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malignant melanoma

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https://www.readbyqxmd.com/read/28230715/a-multireferral-centre-retrospective-cohort-analysis-on-the-experience-in-treatment-of-metastatic-uveal-melanoma-and-utilization-of-sequential-liver-directed-treatment-and-immunotherapy
#1
Malinda Itchins, Paolo A Ascierto, Alexander M Menzies, Meredith Oatley, Serigne Lo, Dariush Douraghi-Zadeh, Timmothy Harrington, Richard Maher, Antonio M Grimaldi, Alexander Guminski
Metastatic uveal melanoma is a rare malignancy with a poor prognosis. To date, systemic therapy has been ineffective; however, there are few data on the benefits of anti-CTLA4 or anti-PD-1 antibodies in sequence with liver-directed therapy. A retrospective cohort analysis was carried out on 37 consecutive patients managed in a tertiary referral centre examining the safety and efficacy of treatment; patterns of care; and impact on survival. The sequential treatment with transarterial chemotherapy (TAC), systemic immunotherapy (IT) and systemic chemotherapy was reviewed...
February 22, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28230277/immune-checkpoint-blockade-biology-in-mouse-models-of-glioblastoma
#2
Alan T Yeo, Al Charest
Glioblastoma Multiforme (GBM) is a highly malignant primary brain cancer that is associated with abysmal prognosis. The median survival of GBM patients is ∼15 months and there have not been any significant advance in therapies in over a decade, leaving treatment options limited. There is clearly an unmet need for GBM treatment. Immunotherapies are treatments based on usurping the power of the host's immune system to recognize and eliminate cancer cells. They have recently proven to be a successful strategy for combating a variety of cancers...
February 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28229402/next-generation-sequencing-to-guide-treatment-of-advanced-melanoma
#3
Klaus G Griewank, Bastian Schilling
Next-generation sequencing (NGS) has provided significant insights into the pathogenesis of human malignancies. In advanced melanoma, two therapeutic avenues have appeared and have immediately become the standard of care, i.e. targeted therapy with small molecule inhibitors, and immune checkpoint blockade. Sequencing has always been essential for determining which patients may benefit from targeted therapies (e.g. the presence of BRAF mutations). While sequencing does not currently help recognize which patients might benefit from immune checkpoint blockade, recent data suggest that this may change...
February 22, 2017: American Journal of Clinical Dermatology
https://www.readbyqxmd.com/read/28226755/automatic-detection-of-melanoma-using-broad-extraction-of-features-from-digital-images
#4
M H Jafari, S Samavi, N Karimi, S M R Soroushmehr, K Ward, K Najarian, M H Jafari, S Samavi, N Karimi, S M R Soroushmehr, K Ward, K Najarian, K Ward, M H Jafari, S M R Soroushmehr, S Samavi, K Najarian, N Karimi
Automatic and reliable diagnosis of skin cancer, as a smartphone application, is of great interest. Among different types of skin cancers, melanoma is the most dangerous one which causes most deaths. Meanwhile, melanoma is curable if it were diagnosed in its early stages. In this paper we propose an efficient system for prescreening of pigmented skin lesions for malignancy using general-purpose digital cameras. These images can be captured by a smartphone or a digital camera. This could be beneficial in different applications, such as computer aided diagnosis and telemedicine applications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225968/atypical-cellular-blue-nevus-or-malignant-blue-nevus
#5
Luise Ribeiro Daltro, Lygia Bertalha Yaegashi, Rodrigo Abdalah Freitas, Bruno de Carvalho Fantini, Cacilda da Silva Souza
Blue nevus is a benign melanocytic lesion whose most frequent variants are dendritic (common) blue nevus and cellular blue nevus. Atypical cellular blue nevus presents an intermediate histopathology between the typical and a rare variant of malignant blue nevus/melanoma arising in a cellular blue nevus. An 8-year-old child presented a pigmented lesion in the buttock since birth, but with progressive growth in the last two years. After surgical excision, histopathological examination revealed atypical cellular blue nevus...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28225967/synchronous-melanomas-arising-within-nevus-spilus
#6
Maria Helena Toda Sanches de Brito, Cecília Silva Nunes de Moura Dionísio, Cândida Margarida Branco Martins Fernandes, Joana Cintia Monteiro Ferreira, Maria Joaninha Madalena de Palma Mendonça da Costa Rosa, Maria Manuela Antunes Pecegueiro da Silva Garcia
Nevus spilus is a melanocytic cutaneous lesion consisting of a light brown background macule with numerous superimposed darker maculopapular speckles. Melanoma arising from a nevus spilus is rare, with less than 40 cases reported to date. The absolute risk for malignant transformation is not well defined, lacking a standardized management approach. We report a new case of melanoma arising from nevus spilus, with the additional peculiarity of multifocality. We offer our recommendations for the management of the condition...
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28225857/malignant-melanoma-with-synchronous-thyroid-metastases-case-report-and-literature-review
#7
Maria Manuel Costa, Sandra Belo, João Capela-Costa, Jennifer Costa, Davide Carvalho
Thyroid metastases are rare in clinical practice. We describe the case of an 85-year-old woman who was referred to our department due to a multinodular goiter with compressive symptoms and subclinical hyperthyroidism. The patient was also undergoing evaluation for a polyp in her left nasal cavity, which was then diagnosed as a malignant melanoma of the nasal mucosa. A thoracoabdominal magnetic resonance imaging obtained for cancer staging revealed a > 50% tracheal obstruction caused by the goiter. The patient underwent simultaneous total thyroidectomy and melanoma excision...
February 16, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28225433/the-role-of-5-hydroxymethylcytosine-in-melanoma
#8
Feng-Juan Li, Li-Ming Li, Rui-Hua Zhang, Cui Xu, Pan Zhou, Jia Long, Gang Hu, Ming-Jun Jiang
Malignant melanoma is a highly aggressive neoplasia of melanocytic origin. In part because of the lack of effective treatment methods, the incidence and mortality rates of this disease continue to increase. Rapidly accumulating evidence suggests that dysregulation of epigenetic mechanisms, including DNA methylation/demethylation, chromatin modification, and remodeling, and diverse activities of noncoding RNAs, play a central role in the pathogenesis of melanoma. The epigenetic mark 5-hydroxymethylcytosine (5-hmC) has attracted interest since 2009, when it was shown that ten-eleven translocation proteins can enzymatically convert 5-methylcytosine into 5-hmC, a key intermediate of DNA demethylation...
February 20, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28224623/outcome-and-prognostic-factors-following-curative-intent-surgery-for-oral-tumours-in-dogs-234-cases-2004-to-2014
#9
B N Sarowitz, G J Davis, S Kim
OBJECTIVES: To describe the long-term outcomes and prognostic factors associated with curative-intent surgery for oral tumours in a large series of dogs. METHODS: Retrospective review of records for dogs with oral tumours treated with curative-intent surgery. Data collected included signalment, weight, surgical procedure, lymph node staging results, computed tomography results, tumour size, histopathology results including margin evaluation, complications, adjunctive therapies, local recurrence or metastasis, date and cause of death and owner satisfaction...
February 22, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28224168/differential-clinicopathological-features-in-spontaneous-regression-of-melanomas-and-melanocytic-naevi
#10
José M Martín, Isabel Pinazo, Esperanza Jordá, Carlos Monteagudo
The aim of this study was to determine the clinical, histological and/or immunohistochemical features that enable differential diagnosis of regression of melanocytic naevi from regression of melanomas. All melanocytic neoplasms with histologically-confirmed regression diagnosed in our hospital between 2002 and 2009 were reviewed retrospectively. Lamellar and delicate fibrosis were associated with melanocytic naevi (p < 0.0001 and p = 0.021, respectively). Compact fibrosis, high vessel density and higher number of granzyme B+ lymphocytes were associated with malignant melanoma (p = 0...
February 22, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28224120/oncolytic-virotherapy-including-rigvir-and-standard-therapies-in-malignant-melanoma
#11
REVIEW
Hani M Babiker, Irbaz Bin Riaz, Muhammad Husnain, Mitesh J Borad
The treatment of metastatic melanoma has evolved from an era where interferon and chemotherapy were the mainstay of treatments to an era where immunotherapy has become the frontline. Ipilimumab (IgG1 CTLA-4 inhibitor), nivolumab (IgG4 PD-1 inhibitor), pembrolizumab (IgG4 PD-1 inhibitor) and nivolumab combined with ipilimumab have become first-line therapies in patients with metastatic melanoma. In addition, the high prevalence of BRAF mutations in melanoma has led to the discovery and approval of targeted molecules, such as vemurafenib (BRAF kinase inhibitor) and trametinib (MEK inhibitor), as they yielded improved responses and survival in malignant melanoma patients...
2017: Oncolytic Virotherapy
https://www.readbyqxmd.com/read/28223541/targeting-growth-hormone-receptor-in-human-melanoma-cells-attenuates-tumor-progression-and-epithelial-mesenchymal-transition-via-suppression-of-multiple-oncogenic-pathways
#12
Reetobrata Basu, Shiyong Wu, John J Kopchick
Recent reports have confirmed highest levels of growth hormone (GH) receptor (GHR) transcripts in melanoma, one of the most aggressive forms of human cancer. Yet the mechanism of GH action in melanoma remains mostly unknown. Here, using human malignant melanoma cells, we examined the effects of GH excess or siRNA mediated GHR knock-down (GHRKD) on tumor proliferation, migration and invasion. GH promoted melanoma progression while GHRKD attenuated the same. Western blot analysis revealed drastic modulation of multiple oncogenic signaling pathways (JAK2, STAT1, STAT3, STAT5, AKT, mTOR, SRC and ERK1/2) following addition of GH or GHRKD...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28223438/dysregulated-gpcr-signaling-and-therapeutic-options-in-uveal-melanoma
#13
Vivian Chua, Dominic Lapadula, Clinita Randolph, Jeffrey L Benovic, Philip Wedegaertner, Andrew E Aplin
: Uveal melanoma (UM) is the most common primary intraocular malignant tumor in adults and arises from the transformation of melanocytes in the uveal tract. Even after treatment of the primary tumor, up to 50% of patients succumb to metastatic disease. The liver is the predominant organ of metastasis. There is an important need to provide effective treatment options for advanced stage UM. In order to provide the preclinical basis for new treatments, it is important to understand the molecular underpinnings of the disease...
February 21, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28223427/calcium-dependent-enhancement-by-extracellular-acidity-of-the-cytotoxicity-of-mitochondrial-inhibitors-against-melanoma
#14
Fumihito Noguchi, Shigeki Inui, Clare Fedele, Mark Shackleton, Satoshi Itami
Extracellular acidity is a hallmark of cancers and is independent of hypoxia. Since acidity potentiates malignant phenotypes, therapeutic strategies that enhance the targeting of oncogenic mechanisms in an acidic microenvironment should be effective. We report here that drugs which abrogate mitochondrial respiration show enhanced cytotoxicity against melanoma cells in a normoxic but acidic extracellular pH, independent from P53 mutations, BRAF (V600E) mutations and/or resistance against BRAF inhibitors. Conversely, the cytotoxicity against melanoma cells of mitochondrial inhibitors is impaired by a neutral or alkaline extracellular pH and in vivo systemic alkalinization with NaHCO3 enhanced subcutaneous tumor growth and lung metastasis of B16F10 cells in mice treated with the mitochondrial inhibitor phenformin...
February 21, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28223235/interleukin-32-inflammation-and-cancer
#15
REVIEW
Jin Tae Hong, Dong Ju Son, Chong Kil Lee, Do-Young Yoon, Dong Hun Lee, Mi Hee Park
Interleukin-32 (IL-32) is a novel cytokine involved in inflammation and cancer development. IL-32 gene consists of eight small exons, and IL-32 mRNA has nine alternative spliced isoforms, and was thought to be secreted because it contains an internal signal sequence and lacks a transmembrane region. IL-32 is initially expressed selectively in activated T cells by mitogen and activated NK cells and their expression is strongly augmented by microbes, mitogens, and other cytokines. The IL-32 is induced mainly by pathogens and pro-inflammatory cytokines, but IL-32 is more prominent in immune cells than in non-immune tissues...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28222242/obesity-and-melanoma-could-fat-be-fueling-malignancy
#16
REVIEW
Emily Clement, Ikrame Lazar, Catherine Muller, Laurence Nieto
Over the last decade, it has become increasingly clear that adipose tissue, and particularly adipocytes, contribute to tumor progression. Obesity, an ever-increasing worldwide phenomenon, exacerbates this effect. The influence of obesity on melanoma remains poorly studied, although recent data does underline an association between the two diseases in both humans and murine models. Herein, we review the impact of obesity on melanoma incidence and progression and discuss the underlying mechanisms known to be involved...
February 21, 2017: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/28222231/two-cases-of-anti-programmed-cell-death-1-associated-bullous-pemphigoid-like-disease-and-eruptive-keratoacanthomas-featuring-combined-histopathology
#17
Justin P Bandino, David M Perry, Christina E Clarke, Richard M Marchell, Dirk M Elston
Programmed cell death protein 1 (PD-1) inhibitors (pembrolizumab, nivolumab) are novel immunotherapies revolutionizing the management of advanced malignancy with an improved adverse effect profile, yet the immune-related side effects are still being characterized.(1,2) We report the unique concurrence of bullous pemphigoid-like disease (BP) with keratoacanthomas and squamous cell carcinomas in two patients receiving anti-PD-1 immunotherapy for metastatic melanoma. This article is protected by copyright. All rights reserved...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28222225/daylight-photodynamic-therapy-vs-conventional-photodynamic-therapy-as-skin-cancer-preventive-treatment-in-patients-with-face-and-scalp-cancerization-an-intra-individual-comparison-study
#18
Elena Sotiriou, Demetrios Ioannides, Fotini Vrani, Elizabeth Lazaridou, Efstratios Vakirlis, Aimilios Lallas, Zoe Apalla
BACKGROUND: Individuals with medical history of non-melanoma skin cancers (NMSCs) usually develop multiple and/or recurrent malignant lesions around the site of the primary neoplasm. The latter represents the clinical expression of the "field cancerization" theory; supporting the presence of multiple malignant clones of dysplastic keratinocytes over the entire epithelium that potentially can progress into clinical lesions. Taking into consideration that the burden of NMSCs on public health and health-care cost is high, adequate control of recurrences and management of field change is challenging...
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28221211/a-rare-case-of-ck20-ck7-double-negative-merkel-cell-carcinoma
#19
Mary D Le, Luke H OʼSteen, David S Cassarino
The authors present a case of Merkel cell carcinoma (MCC) with unique immunohistochemical staining characteristics. A 57-year-old woman presented with a firm 0.3 cm tan papule on her left nasal-labial fold that was reportedly increasing in size and bleeding. She had a history of multiple head and neck actinic keratoses, papillary thyroid carcinoma, and a family history of an uncle with melanoma. The clinical differential diagnosis was "non-melanoma skin cancer." Histological examination showed a markedly atypical-appearing basaloid neoplasm, present mostly in the dermis, with focal pagetoid spread into the epidermis...
March 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28219779/correlations-of-egf-g1380a-bfgf-c754g-and-vegf-t460c-polymorphisms-with-malignant-melanoma-susceptibility-and-prognosis-a-case-control-study
#20
Xin-Hua Wang, Zi-Wen Long
This case-control study aims to investigate the correlations of EGF G1380A, bFGF C754G and VEGF T460C polymorphisms with the susceptibility and prognosis of malignant melanoma. A total of 153 patients with multiple primary melanomas were collected as the case group and another 170 healthy individuals were selected as the control group. ELISA and PCR-RFLP were performed to test the serum level of VEGF and to analyze the genotype as well as allele frequencies of VEGF T460C, EGF G1380A, and bFGF C754G, respectively...
February 17, 2017: Gene
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