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Canine lymphoma

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https://www.readbyqxmd.com/read/30340657/pcr-based-clonality-analysis-of-antigen-receptor-gene-rearrangements-in-canine-cutaneous-plasmacytoma
#1
M Takanosu, K Okada, Y Kagawa
Plasmacytomas are discrete, B cell-derived, round cell tumours that sometimes are difficult to distinguish from canine cutaneous histiocytomas or T cell lymphosarcomas (lymphomas). Diagnosis of plasmacytomas relies on morphological observations and immunohistochemistry for multiple myeloma oncogene-1 (MUM-1) and cluster of differentiation 3 (CD3). Clonality testing often is used as an adjunct diagnostic tool to examine lymphoproliferative diseases. In this study, the sensitivity of PCR-based clonality analysis of antigen receptor gene rearrangements in canine cutaneous plasmacytomas was determined...
November 2018: Veterinary Journal
https://www.readbyqxmd.com/read/30286705/canine-cerebral-intravascular-lymphoma-neuropathological-and-immunohistochemical-findings
#2
Sara Degl'Innocenti, Nicola Della Camera, Cristian Falzone, Carlo Cantile
Intravascular lymphoma (IVL) is a rare angiotropic large-cell lymphoma in which neoplastic lymphocytes proliferate within the lumina of small blood vessels in the absence of a primary extravascular mass or leukemia. This study included 10 cases of canine IVL restricted to the CNS. Dogs had an average age of 8 years and neurological signs mainly referred to brain involvement such as depression, seizures, and ambulatory deficits. Gross examination at necropsy showed focal extensive or multiple hemorrhagic areas mainly distributed in the telencephalon and diencephalon...
October 5, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/30279973/correction-comparative-oncology-dna-sequencing-of-canine-t-cell-lymphoma-via-human-hotspot-panel
#3
J Tyson McDonald, Athena Kritharis, Afshin Beheshti, Monika Pilichowska, Kristine Burgess, Luisel Ricks-Santi, Elizabeth McNiel, Cheryl A London, Dashnamoorthy Ravi, Andrew M Evens
[This corrects the article DOI: 10.18632/oncotarget.25209.].
September 7, 2018: Oncotarget
https://www.readbyqxmd.com/read/30278836/immunohistochemical-profiling-of-canine-intestinal-t-cell-lymphomas
#4
Isao Matsumoto, Ko Nakashima, Yuko Goto-Koshino, James Kenn Chambers, Hajime Tsujimoto, Hiroyuki Nakayama, Kazuyuki Uchida
Human enteropathy-associated T-cell lymphoma (EATL) is classified into 2 distinct subgroups based on their phenotypes (type I and type II). Canine intestinal T-cell lymphoma can be morphologically classified into large and small cell lymphomas (LCL and SCL, respectively). Their association with human EATL or immunohistochemical and biological features has not been well characterized. In this study, the immunohistochemical profiles of 17 cases of LCL and 33 cases of SCL were evaluated with markers used for human EATL classification...
October 3, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/30262145/canine-and-feline-cutaneous-epitheliotropic-lymphoma-and-cutaneous-lymphocytosis
#5
REVIEW
Kathryn A Rook
Cutaneous lymphomas are divided into categories based on histologic evaluation of the skin and location of neoplastic lymphocytes. Epitheliotropic cutaneous lymphoma, also known as cutaneous T-cell lymphoma, is diagnosed when neoplastic lymphocytes show tropism for the epidermis and these cells infiltrate the epidermis and adnexae. In diagnosis of nonepitheliotropic cutaneous lymphoma, neoplastic lymphocytes are found mostly in the dermis and/or subcutis. Neoplastic cells are of either B-cell or T-cell origin...
September 24, 2018: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/30239048/predominance-of-hypoechoic-tissue-changes-in-nine-dogs-with-malignant-prostatic-lymphoma
#6
Pamela Di Donato, Raffaela Zweifel, Kernt Koehler, Lorenzo Golini, Lorenzo Ressel, Martin Kramer, Ingmar Kiefer, Chee Kin Lim, Nele Ondreka
Neoplasia of the prostate is relatively uncommon in dogs with adenocarcinoma being the most common type. Non-epithelial tumors are rare and only individual cases of malignant lymphoma affecting the prostate have been reported. The purpose of this multi-institutional, retrospective, descriptive study was to characterize the ultrasonographic features of canine prostatic lymphoma. Inclusion criteria were an abdominal ultrasound and cytological/histological diagnosis of malignant prostatic lymphoma. Ultrasonographic features were recorded based on the original ultrasonographic reports and consensus opinion of two readers on the available image sets retrospectively...
September 21, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/30229963/a-case-of-canine-high-grade-t-cell-lymphoma-immunophenotypically-consistent-with-t-zone-lymphoma
#7
Cyril Parachini-Winter, Kaitlin M Curran, Duncan S Russell, Elena Gorman
A 9-year-old spayed female Curly Coated Retriever was referred for evaluation of generalized peripheral lymphadenomegaly. The dog was clinically healthy on presentation with no anomalies detected on complete blood count, serum biochemistry, urinalysis, or three-view thoracic radiographs. Fine-needle aspiration (FNA) and cytology of the peripheral lymph nodes were consistent with lymphoma with an intermediate-sized lymphoid population. Flow cytometry of peripheral lymph nodes was consistent with a homogeneous population of CD4+ T cells that had lost expression of the pan-leukocyte antigen CD45...
September 19, 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/30213369/computerized-cytomorphometric-and-cytomorphological-analysis-of-canine-transmissible-venereal-tumours
#8
C Setthawongsin, S Tangkawattana, A Rungsipipat, S Techangamsuwan
Canine transmissible venereal tumour (CTVT) has three cytomorphological types: plasmacytic, lymphocytic and mixed type. Cytomorphometry, a method of computerized image analysis, has been used recently in veterinary medicine. This study compared the nuclear and cellular morphometric parameters (i.e. radius, diameter, perimeter and area) in different types of CTVT with other canine round cell tumours including lymphoma, mast cell tumour (MCT) and histiocytic tumour (HCT). We also evaluated the relationship between clinical information and the different CTVT cytomorphologic types...
August 2018: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/30173856/flow-cytometric-characterization-of-s-phase-fraction-and-ploidy-in-lymph-node-aspirates-from-dogs-with-lymphoma
#9
B Miniscalco, A Poggi, V Martini, E Morello, M Sulce, M Melega, A Borrelli, A Tarducci, F Riondato
Canine lymphoma is a multifaceted disease encompassing numerous entities with different prognosis. Objective assessment of the proliferation rate is of importance from the pathological and clinical perspectives. Different methods have been described in the literature to assess proliferation rate, including evaluation of Ki67 expression in fresh lymph node (LN) aspirates measured by flow cytometry (FC). This test has a high accuracy in discriminating between low- and high-grade lymphomas, and provides prognostic information among high-grade B-cell lymphomas...
May 2018: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/30159932/phenotypic-analysis-of-mice-xenografted-with-canine-epitheliotropic-cutaneous-t-cell-lymphoma-cells
#10
Miho Ikeuchi, Ryota Asahina, Hidetaka Nishida, Hiroaki Kamishina, Katsuya Kitoh, Hiroki Sakai, Sadatoshi Maeda
BACKGROUND: In canine epitheliotropic cutaneous T-cell lymphoma (ECTCL), neoplastic cells cause skin lesions and potentially metastasize to lymph nodes, blood and other organs. Murine models are potentially valuable for elucidating the molecular mechanisms responsible for regulation of ECTCL cell migration. HYPOTHESIS/OBJECTIVES: To describe a phenotype of mice xenografted with canine ECTCL cells (EO-1 cells). ANIMALS: Four NOD.CB17-Prkdcscid /J (NOD SCID) mice were used...
August 30, 2018: Veterinary Dermatology
https://www.readbyqxmd.com/read/30150429/antitumor-activity-of-betulinic-acid-and-betulin-in-canine-cancer-cell-lines
#11
Jing Zhao, Rongfang Li, Aleksandra Pawlak, Marta Henklewska, Angelika Sysak, Lixin Wen, Jin-E Yi, Bożena Obmińska-Mrukowicz
BACKGROUND/AIM: Betulinic acid (BA) and betulin (BT) exhibit a variety of pharmacological properties including anti-cancer, anti-inflammatory and anti-oxidant ones. Canine lymphoma and osteosarcoma have a high mortality rate and need more effective therapeutic approaches. In this study, the anti-proliferative and pro-apoptotic effects of BA and BT were investigated in canine T-cell lymphoma (CL-1), canine B-cell lymphoma (CLBL-1) and canine osteosarcoma (D-17) cell lines. MATERIALS AND METHODS: The cultured cells were treated with several concentrations of BA or BT for 24, 48 and 72 h, and cell proliferation was assessed by the MTT assay...
September 2018: In Vivo
https://www.readbyqxmd.com/read/30143046/phase-ii-study-of-the-oral-selective-inhibitor-of-nuclear-export-sine-kpt-335-verdinexor-in-dogs-with-lymphoma
#12
Abbey R Sadowski, Heather L Gardner, Antonella Borgatti, Heather Wilson, David M Vail, Joshua Lachowicz, Christina Manley, Avenelle Turner, Mary K Klein, Angharad Waite, Alexandra Sahora, Cheryl A London
BACKGROUND: Chemotherapeutic options for the treatment of canine lymphoma have not changed in several decades necessitating the identification of new therapeutics to improve patient outcome. KPT-335 (verdinexor) is a novel orally bioavailable selective inhibitor of nuclear export (SINE) that exhibited anti-tumor activity against non-Hodgkin lymphoma in a prior phase I study. The objective of this phase II study was to expand upon the initial findings and assess the activity and safety in a larger population of dogs with lymphoma...
August 24, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/30129396/cd3-and-cd20-co-expression-in-a-case-of-canine-peripheral-t-cell-lymphoma-with-prominent-cardiac-and-peripheral-nerve-involvement
#13
Shotaro Nakagun, Noriyuki Horiuchi, Kenichi Watanabe, Kotaro Matsumoto, Michihito Tagawa, Genya Shimbo, Yoshiyasu Kobayashi
An 8-y 9-mo-old male Pug dog was presented because of anorexia, hindlimb ataxia, vomiting, and progressive weight loss. Clinical examinations revealed atrophic hindlimb muscles with decreased postural reaction, enlargement of the cardiac silhouette and megaesophagus on radiograph, and reduced cardiac contractility on ultrasonography. The dog died 10 d after the initial examination, and an autopsy was performed. Grossly, the heart was enlarged, with multifocal-to-coalescing extensive plaque-like areas of discoloration on the epicardial surface...
September 2018: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/30123960/contrast-enhanced-computed-tomography-may-be-helpful-for-characterizing-and-staging-canine-gastric-tumors
#14
Toshiyuki Tanaka, Hideo Akiyoshi, Keiichiro Mie, Mari Okamoto, Yuuki Yoshida, Shohei Kurokawa
In humans, computed tomography (CT) is a widely performed technique for the diagnosis and staging of gastric tumors. The purpose of this retrospective case series study was to describe CT findings in a group of dogs with confirmed gastric tumors. For each included dog, the following CT parameters were recorded: gastric tumor location, tumor shape, gastric involvement pattern, tumor enhancement pattern in early and late phases, presence and location of lymphadenopathy, gastric tumor attenuation values, attenuation values of enlarged lymph nodes, maximum short-axis diameter (mm) of enlarged lymph node, maximum long-axis diameter (mm) of enlarged lymph node, and short-axis diameter to long-axis diameter ratio (short axis/long axis)...
August 19, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/30117260/response-rate-to-a-single-dose-of-vinblastine-administered-to-dogs-with-treatment-naive-multicentric-lymphoma
#15
K Harding, N Bergman, A Smith, S Lindley, A Szivek, R Milner, W Brawner, A Lejeune
Vincristine is included in vincristine, cyclophosphamide, doxorubicin and prednisone (CHOP) chemotherapy protocols, which are the gold-standard treatment for high-grade canine lymphoma. Vincristine can result in relatively high rates of gastrointestinal toxicity, whereas vinblastine is generally well tolerated and thus may represent an under-utilized and minimally toxic alternative to vincristine. Our objective was to determine the response rate and toxicity associated with a single dose of vinblastine administered to dogs with treatment-naïve, intermediate to large-cell, multicentric lymphoma...
August 16, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/30117253/canine-t-cell-lymphoma-treated-with-lomustine-vincristine-procarbazine-and-prednisolone-chemotherapy-in-35-dogs
#16
E Morgan, K O'Connell, M Thomson, A Griffin
Canine T cell lymphoma has previously been found to be a poor prognostic indicator compared with its B cell counterpart. The cyclophosphamide, doxorubicin, vincristine, and prednisolone protocol is widely accepted as a first line treatment for canine lymphoma. There have been several studies investigating alternative protocols for T cell lymphoma. This study investigated the use of a modified lomustine, vincristine, procarbazine and prednisolone protocol as a first line treatment in 35 dogs with T Cell lymphoma...
August 16, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/30101447/targeting-nedd8-activating-enzyme-is-a-new-approach-to-treat-canine-diffuse-large-b-cell-lymphoma
#17
A L F V Assumpção, Z Lu, K W Marlowe, K S Shaffer, X Pan
Canine diffuse large B-cell lymphoma (DLBCL), the most common hematologic malignancy of dogs, is associated with poor overall survival. The lack of conventional chemotherapies with sustainable efficacy warrants investigation of novel therapies. Pevonedistat (MLN4924) is a potent and selective small molecule NEDD8-activating enzyme inhibitor. In human activated B-cell-like (ABC) diffuse large B-cell lymphoma, pevonedistat induces lymphoma cell apoptosis, DNA damage and G1 cell cycle arrest by inhibiting the nuclear factor-κB (NF-κB) pathway...
August 13, 2018: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/30085860/quantification-and-prognostic-value-of-programmed-cell-death-ligand-1-expression-in-dogs-with-diffuse-large-b-cell-lymphoma
#18
Lisbeth A Ambrosius, Deepika Dhawan, José A Ramos-Vara, Audrey Ruple, Deborah W Knapp, Michael O Childress
OBJECTIVE To measure programmed cell death ligand-1 (PD-L1) mRNA expression in archived primary nodal diffuse large B-cell lymphoma (DLBCL) specimens of dogs and determine whether that expression was associated with progression-free survival time (PFST). SAMPLE Archived tumoral lymph node specimens from 42 dogs with DLBCL and lymph node specimens from 10 healthy dogs (controls). PROCEDURES Archived tumoral and control lymph node specimens underwent multiplex qPCR analysis with probes and primers against canine PD-L1 and glyceraldehyde 3-phosphate dehydrogenase (housekeeping gene) to determine PD-L1 mRNA expression...
June 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/30081964/breed-associated-risks-for-developing-canine-lymphoma-differ-among-countries-an-european-canine-lymphoma-network-study
#19
Stefano Comazzi, Stefano Marelli, Marzia Cozzi, Rita Rizzi, Riccardo Finotello, Joaquim Henriques, Josep Pastor, Frederique Ponce, Carla Rohrer-Bley, Barbara C Rütgen, Erik Teske
BACKGROUND: Canine breeds may be considered good animal models for the study of genetic predisposition to cancer, as they represent genetic clusters. From epidemiologic and case collection studies it emerges that some breeds are more likely to develop lymphoma or specific subtypes of lymphoma but available data are variable and geographically inconsistent. This study was born in the context of the European Canine Lymphoma Network with the aim of investigating the breed prevalence of canine lymphoma in different European countries and of investigating possible breed risk of lymphoma overall and/or different lymphoma subtypes...
August 6, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/30071780/subcutaneous-panniculitis-like-t-cell-lymphoma-in-dogs-morphologic-and-immunohistochemical-classification
#20
Erica L Noland, Stefan M Keller, Matti Kiupel
Canine nonepitheliotropic cutaneous T-cell lymphomas (NECTCL) are poorly characterized. In humans, a number of distinct subtypes of NECTCL have been recognized, including subcutaneous panniculitis-like T-cell lymphoma (SPTCL). Five dogs with subcutaneous T-cell lymphomas histologically similar to SPTCL in humans are herein described. The mean age was 8.5 years (5.5 to 12 years). No breed or sex predilection was identified in this small cohort. Two dogs presented with an acute onset of multiple skin masses and 3 dogs had solitary masses with subsequent development of multiple smaller masses within 0...
August 2, 2018: Veterinary Pathology
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