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https://www.readbyqxmd.com/read/28620942/a-dose-escalation-study-of-combretastatin-a4-phosphate-in-healthy-dogs
#1
E Abma, P Smets, S Daminet, I Cornelis, K De Clercq, Y Ni, L Vlerick, H de Rooster
Combretastatin A4-Phosphate (CA4P) is a vascular disrupting agent revealing promising results in cancer treatments for humans. The aim of this study was to investigate the safety and adverse events of CA4P in healthy dogs as a prerequisite to application of CA4P in dogs with cancer. Ten healthy dogs were included. The effects of escalating doses of CA4P on physical, haematological and biochemical parameters, systolic arterial blood pressure, electrocardiogram, echocardiographic variables and general wellbeing were characterised...
June 16, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28618224/design-synthesis-and-structure-activity-relationship-of-tetrahydropyrido-4-3-d-pyrimidine-derivatives-as-potent-smoothened-antagonists-with-in-vivo-activity
#2
Wenfeng Lu, Yongqiang Liu, Haikuo Ma, Jiyue Zheng, Sheng Tian, Zhijian Sun, Lusong Luo, Jiajun Li, Hongjian Zhang, Zeng-Jie Yang, Xiaohu Zhang
Medulloblastoma is one of the most prevalent brain tumors in children. Aberrant hedgehog (Hh) pathway signaling is thought to be involved in the initiation and development of medulloblastoma. Vismodegib, the first FDA-approved cancer therapy based on inhibition of aberrant hedgehog signaling, targets smoothened (Smo), a G-protein coupled receptor (GPCR) central to the Hh pathway. Although vismodegib exhibits promising therapeutic efficacy in tumor treatment, concerns have been raised from its non-linear pharmacokinetic (PK) profiles at high doses partly due to low aqueous solubility...
June 15, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28614971/pilot-study-of-therapy-dog-visits-for-inpatient-youth-with-cancer
#3
Jessica Chubak, Rene Hawkes, Christi Dudzik, Jessica M Foose-Foster, Lauren Eaton, Rebecca H Johnson, Catherine Fiona Macpherson
This study assessed the feasibility of studying animal-assisted activities (AAA) in inpatient pediatric oncology and collected preliminary data on potential benefits of AAA for this population. Patients at a large pediatric hospital were identified using electronic medical records and approached with physician approval. Patients completed surveys before and after a therapy dog visit in their private hospital room. Data on infections were ascertained by electronic medical record review. Provider surveys were placed in provider common areas and distributed through a link in an e-mail...
June 1, 2017: Journal of Pediatric Oncology Nursing: Official Journal of the Association of Pediatric Oncology Nurses
https://www.readbyqxmd.com/read/28608404/apoptotic-intrinsic-pathway-proteins-predict-survival-in-canine-cutaneous-mast-cell-tumours
#4
C N Barra, B M Macedo, K G Cadrobbi, L H Pulz, G C Huete, S R Kleeb, J G Xavier, J L Catão-Dias, A T Nishiya, H Fukumasu, R F Strefezzi
Mast cell tumours (MCTs) are the most frequent canine round cell neoplasms and show variable biological behaviours with high metastatic and recurrence rates. The disease is treated surgically and wide margins are recommended. Adjuvant chemotherapy and radiotherapy used in this disease cause DNA damage in neoplastic cells, which is aimed to induce apoptotic cell death. Resisting cell death is a hallmark of cancer, which contributes to the development and progression of tumours. The aim of this study was to investigate the expression of the proteins involved in the apoptotic intrinsic pathway and to evaluate their potential use as prognostic markers for canine cutaneous MCTs...
June 13, 2017: Veterinary and Comparative Oncology
https://www.readbyqxmd.com/read/28604216/assisted-therapy-with-dogs-in-cancer-services
#5
(no author information available yet)
Background [Figure: see text] Healthcare professionals are keen to find alternative therapies to reduce the stress of hospital admissions, especially in the treatment of cancer. Animal-assisted therapy (AAT) involves using animals to help improve patients' health and well-being, and can alleviate stressful situations.
June 12, 2017: Nursing Children and Young People
https://www.readbyqxmd.com/read/28590915/cancer-sniffer-dogs-how-can-we-translate-this-peculiarity-in-laboratory-medicine-results-of-a-pilot-study-on-gastrointestinal-cancers
#6
Concetta Panebianco, Edgar Kelman, Kristel Vene, Domenica Gioffreda, Francesca Tavano, Raivo Vilu, Fulvia Terracciano, Illar Pata, Kaarel Adamberg, Angelo Andriulli, Valerio Pazienza
BACKGROUND: Identification of cancer biomarkers to allow early diagnosis is an urgent need for many types of tumors, whose prognosis strongly depends on the stage of the disease. Canine olfactory testing for detecting cancer is an emerging field of investigation. As an alternative, here we propose to use GC-Olfactometry (GC/O), which enables the speeding up of targeted biomarker identification and analysis. A pilot study was conducted in order to determine odor-active compounds in urine that discriminate patients with gastrointestinal cancers from control samples (healthy people)...
June 7, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28580034/the-effect-of-co0-2mn0-8fe2o4-ferrite-nanoparticles-on-the-c2-canine-mastocytoma-cell-line-and-adipose-derived-mesenchymal-stromal-stem-cells-ascs-cultured-under-a-static-magnetic-field-possible-implications-in-the-treatment-of-dog-mastocytoma
#7
K Marycz, M Marędziak, D Lewandowski, E Zachanowicz, A Zięcina, R J Wiglusz, R Pązik
Cobalt manganese ferrite nanoparticles have application potential in the biomedical field, however there is limited information concerning the biological response. The aim of this work was to investigate the cytotoxic potential of cobalt-manganese ferrite nanoparticles in canine mastocytoma tumor cells (C2) and adipose-derived mesenchymal stromal stem cells (ASCs) cultured under a static magnetic field (MF). In this study, we investigated the viability and proliferation rate of ASC and C2 cells cultured with Co0...
2017: Cellular and Molecular Bioengineering
https://www.readbyqxmd.com/read/28578631/surfactant-protein-a-and-napsin-a-in-the-immunohistochemical-characterization-of-canine-pulmonary-carcinomas-comparison-with-thyroid-transcription-factor-1
#8
Jessica Beck, Margaret A Miller, Chad Frank, Dee DuSold, José Antonio Ramos-Vara
Thyroid transcription factor-1 (TTF-1) is a specific and sensitive marker for canine pulmonary tumors but is also expressed in thyroid carcinomas, which commonly metastasize to lung. Napsin A and surfactant protein A (SP-A) are used in the histologic diagnosis of non-small-cell lung cancer in humans but have not been thoroughly evaluated in neoplasms of dogs. The objective of this study was to compare the efficacy of immunohistochemistry for SP-A, napsin A, and TTF-1 in the diagnosis of canine pulmonary carcinomas...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28560045/correlation-of-neuter-status-and-expression-of-heritable-disorders
#9
Janelle M Belanger, Thomas P Bellumori, Danika L Bannasch, Thomas R Famula, Anita M Oberbauer
BACKGROUND: Gonadectomy, or neutering, is a very common surgery for dogs having many positive effects on behavior, health, and longevity. There are also certain risks associated with neutering including the development of orthopedic conditions, cognitive decline, and a predisposition to some neoplasias. This study was designed specifically to identify if a correlation exists between neuter status and inherited conditions in a large aggregate cohort of dogs representing many different breeds...
2017: Canine Genetics and Epidemiology
https://www.readbyqxmd.com/read/28555480/assessing-effects-of-structural-zeros-on-models-of-canine-cancer-incidence-a-case-study-of-the-swiss-canine-cancer-registry
#10
Gianluca Boo, Stefan Leyk, Sara Irina Fabrikant, Andreas Pospischil, Ramona Graf
Epidemiological research of canine cancers could inform comparative studies of environmental determinants for a number of human cancers. However, such an approach is currently limited because canine cancer data sources are still few in number and often incomplete. Incompleteness is typically due to under-ascertainment of canine cancers. A main reason for this is because dog owners commonly do not seek veterinary care for this diagnosis. Deeper knowledge on under-ascertainment is critical for modelling canine cancer incidence, as an indication of zero incidence might originate from the sole absence of diagnostic examinations within a given sample unit...
May 11, 2017: Geospatial Health
https://www.readbyqxmd.com/read/28549201/cytogenetic-aspects-of-a-canine-breast-carcinosarcoma-a-case-report
#11
C S D Morais, P R A M Affonso, J A Bitencourt, A A Wenceslau
This study searched a rare and aggressive type of cancer in dogs and humans, the breast carcinosarcoma. Both clinical and pathological traits of mammary carcinosarcomas in dogs are similar to humans, such as infrequent occurrence, fast tumor growth, and unfavorable prognosis when compared to carcinomas. Other possible alterations include chromosomal abnormalities that can be useful for the identification of tumoral cells and diagnosis. The aim of this study was to compare the chromosomal features of peripheral lymphocytes and tumor cells in a mammary carcinosarcoma of a 14-year-old female Poodle...
May 25, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28543945/indirect-computed-tomography-lymphangiography-with-aqueous-contrast-for-evaluation-of-sentinel-lymph-nodes-in-dogs-with-tumors-of-the-head
#12
Janet A Grimes, Scott A Secrest, Nicole C Northrup, Corey F Saba, Chad W Schmiedt
Sentinel lymph node evaluation is widely used in human medicine to evaluate the first lymph node(s) to which a tumor drains. Sentinel lymph node biopsy allows avoidance of extensive lymphadenectomies in cases where the sentinel lymph node is negative for metastasis, thereby reducing patient morbidity. It has been shown that regional lymph nodes are not always the sentinel lymph node, thus identification and sampling of sentinel lymph nodes allows for more accurate staging, which is critical for treatment and prognostication in dogs with cancer...
May 21, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28540728/sulfonation-disposition-of-acacetin-in-vitro-and-in-vivo
#13
Qisong Zhang, Lijun Zhu, Xia Gong, Yanjiao Ruan, Jia Yu, Huangyu Jiang, Ying Wang, XiaoXiao Qi, Linlin Lu, Zhongqiu Liu
Acacetin, an important component of acacia honey, exerts extensive therapeutic effects on many cancers. However, the sulfonation disposition of acacetin has rarely been reported. Therefore, this study aimed to investigate the sulfonation disposition of acacetin systematically. The results showed that acacetin-7-sulfate was the main metabolite mediated primarily by sulfotransferases (SULT) 1A1. Dog liver S9 presented the highest formation rate of acacetin-7-sulfate. Compared with that in wild-type Friend Virus B (FVB) mice, plasma exposure of acacetin-7-sulfate decreased significantly in multidrug resistance protein 1 knockout (Mrp1(-/-)) mice vut increased clearly in breast cancer resistance protein knockout (Bcrp(-/-)) mice...
June 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28531107/analysis-of-gene-expression-signatures-in-cancer-associated-stroma-from-canine-mammary-tumours-reveals-molecular-homology-to-human-breast-carcinomas
#14
Julia Ettlin, Elena Clementi, Parisa Amini, Alexandra Malbon, Enni Markkanen
Cancer-associated stroma (CAS) plays a key role in cancer initiation and progression. Spontaneously occurring canine mammary carcinomas are viewed as excellent models of human breast carcinomas. Considering the importance of CAS for human cancer, it likely plays a central role in canine tumours as well. So far, however, canine CAS lacks characterisation, and it remains unclear whether the biology between CAS from canine and human tumours is comparable. In this proof-of-principle study, using laser-capture microdissection, we isolated CAS and normal stroma from 13 formalin-fixed paraffin embedded canine simple mammary carcinomas and analysed the expression of seven known human CAS markers by RT-qPCR (Reverse Transcription quantitative PCR) and validated some targets by immunohistochemistry...
May 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28512868/metastasis-associated-microrna-expression-in-canine-uveal-melanoma
#15
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/28505386/c-d-box-snornas-form-methylating-and-non-methylating-ribonucleoprotein-complexes-old-dogs-show-new-tricks
#16
REVIEW
Marina Falaleeva, Justin R Welden, Marilyn J Duncan, Stefan Stamm
C/D box snoRNAs (SNORDs) are an abundantly expressed class of short, non-coding RNAs that have been long known to perform 2'-O-methylation of rRNAs. However, approximately half of human SNORDs have no predictable rRNA targets, and numerous SNORDs have been associated with diseases that show no defects in rRNAs, among them Prader-Willi syndrome, Duplication 15q syndrome and cancer. This apparent discrepancy has been addressed by recent studies showing that SNORDs can act to regulate pre-mRNA alternative splicing, mRNA abundance, activate enzymes, and be processed into shorter ncRNAs resembling miRNAs and piRNAs...
June 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28505195/dose-escalation-study-to-evaluate-safety-tolerability-and-efficacy-of-intravenous-etoposide-phosphate-administration-in-27-dogs-with-multicentric-lymphoma
#17
Pierre Boyé, François Serres, Laurent Marescaux, Juliette Hordeaux, Emmanuel Bouchaert, Bruno Gomes, Dominique Tierny
Comparative oncology has shown that naturally occurring canine cancers are of valuable and translatable interest for the understanding of human cancer biology and the characterization of new therapies. This work was part of a comparative oncology project assessing a new, clinical-stage topoisomerase II inhibitor and comparing it with etoposide in dogs with spontaneous lymphoma with the objective to translate findings from dogs to humans. Etoposide is a topoisomerase II inhibitor widely used in various humans' solid and hematopoietic cancer, but little data is available concerning its potential antitumor efficacy in dogs...
2017: PloS One
https://www.readbyqxmd.com/read/28503759/evaluation-of-weight-change-during-carboplatin-therapy-in-dogs-with-appendicular-osteosarcoma
#18
A L Story, S E Boston, J J Kilkenny, A Singh, J P Woods, W T N Culp, K A Skorupski, X Lu
BACKGROUND: The prevalence of cancer cachexia in veterinary medicine has not been studied widely, and as of yet, no definitive diagnostic criteria effectively assess this syndrome in veterinary patients. OBJECTIVES: (1) To determine the patterns of weight change in dogs with appendicular osteosarcoma treated with amputation and single-agent carboplatin during the course of adjuvant chemotherapy; and (2) to determine whether postoperative weight change is a negative prognostic indicator for survival time in dogs with osteosarcoma...
May 15, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28496035/alleviating-effects-of-artificial-tear-instillation-on-s-1-induced-ocular-toxicity-in-dogs
#19
Shohei Kanie, Mitsuhiro Fujieda, Tomoaki Hitotsumachi, Satoshi Suzuki, Fumio Morita, Kazuo Hakoi, Hirofumi Yasui
S-1 is an anticancer agent that consists of tegafur, gimeracil, and oteracil potassium at a molar ratio of 1:0.4:1. S-1 is used to treat metastatic and resectable gastric cancer. However, the extensive use of S-1 in clinical practice results in watery eyes, a serious clinical problem, which worsens patients' quality of life. Although repeated instillation of artificial tears is recommended, therapy or prophylaxis against S-1-induced ocular toxicity has not been established. In the present study, we evaluated the alleviating effects of repeated artificial tear instillation on S-1-induced ocular toxicity in dogs...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28487862/naturally-occurring-canine-invasive-urinary-bladder-cancer-a-complementary-animal-model-to-improve-the-success-rate-in-human-clinical-trials-of-new-cancer-drugs
#20
REVIEW
Christopher M Fulkerson, Deepika Dhawan, Timothy L Ratliff, Noah M Hahn, Deborah W Knapp
Genomic analyses are defining numerous new targets for cancer therapy. Therapies aimed at specific genetic and epigenetic targets in cancer cells as well as expanded development of immunotherapies are placing increased demands on animal models. Traditional experimental models do not possess the collective features (cancer heterogeneity, molecular complexity, invasion, metastasis, and immune cell response) critical to predict success or failure of emerging therapies in humans. There is growing evidence, however, that dogs with specific forms of naturally occurring cancer can serve as highly relevant animal models to complement traditional models...
2017: International Journal of Genomics
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