RADIOGRAPHIC ANATOMY OF THE CANINE COXOFEMORAL JOINT USING THE DORSAL ACETABULAR RIM (DAR) VIEW     

Brian J.  Trumpatori  BS  Kyle G.  Mathews  DVM  MS  Simon R.  Roe  BVSc  MS  PHD  Ian D.  Robertson  BVSc 《Veterinary radiology & ultrasound》2003,44(5):526-532

A radiographic study of the anatomy of the canine acetabulum was performed. The relationship between the area of dorsal acetabular rim that is subject to early damage in dogs with coxofemoral joint laxity, and the "DAR point" identified on dorsal acetabular rim (DAR) radiographic views was examined. Radiographs and digital photographs were made of the pelvis harvested from each of six skeletally mature dogs. Through analysis of these images, it was determined that in the standing animal, the DAR point is located 4–6 mm (or approximately 37°) caudal to the dorsal acetabular rim area that is prone to early damage in dogs with coxofemoral joint laxity. This study suggests that the DAR radiographic view may under-represent changes to the dorsal acetabular rim in dogs with coxofemoral laxity.  相似文献   

Colour dilution alopecia in seven Dachshunds. A clinical study and the hereditary, microscopical and ultrastructural aspect of the disease   总被引：1，自引：0，他引：1  

LUC BECO  JACQUES FONTAINE  THELMA LEE GROSS†  GÉRARD CHARLIER‡ 《Veterinary dermatology》1996,7(2):91-97

Abstract Seven Dachshunds from five different families were studied for late-onset alopecia. All were born blue and tan in litters containing unaffected wild boar coated animals. Six of the seven dogs changed their colour during the first months of their life from blue and tan to ‘deadleaf’ or grey and tan. Histopathology, light microscopy of hairs and scanning electron microscopy of the hairs showed similarities with those previously described in blue Doberman Pinschers and confirmed the diagnosis of colour dilution alopecia (CDA). Transmission electron microscopy of cross-sectioned hairs showed vacuoles containing melanin granules of different size in medullary, subcortical and intracortical areas. Some opened at the hair surface and released melanin granules. Study of the pedigree proved autosomal recessive inheritance. Résumé— 7 teckels de 5 families ont fait l'objet de cette étude. Tous sont nés bleu et feu et proviennent de portées comprenant des chiots sains couleur sanglier. Six de ces chiens ont changé leur couleur durant les premiers mois de leur vie, passant ainsi du bleu et feu à‘feuilles mortes’ ou gris et feu. Histologiquement, l'examen microscopique des poils et l'examen ultrastructural à balayage montrent des lésions similaires à celles décrites chez les Dobermanns Pinschers bleus, et confirment le diagnostic d'Alopécie des Robes Diluées (ARD). La microscopie électronique à transmission des poils sectionnés montre des vacuoles contenant des grains de mélanine dans les régions médullaires, subcorticales, et intracorticales des poils. Quelques poils montrent la sortie des granules de mélanine à la surface du poil. L'étude des pédigrés prouve un mode de transmission autosomal récessif de cette maladie. [Beco, L., Fontaine, J., Gross, T.L., Charlier, G. Colour dilution alopecia in seven Dachshunds. A clinical study and the hereditary, microscopical and ultrastructural aspects of the disease (Alopécie des Robes Diluées chez 7 teckels: étude clinique et aspects héréditaires, microscopiques et ultrastructuraux). Veterinary Dermatology 1996; 7 : 91–97.] Resumen Se estudió la alopecia de aparición tardía en siete perros Dashshund de cinco familias diferentes. Todos los cachorros nacieron de color azul y canela en camadas que contenían animates con pelaje jabalí, sin afectación. Seis de los siete perros cambiaron su color durante los primeros meses de vida de azul y canela a ‘hoja seca’ o gris y canela. La histopatologia, la microscopía óptica de los pelos y la microscopía electrónica de barrido de los pelos mostraron similitudes con los previamente descritos en los Doberman Pinscher azules y confirmaron el diagnóstico de alopecia de color diluido (ACD). La microscopia electrónica de transmisión de cortes transversales del pelo mostraron vacuolas que contenían gránulos de melanina de tamaño variable en las zonas medular, subcortical e intracortical. Algunos se abrían a la superficie del pelo y liberaban gránulos de melanina. El estudio del pedigree reveló una forma de herenicia autosómica recesiva. [Beco, L., Fontaine, J., Gross, T.L., Charlier, G. Colour dilution alopecia in seven Dachshunds. A clinical study and the hereditary, microscopical and ultrastructural aspects of the disease (Alopecia de color diluido en siete Dachshunds. Estudio clinico y aspectos hereditarios, microscopicos y ultraestructurales de la enfermedad). Veterinary Dermatology 1996; 7 : 91–97.] Zusammenfassung— Sieben Dackel aus fünf verschiedenen Familien wurden wegen Alopezie mit spätem Beginn untersucht. Alle wurden als ‘blau und tan’ in Würfen geboren, die gesunde saufarbene aufwiesen. Sechs der sieben Hunde änderten ihre Farbe während der ersten Lebensmonate von ‘blau und tan’ nach ‘dürrlaub’ oder ‘grau und tan’. Histopathologisch zeigten Lichtmikroskopie der Haare und Elektronen-mikroskopabtastung der Haare Ähnlichkeiten mit denen früher beschriebener Veränderungen beim blauen Dobermann, und bestätigten die Diagnose Farbverdünnungsalopezie (CDA). Die Transmissionselek-tronenmikroscopie von quergeschnittenen Haaren zeigte Vakuolen, die Melaningranula verschiedener Größe in medullären, subkortikalen und intrakortikalen Zonen enthielten. Einige öffneten sich hin zur Haarober fläche und entließen die Melaningranula. Die Untersuchung der Abstammung zeigte eine autosomal rezessive Erblichkeit. [Beco, L., Fontaine, J., Gross, T. L., Charlier, G. Colour dilution alopecia in seven dachschunds. A clinical study and the hereditary microscopical and ultrastructural aspects of the disease (Farbverdünnungsalopezie bei sieben Dackeln. Eine klinische Studie über erbliche, mikroskopische und ultrastrukturelle Aspekte dieser Erkrankung). Veterinary Dermatology 1996; 7 : 91–97.]  相似文献   

Sebaceous gland melanosis in dogs with endocrine skin disease or follicular dysplasia: a retrospective study     

MARY S. BAGLADI  DANNY W. SCOTT  WILLIAM H. MILLER JR 《Veterinary dermatology》1996,7(2):85-90

Abstract Skin biopsy specimens from 107 dogs with endocrine skin disorders were examined for the presence of melanin granules in the sebaceous glands or ducts (sebaceous gland melanosis). Nineteen of these cases (17.8%) had sebaceous gland melanosis. Skin biopsy specimens from 71 dogs with follicular dysplasia were similarly examined and 27 (38.0%) had sebaceous gland melanosis. Sebaceous gland melanosis alone cannot be used to differentiate histologically follicular dysplasia and endocrine skin disorders. Résumé— Des biopsies cutanées provenant de 107 chiens présentant des troubles cutanés associés à une dysendocrinie ont été examinées pour la rechereche de granules de mélanine dans les glandes sébacées ou dans leurs canaux (mélanose des glandes sébacées). Dix neuf de ces cas (17,8%) présentaient une mélanose des glandes sébacées. Des biopsies provenant de 71 chiens à dysplasic folliculaire ont été examinées de la même manière et 27 (38%) de ces cas présentaient également une mélanose des glandes sébacées. La mélanose des glandes sébacées seule ne peut être utilisée pour différencier histopathologiquement les dysplasies folliculaires des lésions cutanées associées à une dysendocrinie. [Bagladi, M.S., Scott, D.W., Miller, W.H. Sebaceous gland melanosis in dogs with endocrine skin disease or follicular dysplasia: A retrospective study (Mélanose des glandes sébacées chez des chiens présentant une dysendocrinic à expression cutanée et chez des chiens présentant une dysplasie folliculaire). Veterinary Dermatology 1996; 7 : 85–90.] Resumen Se examinó la presencia de gránules de melanina en las glándulas sebáceas (melanosis de glándulas sebáceas) en muestras de biopsia cutánea de 107 perros con desequilibrios endocrinos cutáneos. Diecinueve de estos casos (17.8%) mostraban melanosis de glándulas sebáceas. Las muestras de biopsia cutánea de 71 perros con displasia folicular se examinaron de forma similar y 27 (38.0%) mostraban melanosis de glándulas sebáccas. La melanosis de glándulas sebáceas en sí no puede utilizarse para diferenciar histológicamente entre la displasia folicular y los desequilibrios endocrinos. [Bagladi, M.S., Scott, D.W., Miller, W.H. Sebaceous gland melanosis in dogs with endocrine skin disease or follicular dysplasia: A retrospective study (Melanosis glandulas sebaceas en perros con enfermedad endocrina o dysplasia folicular: estudio retrospectivo). Veterinary Dermatology 1996; 7 : 85–90.] Zusammenfassung— Es wurden Hautbiopsien von 107 Hunden mit endokrinen Hauterkrankungen auf das Vorkommen von Melaningranula in den Talgdrüsen oder -ausführungsgängen (Talgdrüsenmelanose) untersucht. 19 dieser Fälle (17,8%) zeigten Talgdrüsenmelanose. Die Hautbiopsien von 71 Hunden mit follikulärer Dysplasie wurden auf ähnliche Weise untersucht, 27 davon (38,0%) wiesen ebenfalls Talgdrüsenmelanose auf. Talgdrüsenmelanose allein kann nicht dazu verwendet werden, um histologisch follikuläre Dysplasie und endokrine Hauterkrankungen zu unterscheiden. [Bagladi, M. S., Scott, D. W., Miller, W. H. Sebaceous gland melanosis in dogs with endocrine skin disease of follicular dysplasia: a retrospective study (Talgdrüsenmelanose bei Hunden mit endokrinen Hauterkrankungen oder follikulärer Dysplasie: eine retrospektive Studie). Veterinary Dermatology 1996; 7 : 85–90.]  相似文献   

GROWTH OF THE RADIUS AND ULNA IN LABRADOR RETRIEVER DOGS WITH OCULAR AND SKELETAL DYSPLASIA     

Colin B.  Carrig  BVSc  PhD  Gretchen M.  Schmidt  DVM  Harold W.  Tvedten  DVM  PhD 《Veterinary radiology & ultrasound》1990,31(3):165-168

An associated ocular and skeletal dysplasia in Labrador Retrievers is caused by one abnormal gene which has recessive effects on the skeleton and incompletely dominant effects on the eye. The forelimbs of normal and affected pups were radiographed between birth and 156 days of age and the length of the radius and ulna measured. There was a significant difference in the mean length of these bones in normal and affected pups at birth and this difference was maintained over the period of observation. Similar differences were observed in purebred Labrador Retrievers and in Labrador Retriever-Beagle crosses. The results of this study suggest that the length of the radius and ulna could be used to identify pups affected by this syndrome if test matings with affected animals were done to identify carrier animals. Abnormal shape of the radius and ulna, which is seen in animals affected with this syndrome, should be used to augment the accuracy of identification of puppies affected by this syndrome.  相似文献   

A variant in OLFML3 is associated with pectinate ligament abnormality and primary closed‐angle glaucoma in Border Collies from the United Kingdom     

James A. C. Oliver  Hattie Wright  Paola A. Massidda  Louise M. Burmeister  Cathryn S. Mellersh 《Veterinary ophthalmology》2020,23(1):25-36

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有压侧向进水泵站肘形进水流道的试验研究     

朱红耕  刘超  费平屏  周济人  高立宝  周平  鲍俊华  马传华 《扬州大学学报(农业与生命科学版)》1997,(2)

进水流道尺寸和形状直接影响水泵叶轮进口断面的流速分布和压力分布，对水泵装置的性能影响很大。模型试验研究表明，优化设计参数，解决了泵站侧向有压进水流道的设计问题，第１次把肘形进水流道应用于长距离有压涵管侧向进水的中型轴流泵站，为水泵叶轮提供了较均匀的流速和压力分布，消除了泵站的振动危害，取得了巨大的工程、经济和社会效益  相似文献   

Suspected fatal venous air embolism during anaesthesia in a Pomeranian dog with pulmonary calcification     

VP Walsh  RG Machon  JS Munday  CJ Broome 《New Zealand veterinary journal》2013,61(5):359-362

CASE HISTORY: Death occurred in a 1.25 kg, 9-month-old female Pomeranian dog undergoing anaesthesia for surgical repair of partially healed fractures of the radius and ulna.

CLINICAL FINDINGS: Following sedation, anaesthesia was induced using thiopentone and maintained with halothane in oxygen. An acute decrease in the dog's end-tidal carbon dioxide (EtCO₂) measurements was noted approximately 50 min after induction, immediately following delivery of a 5-ml bolus of lactated Ringer's solution (LRS) administered to flush a small (0.06 ml) volume of fentanyl via a pre-placed intravenous (I/V) catheter. Venous air embolism (VAE) was suspected and the dog died despite interventive therapy. On post-mortem examination, several air bubbles were noted when the right ventricle was opened under water. Histologically, the kidneys appeared abnormal with immature glomeruli, and the lungs appeared diffusely mineralised. The origin of the air was probably small bubbles and microbubbles that may have been present in the extension set and 20 ml syringe used for the administration of fentanyl and I/V fluids to the dog.

DIAGNOSIS: Renal dysplasia and diffuse pulmonary calcification, with VAE as the probable cause of death.

CLINICAL RELEVANCE: In this case of VAE-associated anaesthetic death, it is further speculated that underlying pulmonary disease, in the form of pulmonary calcification, may have contributed to an increased sensitivity to the adverse effects of VAE.  相似文献   

Enzootic bovine leukosis in New Zealand - A case report and update     

K.G. Thompson  A.C. Johnstone  F. Hilbink 《New Zealand veterinary journal》2013,61(4):190-194

Enzootic bovine leukosis was diagnosed in an year-old Friesian cow which had lost condition and was milking poorly. The cow had a severe nonregenerative anaemia, panhypoproteinaemia and lymphoid leukaemia. At necropsy there was widespread lymphoid infiltration of many organs, including the abomasal mucosa, myocardium, uterus, kidney, lymph nodes and bone marrow. Antibodies against bovine leukaemia virus were detected in the serum. Although clinical enzootic bovine leukosis is rare in New Zealand, having been confirmed on only five properties, infection with the causative agent, bovine leukaemia virus, is more widespread. The results of a recently completed survey of bulk milk samples using an enzyme-linked immunosorbent assay for bovine leukaemia virus antibodies suggest that there are about 300 dairy herds in the country with a bovine leukaemia virus infection level of at least 510%. The economic impact of enzootic bovine leukosis on the productivity of New Zealand's dairy cattle population is probably still negligible but the introduction of control or eradication schemes in Europe and North America could sooner or later lead to restrictions on the export of live cattle and genetic material from New Zealand.  相似文献   

基于K-means聚类与RBFNN的点云DEM构建方法     

赵庆展  李沛婷  马永建  田文忠 《农业机械学报》2019,50(9):208-214

因无人机机载激光雷达(Light detection and ranging,Li DAR)数据具有离散性,在生成数字高程模型(Digital elevation model,DEM)时需选择有效插值方法。以荒漠植被区为研究背景,使用零-均值标准化方法归一化点云回波强度,利用肘方法确定最佳聚类数目,采用K-means方法对点云强度值聚类得到地面点云。在此基础上,采用克里金(Kriging)方法插值抽稀率为20%和80%的地面点云数据,且将点云高程作为变量,建立RBF神经网络预测模型,并通过线性回归检验方法对模型进行精度分析,采用Delaunay三角网内插生成高精度DEM。结果表明:采用K-means方法实现最佳聚类数目为4的聚类,得到地面点云48 722个,在点云较优抽稀率20%的情况下,径向基函数神经网络(Radical basis function neural network,RBFNN)训练时间为56 s,点云高程预测的决定系数R~2为0. 887,均方根误差RMSE为0. 168 m。说明使用RBFNN对K-means聚类滤波得到的地面点云进行高程预测效果较好,可为基于点云构建高精度DEM提供参考。  相似文献   

Generalized Congenital Hypotrichosis in a Female Rottweiler     

PETER J. IHRKE †  RALF S. MUELLER‡ §  ANTHONY A. STANNARD‡ 《Veterinary dermatology》1993,4(2):65-69

Abstract— Generalized congenital hypotrichosis is reported in a female Rottweiler. This is only the second report of this genodermatosis in a female dog. The dog was predominately hairless except for bilaterally symmetric tufts of hair on the head, dorsal midline and umbilical region. Most skin biopsy sections revealed a total lack of epidermal appendages representing a complete failure of follicular development. Occasionally, small rudimentary follicular structures were subtended by melanophages and vertically oriented collagen suggesting the possibility of previously more extensive development followed by subsequent involution. According to a new classification scheme for ectodermal dysplasia proposed by Dr Carol Foil, this dog would be classified as 1–4 defect, cogenital hypotrichosis. Résumé— Une hypotrischose congénitale généralisée chez une chienne Rotweiler est rapportée. Il s'agit du second cas de cette génodermatose décrit chez une chienne. Le chien était nu exception faite de touffe de poils sur les flancs et la tête, la ligne du dos et la region ombilicale. La plupart des biopsies ont révélé une absence totale d'annexe et de développment folliculaire. Parfois quelques structures folliculaires rudimentaires étaient subtentés par la présence de mélanophages et une orientation verticale des fibres de collagène. En suivant la nouvelle classification des dysplasies ectodermiques proposée par le Dr Carol Foil, cet animal a été classé en hypotrychose congénitale de défaut 1–4. Resumen En éste artículo se describe un caso de hipotricosis congénita de tipo generalizado en una hembra de la raza Rottweiler. Éste es el segundo caso de genodermatosis reportado en una perra. Éste animal padecía de una pérdida de pelo general exceptuando algunas mechas aisladas en la cabeza, línea media dorsal y región umbilical, de una manera bilateral y simétrica. La mayoría de las biopsias cutáneas revelaron una falta total de apéndices cutáneos, lo cual representaba una fallo completo en en desarrollo del folículo. De manera espóradica, se observaron estructuras foliculares rudimentarias ínvadidas de melanófagos y con fibras de colágeno orientadas verticalmente sugiriendo la posibilidad de desarrollo previo mas extensivo seguido de posterior involución. De acuerdo con la nueva clasificación de displasia ectodérmica propuesta por Foil, éste animal sería clasificado con un defecto de 1–4 de hipotricosis congenital.  相似文献