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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한한방내과학회 대한한방내과학회지 대한한방내과학회지 제27권 제1호
발행연도
2006.1
수록면
102 - 113 (12page)

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Objectives & Methods : To obtain the 50% lethal dose(LD50), approximated lethal dose(ALD) and approximated target organs of “Mahwangyounpae-tang” for further study into such things as repeated dose toxicity, genotoxicity and reproductive toxicity, single dose toxicity was tested in male SD rats according to KFDA Guideline 1999-61[KFDA, 1999] at dosage levels of 2,000, 1,000, 500, 250 and 125 ㎎/㎏/10㎖. In this study, mortalities, clinical signs, body weight changes and body weight gains, gross findings and weight of principal organs were detected during and/or after 14 days of single dosing. Results & Conclusions : After 2 or 3 days of dosing, 1 or 2 animals in 2,000 ㎎/㎏-dosing groups died. Excitation and leaping response were observed as test article-treatment related clinical signs. These abnormal signs were restricted to 2,000 and 1,000 ㎎/㎏-dosing groups and survivors recovered to normal within 3 or 4 days after dosing. Significant decrease in body weight were observed in some periods of observation in 2,000 and 1,000 ㎎/㎏-dosing group, from 1 days after dosing compared to those of vehicle control group. Significantly diminished body weight gains were observed in observation periods in 2,000 and 1,000 ㎎/㎏-dosing group compared to those of vehicle control group. Hypertrophy and hemorrhage of heart and decoloration of kidney were observed as test article-treatment related gross findings. These abnormal findings were restricted to 2,000 and 1,000 ㎎/㎏-dosing groups. A significant increase of absolute and relative heart and kidney weight were demonstrated in 2,000 ㎎/㎏-dosing groups. The value for LD50 found in this study was 2,218.57 ㎎/㎏. ALD in this study was 2,000 ㎎/㎏, and the target organs are considered to be the heart and the kidney.

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