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Dog aggression

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https://www.readbyqxmd.com/read/28274585/factors-associated-with-canine-resource-guarding-behaviour-in-the-presence-of-dogs-a-cross-sectional-survey-of-dog-owners
#1
Jacquelyn A Jacobs, Jason B Coe, David L Pearl, Tina M Widowski, Lee Niel
Resource guarding (RG) involves the use of specific behaviour patterns to control access to an item of potential "value" (as perceived by the dog), and can be expressed in the presence of various animals, including other dogs. The current study aimed to identify factors associated with RG patterns expressed around other dogs. Dog owners (n=3068) were recruited through social media to answer questions regarding dog- and household-related factors, as well as their dog's current and past behaviour around resources in the presence of other dogs...
February 20, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28268035/factors-associated-with-canine-resource-guarding-behaviour-in-the-presence-of-people-a-cross-sectional-survey-of-dog-owners
#2
Jacquelyn A Jacobs, Jason B Coe, David L Pearl, Tina M Widowski, Lee Niel
Resource guarding (RG) involves the use of specific behaviour patterns to control access to an item of potential "value" to the dog. Of particular concern are patterns involving aggression, due to safety concerns, but other patterns of RG behaviour are prevalent and include avoidance (i.e., positioning of the head or body to maintain item control, or location change with the item) and rapid ingestion (i.e., rapid ingestion of a consumable item). Current research has not investigated the etiology of RG aggression in depth, nor have the additional patterns of resource guarding been considered...
February 17, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28263765/exogenous-testosterone-decreases-men-s-personal-distance-in-a-social-threat-context
#3
Lisa Wagels, Sina Radke, Katharina Sophia Goerlich, Ute Habel, Mikhail Votinov
BACKGROUND: Testosterone can motivate human approach and avoidance behavior. Specifically, the conscious recognition of and implicit reaction to angry facial expressions is influenced by testosterone. The study tested whether exogenous testosterone modulates the personal distance (PD) humans prefer in a social threat context. METHODS: 82 healthy male participants underwent either transdermal testosterone (testosterone group) or placebo application (placebo group)...
March 11, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28253727/gastrointestinal-stromal-tumor-after-tyrosine-kinase-inhibition-therapy-a-review-of-biopsies-of-34-patients-with-clinically-suspected-relapse-and-or-progression-of-the-tumor
#4
L Plank, V BuzalkovA, P SzEpe, Z LasabovA, K JaSek, A StanclovA, G MinArik, J Sufliarsky
Implementation of combined surgical and targeted therapy strategies using tyrosine kinase inhibitors improved the prognosis of patients with aggressive GISTs. The therapeutic answer may be individually different, some patients do not respond properly, or even progress in spite of the therapy. This together with intratumoral heterogeneity and possible development of secondary phenotypical and genetical changes represents a challenge for pathologists examining a biopsy of relapsed tumors and/or their metastases...
March 3, 2017: Neoplasma
https://www.readbyqxmd.com/read/28221318/evaluating-and-treating-mammalian-bites
#5
Donna Rasmussen, Alexandra Landon, Jennifer Powell, Gina R Brown
Mammalian bites, typically from dogs, cats, or humans, are a common presentation in EDs and family practice settings, and patients present with varying degrees of complexity. Injuries can range from local to systemic, including aggressive bacterial infections and permanent limb impairment. Using a systematic approach to initial wound assessment, followed by appropriate diagnostic testing and treatment, is critical to improved long-term patient outcomes.
March 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28197406/long-term-formation-of-aggressive-bony-lesions-in-dogs-with-mid-diaphyseal-fractures-stabilized-with-metallic-plates-incidence-in-a-tertiary-referral-hospital-population
#6
Robert S Gilley, Elizabeth Hiebert, Kemba Clapp, Lara Bartl-Wilson, Michael Nappier, Stephen Werre, Katherine Barnes
The incidence of complications secondary to fracture stabilization, particularly osteolytic lesions and bony tumor formation, has long been difficult to evaluate. The objective of this study was to describe the long-term incidence of aggressive bony changes developing in dogs with long bone diaphyseal fractures stabilized by metallic bone plates compared to a breed-, sex-, and age-matched control group. The medical records of a tertiary referral center were retrospectively reviewed for dogs that matched each respective criterion...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28186653/progression-of-cutaneous-plasmacytoma-to-plasma-cell-leukemia-in-a-dog
#7
Emily D Rout, Alba Maria M Shank, Angharad H K Waite, Andrea Siegel, Anne C Avery, Paul R Avery
A 5-year-old male neutered Bernese Mountain Dog was presented for cutaneous plasmacytoma, which was treated by surgical excision. Four months later, the dog developed multiple skin masses, hyphema, pericardial and mild bicavitary effusions, myocardial masses, and marked plasmacytosis in the peripheral blood. Circulating plasma cells expressed CD34 and MHC class II by flow cytometry. Immunocytochemistry demonstrated that these cells were strongly positive for multiple myeloma oncogene 1/interferon regulatory factor 4 (MUM-1) and weakly to moderately positive for Pax5...
February 10, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28184101/individual-and-group-level-trajectories-of-behavioural-development-in-border-collies
#8
Stefanie Riemer, Corsin Müller, Zsófia Virányi, Ludwig Huber, Friederike Range
In order to assess dogs' personality changes during ontogeny, a cohort of 69 Border collies was followed up from six to 18-24 months. When the dogs were 6, 12, and 18-24 months old, their owners repeatedly filled in a dog personality questionnaire (DPQ), which yielded five personality factors divided into fifteen facets. All five DPQ factors were highly correlated between the three age classes, indicating that the dogs' personality remained consistent relative to other individuals. Nonetheless, at the group level significant changes with age were found for four of the five DPQ factors...
July 2016: Applied Animal Behaviour Science
https://www.readbyqxmd.com/read/28171732/endolymphatic-sac-tumor-in-two-dogs
#9
K J Barnes, V Clear, K Youmans, M R Hardcastle, N Nelson, A Petersen, M Kiupel
Endolymphatic sac tumors (ELSTs) are rare neoplasms of the inner and middle ear described in humans. Diagnosis of such neoplasms is difficult and largely dependent on a combination of histologic, immunohistochemical, and clinical findings. Although the neoplastic cells lack cellular features of malignancy, these are clinically aggressive tumors that often invade the surrounding temporal bone. Here, we describe 2 dogs with middle ear masses that share morphologic, immunohistochemical, and clinical similarities with human ELSTs...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28160303/soft-tissue-sarcoma-in-the-dog-part-2-surgical-margins-controversies-and-a-comparative-review
#10
REVIEW
J P Bray
Soft tissue sarcoma constitutes a heterogeneous group of mesenchymal tumours. Although they are common in the dog, many uncertainties surround the best options for clinical management. Despite recent improvements in outcome, approximately one in five patients may still die as a result of their disease. There is some evidence that wide surgical excision may not be required for every soft tissue sarcoma but, conversely, complacency in treatment may adversely affect outcomes for patients with aggressive disease...
February 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28153506/clinicopathologic-study-of-calcifying-fibrous-tumor-of-the-gastrointestinal-tract-a-case-series
#11
Maryam Kherad Pezhouh, M Katayoon Rezaei, Maryam Shabihkhani, Arunima Ghosh, Deborah Belchis, Elizabeth A Montgomery, Lysandra Voltaggio
Calcifying fibrous tumor (CFT) is a rare benign mesenchymal lesion known to arise at multiple body sites that may clinically mimic other more aggressive lesions in the gastrointestinal (GI) tract. In this study we describe the clinicopathologic findings of 28 GI tract CFTs. Tumors predominantly arose in middle aged adults with a slight female predominance. The most commonly involved sites were small bowel and colon, followed by stomach and appendix. Tumors ranged from 0.3 to 9.3cm (median 1.4cm) and submucosa was the most commonly involved layer...
January 30, 2017: Human Pathology
https://www.readbyqxmd.com/read/28129095/t-lymphocytes-in-histiocytic-sarcomas-of-flat-coated-retriever-dogs
#12
A Marcinowska, F Constantino-Casas, T Williams, T Hoather, B Blacklaws, J Dobson
Flat-Coated Retriever dogs are predisposed to the development of histiocytic sarcoma (HS), a poorly differentiated, highly malignant neoplasm. The authors have previously documented a significant lymphocytic infiltrate in such tumors. The objective of this study was to examine the presence and expression of regulatory T cells in HS tumor samples. Forty tumors were included in this study. All tumors were immunolabeled for CD3, CD79a, CD25, CD45RA, and FOXP3. The proportion of positive cells was compared between tumors presenting as a localized primary soft tissue mass (soft tissue origin HS) and disseminated HS affecting viscera, especially the spleen (splenic origin HS)...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28114335/human-empathy-personality-and-experience-affect-the-emotion-ratings-of-dog-and-human-facial-expressions
#13
Miiamaaria V Kujala, Sanni Somppi, Markus Jokela, Outi Vainio, Lauri Parkkonen
Facial expressions are important for humans in communicating emotions to the conspecifics and enhancing interpersonal understanding. Many muscles producing facial expressions in humans are also found in domestic dogs, but little is known about how humans perceive dog facial expressions, and which psychological factors influence people's perceptions. Here, we asked 34 observers to rate the valence, arousal, and the six basic emotions (happiness, sadness, surprise, disgust, fear, and anger/aggressiveness) from images of human and dog faces with Pleasant, Neutral and Threatening expressions...
2017: PloS One
https://www.readbyqxmd.com/read/28101368/polymorphisms-in-the-canine-monoamine-oxidase-a-maoa-gene-identification-and-variation-among-five-broad-dog-breed-groups
#14
James Sacco, Andrew Ruplin, Paul Skonieczny, Michael Ohman
BACKGROUND: In humans, reduced activity of the enzyme monoamine oxidase type A (MAOA) due to genetic polymorphisms within the MAOA gene leads to increased brain neurotransmitter levels associated with aggression. In order to study MAOA genetic diversity in dogs, we designed a preliminary study whose objectives were to identify novel alleles in functionally important regions of the canine MAOA gene, and to investigate whether the frequencies of these polymorphisms varied between five broad breed groups (ancient, herding, mastiff, modern European, and mountain)...
2017: Canine Genetics and Epidemiology
https://www.readbyqxmd.com/read/28058543/genomic-profiling-of-canine-mast-cell-tumors-identifies-dna-copy-number-aberrations-associated-with-kit-mutations-and-high-histological-grade
#15
Hiroyuki Mochizuki, Rachael Thomas, Scott Moroff, Matthew Breen
Mast cell tumor (MCT) is the most common skin malignancy of domestic dogs and presents with a widely variable clinical behavior. Although activating KIT mutations are present in approximately 20% of canine MCTs, molecular etiology is largely unknown for the majority of this cancer. Characterization of genomic alterations in canine MCTs may identify genomic regions and/or genes responsible for their development and progression, facilitating the discovery of new therapeutic targets and improved clinical management of this heterogeneous cancer...
January 5, 2017: Chromosome Research
https://www.readbyqxmd.com/read/28025851/long-term-effects-of-gnrh-agonists-on-fertility-and-behaviour
#16
S Goericke-Pesch
This review aimed to summarize the present knowledge about the effects of GnRH agonist slow-release implants (GnRH A-SRI) on fertility and behaviour in male and female dogs and cats with special focus on deslorelin. Following an initial stimulation of gonadotropin and testosterone secretion possibly associated with an improved semen quality, GnRH A-SRI induce long-term depression of fertility in male dogs and cats with, however, a large individual variation in onset and duration of efficacy especially in cats...
December 27, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28024876/neuronal-ceroid-lipofuscinosis-ncl-is-caused-by-the-entire-deletion-of-cln8-in-the-alpenl%C3%A3-ndische-dachsbracke-dog
#17
M Hirz, M Drögemüller, A Schänzer, V Jagannathan, E Dietschi, H H Goebel, W Hecht, S Laubner, M J Schmidt, F Steffen, M Hilbe, K Köhler, C Drögemüller, C Herden
Neuronal ceroid lipofuscinoses (NCLs) are inherited lysosomal storage diseases that have been described in a variety of dog breeds, where they are caused by different mutations in different genes. However, the causative gene defect in the breed Alpenländische Dachsbracke remained unknown so far. Here we present two confirmed cases of NCL in Alpenländische Dachsbracke dogs from different litters of the same sire with a different dam harboring the same underlying novel mutation in the CLN8 gene. Case 1, a 2-year-old male Alpenländische Dachsbracke was presented with neurological signs including disorientation, character changes including anxiety states and aggressiveness, sudden blindness and reduction of food intake...
March 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28009676/effectiveness-of-meaningful-occupation-interventions-for-people-living-with-dementia-in-residential-aged-care-a-systematic-review
#18
Catherine Travers, Deborah Brooks, Sonia Hines, Maria O'Reilly, Mitchell McMaster, Wei He, Margaret MacAndrew, Elaine Fielding, Lina Karlsson, Elizabeth Beattie
BACKGROUND: The ability to participate in valued activities, whether for work, leisure or family, is an important aspect of personal identity. In dementia, progressive memory loss means that abilities developed over a lifetime begin to be lost as well, contributing to the loss of self and identity. Some studies have reported that activities or interventions tailored to be meaningful to the person with dementia (defined as any activity important to the individual) are more effective in addressing behavioral and psychological symptoms of dementia (BPSD) and improving quality of life (QoL) than those that are not so tailored...
December 2016: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/27931927/owned-dog-ecology-and-demography-in-villa-de-tezontepec-hidalgo-mexico
#19
Luz Maria Kisiel, Andria Jones-Bitton, Jan M Sargeant, Jason B Coe, D T Tyler Flockhart, Alejandro Reynoso Palomar, Erick J Canales Vargas, Amy L Greer
Dog overpopulation in developing countries has negative implications for the health and safety of people, including the transmission of zoonotic diseases, physical attacks and intimidation to humans and animals, as well as impacts on canine welfare. Understanding the ecology and demographic characteristics of a dog population can help in the planning and monitoring of canine population control programs. Little data exist regarding demography and dynamics of domestic dog populations in semi-urban areas in Mexico...
December 1, 2016: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/27918123/chrysomya-bezziana-diptera-calliphoridae-infestation-case-report-of-three-dogs-in-malaysia-treated-with-spinosad-milbemycin
#20
Hock Siew Han, Reuben Sharma, John Jeffery, Chiara Noli
BACKGROUND: Infestation of wounds with the larvae of Callophorid flies is relatively common in countries where these parasites are found. The most common species associated with infections in Southeast Asia is Chrysomya bezziana (Ch. bezziana), the Old World screw worm. Treatment consists of either subcutaneous injection of ivermectin or oral administration of nitenpyram combined with aggressive tissue debridement under general anaesthesia. OBJECTIVES: To describe the treatment of cutaneous myiasis in three dogs caused by the larvae of Ch...
December 5, 2016: Veterinary Dermatology
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