QUANTITATIVE AND QUALITATIVE SCINTIGRAPHIC MEASUREMENT OF RENAL FUNCTION IN DOGS EXPOSED TO TOXIC DOSES OF GENTAMICIN     

Michaël  Lora-Michiels  Med Vet  Kelly  Anzola  MD  Germän  Amaya  DMV PhD  Mauricio  Solano  Med Vet 《Veterinary radiology & ultrasound》2001,42(6):553-561

Five, 3-month-old mongrel dogs weighing between 4.5 to 5.5 kg were studied to evaluate and compare the efficiency of 99mTc-DTPA, 99mTc-MAG3, and 99mTc-DMSA in detecting gentamicin-induced renal tubular injury. After baseline renograms using all three methods, all dogs received daily intramuscular injections of gentamicin at a dose of 30-45 mg/kg. Additional studies were obtained after a cumulative dose of 450, 1,575, and 2,250 mg of gentamicin was reached. Glomerular filtration rate (GFR), effective renal plasma flow (ERPF), and percentage of total renal uptake measurements were calculated. Baseline and post-gentamicin injection blood urea nitrogen (BUN) and serum creatinine values were determined. A Duncan test revealed significant renal function impairment at 450 mgs of cumulated gentamicin with 99mTc-DMSA and at 1,575 mgs of cumulated gentamicin for 99mTc-DTPA and 99mTc-MAG3. There was no correlation between BUN and serum creatinine values when compared to gentamicin (p > 0.05). The images obtained with 99mTc-MAG3 were of better quality than those obtained with 99mTc-DTPA even under severe renal dysfunction. Percentage of 99mTc-DMSA uptake indicated renal damage, before than GFR and ERPF. BUN and serum creatinine measurements were poor indicators of gentamicin-induced renal failure.  相似文献   

FAMILIAL CEREBELLAR ATAXIA WITH HYDROCEPHALUS IN BULL MASTIFFS     

Ronald P.  Johnson  DVM  T. Mark  Neer  DVM  Beth P.  Partington  DVM  MS  Doo-Youn  Cho  DVM  PhD  Curtis R.  Partington  MD  PhD 《Veterinary radiology & ultrasound》2001,42(3):246-249

Familial cerebellar ataxia with concurrent hydrocephalus has previously been described in a family of bull mastiff pups, and recently has been identified in a litter from Louisiana. The 4 affected pups had ataxia, hypermetria, conscious proprioceptive deficits, behavioral abnormalities, and a visual deficit. In magnetic resonance imaging of the brain of two of the pups, there were symmetric hydrocephalus and two focal areas of increased signal intensity within the central nuclei of the cerebellum. Histopathologically there was vacuolization and mild astrogliosis within the deep cerebellar nuclei (dentate, interpositus, fastigial), caudal colliculi, and lateral vestibular nuclei. Although the postmortem results were not exactly the same as in the previously published report, the clinical features and histopathologic findings strongly support the diagnosis. This disorder is most likely inherited in an autosomal recessive manner.  相似文献   

Biomechanics of Cranial Cruciate Ligament Reconstruction in the Dog II. Mechanical Properties   总被引：1，自引：1，他引：0  

DAVID L. BUTLER PhD    DONALD A. HULSE DipACVS  DVM    MATTHEW D. KAY  EDWARD S. GROOD PhD    PETER K. SHIRES DVM    ROBERT D'AMBROSIA MD  HIROMU SHOJI MD 《Veterinary surgery : VS》1983,12(3):113-118

A biomechanical analysis of the results of an over-the-top procedure for replacement of the cranial cruciate ligament (CCL) in the dog is presented. Using 15 adult mongrel dogs, the CCL in one stifle joint was reconstructed using fascia lata and the lateral one-third of the patellar ligament. The opposite CCL served as the control. Animals were sacrificed at 0, 4, 12 and 26 weeks postoperation and axial failure tests were performed. Stiffness, maximum load, and elastic modulus of the replacement increased over time, while elongation to maximum load continually decreased as compared to controls. Other parameters showed less consistent trends.
The results are encouraging given the reduction in joint laxity and the increases in tissue stiffness and strength. However, the ligament substitute was still unable to replicate the mechanical properties of the normal cruciate ligament. Longer studies therefore are required to determine if this replacement is capable of completely restoring joint stability and normal function.  相似文献   

Radioactive Iodine Treatment of a Functional Thyroid Carcinoma Producing Hyperthyroidism in a Dog   总被引：1，自引：0，他引：1  

Mark E. Peterson DVM    Peter P. Kintzer DVM    James R. Hurley MD  David V. Becker MD 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》1989,3(1):20-25

Radioactive iodine (131I) was used in the treatment of a 12-year-old female dog with hyperthyroidism resulting from a large, unresectable (and metastatic) thyroid carcinoma associated with signs of severe inspiratory stridor and dyspnea. Hyperthyroidism was diagnosed on the basis of clinical signs (polyuria, polydipsia, polyphagia, weight loss, nervousness) and high basal serum thyroxine (T4) concentrations, as well as thyroid radioiodine kinetic studies that showed a high radioiodine uptake into the thyroid (% thyroid uptake) and markedly increased serum concentrations of protein-bound iodine-131 (PB131I) after 131I tracer injection. Thyroid imaging revealed diffuse radionuclide accumulation by the tumor, which involved both thyroid lobes. The dog was treated with three large doses of radioiodine (131I), ranging from 60 to 75 mCi, given at intervals of 5 to 7 months. The dog became euthyroid, and the size of the tumor decreased by approximately 25% after each 131I treatment, improving the severe inspiratory stridor and dyspnea, but both the hyperthyroid state and breathing difficulty recurred within a few months of each treatment. The dog was euthanatized 5 months after the last treatment because of progressive tracheal compression and pulmonary metastasis.  相似文献   

Dermatophytosis in horses treated with terbinafine     

Craig G. Burkhart MSPH  MD  Kristina M. Burkhart 《Journal of Equine Veterinary Science》1999,19(10):652

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MAGNETIC RESONANCE IMAGING AND CROSS SECTIONAL ANATOMY OF THE NORMAL EQUINE SINUSES AND NASAL PASSAGES     

Alberto  Arencibia  DVM  PhD  Jose M.  Vázquez  DVM  PhD  Raduán  Jaber  DVM  Francisco  Gil  DVM  PhD  Juan A.  Ramiírez  MD  PhD  Miguel  Rivero  DVM  Nelson  González  DVM  PhD  Erik R.  Wisner  DVM 《Veterinary radiology & ultrasound》2000,41(4):313-319

The purpose of this investigation was to define the magnetic resonance imaging anatomy of the rostral part of the equine head. 10 mm-thick, T1-weighted images of two isolated equine cadaver heads were obtained using a 1.5 Tesla magnet and a body coil. MR images were compared to corresponding frozen cross-sections of the cadaver head. Relevant anatomic structures were identified and labeled at each level. The resulting images provided excellent anatomic detail of the oral and nasal cavities, paranasal sinuses and associated structures. Annotated MR images from this study are intended as a reference for clinical MR imaging studies of the equine head.  相似文献   

DOHUBLE-PHASE PARATHYROID SCINTIGRAPHY IN DOGS USING TECHNETIUM-99M-SESTAMIBI     

Cary L.  Matwichuk  DVM  MVSc  Susan M.  Taylor  DVM  Gregory B.  Daniel  DVM  MS  A.A Wilkinson  MB  Gilbert G.  Matte  Bpharm  PhD  E.M. Dudzic  MD  Cindy L.  Shmon  DVM  DVSc 《Veterinary radiology & ultrasound》2000,41(5):461-469

The purpose of this study was to evaluate the utility of double-phase parathyroid scintigraphy using 99mTc-sestamibi for detecting and localizing hyperfunctioning parathyroid glands in hypercalcemic dogs. Fifteen hypercalcemic dogs that underwent parathyroid scintigraphy were included in this study: 3 dogs with hypercalcemia of malignancy, and 12 dogs with hyperfunctioning parathyroid tissue (parathyroid adenoma or parathyroid hyperplasia). The presence of parathyroid adenoma or parathyroid hyperplasia was documented by histopathologic examination. In 3 dogs with hypercalcemia of malignancy, parathyroid scintigraphy was negative for hyperfunctioning parathyroid tissue and the scans were classified as true negative. Parathyroid scintigraphy correctly identified the presence and location of hyperfunctioning parathyroid tissue in only 1 of 6 dogs with a parathyroid adenoma. False positive and false negative results occurred in dogs with parathyroid adenomas. Parathyroid scintigraphy failed to detect hyperfunctioning parathyroid tissue in 5 of 6 dogs with parathyroid hyperplasia and were classified as false negative. False positive results were obtained in the remaining dog with parathyroid hyperplasia. Sensitivity of parathyroid scintigraphy for detecting and localizing hyperfunctioning parathyroid tissue was 11%, specificity was 50%, and overall accuracy was 27%. Positive and negative predictive value were 25% and 27%, respectively. Sensitivity for detection of parathyroid adenomas was 25%, and sensitivity for detection of hyperplastic glands was 0 %. Results of this study indicate that double-phase parathyroid scintigraphy does not appear to have acceptable accuracy in detecting hyperfunctioning parathyroid glands in dogs. Due to the poor sensitivity and specificity of the technique in dogs, parathyroid scintigraphy is not recommended for definitive identification of abnormal parathyroid glands as the cause of hypercalcemia in dogs.  相似文献   

Effect of Cyclin‐dependent Kinase (CDK) Inhibition on Expression,Localization and Activity of Maturation Promoting Factor (MPF) and Mitogen Activated Protein Kinase (MAPK) in Bovine Oocytes     

MD Quetglas  PR Adona  THC De Bem  PRL Pires  CLV Leal 《Reproduction in domestic animals》2010,45(6):1074-1081

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Litter-mediated allelopathic effects of kudzu (Pueraria montana) on Bidens pilosa and Lolium perenne and its persistence in soil     

MD. HARUN RASHID  TAKASHI ASAEDA  MD. NAZIM UDDIN 《Weed Biology and Management》2010,10(1):48-56

This study investigated the allelopathic effects of kudzu litter on the seed germination and early growth of Bidens pilosa and Lolium perenne . The bioassays, with various concentrations (10, 20, 30, 40, and 50 g L⁻¹) of aqueous kudzu litter leachate, significantly affected the germination percentages and radicle growth of both species. These parameters decreased progressively when the seedlings were exposed to increasing concentrations of leachate. The root and shoot length, dry weight, and chlorophyll concentration of the B. pilosa and L. perenne seedlings also were significantly affected when they were grown in leachate-amended soil. However, the chlorophyll fluorescence values of the seedlings subjected to different concentrations of aqueous kudzu litter leachate indicated that the mere presence of leachate in the soil was not stressful for the plants. The seedlings of both species were under stressful conditions only when they were grown in the soil that was treated with higher concentrations of leachate (30, 40, or 50 g L⁻¹). A 6 week decomposition study of the kudzu litter in soil was conducted to observe the retention of phenolic content in the soil. The results showed that, although the concentration of dissolved organic carbon decreased with increasing decomposition, the phenolic concentration was not significantly affected when the observation period ended. This suggests that the phytotoxic properties of kudzu litter remain stable in soil systems for a considerable amount of time after incorporation into the soil.  相似文献   

MAGNETIC RESONANCE IMAGING OF THE NORMAL EQUINE BRAIN     

Alberto  Arencibia  DVM  PhD  Jose M.  Vazquez  DVM  PhD  Juan A.  Ramirez  MD  PhD  Gregorio  Ramirez  DVM  PhD  Jose M.  Vilar  DVM  Miguel A.  Rivero  DVM  Santiago  Alayon  MD  Francisco  Gil  DVM  PhD 《Veterinary radiology & ultrasound》2001,42(5):405-408

The purpose of this investigation was to define the magnetic resonance (MR) imaging appearance of the brain and associated structures of the equine head. MR images were acquired in oblique dorsal (T2-weighted), sagittal (T1-weighted), and transverse planes (T2-weighted), using a magnet of 1.5 Tesla and a human body coil. Relevant anatomic structures were identified and labeled at each level. The resulting images provided excellent anatomic detail of the cranioencephalic structures. Annotated MR images from this study are intended as a reference for clinical imaging studies of the equine head, specially in the diagnosis of brain diseases in the horse.  相似文献