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The frequency of intestinal parasites in puppies from Mexican kennels  [PDF]
Enedina Jiménez-Cardoso, Leticia Eligio-García, Adrián Cortés-Campos, Apolinar Cano Estrada, Margarita Pinto-Sagahón, Cynthia Noguera-Estrada
Health (Health) , 2010, DOI: 10.4236/health.2010.211196
Abstract: The purpose of this investigation was to determine the intestinal parasite prevalence in puppies from six different kennels; four kennels were in Guadalajara and Zapopan cities (Jalisco State) and two kennels were in Mexico City. From October 2006 to November 2007, we collected 441 fecal samples from 147 puppies, both male and female, ranging from 1 to 36 months of age. Three samples from every puppy were analyzed by using the Faust technique. The prevalence found were as follows: Giardia intestinalis (genotype A and B) 6.8%; Cystoisospora 21.08%; Uncinaria 7.48%; Toxocara canis 12.29% and multiparasitism (Giardia, Toxocara and Uncinaria) 4.76%. The highest prevalence for both Giardia and Cystoisospora were found in 2-3- month-old puppies; the highest prevalence for Toxocara canis was found in 3-4-month-old puppies. In the kennels of Mexico City we found mainly Giardia intestinalis, Cystoisospora to be most prevalent in Zapopan and Toxocara canis in Guadalajara. The high prevalence of intestinal parasites found in this study demonstrates an increased risk for infection in humans, as these animals are usually a common pet in many homes. This zoonotic phenomenon represents an important health problem for any community.
Behavior of CD44 Receptors in Mammary Tumors of Dogs  [PDF]
Geórgia M. Magalh?es, Ana Carolina T. Silveira, Danísio P. Munari, Antonio C. Alessi
Open Journal of Veterinary Medicine (OJVM) , 2012, DOI: 10.4236/ojvm.2012.22008
Abstract: CD44 is a cell adhesion molecule closely related to tumor progression in humans. In canine mammary tumors, little information is available about this molecule. The aim of this study was to analyze, by immunohistochemistry, the behavior of this molecule in canine mammary tumors with or without the presence of metastasis. The dogs were divided in groups without metastasis (G1) and with metastasis (G2, with subsets A—original neoplasia and B—metastatic neoplasia). Tumors were classified according to the World Health Organization (WHO) criteria. The cells were counted whereby the plasma membrane and/or cytoplasm are stained. There was a significant increase in the number of cells immunostained for CD44 in the metastastic masses (G2B) as compared to groups G1 and G2A. It is concluded that in metastatic mass there was a significant increase in CD44 receptors, probably important for biology of the mammary tumor of dogs.
Severe Thyrotoxicosis Does Not Accelerate 1a-Hydroxylation of 25-Hydroxyvitamin D3 in Dogs. Experimental Study  [PDF]
Christos Georgiou Velentzas
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.412093

Two healthy dogs weighing 18 kg and 13 kg each received an intravenous injection of 7 μg/kg 25-hydroxyvitamin D3 (25OHD3). Subsequently, they were blood-sampled in order to determine the plasma levels of 25(OH)D3 over 4-hourly time intervals and for a time period of 24 hours. After a period of 18 days since the last blood sampling, the animals were brought to a hyperthyroid state and the intravenous injection of 7 μg/kg 25OHD3 was repeated. Blood sampling was performed every 4 hours and over a time period of 24 hours in order to determine the levels of 25OHD3. The graphic plotting of plasma levels of 25OHD3 in the euthyroid state did not differ from that in the hyperthyroid state. This finding in dog animal experimentation is indicative that the increased levels of thyroid hormones did not affect the activity of CYP27B1 and CYP24A1 enzymes that are related to the catabolism of 25OHD3 over a minimum of 24 hours period.

Observing the Jumping Laser Dogs  [PDF]
Alberto Tufaile, Timm A. Vanderelli, Adriana Pedrosa Biscaia Tufaile
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.411198
Abstract: Jumping sun dogs are rapid light flashes changing over clouds, with some of them located close to the places of halo formation in thunder storms clouds. This paper presents an outline of some aspects that are required for understanding the jumping sun dogs, using some experiments with light scattering in complex fluids. In our analogy, we have observed the jumping laser dogs, in which the ice crystals are replaced by needlelike structures of ferrofluid, the electric field in the atmosphere is represented by an external magnetic field, and the laser beam scattered by the ferrofluid structure has the same role of the sun as the source of light scattered by the ice crystals subjected to changing electric fields in thunderstorm clouds.
Prevalence of Giardia duodenalis among dogs seized by the Center for Control of Zoonoses (CCZ) of the city of Lages, Santa Catarina, Brazil  [PDF]
Rosiléia Marinho Quadros, Paulo Henrique Exterckotter Weiss, Geison Willian Ezequiel, Renato Batista Tamanho, Geanice Lepo, Marcio Rodrigues da Silva, Carlos Roberto Jo?o da Silva Junior, Flávio Antonio Pacheco de Araujo, Luiz Claudio Miletti
Health (Health) , 2013, DOI: 10.4236/health.2013.51016

The knowledge of the epidemiology of parasitic infections in stray and domestic animals, especially of its incidence and prevalence, is fundamental to adopting effective prophylactic measures. Stray dogs play an important role in environmental contamination favoring the transmission cycle of zoonotic agents. Among the parasitic infections that affect humans, Giardia duodenalis is the most common intestinal protozoa and was designated as a re-emerging infectious disease. This study aimed to determine the prevalence of G. duodenalis in dogs siezed by the Center for Control of Zoonoses (CCZ) of the city of Lages, Santa Catarina, Brazil using two diagnostic techniques. In 357 stool samples analysed, the prevalence of G. duodenalis cysts was 5.3% (19/357) and 4.8% (17/357) detected by floatation and sedimentation techniques, respecttively. No correspondence between gender and age was found among the methods used for analyzing the infected dogs in this study. Our data suggested that two diagnostic techniques should be used in a complementary way to ensure that false negatives are not neglected.

Dogs: Active Role Model for Cancer Studies—A Review  [PDF]
Sana Munaf Hawai, M. Al-Zayer, Mohammed M. Ali, Yuanjie Niu, A. Alawad, M. Aljofan, A. Aljarbou, S. Altuwaijri
Journal of Cancer Therapy (JCT) , 2013, DOI: 10.4236/jct.2013.45113

Many studies have been done and many results have been established for studying cancers in human and the ways of treating it. However, one thing that remains relevant is the study model that is used to diagnose, cure or conclude treatment methods for human cancers. The scientists have tried some ways to link the data and tried to analyze the malicious disease in various animal models in order to solve the problem for humans. Out of all the models, scientists have preferred dogs as the most suitable model and conducted studies on them. Our article will review the reason for preferences given to dog as a study model and what the previous studies have tried to conclude by considering the dreaded disease in dogs. Our article has focused on most of the recent observations and tried to elucidate the reasons/preferences for studying cancer disease in dogs (scientific name; Canis Lupus familiaris). We will also talk about the idea of comparative oncology programs that many centers adapt in order to study the disease called cancer.

Comparison of the Efficacy of Two Commercial Coccidicidal Compounds on Experimentally Infected Dogs  [PDF]
Froylán Ibarra-Velarde, Yolanda Vera-Montenegro, Nelyda Salda?a-Hernández, Pedro Ochoa-Galván
Pharmacology & Pharmacy (PP) , 2014, DOI: 10.4236/pp.2014.513127
Abstract: The aim of the present study was to compare the coccidicidal efficacy of two commercial compounds for artificially infected dogs. Eighteen cocccidia-free dogs, male and female aged between 2 and 4 months old, were infected each with 20,000 Cystoisospora oocists cultured under laboratory conditions. When the poppies showed high counts of oocysts per gramm (OPG) (McMaster method), they were divided into 3 groups (G). G1 was treated with a compound named One® (Lab. Bio Zoo) containing 150 mg of toltrazuril/tablet, administered daily/5days dosing 1 tablet per 10 kg b.w. G2 received Giacoccide® (Pet’s Pharma) containing 250 mg of sulfadimetoxine and 165 mg of dimetridazole dosing 1 tablet per 10 kg b.w. twice a day for 10 days. G3 served as an untreated control. The puppies were coprologically monitored on Days 0, 3, 5, 10, 15, 20 and 25 to determine the percentage of OPG. Efficacy was measured based on the OPG reduction on treated animals relative to the untreated control. The results indicated an efficacy for compound One of 78.4%, 100%, 100%, 100%, 100% and 100%, for Days 3, 5, 10, 15, 20 and 25, respectively and for Giacoccide 40.6%, 45.5%, 47.4%, 65.9%, 90.4% and 92.7%, for Days 3, 5, 10, 15, 20 and 25, respectively. No statistical difference was observed on the weight of the treated puppies (p < 0.764), but the control group was statistically different to the treated ones (p < 0.014). It was concluded that compound One showed greater efficacy than Giacoccide for the treatment of canine coccidiosis in artificially infected dogs.
Estudo comparativo da anestesia com propofol ou thionembutal em c?es
Vaidergorn, Jairo;Machado, Ana Lúcia;Juliano, Yara;Patella, Karen Ferreira;Reim?o, Gláucia Mansur;Piedade, Thaís Balderrama;Lin, Renata;
Acta Cirurgica Brasileira , 2000, DOI: 10.1590/S0102-86502000000400007
Abstract: the authors compared the use of propofol and thionembutal in dogs with respect to the heart and respiratory rate and the presence of the following occurrences: apnea, tremor, bradycardia, tachycardia, tachypnea and cardiac arrest. a hundred dogs, in good general conditions, were selected and randomly chosen to be anaesthetized with propofol or thionembutal and parameters were monitored according to the objective of the study. there is a significant importance regarding dog?s apnea and tremor in both groups which are, comparatively smaller with propofol. propofol has showed to be a safer drug to anaesthetize dogs than thionembutal.
Estudio comparativo entre la neumocistografía, la cistografía de contraste positivo y la cistografía de doble contraste en perros
Archivos de medicina veterinaria , 1997, DOI: 10.4067/S0301-732X1997000100011
Abstract: in order to compare three radiographic techniques: pneumocystography, positive contrast cystography and double contrast cystography, three series of 24 radiographs each in lateral and ventrodorsal projections were made. six healthy adult male dogs with weight ranging between 7 and 16 kg were used. food was withheld for 24 hours and two enemas were made before the series of radiographs were taken. dogs were anaesthetized with sodium thiopental (20 mg/kg i.v.). the contrast medium was introduced through a urethral catheter. pneumocystography was performed in the first series introducing air (10 ml/kg) in the bladder. positive contrast cystography was performed in the second series introducing hypaque m-60% diluted, contributing 100 mg of iodine per ml (10 ml/kg). in the double contrast cystography hypaque m-60% diluted (10 ml) was introduced, in concentration of 150 mg of iodine per ml. then air was introduced (10 ml/kg) through a catheter. plates were taken in both projections at 1 and 10 minutes for each technique. the radiographic plates of each series were analized comparing the characteristics of radiographic density, outline and size. in neumocystography, positive contrast and double contrast cystography, the radiographic density was predominantly low, high and intermediate, respectively. the radiographic outline was mainly regular for the three techniques. with respect to bladder size, there was a decrease of height and an increase of length and width at 10 minutes. comparing these three radiographic techniques, it can be concluded that the one that best outlines the bladder mucosa is double contrast. pneumocystography provides the best image for opaque structures and cystography best shows the position of the urinary bladder
Garrapatas (Acari: Ixodidae) en perros de la ciudad de Concepción, Chile
Archivos de medicina veterinaria , 2002, DOI: 10.4067/S0301-732X2002000100015
Abstract: a total of 137 specimens of ticks were collected in eight veterinary clinics in concepcion city to determine the ticks-species present on dogs. the specimens were analyzed with the aid of a stereomicroscope and sem pictures were taken. from the total, 38.7% were adults of amblyomma tigrinum and 61.3% adults and inmatures of rhipicephalus sanguineus
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