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https://www.readbyqxmd.com/read/29790147/sensitivity-and-specificity-of-ex-vivo-dermatoscopy-a-case-series
#1
Danijela Dobrosavljevic, Dimitrije Brasanac, Sofija Glumac, Sanja Radojevic, Lidija Matija, Dejana Stanisavljevic
BACKGROUND: Sensitivity and specificity of ex vivo dermatoscopy (EVD) for malignancy detection of skin tumors is unknown. We sought to assess whether the use of EVD could be a useful adjunct to histopathological diagnosis of pigmented skin tumors, including cases where complete clinical information is inadequate or missing. MATERIALS AND METHODS: EVD was performed on 195 excised, formalin-fixed pigmented skin tumors. RESULTS: Of 183 eligible lesions, 104 (56...
May 23, 2018: International Journal of Dermatology
https://www.readbyqxmd.com/read/29789760/high-dose-rate-brachytherapy-in-treatment-of-non-melanoma-skin-cancer-of-head-and-neck-region-preliminary-results-of-a-prospective-single-institution-study
#2
Bita Kalaghchi, Ebrahim Esmati, Reza Ghalehtaki, Marzieh Gomar, Ramin Jaberi, Soraya Gholami, Somayyeh Babaloui, Mansoureh Nabavi, Sarvazad Sotoudeh, Nezhat Khanjani, Ali Kazemian, Farnaz Amouzegar-Hashemi, Mahdi Aghili, Marzieh Lashkari
Purpose: Skin cancers are the most common human malignancy with increasing incidence. Currently, surgery is standard of care treatment for non-melanoma skin cancers. However, brachytherapy is a growing modality in the management of skin cancers. Therefore, we aimed to assess the outcome of patients with non-melanoma skin cancers treated by high-dose-rate (HDR) brachytherapy with surface mold technique. Material and methods: In this prospective study, we recruited patients with basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) of the skin who were candidates for definitive or adjuvant brachytherapy during 2013-2014...
April 2018: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/29789104/functionalized-caprolactone-polyethylene-glycol-based-thermo-responsive-hydrogels-of-silibinin-for-the-treatment-of-malignant-melanoma
#3
Behzad Sharif Makhmalzadeh, Ommoleila Molavi, Mohammad Reza Vakili, Hai-Feng Zhang, Amir Solimani, Hoda Soleymani Abyaneh, Raimar Loebenberg, Raymond Lai, Afsaneh Lavasanifar
PURPOSE: Silibinin, is a natural compound, which has shown anticancer activity in various malignancies. In this study, we evaluated the anticancer effects of silibinin in B16-F10 melanoma cells and developed a novel thermoresponsive hydrogel for local delivery of this compound. METHOD: A thermoresponsive hydrogel loaded with silibinin was prepared using triblock copolymers of poly[(α-benzyl carboxylate-e-caprolactone)-co-(α-carboxyl-e-caprolactone)]ran-b-PEG-b-[(α-benzyl carboxylate-e-caprolactone) -co-(α-carboxyl-e-caprolactone)]ran (PCBCL-b-PEG-b-PCBCL), namely PolyGelTM, and compared with a Pluronic F-127 formulation of silibinin...
2018: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29786420/bacteria-driven-hypoxia-targeting-for-combined-biotherapy-and-photothermal-therapy
#4
Wenfei Chen, Ying Wang, Ming Qin, Xudong Zhang, Zhirong Zhang, Xun Sun, Zhen Gu
The facultative anaerobe Salmonella strain VNP20009 selectively colonizes into tumors following systemic injection due to its preference for the hypoxia in the tumor cores. However, the Phase 1 Clinical Trial of VNP20009 has been terminated mainly due to its weak anti-tumor effects and exhibition of dose-dependent toxicity. Here we leveraged the advantages of VNP20009 biotherapy together with polydopamine-mediated photothermal therapy in order to enhance the antitumor efficacy toward malignant melanoma. VNP20009 was coated with polydopamine via oxidation and self-polymerization, which was then injected into tumor-bearing mice via the tail vein...
May 22, 2018: ACS Nano
https://www.readbyqxmd.com/read/29786069/ve-cadherin-promotes-vasculogenic-mimicry-by-modulating-kaiso-dependent-gene-expression
#5
Daniel Delgado-Bellido, Mónica Fernández-Cortés, María Isabel Rodríguez, Santiago Serrano-Sáenz, Arkaitz Carracedo, Angel Garcia-Diaz, F Javier Oliver
Aberrant extra-vascular expression of VE-cadherin (VEC) has been observed in metastasis associated with vasculogenic mimicry (VM); however, the ultimate reason why non-endothelial VEC favors the acquisition of this phenotype is not established. In this study, we show that human malignant melanoma cells have a constitutively high expression of phoshoVEC (pVEC) at Y658; pVEC is a target of focal adhesion kinase (FAK) and forms a complex with p120-catenin and the transcriptional repressor kaiso in the nucleus...
May 21, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29785370/primary-amelanotic-malignant-melanoma-of-the-male-urethra-with-inguinal-lymph-node-metastasis-successfully-controlled-by-nivolumab-a-case-report
#6
Takashi Tokita, Takashi Kawahara, Yusuke Ito, Sohgo Tsutsumi, Koichi Abe, Kazuhiro Namura, Futoshi Sano, Koichi Shioi, Daiji Takamoto, Yasushi Yumura, Noboru Nakaigawa, Masahiro Yao, Hiroji Uemura, Hidefumi Wada, Yukio Tsuura, Kazuki Kobayashi
We report a rare case of primary amelanotic malignant melanoma of the male urethra. A 65-year-old man with a urethral mass was referred to our hospital. A pathological diagnosis of a biopsy specimen revealed malignant melanoma. Thereafter, the patient underwent partial penectomy. The histopathological diagnosis was amelanotic malignant melanoma of the urethra. The patient had received DAV-Feron in an adjuvant setting; however, PET-CT revealed multiple metastasis. After receiving more than 10 cycles of nivolumab, the accumulation of FDG was no longer observed on PET-CT...
May 2018: Urology Case Reports
https://www.readbyqxmd.com/read/29785325/screening-for-malignant-melanoma-a-critical-assessment-in-historical-perspective
#7
Wolfgang Weyers
Screening for melanoma has been advocated for many years because early detection and excision have been regarded as the most important measure to lower mortality from that neoplasm. In the past decade, concern has been raised by epidemiologists that screening might result in excision chiefly of "inconsequential cancer," i.e., melanomas that would never have progressed into life-threatening tumors, a phenomenon referred to by the misleading term "overdiagnosis." Without any firm evidence, that speculation has been embraced worldwide, and incipient melanomas have been trivialized...
April 2018: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29785321/comment-on-screening-for-malignant-melanoma-a-critical-assessment-in-historical-perspective
#8
Ashfaq A Marghoob, Michael Marchetti, Allan C Halpern, Klaus J Busam
No abstract text is available yet for this article.
April 2018: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/29784239/paraneoplastic-syndromes-in-ophthalmology
#9
REVIEW
A Bussat, S Langner-Lemercier, A Salmon, F Mouriaux
Paraneoplastic syndromes involving the visual system are a heterogeneous group of disorders occurring in the setting of systemic malignancy. They are unrelated to local tumor invasion or metastasis and unexplained by nutritional, metabolic, infectious or iatrogenic causes. The presence of antibodies may aid in the diagnosis of a paraneoplastic syndrome, although this is not an absolute requirement. Chorioretinal involvement is seen in CAR (cancer-associated retinopathy) syndrome, MAR (melanoma-associated retinopathy) syndrome, paraneoplastic vitelliform maculopathy, and bilateral diffuse uveal melanocytic proliferation...
May 18, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29782381/high-baseline-neutrophil-to-lymphocyte-ratio-predicts-worse-outcome-in-patients-with-metastatic-braf-positive-melanoma-treated-with-braf-and-mek-inhibitors
#10
Paweł Teterycz, Paulina Jagodzińska-Mucha, Bożena Cybulska-Stopa, Anna Mariuk-Jarema, Katarzyna Kozak, Hanna Koseła-Paterczyk, Anna M Czarnecka, Marcin Rajczykowski, Robert Dziura, Łukasz Galus, Jacek Mackiewicz, Tomasz Świtaj, Anna Klimczak, Slawomir Falkowski, Rafał Suwiński, Marek Ziobro, Iwona Ługowska, Piotr Rutkowski
Neutrophil-to-lymphocyte ratio (NLR) has been shown to be prognostic in several solid malignancies. There are limited data regarding its value during novel therapies in patients with melanoma. The aim of the study was to assess the practical utility of this ratio in patients with BRAF-mutant melanoma treated with a combination of BRAF and MEK inhibitors (BRAFi/MEKi). We included 215 patients with inoperable or metastatic melanoma who underwent BRAFi/MEKi treatment between October 2015 and June 2017. Baseline NLR and other complete blood count-derived inflammatory markers were tested for association with overall survival and progression-free survival in univariate and multivariate models...
May 18, 2018: Melanoma Research
https://www.readbyqxmd.com/read/29782304/role-of-in-vivo-reflectance-confocal-microscopy-in-the-analysis-of-melanocytic-lesions
#11
Elena-Daniela Serban, Francesca Farnetani, Giovanni Pellacani, Maria Magdalena Constantin
Worldwide melanoma incidence and mortality are increasing (1). Despite the ongoing research, advanced melanoma is still incurable; therefore, the most appropriate solution seems to be early detection combined with complete surgical excision (2). Since the diagnostic protocol of suspicious lesions includes a complete excision with safety margins (2), the problem of unnecessary scarring is significant. The real challenge in this case is to have a properly formulated diagnosis before acquiring a biopsy. Currently available non-invasive techniques are coherence tomography, digital dermoscopy, and reflectance confocal microscopy...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782294/the-value-of-high-frequency-20-mhz-ultrasonography-for-preoperative-measurement-of-cutaneous-melanoma-thickness
#12
Andrea Kozárová, Marek Kozár, Ingrid Tonhajzerová, Táňa Pappová, Eva Minariková
High-frequency ultrasonography has become an important diagnostic tool in dermatovenerology. It is used for assessment of the cutaneous layers in diverse benign and malignant skin lesions and diseases. Herein we present the practical value of preoperative measurement of cutaneous melanoma thickness, the explanation of the possible reasons for different sonographic and histologic Breslow thickness, and the practical importance of high-frequency 20 MHz ultrasonography in preoperative measurements of cutaneous melanoma thickness...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781749/oncogenic-pkc-%C3%AE-activates-vimentin-during-epithelial-mesenchymal-transition-in-melanoma-a-study-based-on-pkc-%C3%AE-and-pkc-%C3%AE-specific-inhibitors
#13
Wishrawana S Ratnayake, Christopher A Apostolatos, André H Apostolatos, Ryan J Schutte, Monica A Huynh, David A Ostrov, Mildred Acevedo-Duncan
Melanoma is one of the fastest growing cancers in the United States and is accompanied with a poor prognosis owing to tumors being resistant to most therapies. Atypical protein kinase Cs (aPKC) are involved in malignancy in many cancers. We previously reported that aPKCs play a key role in melanoma's cell motility by regulating cell signaling pathways which induce epithelial-mesenchymal Transition (EMT). We tested three novel inhibitors; [4-(5-amino-4-carbamoylimidazol-1-yl)-2,3-dihydroxycyclopentyl] methyl dihydrogen phosphate (ICA-1T) along with its nucleoside analog 5-amino-1-((1R,2S,3S,4R)-2,3-dihydroxy-4-methylcyclopentyl)-1H-imidazole-4-carboxamide (ICA-1S) which are specific to protein kinase C-iota (PKC-ι) and 8-hydroxy-1,3,6-naphthalenetrisulfonic acid (ζ-Stat) which is specific to PKC-zeta (PKC-ζ) on cell proliferation, apoptosis, migration and invasion of two malignant melanoma cell lines compared to normal melanocytes...
May 21, 2018: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/29781534/lncrna-meg3-repressed-malignant-melanoma-progression-via-inactivating-wnt-signaling-pathway
#14
Peng Li, Ying Gao, Jun Li, Yu Zhou, Jing Yuan, Huiwen Guan, Peng Yao
Accumulating evidence has indicated that MEG3 can serve as a tumor suppressive lncRNA in various tumors. It is aberrantly expressed in multiple cancers. However, the biological roles of MEG3 in melanoma are poorly understood. Therefore, in our study, we concentrated on the biological mechanism of MEG3 in melanoma progression. First, we observed that MEG3 was obviously decreased in melanoma cells including A375, SK-MEL-1, B16, and A2058 cells compared to human epidermal melanocytes HEMa-LP. MEG3 was restored by transfecting LV-MEG3 in to A375 and A2058 cells...
May 21, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29781204/malignant-melanoma-with-osteosarcomatous-differentiation-in-a-lymph-node-metastasis
#15
Jasmine Saleh, Michael L Wang, Paul W Harms, Rajiv M Patel, Douglas R Fullen
Osteocartilaginous differentiation in malignant melanoma is rare and can pose a diagnostic challenge. In previously reported cases, melanomas were predominantly located on acral and mucosal sites with osteocartilaginous differentiation present in either primary or recurrent lesions. We report a case of a 52-year-old female with malignant melanoma located on the right upper back exhibiting osteosarcomatous differentiation only in the axillary lymph node metastasis. This case serves to highlight that the divergent differentiation can occur in lymph node metastases while being absent in the primary lesion...
May 20, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29780262/high-mortality-due-to-cutaneous-melanoma-in-norway-a-study-of-prognostic-factors-in-a-nationwide-cancer-registry
#16
Trude Eid Robsahm, Per Helsing, Yngvar Nilssen, Linda Vos, Syed Mohammad H Rizvi, Lars A Akslen, Marit B Veierød
Purpose: The purpose of this study was to examine why Norway has the highest rate of mortality due to cutaneous melanoma (CM) in Europe. The Norwegian Malignant Melanoma Registry (NMMR) enables the study of clinical and histopathological characteristics of patients who die due to CM. Results: The NMMR and the Norwegian Cause of Death Registry provided data on the clinical and histopathological factors as well as the date and cause of death, through June 2015 for all first invasive CMs diagnosed in 2008-2012 (n=8087)...
2018: Clinical Epidemiology
https://www.readbyqxmd.com/read/29779219/immunohistochemical-and-molecular-analysis-of-spitzoid-neoplasms-with-pulverocyte-subclones
#17
S M Amin, A M Haugh, J A Bubley, A E Verzì, E A Merkel, C Y Lee, V L Quan, E M Garfield, L M Sholl, B Zhang, P Gerami
BACKGROUND: Clonal naevi are characterized by a focal proliferation of pigmented melanocytes in an otherwise banal naevus. These subclones are often composed of aggregates of larger, epithelioid melanocytes with nuclear atypia and dusty-grey cytoplasmic pigmentation, which are referred to as 'pulverocytes', and this finding may lead to a misdiagnosis of malignant melanoma (MM). AIM: To characterize the significance of subclones of dusty-grey pigmented epithelioid melanocytes within spitzoid neoplasms...
May 20, 2018: Clinical and Experimental Dermatology
https://www.readbyqxmd.com/read/29778279/outcomes-after-surgical-resection-of-lower-eyelid-tumors-and-reconstruction-using-a-nasal-chondromucosal-graft-and-an-upper-eyelid-myocutaneous-flap
#18
S Lemaître, C Lévy-Gabriel, L Desjardins, M González-Candial, S Gardrat, R Dendale, N Cassoux, B Couturaud
INTRODUCTION: Surgical excision of large malignant lower eyelid tumors may cause important full-thickness eyelid defects. The reconstruction of such defects must restore the physiologic function of the eyelid and also re-establish an acceptable aesthetic result. MATERIALS AND METHODS: We report the outcomes of full-thickness excision of tumors extending over half of the horizontal lid length, followed by reconstruction using a nasal chondromucosal graft (coming from the ipsilateral ala of the nose) and an upper eyelid myocutaneous flap...
May 16, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29778085/braf-and-mek-inhibitor-therapy-eliminates-nestin-expressing-melanoma-cells-in-human-tumors
#19
Deon B Doxie, Allison R Greenplate, Jocelyn S Gandelman, Kirsten E Diggins, Caroline E Roe, Kimberly B Dahlman, Jeffrey A Sosman, Mark C Kelley, Jonathan M Irish
Little is known about the in vivo impacts of targeted therapy on melanoma cell abundance and protein expression. Here, 21 antibodies were added to an established melanoma mass cytometry panel to measure 32 cellular features, distinguish malignant cells, and characterize dabrafenib and trametinib responses in BRAFV 600mut melanoma. Tumor cells were biopsied before neoadjuvant therapy and compared to cells surgically resected from the same site after 4 weeks of therapy. Approximately 50,000 cells per tumor were characterized by mass cytometry and computational tools t-SNE/viSNE, FlowSOM, and MEM...
May 19, 2018: Pigment Cell & Melanoma Research
https://www.readbyqxmd.com/read/29777697/circrna_0084043-promote-malignant-melanoma-progression-via-mir-153-3p-snail-axis
#20
Wenkang Luan, Yan Shi, Zhou Zhou, Yun Xia, Jinlong Wang
Circular RNAs (circRNAs) has been found to play an important role in the regulation of multiple diseases, and participate in cancer development. However, the role of circRNA in malignant melanoma has not been reported. In this study, human circRNA microarray was used to screen the dysregulated circRNA in melanoma. We found that circRNA_0084043 was significantly up-regulated in melanoma tissue, and the result was replicated in a larger sample size. High circRNA_0084043 expression was an independent risk factor of overall survival in melanoma patients...
May 16, 2018: Biochemical and Biophysical Research Communications
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