Study on Apigenin Effects in Mice with Down Syndrome

Understanding Down Syndrome

Down syndrome is characterized by the presence of an extra copy or fragment of chromosome 21, although the underlying causes remain largely unknown. Researchers suspect that inflammation during fetal brain development may contribute to reduced brain growth, resulting in intellectual and developmental delays.

Research Overview

A recent study conducted by a team of doctors from the National Institutes of Health and the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) explored the effects of apigenin, a plant compound, on Down syndrome. This chemical is naturally found in various plants, including chamomile, mint, parsley, celery, and citrus fruits. The findings of the study were published in the *American Journal of Human Genetics*.

Historical Use of Chamomile

Chamomile has been utilized since ancient times for its anti-inflammatory properties, as well as for treating spasms, serving as an antiseptic, and alleviating upset stomachs. While commonly consumed as an herbal tea, the popularity of chamomile essential oil has surged in recent years.

Reasons for Studying Apigenin

Researchers focused on apigenin due to its anti-inflammatory, non-toxic nature, and its ability to cross the placenta and the blood-brain barrier. To assess the impact of apigenin on Down syndrome, the research team administered the compound to pregnant mice carrying offspring with Down syndrome. After birth, these mice continued to receive apigenin throughout their development.

Comparison of Mice Groups

The performance of apigenin-fed mice with Down syndrome was compared to that of a control group that received a standard diet. Both groups were monitored for developmental milestones and underwent tests assessing spatial and olfactory memory. Additionally, the researchers evaluated specific gene and protein levels in both groups.

Findings and Implications

Results indicated that mice receiving apigenin outperformed those on a normal diet in spatial and olfactory memory tests and demonstrated improvements in developmental assessments. Notably, the apigenin group exhibited reduced signs of inflammation, and their nervous systems showed greater growth compared to the control group.

Future Research Directions

While these findings are promising, further studies are necessary to validate the results and explore the potential for human applications. If successful, apigenin could offer a prenatal treatment option for women expecting babies with Down syndrome.

About the Author

Written by: Rebecca K. Blankenship, B.Sc.

References

1. Facts and FAQ About Down Syndrome. Global Down Syndrome Foundation. https://www.globaldownsyndrome.org/about-down-syndrome/facts-about-down-syndrome/. Published October 20, 2020.
2. Guedj F, Siegel AE, Pennings JL, et al. Apigenin as a Candidate Prenatal Treatment for Trisomy 21: Effects in Human Amniocytes and the Ts1Cje Mouse Model. The American Journal of Human Genetics. 2020. doi:10.1016/j.ajhg.2020.10.001
3. Singh O, Khanam Z, Misra N, Srivastava M. Chamomile (Matricaria chamomilla L.): An overview. Pharmacognosy Reviews. 2011;5(9):82. doi:10.4103/0973-7847.79103