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Melanoma in situ

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https://www.readbyqxmd.com/read/28346486/grem1-is-expressed-in-the-cancer-associated-myofibroblasts-of-basal-cell-carcinomas
#1
Hye Sung Kim, Myung Soo Shin, Min Seok Cheon, Jae Wang Kim, Cheol Lee, Woo Ho Kim, Young Sill Kim, Bo Gun Jang
Cancer-associated fibroblasts (CAFs) play important roles in cancer progression through their complex interactions with cancer cells. The secreted bone morphogenetic protein antagonist, gremlin1 (GREM1) is expressed by the CAFs of basal cell carcinomas (BCCs), and promotes the growth of cancer cells. In this study, we investigated the expression of GREM1 mRNAs in various benign and malignant skin tumors, including various BCC subtypes. Analysis by RNA in situ hybridization (ISH) revealed that fibroblasts in the scar tissue expressed GREM1 and α-smooth muscle actin (α-SMA), whereas resident fibroblasts in the dermis of the normal skin did not express GREM1...
2017: PloS One
https://www.readbyqxmd.com/read/28342269/acral-lentiginous-melanoma-versus-other-melanoma-a-single-center-analysis-in-japan
#2
Maiko Wada, Takamichi Ito, Gaku Tsuji, Takeshi Nakahara, Akihito Hagihara, Masutaka Furue, Hiroshi Uchi
We summarize herein our 14-year experience of conventional treatment outcomes before the era of molecular-targeted therapy and immunotherapy. Specifically, we conducted a retrospective review of our 252 patients with primary cutaneous melanoma (acral lentiginous melanoma [ALM], n = 121; non-acral lentiginous melanoma [non-ALM], n = 131), and compared the prognostic factors between ALM and non-ALM. Melanoma-specific survival and disease-free survival were estimated using the Kaplan-Meier method. Regarding the results, all patients were Japanese (106 male and 146 female), with a mean age of 60...
March 24, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28342266/increased-number-of-mast-cells-in-the-dermis-in-actinic-keratosis-lesions-effectively-treated-with-imiquimod
#3
Satomi Oyama, Yoko Funasaka, Shin-Ichi Tsuchiya, Seiji Kawana, Hidehisa Saeki
Actinic keratosis (AK) is a cutaneous cancer in situ which develops as a result of excessive exposure to ultraviolet (UV). Toll-like receptor (TLR)7 agonist imiquimod is a topical immune response modifier and is effective for the treatment of non-melanoma skin cancers. Recently, the diagnostic role of the dermatoscope has been reported in the course of treatment of AK. In addition, mast cells are now considered to contribute to both the innate and adaptive immune systems in topical imiquimod therapy. We assessed the effect of imiquimod treatment by dermatoscopic and immunohistochemical findings in 14 patients with a total of 21 AK lesions...
March 24, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28334523/transformable-nanomaterials-as-artificial-extracellular-matrix-for-inhibiting-tumor-invasion-and-metastasis
#4
Xiao-Xue Hu, Ping-Ping He, Guo-Bin Qi, Yu-Juan Gao, Yao-Xin Lin, Chao Yang, Pei-Pei Yang, Hongxun Hao, Lei Wang, Hao Wang
Tumor metastasis is one of the big challenges in cancer treatment and is often associated with high patient mortality. Until now, there is an agreement that tumor invasion and metastasis are related to degradation of extracellular matrix (ECM) by enzymes. Inspired by the formation of natural ECM and the in situ self-assembly strategy developed in our group, herein, we in situ constructed an artificial extracellular matrix (AECM) based on transformable Laminin (LN)-mimic peptide 1 (BP-KLVFFK-GGDGR-YIGSR) for inhibition of tumor invasion and metastasis...
March 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28331853/melanomas-and-dysplastic-nevi-differ-in-epidermal-cd1c-dendritic-cell-count
#5
Grzegorz Dyduch, Katarzyna Ewa Tyrak, Anna Glajcar, Joanna Szpor, Magdalena Ulatowska-Białas, Krzysztof Okoń
Background. Dendritic cells could be involved in immune surveillance of highly immunogenic tumors such as melanoma. Their role in the progression melanocytic nevi to melanoma is however a matter of controversy. Methods. The number of dendritic cells within epidermis, in peritumoral zone, and within the lesion was counted on slides immunohistochemically stained for CD1a, CD1c, DC-LAMP, and DC-SIGN in 21 of dysplastic nevi, 27 in situ melanomas, and 21 invasive melanomas. Results. We found a significant difference in the density of intraepidermal CD1c+ cells between the examined lesions; the mean CD1c cell count was 7...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28329499/mohs-micrographic-surgery-and-secondary-intention-healing-of-a-plantar-melanoma-in-situ
#6
Jason Schoenfeld, Paul Wirth, Thomas Helm
This report details an acral melanoma in-situ on theright plantar foot that was successfully treated withMohs micrographic surgery and secondary intentionwound healing.
February 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28328708/long-term-outcomes-of-melanoma-in-situ-treated-with-topical-5-imiquimod-cream-a-retrospective-review
#7
Andrew J Park, Joan Paul, M Shane Chapman, Faramarz H Samie
BACKGROUND: Melanoma in situ (MIS) is a noninvasive form of melanoma for which nonsurgical therapeutic options continue to be explored. The off-label use of topical 5% imiquimod cream in the management of MIS has shown potential but reported recurrence rates vary considerably between 0% and 40%. Furthermore, the long-term efficacy of imiquimod is not well established. OBJECTIVE: To determine the recurrence rate of MIS among patients treated with topical 5% imiquimod cream at Dartmouth-Hitchcock Medical Center with at least 1 year of follow-up...
March 21, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28314913/laser-and-light-based-therapy-for-cutaneous-and-soft-tissue-metastases-of-malignant-melanoma-a-systematic-review
#8
REVIEW
Evan Austin, Andrew Mamalis, Derek Ho, Jared Jagdeo
Invasive cutaneous melanoma is a growing health concern. Although surgical excision can effectively treat in situ tumors, use for metastatic melanoma is limited. Laser and light-based therapies may be a valuable palliative treatment option for patients with stage III and stage IV cutaneous metastatic melanoma. Our goal is to review the published literature and provide evidence-based recommendations on laser and light-based palliative therapies for metastatic melanoma. A search of the databases Pubmed, EMBASE, Web of Science, and CINAHL was performed on March 10, 2016...
March 17, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28301623/subungual-melanoma-in-situ-treated-with-imiquimod-5-cream-after-conservative-surgery-recurrence
#9
Jorge Ocampo-Garza, Nilton Gioia Di Chiacchio, Eckart Haneke, Francisco le Voci, Francisco Macedo Paschoal
<p>Subungual melanoma is a rare variant of acral lentiginous melanoma that often has a poor prognosis compared with other types of melanoma. The aim of the present study is to report a case of a patient with recurrence of subungual melanoma treated with imiquimod 5%, which presented a total regression of the lesion and no recurrence for 4 years.</p> <p><em>J Drugs Dermatol. 2017;16(3):268-270.</em></p>.
March 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28296789/locally-recurrent-lentigo-maligna-and-lentigo-maligna-melanoma-characteristics-and-time-to-recurrence-after-surgery
#10
Karen L Connolly, Brian P Hibler, Erica H Lee, Anthony M Rossi, Klaus J Busam, Kishwer S Nehal
BACKGROUND: Various studies have reported local recurrence (LR) rates after surgical treatment of lentigo maligna (LM) and lentigo maligna melanoma (LMM). However, the time to LR of LM/LMM is not currently known, as few studies report time to LR and have long-term follow-up. OBJECTIVE: To define time to LR in LM/LMM after surgical treatment, and to describe features of observed LR. MATERIALS AND METHODS: Retrospective single-center study of consecutive patients presenting with locally recurrent LM/LMM...
March 14, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28294393/the-new-msc-mscs-as-pericytes-are-sentinels-and-gatekeepers
#11
REVIEW
Arnold I Caplan
Human Mesenchymal Stem Cells, hMSCs, were first named over 25 years ago with the "stem cell" nomenclature derived from the fact that we and others could cause these cells to differentiate into a number of different mesodermal phenotypes in cell culture. The capacity to form skeletal tissue in vitro encouraged the use of hMSCs for the fabrication of tissue engineered skeletal repair tissue with subsequent transplantation to in vivo sites. With the current realization that MSCs are derived from perivascular cells, pericytes, and the immunomodulatory and trophic capabilities of MSCs in both in vitro and in vivo test systems, a complete re-evaluation of the role and functions of MSCs in the body was required...
March 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28290624/thick-melanoma-in-tuscany
#12
Alessandra Chiarugi, Paolo Nardini, Lorenzo Borgognoni, Paola Brandani, Gianni Gerlini, Pietro Rubegni, Arianna Lamberti, Camilla Salvini, Giovanni Lo Scocco, Roberto Cecchi, Riccardo Sirna, Stefano Lorenzi, Riccardo Gattai, Silvio Battistini, Emanuele Crocetti
BACKGROUND: The epidemiologic trends of cutaneous melanoma are similar in several countries with a Western-type life style, where there is a progressive increasing incidence and a low but not decreasing mor- tality, or somewhere an increase too, especially in the older age groups. Also in Tuscany there is a steady rise in incidence with prevalence of in situ and invasive thin melanomas, with also an increase of thick melanomas. It is necessary to reduce the frequency of thick melanomas to reduce specific mortality...
March 14, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28290622/melanoma-and-melanocytic-nevi-in-paediatric-patients-a-single-institution-experience
#13
Paola Sgubbi, Francesco Savoia, Emi Dika, Iria Neri, Pier A Fanti, Annalisa Patrizi
BACKGROUND: Melanoma is an infrequent neoplasm in children and adolescents. The number of consultancies for melanocytic nevi control in the paediatric population is increased by the major anxiety of parents and paediatricians. METHODS: A retrospective chart review was performed in order to evaluate the incidence rate of melanoma, Spitz nevi, congenital and acquired melanocytic nevi in patients aged 14 years or less and referred to our institution from April 2010 to September 2015...
March 14, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28271705/thermally-triggered-in-situ-assembly-of-gold-nanoparticles-for-cancer-multimodal-imaging-and-photothermal-therapy
#14
Mengmeng Sun, Dong Peng, Hanjun Hao, Jin Hu, Dongliang Wang, Kun Wang, Jing Liu, Ximin Guo, Yen Wei, Weiping Gao
The assembly of gold nanoparticles (AuNPs) to AuNP assemblies is of interest for cancer therapy and imaging. Herein we introduce a new and general paradigm, thermally triggered AuNP assembly, for the development of novel intelligent platforms for cancer photothermal therapy (PTT) and multimodal imaging. Site-specific conjugation of a thermally sensitive elastin-like polypeptide (ELP) to AuNPs yields thermally sensitive ELP-AuNPs. Interestingly, ELP-AuNPs can in situ form AuNP assemblies composed of short necklace-like or worm-like gold nanostructures at elevated temperatures and thus show strong near-infrared light absorption and high photothermal effect...
March 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28247231/update-from-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumours-what-is-new-in-the-2017-who-blue-book-for-tumours-of-the-hypopharynx-larynx-trachea-and-parapharyngeal-space
#15
Nina Gale, Mario Poljak, Nina Zidar
Chapter 3 "Tumours of the hypopharynx, larynx, trachea, and parapharyngeal space" of the World Health Organization (WHO) Blue Book 2017 "Classification of Head and Neck Tumours" shows a shortened list of entities, especially due to reducing the number of benign and malignant soft tissue tumours, malignant melanoma and some others, which are transferred to more frequently affected regions of the head and neck. The basic concept of the new edition is to assimilate all advances concerning the discussed tumours in a shorter framework, appropriate for daily work...
March 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28241261/outcomes-of-melanoma-in-situ-treated-with-mohs-micrographic-surgery-compared-with-wide-local-excision
#16
Adi Nosrati, Jacqueline G Berliner, Shilpa Goel, Joseph McGuire, Vera Morhenn, Juliana R de Souza, Yildiray Yeniay, Rasnik Singh, Kristina Lee, Mio Nakamura, Rachel R Wu, Ann Griffin, Barbara Grimes, Eleni Linos, Mary Margaret Chren, Roy Grekin, Maria L Wei
Importance: Melanoma in situ (MIS) is increasing in incidence, and expert consensus opinion recommends surgical excision for therapeutic management. Currently, wide local excision (WLE) is the standard of care. However, Mohs micrographic surgery (MMS) is now used to treat a growing subset of individuals with MIS. During MMS, unlike WLE, the entire cutaneous surgical margin is evaluated intraoperatively for tumor cells. Objective: To assess the outcomes of patients with MIS treated with MMS compared with those treated with WLE...
February 22, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28218741/identification-of-micrornas-associated-with-invasive-and-aggressive-phenotype-in-cutaneous-melanoma-by-next-generation-sequencing
#17
Sankhiros Babapoor, Rong Wu, James Kozubek, Donna Auidi, Jane M Grant-Kels, Soheil S Dadras
A comprehensive repertoire of human microRNAs (miRNAs) that could be involved in early melanoma invasion into the dermis remains unknown. To this end, we sequenced small RNAs (18-30 nucleotides) isolated from an annotated series of invasive melanomas (average invasive depth, 2.0 mm), common melanocytic nevi, and matched normal skin (n=28). Our previously established bioinformatics pipeline identified 765 distinct mature known miRNAs and defined a set of top 40 list that clearly segregated melanomas into thin (0...
February 20, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28218707/fkbp51-immunohistochemical-expression-a-new-prognostic-biomarker-for-oscc
#18
Daniela Russo, Francesco Merolla, Massimo Mascolo, Gennaro Ilardi, Simona Romano, Silvia Varricchio, Virginia Napolitano, Angela Celetti, Loredana Postiglione, Pier Paolo Di Lorenzo, Luigi Califano, Giovanni Orabona Dell'Aversana, Fabio Astarita, Maria Fiammetta Romano, Stefania Staibano
Up-to-date, several molecular markers of prognosis have been studied in Oral Squamous Cell Carcinoma (OSCC), but none entered in the clinical setting. Therapy of OSCC tumors mainly relies on surgery, radiotherapy and partially on chemotherapy; there is an urgent need for biomarkers able to better stratify OSCC patients' risk to address targeted therapeutic strategies. The role of immune response in the pathogenesis and biological behavior of OSCC has been investigated by several authors, and promising results have been obtained with immune checkpoint inhibitors...
February 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28218344/familial-melanoma-associated-with-li-fraumeni-syndrome-and-atypical-mole-syndrome-total-body-digital-photography-dermoscopy-and-confocal-microscopy
#19
Priscila Giavedoni, Marnie Ririe, Cristina Carrera, Susana Puig, Josep Malvehy
Li-Fraumeni syndrome (LFS) is a rare autosomal dominant disorder caused by a mutation in the p53 gene. Melanoma is considered to be a rare, controversial component of LFS. The aim of this study is to describe the utility of systematic screening for melanoma in patients with LFS and atypical mole syndrome. Two 28-year-old identical twin sisters with LFS and atypical moles were monitored by physical examination, total-body digital photography and dermoscopy be-tween 2006 and 2014. A total of 117, predominantly dark-brown, reticular naevi were identified on case 1 and 105 on case 2...
February 20, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28188308/tetraspanin-8-is-a-novel-regulator-of-ilk-driven-%C3%AE-1-integrin-adhesion-and-signaling-in-invasive-melanoma-cells
#20
Manale El Kharbili, Clément Robert, Tiffany Witkowski, Emmanuelle Danty-Berger, Laetitia Barbollat-Boutrand, Ingrid Masse, Nicolas Gadot, Arnaud de la Fouchardière, Paul C McDonald, Shoukat Dedhar, François Le Naour, Françoise Degoul, Odile Berthier-Vergnes
Melanoma is well known for its propensity for lethal metastasis and resistance to most current therapies. Tumor progression and drug resistance depend to a large extent on the interplay between tumor cells and the surrounding matrix. We previously identified Tetraspanin 8 (Tspan8) as a critical mediator of melanoma invasion, whose expression is absent in healthy skin. The present study investigated whether Tspan8 may influence cell-matrix anchorage and regulate downstream molecular pathways leading to an aggressive behavior...
February 4, 2017: Oncotarget
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