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Correction of Atlanto-axial Instability by Avulsion Fracture of the Axis in a Dog
황용현,김민경,박정현,진소영,박기태,이희천,이재훈 한국임상수의학회 2013 한국임상수의학회지 Vol.30 No.6
An eight-year-old, castrated male, Poodle dog was presented with a bite wound in the neck region. Clinical examination revealed non-ambulatory signs of tetraparesis with deep pain, and upper motor neuron changes in all limbs. Fractures of the transverse process of C1 and the dorsal spinous process of C2 were observed on the radiographs and the computed tomography (CT). Conservative therapy was performed for 1 week. However the neurological problems were not alleviated until 7 days after injury. The owners agreed to perform surgical stabilization. The surgical stabilization was performed 7 days after presentation. Ventral stabilization was performed with screws, K-wires and bone cement. The dog stood up independently after 4 weeks and was able to walk 6 weeks postoperatively. In this report we suggest that using combined stabilization techniques are effective for this type of cervical fracture in which the dorsal and ventral structures of the vertebra are severely disrupted.
Prostatic Adenocarcinoma in a Schnauzer Dog
황용현,최우,김나현,서정향,이재훈 한국임상수의학회 2012 한국임상수의학회지 Vol.29 No.3
An eight-year-old, castrated male, a Schnauzer dog was presented with dysuria, hematuria and intermittent vomiting. Retrograde positive contrast urethrography was performed under fluoroscope. On the contrast examination,the leakage was observed in the prostatic urethra region and irregular filling defect was also shown from the prostatic urethra and the level of the trigon of the bladder. Surgical treatment was selected because of partial urethral obstruction and dysuria. The metastasis at the time of surgery was suspected, and the owner decided euthanasia. We detected lymph metastasis with immunohistochemical staining for pan-cytokeratins (CK) AE1/AE3, confirming their epithelial origin. This report described typical clinical findings, diagnostic imaging and histopathological examination of a prostatic adenocarcinoma.
갑각류인 꽃게 껍질을 이용한 키틴 / 키토산의 제조에 관한 연구
황용현,정덕채 한국유화학회 1998 한국응용과학기술학회지 Vol.15 No.1
Chitin/chitosan be known as biodegradable natural polymer. However, commercial use of chitin has been limited due to highly resistance to chemicals and the absense of proper solvents. Therefore, we was studied that chitin was prepared by the application of Hackman's method from Protunus trituberculatus shells. And another viscosity chitosan were prepared from chitin which were deacetylated under various concentration of alkali, reaction time and temperature by the application of Mima's method. And crosslinked chitin/chitosan was preparaed from chitin/chitosan with crosslink agent followed by crosslinkage, The major parmeters for chitosan manufacturing methods were found to be concentration of alkali solution, reaction time and temperature etc. The effects of these parameters on chitin, another viscosity(molecular weight) chitosan and crosslinked chitin/chitosan were investigated by various analysis apparatus.