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Chrysene이 BALB/c계 마우스의 면역기능에 미치는 영향
전태원,김춘화,이상규,김기환,전인혜,이동주,정혜민,정태천,Jeon, Tae-Won,Kim, Chun-Hua,Lee, Sang-Kyu,Kim, Ghee-Hwan,Jun, In-Hye,Lee, Dong-Ju,Jeong, He-Min,Jeong, Tae-Cheon 대한약학회 2006 약학회지 Vol.50 No.4
Effects of chrysene on immune functions were studied in female BALB/c mice. When mice were treated po with chrysene for 7 consecutive days, the antibody response was suppressed dose-dependently. Chrysene induced the enzyme activities of CYP LA and 2B time- and dose-dependently. In ex vivo lymphocyte proliferation, chrysene inhibited splenocyte proliferation by LPS and Con A. Moreover, the numbers of $CD4^+IL-2^+$ cells were reduced by chrysene. In conclusion, chrysene-induced immunotoxicity might be mediated, at least in part, via IL-2 production, and caused by mechanisms associated with metabolic activation.
마우스 및 랫드에서 botulinum toxin type A의 단회 및 28일 반복투여 독성시험
전태원,김지영,현선희,김남희,이상규,김춘화,우희동,양기혁,정현호,정태천,Jeon, Tae-Won,Kim, Ji-Young,Hyun, Sun-Hee,Kim, Nam-Hee,Lee, Sang-Kyu,Kim, Chun-Hwa,Woo, Hee-Dong,Yang, Gi-Hyeok,Jung, Hyun-Ho,Jeong, Tae-Cheon 대한수의학회 2003 大韓獸醫學會誌 Vol.43 No.1
Single and 28-day repeated dose toxicity studies of botulimnn toxin type A were carried out in ICR mice and Sprague-Dawley rats, respectively. In the single dose toxicity study, botulinwn toxin was injected intraperitoneally to male and female mice at a single dose of 40, 59, 89 133 and 200 ng/10 ml saline/kg. All animals died from 59 ng/kg group. Some clinical signs, such as decrease in locomotor activity, dyspnea, prone position and ptosis, were observed in most of both sexes from 59 ng/kg group, but no signs were seen in all animals at 40 ng/kg group. The results showed that the median lethal dose of botulinum toxin might be in the range of 40-59 ng/kg in both sexes. In the repeated dose toxicity study, the test material was administered intradermally for 28 days at doses of 0 (vehicle-treated control), 1.25, 2.5, 5.0 and $10.0ng/head/50{\mu}{\ell}$ saline in male and female rats. No test material-related changes were noted in survivals, clinical signs, food and water consumptions and gross finding in any group. Botulinum toxin treatment significantly decreased the body weight gain rate in male of 5.0 ng/head group and over and in female of 10.0 ng/head group compared to vehicle-treated control. One or more relative organ weights (i.e., spleen, thymus, liver and kidney) were increased significantly from 5.0 ng/head group compared to vehicle-treated control in both sexes. Serum biochemistry revealed increases in aspartate aminotransferase (AST), alanine aminotransferase (ALT), creatine phosphokinase, total protein and albumin in male, and increases in AST and ALT and decreases in $K^+$ and $Cl^-$ in female without dose-pendent manners. In the histopathological study, physical stimulation by needle caused slight inflammations of dennis. In addition, botulinum toxin treatment induced denervation of nerve cell and disuse of muscle, resulting in atrophy of skeletal muscle in both sexes from 2.5 ng/head group. When the antibodies to toxin were determined in all animals, a significant increase in serum antibodies was observed from 5.0 ng/head group. The results showed that the NOAEL of botulinum toxin might be 1.25 ng/head for 28-day repeated dose toxicity in rats.
다슬기와 마늘이 사염화탄소로 유발된 랫드의 간손상에 미치는 보호효과
전태원(Tae Won Jeon),이은실(Eun Sil Lee),이영선(Young Sun Lee),한옥경(Ok Kyung Han),박무현(Moo Hyun Park),김광중(Kwang Joong Kim),김효정(Hyo Jung Kim) 한국식품영양과학회 2002 한국식품영양과학회지 Vol.31 No.3
다슬기와 마늘 혼합건조분말(3 g/kg b.w. in saline, 7 : 3 ratio, p.o.)의 전처리가 CCl₄(1 g/kg b.w. in corn oil)의 경구 투여로 유도된 간손상 실험동물모델에 미치는 간보호 효능을 확인하기 위하여 혈청 중 간기능 지표효소 활성도 및 광학 현미경적 관찰을 실시하여 다음과 같은 결과를 얻었다. 간기능 지표효소인 혈청 ALT, AST 및 SDH 활성도는 다슬기와 마늘의 전처리로 CCl₄단독 투여군에 비해 통계적으로 유의성 있게 감소하였으나 혈청 ALP 활성도는 CCl₄투여로 증가된 활성을 다슬기와 마늘의 전처리로 감소시키지 못했다. 광학현미경적 관찰에서 CCl₄단독 투여군의 경우 인접한 괴사 부위와 bridge를 형성한 central necrosis 영역에서 염증 세포의 침윤과 울혈현상이 나타났으나, 다슬기와 마늘의 전처리 군에서는 중심영역에서 소핵을 갖는 부푼 형태의 초기 가역적 손상을 입은 간세포가 관찰되었을 뿐 CCl₄단독 투여군과 같은 염증 세포의 침윤이나 괴사는 관찰되지 않았다. 이상의 실험 결과를 종합해 볼 때, 다슬기와 마늘의 혼합 건조 분말이 간세포의 기능을 유지시킴으로써 사염화탄소 투여에 의해 유발된 간손상을 억제하여 간조직을 보호할 수 있을 것으로 사료된다. This study was designed to investigate the hepatoprotective effects of Semisulcospira libertina and garlic on the acute hepatotoxicity induced by carbon tetrachloride (CCl₄) of rats. Male Sprague-Dawley rats weighing 200~220 g were pretreated with dehydrated powder of Semisulcospira libertina (2.1 g/kg, po; SL) and dehydrated powder mixture of Semisulcospira libertina and garlic (3 g/kg, 7:3 ratio, po; SG) once daily for 3 consecutive days, and then given a single dose of CCl₄ (1 g/kg in 5 ml/kg corn oil, po) and liver function was determined 24 hrs later. Liver damage was assessed by quantitating activities of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), sorbitol dehydrogenase (SDH) and alkaline phosphatase (ALP) as well as by histopathological examination. Pretreatments with SL and SG significantly decreased CCl₄-elevated ALT (48% and 61% respectively), AST (32% and 47%) and SDH (51% and 76%), but had no effect on ALP. SL and SG had revealed hepatoprotective effects against CCl₄-induced histopathological changes such as severe necrosis, inflammatory cell infiltration and congestion in the central zone of hepatic lobule. These findings demonstrate that SL and SG may have the hepatoprotective effect on CCl₄-induced liver damage.