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- 저자 : Hwan-yul Yong(용환율) (검색결과 3 건)
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난포크기 및 난자직경과 관련된 한우 체외배양 난자의 핵성숙에 관한 연구
용환율,김현일,이은송,이병천,황우석,Yong, Hwan-yul,Kim, Hyun-il,Lee, Eun-song,Lee, Byeong-chun,Hwang, Woo-suk 대한수의학회 1996 大韓獸醫學會誌 Vol.36 No.4
The present study was undertaken to establish a relationship between bovine follicle size and oocyte diameter, compare the nuclear maturation competence of oocytes of different diameter groups and the nuclear maturation changes in Korean Native Cattle according to in vitro maturation period. To compare the relationship between follicle size and oocyte diameter, follicles were dissected, measured, and assigned to one of the following size categories($4{\geq}mm$, 3-4mm, 2-3mm, 1-2mm, and < 1mm), investigate the maturation competence in the different-sized oocytes, which were divided into three groups( < $110{\mu}m$, 110 - < $120{\mu}m$, and ${\geq}120{\mu}m$). Oocytes were cultured in the culture medium during 0, 6, 12, 18, and 24hrs, respectively, stained, and measured the nuclear maturation degree according to period. When compared the relationship between follicle size and intrafollicular oocyte diameter, oocyte diameters of three groups of ${\geq}3mm$ follicle-sized were significantly higher than < 3mm (p<0.01). After in vitro maturation, the rates reached to MI stage of < $110{\mu}m$ oocyte groups(25%) was higher than $110-120{\mu}m$ and ${\geq}120{\mu}m$ oocyte groups(11 and 10%) reached to the same stage(p<0.01), and the rates throughout MII stage of $110-120{\mu}m$ and ${\geq}120{\mu}m$ and < $110{\mu}m$(70 and 76%) groups were higher than < $110{\mu}m$(35%)(p<0.01). When nuclear maturation rates were measured according to period, < 6hr groups(7 and 10%) showed lower rates reached to MI than ${\geq}12hr$ groups(100%), 24hr groups(76%) revealed higher rates throughout MII than 18hr groups(40%). These results indicate that the preparation of oocyte for the production of in vitro fertilization embryos and nuclear transplantation ones could be adapted, as follicle increased up to appointed size there was a corresponding increase in oocyte diameter, and differences of nuclear maturation rate revealed according to oocyte diameter and maturation period.
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Identification and antimicrobial susceptibility of bacteria from the uterus of bitches with pyometra
이소현,조종기,신나리,김혜수,용환율,이강남,유한상,이병천,황우석,Lee, So-hyun,Cho, Jong-ki,Shin, Na-ri,Kim, Hye-soo,Yong, Hwan-yul,Yoo, Han-sang,Lee, Kang-nam,Lee, Byeong-chun,Hwang, Woo-suk The Korean Society of Veterinary Science 2000 大韓獸醫學會誌 Vol.40 No.4
본 연구는 1998년부터 1999년까지 서울대학교 수의과대학 부속동물병원에 내원한 개중 자 궁축농중으로 진단된 개의 자궁내용물로부터 균을 분리, 동정하고 항생제 감수성 검사를 실시하여 개 자궁축농증 치료를 위한 기초 자료로 사용하고자 하였다. 위 병원에 내원하여 자궁축농증으로 진단된 개는 16두였으며, 이들로부터 자궁적출술을 이용하여 자궁을 적출한 후 원인균을 분리하였고, 분리된 균에 대하여 15종의 항균제에 대하여 감수성 검사를 실시하였다. 16두의 개로부터 분리된 균은 Escherichia coli 11주, Serratia marcescens 2주, Staphylococcus aureus 및 Salmonella spp 각 l주 씩 이었다. 이들 균주들에 대하여 항균제 감수성 검사를 실시한 결과, 대부분의 균주들이 enrofloxacin, norfloxacin, chloramphenicol, nalidixic acid, gentamicin, Trimethprim-sulfamethazole, tetracycline에 대하여는 높은 감수성을 나타내었고, carbenicillin, amikacin, ampicillin, neomycin에 대하여는 중등도의 감수성을 나타내었으나, vancomycin, streptomycin, bacitracin, colistin에 대하여는 저항성을 나타내었다. This study was performed to isolate and identify bacteria from uterus with pyometra and examine their susceptibility to antimicrobial agents. Uterus of 16 bitches with pyometra were surgically removed by ovariohysteroctomy and then bacteria were isolated and identified. Also, susceptibility test to 15 antimicrobial agents was performed. Out of 16 bitches, 11 strains of Escherichia coli, 2 strains of Serratia marcescens, and 1 strain of Staphylococcus aureus and Salmonella spp. were identified. In antimicrobial susceptibility test, the majority of isolates were susceptible to enrofloxacin, norfloxacin, chloramphenicol, nalidixic acid, gentamicin, trimethprim-sulfamethazole, tetracycline, and moderately susceptible to carbenicillin, amikacin, ampicillin, neomycin, but resistant to vancomycin, streptomycin, bacitracin and colistin. In conclusion, E coli was the most common bacteria isolated from bitches with pyometra and those susceptible antimicrobial agents could be recommended to medical therapy of pyometra.
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