Effect of dopamine on excretory urographic image quality and the prevention of contrast-induced nephropathy in dogs     

Choi J  Lee H  Chang D  Lee K  Eom K  Lee Y  Choi M  Yoon J 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2001,63(4):383-388

The effect of low dose dopamine on the excretory urographic image quality and contrast media-induced nephropathy in normal dogs (experiment 1) and the dogs with decreased renal function (experiment 2) were assessed. In experiment 2, decreased renal function was induced by gentamicin overdose. In each experiment, animals were divided into 3 groups. In group 1, only contrast medium (iohexol) was administered. In group 2, contrast medium plus intravenous fluid (0.9% saline) were administered. And in group 3, contrast medium plus intravenous fluid and low dose dopamine were administered. Investigated parameters included intrarenal resistive index (RI), serum BUN and creatinine concentrations, contrast medium elimination time and radiographic image quality. In experiment 1, RI of group I increased at 80 min after contrast medium administration (p<0.05), but RI of group 3 decreased at 48 and 72 hr (p<0.05). Serum BUN concentration of group 1 was higher than that of group 2 and 3 (p<0.05); in radiographic examination, contrast medium elimination time decreased in group 2 and 3, but image quality of group 2 was inferior to that of group 3. In experiment 2, image quality of group 3 only provided adequate visualization of renal structures. The formula of contrast medium plus low dose dopamine was found to provide good nephrogram and pyelogram image quality without supplemental contrast medium, and to protect renal tubules from prolonged exposure to concentrated contrast medium.  相似文献   

ULTRASONOGRAPHIC DIAGNOSIS—PYLOROGASTRIC INTUSSUSCEPTION IN A DOG     

Heechun Lee  Seongchan Yeon  Hyojong Lee  Dongwoo Chang  Kidong Eom  Junghee Yoon  Hojung Choi  Youngwon Lee 《Veterinary radiology & ultrasound》2005,46(4):317-318

A 7-year-old female Maltese presented for evaluation of severe vomiting. A diagnosis of pylorogastric intussusception was made during ultrasonographic examination. The intussusception spontaneously underwent reduction by the following morning.  相似文献   

Effect of intravenous mannitol upon the resistive index in complete unilateral renal obstruction in dogs     

Choi H  Won S  Chung W  Lee K  Chang D  Lee H  Eom K  Lee Y  Yoon J 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(2):158-162

Some studies have shown that relative to baseline, the renal resistive index (RI) remains unchanged in nonobstructed kidneys and increases in obstructed kidneys after administration of furosemide. To our knowledge, the effect of mannitol administration on the renal RI of dogs has not been reported. We evaluated the renal RI in 16 kidneys in 8 young adult dogs after administration of mannitol. The mean RI decreased significantly from baseline (P < .01). Additionally, left complete ureteral obstruction wasinduced in 5 dogs. Evaluation by Doppler ultrasonography was performed for 5 days. On the 5th day, Doppler examination was repeated at 30 and 60 minutes after administration of mannitol to obstructed dogs. After induction of left ureteral obstruction, the RI of the left kidney increased significantly over 5 consecutive days. Administration of mannitol decreased the RI in the nonobstructed contralateral kidneys, and thus the RI difference between obstructed and nonobstructed kidneys was increased above normal (P < .001). In conclusion, administration of mannitol may be useful as another diuretic agent to identify unilateral ureteral obstruction on Doppler sonographic examination.  相似文献   

Abnormal changes in both mandibular salivary glands in a dog: Non-mineral radiopaque sialoliths     

Hyun-Jung Suh  Dai Jung Chung  A-Jin Lee  Hyo-Jin Chung  Dae-Hyun Kim  Ki-Dong Eom  Sun Hee Do  Hwi-Yool Kim 《The Canadian veterinary journal. La revue veterinaire canadienne》2015,56(10):1025-1028

A 10-year-old Maltese dog was presented with a firm mass on the left side of his neck. Physical examination confirmed a firm mass in the left and a submandibular swelling in the right cervical region. Sialolithiasis and associated sialocele in both mandibular salivary glands were suspected and bilateral sialoadenectomy was performed. The stones were identified as non-mineral sialoliths.  相似文献   

Unusual congenital pulmonary anomaly with presumed left lung hypoplasia in a young dog     

C. M. Lee  J. H. Kim  M. H. Kang  K. D. Eom  H. M. Park 《The Journal of small animal practice》2014,55(5):274-277

A seven‐month‐old, entire, male miniature schnauzer dog was referred with acute vomiting, inappetence and depression primarily as a result of a gastric foreign body (pine cones). During investigations, thoracic radiographs revealed increased volume of the right lung lobes, deviated cardiomediastinal structures and elevation of the heart from the sternum. Thoracic computed tomography revealed left cranial lung lobe hypoplasia and extension of the right cranial lung parenchyma across the midline to the left hemithorax. Branches of the right pulmonary vessels and bronchi also crossed the midline and extended to the left caudal lung lobe. These findings suggested that the right and left lungs were fused. In humans this finding is consistent with horseshoe lung, which is an uncommon congenital malformation. To the authors’ knowledge, this case represents the first report of such a pulmonary anomaly in a dog.  相似文献   

Bright Spots, Structure, and Magmatism in Southern Tibet from INDEPTH Seismic Reflection Profiling   总被引：8，自引：0，他引：8  

LD Brown  W Zhao  KD Nelson  M Hauck  D Alsdorf  A Ross  M Cogan  M Clark  X Liu  J Che 《Science (New York, N.Y.)》1996,274(5293):1688-1690

INDEPTH seismic reflection profiling shows that the decollement beneath which Indian lithosphere underthrusts the Himalaya extends at least 225 kilometers north of the Himalayan deformation front to a depth of approximately 50 kilometers. Prominent reflections appear at depths of 15 to 18 kilometers near where the decollement reflector apparently terminates. These reflections extend north of the Zangbo suture to the Damxung graben of the Tibet Plateau. Some of these reflections have locally anomalous amplitudes (bright spots) and coincident negative polarities implying that they are produced by fluids in the crust. The presence of geothermal activity and high heat flow in the regions of these reflections and the tectonic setting suggest that the bright spots mark granitic magmas derived by partial melting of the tectonically thickened crust.  相似文献   

Giant piezoelectricity on Si for hyperactive MEMS   总被引：1，自引：0，他引：1  

Baek SH  Park J  Kim DM  Aksyuk VA  Das RR  Bu SD  Felker DA  Lettieri J  Vaithyanathan V  Bharadwaja SS  Bassiri-Gharb N  Chen YB  Sun HP  Folkman CM  Jang HW  Kreft DJ  Streiffer SK  Ramesh R  Pan XQ  Trolier-McKinstry S  Schlom DG  Rzchowski MS  Blick RH  Eom CB 《Science (New York, N.Y.)》2011,334(6058):958-961

Microelectromechanical systems (MEMS) incorporating active piezoelectric layers offer integrated actuation, sensing, and transduction. The broad implementation of such active MEMS has long been constrained by the inability to integrate materials with giant piezoelectric response, such as Pb(Mg(1/3)Nb(2/3))O(3)-PbTiO(3) (PMN-PT). We synthesized high-quality PMN-PT epitaxial thin films on vicinal (001) Si wafers with the use of an epitaxial (001) SrTiO(3) template layer with superior piezoelectric coefficients (e(31,f) = -27 ± 3 coulombs per square meter) and figures of merit for piezoelectric energy-harvesting systems. We have incorporated these heterostructures into microcantilevers that are actuated with extremely low drive voltage due to thin-film piezoelectric properties that rival bulk PMN-PT single crystals. These epitaxial heterostructures exhibit very large electromechanical coupling for ultrasound medical imaging, microfluidic control, mechanical sensing, and energy harvesting.  相似文献   

Classification of the conductance of moisture through wood cell components     

Yeonjung Han  Jun-Ho Park  Yoon-Seong Chang  Chang-Deuk Eom  Jun-Jae Lee  Hwanmyeong Yeo 《Journal of Wood Science》2013,59(6):469-476

This study aimed to clarify the conductance of moisture through wood cell components. Moisture diffusion coefficients were determined from three models (Stamm, Siau, and Kang et al.) and cell wall, pit, and ray dimensions were experimentally observed in a wood specimen. Fractions of moisture diffusing along each path in each of the models were analyzed. As moisture content decreased, the fraction of water diffusing as bound water through cell walls in tangential and longitudinal directions decreased while water vapor diffusion through lumens and pits became more dominant. Diffusion coefficients predicted by each model were compared with experimental values. Although predicted values differed from experimental values, predicted trends for diffusion rate dependence on moisture content were similar to the experimental results. In particular, the models of Stamm and Kang et al., which consider moisture transport through rays and pits, show a very consistent trend for transverse diffusion, which is always faster radially than tangentially. Input of more accurate dimensions of cell walls and cavities into the models should result in more reliable values, closer to the experimentally determined diffusion coefficients.  相似文献   

Fungal disease in reptiles     

CJ Harvey  KD McSporran  RM Jakob-Hoff  JS Potter  SD Shaw 《New Zealand veterinary journal》2013,61(2)

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Myophosphorylase deficiency (glycogen storage disease Type V) in Charolais cattle     

RD Jolly  KD McSporran  AC Johnstone 《New Zealand veterinary journal》2013,61(1)

Extract

Myophosphorylase deficiency (glycogen storage disease Type V) has been diagnosed in Charolais calves in New Zealand. It is manifested as exercise intolerance and recumbency, usually at several weeks of age, due to an inability to mobilise glucose, as glucose phosphate, from glycogen. Affected calves may rise and walk after a rest to again become affected on further exercise. There is rhabdomyolysis and after repeated or severe attacks the calf may remain recumbent and need to be euthanised. The mutant phosphorylase gene has been described. We have established a PCR-RFLP test based on a published method, and have confirmed the diagnosis in affected calves and heterozygous status of sires, dams and other related individuals belonging to an extended family. In addition, several other non-related heterozygotes have been identified in that and another herd. There appears to have been importations of the gene from both England and America.  相似文献