The study was led by Ramji Bhandari, an associate professor at the University of Missouri, using medaka to investigate how potassium perchlorate affects reproductive organs and function. Researchers chose fish because many reproductive genes and processes are similar to those in humans.
Male fish exposed to potassium perchlorate experienced a dramatic drop in fertility and visible testicular damage. In a second group, fish received both the chemical and vitamin C; these fish showed improved fertility and less damage than fish exposed to the chemical alone.
The team found that potassium perchlorate causes oxidative stress, which interferes with genes and molecular pathways involved in sperm production. They report that vitamin C, as a powerful antioxidant, can restore those pathways and protect sperm production. The researchers note the findings are relevant for military, industrial and environmental settings, and they call for more research to see how preventive treatments might work in humans. The research appears in Environmental Science and Technology.
Difficult words
- potassium perchlorate — a chemical often used in industry and rockets
- investigate — look closely to discover facts or causes
- reproductive — related to producing babies or new organisms
- fertility — ability to produce healthy offspring or sperm
- testicular — connected with the testes or male reproductive organs
- oxidative stress — cell damage caused by reactive oxygen molecules
- antioxidant — a substance that reduces damage from oxidation
- restore — bring back to a previous condition or state
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you think vitamin C could help humans exposed to similar chemicals? Why or why not?
- What steps could industrial or military settings take to protect reproductive health from chemicals?
- Have you ever changed your diet or taken supplements for health reasons? What changed and why?
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