Grupo MVeIT – Página 9 – Grupo de Investigación del Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS) de la Universidad de Las Palmas de Gran Canaria.

12
Feb 13
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Enfermedades cardiorrespiratorias del gato Colección Canis y Felis (nº120, 1)

DIRECCIÓN DE LA MONOGRAFÍA: José Alberto Montoya-Alonso

AUTORES: José Alberto Montoya-Alonso, Javier Engel Manchado, Laín García Guasch, Jordi Manubens Grau, Alicia Caro Vadillo, Enrique Ynaraja Ramírez, Jorgelina Carla, Cristobal Frías Rides

ÁREAS TERAPÉUTICAS: Aparato respiratorio, Medicina felina, Medicina interna, Cardiología

El gato es un gran desconocido, un enigmático animal, místico, independiente, con carácter, se hace notar, se hace querer, es rebelde, nunca es indiferente. El diccionario Larousse define al gato como: «Pequeño mamífero carnívoro generalmente doméstico y de costumbres básicamente nocturnas”. Esta frase tan simple refleja la dificultad de los lingüistas para tipificar a este animal tan especial. ¿Es el gato un animal de compañía o nosotros le acompañamos a él?

Como escribió la reportera y escritora estadounidense Jacquelyn Mitchard: – “A juicio de los gatos, las personas …………..

Editorial (año): Acalanthis Comunicación y estrategia S.L.U. Madrid, 2013

ISSN: 1133-2751

Enlace a Canis et Felis

16
Ene 13
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D-dimer deposits in lungs and kidneys suggest its use as a marker in the clinical workup of dogs with heartworm (dirofilaria immitis) disease.

Veterinary Parasitology. Volume 191, Issue 1-2, 16 January 2013, Pages 182-186
Carretón, E., González-Miguel, J., Montoya-Alonso, J.A., Morchón, R., Simón, F., Passeri, B., Cantoni, A.M., Kramer, L.

Abstract

It has been reported that dogs with heartworm disease (Dirofilaria immitis) show increased plasma levels of D-dimer, a fibrin degradation product present in the blood after a blood clot is degraded by fibrinolysis. In the present study the authors show that, in dogs with both experimental and natural infections with D. immitis, D-dimer deposits in lungs and kidneys are associated with pulmonary thromboembolism and microfilariemic status, as well as there was a clear association between increased plasma values of D-dimer and positive staining in immunohistochemistry. Results suggest that the monitoring of D-dimer levels in infected dogs could be useful in evaluating the presence of pulmonary thromboembolism in the lungs and that microfilariae may induce microthrombosis in kidneys, thus contributing to renal pathology.

29
Dic 12
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Effects of Incubation Temperature and Semen Pooling on the Viability of Fresh, Chilled and Freeze-Thawed Canine Semen Samples

Reproduction in Domestic Animals
Volume 47, Issue 6, December 2012, Pages 1049-1055
Batista, M. , Santana, M., Alamo, D., González, F., Niño, T., Cabrera, F., Gracia, A.

Abstract

Contents: This study assessed the effects of different incubation temperatures on semen viability and the influence of pooling on semen longevity. In experiment 1, semen samples were collected from five dogs, individually processed (individual semen: IS) and then aliquots from each male were pooled (pooled semen: PS). Semen samples (IS and PS) were diluted in a Tris-glucose-yolk extender and preserved as fresh (37 and 25°C) and chilled semen (4°C). Sperm motility and the percentages of sperm abnormalities and acrosome membrane integrity were assessed for 24h. Storage at 25 or 4°C for the first 24h yielded similar semen quality, but incubation at 37°C caused drastic reduction in sperm motility from 8h of incubation onwards. In experiment 2, the semen was processed in the same way to that of experiment 1 and then preserved at 25 or 4°C until semen inactivation. Semen that was incubated at 25°C became completely inactive after 3-4days of storage, while semen that was preserved at 4°C presented with more gradually decreased sperm motility (mean values of 40-60% for the first 8days). In addition, the mixing of semen was only observed to influence the sperm quality of the samples stored at 4°C. In experiment 3, semen was collected from five dogs, pooled and frozen in liquid nitrogen; after thawing, it was preserved at 37, 25, 15 and 4°C, and the sperm quality was defined. The motility of the freeze-thawed semen samples decreased quickly in the first 4h after thawing, regardless of the preservation temperature of the thawed semen. This study confirmed that semen preserved at 37°C should be used within a maximum of 12h, while the semen stored at 25°C shows acceptable quality for 24h. Chilled semen presented highest most sustainable quality, especially when semen is processed as pooled semen

29
Oct 12
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Exuberant mucometra associated with atresia of the cervix in a queen

Reproduction in Domestic Animals
Volume 47, Issue 5, October 2012, Pages e71-e74
Batista-Arteaga, M. , Santana, M., Espinosa-de-los-Monteros, A., Déniz, S., Alamo, D., Herráez, P.

Abstract

This short communication reports the clinical, ultrasonographic and histopathological findings in a cat with atresia of the uterine cervix and mucometra. After 6months of continuous oestrous behaviour, a remarkable abdominal enlargement was observed in a 14-year-old queen. A presumptive diagnosis of mucometra was concluded after the ultrasound evaluation and based on clinical signs and blood analyses. Ovariohysterectomy revealed a notable symmetrical distension (4-5cm in diameter) of both uterine horns that were filled with fluid (690ml); microbiological analyses confirmed the aseptic nature of the uterine fluid. Ovarian follicular cysts and cystic subsurface epithelial structures, >1.5cm in diameter, were present in both ovaries and no corpora lutea were observed. Gross and microscopic evaluation of the uterus confirmed the development of cystic endometrial hyperplasia and the absence of an internal cervical os. The endometrial hyperplasia and mucometra could have developed as a consequence of repeated oestrogenic stimulation.

22
Oct 12
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Myocardial damage in dogs affected by heartworm disease (Dirofilaria immitis): Immunohistochemical study of cardiac myoglobin and troponin I in naturally infected dogs

Veterinary Parasitology. Volume 189, Issue 2-4, 26 October 2012, Pages 390-393
Carretón, E., Grandi, G., Morchón, R., Simón, F., Passeri, B., Cantoni, A.M., Kramer, L. , Montoya-Alonso, J.A.

Abstract

It has recently been reported that dogs affected by canine heartworm disease (Dirofilaria immitis) can show an increase in plasma levels of myoglobin and cardiac troponin I, two markers of muscle/myocardial injury. In order to determine if this increase is due to myocardial damage, the right ventricle of 24 naturally infected dogs was examined by routine histology and immunohistochemistry with anti-myoglobin and anti-cardiac troponin I antibodies. Microscopic lesions included necrosis and myocyte vacuolization, and were associated with loss of staining for one or both proteins. Results confirm that increased levels of myoglobin and cardiac troponin I are indicative of myocardial damage in dogs affected by heartworm disease.

29
Sep 12
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Neglected tropical diseases of ruminants

Capítulo de Libro en

Ruminants: Anatomy, Behavior and Diseases
September 2012, Pages 1-17
Gutierrez, C

Abstract

Tropical diseases are those that occur principally in the tropics and by extension in subtropics. Some of them are considered neglected because these diseases persist exclusively in the poorest and the most marginalized areas of the world, where the interest of both companies and researchers is limited. There is not an official list of neglected tropical diseases affecting ruminants, but malignant catarrhal fever, foot and mouth disease, heartwater, bovine babesiosis, theileriosis, tsetse transmitted and non tsetse transmitted trypanosomosis, contagious caprine pleuropneumonia or peste des petit ruminant could be clear examples nowadays. Some initiatives, however, have been successful in terms of control and eradication of these diseases. Global Rinderpest Eradication Programme under the auspices of The Food and Agriculture Organization has achieved its eradication in 2011. Unfortunately many other tropical diseases have not received the same attention. The present chapter reviews the current status of the most important neglected tropical diseases of ruminants, including the possible control programs for the different affected areas.

03
Sep 12
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Caudal duplication (dipygus) in a rock pigeon (Columba livia)

European Journal of Anatomy
Volume 16, Issue 3, September 2012, Pages 221-223
Corbera, J.A. , Morales, I., Arencibia, A., Morales, M., Gutiérrez, C

Abstract

The first description of caudal duplication (dipygus) in a pigeon (Columba livia) is presented. Congenital defect is macroscopically and radiologically described. A surgical exeresis was completed. Possible causes are discussed. Although it is unknown if congenital duplications are caused by genetic or environmental factors, or both, genetic factors can be suspected in this case.

01
Ago 12
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Preferences of owners of overweight dogs when buying commercial pet food.

Journal of animal physiology and animal nutrition
Volume 96, Issue 4, August 2012, Pages 655-659
Suarez, L., Peña, C., Carretón, E., Juste, M.C., Bautista-Castaño, I., Montoya-Alonso, J.A.

Abstract

Most pet dogs in developed countries are fed commercial diets. The aim of this study was to evaluate the preferences of owners of overweight dogs when buying commercial pet food. The study was a descriptive observational multi-centre study on a group of 198 owners of urban household dogs. Personal interviews were conducted to examine the owners’ opinions with questions rating the importance of certain qualities of prepared dog food. Bivariate analyses for comparisons of absolute means between groups of owners of dogs with excess weight (n = 137) and owners of normal weight dogs (n = 61) were made using the Mann-Whitney U-test. A low price (p < 0.001) and special offers (p = 0.008) of commercial dog food were more important for owners of dogs with excess weight than for owners of normal weight dogs. The quality of ingredients (p = 0.007) and the nutritional composition (p < 0.001) were more important for owners of normal weight dogs than for owners of dogs with excess weight. The veterinarian was the most important source of information on dog nutrition for both groups (83.6% for owners of normal weight dogs and 83.2% for owners of dogs with excess weight) (p = 0.88). The owners of dogs with excess weight had less interest in corrected dog nutrition than owners of normal weight dogs (p < 0.001).

01
Jul 12
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Human and animal dirofilariasis: The emergence of a zoonotic mosaic.

Clinical Microbiology Reviews
Volume 25, Issue 3, July 2012, Pages 507-544
Simón, F. , Siles-Lucas, M., Morchón, R., González-Miguel, J., Mellado, I., Carretón, E., Montoya-Alonso, J.A.

Abstract

Dirofilariasis represents a zoonotic mosaic, which includes two main filarial species (Dirofilaria immitis and D. repens) that have adapted to canine, feline, and human hosts with distinct biological and clinical implications. At the same time, both D. immitis and D. repens are themselves hosts to symbiotic bacteria of the genus Wolbachia, the study of which has resulted in a profound shift in the understanding of filarial biology, the mechanisms of the pathologies that they produce in their hosts, and issues related to dirofilariasis treatment. Moreover, because dirofilariasis is a vector-borne transmitted disease, their distribution and infection rates have undergone significant modifications influenced by global climate change. Despite advances in our knowledge of D. immitis and D. repens and the pathologies that they inflict on different hosts, there are still many unknown aspects of dirofilariasis. This review is focused on human and animal dirofilariasis, including the basic morphology, biology, protein composition, and metabolism of Dirofilaria species; the climate and human behavioral factors that influence distribution dynamics; the disease pathology; the host-parasite relationship; the mechanisms involved in parasite survival; the immune response and pathogenesis; and the clinical management of human and animal infections.

29
Jun 12
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Influence of Sexual Stimulation and the Administration of Human Chorionic Gonadotrophin on Plasma Testosterone Levels in Dogs (Article)

Reproduction in Domestic Animals
Volume 47, Issue 3, June 2012, Pages e43-e46
Santana, M., Batista, M. , Alamo, D., Cabrera, F., González, F., Gracia, A.

Abstract

The influence of sexual stimulation and human chorionic gonadotrophin (hCG) administration on plasma testosterone concentrations was assessed in five male Beagles. Each dog was exposed to three experimental treatments: C treatment (Control, no stimulation), hCG treatment (dogs were SC injected with 1000IU of hCG) and sexually stimulated (SS) treatment where semen was collected from the males. All dogs were exposed to all treatments, one per week for three consecutive weeks, with a 1week of rest between treatments. Blood samples were taken with the same time intervals (0, 10, 30, 60 and 120min) relative to treatments. Plasma testosterone concentrations were determined with a solid-phase I ¹²⁵ radioimmunoassay. In the control treatment, the testosterone plasma levels did not show significant changes throughout the tested period (mean values ranging between 2.8 and 4.7ng/ml); the hCG group presented a significant increase (p<0.05) in plasma testosterone levels 30min after hCG administration and had the highest value (8.7ng/ml) at 120min post-hCG. Finally, the SS group revealed a slight reduction in testosterone concentration immediately after ejaculation, but the values remained nearly unaltered until 120min after semen collection. When the groups were compared, the hCG group showed higher plasma testosterone values (p<0.05) than did the C and SS groups, starting at 30min and continuing until the end of sampling. This study demonstrates that sexual stimulation associated with semen collection does not produce transitory modifications in plasma testosterone concentrations.

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