When mice lose a specific protein (Ostα/Ostβ) in their lower intestine, bile acids get stuck inside the gut cells instead of going back to the liver, which messes up the whole recycling system and reduces the total amount of bile acids in the body.
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The study uses targeted genetic deletion in mice with direct functional assays (everted sacs), providing definitive evidence for the transporter’s role in this specific mouse model. No overstatement occurs because the claim is confined to the experimental system.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Evidence from Studies
Supporting (1)
Deletion of the ileal basolateral bile acid transporter identifies the cellular sentinels that regulate the bile acid pool
Scientists removed a specific protein (Ostα) in mice that helps move bile acids out of the intestine into the blood. When they did, bile acids got stuck inside the gut cells, less made it back to the liver, and the overall bile acid amount dropped — proving this protein is the main gate for moving bile acids out of the gut.