• 대한약학회:학술대회논문집
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• 대한약학회 2001년도 Proceedings of the Pharmaceutical Society of Korea
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• pp.162.3-163
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• 2001

• 한국가축번식학회지
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• 제21권3호
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• pp.211-217
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• 1997

This experiment was carried out to determine the possibility of using FDA on the selection of viable bovine immature oocytes. The results obtained in these experiments were summarized as follows; 1. The rates of nuclear maturation (metaphase II) of bovine oocytes according to FDA concentration were 92.5% (37/40) in the control and those rates in the dilution on FDA to 1:400,000, 1:800,000 and 1:1,600,000 were 74.4% (67/90), 80.3% (38/46) and 71.1% (32/45), respectively. 2. The fertilization rate ( 2-cell) in the control was 72.2% (39/54) and those rates in the dilution of FDA to 1:400,000, 1:800,000 and 1:1,600,000 were 28.8% (23/80), 66.7% (32/48) and 62.2% (28/45), respectively. In these results, a, pp.opriate concentration of FDA to bovine immature oocytes was 1:800,000. 3. Effect of FDA treatment to the blastocyst development of bovine oocytes was indicated that control was 22.2% (18/81) and FDA treatment groups which were classified to strong, partial and weak were 21.4% (36/168), 14.5% (9/62) and 0% (0/15), respectively. This result suggested that in vitro development to the blastocyst was severely reduced except strong group according to the FDA fluorescent level (P<0.05) and that using FDA is possible to select of bovine oocytes.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2003년도 춘계학술대회
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• pp.98-99
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• 2003

• 대한약학회:학술대회논문집
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• 대한약학회 2001년도 Proceedings of the Pharmaceutical Society of Korea
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• pp.143.2-143.2
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• 2001

• 경영정보학연구
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• 제26권1호
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• pp.289-313
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• 2024

한국의 제약 및 바이오·헬스케어 기업들은 2000년대 초부터 FDA 승인을 신청하기 시작했다. 제약회사들은 국내 시장에서 제품을 판매하기 위해 의무적으로 FDA 승인을 받을 필요가 없으며, 승인 과정에 있어 많은 자원을 필요로 한다. 따라서 FDA 승인을 받기위한 투자는 합리적으로 보이지 않는다. 본 연구는 사건연구(event study) 방법론을 활용하여 유가증권 시장 및 코스닥 시장에 상장된 제약 및 바이오·헬스케어 기업들의 주가에 대한 FDA 승인 공시의 정보 효과를 분석하였다. 연구 분석결과에 따르면, FDA 승인 공시에 대한 정보효과가 한국 주식 시장에서 작동하여 해당 기업의 주가를 유의하게 상승시키는 것으로 나타났다. 이는 미국 FDA 승인이 한국 제약 및 바이오·헬스케어 기업의 가치를 제고시키는 효과가 있다는 것을 시사한다. 또한, 중견 및 대기업보다는 중소기업에서, 코스피 시장보다는 코스닥 시장에서, 주가의 가격제한폭이 좁을 때 보다는 확대된 이후에 주가에 정보효과가 더 크게 반영되어 나타났다. 그리고 전통적인 제약산업보다는 바이오·헬스케어 산업인 경우, FDA 승인 공시에 주가는 더 민감하게 반응하는 것을 알 수 있다. 이상의 결과를 토대로 FDA 승인을 얻는 것이 기업의 주가에 긍정적 영향을 미친다는 것을 알 수 있었으며, 국내 기업들의 FDA 승인 신청이 고위험을 감수하며 높은 수익을 노리는 합리적인 투자에 해당함을 제시한다.

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2002년도 Molecular and Cellular Response to Toxic Substances
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• pp.204-204
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• 2002

• 한국환경성돌연변이발암원학회:학술대회논문집
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• 한국환경성돌연변이발암원학회 2003년도 춘계학술대회
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• pp.96-97
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• 2003

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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• pp.142.2-143
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• 2002

• Macromolecular Research
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• 제11권3호
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• pp.157-162
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• 2003

6FDA-based polyimides were prepared from the thermal imidization reaction of 6FDA with diamines of BAPAF, DAP, and DABA having a polar group of hydroxyL or carboxyl. Properties of the dense polyimide membranes were characterized and their gas permeation properties for H$_2$, $CO_2$, $O_2$, $N_2$, and CH$_4$ were investigated. Permeabilities, diffusion coefficients and diffusivity selectivities of polar group-containing polyimide membranes including 6FDA-BAPAF, 6FDA-DAP, and 6FDA-DABA polymer for the gases did not change largely. The separation properties of 6FDA-TrMPD polyimide membrane used as a reference polymer were compared with those of the polyimide membranes mentioned above. It was found that the polyimides of 6FDA-BAPAF, 6FDA-DAP, and 6FDA-DABA, which were soluble in alcohol or/and 2-methoxyethanol, could be applicable to the preparation of a dense composite membrane by dip-coating method.

• 한국가축번식학회지
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• 제18권1호
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• pp.55-62
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• 1994

This study was carried out to test the effects of fluorescein diacetate(FDA 0${mu}ell$/ml, 0.5${mu}ell$/ml, 5${mu}ell$/ml, 10${mu}ell$/ml or 0${mu}ell$/ml, 5${mu}ell$/ml in PBS) treated before culture on the survival of vitrified mouse morulae in vitrification solution(20% glycerol＋glycerol＋10% ethylene glycol＋30% ficoll＋10% sucrose). The results were summarized as follows; 1. The survival rate of FDA-tested fresh mouse morulae after 24 hours culture was over 96%((P4.8) in the control or treatment groups with various levels of FDA. Because the rate of mouse morulae which developed to hatched blastocysts was higher with the various levels of FDA treatment(67%) than control(50%), it was considered that toxicity of FDA did not affect the survival of mouse morulae. 2. When mouse morulae were FDA-tested in FDA 0(control), 0.5, 5, and 10${mu}ell$/ml treatment after vitrification, the development rate to expanded blastocyst were 66, 82, 64 and 76%, and FDA scores were P4.2(84%), P4.7(94%), P4.2(84%) and P3.9(78%), respectively. There were no significant differences between control and FDA treatments, but there were significant difference between 0.5${mu}ell$/ml)94%) and 10${mu}ell$/ml(78%) treatment(P<0.01). 3. The survival rates of cultured mouse morulae according to FDA-scores(P0=non-fluorescence; P1~P5=according to their fluorescence) after vitrification were P5;92%, P4;67%, P3;42% and P2.P0;0%, respectively. 4. Implantation rates of morulae stage embryos cultured into early blastocysts and implanted into uterine hornes vitrification were 14 and 11% embryos treated control(0${mu}ell$/ml) and FDA 5${mu}ell$/ml and the normal fetus development was 2% embryos for both treatments. Results of this percent study indicated that toxicity of FDA does not affect not only the survival of fresh and vitrified mouse morulae but also the development rate and implantation of fetus after transfer as well. The development rates of mouse morulae with the FDA score of P5, P4 and P3 were 92, 67 and 42%, respectively, it was considered that FDA-test was fit for the judge of survival.