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(±)-Camphor가 ICR 마우스 수컷의 간 cytochrome P450 효소 활성에 미치는 영향
오은경,박형건,배기현,최옥진,최은경,최창근,한진희,정태천 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.4
Effects of (±)-camphor on liver cytochrome P450 enzymes were investigated in male ICR mice. Mice were treated intraperitoneally with 0, 200, 400 and 800 mg/kg of (±) -camphor in corn oil for 3 consecutive days. Twenty four hr after the final treatment, the animals were subjected to necropsy. The activities of serum aspartate aminotransferase and serum alanine aminotransferase were slightly changed by the treatment with (±)-camphor at the doses used. Administration o(±)-camphor to mice significantly induced the hepatic activities of pentoxyresorufin O-depentylase and benzyloxyresorufin O-debenzylase and weakly induced ethoxyresorufin O-deethylase in dose-dependent manners. The present results suggested that (±)-camphor might act as a relatively specific inducer of hepatic cytochrome P450 213 in male ICR mice.
Park, Hayng-Mi,Shin, Sang-Hyun,Ko, Jong-Min,Yi, Gi-Hwan,Nam, Min-Hee,Chung, Young-Soo,Chung, Won-Bok,Lee, Jai-Heon,Park, Seong-Whan Korean Society of Life Science 2004 생명과학회지 Vol.14 No.1
이소플라본의 함량이 매우 높은 것으로 알려진 국내 콩품종 신팔달로부터 2개의 유전자 IFS1 (SinIFS1)과 IFS2(SinIFS2)가 클로닝되었다. 유전자의 염기서열을 밝힌 후, 기존에 알려진 콩과의 다른 IFS 유전자들과 유전자 염기서열의 유사성을 비교 분석하였다. 유전자 SinIFS1은 전체 1,828bp의 nucleotide와 521개의 아미노산으로 이루어져 있었고 SinIFS2의 경우, 1912bp의 nucleotide와 521의 아미노산으로 이루어져 있었다. 두 유전자 모두 cytochrome P45O superfamily의 일원이었고, 상응하는 conserve된 motif들을 가지고 있었다. 콩과의 다른 식물에서 클로닝된 IFS들과의 염기서열비교에서는 매우 높은 염기서열 유사성(98% 이상)이 관측되었다. 유전자의 발현과 유발에 관한 노던분석 실험 결과, 무처리구로 사용한 암처리보다 모두 유발된 유전자의 발현을 나타났는데, 특히 곰팡이 elicitor 처리구의 경우, 무처리보다 6배 이상의 유전자 유발을 보였다. 그 다음으로는 자외선 처리가 높은 유전자 발현 유발효과를 나타내었고, 그 다음으로 저온과 명처리순으로 유발효과를 나타내었다. Two genes, SinIFS1 and SinIFS2 from Korean soybean cultivar, Sinpaldalkong known as one of isoflavonerich cultivars, were cloned with PCR and degenerate primers. The sequences of two genes were analyzed with previously reported IFS genes of leguminous plants and their expression pattern in various environmental conditions was surveyed. The genomic clone of SinIFS1 contained 1,828bp nucleotides and encoded a polypeptide of 521 amino acids, and 1912bp nucleotides and a polypeptide of 521 amino acids for SinIFS2. Both genes included several conserved motifs, oxygen binding and activation (A/G-G-X-E/D-T-T/S), ERR triad (E...R....R), and heme binding (F-X-X-G-X-R-X-C-X-G) domain, which are typical in any member of cytochrome P45O superfamily. Very high sequence homology (>98%) was observed in the comparison with other IFSs of legumes. In the northern blot analysis to check the expression and increase of SinIFS1 to various environmental renditions (low temperature, light, dark, UV, and fungal elicitor), the most significant induction, more than 6 times of transcript level compared to the dark treatment as a control, was observed from the fungal elicitor treatment. The next up-regulated expression was from UV treatment (4${\times}$), low temperature and light conditions.
박수헌,정인식,김부성,최명규,선희식,박두호,차상복,최규용,문윤기,채현석 대한소화기내시경학회 1995 Clinical Endoscopy Vol.15 No.3
Duodenal tumor is relatively rare disease, accounting for about 0.3% of all carcinomas of the gastrointestinal tract. Although radiological and endoscopic examinations have become popular, we are not so familiar with the duodenal tumors as those of the other gastrointestinal tumors. The absence of precise symptoms and the rarity of primary malignant neoplasms in this localization are frequently the reason for the late diagnosis. And so, often the true nature and localization of the tumor are only determined during surgery or autopsy. But, recently, duodenal bulb is examined with ease and pathologic diagnosis is possible following the diffusion of panendoscopy. We have experienced three cases of primary duodenal bulb carcinoma, which diagnosed by biopsies with gastrofibroscopic endoscopy. So we report the cases with a brief review of literature.
Quality Characteristics of Chicken Emulsion Sausages with Different Levels of Makgeolli Lees Fiber
Park, Kwoan-Sik,Choi, Yun-Sang,Kim, Hack-Youn,Kim, Hyun-Wook,Song, Dong-Heon,Hwang, Ko-Eun,Choi, Seul-Gi,Kim, Cheon-Jei Korean Society for Food Science of Animal Resource 2012 한국축산식품학회지 Vol.32 No.1
Makgeolli lees is a by-product of the makgeolli brew processing. Makgeolli lees contains high levels of fibers, which can be separated and used to develop foods rich in dietary fibers. The purpose of this study was to determine the effect of makgeolli fibers (0-4%) on proximate composition, caloric content, pH, color, cooking yield, textural profile, and sensory characteristics of chicken-emulsion sausages. The moisture content of 1, 2, and 3% makgeolli lees fiber-amended product was higher than the control, while that of the 4% product was not. Total calorie estimates of makgeolli lees fiber-amended sausages were lower than the control, except for in the case of the 4% treatment. Moreover, chicken sausages supplemented with makgeolli lees fiber had higher cooking yields and improved textural properties. Chicken emulsion sausages prepared with makgeolli lees fiber had improved overall acceptability, and the best results of sensory characteristics were obtained for the emulsion sausages containing 2% makgeolli lees fiber.
Park Ji Heon,Lee Gi Yong,Lim Ji Hyun,Yang Soo-Jin 한국미생물·생명공학회 2024 한국미생물·생명공학회지 Vol.52 No.1
Methicillin-resistant Staphylococcus aureus (MRSA) represents antimicrobial-resistant bacteria that can cause a wide range of illnesses both in humans and animals. Multidrug resistance phenotype is common, especially in healthcare-associated (HA) MRSA strains. Currently, one of the most prevalent HA-MRSA clonal lineages in Korean hospitals is sequence type (ST) 5 carrying staphylococcal cassette chromosome mec type II (ST5-SCCmec II). Here, we report the complete genome sequence of an ST5 HA-MRSA strain (SA492) originated from a patient in Korea.
Gi Heon Ha(하기헌),Hoang Vu Phan(판호앙부),Hoon Cheol Park(박훈철) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.4
The pulley-wire mechanism used in the flapping mechanism of the KUBeetle-S, which is a tailless insect-like flapping wing micro air vehicle(FW-MAV), has been replaced with a rack-pinion mechanism for relatively easier and simpler fabrication. We first have determined the gear ratio of the new mechanism, so that it can demonstrate a similar performance to that of the previous KUBeetle. The gear ratio of 30:1 is chosen after comparing the thrusts and lift-to-power ratios of the flapping mechanisms with various gear ratios. In addition, the attitude control mechanism for stable attitude control and maneuverability of the robot is designed based on the same Stroke-Plane-Change(SPC) mechanism used in the KUBeetle-S. The 17.5 g robot fabricated by integrating the modified flapping-wing mechanism and the attitude control mechanism is named KUBeetle-RP. In order to guarantee flight stability, through several flight tests, we have adjusted the gain value of the attitude control system based on the PD control. Finally, KUBeetle-RP demonstrates a stable hovering flight for about 7 minutes.