액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구

임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.

産褥期 感染 誘發 細菌의 生育을 억제하는 韓藥材 探索에 關한 硏究

임재연,성연수,김희진,이태균 동국대학교 한의학연구소 1997 東國韓醫學硏究所論文集 Vol.6 No.1

産褥期 感染이란 分娩後 生殖器의 細菌에 의한 感染을 意味하며, 産後 體溫上昇의 大部分은 骨盤感染에 의한 것으로 産褥期 感染의 重要한 指漂가 된다. 한의학에서 産後發熱의 病因病耭는 주로 邪毒感染, 血瘀, 外感, 血虛 등으로 보았으며, 치료는 一般的으로 産後疾患에는 處證이 많아 發表攻裏를 過度하게 하지 않고, 氣血과 營衛의 調和에 위주로 하나, 外感과 裏實證을 疏怒히 하면 안된다. 따라서 産後發熱을 惹起하는 各種 原因菌에 對한 客觀的인 抑制效果의 檢證은 産後發熱의 治療率을 높이는데 중요하다. 그 결과 산욕기감염을 유발하는 各種 細菌에 對해 黃連, 烏梅, 五味子 등의 水溶性 抽出物이 杭菌活性이 相對的으로 좋은 效果를 보였다. 따라서 産褥期 感染의 治療에 이들 韓藥材를 이용하면 보다 效果的일 것으로 생각된다. Deparment of Oriental Medicine, Graduate School of Dongguk University, Major in Oriental Ob & Gy. Various kinds of medicinal herbs and prescribed herb medicines which have usually been used for treatment of reducing fever, purging intense heat, and detoxication were secreened for antibacterial activity against Proteus vulgaris, S. aureus, and E. faecalis which causing puerperal infection. Minimal inhibitory concentrations of water- and ethanol-soluble extracts of Hwangyon(C. japonica), Omae(P. mume), and Omiza(S. chinensis) were determined and using thin-layer chromatography the extracts of Hwangyon and Omiza were separated. The results obtained were as follows: 1. The water-soluble extracts of Keumeunhwa(L. japonica), Chiza(G. jasminoides), Hwangyon(C. japonica), Dansam(S. miltiorrhiza), Omae(P. mume) and Omiza(S. chinensis) showed antibacterial activities against P. vulgaris ; among them, the extracts of Hwangyon, Omae, and Omiza showed high antibacterial activities. The water-soluble extracts of Keumeunhwa(L. japonica), Hwangyon(C. japonica), Hwangkeum(S. baicalensis), Hwangbaek(P. amurense), Dansam(S. miltiorrhiza), Daehwang(R. coreanum), Omae(P. mume), Omiza(S, chinensis), Gingseng(P. ginseng), and Gamcho(G. uralensis) showed antibacterial activities against S. aureus ; among them, the extracts of Hwangyon and Omiza showed high antibacterial activities. The water-soluble extracts of Banggi(C. trilobus), Daehwang(R. coreanum), Omae(P. mume), Omiza(S. chinensis), and Gamcho(G. uralensis) inhibited the cell growth of E. faecalis ; among them, Omae and 0miza showed high antibacterial activities. The extract of Hwangyon(C. japonica) and Omae(P. mume) showed no inhibition against E. coli. However, the extract of Omiza(S. chinensis) inhibited cell growth of both E. coli and B. subtilis. 2. The water- and ethanol-soluble extract of Hwangyon(C. japonica) showed antibacterial activities against P. vulgaries and S. aureus, those of Omae(P. mume) against P. vulgaris and E. faecalis, and those of Omize(S. chinensis) against all species tested, P. vulgaris, S. aureus, and E. faecalis. With the exception that ethanol-soluble extract of Hwangyon(C. japonica) showed much higher antibacterial activity against S. aureus than water-soluble one, antibacterial activities of both water- and ethanol-soluble ones were similar to each of other two medicinal herbs. 3.When the prescribed herb medicines were tested, Sambohwan showed antibacterial activities against P. vulgaris and S. aureus. No prescribed herb medicine inhibited the cell growth of E. faecalis. 4. Minimal inhibitory concentrations(MICs) of both water- and ethanol-soluble extracts of Hwangyon (C. japonica), Omae(P. mume), and Omiza (S. chinensis) against P. vulgaris were 2.5㎎/㎖, 10㎎/㎖, and 20㎎/㎖, respectively. Those of both Hwangyon (C. japonica) and Omiza(S. chinensis) against S. aureus were 1.25㎎/㎖ and 10㎎/㎖, respectively. MICs of water-soluble extracts of Omae(P. mume) and Omiza(S. chinensis) aganist E. faecalis were 2.5㎎/㎖ and 5㎎/㎖, and those of ethanol-soluble extracts were 5㎎/㎖ and 10㎎/㎖, respectively. Except for those of E. faecalis, the cell growth of P. vulgaris and S. aureus were inhibited by much lower concentration of ethanol-soluble extracts used. As a result, the antibacterial compounds against P. vulgaris, S. aureus, and E. aecalis are contained in the extracts of Hwangyon(C, japonica), 0mae(P. mume), 0miza(S. chinensis), the prescribed herb medicine, Sambohwan, and might be used for treatment of puerperal infection. Further study should be carried out to identify which compounds affect the cell growth inhibition of P. vulgaris, S. aureus, and E. faecalis.

한국판 정신사회재활 성과 측정도구의 신뢰도 및 타당도 연구

황태연,강대엽,임영란,김명식,이원혜,박용범 용인정신의학연구소 1999 용인정신의학보 Vol.6 No.2

신규개발된 제초제 metamifop 현탁농축액제에 대한 급성독성평가

이동연,이상훈,백경진,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Metamifop, (R)-2-[4-[(6-chloro-2-benzoxazolyloxyphenoxy]-N-(2-fluorophenyl)-N-methyl propanamide, was newly developed by Dongbu Hannong Chemicals in Korea. In the present study we conducted acute oral toxicity and acute dermal toxicity test. The values of LD_(50) of metamifop was found to be over 5,000 mg/kg for ICR mice. On the other hand, metamifop showed no acute dermal toxicity to SD rats.

참외 흰가루병에 대한 살균제의 예방 및 치료효과 검정

장태현,류연주,임혜정,임수진,최미영,정병룡,김철웅,이용세 한국환경농학회 2006 한국환경농학회지 Vol.25 No.1

목련과 수종과 부위에 따른 견직물의 천연염색변이

박재인,연방희,최태호,이은경,임선희,김홍은,조남석,김태동 忠北大學校 農業科學硏究所 2003 農業科學硏究 Vol.20 No.-

In order to establish a dyeing method with Magnoliaceae tree species dyeing was examined with 4 different parts, leaf, stem bark, root, flower of 4 Magnohaceae species, Magnolia kobus Dc., Magnolia denudata Desr, Magnolia obovata Thunb, Liriodendron tulipifera L Mordants used were chemicals, AIK(SO_4)_2 24H_2O, Ca(OH)_2, FeSO_4 7H_2O. All four species showed similar coloring among four different parts. Leaves and petals showed dark yellow, stem bark, grayish yellow, root bark, dark red or yellow. Al mordant made more brighter colour than Fe mordant. Stem bark showed less difference in color by mordants, whereas petals did the biggest.

소아의 상부 요관확장증에서 폐쇄 유무 감별에 있어 Tc-99m DTPA 이뇨 신장 신티그램의 유용성

한성태,이재문,손형선,임계연,양기라 대한핵의학회 1999 핵의학 분자영상 Vol.33 No.1

Purpose: The purpose of this study was to evaluate the accuracy of Tc-99m DTPA diuretic renal scans in children upper urinary tract. Materials and Methods: We reviewed diuretic renal scans of 14 pediatric patients (age range: 3 days to 4 years) with unilateral hydronephrosis diagnosed by ultrasonography. Diuretic renal scan was done using Tc-99m DTPA and standardized protocol. In 3 neonates, diuretic renal scans were performed within 1 week and 3-7 months after birth. Results: Six patients required pyeloplasty and eight were managed conservatively. All 6 patients requiring pyeloplasty were diagnosed as having ureteropelvic junction obstruction in the diuretic renal scan. In these 6 patients, post-operative renal scans at 3-12 months after surgery were converted to nonobstructive pattern in 5 and a nonobstructive patterns in 1. In 3 patients who underwent diuretic renal scan within 1 week after birth., nonobstructive patterns of initial scan were coverted to obstructive patterns in the follow-up scan. However, all patients with nonobstructive diuretic renal scans performed after the neonatal period did well on serial ultrasonography and showed favorable clinical outcome without progression to obstruction. Conclusion: Tc-99m DTPA diuretic renal scan with standarized protocol is useful in assessing suspected ureteropelvic junction obstruction in children as an initial diagnostic or post-operative follow-up modality. Nonobstructive or indeterminate scan results in the neonatal period requires follow-up scan to monitor development of the obstructive pattern.

Pyriminobac-methyl과 azimsulfuron 합제의 신규제형인 분산형 정제에 대한 독성 평가

백경진,이동연,이상훈,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Dispersible tablets disintegrate either to form a stabilized suspension rapidly in water, or to disperse instantaneously in the rice field without the aid of water. In this study, the newly formulated dispersible tablet form of herbicidal combination, pyriminobac-methyl and azimsulfuron, was evaluated the safety for human and animals in the toxicological viewpoints. The LD_(50) value of dispersible tablet form for pyriminobac-methyl and azimsulfuron was above 2,500 mg/kg for the oral route and above 2,000 mg/kg for the dermal route. It is considered to have low acute oral and dermal toxicity based on the findings of the present studies. In addition, the combination of pyriminobac-methyl and azimsulfuron showed mild skin irritant under the conditions of this study and conjunctival redness and slight opacity on cornea appeared from 1 hour after application.

神門穴 鍼刺戟이 母性分離 스트레스로 야기된 攝食 障碍와 시상하부 neuropeptide Y 발현에 미치는 영향

박히준,류연희,홍미숙,김승태,임사비나 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2003 東西醫學硏究所 論文集 Vol.2003 No.-

Objective : The purpose of this study is to find out the effect of acupuncture at HT7(Shinmun) on the feeding behavior and hypothalamic neuropeptide Y(NPY) expression in the maternally separated rat pups. Methods : To show the effect of acupuncture, we performed maternal separation(MS) for 7 days beginning on postnatal day 14, and observed body weight, food intake, and NPY immunoreactivity in the paraventricular nucleus(PVN) of hypothalamus after acupuncturing at HT7, the end of the transverse crease of the ulnar wrist of the forepaw. Results : MS induced a significant decreases in body weight and food intake, while acupuncture treatment at acupoint HT7 showed much more improvement in those evaluations. NPY-immunoreactivity in area PVN were decreased in the MS group, but significantly increased in the HT7 group. Conclusions : These findings suggest that acupuncture has an effect on the feeding disorders caused by MS, possibly by modulating NPY expression in the PVN.

Carbosulfan의 피부자극성, 안점막 자극성 및 피부감작성등의 알러지성 효과에 관한 연구

이상훈,이동연,백경진,김태원,정두순,임종환,김명석,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Many studies have been published on the human health effects of carbosulfan toxicity. Carbosulfan used as an insecticide can produce an irritating and allergenic effect when acting on the skin. In this study, a sensitization test on albino guinea pigs and intradermal reactivity and occular irritation test on albino rabbits were carried out with carbosulfan. Signs of acute skin inflammation appeared along with the clinical symptom of chronic dermatosis caused by the solution irritating characteristics. Moreover, carbosulfan showed severe eye irritation with conjuctival redness and severe opacity on cornea. Preventive measures should involve workers' obligatory instructions on the noxious impact on human skin and strict observance of industrial safety rules.