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윤화영,최희인,Youn Hwa-Young,Choi Hee-In 한국임상수의학회 1985 한국임상수의학회지 Vol.2 No.1
In order to establish a method predicting susceptible cows to the parturient syndrome, various serum chemical parameters (calcium, phosphorus, Ca/P, magnesium, cholesterol, total protein, albumin, globulin, A/G, total lipid, non-esterified fatty acid(NEFA) and aspartate aminotransferase(AST)) were measured during late pregnancy and their relationships with periparturient diseases were investigated during puerpural period. The results obtained were as follows : 1. The factors affecting the prediction of susceptible cows to parturient syndrome were calcium, magnesium, total protein, globulin, A/G ratio and total lipid at 30 day antepartum and the diagnosability was 70.7%. 2. In the experimental cows producing more than 21kg of milk per day, the factors affecting the prediction of susceptible cows to parturient syndrome were calcium, NEFA and A/G ratio at 30 day antepartum and the diagnosability was 66.7%. 3. In the experimental cows calved more than 3 times, the factors affecting the perdiction of susceptible cows to parturient syndrome were calcium, total protein, albumin and NEFA at 30 day antepartum and the diagnosability was 83.3%.
생분해성 iodophor microsphere 함유 유두침지 소독제의 건유기 젖소에서의 유방내 신규감염 예방 효과
황철용,김종민,윤화영,한박,한홍율,Hwang, Cheol-Yong,Kim, Jong-Min,Youn, Hwa-Young,Han, Bo,Han, Hong-Ryul 대한수의학회 2004 大韓獸醫學會誌 Vol.44 No.1
1% iodophor loaded microspheres of PLGA (Poly[DL-Lactide-co-Glycolide]) were prepared by solvent evaporation method and were applied to the cows on dry period for evaluating it's preventive effects on intramammary infections. The morphology of the microspheres were evaluated using scanning electron microscopy and their releasing patterns were investigated. On investigating idophor releasing patterns of the microsphere, burst releasing pattern was detected until 2 days after in vitro incubation and sustained releasing was observed until 4 weeks. In field trial of teat dipping solution containing idophor loaded microspheres in dry cows showed significant preventive effects of intramammary infection caused by S. aureus, S. agalactiae, coagulase negative Staphylococci and coliform bacteria (p<0.05).
Malassezia pachydermatis에 의한 개의 피부염 치료 증례
황철용,오태호,박선일,윤화영,한홍율,Hwang, Cheol-yong,Oh, Tae-ho,Pak, Son-il,Youn, Hwa-young,Han, Hong-ryul 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.5
A 4-year-old female American cocker spaniel was hospitalized with 6 months prolonged dermal problems in The Veterinary Medical Teaching Hospital of Seoul National University. Initial noticed signs by owner of this dog were rashes and papules on ear part and they were spreaded whole body. On initial physical examinations, papules, pustules, crusts, and erythema were presented on whole body. Diameters of focal scaly and erythematous alopetic lesions were varied ranging 1 to 4cm. Skin scraping for detecting ectoparasites and wood's light examinations for dermatophyte were negative. Any bacteria were not detected but Malassezia pachydermatis was detected on cytological examination and fungal culture. The dog was treated with Itraconazole (5mg/kg, q12h) and Cephalexin (20mg/kg, q12h) orally and then bathed with 2% chlorhexidine shampoo twice per week for 5 weeks. From 12 weeks after starting therapy, all dermal problems were disappeared although some mild pyoderma were once relapsed. Regular chlorhexidine bathing treatment so far has been continued for preventing recurrence.
사람의 피부상피세포에서 황색포도상구균의 독소인자인 Staphylococcal Protein A의 염증반응 촉진효과
권현진,김연정,장성희,배보경,윤화영,이희우,Kwon, Hyun-Jin,Kim, Yeon-Jung,Jang, Sung-Hee,Bae, Bo-Kyoung,Youn, Hwa-Young,Lee, Hee-Woo 한국미생물학회 2011 미생물학회지 Vol.47 No.4
Staphylococcus aureus is a major human pathogen that is associated with various types of local and systemic infection. Staphylococcal protin A (SPA), a highly expressed surface component of S. aureus, may have a role in virulence such as activating inflammation and interfering with immune clearance. We examined the effect of recombinant SPA on inflammatory response in human HaCaT keratinocytes. The recombinant SPA protein was prepared using the pET-28a Vector System in Escherichia coli. The expression of pro-inflammatory related adhesion molecules and cytokines in HaCaT cells incubated for 6, 12, and 24 h with SPA (2 ${\mu}g$/ml) was analyzed by comparative RT-PCR or ELISA. The expression of E-selectin, ICAM-1, MCP-1, IL-6 and IL-8 was significantly increased in HaCaT from 6 to 24 h after treatment with SPA. SPA showed the effect on the adhesion-promoting ability of U937 monocytes to HaCaT cells. Our data demonstrate that SPA stimulates inflammatory response of HaCaT cells, implicating an important factor for exacerbation of skin inflammation of immunologic disease. 황색포도상구균은 사람에게서 염증을 동반한 다양한 형태의 국소적 또는 전신적 감염을 일으키는 주요 병원균이며, 황색포도상구균에서 풍부하게 발현되는 Staphylococcal protein A (SPA)는 염증의 활성화나 면역 반응의 회피와 관련된 균력인자로서 작용할 수 있다. 본 연구에서는 사람의 HaCaT 피부상피세포에서 재조합 SPA 단백질을 이용하여 염증반응에 대한 효과를 조사하기 위해서 pET-28a 발현벡터시스템을 이용하여 성공적으로 재조합 SPA 단백질을 제작하였고, 이 단백질(2 ${\mu}g$/ml)을 6, 12 및 24시간 처리한 HaCaT 피부상피세포에서 RT-PCR 및 ELISA를 이용하여 염증관련 부착인자 및 사이토카인의 발현을 분석하였다. SPA 처리 후 6시간에서 24시간까지 E-selectin, ICAM-1, MCP-1, IL-6 및 IL-8의 발현이 현저하게 증가함을 확인하였다. 또한 SPA는 HaCaT 피부상피세포에 대한 U937 단핵구의 부착력을 증진시켰다. 따라서, 본 연구의 결과는 SPA가 HaCaT 피부상피세포의 염증반응을 촉진시킨다는 사실을 보여주었으며, 황색포도상구균에 의한 피부염증질환에 있어서 중요한 병원성인자로서의 역할을 수행한다는 사실을 시사해준다.
강민수,권효정,박미선,윤화영,한만길,김대용,Kang, Min-Soo,Kwon, Hyo-Jung,Park, Mi-Sun,Youn, Hwa-Young,Han, Man-Gil,Kim, Dae-Yong 대한수의학회 2004 大韓獸醫學會誌 Vol.44 No.4
A 13-year-old female Miniature Pincher was euthanized after suffering from respiratory insufficiency and seizure. At necropsy, firm tan masses approsimately 4 to 5 cm in diameter were noted at the right caudal love and left cranial lobe of the lung. On cross sections of the cerebellum and the verebrum, several compressive firm round masses, 0.5 to 1 cm in diameter, were noted. similar looking nodules were also present in the mediastinal lymph nodes. Histopathologically, the neoplastic masses consisted of cuboidal shape epithelial cells that form glandular structure. The neoplastic cells have hyperchromatic nuclei with prominent nucleoli and moderate amount of cytoplasm. The degree of mitosis was high (4-6/400X). Multiple areas of necrosis, hemorrhage, and tumor emboli were also noted. Metastasis to the mediastinal lymph nodes, pancreas, and brain was confirmed. Based on the gross and histopathologic examinations, a diagnosis of primary metastatic pulmonary adenocarcinoma was made. Clinicaly recognized neurological signs were therefore due to brain metastasis.
개에서 실험적으로 유발시킨 급성 췌장염에 있어서 혈액화학치와 췌장의 초음파학적 변화
윤영민,박수진,윤정희,윤화영,최희인,Yun, Young-min,Park, Su-jin,Yoon, Jung-hee,Youn, Hwa-young,Choi, Hee-in 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.2
In acute pancreatitis group, all the dogs are showed increase of amylase and lipase after the 1st day of surgery, and amylase and lipase activity were significantly more increased than those of control group. The methemalbumin was increased significantly after the 2nd day of surgery in the acute pancreatitis group. In pancreatitis group, ultrasonographic findings included thickened duodenal wall and poorly circumscribed hyperechoic lesion of pancreatic mass after the 2nd day of surgery. And the lesion was exacerbated until the 4th day and reduced after the 6th day of surgery. To identify the lesion of pancreas, it is considered that transverse view is more useful Than sagittal view. Gross findings showed increase of pancreatic parenchymal consistency, surface nodule, and extensive pancreatic necrosis. Necrosis of peripancreatic fat tissue was also a prominent feature. The microscopic appearance of the pancreas was characterized by pancreatic acinar cell necrosis, hemorrhage, infiltration of the inflammatory cell and fat necrosis and saponification were also observed.
Microsatellite 대립유전자 분석을 통한 개에서의 친자감별
채영진,김동근,김하나,이문한,황우석,이병천,윤화영,이항,Chae, Young-jin,Kim, Dong-keon,Kim, Hana,Lee, Moon-han,Hwang, Woo-suk,Lee, Byoung-chun,Youn, Hwa-young,Lee, Hang 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.1
Microsatellite allele analysis has been used for individual identification and paternity test. In the present study, the biological father of three puppies was determined by using microsatellite allele amplification analysis. The mother bitch of the litter was a Poongsan dog. The three stud dogs that could have inseminated the bitch, by being in the same residence, were a white Poosan dog, a mixed breed, and a white Jindo dog. DNA was obtained from all the relevant dogs by buccal swabbing. Four loci of tetranucleotide repeat microsatellite were PCR-amplified, and analyzed by polyacrylamide gel electrophoresis and silver staining. The results of genotyping unambigously assigned the Poongsan dog as the biological father. There was no evidence of superfecundation. Therefore, the present study demonstrated the usefulness of microsatellite allele analysis as a simple, efficient method of paternity test in dogs.
서경원,이종복,지향,이소라,권태억,김대용,윤화영,이창우,Seo, Kyoung-won,Lee, Jong-bok,Jee, Hyang,Lee, So-ra,Kwon, Tae-uk,Kim, Dae-yong,Youn, Hwa-young,Lee, Chang-woo 대한수의학회 2007 大韓獸醫學會誌 Vol.47 No.4
A 2-year-old spayed female ferret with the clinical signs of diarrhea and anorexia for about 8 days was presented to Hansung animal hospital. The diarrhea was black and paste form. Three palpable abdominal masses were detected in physical examination. By cytologic examination using fine need aspiration, the patient was tentatively diagnosed as lymphoma. Chemotherapy was started with prednisone, vincristine and cyclophosphamide. However, the client requested stopping the therapy at day 18 and the ferret was euthanized. Autopsy was performed and the masses were confirmed as lymphoma by histopathology. Microscopically, the mass consisted of unencapsulated and infiltrative neoplasm consisted of closely packed monomorphic round cells and also ininvasive lesions observed in duodenum. On the higher magnification, pleomorphic neoplastic cells with distinct cell border and abundant eosinophilic cytoplasm were observed. Finally, the ferret diagnosed as alimentary lymphoma.