Anti-oxidative and anti-inflammatory activities of placental extracts in benzo[a]pyrene-exposed rats

S. Y. Park, S. Phark, M. Lee, J. Y. Lim, D. Sul

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


Objective: Placental extracts (PE) have been used for years as a folk remedy in Asian countries. PE mediates alleviation of menopausal symptoms, wound healing, liver regeneration and anti-inflammatory responses. In this study, we evaluated the protective effects of PE on rats exposed to benzo[a]pyrene (BaP). Methods: The composition of amino acids, sugars and fatty acids in PE was analyzed. The effect of PE on DNA damage was determined by Comet assay, and oxidative damage was determined by measuring the activity of superoxide dismutase and the levels of lipid peroxidation. The effect of PE on cytokines and immunoglobulin levels was determined by western blot analysis. Results: Exposure of rats to BaP significantly increased the Olive Tailmoments compared to controls, while pre-treatment with PE composed of diverse amino acids, monosaccharides and fatty acids significantly decreased the Olive Tailmoments induced by BaP. In addition, oxidative stress induced by BaP was attenuated by pre-treatment with PE. Furthermore, PE pre-treatment significantly decreased the levels of pro-inflammatory cytokines such as TNF-α, IL-1β, and IL-6. Conclusion: Pre-treatment of rats with PE significantly attenuates oxidative damage and immunotoxicity induced by BaP. These findings suggest the further studies regarding the protective effects of PE against environmental toxicants in humans.

Original languageEnglish
Pages (from-to)873-879
Number of pages7
Issue number10
Publication statusPublished - 2010 Oct

Bibliographical note

Funding Information:
This work was supported by the ACE program through the National Research Foundation of Korea (NRF) grant funded by the Korean Ministry of Education, Science and Technology (MEST) (No. 2009–009–1420 ).


  • Anti-inflammatory effect
  • Anti-oxidant
  • Benzo[a]pyrene
  • Placental extracts
  • Rats

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology
  • Developmental Biology


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