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https://www.readbyqxmd.com/read/28739839/dog-ownership-supports-the-maintenance-of-physical-activity-during-poor-weather-in-older-english-adults-cross-sectional-results-from-the-epic-norfolk-cohort
#1
Yu-Tzu Wu, Robert Luben, Andy Jones
BACKGROUND: Dog ownership has been suggested to encourage physical activity in older adults and may enhance resilience to poor environmental conditions. This study investigates the role of dog ownership and walking as a means of supporting the maintenance of physical activity in older adults during periods of inclement weather. METHODS: The analysis used data from the European Prospective Investigation into Cancer and Nutrition Norfolk cohort. Daily physical activity (counts per minute) and minutes of sedentary behaviour were measured using accelerometers over 7 days...
July 24, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/28735667/immunohistochemical-expression-of-mcam-cd146-in-canine-melanoma
#2
S Abou Asa
MCAM/CD146 (melanoma cell adhesion molecule/CD146) is a transmembrane immunoglobulin superfamily cell adhesion molecule involved in transendothelial migration and signal transduction. It is expressed in melanoma, squamous cell carcinoma, prostatic, ovarian, cervical and endometrial cancers and promotes tumour growth, angiogenesis and metastasis. Melanoma is the most common malignant oral tumour of dogs and also arises in the skin, nail bed and footpad. The aim of this study was to investigate the immunohistochemical expression of MCAM/CD146 in 51 canine melanomas, including oral, cutaneous and ocular tumours...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28725597/canine-prostate-models-in-preclinical-studies-of-minimally-invasive-interventions-part-i-canine-prostate-anatomy-and-prostate-cancer-models
#3
REVIEW
Fei Sun, Claudia Báez-Díaz, Francisco Miguel Sánchez-Margallo
The high prevalence of prostate cancer (PCa) in elderly men and technical advances in early detection of localized PCa have led to continued efforts to develop new therapeutic options of minimally invasive nature in current urologic oncology community. Increasing newly emerging therapies are undergoing preclinical tests on the technical feasibility, efficacy and safety in animal experiments. The dog is an ideal large animal because of its similar anatomy to human and the capability allowing the use of the same medical devices applied in future clinical trials...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28715311/animal-models-new-biosensors-and-technologies-including-those-for-bone-regrowth-and-wound-healing-advance-animal-health-care-while-also-providing-a-fertile-testing-ground-for-human-health
#4
Summer Allen
Dogs have bad breath. But when Montana sheep rancher Katy Harjes noticed her collie, Hoshi, had particularly bad breath and facial swelling, she was concerned that the symptoms might be a sign of something serious. She was right; ten-year-old Hoshi had squamous cell carcinoma, a common type of oral tumor found in dogs. The cancer had not metastasized, but the damage was extensive enough that part of Hoshi's lower jaw needed to be removed. Luckily, Hoshi was a suitable candidate for a stateof-the-art bone regrowth procedure developed by Frank Verstraete, B...
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28713573/a-monograph-proposing-the-use-of-canine-mammary-tumours-as-a-model-for-the-study-of-hereditary-breast-cancer-susceptibility-genes-in-humans
#5
REVIEW
Katie Goebel, Nancy D Merner
Canines are excellent models for cancer studies due to their similar physiology and genomic sequence to humans, companion status and limited intra-breed heterogeneity. Due to their affliction to mammary cancers, canines can serve as powerful genetic models of hereditary breast cancers. Variants within known human breast cancer susceptibility genes only explain a fraction of familial cases. Thus, further discovery is necessary but such efforts have been thwarted by genetic heterogeneity. Reducing heterogeneity is key, and studying isolated human populations have helped in the endeavour...
May 2017: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/28708601/synergistic-and-targeted-therapy-with-a-procaspase-3-activator-and-temozolomide-extends-survival-in-glioma-rodent-models-and-is-feasible-for-the-treatment-of-canine-malignant-glioma-patients
#6
Avadhut D Joshi, Rachel C Botham, Lisa J Schlein, Howard S Roth, Antonella Mangraviti, Alexandra Borodovsky, Betty Tyler, Steve Joslyn, Jayme S Looper, Michael Podell, Timothy M Fan, Paul J Hergenrother, Gregory J Riggins
PURPOSE: Glioblastoma is a deadly brain cancer with a median survival time of ~15 months. Ionizing radiation plus the DNA alkylator temozolomide (TMZ) is the current standard therapy. PAC-1, a procaspase-3 activating small molecule, is blood-brain barrier penetrant and has previously demonstrated ability to synergize with diverse pro-apoptotic chemotherapeutics. We studied if PAC-1 could enhance the activity of TMZ, and whether addition of PAC-1 to standard treatment would be feasible in spontaneous canine malignant gliomas...
July 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28704919/the-role-of-radiation-induced-injury-on-lung-cancer
#7
Stephanie Puukila, Christopher Thome, Antone L Brooks, Gayle Woloschak, Douglas R Boreham
This manuscript evaluates the role of cell killing, tissue disorganization, and tissue damage on the induction of lung cancer following low dose rate radiation exposures from internally deposited radioactive materials. Beagle dogs were exposed by inhalation to (90)Y, (91)Y, (144)Ce, or (90)Sr in fused clay particles. Dogs lived out their life span with complete pathology conducted at the time of death. The radiation dose per cell turnover was characterized and related to the cause of death for each animal. Large doses per cell turnover resulted in acute death from lung damage with extensive cell killing, tissue disorganization, chronic inflammatory disease, fibrosis, and pneumonitis...
July 12, 2017: Cancers
https://www.readbyqxmd.com/read/28697872/life-course-analysis-of-the-impact-of-mammary-cancer-and-pyometra-on-age-anchored-life-expectancy-in-female-rottweilers-implications-for-envisioning-ovary-conservation-as-a-strategy-to-promote-healthy-longevity-in-pet-dogs
#8
D J Waters, S S Kengeri, A H Maras, C L Suckow, E C Chiang
Mammary cancer and pyometra are important health hazards associated with ovary conservation in pet dogs. Early ovariohysterectomy may reduce the incidence of these two diseases, but an estimate of the extent to which the development of mammary cancer or pyometra adversely influences overall longevity is missing. As a first step toward addressing this knowledge gap, the results of a historical cohort study of Rottweilers that lived in North America are reported. Questionnaires completed by owners and veterinarians were used to obtain lifetime health and medical information on 242 female Rottweilers, including years of lifetime ovary exposure, age at death, and cause of death...
June 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28695294/the-role-of-mhc-genes-in-contagious-cancer-the-story-of-tasmanian-devils
#9
REVIEW
Alison Caldwell, Hannah V Siddle
The Tasmanian devil, a marsupial species endemic to the island of Tasmania, harbours two contagious cancers, Devil Facial Tumour 1 (DFT1) and Devil Facial Tumour 2 (DFT2). These cancers pass between individuals in the population via the direct transfer of tumour cells, resulting in the growth of large tumours around the face and neck of affected animals. While these cancers are rare, a contagious cancer also exists in dogs and five contagious cancers circulate in bivalves. The ability of tumour cells to emerge and transmit in mammals is surprising as these cells are an allograft and should be rejected due to incompatibility between Major Histocompatibility Complex (MHC) genes...
July 11, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28685347/potential-for-a-novel-manganese-porphyrin-compound-as-adjuvant-canine-lymphoma-therapy
#10
M K Boss, M W Dewhirst, R S Sampaio, A Bennett, A Tovmasyan, K G Berman, A W Beaven, D A Rizzieri, I Batinic-Haberle, M L Hauck, I Spasojevic
PURPOSE: Manganese porphyrins are redox-active drugs and superoxide dismutase mimics, which have been shown to chemosensitize lymphoma, a cancer which frequently occurs in dogs. This study aimed to identify critical information regarding the pharmacokinetics and toxicity of Mn(III) meso-tetrakis (N-n-butoxyetylpyridium-2-yl) porphyrin, (MnTnBuOE-2-PyP(5+), MnBuOE) in dogs as a prelude to a clinical trial in canine lymphoma patients. METHODS: A single-dose pharmacokinetic (PK) study in normal dogs was performed to determine the plasma half-life (t 1/2) of MnBuOE...
July 6, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28683102/identification-of-prognostic-collagen-signatures-and-potential-therapeutic-stromal-targets-in-canine-mammary-gland-carcinoma
#11
Ashley Case, Becky K Brisson, Amy C Durham, Suzanne Rosen, James Monslow, Elizabeth Buza, Pascale Salah, Julie Gillem, Gordon Ruthel, Sridhar Veluvolu, Veronica Kristiansen, Ellen Puré, Dorothy C Brown, Karin U Sørenmo, Susan W Volk
Increasing evidence indicates that the tumor microenvironment plays a critical role in regulating the biologic behavior of breast cancer. In veterinary oncology, there is a need for improved prognostic markers to accurately identify dogs at risk for local and distant (metastatic) recurrence of mammary gland carcinoma and therefore would benefit from adjuvant therapy. Collagen density and fiber organization have been shown to regulate tumor progression in both mouse and human mammary tumors, with certain collagen signatures predicting poor outcomes in women with breast cancer...
2017: PloS One
https://www.readbyqxmd.com/read/28668095/cspg4-a-prototype-oncoantigen-for-translational-immunotherapy-studies
#12
REVIEW
Valeria Rolih, Giuseppina Barutello, Selina Iussich, Raffaella De Maria, Elena Quaglino, Paolo Buracco, Federica Cavallo, Federica Riccardo
Thanks to striking progress in both the understanding of anti-tumor immune response and the characterization of several tumor associated antigens (TAA), a more rational design and more sophisticated strategies for anti-tumor vaccination have been possible. However, the effectiveness of cancer vaccines in clinical trial is still partial, indicating that additional studies are needed to optimize their design and their pre-clinical testing. Indeed, anti-tumor vaccination success relies on the choice of the best TAA to be targeted and on the translational power of the pre-clinical model used to assess its efficacy...
July 1, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28660432/human-microdosing-and-mice-xenograft-data-of-agm-130-applied-to-estimate-efficacious-doses-in-patients
#13
Wan-Su Park, Gab-Jin Park, Seunghoon Han, Sooho Ban, Moon-Young Park, San-Ho Kim, Seon-Myung Kim, Yong-Chul Kim, Hyung Sik Kim, Young G Shin, Dong-Seok Yim
PURPOSE: AGM-130 is a cyclin-dependent kinase inhibitor that exhibits dose-dependent efficacy in xenograft mouse models. During preclinical pharmacokinetic (PK) studies, mice and rats showed comparable PK parameters while dogs showed unusually high clearance (CL), which has made human PK prediction challenging. To address this discrepancy, we performed a human microdosing PK and developed a mouse PK/PD model in order to guide the first-in-human studies. METHODS: A microdose of AGM-130 was given via intravenous injection to healthy subjects...
June 28, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28659807/elucidation-of-arctigenin-pharmacokinetics-and-tissue-distribution-after-intravenous-oral-hypodermic-and-sublingual-administration-in-rats-and-beagle-dogs-integration-of-in-vitro-and-in-vivo-findings
#14
Jie Li, Xin Li, Yu-Shan Ren, Yuan-Yuan Lv, Jun-Sheng Zhang, Xiao-Li Xu, Xian-Zhen Wang, Jing-Chun Yao, Gui-Min Zhang, Zhong Liu
Although arctigenin (AG) has diverse bioactivities, such as anti-oxidant, anti-inflammatory, anti-cancer, immunoregulatory and neuroprotective activities, its pharmacokinetics have not been systematically evaluated. The purpose of this work was to identify the pharmacokinetic properties of AG via various experiments in vivo and in vitro. In this research, rats and beagle dogs were used to investigate the PK (pharmacokinetics, PK) profiles of AG with different drug-delivery manners, including intravenous (i...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28659149/estimating-canine-cancer-incidence-findings-from-a-population-based-tumour-registry-in-northwestern-italy
#15
Elisa Baioni, Eugenio Scanziani, Maria Claudia Vincenti, Mauro Leschiera, Elena Bozzetta, Marzia Pezzolato, Rosanna Desiato, Silvia Bertolini, Cristiana Maurella, Giuseppe Ru
BACKGROUND: Canine cancer registry data can be put to good use in epidemiological studies. Quantitative comparison of tumour types may reveal unusual cancer frequencies, providing directions for research and generation of hypotheses of cancer causation in a specific area, and suggest leads for identifying risk factors. Here we report canine cancer incidence rates calculated from a population-based registry in an area without any known specific environmental hazard. RESULTS: In its 90 months of operation from 2001 to 2008 (the observation period in this study), the population-based Piedmont Canine Cancer Registry collected data on 1175 tumours confirmed by histopathological diagnosis...
June 28, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28655918/the-role-of-set-i2pp2a-in-canine-mammary-tumors
#16
Satoru Kake, Shunya Tsuji, Shuhei Enjoji, Sayaka Hanasaki, Hiroshi Hayase, Ryotaro Yabe, Yuiko Tanaka, Takayuki Nakagawa, Hao-Ping Liu, Shih-Chieh Chang, Tatsuya Usui, Takashi Ohama, Koichi Sato
Canine mammary tumor is the most common neoplasm in female dogs, and it has generated considerable attention as a translational model for human breast cancer. Ser/Thr protein phosphatase 2A (PP2A) plays a critical role as a tumor suppressor, and SET/I2PP2A, the endogenous inhibitory protein of PP2A, binds directly to PP2A and suppresses its phosphatase activity. Here, we investigated the role of SET in the tumorigenic growth in canine mammary tumor as well as in the sensitivity of tumors to existing therapeutics...
June 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28652519/dna-methylation-inhibitor-causes-cell-growth-retardation-and-gene-expression-changes-in-feline-lymphoma-cells
#17
Maika Fujita, Masahiro Kaneda
DNA methylation is an epigenetic mechanism controlling gene expression without affecting DNA sequences, and aberrant DNA methylation patterns are features of a number of diseases. Notably, epigenetic errors in cancer cells have been intensively studied over the last two decades in humans; however, little is known concerning dogs and cats. To analyze DNA methylation and gene expression changes in feline lymphoma cells, we added the DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-aza) to three cell lines (3281 and FT-1 cells derived from T-cell lymphoma and MS4 cells derived from B-cell lymphoma)...
June 24, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28649095/the-detection-of-hepatocellular-carcinoma-hcc-from-patients-breath-using-canine-scent-detection-proof-of-concept-study
#18
Taya Kitiyakara, Susan Redmond, Nattawut Unwanatham, Sasivimol Rattanasiri, Ammarin Thakkinstian, Pongsatorn Tangtawee, Somkit Mingphruedhi, Abhasnee Sobhonslidsuk, Pongphob Intaraprasong, Chomsri Kositchaiwat
Patients with hepatocellular carcinomas (HCC) have poor outcomes as a result of late detection of disease. We investigated the possibility of using smell detection by dogs for detecting HCC from breaths of patients. Patients' whose diagnosis of HCC was confirmed histologically or radiologically according to the American Association for the study of the Liver (AASLD) criteria had breaths collected using facemasks and transported to the study test site. One golden retriever was trained to detect HCC with positive feedback using known samples of HCC and healthy controls in a step-wise manner...
June 26, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28620942/a-dose-escalation-study-of-combretastatin-a4-phosphate-in-healthy-dogs
#19
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
#20
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 nonlinear pharmacokinetic (PK) profiles at high doses partly due to low aqueous solubility...
June 30, 2017: ACS Chemical Neuroscience
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