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Boyd NL, von Pfeil D, James DR, Kent M, Fearnside S, White JD. Rupture of the gastrocnemius muscle at its distal musculotendinous junction: conservative treatment and outcomes in 11 dogs. N Z Vet J 2023; 71:275-281. [PMID: 37309587 DOI: 10.1080/00480169.2023.2224753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 05/28/2023] [Indexed: 06/14/2023]
Abstract
CASE HISTORY Medical records from three veterinary referral centres and a university veterinary teaching hospital in Australia and the USA were reviewed to identify dogs with a diagnosis of distal gastrocnemius musculotendinous junction rupture (DGMJR) that were treated without surgery between 2007 and 2020. CLINICAL AND IMAGING FINDINGS All dogs (n = 11) presented with unilateral, pelvic limb lameness and bruising, swelling or pain on palpation at the distal musculotendinous junction. The diagnosis was confirmed with ultrasound or MRI in six dogs; radiographs were used to excluded stifle and tarsus pathology in four dogs; and five dogs were diagnosed on physical examination findings. TREATMENT AND OUTCOME All dogs were managed conservatively, either with complete confinement alone (n = 10; median 9 weeks), external coaptation alone (n = 1), or a combination of both (n = 4). Sporting dogs (n = 7) were completely confined (median 22 weeks) for longer periods than companion dogs (n = 3; median 5 weeks).A good to excellent outcome was achieved for all cases in this cohort. The seven sporting dogs achieved an excellent outcome; returning to their previous level of sport, with complete resolution of lameness and recovery of a normal tibiotarsal stance. The four companion dogs achieved a good outcome; returning to their previous level of activity but with persistently increased tibiotarsal standing angle compared to the contralateral limb. CLINICAL RELEVANCE Conservative treatment represents a viable treatment option for dogs with a rupture of the gastrocnemius muscle at its distal musculotendinous junction.
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Affiliation(s)
- N L Boyd
- Sports Medicine and Rehabilitation, Small Animal Specialist Hospital, Sydney, Australia
| | - D von Pfeil
- Small Animal Surgery, Bessy's Kleintierklinik, Zurich, Switzerland
- Small Animal Surgery Locum, PLLC, Dallas, TX, USA
| | - D R James
- Small Animal Surgery, Small Animal Specialist Hospital, Sydney, Australia
| | - M Kent
- Neurology Service, Small Animal Medicine & Surgery, Veterinary Teaching Hospital, University of Georgia, Athens, GA, USA
| | - S Fearnside
- Small Animal Surgery, Small Animal Specialist Hospital, Sydney, Australia
| | - J D White
- Small Animal Internal Medicine, Small Animal Specialist Hospital, Sydney, Australia
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S, Popescu MI, Cozma A, Babes EE, Rus M, Ardelean A, Larisa R, Moisi M, Ban E, Buzle A, Filimon G, Dobreanu D, Lupu S, Mitre A, Rudzik R, Sus I, Opris D, Somkereki C, Mornos C, Petrescu L, Betiu A, Volcescu A, Ioan O, Luca C, Maximov D, Mosteoru S, Pascalau L, Roman C, Brie D, Crisan S, Erimescu C, Falnita L, Gaita D, Gheorghiu M, Levashov S, Redkina M, Novitskii N, Dementiev E, Baglikov A, Zateyshchikov D, Zubova E, Rogozhina A, Salikov A, Nikitin I, Reznik EV, Komissarova MS, Shebzukhova M, Shitaya K, Stolbova S, Larina V, Akhmatova F, Chuvarayan G, Arefyev MN, Averkov OV, Volkova AL, Sepkhanyan MS, Vecherko VI, Meray I, Babaeva L, Goreva L, Pisaryuk A, Potapov P, Teterina M, Ageev F, Silvestrova G, Fedulaev Y, Pinchuk T, Staroverov I, Kalimullin D, Sukhinina T, Zhukova N, Ryabov V, Kruchinkina E, Vorobeva D, Shevchenko I, Budyak V, Elistratova O, Fetisova E, Islamov R, Ponomareva E, Khalaf H, Shaimaa AA, Kamal W, Alrahimi J, Elshiekh A, Balghith M, Ahmed A, Attia N, Jamiel AA, Potpara T, Marinkovic M, Mihajlovic M, Mujovic N, Kocijancic A, Mijatovic Z, Radovanovic M, Matic D, Milosevic A, Savic L, Subotic I, Uscumlic A, Zlatic N, Antonijevic J, Vesic O, Vucic R, Martinovic SS, Kostic T, Atanaskovic V, Mitic V, Stanojevic D, Petrovic M. Cohort profile: the ESC EURObservational Research Programme Non-ST-segment elevation myocardial infraction (NSTEMI) Registry. Eur Heart J Qual Care Clin Outcomes 2022; 9:8-15. [PMID: 36259751 DOI: 10.1093/ehjqcco/qcac067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/12/2022]
Abstract
AIMS The European Society of Cardiology (ESC) EURObservational Research Programme (EORP) Non-ST-segment elevation myocardial infarction (NSTEMI) Registry aims to identify international patterns in NSTEMI management in clinical practice and outcomes against the 2015 ESC Guidelines for the management of acute coronary syndromes in patients presenting without ST-segment-elevation. METHODS AND RESULTS Consecutively hospitalised adult NSTEMI patients (n = 3620) were enrolled between 11 March 2019 and 6 March 2021, and individual patient data prospectively collected at 287 centres in 59 participating countries during a two-week enrolment period per centre. The registry collected data relating to baseline characteristics, major outcomes (in-hospital death, acute heart failure, cardiogenic shock, bleeding, stroke/transient ischaemic attack, and 30-day mortality) and guideline-recommended NSTEMI care interventions: electrocardiogram pre- or in-hospital, pre-hospitalization receipt of aspirin, echocardiography, coronary angiography, referral to cardiac rehabilitation, smoking cessation advice, dietary advice, and prescription on discharge of aspirin, P2Y12 inhibition, angiotensin converting enzyme inhibitor (ACEi)/angiotensin receptor blocker (ARB), beta-blocker, and statin. CONCLUSION The EORP NSTEMI Registry is an international, prospective registry of care and outcomes of patients treated for NSTEMI, which will provide unique insights into the contemporary management of hospitalised NSTEMI patients, compliance with ESC 2015 NSTEMI Guidelines, and identify potential barriers to optimal management of this common clinical presentation associated with significant morbidity and mortality.
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Affiliation(s)
- Ramesh Nadarajah
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, LS2 9JT Leeds, UK.,Leeds Institute of Data Analytics, University of Leeds, LS2 9JT Leeds, UK.,Department of Cardiology, Leeds Teaching Hospitals NHS Trust, LS1 3EX Leeds, UK
| | - Peter Ludman
- Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
| | - Yolande Appelman
- Department of Cardiology, Amsterdam UMC-Vrije Universiteit, Amsterdam Cardiovascular Sciences, Amsterdam, Netherlands
| | - Salvatore Brugaletta
- Hospital Clinic de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Andrzej Budaj
- Department of Cardiology, Center of Postgraduate Medical Education, Grochowski Hospital, Warsaw, Poland
| | - Hector Bueno
- Cardiology Department, Hospital Universitario 12 de Octubre and Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.,Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.,Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Kurt Huber
- 3rd Medical Department, Cardiology and Intensive Care Medicine, Clinic Ottakring (Wilhelminenhospital), Vienna, Austria.,Medical Faculty, Sigmund Freud University, Vienna, Austria
| | - Vijay Kunadian
- Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.,Cardiothoracic Centre, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Sergio Leonardi
- University of Pavia, Pavia, Italy.,Fondazione IRCCS Policlinico S.Matteo, Pavia, Italy
| | - Maddalena Lettino
- Cardio-Thoracic and Vascular Department, San Gerardo Hospital, ASST-Monza, Monza, Italy
| | - Dejan Milasinovic
- Department of Cardiology, University Clinical Center of Serbia and Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Chris P Gale
- Leeds Institute for Cardiovascular and Metabolic Medicine, University of Leeds, LS2 9JT Leeds, UK.,Leeds Institute of Data Analytics, University of Leeds, LS2 9JT Leeds, UK.,Department of Cardiology, Leeds Teaching Hospitals NHS Trust, LS1 3EX Leeds, UK
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Lee J, Meyer C, To T, Lin CW, Wang S, Kent M, Johnson A, Lee J. 946P Non-examination of lymph nodes (LN) in early-stage non-small cell lung cancer (eNSCLC) is associated with wedge resections and underutilization of adjuvant (adv) chemotherapy. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Grimley M, Kent M, Asnani M, Shrestha A, Felker S, Lutzko C, Arumugam P, Witting S, Knight-Madden J, Niss O, Quinn C, Lo C, Little C, Dong A, Malik P. P1453: STABLE TRANSDUCTION OF FETAL HEMOGLOBIN IN PATIENTS WITH SICKLE CELL DISEASE IN THE PHASE 1/2 MOMENTUM STUDY OF ARU-1801 GENE THERAPY AND REDUCED INTENSITY CONDITIONING. Hemasphere 2022. [PMCID: PMC9429142 DOI: 10.1097/01.hs9.0000848668.22824.43] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Kent M, Vasconcelos L, Ansari S, Ghanbari H, Nenadic I. Transfer learning application of a novel frequency shift convolutional neural network method for atrial fibrillation classification. Europace 2022. [DOI: 10.1093/europace/euac053.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
There has been a proliferation of machine learning (ML) electrocardiogram (ECG) classification algorithms reaching >85% accuracy for various cardiac pathologies. Despite the high accuracy at individual institutions, challenges remain with cross-institutional algorithm evaluation. Transfer learning (TL) is a technique in which a model trained for a specific task is repurposed for another related task, in this case ECG ML model trained at one institution used to classify ECGs at another institution. Models trained at one institution, however, might not be generalizable for accurate classification when deployed broadly due to differences in type, time, and sampling rate of traditional ECG acquisition. TL would thus require additional ECG signal processing which inherently introduces noise and has high computational costs. Our previous work has shown that frequency domain (FD) convolutional neural networks (CNN) outperform traditional time domain (TD) CNN methods in detecting atrial fibrillation (Afib) and are more robust against noise and sampling variations.
Purpose
In this study, we explore ECG transfer learning by comparing performance of TD and FD CNN ECG classification models. Examine the hypothesis that FD signal analysis can overcome limitations inherent to TD and demonstrate application for Afib classification in three different publicly available datasets.
Methods
PTB-XL ECG dataset was used to train TD and FD CNN models for Afib classification. TL on the two data sets, Lobachevsky University Electrocardiography Database (LUDB) and KURIAS-ECG database (KURIAS), was performed with portions of each dataset added to PTB-XL training data before test runs on the remaining ECGs. The models were also tested directly on the two datasets (cross-testing) for comparison.
Results
Results of TL are summarized in Fig. 1. Panels (a) and (b) show TD and FD performance on PTB-XL dataset, with FD outperforming TD. Panels (c) and (d) show TL of PTB-XL trained TD and FD models applied on LUDB Afib data with FD outperforming TD. Panels (e) and (f) show TL of PTB-XL trained models applied to KURIAS Afib ECGs, with FD again outperforming TD. Table 1 summarizes results of TL and direct cross-testing with TL outperforming cross-testing.
Conclusions
FD models were superior to TD models in Afib classification, both in cross-testing and TL. TL technique, in which a pre-trained model is used as starting point for novel dataset training, outperformed direct cross-testing. TL with FD CNN has the capacity to leverage models trained on a particular set of ECGs to classify ECGs with varying signal acquisition properties. FD CNN may be robust to inter-institutional variability and has potential for widespread application with no compromise to ECG classification power. A potential application of these findings is deployment of ECG classification CNN models trained at institutions with large ECG databases to hospitals with smaller datasets.
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Affiliation(s)
- M Kent
- University of Michigan, Internal Medicine, Ann Arbor, United States of America
| | - L Vasconcelos
- University of Minnesota, Bioinformatics and Computational Biology, Rochester, United States of America
| | - S Ansari
- University of Michigan, Department of Emergency Medicine, Ann Arbor, United States of America
| | - H Ghanbari
- University of Michigan, Cardiovascular Disease, Department of Internal Medicine, Ann Arbor, United States of America
| | - I Nenadic
- University of Michigan, Internal Medicine, Ann Arbor, United States of America
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Lee J, Wang R, Johnson A, Ogale S, Kent M, Lee J. 1158P Real-world adjuvant treatment patterns and survival outcomes among early NSCLC US patients. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Hecht EE, Zapata I, Alvarez CE, Gutman DA, Preuss TM, Kent M, Serpell JA. Neurodevelopmental scaling is a major driver of brain-behavior differences in temperament across dog breeds. Brain Struct Funct 2021; 226:2725-2739. [PMID: 34455497 DOI: 10.1007/s00429-021-02368-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/23/2021] [Indexed: 11/24/2022]
Abstract
Behavioral traits like aggression, anxiety, and trainability differ significantly across dog breeds and are highly heritable. However, the neural bases of these differences are unknown. Here we analyzed structural MRI scans of 62 dogs in relation to breed-average scores for the 14 major dimensions in the Canine Behavioral Assessment and Research Questionnaire, a well-validated measure of canine temperament. Several behavior categories showed significant relationships with morphologically covarying gray matter networks and regional volume changes. Networks involved in social processing and the flight-or-fight response were associated with stranger-directed fear and aggression, putatively the main behaviors under selection pressure during wolf-to-dog domestication. Trainability was significantly associated with expansion in broad regions of cortex, while fear, aggression, and other "problem" behaviors were associated with expansion in distributed subcortical regions. These results closely overlapped with regional volume changes with total brain size, in striking correspondence with models of developmental constraint on brain evolution. This suggests that the established link between dog body size and behavior is due at least in part to disproportionate enlargement of later-developing regions in larger brained dogs. We discuss how this may explain the known correlation of increasing reactivity with decreasing body size in dogs.
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Affiliation(s)
- E E Hecht
- Department of Human Evolutionary Biology, Harvard University, 11 Divinity Ave., Cambridge, MA, 02138, USA.
| | - I Zapata
- Department of Biomedical Sciences, Rocky Vista University, Parker, CO, 80134, USA
| | - C E Alvarez
- Center for Clinical and Translational Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, 43205, USA.,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, 43210, USA.,Department of Veterinary Clinical Sciences, The Ohio State University College of Veterinary Medicine, Columbus, OH, 43210, USA
| | - D A Gutman
- Department of Neurology, School of Medicine, Emory University, Atlanta, GA, 30029, USA
| | - T M Preuss
- Yerkes National Primate Research Center, Emory University, Atlanta, GA, 30029, USA
| | - M Kent
- College of Veterinary Medicine, University of Georgia at Athens, Athens, GA, 30602, USA
| | - J A Serpell
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
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Tomer N, Razdan S, Kent M, Valenzuela R. 163 Evaluation of Safety and Outcomes in Rezum® with an Inflatable Penile Prosthesis. J Sex Med 2021. [DOI: 10.1016/j.jsxm.2021.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Drakaki A, Luhn P, Wakelee H, Dhillon P, Kent M, Shim J, Degaonkar V, Hoang T, McNally V, Chui S, Gutzmer R. Association of systemic corticosteroids with overall survival in patients receiving cancer immunotherapy for advanced melanoma, non-small cell lung cancer or urothelial cancer in routine clinical practice. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz449.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kent M, Scott S, Lambert S, Kirk E, Terhune-Cotter B, Thompson B, Neal S, Dozier B, Bardi M, Lambert K. Contingency Training Alters Neurobiological Components of Emotional Resilience in Male and Female Rats. Neuroscience 2018; 386:121-136. [PMID: 29928950 PMCID: PMC8112904 DOI: 10.1016/j.neuroscience.2018.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 02/07/2023]
Abstract
Prior research with a rat model of behavioral therapy [i.e., effort-based reward (EBR) contingency training] suggests that strengthened associations between physical effort and desired outcomes enhance neurobiological indices of resilience. In the current study, male and female Long-Evans rats were exposed to either six weeks of EBR training or noncontingent training prior to 10 days of exposure to chronic unpredictable stress (CUS). Subsequently, all animals were exposed to a problem-solving task and then trained in a spatial learning/foraging task, the Dry Land Maze (DLM). Following habituation training and test trials, rats were assessed in a probe trial that generated a prediction error (cognitive uncertainty). Results indicated that, during CUS exposure, contingency-training enhanced dehydroepiandrosterone/corticosterone ratios (consistent with healthier stress responses), especially in male rats. Additionally, contingency training increased exploratory behaviors in the probe trial as well as differentially influenced on-task problem-solving performance in males and females. Following the probe trial, brains were exposed to histological analyses to determine the effects of sex and contingency training on various neurobiological markers. Contingency training decreased BDNF-immunoreactivity (ir) in the hippocampus CA1 and lateral habenula, implicating differential neuroplasticity responses in the training groups. Further, coordinated fos-ir activation in areas associated with emotional resilience (i.e., motivation-regulation) was observed in contingent-trained animals. In sum, the current findings confirm that behavioral training is associated with neurobiological markers of emotional resilience; however, further assessments are necessary to more accurately determine the therapeutic potential for the EBR contingency training model.
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Affiliation(s)
- M Kent
- Department of Psychology, Neuroscience Concentration, University of Richmond, Richmond, VA 23173, United States
| | - S Scott
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - S Lambert
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - E Kirk
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - B Terhune-Cotter
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - B Thompson
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - S Neal
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - B Dozier
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - M Bardi
- Department of Psychology and Behavioral Neuroscience, Randolph-Macon College, Ashland, VA 23005, United States
| | - K Lambert
- Department of Psychology, Neuroscience Concentration, University of Richmond, Richmond, VA 23173, United States.
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Hicks J, Stewart G, Kent M, Platt S. Delayed asymptomatic progressive intraventricular pneumocephalus in a dog following craniotomy. J Small Anim Pract 2018; 61:316-320. [PMID: 29736904 DOI: 10.1111/jsap.12858] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 10/01/2017] [Accepted: 11/16/2017] [Indexed: 11/29/2022]
Abstract
Delayed pneumocephalus developed in a 9-year-old dog following transfrontal craniotomy and implantation of an experimental local chemotherapy into a partially resected oligodendroglioma, but the animal appeared to be asymptomatic. MRI evidence of increasing intracranial pressure, including progressive ventricular dilatation and compression of periventricular parenchyma, led to the recommendation for exploratory craniotomy. The barrier between the intracranial cavity and frontal sinus was enhanced, and pneumocephalus resolved on MRI at both 1 and 3 months following the repair.
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Affiliation(s)
- J Hicks
- Small Animal Veterinary Teaching Hospital, University of Georgia College of Veterinary Medicine, Athens, GA, 30602, USA
| | - G Stewart
- Small Animal Veterinary Teaching Hospital, University of Georgia College of Veterinary Medicine, Athens, GA, 30602, USA
| | - M Kent
- Small Animal Veterinary Teaching Hospital, University of Georgia College of Veterinary Medicine, Athens, GA, 30602, USA
| | - S Platt
- Small Animal Veterinary Teaching Hospital, University of Georgia College of Veterinary Medicine, Athens, GA, 30602, USA
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Dewey CW, Ringwood PB, Pettigrew RW, Kent M, Budsberg SC, Loughin CA. Effect of durotomy on functional outcome of dogs with type I thoracolumbar disc extrusion and absent deep pain perception. Vet Comp Orthop Traumatol 2018. [DOI: 10.1055/s-0038-1632953] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummarySpinal cord durotomy is performed as a diagnostic aid in determining spinal cord structural integrity, and this may be useful as an indicator of prognosis in cases with loss of deep pain perception (DPP). It has been suggested that a durotomy may relieve intramedullary compression but there is some debate about the therapeutic value. The purpose of this study was to compare ambulatory outcome of dogs that had loss of DPP treated with hemilaminectomy with durotomy versus hemilaminectomy without durotomy. Medical records of 81 dogs diagnosed with type I thoracolumbar IVD were reviewed. Dogs were included in the study if DPP was absent upon initial neurological examination and surgical decompression via hemilaminectomy was performed. Of the 81 cases, 48 were included in this study. The number of dogs that recovered ambulatory function were compared between durotomy and nondurotomy groups with a chi-squared test (p<0.05). No differences were found. The findings of this study suggest that durotomy is useful as a diagnostic modality and that performing a durotomy does not significantly affect post-operative recovery of voluntary motor function.
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Rangachari D, Vanderlaan P, Le X, Majid A, Parikh M, Gangadharan S, Kent M, Huberman M, Kobayashi S, Costa D. P3.03-025 Tumor Biomarkers for the Routine Care of Advanced Non-Small-Cell Lung Cancer: A Decade of Experience in Implementing Predictive Genomic Events. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Kent M, Glass EN, Miller AD, de Lahunta A. Neuroendodermal cyst in the fourth ventricle of a dog. Aust Vet J 2017; 95:294-298. [PMID: 28749028 DOI: 10.1111/avj.12613] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 10/24/2016] [Accepted: 11/29/2016] [Indexed: 01/28/2023]
Abstract
CASE REPORT We describe the MRI appearance and surgical outcome of a rare neuroendodermal cyst in the fourth ventricle of a German Shorthaired Pointer. The dog presented with uncoordinated gait and occasional falling that increased when she became excited. The MRI appearance is shown and the surgical treatment described. Recurrence occurred on two occasions and the dog was euthanased. CONCLUSION Recurrence of these cysts is highly likely unless there is complete surgical resection.
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Affiliation(s)
- M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, 2200 College Station Road, Athens, GA 30605, USA
| | - E N Glass
- Section of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA
| | - A D Miller
- Section of Anatomic Pathology, Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - A de Lahunta
- Section of Anatomic Pathology, Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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15
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Song RB, Kent M, Glass EN, Davis GJ, Castro FA, de Lahunta A. Hemifacial Microsomia in a Cat. Anat Histol Embryol 2017; 46:497-501. [PMID: 28718994 DOI: 10.1111/ahe.12285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 06/12/2017] [Indexed: 11/27/2022]
Abstract
A 7-month-old domestic medium hair cat presented with facial asymmetry affecting the bony and soft tissue structures of the right side of the head including the maxilla, nose, eye and pinna of the ear. Additionally, neurological dysfunction of the facial and vestibulocochlear nerves on the affected side was present. A congenital malformation affecting the first and second embryologic pharyngeal arches was suspected. This is the first case of hemifacial microsomia of likely congenital origin reported in a cat.
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Affiliation(s)
- R B Song
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - E N Glass
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - G J Davis
- Department of Surgery, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - F A Castro
- Department of Radiology, Red Bank Veterinary Hospital, Compassion First Pet Hospitals, Tinton Falls, NJ, USA
| | - A de Lahunta
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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16
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Cossic B, Silver G, Kent M, Glass EN, Agnew D, McDonough S, Miller AD. Surgical removal of a choroid plexus oncocytoma in an adult cat. J Small Anim Pract 2017; 58:589-592. [PMID: 28379624 DOI: 10.1111/jsap.12672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 11/05/2016] [Indexed: 12/01/2022]
Abstract
An 11-year-old male castrated domestic shorthair cat presented with left central vestibular dysfunction. Magnetic resonance imaging of the brain revealed a large, extra-parenchymal, strongly contrast-enhancing mass at the level of the left cerebellopontine angle and compressing the cerebellum and brainstem. The mass was surgically excised via left rostral and sub-tentorial craniectomies and histopathology revealed an epithelial neoplasm composed of anastomosing cords of neoplastic cells that contained large amounts of finely granular hypereosinophilic cytoplasm and round nuclei. The cytoplasmic granules were variably positive with periodic acid-Schiff and modified Gomori trichrome. Immunohistochemical staining with anti-cytokeratin AE1/AE3 was diffusely positive. Electron microscopy revealed neoplastic cells that were full of electron-dense organelles consistent with mitochondria. This is the first case of a choroid plexus oncocytoma in the central nervous system of any domestic animal species and highlights the role of successful surgical intervention in extra-parenchymal neoplasia in the central nervous system.
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Affiliation(s)
- B Cossic
- Section of Anatomic Pathology, Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
| | - G Silver
- Massachusetts Veterinary Referral Hospital, Woburn, Massachusetts 01801, USA
| | - M Kent
- Section of Small Animal Medicine and Surgery, University of Georgia College of Veterinary Medicine, Athens, Georgia 30602, USA
| | - E N Glass
- Red Bank Veterinary Hospital, Tinton Falls, New Jersey 07724, USA
| | - D Agnew
- Diagnostic Center for Population and Animal Health, Michigan State University, Lansing, Michigan 48824, USA
| | - S McDonough
- Section of Anatomic Pathology, Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
| | - A D Miller
- Section of Anatomic Pathology, Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA
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Grattan JP, Adams RB, Friedman H, Gilbertson DD, Haylock KI, Hunt CO, Kent M. The first polluted river? Repeated copper contamination of fluvial sediments associated with Late Neolithic human activity in southern Jordan. Sci Total Environ 2016; 573:247-257. [PMID: 27565533 DOI: 10.1016/j.scitotenv.2016.08.106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/15/2016] [Accepted: 08/15/2016] [Indexed: 06/06/2023]
Abstract
The roots of pyrometallurgy are obscure. This paper explores one possible precursor, in the Faynan Orefield in southern Jordan. There, at approximately 7000cal. BP, banks of a near-perennial meandering stream (today represented by complex overbank wetland and anthropogenic deposits) were contaminated repeatedly by copper emitted by human activities. Variations in the distribution of copper in this sequence are not readily explained in other ways, although the precise mechanism of contamination remains unclear. The degree of copper enhancement was up to an order of magnitude greater than that measured in Pleistocene fluvial and paludal sediments, in contemporary or slightly older Holocene stream and pond deposits, and in the adjacent modern wadi braidplain. Lead is less enhanced, more variable, and appears to have been less influenced by contemporaneous human activities at this location. Pyrometallurgy in this region may have appeared as a byproduct of the activity practised on the stream-bank in the Wadi Faynan ~7000years ago.
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Affiliation(s)
- J P Grattan
- Department of Geography and Earth Sciences, University of Aberystwyth, Aberystwyth SY23 3DB, Wales, UK.
| | - R B Adams
- Department of Anthropology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - H Friedman
- Department of Classical Languages and Literature, Texas Technical University, Lubbock, TX 79409-2071, USA.
| | - D D Gilbertson
- School of Geography, Earth and Environmental Sciences, University of Plymouth. Drake Circus, Plymouth PL4 8AA, UK and Department of Archaeology, Anthropology and Forensic Science, Bournemouth University, Dorset BH12 5BB, UK.
| | - K I Haylock
- Department of Geography and Earth Sciences, University of Aberystwyth, Aberystwyth SY23 3DB, Wales, UK.
| | - C O Hunt
- School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK.
| | - M Kent
- School of Geography, Earth and Environmental Sciences, University of Plymouth. Drake Circus, Plymouth PL4 8AA, UK and Department of Archaeology, Anthropology and Forensic Science, Bournemouth University, Dorset BH12 5BB, UK.
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18
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Nguyen DP, Kent M, Vilaseca A, Corradi RB, Fossati N, Sjoberg DD, Benfante N, Eastham JA, Scardino PT, Touijer KA. Updated postoperative nomogram incorporating the number of positive lymph nodes to predict disease recurrence following radical prostatectomy. Prostate Cancer Prostatic Dis 2016; 20:105-109. [DOI: 10.1038/pcan.2016.60] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/02/2016] [Accepted: 09/20/2016] [Indexed: 12/26/2022]
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Kent M, Glass EN, Haley AC, Shaikh LS, Sequel M, Blas-Machado U, Bishop TM, Holmes SP, Platt SR. Hydrocephalus secondary to obstruction of the lateral apertures in two dogs. Aust Vet J 2016; 94:415-422. [PMID: 27785804 DOI: 10.1111/avj.12510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Revised: 01/24/2016] [Accepted: 01/27/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND Traditionally, hydrocephalus is divided into communicating or non-communicating (obstructive) based on the identification of a blockage of cerebrospinal fluid (CSF) flow through the ventricular system. Hydrocephalus ex vacuo refers to ventricular enlargement as a consequence of neuroparenchymal loss. Hydrocephalus related to obstruction of the lateral apertures of the fourth ventricles has rarely been described. CASE REPORT The clinicopathologic findings in two dogs with hydrocephalus secondary to obstruction of the lateral apertures of the fourth ventricle are reported. Signs were associated with a caudal cervical spinal cord lesion in one dog and a caudal brain stem lesion in the other dog. Magnetic resonance imaging (MRI) disclosed dilation of the ventricular system, including the lateral recesses of the fourth ventricle. In one dog, postmortem ventriculography confirmed obstruction of the lateral apertures. Microscopic changes were identified in the choroid plexus in both dogs, yet a definitive cause of the obstructions was not identified. The MRI findings in both dogs are similar to membranous occlusion of the lateral and median apertures in human patients. CONCLUSION MRI detection of dilation of the entire ventricular system in the absence of an identifiable cause should prompt consideration of an obstruction of the lateral apertures. In future cases, therapeutic interventions aimed at re-establishing CSF flow or ventriculoperitoneal catheterisation should be considered.
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Affiliation(s)
- M Kent
- University of Georgia, Department of Small Animal Medicine and Surgery, Athens, Georgia, USA.
| | - E N Glass
- Red Bank Veterinary Hospital, Tinton Falls, New Jersey, USA
| | - A C Haley
- University of Georgia, Department of Small Animal Medicine and Surgery, Athens, Georgia, USA
| | - L S Shaikh
- University of Georgia, Veterinary Biosciences and Diagnostic imaging, Athens, GA, USA
| | - M Sequel
- University of Georgia, Department of Pathology, Athens, GA, USA
| | - U Blas-Machado
- Athens Veterinary Diagnostic Laboratory, University of Georgia, Athens, GA, USA
| | - T M Bishop
- Upstate Veterinary Specialists, Latham, New York, USA
| | - S P Holmes
- University of Georgia, Veterinary Biosciences and Diagnostic imaging, Athens, GA, USA
| | - S R Platt
- University of Georgia, Department of Small Animal Medicine and Surgery, Athens, Georgia, USA
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20
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Kent M, Ruygrok P, Sidhu K, Stewart J, Nair A, Ellis C, Webster M. Time to Reperfusion in Patients with ST Elevation Myocardial Infarction Presenting via Different and Distinct Logistic Pathways. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Olby NJ, Muguet-Chanoit AC, Lim JH, Davidian M, Mariani CL, Freeman AC, Platt SR, Humphrey J, Kent M, Giovanella C, Longshore R, Early PJ, Muñana KR. A Placebo-Controlled, Prospective, Randomized Clinical Trial of Polyethylene Glycol and Methylprednisolone Sodium Succinate in Dogs with Intervertebral Disk Herniation. J Vet Intern Med 2016; 30:206-14. [PMID: 26520829 PMCID: PMC4913663 DOI: 10.1111/jvim.13657] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/28/2015] [Accepted: 10/05/2015] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Acute intervertebral disk herniation (IVDH) is a common cause of spinal cord injury in dogs and currently there is no proven medical treatment to counter secondary injury effects. Use of methylprednisolone sodium succinate (MPSS) or polyethylene glycol (PEG) as neuroprotectants is advocated but controversial because neither treatment has been tested in placebo-controlled, randomized, blinded trials in dogs. HYPOTHESIS Polyethylene glycol will improve the outcome of severe spinal cord injury caused by IVDH compared to MPSS or placebo. ANIMALS Client-owned dogs with acute onset of thoracolumbar IVDH causing paralysis and loss of nociception for <24 hours. METHODS Dogs were randomized to receive MPSS, PEG, or placebo; drugs appeared identical and group allocation was masked. Drug administration was initiated once the diagnosis of IVDH was confirmed and all dogs underwent hemilaminectomy. Neurologic function was assessed 2, 4, 8, and 12 weeks postoperatively using an open field gait score (OFS) as the primary outcome measure. Outcomes were compared by the Wilcoxon rank sum test. RESULTS Sixty-three dogs were recruited and 47.6% recovered ambulation. 17.5% developed progressive myelomalacia but there was no association with group. There was no difference in OFS among groups. Although full study power was not reached, conditional power analyses indicated the futility of continued case recruitment. CONCLUSIONS This clinical trial did not show a benefit of either MPSS or PEG in the treatment of acute, severe thoracolumbar IVDH when used as adjunctive medical treatment administered to dogs presenting within 24 hours of onset of paralysis.
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Affiliation(s)
- N J Olby
- College of Veterinary Medicine, Atlanta, Georgia
- Center of Comparative Medicine and Translational Research, Atlanta, Georgia
| | | | - J-H Lim
- College of Veterinary Medicine, Atlanta, Georgia
- Center of Comparative Medicine and Translational Research, Atlanta, Georgia
| | - M Davidian
- Department of Statistics, NCSU, Atlanta, Georgia
| | - C L Mariani
- College of Veterinary Medicine, Atlanta, Georgia
- Center of Comparative Medicine and Translational Research, Atlanta, Georgia
| | - A C Freeman
- College of Veterinary Medicine, UGA, Atlanta, Georgia
| | - S R Platt
- College of Veterinary Medicine, UGA, Atlanta, Georgia
| | - J Humphrey
- College of Veterinary Medicine, Atlanta, Georgia
| | - M Kent
- College of Veterinary Medicine, UGA, Atlanta, Georgia
| | | | - R Longshore
- Gulf Coast Veterinary Specialists, Houston, TX
| | - P J Early
- College of Veterinary Medicine, Atlanta, Georgia
| | - K R Muñana
- College of Veterinary Medicine, Atlanta, Georgia
- Center of Comparative Medicine and Translational Research, Atlanta, Georgia
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Song RB, Glass EN, Kent M, Castro FA, deLahunta A. Magnetic resonance imaging and computed tomography findings of Dyke-Davidoff-Masson-like syndrome in a cat. Aust Vet J 2015; 93:377-80. [PMID: 26412120 DOI: 10.1111/avj.12365] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2014] [Revised: 12/30/2014] [Accepted: 04/13/2015] [Indexed: 11/27/2022]
Abstract
CASE REPORT A 3.5-year-old spayed female Domestic Shorthair cat was evaluated for new onset seizures and lateralising signs indicative of a lesion in the right prosencephalon. Magnetic resonance imaging and computed tomography of the head revealed hypoplasia of the right cerebral hemisphere and changes in the overlying cranium, including hyperostosis and expansion of the diploic space, resulting in an increased pneumatisation of the rostral bones of the cranium. A congenital injury to the cerebral hemisphere and secondary changes of the cranium in response to the decreased brain parenchyma was presumed. Similar changes have been previously recognised in human patients with unilateral anomalies of the cerebral hemispheres, termed Dyke-Davidoff-Masson syndrome (DDMS). CONCLUSION The case presented is the first clinical and imaging description of a cat with a syndrome that closely resembles DDMS in humans. The description of the syndrome allows recognition of an additional differential for seizures in a young patient and informs the clinician of the imaging characteristics of the cranium seen with early loss of brain parenchyma.
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Affiliation(s)
- R B Song
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA.
| | - E N Glass
- Department of Neurology and Neurosurgery, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - F A Castro
- Department of Radiology, Red Bank Veterinary Hospital, Tinton Falls, NJ, USA
| | - A deLahunta
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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Dieterich S, Trestrail E, Holt R, Saini S, Pfeiffer I, Kent M, Hansen K. SU-E-T-133: Assessing IMRT Treatment Delivery Accuracy and Consistency On a Varian TrueBeam Using the SunNuclear PerFraction EPID Dosimetry Software. Med Phys 2015. [DOI: 10.1118/1.4924494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Al-Nadaf S, Platt SR, Kent M, Northrup N, Howerth EW. Minimal interleukin expression in canine intracranial meningiomas. Vet Rec 2015; 177:75. [PMID: 26109283 DOI: 10.1136/vr.103135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2015] [Indexed: 12/31/2022]
Affiliation(s)
- S Al-Nadaf
- The Department of Small Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Athens, Georgia
| | - S R Platt
- The Department of Small Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Athens, Georgia
| | - M Kent
- The Department of Small Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Athens, Georgia
| | - N Northrup
- The Department of Small Animal Medicine and Surgery, University of Georgia, College of Veterinary Medicine, Athens, Georgia
| | - E W Howerth
- The Department of Pathology, University of Georgia, College of Veterinary Medicine, Athens, Georgia
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Yamamoto T, Kent M, Wisner E, Fujita Y, Boone J. TU-CD-BRA-08: Single-Energy Computed Tomography-Based Pulmonary Perfusion Imaging: Proof-Of-Principle in a Canine Model. Med Phys 2015. [DOI: 10.1118/1.4925605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hicks J, Platt S, Kent M, Haley A. Canine brain tumours: a model for the human disease? Vet Comp Oncol 2015; 15:252-272. [PMID: 25988678 DOI: 10.1111/vco.12152] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 04/04/2015] [Accepted: 04/06/2015] [Indexed: 01/10/2023]
Abstract
Canine brain tumours are becoming established as naturally occurring models of disease to advance diagnostic and therapeutic understanding successfully. The size and structure of the dog's brain, histopathology and molecular characteristics of canine brain tumours, as well as the presence of an intact immune system, all support the potential success of this model. The limited success of current therapeutic regimens such as surgery and radiation for dogs with intracranial tumours means that there can be tremendous mutual benefit from collaboration with our human counterparts resulting in the development of new treatments. The similarities and differences between the canine and human diseases are described in this article, emphasizing both the importance and limitations of canines in brain tumour research. Recent clinical veterinary therapeutic trials are also described to demonstrate the areas of research in which canines have already been utilized and to highlight the important potential benefits of translational research to companion dogs.
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Affiliation(s)
- J Hicks
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - S Platt
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - A Haley
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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Clifford R, Shivarathre D, Bidwai A, Kent M, Smith M, Brownson P, Guisasola I. Infection in elective shoulder surgery. Int J Surg 2014. [DOI: 10.1016/j.ijsu.2014.08.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Freeman AC, Platt SR, Kent M, Huguet E, Rusbridge C, Holmes S. Chiari-like malformation and syringomyelia in American Brussels Griffon dogs. J Vet Intern Med 2014; 28:1551-9. [PMID: 25145262 PMCID: PMC4895564 DOI: 10.1111/jvim.12421] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 06/11/2014] [Accepted: 06/19/2014] [Indexed: 11/29/2022] Open
Abstract
Background Although Chiari‐like malformation (CM) and syringomyelia (SM) have been described in many small breed dogs, the prevalence and clinical manifestations of this complex have not been documented in a large cohort of American Brussels Griffon (ABG) dogs. Objectives To characterize the clinical and magnetic resonance imaging (MRI) features of CM and SM in the ABG breed. Animals Eighty‐four American Kennel Club registered ABG dogs were recruited. Methods Prospective study. Complete histories and neurologic examinations were obtained before MRI. Images were blindly reviewed and calculations were made by using OsiriX. All analyses were performed by Student's t‐test, Spearman's correlation, ANOVA, and chi‐square test where appropriate. Results Chiari‐like malformation and SM were present in 65% and 52% of dogs, respectively. Twenty‐eight percent of dogs had neurologic deficits and 20% had neck pain. Mean central canal (CC) transverse height was 2.5 mm with a mean length of 3.6 cervical vertebrae. Neurologic deficits were significantly associated with a larger syrinx (P = .04, P = .08) and syrinx size increased with age (P = .027). SM was associated with a smaller craniocervical junction (CCJ) height (P = .04) and larger ventricles (P = .0001; P < .001). Conclusions and Clinical Importance Syringomyelia and CM are prevalent in American Brussels Griffon dogs. Syrinx size is associated with neurologic deficits, CM, larger ventricles, a smaller craniocervical junction height, neurologic deficits, and cerebellar herniation. Fifty‐two percent of dogs with a SM were clinically normal.
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Affiliation(s)
- A C Freeman
- Animal Health Trust, Centre for Small Animal Studies, Newmarket, Suffolk, UK
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Bertalan A, Glass EN, Kent M, De LaHunta A, Bradley C. Late-onset cerebellar abiotrophy in a Labrador Retriever. Aust Vet J 2014; 92:339-42. [DOI: 10.1111/avj.12211] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/20/2014] [Indexed: 11/28/2022]
Affiliation(s)
- A Bertalan
- Internal Medicine; University of Pennsylvania; 2025 Matthew J Ryan Veterinary Hospital, 3900 Delancey St Philadelphia PA 19104 USA
| | - EN Glass
- Neurology & Neurosurgery; Red Bank Veterinary Hospital; Tinton Falls NJ USA
| | - M Kent
- Neurology/Neurosurgery; University of Georgia College of Veterinary Medicine; Athens GA USA
| | - A De LaHunta
- Anatomy; Cornell University College of Veterinary Medicine; Ithaca NY USA
| | - C Bradley
- Anatomic Pathology; University of Pennsylvania; Philadelphia PA USA
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Cheng L, Huang Z, Zhou W, Wu Q, Rich J, Bao S, Baxter P, Mao H, Zhao X, Liu Z, Huang Y, Voicu H, Gurusiddappa S, Su JM, Perlaky L, Dauser R, Leung HCE, Muraszko KM, Heth JA, Fan X, Lau CC, Man TK, Chintagumpala M, Li XN, Clark P, Zorniak M, Cho Y, Zhang X, Walden D, Shusta E, Kuo J, Sengupta S, Goel-Bhattacharya S, Kulkarni S, Cochran B, Cusulin C, Luchman A, Weiss S, Wu M, Fernandez N, Agnihotri S, Diaz R, Rutka J, Bredel M, Karamchandani J, Das S, Day B, Stringer B, Al-Ejeh F, Ting M, Wilson J, Ensbey K, Jamieson P, Bruce Z, Lim YC, Offenhauser C, Charmsaz S, Cooper L, Ellacott J, Harding A, Lickliter J, Inglis P, Reynolds B, Walker D, Lackmann M, Boyd A, Berezovsky A, Poisson L, Hasselbach L, Irtenkauf S, Transou A, Mikkelsen T, deCarvalho AC, Emlet D, Del Vecchio C, Gupta P, Li G, Skirboll S, Wong A, Figueroa J, Shahar T, Hossain A, Lang F, Fouse S, Nakamura J, James CD, Chang S, Costello J, Frerich JM, Rahimpour S, Zhuang Z, Heiss JD, Golebiewska A, Stieber D, Evers L, Lenkiewicz E, Brons NHC, Nicot N, Oudin A, Bougnaud S, Hertel F, Bjerkvig R, Barrett M, Vallar L, Niclou SP, Hao X, Rahn J, Ujack E, Lun X, Cairncross G, Weiss S, Senger D, Robbins S, Harness J, Lerner R, Ihara Y, Santos R, Torre JDL, Lu A, Ozawa T, Nicolaides T, James D, Petritsch C, Higgins D, Schroeder M, Ball B, Milligan B, Meyer F, Sarkaria J, Henley J, Flavahan W, Wu Q, Hitomi M, Rahim N, Kim Y, Sloan A, Weil R, Nakano I, Sarkaria J, Stringer B, Li M, Lathia J, Rich J, Hjelmeland A, Kaluzova M, Platt S, Kent M, Bouras A, Machaidze R, Hadjipanayis C, Kang SG, Kim SH, Huh YM, Kim EH, Park EK, Chang JH, Kim SH, Hong YK, Kim DS, Lee SJ, Kim EH, Kang SG, Hitomi M, Deleyrolle L, Sinyuk M, Li M, Goan W, Otvos B, Rohaus M, Oli M, Vedam-Mai V, Schonberg D, Wu Q, Rich J, Reynolds B, Lathia J, Lee ST, Chu K, Kim SH, Lee SK, Kim M, Roh JK, Lerner R, Griveau A, Ihara Y, Reichholf B, McMahon M, Rowitch D, James D, Petritsch C, Nitta R, Mitra S, Agarwal M, Bui T, Li G, Lin J, Adamson C, Martinez-Quintanilla J, Choi SH, Bhere D, Heidari P, He D, Mahmood U, Shah K, Mitra S, Gholamin S, Feroze A, Achrol A, Kahn S, Weissman I, Cheshier S, Nakano I, Sulman EP, Wang Q, Mostovenko E, Liu H, Lichti CF, Shavkunov A, Kroes RA, Moskal JR, Conrad CA, Lang FF, Emmett MR, Nilsson CL, Osuka S, Sampetrean O, Shimizu T, Saga I, Onishi N, Sugihara E, Okubo J, Fujita S, Takano S, Matsumura A, Saya H, Saito N, Fu J, Wang S, Yung WKA, Koul D, Schmid RS, Irvin DM, Vitucci M, Bash RE, Werneke AM, Miller CR, Shinojima N, Hossain A, Takezaki T, Fueyo J, Gumin J, Gao F, Nwajei F, Marini FC, Andreeff M, Kuratsu JI, Lang FF, Singh S, Burrell K, Koch E, Agnihotri S, Jalali S, Vartanian A, Gumin J, Sulman E, Lang F, Wouters B, Zadeh G, Spelat R, Singer E, Matlaf L, McAllister S, Soroceanu L, Spiegl-Kreinecker S, Loetsch D, Laaber M, Schrangl C, Wohrer A, Hainfellner J, Marosi C, Pichler J, Weis S, Wurm G, Widhalm G, Knosp E, Berger W, Takezaki T, Shinojima N, Kuratsu JI, Lang F, Tam Q, Tanaka S, Nakada M, Yamada D, Nakano I, Todo T, Hayashi Y, Hamada JI, Hirao A, Tilghman J, Ying M, Laterra J, Venere M, Chang C, Wu Q, Summers M, Rosenfeld S, Rich J, Tanaka S, Luk S, Chang C, Iafrate J, Cahill D, Martuza R, Rabkin S, Chi A, Wakimoto H, Wirsching HG, Krishnan S, Frei K, Krayenbuhl N, Reifenberger G, Weller M, Tabatabai G, Man J, Shoemake J, Venere M, Rich J, Yu J. STEM CELLS. Neuro Oncol 2013. [DOI: 10.1093/neuonc/not190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Xylinas E, Kent M, Kluth L, Pycha A, Comploj E, Svatek RS, Lotan Y, Trinh QD, Karakiewicz PI, Holmang S, Scherr DS, Zerbib M, Vickers AJ, Shariat SF. Accuracy of the EORTC risk tables and of the CUETO scoring model to predict outcomes in non-muscle-invasive urothelial carcinoma of the bladder. Br J Cancer 2013; 109:1460-6. [PMID: 23982601 PMCID: PMC3776972 DOI: 10.1038/bjc.2013.372] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 06/13/2013] [Accepted: 06/22/2013] [Indexed: 11/24/2022] Open
Abstract
Background: The European Organization for Research and Treatment of Cancer (EORTC) risk tables and the Spanish Urological Club for Oncological Treatment (CUETO) scoring model are the two best-established predictive tools to help decision making for patients with non-muscle-invasive bladder cancer (NMIBC). The aim of the current study was to assess the performance of these predictive tools in a large multicentre cohort of NMIBC patients. Methods: We performed a retrospective analysis of 4689 patients with NMIBC. To evaluate the discrimination of the models, we created Cox proportional hazard regression models for time to disease recurrence and progression. We incorporated the patients calculated risk score as a predictor into both of these models and then calculated their discrimination (concordance indexes). We compared the concordance index of our models with the concordance index reported for the models. Results: With a median follow-up of 57 months, 2110 patients experienced disease recurrence and 591 patients experienced disease progression. Both tools exhibited a poor discrimination for disease recurrence and progression (0.597 and 0.662, and 0.523 and 0.616, respectively, for the EORTC and CUETO models). The EORTC tables overestimated the risk of disease recurrence and progression in high-risk patients. The discrimination of the EORTC tables was even lower in the subgroup of patients treated with BCG (0.554 and 0.576 for disease recurrence and progression, respectively). Conversely, the discrimination of the CUETO model increased in BCG-treated patients (0.597 and 0.645 for disease recurrence and progression, respectively). However, both models overestimated the risk of disease progression in high-risk patients. Conclusion: The EORTC risk tables and the CUETO scoring system exhibit a poor discrimination for both disease recurrence and progression in NMIBC patients. These models overestimated the risk of disease recurrence and progression in high-risk patients. These overestimations remained in BCG-treated patients, especially for the EORTC tables. These results underline the need for improving our current predictive tools. However, our study is limited by its retrospective and multi-institutional design.
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Affiliation(s)
- E Xylinas
- 1] Department of Urology, Weill Cornell Medical College, New York, NY, USA [2] Department of Urology, Cochin Hospital, APHP, Paris Descartes University, Paris, France
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Kent M, Glass EN, de Lahunta A, Platt SR, Haley A. Prevalence of effusion in the tympanic cavity in dogs with dysfunction of the trigeminal nerve: 18 cases (2004-2013). J Vet Intern Med 2013; 27:1153-8. [PMID: 23875748 DOI: 10.1111/jvim.12140] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 05/14/2013] [Accepted: 05/30/2013] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Animals with disorders involving the trigeminal nerve or its nuclei in the brainstem can have effusion in the tympanic cavity ipsilateral to the side of the neurological deficits. The tensor veli palatini muscle (TVP), innervated by the mandibular branch of the trigeminal nerve, opens the pharyngeal orifice of the auditory tube. With denervation of the TVP, dysfunction of the auditory tube may occur, which could lead to effusion. HYPOTHESIS/OBJECTIVES To determine the prevalence of effusion in the tympanic cavity in dogs with disorders involving the trigeminal nerve. ANIMALS Eighteen client-owned dogs were evaluated retrospectively. METHODS Retrospective study. RESULTS Diagnostic imaging databases were searched for dogs having undergone magnetic resonance imaging (MRI) evaluation for signs referable to dysfunction of the trigeminal nerve. Signalment and neurological examination findings were recorded. The MRI study was evaluated for the presence or absence of effusion. MRI characteristics of the affected trigeminal nerve and the muscles of mastication were recorded. Based on the location of the trigeminal nerve lesion, dogs were divided into three categories: brainstem, trigeminal canal, or extracranial. Eighteen dogs met the inclusion criteria. Six of 18 dogs (33%) had effusion in the tympanic cavity ipsilateral to the affected trigeminal nerve. CONCLUSION AND CLINICAL IMPORTANCE A substantial proportion of dogs with a lesion affecting the trigeminal nerve had effusion in the tympanic cavity. This finding likely represents denervation of the TVP muscle, which may have led to dysfunction of the auditory tube.
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Affiliation(s)
- M Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
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Freeman A, Platt S, Vandenberg M, Holmes S, Kent M, Rech R, Howerth E, Mishra S, O'Brien D, Wenger D. GM2 Gangliosidosis (B Variant) in Two Japanese Chins: Clinical, Magnetic Resonance Imaging and Pathological Characteristics. J Vet Intern Med 2013; 27:771-6. [DOI: 10.1111/jvim.12118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 04/01/2013] [Accepted: 04/18/2013] [Indexed: 11/26/2022] Open
Affiliation(s)
- A.C. Freeman
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - S.R. Platt
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - M. Vandenberg
- Southern New Hampshire Veterinary Referral Hospital; Manchester NH
| | - S. Holmes
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - M. Kent
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - R. Rech
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - E. Howerth
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - S. Mishra
- College of Veterinary Medicine; University of Georgia; Athens GA
| | - D.P. O'Brien
- College of Veterinary Medicine; University of Missouri; Columbia MO
| | - D. Wenger
- Department of Neurology; Jefferson Medical College; Philadelphia PA
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Edmunds G, Holt R, Trestrail L, Kent M. SU-E-T-700: Characterization of the Dosimetric Impact of Rotational Errors On Individual Patients in IMRT Plan Using a Canine Model. Med Phys 2013. [DOI: 10.1118/1.4815127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Andres KM, Kent M, Siedlecki CT, Mayer J, Brandão J, Hawkins MG, Morrisey JK, Quesenberry K, Valli VE, Bennett RA. The use of megavoltage radiation therapy in the treatment of thymomas in rabbits: 19 cases. Vet Comp Oncol 2012; 10:82-94. [DOI: 10.1111/j.1476-5829.2011.00273.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wolff CA, Holmes SP, Young BD, Chen AV, Kent M, Platt SR, Savage MY, Schatzberg SJ, Fosgate GT, Levine JM. Magnetic resonance imaging for the differentiation of neoplastic, inflammatory, and cerebrovascular brain disease in dogs. J Vet Intern Med 2012; 26:589-97. [PMID: 22404482 DOI: 10.1111/j.1939-1676.2012.00899.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 01/22/2012] [Accepted: 01/24/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND The reliability and validity of magnetic resonance imaging (MRI) for detecting neoplastic, inflammatory, and cerebrovascular brain lesions in dogs are unknown. OBJECTIVES To estimate sensitivity, specificity, and inter-rater agreement of MRI for classifying histologically confirmed neoplastic, inflammatory, and cerebrovascular brain disease in dogs. ANIMALS One hundred and twenty-one client-owned dogs diagnosed with brain disease (n = 77) or idiopathic epilepsy (n = 44). METHODS Retrospective, multi-institutional case series; 3 investigators analyzed MR images for the presence of a brain lesion with and without knowledge of case clinical data. Investigators recorded most likely etiologic category (neoplastic, inflammatory, cerebrovascular) and most likely specific disease for all brain lesions. Sensitivity, specificity, and inter-rater agreement were calculated to estimate diagnostic performance. RESULTS MRI was 94.4% sensitive (95% confidence interval [CI] = 88.7, 97.4) and 95.5% specific (95% CI = 89.9, 98.1) for detecting a brain lesion with similarly high performance for classifying neoplastic and inflammatory disease, but was only 38.9% sensitive for classifying cerebrovascular disease (95% CI = 16.1, 67.0). In general, high specificity but not sensitivity was retained for MR diagnosis of specific brain diseases. Inter-rater agreement was very good for overall detection of structural brain lesions (κ = 0.895, 95% CI = 0.792, 0.998, P < .001) and neoplastic lesions, but was only fair for cerebrovascular lesions (κ = 0.299, 95% CI = 0, 0.761, P = .21). CONCLUSIONS AND CLINICAL IMPORTANCE MRI is sensitive and specific for identifying brain lesions and classifying disease as inflammatory or neoplastic in dogs. Cerebrovascular disease in general and specific inflammatory, neoplastic, and cerebrovascular brain diseases were frequently misclassified.
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Affiliation(s)
- C A Wolff
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA
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Freeman AC, Platt SR, Kent M, Howerth E, Holmes SP. Magnetic resonance imaging enhancement of intervertebral disc disease in 30 dogs following chemical fat saturation. J Small Anim Pract 2012; 53:120-5. [PMID: 22250714 DOI: 10.1111/j.1748-5827.2011.01174.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To describe the patterns of enhancement of extradural intervertebral disc on chemically fat saturated gadolinium-enhanced magnetic resonance images and to investigate the clinical and pathological associations with enhancement. METHODS Medical records and magnetic resonance images were reviewed from 30 dogs with histopathologically confirmed disc disease and enhancement on a T1-weighted postcontrast fat saturated sequence. RESULTS Median duration of neurological signs was 4 days and the most common grade of severity was II, seen in 46·6% of dogs. Homogeneous, heterogeneous and peripheral patterns of disc enhancement were described, with peripheral enhancement most commonly identified (57% of dogs). There were no clinical or pathological differences between the dogs with each of the patterns. The mean signal intensity of a region of interest within the extruded disc material and contrast-to-noise ratio of the disc material were significantly higher on postcontrast T1-weighted fat saturated images (P=<0·0001 each). CLINICAL SIGNIFICANCE The use of fat saturated gadolinium-enhanced magnetic resonance imaging can detect enhancement of extradural disc material. Patterns of enhancement are not associated with the clinical presentation or pathological features.
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Affiliation(s)
- A C Freeman
- Department of Small Animal Medicine and Surgery, The University of Georgia, Athens, GA 30602, USA
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Grindflek E, Meuwissen THE, Aasmundstad T, Hamland H, Hansen MHS, Nome T, Kent M, Torjesen P, Lien S. Revealing genetic relationships between compounds affecting boar taint and reproduction in pigs. J Anim Sci 2011; 89:680-92. [PMID: 21346135 DOI: 10.2527/jas.2010-3290] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Boar taint is characterized by an unpleasant taste or odor in intact male pigs and is primarily attributed to increased concentrations of androstenone and skatole and to a lesser extent by increased indole. The boar taint compounds skatole and indole are produced by gut bacteria, metabolized in the liver, and stored in the fat tissue. Androstenone, on the other hand, is synthesized in the testis along with testosterone and estrogens, which are known to be important factors affecting fertility. The main goal of this study was to investigate the relationship between genetic factors involved in the primary boar taint compounds in an attempt to discover ways to reduce boar taint without decreasing fertility-related compounds. Heritabilities and genetic correlations between traits were estimated for compounds related to boar taint (androstenone, skatole, indole) and reproduction (testosterone, 17β-estradiol, and estrone sulfate). Heritabilities in the range of 0.47 to 0.67 were detected for androstenone concentrations in both fat and plasma, whereas those for skatole and indole were slightly less (0.27 to 0.41). The genetic correlations between androstenone in plasma and fat were extremely high (0.91 to 0.98) in Duroc and Landrace. In addition, genetic correlations between androstenone (both plasma and fat) and the other sex steroids (estrone sulfate, 17β-estradiol, and testosterone) were very high, in the range of 0.80 to 0.95. Furthermore, a genome-wide association study (GWA) and a combined linkage disequilibrium and linkage analysis (LDLA) were conducted on 1,533 purebred Landrace and 1,027 purebred Duroc to find genome regions involved in genetic control of the boar taint compounds androstenone, skatole, and indole, and sex hormones related to fertility traits. Up to 3,297 informative SNP markers were included for both breeds, including SNP from several boar taint candidate genes. From the GWA study, we found that altogether 27 regions were significant at a genome-wide level (P < 0.05) and an additional 7 regions were significant at a chromosomal level. From the LDLA study, 7 regions were significant on a genome-wide level and an additional 7 regions were significant at a chromosomal level. The most convincing associations were obtained in 6 regions affecting skatole and indole in fat on chromosomes 1, 2, 3, 7, 13, and 14, 1 region on chromosome 6 affecting androstenone in plasma only, and 5 regions on chromosomes 3, 4, 13, and 15 affecting androstenone, testosterone, and estrogens.
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Affiliation(s)
- E Grindflek
- NORSVIN (The Norwegian Pig Breeders Association), PO Box 504, 2304 Hamar, Norway.
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Haley AC, Platt SR, Kent M, Schatzberg SJ, Durham A, Cochrane S, Westworth D, Shelton GD. Breed-specific polymyositis in Hungarian Vizsla dogs. J Vet Intern Med 2011; 25:393-7. [PMID: 21281345 DOI: 10.1111/j.1939-1676.2010.0660.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- A C Haley
- College of Veterinary Medicine, Department of Small Animal Medicine and Surgery, University of Georgia, Athens, GA, USA.
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Barber RM, Li Q, Diniz PPVP, Porter BF, Breitschwerdt EB, Claiborne MK, Birkenheuer AJ, Levine JM, Levine GJ, Chandler K, Kenny P, Nghiem P, Wei S, Greene CE, Kent M, Platt SR, Greer K, Schatzberg SJ. Evaluation of brain tissue or cerebrospinal fluid with broadly reactive polymerase chain reaction for Ehrlichia, Anaplasma, spotted fever group Rickettsia, Bartonella, and Borrelia species in canine neurological diseases (109 cases). J Vet Intern Med 2010; 24:372-8. [PMID: 20102497 DOI: 10.1111/j.1939-1676.2009.0466.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Vector-transmitted microorganisms in the genera Ehrlichia, Anaplasma, Rickettsia, Bartonella, and Borrelia are commonly suspected in dogs with meningoencephalomyelitis (MEM), but the prevalence of these pathogens in brain tissue and cerebrospinal fluid (CSF) of dogs with MEM is unknown. HYPOTHESIS/OBJECTIVES To determine if DNA from these genera is present in brain tissue and CSF of dogs with MEM, including those with meningoencephalitis of unknown etiology (MUE) and histopathologically confirmed cases of granulomatous (GME) and necrotizing meningoencephalomyelitis (NME). ANIMALS Hundred and nine dogs examined for neurological signs at 3 university referral hospitals. METHODS Brain tissue and CSF were collected prospectively from dogs with neurological disease and evaluated by broadly reactive polymerase chain reaction (PCR) for Ehrlichia, Anaplasma, Spotted Fever Group Rickettsia, Bartonella, and Borrelia species. Medical records were evaluated retrospectively to identify MEM and control cases. RESULTS Seventy-five cases of MUE, GME, or NME, including brain tissue from 31 and CSF from 44 cases, were evaluated. Brain tissue from 4 cases and inflammatory CSF from 30 cases with infectious, neoplastic, compressive, vascular, or malformative disease were evaluated as controls. Pathogen nucleic acids were detected in 1 of 109 cases evaluated. Specifically, Bartonella vinsonii subsp. berkhoffii DNA was amplified from 1/6 dogs with histopathologically confirmed GME. CONCLUSION AND CLINICAL IMPORTANCE The results of this investigation suggest that microorganisms in the genera Ehrlichia, Anaplasma, Rickettsia, and Borrelia are unlikely to be directly associated with canine MEM in the geographic regions evaluated. The role of Bartonella in the pathogenesis of GME warrants further investigation.
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Affiliation(s)
- R M Barber
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA
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Levine J, Fosgate G, Chen A, Rushing R, Nghiem P, Platt S, Bagley R, Kent M, Hicks D, Young B, Schatzberg S. Magnetic Resonance Imaging in Dogs with Neurologic Impairment Due to Acute Thoracic and Lumbar Intervertebral Disk Herniation. J Vet Intern Med 2009; 23:1220-6. [DOI: 10.1111/j.1939-1676.2009.0393.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Eagleson JS, Diaz J, Platt SR, Kent M, Levine JM, Sharp NJH, Schatzberg SJ. Cervical vertebral malformation-malarticulation syndrome in the Bernese mountain dog: clinical and magnetic resonance imaging features. J Small Anim Pract 2009; 50:186-93. [DOI: 10.1111/j.1748-5827.2009.00731.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Degenerative myelopathy (DM) is a common, slowly progressive, debilitating disease reported in several dog breeds, including the German Shepherd Dog and Pembroke Welsh Corgi. Boxer dogs present occasionally for a thoracolumbar myelopathy for which no cause is identified on MRI or cerebrospinal fluid analysis. Despite a lack of a histologic description of DM in the Boxer in the veterinary literature, such dogs are presumed to have DM. Here we report 2 histologically confirmed cases of DM in the Boxer breed in which histologic studies disclosed marked degenerative changes in the spinal cord that were most prominent in the thoracic and cranial lumbar segments. Lesions consisted of myelin vacuolation and degeneration, myelophagocytosis, reactive astrocytosis, and ellipsoid formation most prominent in the lateral and ventral funiculi. We present a detailed histologic description of DM in the Boxer dog and compare it to DM in other purebred dogs.
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Affiliation(s)
- A. D. Miller
- Division of Comparative Pathology, New England Regional Primate Center, Harvard Medical School, Southborough, MA
| | - R. Barber
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
| | - B. F. Porter
- Department of Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX
| | - R. M. Peters
- Department of Biomedical Sciences, Section of Anatomic Pathology, Cornell University, Ithaca, NY
| | - M. Kent
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
| | - S. R. Platt
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
| | - S. J. Schatzberg
- Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, University of Georgia, Athens, GA
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