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https://www.readbyqxmd.com/read/28531216/impact-of-mutations-in-toll-like-receptor-pathway-genes-on-esophageal-carcinogenesis
#1
Daffolyn Rachael Fels Elliott, Juliane Perner, Xiaodun Li, Martyn F Symmons, Brett Verstak, Matthew Eldridge, Lawrence Bower, Maria O'Donovan, Nick J Gay, Rebecca C Fitzgerald
Esophageal adenocarcinoma (EAC) develops in an inflammatory microenvironment with reduced microbial diversity, but mechanisms for these influences remain poorly characterized. We hypothesized that mutations targeting the Toll-like receptor (TLR) pathway could disrupt innate immune signaling and promote a microenvironment that favors tumorigenesis. Through interrogating whole genome sequencing data from 171 EAC patients, we showed that non-synonymous mutations collectively affect the TLR pathway in 25/171 (14...
May 22, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28529555/detection-of-p53-and-bcl-2-expression-in-cutaneous-hemangioma-through-the-quantum-dot-technique
#2
Tian Tang, Duan-Lian Zhang
Hemangioma is one of the most common types of infantile vascular benign tumor. The aim of the present study was to investigate the role of B-cell lymphoma 2 (Bcl-2) and tumor protein p53 (p53) in the proliferation and apoptosis of hemangioma cells. A total of 38 paraffin-embedded hemangioma specimens (16 males and 22 females) and another 5 paraffin-embedded healthy surrounding tissue samples, collected between January 2007 and December 2010, were obtained from the Department of Pathology at Renmin Hospital of Wuhan University (Wuhan, China)...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28526809/tumor-cell-specific-aim2-regulates-growth-and-invasion-of-cutaneous-squamous-cell-carcinoma
#3
Mehdi Farshchian, Liisa Nissinen, Elina Siljamäki, Pilvi Riihilä, Minna Piipponen, Atte Kivisaari, Markku Kallajoki, Reidar Grénman, Juha Peltonen, Sirkku Peltonen, Koen D Quint, Jan Nico Bouwes Bavinck, Veli-Matti Kähäri
Cutaneous squamous cell carcinoma (cSCC) is the most common metastatic skin cancer. Inflammation is a typical feature in cSCC progression. Analysis of the expression of inflammasome components in cSCC cell lines and normal human epidermal keratinocytes revealed upregulation of the expression of AIM2 mRNA and protein in cSCC cells. Elevated levels of AIM2 mRNA were noted in cSCCs in vivo compared with normal skin. Strong and moderate tumor cell specific expression of AIM2 was detected with immunohistochemistry (IHC) in sporadic human cSCCs in vivo, whereas expression of AIM2 was moderate in cSCC in situ (cSCCIS) and low or absent in actinic keratosis (AK) and normal skin...
May 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525910/cutaneous-apocrine-carcinoma-with-an-in-situ-component-and-histiocytoid-and-signet-ring-cells
#4
Jérémie Berdugo, Vincent Dumont-Mackay, Sophie Brissy-Lachery, Yves E Leclerc, Josée Doyon, Andrew Mitchell, Tony Petrella, Delphine Désy
We present a case of cutaneous apocrine carcinoma arising in the axilla of a 71-year-old man. The tumor had a significant component of histiocytoid and signet-ring cells as well as in situ carcinoma within the apocrine glands. The cells expressed GATA3, gross cystic disease fluid protein 15, androgen receptor, and E-cadherin. Estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 were negative. Clinical correlation was required to rule out a metastasis from the breast or the gastrointestinal tract...
June 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28525403/genetic-diseases-associated-with-an-increased-risk-of-skin-cancer-development-in-childhood
#5
Alexander L Fogel, Kavita Y Sarin, Joyce M C Teng
PURPOSE OF REVIEW: Childhood skin cancers are relatively rare and may indicate an underlying genetic disorder. The increasing elucidation of genetic pathways is changing the diagnosis and management of genetic skin cancer susceptibility syndromes. In this review, we provide an overview of genetic conditions that predispose to skin cancer development in childhood and signs that providers should assess when evaluating affected individuals. RECENT FINDINGS: In basal cell nevus syndrome (BCNS), the patched2 (PTCH2) and suppressor of fused (SUFU) genes have been implicated in disease pathogenesis...
May 18, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28523199/de-novo-pten-mutation-in-a-young-boy-with-cutaneous-vasculitis
#6
Angela Mauro, Ebun Omoyinmi, Neil James Sebire, Angela Barnicoat, Paul Brogan
Phosphatase and tensin homolog (PTEN) is the protein encoded by the PTEN gene (10q23.3). PTEN mutations are related to a variety of rare diseases referred to collectively as PTEN hamartoma tumor syndromes (PHTS), which include Cowden Syndrome, Bannayan-Riley-Ruvalcaba syndrome, Proteus Syndrome, and Proteus-like syndrome. These diseases are associated with an increased risk of malignancy and for this reason an accurate and early diagnosis is essential in order to institute cancer surveillance. PTEN is a regulator of growth and homeostasis in immune system cells, although there are limited data describing immune dysregulation caused by PTEN mutations...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28522936/bladder-cancer-that-metastasized-to-the-skin-a-unique-presentation-that-signifies-poor-prognosis
#7
Tal Cohen, Daniel Ricchiuti, Mark Memo
In the United States in 2015, an estimated 74,000 new cases of bladder cancer were diagnosed and approximately 16,000 deaths were due to bladder cancer. We present a rare case of a patient with aggressive bladder cancer who presented with multiple inguinal and scrotal skin lesions that were proven to be metastatic urothelial malignancy. Bladder malignancy can involve the skin by direct tumor invasion, hematogenous routes, lymphatic spread, and direct seeding due to iatrogenic implantation. The cutaneous lesions have an extremely variable appearance, are resistant to therapies, and signify a dismal prognosis...
2017: Reviews in Urology
https://www.readbyqxmd.com/read/28522871/mug-mel2-a-novel-highly-pigmented-and-well-characterized-nras-mutated-human-melanoma-cell-line
#8
Beate Rinner, Greta Gandolfi, Katharina Meditz, Marie-Therese Frisch, Karin Wagner, Alessia Ciarrocchi, Federica Torricelli, Raili Koivuniemi, Johanna Niklander, Bernadette Liegl-Atzwanger, Birgit Lohberger, Ellen Heitzer, Nassim Ghaffari-Tabrizi-Wizsy, Dagmar Zweytick, Iris Zalaudek
NRAS mutation in melanoma has been associated with aggressive tumor biology and poor prognosis. Although targeted therapy has been tested for NRAS mutated melanoma, response rates still appear much weaker, than in BRAF mutated melanoma. While plenty of cell lines exist, however, only few melanogenic cell lines retain their in vivo characteristics. In this work we present an intensively pigmented and well-characterized cell line derived from a highly aggressive NRAS mutated cutaneous melanoma, named MUG-Mel2...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28522111/incidence-and-trends-of-basal-cell-carcinoma-and-cutaneous-squamous-cell-carcinoma-a-population-based-study-in-olmsted-county-minnesota-2000-to-2010
#9
John G Muzic, Adam R Schmitt, Adam C Wright, Dema T Alniemi, Adeel S Zubair, Jeannette M Olazagasti Lourido, Ivette M Sosa Seda, Amy L Weaver, Christian L Baum
OBJECTIVE: To determine population-based incidence estimates of basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (cSCC). PATIENTS AND METHODS: We reviewed the medical records of a population-based cohort diagnosed with nonmelanoma skin cancer between January 2, 2000, and December 31, 2010. The age- and sex-adjusted incidence rates were calculated and compared with estimates from previous periods. RESULTS: The age-adjusted BCC incidence (cases per 100,000 person-years) was 360...
May 10, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28514049/canine-cutaneous-plasmacytosis-21-cases-2005-2015
#10
B O Boostrom, A S Moore, C J DeRegis, C Robat, K Freeman, D H Thamm
BACKGROUND: Cutaneous plasmacytosis (CP) is a syndrome of multiple cutaneous plasma cell tumors, in the absence of multiple myeloma. Although rare in both humans and dogs, treatment recommendations are usually extrapolated from multiple myeloma protocols. To date, no case series of CP have been described in the veterinary literature. HYPOTHESIS/OBJECTIVES: To describe clinical presentation, determine treatment response rates and duration, and report overall survival of dogs with CP...
May 17, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28512730/examining-the-role-of-transmission-of-chelonid-alphaherpesvirus-5
#11
Andrea Chaves, A Alonso Aguirre, Kinndle Blanco-Peña, Andrés Moreira-Soto, Otto Monge, Ana M Torres, José L Soto-Rivas, Yuanan Lu, Didiher Chacón, Luis Fonseca, Mauricio Jiménez, Gustavo Gutiérrez-Espeleta, Michael Lierz
Marine turtle fibropapillomatosis (FP) is a devastating neoplastic disease characterized by single or multiple cutaneous and visceral fibrovascular tumors. Chelonid alphaherpesvirus 5 (ChHV5) has been identified as the most likely etiologic agent. From 2010 to 2013, the presence of ChHV5 DNA was determined in apparently normal skin, tumors and swab samples (ocular, nasal and cloacal) collected from 114 olive ridley (Lepidochelys olivacea) and 101 green (Chelonia mydas) turtles, with and without FP tumors, on the Pacific coasts of Costa Rica and Nicaragua...
May 16, 2017: EcoHealth
https://www.readbyqxmd.com/read/28512236/focus-on-cutaneous-and-uveal-melanoma-specificities
#12
REVIEW
Charlotte Pandiani, Guillaume E Béranger, Justine Leclerc, Robert Ballotti, Corine Bertolotto
Cutaneous melanoma (CM) and uveal melanoma (UM) derive from cutaneous and uveal melanocytes that share the same embryonic origin and display the same cellular function. However, the etiopathogenesis and biological behaviors of these melanomas are very different. CM and UM display distinct landscapes of genetic alterations and show different metastatic routes and tropisms. Hence, therapeutic improvements achieved in the last few years for the treatment of CM have failed to ameliorate the clinical outcomes of patients with UM...
April 15, 2017: Genes & Development
https://www.readbyqxmd.com/read/28508832/disease-characteristics-and-treatment-attributes-of-patients-admitted-to-the-oncology-ward-of-a-tertiary-care-government-hospital
#13
Virender Suhag, B S Sunita, Pankaj Vats, Arti Sarin, A K Singh, Mayuri Jain
BACKGROUND: The burden of oncology patients in the most developing countries including India has witnessed a steady, progressive, and significant upward trend attributed mainly to increased life span, availability of better imaging modalities, increased awareness, and lifestyle and environmental changes. The management of such patients in government setup often presents lots of challenges such as advanced stage of presentation, existence of medical comorbid conditions, scarcity of beds, and long multimodal treatment often complicated with therapy-induced toxicities...
January 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28508684/cutaneous-mixed-tumor-and-recurrent-laryngeal-squamous-cell-carcinoma-with-tyrosine-rich-crystalloids-the-good-the-bad-and-the-pretty
#14
Carlos N Prieto-Granada, Manjula Garapati
No abstract text is available yet for this article.
May 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28504999/tumor-microenvironment-and-checkpoint-molecules-in-primary-cutaneous-diffuse-large-b-cell-lymphoma-new-therapeutic-targets
#15
Christina Mitteldorf, Arbeneshe Berisha, Monique C Pfaltz, Sigrid M C Broekaert, Michael P Schön, Katrin Kerl, Werner Kempf
Programmed death ligand 1 (PD-L1) is expressed by 20% to 57% of systemic diffuse large B cell lymphomas (DLBCLs). PD-L1 expression in primary cutaneous DLBCL (pcDLBCL) has not been studied so far. Sixteen paraffin-embedded tissue samples of pcDLBCL (13 leg type [LT], 3 others [OT]) were investigated for PD-1, PD-L1, and CD33 expression and the cellular composition of the tumor microenvironment, focusing on myeloid-derived suppressor cells (MDSCs) and tumor-associated macrophages. Membrane-bound PD-L1 expression by the tumor cells was observed in all samples, albeit to a variable extent (19...
May 12, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28503494/intratumoral-and-peritumoral-mast-cells-in-malignant-melanoma-an-immunohistochemical-study
#16
Parvin Rajabi, Azam Bagheri, Mohssen Hani
BACKGROUND: The aim of the current study was to determine mast cell infiltration in malignant melanoma by immunohistochemistry method and its relationship with some of the cancer prognostic factors, including age, sex, and depth of the tumor. MATERIALS AND METHODS: In this retrospective analytic cross-sectional study, paraffin-embedded tissue blocks of patients with cutaneous malignant melanoma who had undergone excisional biopsy were studied. Mast cells count in studied cases in different stages of the tumor depth was evaluated by mast cell tryptase immunohistochemistry method...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28502876/novel-strategy-in-giant-cutaneous-squamous-cell-carcinoma-treatment-the-case-experience-in-a-combination-of-photodynamic-therapy-and-surgery
#17
Wenbo Bu, Yan Wang, Xu Chen, Fang Fang
Case A 90-year-old Chinese man presented to our hospital with a one-year history of a large neoplasm on his right cheek (figure). The patient did not have subjective symptoms but emitted an obvious stench. However, the patient has significant embarrassment and difficult on social interaction due to abnormal appearance and foul smell from lesion. A clinical examination showed that the tumor size was 7cm * 6.5cm * 1.5cm. An X-ray examination showed that the deep tumor was not associated with any bone destruction...
May 11, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28500815/oral-pentoxifylline-associated-with-pentavalent-antimony-a-randomized-trial-for-cutaneous-leishmaniasis
#18
Graça Brito, Mayra Dourado, Luiz Henrique Guimarães, Everson Meireles, Albert Schriefer, Edgar Marcelino de Carvalho, Paulo Roberto Lima Machado
AbstractCutaneous leishmaniasis (CL) by Leishmania braziliensis is associated with decreasing cure rates in Brazil. Standard treatment with pentavalent antimony (Sb(v)) cures only 50-60% of the cases. The immunopathogenesis of CL ulcer is associated with high interferon-γ and tumor necrosis factor (TNF) production. Pentoxifylline, a TNF inhibitor, has been successfully used in association with Sb(v) in mucosal and cutaneous leishmaniasis. This randomized, double-blind, and placebo-controlled trial aimed to evaluate the efficacy and safety of oral pentoxifylline plus Sb(v) versus placebo plus Sb(v) in patients with CL in Bahia, Brazil...
May 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28500640/dysregulation-of-the-mek-erk-mnk1-signaling-cascade-by-middle-t-antigen-of-the-trichoydsplasia-spinulosa-polyomavirus
#19
Julie H Wu, Deepika Narayanan, Rebecca A Simonette, Peter L Rady, Stephen K Tyring
BACKGROUND: Trichodysplasia spinulosa (TS) is a disfiguring folliculocentric cutaneous disease caused by infection with the trichodysplasia spinulosa polyomavirus (TSPyV). The TSPyV genome contains splice variants encoding the middle tumor (mT) antigen, although the potential role for TSPyV mT antigen in disease development remains unknown. OBJECTIVE: The current study was designed to investigate the mechanistic properties of TSPyV mT antigen, which may further our understanding of TS pathogenesis and provide insight into potential therapies...
May 13, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28497640/polarizable-crystals-in-apocrine-sweat-gland-tumors-a-series-of-three-cases
#20
Gina Johnson, Jerad M Gardner, Sara C Shalin
Polarizable calcium oxalate (CaOx) crystals have been well documented in breast biopsies, generally associated with benign apocrine metaplasia. In contrast, polarizable crystals are only rarely reported in skin adnexal neoplasms. We report three different cases of sweat gland tumors with polarizable crystals morphologically suggestive of CaOx: 1 apocrine hidrocystoma and 2 tubular apocrine adenomas. The histologic features were examined in 3 cases. Clinical presentation summary included 2 males and 1 female, ages 53 to 74, with lesions located on the left cheek, inferior vertex scalp and the left eyebrow...
May 12, 2017: Journal of Cutaneous Pathology
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