Can Broccoli Help Protect Your Gut Lining?
In mice, broccoli contains aryl hydrocarbon receptor (AHR) molecules that bind to a ligand receptor and protect the lining of the small intestine. The findings support to the idea that broccoli truly is a �superfood.'
"We all know that broccoli is good for us, but why? What happens in the body when we eat broccoli?" said Gary Perdew, H. Thomas and Dorothy Willits Hallowell Chair in Agricultural Sciences, Penn State. "Our research is helping to uncover the mechanisms for how broccoli and other foods benefit health in mice and likely humans, as well. It provides strong evidence that cruciferous vegetables, such as broccoli, cabbage, and Brussels sprouts should be part of a normal healthy diet."
Why Is Broccoli Super Food So Popular?
According to Perdew, the wall of the small intestine allows beneficial water and nutrients to pass into the body but prevents food particles and bacteria that could cause harm. Certain cells that line the intestine - including enterocytes, which absorb water and nutrients; goblet cells, which secrete a protective layer of mucus on the intestinal wall; and Paneth cells, which secrete lysosomes that contain digestive enzymes - help to modulate this activity and keep a healthy balance.‘Broccoli and other cruciferous vegetables that are rich sources of aryl hydrocarbon receptor (AHR) ligands were found to benefit intestinal health. ’
In their study, which published in the journal Laboratory Investigation, Perdew and his colleagues found that molecules in broccoli, called aryl hydrocarbon receptor ligands, bind to aryl hydrocarbon receptor (AHR), which is a type of protein called a transcription factor. This binding, they found, initiates a variety of activities that affect the functions of intestinal cells.
To conduct their study, the researchers fed an experimental group of mice a diet containing 15% broccoli - equivalent to about 3.5 cups per day for humans - and fed a control group of mice a typical lab diet that did not contain broccoli. They then analyzed the animals' tissues to determine the extent to which AHR was activated, as well as the quantities of various cell types and mucus concentrations, among other factors, in the two groups.
The team found that mice that were not fed broccoli lacked AHR activity, which resulted in altered intestinal barrier function, reduced transit time of food in the small intestine, decreased number of goblet cells and protective mucus, decreased Paneth cells and lysosome production, and decreased number of enterocyte cells.
"The gut health of the mice that were not fed broccoli was compromised in a variety of ways that are known to be associated with disease," said Perdew.
Source: Eurekalert