Chinese researchers have discovered how the chemicals in green tea affect the generation of brain cells, providing benefits for memory and spatial learning. Their findings have been published in Molecular Nutrition & Food Research.
"Green tea is a popular beverage across the world," said study author Professor Yun Bai, of the Third Military Medical University in Chongqing. "There has been plenty of scientific attention on its use in helping prevent cardiovascular diseases, but now there is emerging evidence that its chemical properties may impact cellular mechanisms in the brain."
Bai's team focused on the organic chemical epigallocatechin-3 gallate (EGCG), a key property of green tea. While EGCG is a known anti-oxidant, the team believed it can also have a beneficial effect against age-related neurodegenerative diseases.
"We proposed that EGCG can improve cognitive function by impacting the generation of neuron cells, a process known as neurogenesis," said Bai. "We focused our research on the hippocampus, the part of the brain which processes information from short-term to long-term memory."
The team found that ECGC boosts the production of neural progenitor cells, which like stem cells can adapt, or differentiate, into various types of cells. The team then used laboratory mice to discover if this increased cell production gave an advantage to memory or spatial learning.
"We ran tests on two groups of mice, one which had imbibed ECGC and a control group," said Bai. "First the mice were trained for three days to find a visible platform in their maze. Then they were trained for seven days to find a hidden platform."
The team found that the ECGC treated mice required less time to find the hidden platform. Overall the results revealed that EGCG enhances learning and memory by improving object recognition and spatial memory.
"We have shown that the organic chemical EGCG acts directly to increase the production of neural progenitor cells, both in glass tests and in mice," concluded Bai. "This helps us to understand the potential for EGCG, and green tea which contains it, to help combat degenerative diseases and memory loss."
Discuss this article in our forum
Warning On Green Tea Extract
Green tea powder's benefits nixed by poor storage
Green Tea Linked To Skin Rejuvenation
Source: Agriculture and Molecular Nutrition & Food Research