bile acids

Prep for USMLE Forum

» Log in | Register

Forum

Step 1

Match

Prep4USMLE Forum » USMLE Step 1 Forum » Biochemistry Forum

bile acids

Author

4 Posts

docmp
Forum Newbie

Topics: 3
Posts: 5

11/24/06 - 10:21 PM

Can anyone tell me how bile acids are the only significant mechanism for cholesterol excretion if they are being reabsorbed and recycled? Why would the body continue making them if they are mostly recycled?

Angelman

avatar

Topics: 13
Posts: 38

11/24/06 - 11:15 PM

Enterohepatic circulation of bile salts is such that

90% = reabsorbed and recycled

10% = excreted throught feces

docmp
Forum Newbie

Topics: 3
Posts: 5

11/25/06 - 04:33 PM

Thanks for your post Angelman. My notes say that 90% is reabsorbed and 10% is excreted, but what I don't get is if most of it is reabsorbed then only a small amount of new bile acids would be made. So how can cholesterol effectively be excreted if most of the bile acids come back and only very little amounts of new ones are needed?

Angelman

avatar

Topics: 13
Posts: 38

11/25/06 - 05:01 PM

docmp wrote:
Thanks for your post Angelman. My notes say that 90% is reabsorbed and 10% is excreted, but what I don't get is if most of it is reabsorbed then only a small amount of new bile acids would be made. So how can cholesterol effectively be excreted if most of the bile acids come back and only very little amounts of new ones are needed?

Don't you think ,this 10% ( bile salts = cholestrol) excretion is sufficient to maitain a constant level in the body??

You don't have permission to post.