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Uveal metastasis

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https://www.readbyqxmd.com/read/28586956/stereotactic-radiosurgery-and-fractionated-stereotactic-radiation-therapy-for-the-treatment-of-uveal-melanoma
#1
Gozde Yazici, Hayyam Kiratli, Gokhan Ozyigit, Sezin Yuce Sari, Mustafa Cengiz, Bercin Tarlan, Burce Ozgen Mocan, Faruk Zorlu
PURPOSE: To evaluate treatment results of stereotactic radiosurgery or fractionated stereotactic radiation therapy (SRS/FSRT) for uveal melanoma. METHODS AND MATERIALS: We retrospectively evaluated 181 patients with 182 uveal melanomas receiving SRS/FSRT between 2007 and 2013. Treatment was administered with CyberKnife. RESULTS: According to Collaborative Ocular Melanoma Study criteria, tumor size was small in 1%, medium in 49.5%, and large in 49...
May 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28572063/pattern-of-local-recurrence-after-i-125-episcleral-brachytherapy-for-uveal-melanoma-in-a-spanish-referral-ocular-oncology-unit
#2
Sara Sánchez-Tabernero, Ciro García-Alvarez, Ma Fe Muñoz-Moreno, Patricia Diezhandino, Pilar Alonso-Martínez, Jesus M de Frutos-Baraja, Francisco López-Lara, Maria A Saornil
PURPOSE: To describe the time, frequency, and clinical characteristics of treatment failure after I-125 brachytherapy in patients with uveal melanoma treated and followed in a Spanish referral ocular oncology unit. DESIGN: Prospective, consecutive, interventional case series. METHODS: Patients diagnosed with uveal melanoma from 1995 to 2016 and treated with episcleral brachytherapy were included. Demographic data collection, ophthalmic evaluation, ultrasound scan, and systemic studies were performed at baseline, every six months thereafter for five years, and subsequently at annual intervals...
May 29, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28559841/giant-orbital-melanoma-in-a-heroin-abuser
#3
Alena Furdova, Pavel Babal
PURPOSE: The aim of this report was to report a heroin abuser with nondiagnosed giant uveal melanoma infiltrating the orbit and prolapsing through the face. METHODS: We conducted a case report of the patient with giant melanoma. RESULTS: In March 2013, a 39-year-old male with bleeding from the right side of his face was taken to the Emergency Center of the University Hospital Bratislava by ambulance. The heroin abusing, homeless male who had never been treated before reported a 2-year history of a prolapsed, dark colored mass from his eye...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28529629/the-antihelminthic-drug-niclosamide-effectively-inhibits-the-malignant-phenotypes-of-uveal-melanoma-in-vitro-and-in-vivo
#4
Jingfeng Zhou, Bei Jin, Yanli Jin, Yizhi Liu, Jingxuan Pan
Uveal melanoma (UM) is a lethal intraocular malignancy with an average survival of only 2~8 months in patients with hepatic metastasis. Currently, there is no effective therapy for metastatic UM. Here, we reported that niclosamide, an effective repellence of tapeworm that has been approved for use in patients for approximately 50 years, exhibited strong antitumor activity in UM cells in vitro and in vivo. We showed that niclosamide potently inhibited UM cell proliferation, induced apoptosis and reduced migration and invasion...
2017: Theranostics
https://www.readbyqxmd.com/read/28529451/role-of-epigenetics-in-uveal-melanoma
#5
REVIEW
Yongyun Li, Renbing Jia, Shengfang Ge
Uveal melanoma (UM) is a severe human malignancy with a high mortality rate that demands continued research into new and alternative forms of prevention and treatment. The emerging field of epigenetics is beginning to unfold an era of contemporary approaches to reducing the risk and improving the clinical treatment of UM. Epigenetic changes have a high prevalence rate in cancer, are reversible in nature, and can lead to cancer characteristics even in mutation-free cells. The information contained in this review highlights and expands on the main mechanisms of epigenetic dysregulation in UM tumorigenesis, progression and metastasis, including microRNA expression, hypermethylation of genes and histone modification...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28512868/metastasis-associated-microrna-expression-in-canine-uveal-melanoma
#6
M P Starkey, L Compston-Garnett, P Malho, K Dunn, R Dubielzig
BACKGROUND: Uveal melanoma (UM) is the most common primary intraocular tumour in dogs. There is no effective means of predicting whether a tumour will metastasize. microRNA (miRNA) metastasis signatures have been identified for several human cancers, including UM. AIMS: In this study we investigated whether metastasizing and non-metastasizing canine UMs can be distinguished by miRNA expression levels. MATERIALS AND METHODS: miRNA microarray profiling was used to compare miRNA expression in 8 metastasizing and 12 non-metastasizing formalin-fixed, paraffin-embedded (FFPE) primary UM biopsies...
May 17, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28503286/fulminant-hepatic-failure-due-to-metastatic-choroidal-melanoma
#7
Emmanuel Escobar-Valdivia, Roberto Monreal-Robles, Guillermo Delgado-García, Badir Hernández-Velazquez
BACKGROUND: Acute liver failure (ALF) as a consequence of metastatic disease is extremely uncommon. The liver is the most commonly affected organ by metastatic disease, but only a few cases of ALF in the setting of metastatic choroidal melanoma have been reported. CASE PRESENTATION: We describe the case of a 47-year-old man with right upper quadrant pain, progressive jaundice, and unintentional weight loss. He also reported that he had experienced reduced left visual acuity which progressed to blindness over 2 months...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28495150/personalized-prognosis-of-uveal-melanoma-based-on-cytogenetic-profile-in-1059-patients-over-an-8-year-period-the-2017-harry-s-gradle-lecture
#8
Carol L Shields, Emil Anthony T Say, Murat Hasanreisoglu, Jarin Saktanasate, Brendan M Lawson, Jeffrey E Landy, Anjali U Badami, Meera D Sivalingam, Alexander J Hauschild, Robert J House, Zachary E Daitch, Arman Mashayekhi, Jerry A Shields, Arupa Ganguly
PURPOSE: To determine the personalized rate of uveal melanoma-related metastasis on the basis of individual tumor cytogenetic profile. DESIGN: Retrospective case series. PARTICIPANTS: A total of 1059 patients with uveal melanoma. METHODS: Fine-needle aspiration biopsy (FNAB) for DNA amplification and whole genome array-based assay were performed for analysis of chromosomes 3, 6, and 8. MAIN OUTCOME MEASURES: Melanoma-related metastasis...
May 7, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28455241/in%C3%A2-vitro-and-in%C3%A2-vivo-anti-uveal-melanoma-activity-of-jsl-1-a-novel-hdac-inhibitor
#9
Yun Wang, Maoxing Liu, Yanli Jin, Sheng Jiang, Jingxuan Pan
Uveal melanoma (UM) is the most common intraocular malignant neoplasm in adults. Despite the availability of enucleation, radiation and chemotherapy, the prognosis of patients with metastasis remains poor. Therefore, novel effective therapies for patients with metastatic UM are urgently needed. In the present study, we demonstrated that JSL-1, a novel HDAC inhibitor, effectively inhibited the proliferation. JSL-1 induced apoptosis with increased expression of proapoptotic BH3-only protein BIM in UM cells. JSL-1 suppressed migration and invasion of UM cells with MMP-2 decreased...
April 26, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28399345/intraocular-metastases-a-review
#10
Lazaros Konstantinidis, Bertil Damato
Intraocular metastases almost invariably arise in the uveal tract, mostly in the posterior choroid. They are the most common type of intraocular malignancy and often the first sign of tumor dissemination. Choroidal metastases generally appear as a creamy white or pale yellow mass associated with subretinal fluid and may be multifocal and bilateral. The most common primary sites are breast and lung. Diagnosis is aided by a variety of tests, particularly ultrasonography and optical coherence tomography. Intraocular biopsy is useful in patients with clinical suspicion of uveal metastasis but no evidence of primary malignancy despite systemic evaluation...
March 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28399342/uveal-melanoma-treatment-and-prognostication
#11
Mehmet Dogrusöz, Martine J Jager, Bertil Damato
Approximately 90% of uveal melanoma develop in the choroid, with the remainder arising in the ciliary body or the iris. The treatment of uveal melanoma is aimed at conserving the eye and useful vision, and, if possible, preventing metastatic disease. Enucleation is now reserved for tumors that are large and/or involve the optic disc, having largely been replaced by various forms of radiotherapy (plaque brachy-therapy, proton beam or stereotactic radiotherapy) and laser therapy. Whereas iridectomy and iridocyclectomy are widely performed, transscleral exoresection of choroidal tumors is performed only in a few centers because it requires special skills and hypotensive anesthesia...
March 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28391358/genetic-evolution-of-uveal-melanoma-guides-the-development-of-an-inflammatory-microenvironment
#12
Gülçin Gezgin, Mehmet Dogrusöz, T Huibertus van Essen, Wilhelmina G M Kroes, Gregorius P M Luyten, Pieter A van der Velden, Vonn Walter, Robert M Verdijk, Thorbald van Hall, Sjoerd H van der Burg, Martine J Jager
Uveal melanoma (UM) is characterized by a number of genetic aberrations that follow a certain chronology and are tightly linked to tumor recurrence and survival. Loss of chromosome 3, bi-allelic loss of BAP1 expression, and gain in chromosome 8q have been associated with metastasis formation and death, while loss of chromosome 3 has been associated with the influx of macrophages and T cells. We used a set of genetically-classified UM to study immune infiltration in the context of their genetic evolution. We show in two independent cohorts that lack of BAP1 expression is associated with an increased density of CD3(+) T cells and CD8(+) T cells...
April 8, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28376556/-uveal-melanoma-cell-under-oxidative-stress-influence-of-vegf-and-vegf-inhibitors
#13
M Dithmer, A M Kirsch, L Gräfenstein, F Wang, H Schmidt, S E Coupland, S Fuchs, J Roider, A K Klettner
Background The role of oxidative stress in cancer is complex. While the pathological alterations induced by oxidative stress may be involved in the induction of tumours, in the late stages of tumour development, it can facilitate the loss of tumour cells and might even prevent metastasis. Tumour cells show metabolic alterations, often inducing an increased production of reactive oxygen species, which makes these cells particularly vulnerable to additional oxidative stress. This is an important mode of action in the use of many chemotherapeutics and in the application of ionizing radiation...
April 4, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28284838/prl-3-ptp4a3-phosphatase-regulates-integrin-%C3%AE-1-in-adhesion-structures-during-migration-of-human-ocular-melanoma-cells
#14
Malika Foy, Océane Anézo, Simon Saule, Nathalie Planque
In a previous transcriptomic analysis of 63 ocular melanomas of the uvea, we found that expression of the PRL-3/PTP4A3 gene, encoding a phosphatase that is anchored to the plasma membrane, was associated with the risk of metastasis, and a poor prognosis. We also showed that PRL-3 overexpression in OCM-1 ocular melanoma cells significantly increased cell migration in vitro and invasiveness in vivo, suggesting a direct role for PRL-3 in the metastatic spreading of uveal melanoma. Here, we aimed to identify PRL-3 substrates at the plasma membrane involved in adhesion to the extracellular matrix...
April 15, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28257297/new-concepts-in-the-molecular-understanding-of-uveal-melanoma
#15
REVIEW
David Reichstein
PURPOSE OF REVIEW: Uveal melanoma is the most common primary intraocular malignancy, and its metastases are deadly. Significant work has been done to elucidate the molecular framework that causes uveal melanoma development and metastasis. This review is intended to highlight the most recent breakthroughs in the molecular understanding of uveal melanoma. RECENT FINDINGS: Monosomy of chromosome 3 and class 2 gene-expression profile are well-known indicators of melanoma metastasis...
May 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28253717/pha665752-inhibits-the-hgf-stimulated-migration-and-invasion-of-cells-by-blocking-pi3k-akt-pathway-in-human-cell-line-uveal-melanoma
#16
Z Wang, C He, L Liu, N Ma, X Chen, D Zheng, G H Qiu
HGF/c-MET is frequently associated with tumor metastasis in many cancers, including uveal melanoma (UM). PHA665752, a selective c-MET inhibitor, exhibits anticancer activity through inhibiting cell motility in some cancers. In this study, we investigated the effects of PHA665752 on UM cell lines M17 and SP6.5. Our data show that HGF stimulated the motility of UM cells, and induced the activation of both c-MET and PI3K/AKT, but not ERK1/2. Moreover, consistent with the amount of c-MET within the nucleus, PHA665752 significantly inhibited HGF-promoted cell motility and suppressed the phosphorylation of c-MET and PI3K/AKT, but not ERK1/2 induced by HGF...
March 3, 2017: Neoplasma
https://www.readbyqxmd.com/read/28246385/zeb1-regulates-multiple-oncogenic-components-involved-in-uveal-melanoma-progression
#17
Yao Chen, Xiaoqin Lu, Diego E Montoya-Durango, Yu-Hua Liu, Kevin C Dean, Douglas S Darling, Henry J Kaplan, Douglas C Dean, Ling Gao, Yongqing Liu
Human uveal melanoma (UM) is a major ocular malignant tumor with high risk of metastasis and requires multiple oncogenic factors for progression. ZEB1 is a zinc finger E-box binding transcription factor known for participating epithelial-mesenchymal transition (EMT), a critical cellular event for metastasis of malignant tumors of epithelium origin. ZEB1 is also expressed in UM and high expression of ZEB1 correlates with UM advancement, but has little effect on cell morphology. We show that spindle UM cells can become epithelioid but not vice versa; and ZEB1 exerts its tumorigenic effects by promoting cell dedifferentiation, proliferation, invasiveness, and dissemination...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28240745/the-biological-and-prognostic-significance-of-angiotropism-in-uveal-melanoma
#18
Raymond L Barnhill, Mengliang Ye, Aude Batistella, Marc-Henri Stern, Sergio Roman-Roman, Rémi Dendale, Olivier Lantz, Sophie Piperno-Neumann, Laurence Desjardins, Nathalie Cassoux, Claire Lugassy
Angiotropism is a marker of extravascular migration of melanoma cells along vascular and other structures and a prognostic factor in cutaneous melanoma. Because of this biological and prognostic importance in cutaneous melanoma, angiotropism was studied in uveal melanoma (UM). This retrospective study performed at a single ocular oncology referral center included 89 patients from the study period 2006-2008. All patients were diagnosed with UM from the choroid and/or ciliary body. All patients underwent enucleation for prognostic purposes and definitive therapy...
February 27, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28229253/the-biology-of-uveal-melanoma
#19
Adriana Amaro, Rosaria Gangemi, Francesca Piaggio, Giovanna Angelini, Gaia Barisione, Silvano Ferrini, Ulrich Pfeffer
Uveal melanoma (UM), a rare cancer of the eye, is distinct from cutaneous melanoma by its etiology, the mutation frequency and profile, and its clinical behavior including resistance to targeted therapy and immune checkpoint blockers. Primary disease is efficiently controlled by surgery or radiation therapy, but about half of UMs develop distant metastasis mostly to the liver. Survival of patients with metastasis is below 1 year and has not improved in decades. Recent years have brought a deep understanding of UM biology characterized by initiating mutations in the G proteins GNAQ and GNA11...
March 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28223438/dysregulated-gpcr-signaling-and-therapeutic-options-in-uveal-melanoma
#20
REVIEW
Vivian Chua, Dominic Lapadula, Clinita Randolph, Jeffrey L Benovic, Philip B Wedegaertner, Andrew E Aplin
Uveal melanoma 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 uveal melanoma. To provide the preclinical basis for new treatments, it is important to understand the molecular underpinnings of the disease...
May 2017: Molecular Cancer Research: MCR
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