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https://www.readbyqxmd.com/read/27925051/adult-t-cell-leukemia-lymphoma
#1
Pedro Dantas Oliveira, Lourdes Farre, Achiléa Lisboa Bittencourt
Adult T-cell leukemia/lymphoma (ATL) is a malignancy of mature CD4+ T-cells caused by human T-cell lymphotropic virus type 1 (HTLV-1). Twenty million people are believed to be infected throughout the world, mostly in Japan, Africa, the Caribbean, and South America, particularly in Brazil and Peru. ATL affects about 5% of infected individuals and is classified in the following clinical forms: acute, lymphoma, primary cutaneous tumoral, chronic (favorable and unfavorable), and smoldering (leukemic and non-leukemic)...
October 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27919252/neoplastic-diseases-in-the-domestic-ferret-mustela-putorius-furo-in-italy-classification-and-tissue-distribution-of-856-cases-2000-2010
#2
Giancarlo Avallone, Annalisa Forlani, Marco Tecilla, Elena Riccardi, Sara Belluco, Sara Francesca Santagostino, Guido Grilli, Kiumars Khadivi, Paola Roccabianca
BACKGROUND: The aim of this study was to describe the prevalence and tissue distribution of neoplasms in Italian ferrets, compared to the epidemiological data previously reported in USA and Japan. METHODS: Signalment and diagnoses of pathological submissions received between 2000 and 2010 were searched; cases with the diagnosis of neoplasm were selected and original sections reviewed to confirm the diagnosis. RESULTS: Nine-hundred and ten samples were retrieved, 690 of which included at least one tumour for a total of 856 tumours...
December 5, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27916918/subchronic-toxicities-of-hz1006-a-hydroxamate-based-histone-deacetylase-inhibitor-in-beagle-dogs-and-sprague-dawley-rats
#3
Xiaofang Zhang, Xiaodong Zhang, Bojun Yuan, Lijun Ren, Tianbao Zhang, Guocai Lu
Histone deacetylase inhibitors (HDACIs), such as vorinostat and panobinostat, have been shown to have active effects on many hematologic malignancies, including multiple myeloma and cutaneous T-cell lymphoma. Hydroxamate-based (Hb) HDACIs have very good toxicity profiles and are currently being tested in phases I and II clinical trials with promising results in selected neoplasms, such as bladder carcinoma. One of the Hb-HDACIs, HZ1006, has been demonstrated to be a promising drug for clinical use. The aim of our study was to determine the possible target of toxicity and to identify a non-toxic dose of HZ1006 for clinical use...
November 30, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27904290/a-case-of-cutaneous-epstein-barr-virus-associated-diffuse-large-b-cell-lymphoma-in-an-angioimmunoblastic-t-cell-lymphoma
#4
Mi-Hye Lee, Ik-Jun Moon, Woo-Jin Lee, Chong-Hyun Won, Sung-Eun Chang, Jee-Ho Choi, Mi-Woo Lee
No abstract text is available yet for this article.
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27904177/a-clinicopathological-analysis-of-primary-cutaneous-lymphomas-a-6-year-observational-study-at-a-tertiary-care-center-of-south-india
#5
Anza Khader, Shiny Padinjarayil Manakkad, Mohammed Shaan, Sarita Sasidharan Pillai, Najeeba Riyaz, P Binitha Manikoth, Muhammed Kunnummel, Sunitha Balakrishnan
BACKGROUND: Little data are available concerning clinical and pathological patterns of cutaneous lymphomas in India. AIM: To analyze the clinical and histopathological characteristics of cutaneous lymphomas in Indian patients. MATERIALS AND METHODS: This is a single-center, prospective, observational study carried out from January 1, 2010, to December 31, 2015. The patients underwent clinical examination, human T-cell lymphotropic virus-1 (HTLV-1) screening, skin biopsy with hematoxylin and eosin and immunohistochemistry staining...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27897325/the-biomarker-landscape-in-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#6
REVIEW
Brittany Dulmage, Larisa Geskin, Joan Guitart, Oleg E Akilov
The practice of preemptive individualized medicine is predicated on the discovery, development, and application of biomarkers in specific clinical settings. Mycosis fungoides and Sézary syndrome are the two most common type of cutaneous T-cell lymphoma, yet diagnosis, prognosis, and disease monitoring remain a challenge. In this review, we discuss the current state of biomarker discovery in mycosis fungoides and Sézary syndrome, highlighting the most promising molecules in different compartments. Further, we emphasize the need for continued multicenter efforts to validate available and new biomarkers and to develop prospective combinatorial panels of already discovered molecules...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27894880/lymphoma-of-the-eyelid
#7
REVIEW
Frederik Holm Svendsen, Steffen Heegaard
Lymphoma of the eyelid constitutes 5% of ocular adnexal lymphoma. In previously published cases, 56% of lymphomas of the eyelid are of B-cell origin and 44% are of T-cell origin. The most frequent B-cell lymphomas are extranodal marginal zone lymphoma (27 cases--14%) and diffuse large B-cell lymphoma (18 cases--9%). T-cell lymphomas are most frequently mycosis fungoides (25 cases--13%), extranodal NK/T-cell, nasal type lymphoma (12 cases--6%) and primary cutaneous anaplastic large cell lymphoma (12 cases--6%)...
November 25, 2016: Survey of Ophthalmology
https://www.readbyqxmd.com/read/27893746/mast-cells-are-abundant-in-primary-cutaneous-t-cell-lymphomas-results-from-a-computer-aided-quantitative-immunohistological-study
#8
Johanna Eder, Radu Rogojanu, Waltraud Jerney, Friedrich Erhart, Alexander Dohnal, Melitta Kitzwögerer, Georg Steiner, Julia Moser, Franz Trautinger
BACKGROUND: Mast cells (MC) are bone marrow derived haematopoetic cells playing a crucial role not only in immune response but also in the tumor microenvironment with protumorigenic and antitumorigenic functions. The role of MC in primary cutaneous T-cell lymphomas (CTCL), a heterogeneous group of non-Hodgkin lymphomas with initial presentation in the skin, is largely unknown. OBJECTIVE: To gain more accurate information about presence, number, distribution and state of activation (degranulated vs...
2016: PloS One
https://www.readbyqxmd.com/read/27891503/tp53-gene-status-affects-survival-in-advanced-mycosis-fungoides
#9
Gitte Wooler, Linea Melchior, Elisabeth Ralfkiaer, Lise Mette Rahbek Gjerdrum, Robert Gniadecki
TP53 is frequently mutated in different types of neoplasms including leukemia and lymphomas. Mutations of TP53 have also been reported in mycosis fungoides (MF), the most common type of cutaneous lymphoma. However, little is known about the frequency, spectrum of mutations, and their prognostic significance in MF. In this study, we have optimized the protocol for Sanger sequencing of TP53 using DNA extracted from archival paraffin-embedded biopsies. Of 19 samples from patients with stage IIB MF or higher, 31% harbored mutations in TP53...
2016: Frontiers in Medicine
https://www.readbyqxmd.com/read/27890930/histone-deacetylase-inhibitors-interrupt-hsp90-rasgrp1-and-hsp90-craf-interactions-to-upregulate-bim-and-circumvent-drug-resistance-in-lymphoma-cells
#10
H Ding, K L Peterson, C Correia, B Koh, P A Schneider, G S Nowakowski, S H Kaufmann
Histone deacetylase (HDAC) inhibitors, which are approved for the treatment of cutaneous T cell lymphoma and multiple myeloma, are undergoing evaluation in other lymphoid neoplasms. How they kill susceptible cells is incompletely understood. Here we show that trichostatin A, romidepsin, and panobinostat induce apoptosis across a panel of malignant B cell lines, including lines that are intrinsically resistant to bortezomib, etoposide, cytarabine, and BH3 mimetics. Further analysis traces the pro-apoptotic effects of HDAC inhibitors to increased acetylation of the chaperone heat shock protein 90 (HSP90), causing release and degradation of the HSP90 client proteins RASGRP1 and CRAF, which in turn leads to downregulation of mitogen activated protein kinase pathway signaling and upregulation of the pro-apoptotic BCL2 family member BIM in vitro and in vivo...
November 28, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27889686/microrna-181-contributes-to-downregulation-of-samhd1-expression-in-cd4-t-cells-derived-from-s%C3%A3-zary-syndrome-patients
#11
Rebecca Kohnken, Karthik M Kodigepalli, Anjali Mishra, Pierluigi Porcu, Li Wu
Sézary syndrome (SS) is a rare subtype of cutaneous T-cell lymphoma (CTCL) that is characterized by aggressive spread of neoplastic CD4+ T-cells from the skin into the bloodstream with metastasis to visceral organs. The deoxynucleoside triphosphohydrolase SAMHD1 is highly expressed in normal CD4+ T-cells, while its expression is down-regulated in CD4+ T-cells from SS patients. MicroRNA (miR) dysregulation is an important epigenetic mechanism in the pathogenesis and progression of SS. MiR-181 has been shown to inhibit SAMHD1 expression in cell lines and was identified as an important prognostic biomarker in CTCL...
November 17, 2016: Leukemia Research
https://www.readbyqxmd.com/read/27888162/photodynamic-therapy-as-an-alternative-treatment-for-relapsed-or-refractory-mycosis-fungoides-a-systemic-review
#12
REVIEW
Jingwen Xue, Cynthia Liu, Yuehua Liu
Mycosis fungoides is the most common cutaneous T-cell lymphoma. It is characterized by slow progress over years to decades, developing from patches to infiltrated plaques, and sometimes to tumors. Therapies such as localized chemotherapy, photochemotherapy and radiotherapy are often employed when lesions of refractory or relapsing mycosis fungoides are resistant to conventional therapies. However, these methods have acute or chronic side effects and toxicity, which may accumulate with repeated and protracted treatment cycles...
November 22, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27879514/primary-cutaneous-t-cell-lymphomas-showing-gamma-delta-%C3%AE-%C3%AE-phenotype-and-predominantly-epidermotropic-pattern-are-clinicopathologically-distinct-from-classic-primary-cutaneous-%C3%AE-%C3%AE-t-cell-lymphomas
#13
E Dean Merrill, Rose Agbay, Roberto N Miranda, Phyu P Aung, Michael T Tetzlaff, Ken H Young, Jonathan L Curry, Priyadharsini Nagarajan, Doina Ivan, Victor G Prieto, L Jeffrey Medeiros, Madeleine Duvic, Carlos A Torres-Cabala
Primary cutaneous gamma-delta (γδ) T-cell lymphoma is a rare disease that typically involves the dermis and subcutis. Cases of primary cutaneous T-cell lymphomas showing γδ phenotype and predominantly epidermotropic pattern (EγδTCL) are not well defined. In this series, cases of primary cutaneous T-cell lymphomas showing γδ phenotype were reviewed and classified as predominantly epidermotropic (EγδTCL) when >75% of lymphoma cells resided in the epidermis or predominantly dermal and/or subcutaneous (DSγδTCL)...
November 22, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27878874/lymphocytes-from-patients-with-cutaneous-t-cell-lymphoma-show-dna-instability-and-reduced-dna-repair-using-the-comet-assay
#14
Kristian Thestrup-Pedersen, Chen Wang
We have shown that cutaneous T cell lymphoma (CTCL) is associated with the presence of genotraumatic T lymphocytes1,2. In order to study the genetic stability in lymphocytes from CTCL, we used the Comet assay3. This assay measures DNA damage and can measure DNA repair after DNA damage following low-dosage X-rays or UV light. In a gel electrophoresis spreading of DNA pieces can be visualized3. In order to measure DNA repair, cells can be left for certain time periods before subjected to electrophoresis. Lymphocytes from healthy persons repair their DNA damage, but here we document that this is not the case with blood and skin-homing T lymphocytes from CTCL patients even in the early stages of disease...
November 23, 2016: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/27874877/low-dose-radiotherapy-for-primary-cutaneous-anaplastic-large-cell-lymphoma-while-on-low-dose-methotrexate
#15
Christine M Cornejo, Roberto A Novoa, Robert E Krisch, Ellen J Kim
Primary cutaneous anaplastic large-cell lymphoma (pcALCL) is part of a spectrum of CD30+ primary cutaneous lymphoproliferative disorders (pcLPDs) that also includes lymphomatoid papulosis (LyP). Localized radiotherapy at doses of 34 to 44 Gy is first-line treatment of pcALCL, but the use of low-dose radiotherapy for pcALCL has not been reported. We present the case of a patient with a history of pcALCL/LyP who was treated with low-dose radiotherapy while on oral low-dose methotrexate (MTX) once weekly. This report suggests that low-dose radiotherapy can be an effective palliative treatment of pcALCL...
October 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/27873737/erythroderma-and-non-hodgkin-t-cell-lymphoma-what-else-apart-from-mycosis-fungoides-and-s%C3%A3-zary-syndrome
#16
Alessandro Pileri, Cinzia Pellegrini, Claudio Agostinelli, Vieri Grandi, Annalisa Patrizi, Pier Luigi Zinzani, Nicola Pimpinelli
BACKGROUND: Peripheral T-cell lymphomas, not otherwise specified (PTCL-NOS), are a rare condition characterised by specific histology, nodal presentation, and a poor prognosis. In total, 10-18% of patients present with cutaneous involvement which is regarded as a poor prognostic marker. However, cutaneous PTCL-NOS lesions have been rarely reported in the literature. OBJECTIVES: We sought to describe PTCL-NOS cases characterised by erythrodermic dissemination to the skin...
November 21, 2016: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/27871620/clinicopathologic-variants-of-mycosis-fungoides
#17
H Muñoz-González, A M Molina-Ruiz, L Requena
Mycosis fungoides (MF) is the most common primary cutaneous T-cell lymphoma. The clinical course of the disease is typically characterized by progression from a nonspecific phase of erythematous macules to the appearance of plaques and ultimately, in some patients, tumors. However, numerous clinical and histopathologic variants of MF with specific therapeutic and prognostic implications have been described in recent decades. Clarification of the differential diagnosis can be frustrated by the wide range of clinical manifestations and histopathologic patterns of cutaneous infiltration, particularly in the early phases of the disease...
November 18, 2016: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/27868373/acute-myeloid-leukemia-in-baraitser-winter-cerebrofrontofacial-syndrome
#18
Paola Cianci, Grazia Fazio, Sara Casagranda, Marco Spinelli, Carmelo Rizzari, Gianni Cazzaniga, Angelo Selicorni
Baraitser-Winter malformation syndrome (BWMS), Fryns-Aftimos syndrome (FA), and craniofrontofacial syndromes (CFFs) have all been recently proposed to be part of the same phenotypic spectrum of Baraitser-Winter cerebrofrontofacial syndrome (BWCFF), which is characterized by facial dysmorphism, ocular coloboma, brain malformations, and intellectual disabilities. In addition to that, the recent discovery of missense mutations in one of the two ubiquitously expressed cytoplasmic β- and γ-acting-encoding genes ACTB (7p22...
November 21, 2016: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/27862162/erythema-multiforme-like-cutaneous-lesions-in-monomorphic-epitheliotropic-intestinal-t-cell-lymphoma-a-rare-case-report
#19
Kumpol Aiempanakit, Chitiarpa Amatawet, Kanokphorn Chiratikarnwong, Sauvarat Auepemkiate, Kanita Kayasut, Supaporn Suwiwat, Benjawan Apinantriyo
Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), also known as Type II enteropathy-associated T-cell lymphoma (EATL), is an aggressive peripheral T-cell lymphoma. EATL generally presents in adults with gastrointestinal symptoms. Skin involvement is very rare, found only in approximately five percent of patients. The authors report a 67-year-old Asian male who presented with chronic diarrhea and developed erythema multiforme-like cutaneous lesions. A skin biopsy revealed extensive pagetoid spread of atypical lymphocytes in the epidermis...
November 10, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27842487/molecular-interactions-of-bexarotene-a-retinoid-drug-and-alzheimer-s-a%C3%AE-peptide-a-docking-study
#20
Zeenat Mirza, Mohd Amin Beg
Alzheimer's disease (AD) pathogenesis is primarily hallmarked by the production and accumulation of amyloid beta (Aβ) peptide. Along with the understanding of the neurodegenerative disease progression and its pathophysiological mechanisms, development of anti-Aβ targeted effective therapeutics is essential for AD management. Numerous therapeutic approaches targeting the production, toxicity and removal of Aβ are being attempted worldwide. Prime need is to design inhibitors which can slow down the Aβ aggregation process in a physiological environment...
November 14, 2016: Current Alzheimer Research
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