Safety and efficacy assessment of standardized herbal formula PM012

BMC Complementary and Alternative Medicine

Hyunsu Bae²  Insop Shim²  Yong Kim²  Soo-Jeong Kim¹  Sung-Hwa Sohn² 

[1] Present address: Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 505 Banpo-dong, Seoul, Seocho-gu 137-701, Republic of Korea;Department of Physiology, College of Oriental Medicine, Kyung Hee University, Hoegi-dong, Seoul, Dongdaemun-gu 130-701, Republic of Korea

关键词: Spatial memory;    Morris water maze;    NOAEL;    Presenilin 2;    Repeated oral toxicity;    PM012;   

Others  :  1232785
DOI  :  10.1186/1472-6882-12-24

 received in 2011-12-30, accepted in 2012-03-29,  发布年份 2012

【 摘 要 】

Background

This study was conducted to evaluate the efficacy of the herbal formula PM012 on an Alzheimer's disease model, human presenilin 2 mutant transgenic mice (hPS2m), and also to evaluate the toxicity of PM012 in Sprague-Dawely rats after 4 or 26 weeks treatment with repeated oral administration.

Methods

Spatial learning and memory capacities of hPS2m transgenic mice were evaluated using the Morris Water Maze. Simultaneously, PM012 was repeatedly administered orally to male and female SD rats (15/sex/group) at doses of 0 (vehicle control), 500, 1,000 and 2,000 mg/kg/day for 4 or 26 weeks. To evaluate the recovery potential, 5 animals of each sex were assigned to vehicle control and 2,000 mg/kg/day groups during the 4-week recovery period.

Results

The results showed that PM012-treated hPS2m transgenic mice showed significantly reduced escape latency when compared with the hPS2m transgenic mice. The repeated oral administration of PM012 over 26 weeks in male and female rats induced an increase and increasing trend in thymus weight in the female treatment groups (main and recovery groups), but the change was judged to be toxicologically insignificant. In addition, the oral administration of the herbal medicine PM012 did not cause adverse effects as assessed by clinical signs, mortality, body weight, food and water consumption, ophthalmology, urinalysis, hematology, serum biochemistry, blood clotting time, organ weights and histopathology. The No Observed Adverse Effects Levels of PM012 was determined to be 2,000 mg/kg/day for both sexes, and the target organ was not identified.

Conclusion

These results suggest that PM012 has potential for use in the treatment of the Alzheimer's disease without serious adverse effects.

【 授权许可】

   
2012 Sohn et al; licensee BioMed Central Ltd.

【 图 表 】

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