. A pertinent question is whether a manually created bibliographic project is still warranted in the 21^st century. In short, yes. While Index …

Bibliography Of Secondary Sources On The History Of Dermatology Iii. Books, Monographs, And Chapters In English Supplemented Through 2015, Sarah Brenner, Md (Editor), Lawrence Parish, Md, Michael J. Lavery, Mb Bch Bao; Mrcp (Uk, Andrzej Grzybowski, Md, Phd, Jennifer L. Parish, Md, Daniel H. Parish, Md, Jd

Department of Dermatology and Cutaneous Biology Faculty Papers

Introduction

A bibliographic record on the history of dermatology has been a project that started over 4 decades ago. It is a collection of all forms of history, ranging from dermatologic conditions, to famous dermatologists and physicians who have advanced the field of both dermatology and medicine, to the different countries that promoted the development of scientists, researchers and physicians alike.

It was decided that the bibliographic record would encompass journals, books and a compilation of obituaries. A pertinent question is whether a manually created bibliographic project is still warranted in the 21^st century. In short, yes. While Index …

Bullous Leukemia Cutis In A Patient With T-Cell Prolymphocytic Leukemia, Sarah Y. Siu, Qiujie Jiang, Ashley Gochoco, Jason B. Lee, Md, Joya Sahu, Onder Alpdogan, Jerald Z. Gong, Md

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

Amlodipine-Induced Hypersensitivity Reaction Mimicking Cd30(+) Mycosis Fungoides., Ashley Gochoco, Elizabeth Jones, Christine Soutendijk, Onder Alpdogan, Wenyin Shi, Joya Sahu

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

An Atrophic Plaque On The Breast Six Years After Breast Reconstruction Surgery, Michelle Khurana, Richard Torbeck, Young C. Kauh

Department of Dermatology and Cutaneous Biology Faculty Papers

No abstract provided.

Lasers In Tattoo And Pigmentation Control: Role Of The Picosure(®) Laser System., Richard Torbeck, Richard Bankowski, Sarah Henize, Nazanin Saedi

Department of Dermatology and Cutaneous Biology Faculty Papers

BACKGROUND AND OBJECTIVES: The use of picosecond lasers to remove tattoos has greatly improved due to the long-standing outcomes of nanosecond lasers, both clinically and histologically. The first aesthetic picosecond laser available for this use was the PicoSure(®) laser system (755/532 nm). Now that a vast amount of research on its use has been conducted, we performed a comprehensive review of the literature to validate the continued application of the PicoSure(®) laser system for tattoo removal.

STUDY DESIGN AND METHODS: A PubMed search was conducted using the term "picosecond" combined with "laser", "dermatology", and "laser tattoo removal".

RESULTS: A total …

Dsg2 Increases Exosome Release And Enhances Egfr/C-Src Content: A Mechanism For Intercellular Mitogenic Effect, Andrew M. Overmiller, Jennifer A. Pierluissi, Peter J Wermuth, Ubaldo E. Martinez-Outshoorn, Md, Madalina Tuluc, Adam J. Luginbuhl, Joseph Curry, Larry A. Harshyne, James K. Wahl, Iii, Andrew P. South, M G Mahoney

Department of Dermatology and Cutaneous Biology Posters

Abstract:

Exosomes are nanoscale membrane-derived vesicles that are secreted by cancer cells and play a critical role in modulating the tumor microenvironment and disease pathogenesis. Dsg2, a desmosomal cadherin often overexpressed in skin malignancies including squamous cell carcinoma (SCC), can activate EGFR/c-Src signaling and promote oncogenesis. We sought to address the potential role of Dsg2 in exosome biogenesis and intercellular signaling in SCC. Here, purified exosomes from SCC cells and head/neck SCC patient sera were enriched with a processed 65 kDa membrane-associated C-terminal fragment of Dsg2. Cells overexpressing Dsg2 had increased exosome release and protein content and produced particles enriched …

Endothelial To Mesenchymal Transition (Endomt) In The Pathogenesis Of Human Fibrotic Diseases., Sonsoles Piera-Velazquez, Fabian A. Mendoza, Sergio A. Jimenez

Jefferson Institute of Molecular Medicine Papers and Presentations

Fibrotic diseases encompass a wide spectrum of clinical entities including systemic fibrotic diseases such as systemic sclerosis, sclerodermatous graft versus host disease, nephrogenic systemic fibrosis, and IgG₄-associated sclerosing disease, as well as numerous organ-specific disorders including radiation-induced fibrosis, and cardiac, pulmonary, liver, and kidney fibrosis. Although their causative mechanisms are quite diverse, these diseases share the common feature of an uncontrolled and progressive accumulation of fibrous tissue macromolecules in affected organs leading to their dysfunction and ultimate failure. The pathogenesis of fibrotic diseases is complex and despite extensive investigation has remained elusive. Numerous studies have identified myofibroblasts as the cells …

Endothelial To Mesenchymal Transition (Endomt) In The Pathogenesis Of Systemic Sclerosis-Associated Pulmonary Fibrosis And Pulmonary Arterial Hypertension. Myth Or Reality?, Sergio A. Jimenez, Sonsoles Piera-Velazquez

Department of Dermatology and Cutaneous Biology Faculty Papers

Systemic Sclerosis (SSc) is a systemic autoimmune disease characterized by progressive fibrosis of skin and multiple internal organs and severe functional and structural microvascular alterations. SSc is considered to be the prototypic systemic fibrotic disorder. Despite currently available therapeutic approaches SSc has a high mortality rate owing to the development of SSc-associated interstitial lung disease (ILD) and pulmonary arterial hypertension (PAH), complications that have emerged as the most frequent causes of disability and mortality in SSc. The pathogenesis of the fibrotic process in SSc is complex and despite extensive investigation the exact mechanisms have remained elusive. Myofibroblasts are the cells …

Ectopic Mineralization Of Cartilage And Collagen-Rich Tendons And Ligaments In Enpp1asj-2j Mice., Jieyu Zhang, Nathaniel A Dyment, David W Rowe, Sarah Y Siu, John P Sundberg, Jouni Uitto, Qiaoli Li

Department of Dermatology and Cutaneous Biology Faculty Papers

Generalized arterial calcification of infancy (GACI), an autosomal recessive disorder caused by mutations in the ENPP1 gene, manifests with extensive mineralization of the cardiovascular system. A spontaneous asj-2J mutant mouse has been characterized as a model for GACI. Previous studies focused on phenotypic characterization of skin and vascular tissues. This study further examined the ectopic mineralization phenotype of cartilage, collagen-rich tendons and ligaments in this mouse model. The mice were placed on either control diet or the "acceleration diet" for up to 12 weeks of age. Soft connective tissues, such as ear (elastic cartilage) and trachea (hyaline cartilage), were processed …

Pressure To Publish For Residency Applicants In Dermatology, Jordan V. Wang, Matthew S. Keller

Department of Dermatology and Cutaneous Biology Faculty Papers

As it grows increasingly difficult to match into a dermatology residency program each year, there is a widening gap in research accomplishments between those who have and have not matched successfully. Applicants should be aware of the current trends in order to maximize their chances of matching. Such research inequality may subsequently lead to increases in the pressure to publish and the incidence of academic misrepresentation. Academic dermatology programs should be aware of these issues in order to help their students successfully match and exercise caution when reviewing the curricula vitae of applicants. We believe that student mentors in dermatology …

C-Src/Cav1-Dependent Activation Of The Egfr By Dsg2., Andrew M. Overmiller, Kathleen P. Mcguinn, Brett J. Roberts, Felicia Cooper, Donna M. Brennan-Crispi, Takahiro Deguchi, Sirkku Peltonen, James K. Wahl, Mỹ G. Mahoney

Department of Dermatology and Cutaneous Biology Faculty Papers

The desmosomal cadherin, desmoglein 2 (Dsg2), is deregulated in a variety of human cancers including those of the skin. When ectopically expressed in the epidermis of transgenic mice, Dsg2 activates multiple mitogenic signaling pathways and increases susceptibility to tumorigenesis. However, the molecular mechanism responsible for Dsg2-mediated cellular signaling is poorly understood. Here we show overexpression as well as co-localization of Dsg2 and EGFR in cutaneous SCCs in vivo. Using HaCaT keratinocytes, knockdown of Dsg2 decreases EGFR expression and abrogates the activation of EGFR, c-Src and Stat3, but not Erk1/2 or Akt, in response to EGF ligand stimulation. To determine whether …