What is your diagnosis? Cerebrospinal fluid from a dog     

Stowe DM  Escobar C  Neel JA 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2012,41(3):429-430

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Response rate and duration associated with a 4Gy 5 fraction palliative radiation protocol     

McDonald C  Looper J  Greene S 《Veterinary radiology & ultrasound》2012,53(3):358-364

The purpose of this retrospective study was to determine if 4Gy fractions over 5 consecutive days is an effective and safe palliative radiation protocol for dogs and cats. Eighty patients (22 cats, 58 dogs) with complete follow-up information were evaluated. Overall response rate (ORR) for all patients was 67%. Median progression free survival (MPFS) was 3.3 months and median survival (MST) was 4.2 months. Primary bone tumors were the most common tumors treated. The ORR for primary bone tumors was 66.6%, the MPFS was 3.5 months, and MST was 3 months. The most common tumor treated in cats was oral squamous cell carcinoma and ORR was 54.5 %, the MPFS was 1.8 months, and MST was 3 months. Soft tissue sarcomas were the second most common tumor treated in dogs (10). ORR was 80% and the two other patients had stable disease. MPFS was 5.7 months and MST was 7.9 months. Overall rate of toxicity was 18.4% in 65 sites that were evaluated for toxicity. Acute toxicities were all grade I or II and occurred in 16.9 % of patients evaluated. All late toxicity was grade I alopecia and leukotrichia. There appears to be a comparable response rate for this palliative protocol as compared to others historically. This response was seen over a wide range of tumors. We also documented a low toxicity profile in a shorter overall treatment time, making this protocol more attractive for some clients.  相似文献   

Masitinib demonstrates anti-proliferative and pro-apoptotic activity in primary and metastatic feline injection-site sarcoma cells     

Lawrence J  Saba C  Gogal R  Lamberth O  Vandenplas ML  Hurley DJ  Dubreuil P  Hermine O  Dobbin K  Turek M 《Veterinary and comparative oncology》2012,10(2):143-154

Dysregulation of platelet-derived growth factor receptor (PDGFR) may play a role in feline injection-site sarcoma (ISS) cell growth and viability. Masitinib, a tyrosine kinase inhibitor approved for treatment of canine mast cell tumours, is highly selective for the PDGFR signalling pathway and may offer a new therapeutic approach for this disease. The in vitro effects of masitinib on growth, apoptosis and PDGFR signalling in two novel ISS cell lines were investigated. PDGFR expression was confirmed by Western blot in cell lines derived from a primary ISS tumour (JB) and a corresponding, histologically confirmed ISS lung metastasis (JBLM). Masitinib inhibited cell growth and PDGFR phosphorylation in both cell lines. Higher drug concentrations were required to inhibit growth than to modulate ligand-induced autophosphorylation of PDGFR. These in vitro data suggest that masitinib displays activity against both primary and metastatic ISS cell line and may aid in the clinical management of ISS.  相似文献   

Clinical and computed tomography tumour dimension assessments for planning wide excision of injection site sarcomas in cats: how strong is the agreement?          下载免费PDF全文

R. Ferrari  M. Di Giancamillo  D. Stefanello  C. Giudice  V. Grieco  M. Longo  G. Ravasio  P. Boracchi 《Veterinary and comparative oncology》2017,15(2):374-382

In injection site sarcoma (ISS) in cats lateral as well as deep margins should be correctly planned for a successful surgical outcome. The discrepancy between clinical and computed tomography (CT) measurements of dimension in resectable tumour has led to possible bias that affects the subsequent surgical dose. The aim of this study was to prospectively investigate the agreement between clinical and CT measurements of dimension in newly diagnosed ISS in cats. Fifty‐three client‐owned cats that underwent both clinical and CT measurements of the length and width of ISS were included. CT measurements showed a tendency towards being larger than clinical dimensions, and this difference increased with increasing tumour size. Based on our results, in further studies focusing on ISS in cats, the kind of assessment used to define tumour dimensions (CT versus clinic) should be declared and specified to properly consider surgical results and prognostic impact of this variable.  相似文献   

蜂王浆不同组分对荷S180肿瘤小鼠免疫效果的影响     

曾星凯  颜伟玉  谢国秀  吴小波  曾志将 《湖北农业科学》2009,48(10)

将新鲜蜂王浆经过180目滤网过滤,滤液再逐步经过0.50 μm、0.10μm和0.05 μm的无机陶瓷膜过滤,分别得到了5种蜂王浆活性组分,测定新鲜蜂王浆及各活性组分的癸烯酸含量.将88只荷瘤小鼠随机分为环磷酰胺组(40mg/kg)、模型对照组、蜂王浆及各组分实验组,连续灌胃4周.观察小鼠一般状况,测定抑瘤率和脏体系数,以探讨蜂王浆各组分对荷S180肿瘤小鼠的免疫效果.结果表明,除新鲜王浆先后经过180目滤网,0.50μm和0.10μm无机陶瓷膜过滤的组分外,其他各蜂王浆组分与对照组比较对降低瘤体重量差异不显著,其中E组抑瘤率最高达45.52%.说明蜂王浆不同活性组分对荷S180肿瘤小鼠抗癌作用有差异.  相似文献   

重离子12C6+治疗小鼠移植性肿瘤S180的试验研究   总被引：1，自引：0，他引：1  

王靖飞  姜永萍  梁剑平  陈怀涛  卫增泉 《动物医学进展》2002,23(5):55-57

从实验肿瘤学、肿瘤病理学等角度对碳离子治疗小鼠移植性肿瘤S180进行了研究，结果表明，在有氧和急性缺氧情况下碳离子可有效治疗小鼠移植性肿瘤，碳粒子照射后主要引起肿瘤组织的坏死变化。  相似文献   

Flow cytometric evaluation of hemophagocytic disorders in canine   总被引：1，自引：0，他引：1  

Weiss DJ 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2002,31(1):36-41

Background — Hemophagocytic macrophages in canine bone marrow are observed in malignant histiocytosis as well as benign hemophagocytic histiocytosis. Cytomorphologic evaluation alone may be inadequate to consistently differentiate between benign and malignant forms of hemophagocytic disorders. Objective — The purpose of this study was to evaluate the ability of flow cytometry and immunophenotyping to differentiate between benign and malignant types of hemophagocytic disorders in dogs. Methods — Blood smears and bone marrow differential cell counts were evaluated for 10 dogs with hemophagocytic disorders. Bone marrow samples were labeled with monoclonal antibodies to CD18, MCH class‐II, Thy‐1, CD14, CD3, and CD21. Using flow cytometry, forward‐angle versus side‐angle light scatter plots were analyzed and immunophenotypes were determined. Results — Scatter plots from 3 dogs with a necropsy diagnosis of malignant histiocytosis revealed 2 atypical cell clusters. One cluster contained cells of similar size or larger than immature myeloid cells and metamyelocytes. Cells in the other cluster were highly granular, with granularity similar to or greater than that of metamyelocytes. In bone marrow from dogs with malignant histiocytosis that was labeled with anti‐CD14 antibody, macrophages represented 29–48% of nucleated cells. Seven dogs had a clinical or histopathologic diagnosis of benign hemophagocytic syndrome. Three of the dogs had normal cell distribution in scatter plots. Two dogs had 2 abnormal cell clusters: 1 within the immature myeloid and metamyelocyte gates and the other with granularity similar to or greater than that of metamyelocytes. The remaining 2 dogs had an atypical cell population, mostly within the immature myeloid gate. For dogs with benign hemophagocytic syndromes, 6–17% of cells in the bone marrow were CD14 positive. Conclusions — The cellular distribution in scatter plots and the total number of macrophages in bone marrow may be useful in differentiating malignant histiocytosis from benign hemophagocytic syndromes in dogs.  相似文献   

What is your diagnosis? Abdominal fluid from an adult alpaca          下载免费PDF全文

Nicholas J. Sorensen  Robin W. Allison 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2015,44(3):459-460

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Phagocytic plasmacytoma in a dog     

Yearley JH  Stanton C  Olivry T  Dean GA 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2007,36(3):293-296

A 4-year-old neutered male Golden Retriever was presented to the oncology service of the North Carolina State University Veterinary Teaching Hospital for staging of a histiocytic sarcoma of the left forelimb, diagnosed on the basis of biopsies submitted by the referring veterinarian. Cytologic assessment of aspirates of 2 splenic nodules identified on ultrasonographic examination of the abdomen revealed a highly phagocytic population of neoplastic round cells morphologically suggestive of plasma cells. Histologic assessment of the forelimb mass after amputation of the limb revealed a neoplastic round cell population demonstrating extensive cytophagia and erythrophagia. Immunohistochemical analysis of the tumor population revealed it to be negative for BLA.36 with sporadic positivity for lysozyme and CD79a. Immunofluorescent evaluation revealed weak tumor cell positivity for immunoglobulin (Ig) A and IgM, but extensive strong positivity for IgG, confirming the plasma cell origin of the tumor. Although extensive phagocytic activity may strongly suggest histiocytic origin, plasma cell origin must also be considered among the differential diagnoses for phagocytic round cell tumors.  相似文献   

Single-agent pamidronate for palliative therapy of canine appendicular osteosarcoma bone pain   总被引：1，自引：0，他引：1  

Fan TM  de Lorimier LP  O'Dell-Anderson K  Lacoste HI  Charney SC 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2007,21(3):431-439

BACKGROUND: Canine appendicular osteosarcoma (OSA) causes focal bone destruction, leading to chronic pain and reduced quality-of-life scores. Drugs that inhibit pathologic osteolysis might provide additional treatment options for managing cancer-induced bone pain. Aminobisphosphonates induce osteoclast apoptosis, thereby reducing pain associated with malignant osteolysis in human patients with cancer. HYPOTHESIS: Treatment of dogs with pamidronate administered intravenously will alleviate bone pain and reduce pathologic bone turnover associated with appendicular OSA in dogs. ANIMALS: Forty-three dogs with naturally occurring appendicular OSA administered pamidronate intravenously. METHODS: Prospective study. Therapeutic responses in dogs treated with pamidronate administered intravenously and nonsteroidal anti-inflammatory drugs (NSAID) were evaluated by using a numerical cumulative pain index score (CPIS), and by quantifying urine N-telopeptide (NTx) excretion and relative primary tumor bone mineral density (rBMD) assessed with dual energy x-ray absorptiometry. In addition, variables, including pamidronate dose, skeletal mass, baseline and change for CPIS, urine NTx and rBMD during treatment, and baseline tumor volume and radiographic pattern were compared between dogs clinically responsive and nonresponsive to pamidronate therapy. RESULTS: Twelve of 43 dogs (28%) had pain alleviation for >4 months, lasting a median of 231 days. Changes in CPIS and rBMD during treatment were statistically different between responders and nonresponders (P = .046 and .03, respectively). CONCLUSIONS AND CLINICAL IMPORTANCE: Substantiated by reductions in CPIS and increases in rBMD, single-agent pamidronate administered intravenously with NSAID therapy relieves pain and diminishes pathologic bone turnover associated with appendicular OSA in a subset of dogs.  相似文献