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https://www.readbyqxmd.com/read/27915441/ovarian-metastasis-from-uveal-melanoma-with-mlh1-pms2-protein-loss-in-a-patient-with-germline-mlh1-mutated-lynch-syndrome-consequence-or-coincidence
#1
João Lobo, Carla Pinto, Micaela Freitas, Manuela Pinheiro, Rámon Vizcaino, Esther Oliva, Manuel R Teixeira, Carmen Jerónimo, Carla Bartosch
Currently, uveal melanoma is not considered within the Lynch syndrome tumor spectrum. However, there are studies suggesting a contribution of microsatellite instability in sporadic uveal melanoma tumorigenesis. We report a 45-year-old woman who was referred for genetic counseling due to a family history of Lynch syndrome caused by a MLH1 mutation. She originally underwent enucleation of the right eye secondary to a uveal spindle cell melanoma diagnosed at age 25. The tumor recurred 22 years later presenting as an ovarian metastasis and concurrently a microscopic endometrial endometrioid carcinoma, grade 1/3 was diagnosed...
December 3, 2016: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/27901477/the-neurotrophin-neuritin1-cpg15-is-involved-in-melanoma-migration-attachment-independent-growth-and-vascular-mimicry
#2
Anja Katrin Bosserhoff, Nadja Schneider, Lisa Ellmann, Lucie Heinzerling, Silke Kuphal
The neurotrophin Neuritin1 (NRN1; cpg15) belongs to the candidate plasticity gene (CPG) family and is expressed in postmitotic-differentiating neurons of the developmental nervous system and neuronal structures associated with plasticity in the brain of human adult.Our newest findings document that NRN1 deregulation could contribute also to disease development and have impact on malignant melanoma. Our analyses displayed the over-expression of NRN1 in melanoma in vitro and in vivo, shown by immunohistochemistry and qRT-PCR on microdissected melanoma tissue; furthermore, soluble NRN1 was detectable in tissue culture supernatant and serum of melanoma patients...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27899192/genetic-predisposition-to-melanoma
#3
REVIEW
Jason E Hawkes, Amanda Truong, Laurence J Meyer
Malignant melanoma is a rare, often fatal form of skin cancer with a complex multigenic etiology. The incidence of melanoma is increasing at an alarming rate. A number of heritable factors contribute to a patient's overall melanoma risk, including response to ultraviolet light, nevus number, and pigmentation characteristics, such as eye and hair color. Approximately 5%-10% of melanoma cases are familial, yet the majority of familial cases lack identifiable germ-line mutations in known susceptibility genes. Additionally, most familial melanomas lack germ-line mutations in genes that are commonly mutated in sporadic melanoma...
October 2016: Seminars in Oncology
https://www.readbyqxmd.com/read/27895032/molecular-pathways-receptor-ectodomain-shedding-in-treatment-resistance-and-monitoring-of-cancer
#4
Miles A Miller, Ryan J Sullivan, Douglas A Lauffenburger
Proteases known as sheddases cleave the extracellular domains of their substrates from the cell surface. The A Disintegrin and Metalloproteinases ADAM10 and ADAM17 are among the most prominent sheddases, being widely expressed in many tissues, frequently over-expressed in cancer, and promiscuously cleaving diverse substrates. It is increasingly clear that the proteolytic shedding of transmembrane receptors impacts pathophysiology and drug response. Receptor substrates of sheddases include the cytokine receptors TNFR1 and IL-6R; the Notch receptors; type-I and -III TGF-β receptors; receptor tyrosine kinases (RTKs) such as HER2, HER4, and VEGFR2; and in particular, MET and TAM-family RTKs AXL and Mer (MerTK)...
November 28, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27894244/umbelliferone-decreases-intracellular-ph-and-sensitizes-melanoma-cell-line-a375-to-dacarbazin-comparison-with-acetazolamide
#5
Clémentine Puech, Morgane Chatard, Delphine Felder-Flesch, Nathalie Prevot, Nathalie Perek
The high degree of malignancy of tumour cells is linked to alterations of many physiological parameters like the intracellular pH (pHi). The pHi in cancer cell line is regulated by the anhydrase carbonique IX (CA IX). The main enzymatic function of the CA IX protein is to catalyze the hydration of carbon dioxide into bicarbonate ions and protons. Inhibiton of transmembrane tumor associated isozyme carbonic anhydrase IX (CA IX) with specific inhibitors is a promising and expanding field as CA IX is involved in tumor progression...
November 28, 2016: Current Molecular Pharmacology
https://www.readbyqxmd.com/read/27889875/development-of-an-educational-program-integrating-concepts-of-genetic-risk-and-preventive-strategies-for-children-with-a-family-history-of-melanoma
#6
Yelena P Wu, Lisa G Aspinwall, Elizabeth Nagelhout, Wendy Kohlmann, Kimberly A Kaphingst, Sheila Homburger, Ryan D Perkins, Douglas Grossman, Garrett Harding, Pamela Cassidy, Sancy A Leachman
Efforts to prevent melanoma, especially for those at elevated risk for the disease, should ideally begin during childhood. However, there are few preventive interventions targeting children who are at higher risk for melanoma due to a family history of the disease. Further, there are no educational interventions that aim to help these at-risk children understand their risk for melanoma and the ways in which preventive behaviors, such as sun protection, can mitigate their risk. The current paper describes a multidisciplinary team's process for creating a developmentally appropriate educational intervention about melanoma risk and prevention for children ages 8-17 years who have a family history of melanoma...
November 26, 2016: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/27881943/number-and-size-of-acquired-melanocytic-nevi-and-affecting-risk-factors-in-cases-admitted-to-the-dermatology-clinic
#7
Ayşegül Yalçınkaya İyidal, Ülker Gül, Arzu Kılıç
INTRODUCTION: The size and number of acquired melanocytic nevi (AMN) and presence of dysplastic nevi are the leading risk factors that should be recognized in the development of malignant melanoma. AIM: To evaluate AMN and risk factors in the development of AMN in all age groups admitted to a dermatology outpatient clinic. MATERIAL AND METHODS: Four hundred and twelve patients who were admitted to the dermatology outpatient clinic for any dermatological symptom and who accepted to participate in the study were randomly included in the study...
October 2016: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/27881588/glucocorticoids-did-not-reverse-type-1-diabetes-mellitus-secondary-to-pembrolizumab-in-a-patient-with-metastatic-melanoma
#8
Jasna Aleksova, Peter K H Lau, Georgia Soldatos, Grant McArthur
Immune checkpoint inhibitors offer patients with advanced melanoma substantial improvements in survival. Unlike chemotherapy, immune checkpoint inhibitors such as ipilimumab and pembrolizumab cause unique immune-related adverse events (irAEs), including the development of endocrinopathies. We report a case of a man aged 60 years who developed diabetic ketoacidosis (DKA) following the use of pembrolizumab for the treatment of metastatic melanoma. He received four cycles of ipilimumab, before proceeding to pembrolizumab...
November 23, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27875342/the-multifaceted-roles-of-inflammasome-proteins-in-cancer
#9
Virginie Petrilli
PURPOSE OF REVIEW: Inflammasomes are major actors of the innate immune system, through their regulation of inflammatory caspases and maturation of IL-1β and IL-18. These multiprotein complexes have been shown to play major roles in inflammatory and metabolic diseases and have more recently been implicated in tumor development and dissemination. In this review, we address these recent findings, focusing particularly on colorectal cancer (CRC) initiation and tumor dissemination. RECENT FINDINGS: Based mostly on loss-of-function experiments in mouse models, paradoxical results were obtained as both protumoral and antitumoral activities were reported...
January 2017: Current Opinion in Oncology
https://www.readbyqxmd.com/read/27867747/early-diagnosis-of-genital-mucosal-melanoma-how-good-are-our-dermoscopic-criteria
#10
Tova Rogers, Melissa Pulitzer, Maria L Marino, Ashfaq A Marghoob, Oliver Zivanovic, Michael A Marchetti
BACKGROUND: There are limited studies on the dermoscopic features of mucosal melanoma, particularly early-stage lesions. Described criteria include the presence of blue, gray, or white colors, with a reported sensitivity of 100%. It is unclear if these features will aid in the detection of early mucosal melanoma or improve diagnostic accuracy compared to naked-eye examination alone. CASE: An Asian female in her fifties was referred for evaluation of an asymptomatic, irregularly pigmented patch of the clitoral hood and labia minora of unknown duration...
October 2016: Dermatology Practical & Conceptual
https://www.readbyqxmd.com/read/27864450/mage-a-family-expression-is-correlated-with-poor-survival-of-patients-with-lung-adenocarcinoma-a-retrospective-clinical-study-based-on-tissue-microarray
#11
Meixiang Sang, Lina Gu, Danjing Yin, Fei Liu, Yishui Lian, Xiaochong Zhang, Shina Liu, Weina Huang, Yunyan Wu, Baoen Shan
OBJECTIVES: As the best characterised cancer/testis antigen family members, melanoma-associated antigens (MAGE) have been reported to be expressed in various malignant tumours. However, the expression pattern of MAGE-A family in lung adenocarcinoma (LAC) specimens and their prognostic and therapeutic significance for patients with LAC is still unclear. MATERIALS AND METHODS: Tissue microarray-based immunohistochemistry analysis was used to examine the expression of MAGE-A family members (including MAGE-A1, A2, A3, A4, A6, A10, A11 and A12) in 105 paired LAC specimens and the corresponding pericarcinoma specimens...
November 18, 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27862570/communication-about-melanoma-and-risk-reduction-after-melanoma-diagnosis
#12
Vivian M Rodríguez, Marianne Berwick, Jennifer L Hay
BACKGROUND: Melanoma patients are advised to perform regular risk-reduction practices, including sun protection as well as skin self-examinations (SSEs) and physician-led examinations. Melanoma-specific communication regarding family risk and screening may promote such behaviors. To this end, associations between patients' melanoma-specific communication and risk reduction were examined. METHODS: Melanoma patients (N = 169) drawn from a population-based cancer registry reported their current risk-reduction practices, perceived risk of future melanoma, and communication with physicians and relatives about melanoma risk and screening...
November 15, 2016: Psycho-oncology
https://www.readbyqxmd.com/read/27852921/a-role-for-the-inflammasome-in-spontaneous-labor-at-term-with-acute-histologic-chorioamnionitis
#13
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Olesya Plazyo, Ronald Unkel, Nandor Gabor Than, Piya Chaemsaithong, Tinnakorn Chaiworapongsa, Zhong Dong, Adi L Tarca, Vikki M Abrahams, Lami Yeo, Sonia S Hassan
Inflammasomes are cytosolic signaling platforms that regulate the activation of caspase (CASP)-1, which induces the maturation of interleukin (IL)-1β and IL-18. Herein, we determined whether the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis express major inflammasome components and whether these changes are associated with the activation of CASP-1 and CASP-4 and the release of mature IL-1β and IL-18. When comparing the chorioamniotic membranes from women in spontaneous labor at term with acute histologic chorioamnionitis to those without this placental lesion, we found that (1) the messenger RNA (mRNA) abundance of NLR family pyrin domain containing 3 (NLRP3), NLR family CARD domain containing 4 (NLRC4), absent in melanoma 2 (AIM2), and nucleotide binding oligomerization domain 2 (NOD2) was higher; (2) the NLRP3 and NLRC4 protein quantities were increased; (3) the mRNA and protein expressions of CASP-1 and its active forms were greater; (4) CASP-4 was increased at the mRNA level only; (5) the mRNA and protein expressions of IL-1β and its mature form were higher; and (6) a modest increase in the total protein concentration and abundance of the mature form of IL-18 was observed...
November 16, 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27844409/expression-of-kallikrein-related-peptidase-6-in-primary-mucosal-malignant-melanoma-of-the-head-and-neck
#14
Julia Thierauf, Johannes A Veit, Jochen K Lennerz, Stephanie E Weissinger, Annette Affolter, Johannes Döscher, Christoph Bergmann, Andreas Knopf, Jennifer Grünow, Lisa Grünmüller, Cornelia Mauch, Peter K Plinkert, Thomas K Hoffmann, Jochen Hess
Mucosal melanomas of the head and neck (MMHN) are aggressive tumors with poor prognosis, different opposed to cutaneous melanoma. In this study, we characterized primary mucosal malignant melanoma for the expression of Kallikrein-related peptidase 6 (KLK6), a member of the KLK family with relevance to the malignant phenotype in various cancer types including cutaneous melanoma. Paraffin-embedded MMHN of 22 patients were stained immunohistochemically for KLK6 and results were correlated with clinical and pathological data...
November 14, 2016: Head and Neck Pathology
https://www.readbyqxmd.com/read/27843296/evaluating-the-cytotoxic-effects-of-the-water-extracts-of-four-anticancer-herbs-against-human-malignant-melanoma-cells
#15
Binbing Ling, Deborah Michel, Meena Kishore Sakharkar, Jian Yang
Malignant melanoma (MM) is the most dangerous type of skin cancer, killing more than 1,100 people each year in Canada. Prognosis for late stage and recurrent MM is extremely poor due to insensitivity to chemotherapy drugs, and thus many patients seek complementary and alternative medicines. In this study, we examined four commonly used anticancer herbs in traditional Chinese medicine, Hedyotis diffusa, Scutellaria barbata, Lobelia chinensis, and Solanum nigrum, for their in vitro antitumor effects toward human MM cell line A-375...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27843235/flat-choroidal-melanoma-masquerading-as-central-serous-chorioretinopathy
#16
Timothy Patrick Higgins, Chloe T L Khoo, George Magrath, Carol L Shields
There are several mimickers of choroidal melanoma. We report a patient with recent family stress who developed blurred vision to 20/50 OD and was found to have unilateral central serous chorioretinopathy and a coincidental choroidal nevus. After 1 year without resolution of the subretinal fluid, the patient was referred for our opinion. On examination, visual acuity was 20/50 in the right eye and 20/20 in the left eye. The left eye was normal. Evaluation of the right eye showed a small, pigmented submacular choroidal lesion measuring 4 mm × 3 mm...
September 2016: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/27836777/anticancer-effects-of-ixeris-dentata-thunb-ex-thunb-nakai-extract-on-human-melanoma-cells-a375p-and-a375sm
#17
Hae Nim Lee, Seong Ah Shin, Gang Sik Choo, Hyeong Jin Kim, Young Seok Park, Byung Kwon Park, Byeong Soo Kim, Sang Ki Kim, Sung Dae Cho, Jeong Seok Nam, Chang Sun Choi, Ji Youn Jung
ETHNOPHARMACOLOGICAL RELEVANCE: The plant species Taraxacum coreanum (TC), Youngia sonchifolia (YS), and Ixeris dentata (ID) belong to the family Compositae and are used for medicinal purposes in traditional medicine. However, the anticancer effects of TC, YS, and ID extracts and the underlying molecular mechanisms in melanoma cells have not been elucidated. AIM OF THE STUDY: To investigate the potential anticancer effects of TC, YS, and ID extracts on human melanoma cells and explore the potential pharmacological mechanisms in vitro and in vivo...
November 8, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27835863/selective-function-blocking-monoclonal-human-antibody-highlights-the-important-role-of-membrane-type-1-matrix-metalloproteinase-mt1-mmp-in-metastasis
#18
Albert G Remacle, Piotr Cieplak, Dong Hyun Nam, Sergey A Shiryaev, Xin Ge, Alex Y Strongin
The invasion-promoting MT1-MMP is a cell surface-associated collagenase with a plethora of critical cellular functions. There is a consensus that MT1-MMP is a key protease in aberrant pericellular proteolysis in migrating cancer cells and, accordingly, a promising drug target. Because of high homology in the MMP family and a limited success in the design of selective small-molecule inhibitors, it became evident that the inhibitor specificity is required for selective and successful MT1-MMP therapies. Using the human Fab antibody library (over 1...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27829416/tyrosinase-inhibition-and-antioxidant-properties-of-asphodelus-microcarpus-extracts
#19
Amalia Di Petrillo, Ana Maria González-Paramás, Benedetta Era, Rosaria Medda, Francesca Pintus, Celestino Santos-Buelga, Antonella Fais
BACKGROUND: Asphodelus microcarpus belongs to the family Liliaceae that include several medicinal plants. In the traditional medicine plants of the genus Asphodelus are used to treat skin disorders such as ectodermal parasites, psoriasis, microbial infection and for lightening freckles. In order to find novel skin depigmenting agents, the present work was carry out to evaluate antioxidant activity and tyrosinase inhibitory potential of leaves, flowers and tubers extracts of A. microcarpus...
November 9, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27829101/clinical-features-associated-with-individuals-at-higher-risk-of-melanoma-a-population-based-study
#20
Caroline G Watts, Christine Madronio, Rachael L Morton, Chris Goumas, Bruce K Armstrong, Austin Curtin, Scott W Menzies, Graham J Mann, John F Thompson, Anne E Cust
Importance: The identification of a subgroup at higher risk of melanoma may assist in early diagnosis. Objective: To characterize melanoma patients and the clinical features associated with their melanomas according to patient risk factors: many nevi, history of previous melanoma, and family history of melanoma, to assist with improving the identification and treatment of a higher-risk subgroup. Design, Setting, and Participants: The Melanoma Patterns of Care study was a population-based observational study of physicians' reported treatment of 2727 patients diagnosed with an in situ or invasive primary melanoma over a 12-month period from October 2006 to 2007 conducted in New South Wales...
November 9, 2016: JAMA Dermatology
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