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11.
Carley J. Abramson Laurent Garosi Simon R. Platt Ruth Dennis J. Fraser McConnell 《Veterinary radiology & ultrasound》2005,46(3):225-229
Ischemia and infarction of the spinal cord is a known cause of acute spinal injury in dogs. Currently, the diagnosis of spinal cord infarction in small animals is based on history, clinical signs, and the exclusion of other differentials with radiography and myelography. It is a diagnosis only confirmed through necropsy examination of the spinal cord. The aim of this paper is to describe the Magnetic resonance imaging (MRI) findings of the spinal cord of dogs with suspected spinal cord infarcts to utilize this technology for antemortem support of this diagnosis. This retrospective study evaluated the spinal MR examinations of 11 dogs with acute onset of asymmetric nonpainful myelopathies. All patients except one (imaged at 2 months) were imaged within 1 week of clinical signs and managed conservatively with minimal medical and no surgical intervention. They were followed clinically for a minimum of 4 months after discharge. MR findings in all dogs were characterized by focal, intramedullary, hyperintense lesions on T2-weighted images with variable contrast enhancement similar to what is reported in humans. Though it could not be used to diagnose spinal cord infarction definitively, MRI was useful in excluding extramedullary spinal lesions and supporting intramedullary infarction as a cause of the acute neurologic signs. Together with the history and clinical examination findings, MRI is supportive of a diagnosis of spinal cord infarction. 相似文献
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1. Eggshell pieces (1 cm2) were decalcified using a solution of EDTA (200 g/litre, pH 6.9 to 7.0) in paraformaldehyde (2 g/litre) and glutaraldehyde (0.5 g/litre) in phosphate buffer. 2. They were prepared for transmission electron microscopy (TEM). 3. TEM identified a vertically aligned matrix associated with the vertical crystal layer (VCL). It is hypothesised that the vertical orientation of calcite crystals in the VCL is closely linked to this vertical matrix. 4. TEM also revealed the presence of a 2-layered cuticle, the inner layer containing vesicles which were absent in the outer. 5. Cuticular vesicles contain hydroxyapatite and are thought to play a role in the termination of shell formation. The current paper presents data relating to microbial apatitic systems that strengthen this hypothesis. 相似文献
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Andrew F. Fraser 《Tropical animal health and production》1971,3(3):173-182
Summary Testicular atrophy in the goat is described as a principal factor in goat infertility. The clinical features of the condition
are apparent in reduced testicular size and altered testicular shape. The semen picture is markedly affected: there are reduced
numbers of sperms and an associated high incidence of abnormal sperm forms.
Sumario Se describe a la atrofia testicular en cabras como un factor principal en la infertilidad de los caprinos. Las características clínicas de la condición son aparentes por el tama?o testicular reducido y por la alteración de la forma testicular. El cuadro del semen esta marcadamente afectado, habiendo un número reducido de espermatozoides, con una alta incidencia de formas de espermatozoides anormales.
Résumé L'atrophie testiculaire est, chez le bouc, la cause majeure de son infertilité. Cliniquement elle se traduit par la diminution sensible du volume des testicules et l'altération de leur forme. L'image du sperme est caractérisée par la pauvreté en spermatozoides avec un nombre élevé de formes anormales.相似文献
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A case history of psittacosis in the dog 总被引：2，自引：0，他引：2
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