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Under Metabolism it says that "Normally, a tiny amount of bilirubin is excreted in the urine, accounting for the light yellow color". But my understanding is that normally, you DON'T have any bilirubin in urine. If you look at the urinalysis article you'll see that the upper limit on bilirubin is 0, so bilirubin in urine would indicate some sort of pathology. As for the yellow color of urine I think it's mostly due to urobilin.
If you're going to include the Silence of the Lambs reference then it's only fair that Juan Luis Guerra's song, 'Me sube la bilirubina' (My bilirubin is increasing), should be included as well. It was very popular, deplored hospital conditions in the Dominican Republic and is very catchy and easy to dance to.
Christianpunk has added content to bilirubin metabolism, which was previously a redirect pointing at this article. I think it would be best to have that material merged into bilirubin and restore the title to its former status as a redirect. Comments? --User:Ceyockey ( talk to me) 15:28, 28 December 2006 (UTC)
Can poetry be written about science? Bilirubin —Preceding unsigned comment added by Owled ( talk • contribs) 01:16, 27 January 2008 (UTC)
This page could use more info on BR metabolism... eg. ABC transporters-- Xris0 ( talk) 13:54, 7 February 2008 (UTC)
Is the formula correct? I dont have detailed knowledge of it, but the nitrogen atoms have two covalent bonds, and they probably should have three.-- 91.127.27.233 ( talk) 21:38, 25 March 2008 (UTC)
"Heme is formed from hemoglobin, a principle component of red blood cells." I'm pretty sure this is not quite right, since heme is a part of hemoglobin, it doesn't make sense that it would be formed from hemoglobin. If anyone with more knowledge than I can comment, that would be great, otherwise I'll try to look it up and change it soon. Acbranch ( talk) 19:11, 21 May 2008 (UTC)
I just found that my mother has Factor V Leiden and me and my son need to be tested. I'm hesitant to stress him out about the issue as he is a policeman and under a lot of stress. My question is this......his Bilirubin level is sligthly raised. Would the Factor V Leiden interfer with his Bilirubin? Anyone with information on this could email me at asforid@aol.com. thank you, Jo Simpson —Preceding unsigned comment added by 75.219.227.44 ( talk) 03:48, 21 September 2008 (UTC)
The link from the term isoform to the page on protein isoforms is incorrect. Bilirubin is not a protein but a haem metabolite. Thanks. —Preceding unsigned comment added by 130.88.110.39 ( talk) 16:22, 13 February 2009 (UTC)
The biliverdin page says that biliverdin is responsible for yellow bruises. This page says it's bilirubin. Which is correct?
Biliverdin is "vert" which means green. french. —Preceding
unsigned comment added by
128.23.218.156 (
talk) 01:21, 9 December 2009 (UTC)
Bilirubin is a reduction product of biliverdin; the two are interconvertible. Bruises can be green or yellow. --
Inportb (
talk) 17:45, 1 February 2011 (UTC)
yellow color is primarily due to urobilin, which is a catabolic product of bilirubin. -- Sarefo ( talk) 11:18, 18 January 2011 (UTC)
Yellow urine cannot be solely described by excretion of urobilin but can also be the result of excreted riboflavin and [ riboflavin-catabolism] — Preceding unsigned comment added by Pr0f3550r ( talk • contribs) 17:01, 4 February 2011 (UTC)
The illustration does not mention the liver, in particular conjugation of bilirubin to make it water-soluble. A better illustration could be something based on the illustration used in the following external wiki medrevise.co.uk (Bilirubin). — Preceding unsigned comment added by 91.186.78.4 ( talk) 12:54, 17 July 2012 (UTC)
The present article states under "Metabolism : Conjugated ("Direct")":
I would like to see the reference supporting the statement I italicised above. I have a suspicion that bilirubin has been confused with bile salts here. According to a review article on the subject of enterohepatic circulation of bilirubin, this is a minor phenomenon, absolutely restricted to unconjugated bilirubin and significant only in pathological conditions:
I would be happy to see a comment on this discrepancy please. If there is no reply, I will venture to change this section of the article as it seems misleading.
-- Wdanbae ( talk) 08:04, 26 November 2013 (UTC)
I think I have found the source of this confusion. Urobilin, the result of deconjugation and further metabolism of bilirubin diglucuronate by intestinal microbes, is subject to enterohepatic recirculation, although the majority of it is excreted with feces, according to the textbook on clinical chemistry I consulted. Wdanbae ( talk) 11:21, 12 December 2013 (UTC)
I was also suspicious, and looked at the actual Kuntz source that this article cited for the bilirubin recycling---it indicates quite the opposite of what was written, literally stating "Bilirubin diglucuronide is discharged into the intestine together with the bile. Absorption is neither possible from the gall bladder nor from the intestine; in general, no enterohepatic reabsorption of bilirubin takes place." I can only imagine that the "95% reabsorption" figure was lifted from the Wiki bile salts page, and this source was only used to verify the urobilin/stercobilin conversion. I've rewritten both paragraphs; hopefully they are now both more concise and more correct!
-- Eccentricity ( talk) 14:50, 11 April 2014 (UTC)
As I write this, the 'Toxicity' section contains this sentence: "The neurotoxicity of neonatal hyperbilirubinemia manifests because the blood–brain barrier has yet to develop fully, ..." But at the same time, the 'Development' section of the Blood-brain barrier page begins "Originally, experiments in the 1920s showed that the blood–brain barrier (BBB) was still immature in newborns. The reason for this mistake was an error in methodology ..." Obviously, one of these sentences is wrong. Which one? I'm inclined to believe the BBB page is correct. 76.178.144.62 ( talk) 04:32, 3 September 2014 (UTC)
doi:10.1001/jama.2014.12835 JFW | T@lk 11:07, 5 February 2015 (UTC)
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The section of unconjugated bilirubin under the section “ metabolism “ needs to be made a bit more elaborate and clear . Angunnu ( talk) 05:41, 8 December 2019 (UTC)
"Bilirubin is excreted in bile and urine"
I would suggest wording this differently as in:
-"Ultimately, the metabolites/endproducts of bilirubin are excreted in bile and via urine" — Preceding unsigned comment added by Smoutezot ( talk • contribs) 18:30, 16 December 2020 (UTC)
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||||||||||||
|
Under Metabolism it says that "Normally, a tiny amount of bilirubin is excreted in the urine, accounting for the light yellow color". But my understanding is that normally, you DON'T have any bilirubin in urine. If you look at the urinalysis article you'll see that the upper limit on bilirubin is 0, so bilirubin in urine would indicate some sort of pathology. As for the yellow color of urine I think it's mostly due to urobilin.
If you're going to include the Silence of the Lambs reference then it's only fair that Juan Luis Guerra's song, 'Me sube la bilirubina' (My bilirubin is increasing), should be included as well. It was very popular, deplored hospital conditions in the Dominican Republic and is very catchy and easy to dance to.
Christianpunk has added content to bilirubin metabolism, which was previously a redirect pointing at this article. I think it would be best to have that material merged into bilirubin and restore the title to its former status as a redirect. Comments? --User:Ceyockey ( talk to me) 15:28, 28 December 2006 (UTC)
Can poetry be written about science? Bilirubin —Preceding unsigned comment added by Owled ( talk • contribs) 01:16, 27 January 2008 (UTC)
This page could use more info on BR metabolism... eg. ABC transporters-- Xris0 ( talk) 13:54, 7 February 2008 (UTC)
Is the formula correct? I dont have detailed knowledge of it, but the nitrogen atoms have two covalent bonds, and they probably should have three.-- 91.127.27.233 ( talk) 21:38, 25 March 2008 (UTC)
"Heme is formed from hemoglobin, a principle component of red blood cells." I'm pretty sure this is not quite right, since heme is a part of hemoglobin, it doesn't make sense that it would be formed from hemoglobin. If anyone with more knowledge than I can comment, that would be great, otherwise I'll try to look it up and change it soon. Acbranch ( talk) 19:11, 21 May 2008 (UTC)
I just found that my mother has Factor V Leiden and me and my son need to be tested. I'm hesitant to stress him out about the issue as he is a policeman and under a lot of stress. My question is this......his Bilirubin level is sligthly raised. Would the Factor V Leiden interfer with his Bilirubin? Anyone with information on this could email me at asforid@aol.com. thank you, Jo Simpson —Preceding unsigned comment added by 75.219.227.44 ( talk) 03:48, 21 September 2008 (UTC)
The link from the term isoform to the page on protein isoforms is incorrect. Bilirubin is not a protein but a haem metabolite. Thanks. —Preceding unsigned comment added by 130.88.110.39 ( talk) 16:22, 13 February 2009 (UTC)
The biliverdin page says that biliverdin is responsible for yellow bruises. This page says it's bilirubin. Which is correct?
Biliverdin is "vert" which means green. french. —Preceding
unsigned comment added by
128.23.218.156 (
talk) 01:21, 9 December 2009 (UTC)
Bilirubin is a reduction product of biliverdin; the two are interconvertible. Bruises can be green or yellow. --
Inportb (
talk) 17:45, 1 February 2011 (UTC)
yellow color is primarily due to urobilin, which is a catabolic product of bilirubin. -- Sarefo ( talk) 11:18, 18 January 2011 (UTC)
Yellow urine cannot be solely described by excretion of urobilin but can also be the result of excreted riboflavin and [ riboflavin-catabolism] — Preceding unsigned comment added by Pr0f3550r ( talk • contribs) 17:01, 4 February 2011 (UTC)
The illustration does not mention the liver, in particular conjugation of bilirubin to make it water-soluble. A better illustration could be something based on the illustration used in the following external wiki medrevise.co.uk (Bilirubin). — Preceding unsigned comment added by 91.186.78.4 ( talk) 12:54, 17 July 2012 (UTC)
The present article states under "Metabolism : Conjugated ("Direct")":
I would like to see the reference supporting the statement I italicised above. I have a suspicion that bilirubin has been confused with bile salts here. According to a review article on the subject of enterohepatic circulation of bilirubin, this is a minor phenomenon, absolutely restricted to unconjugated bilirubin and significant only in pathological conditions:
I would be happy to see a comment on this discrepancy please. If there is no reply, I will venture to change this section of the article as it seems misleading.
-- Wdanbae ( talk) 08:04, 26 November 2013 (UTC)
I think I have found the source of this confusion. Urobilin, the result of deconjugation and further metabolism of bilirubin diglucuronate by intestinal microbes, is subject to enterohepatic recirculation, although the majority of it is excreted with feces, according to the textbook on clinical chemistry I consulted. Wdanbae ( talk) 11:21, 12 December 2013 (UTC)
I was also suspicious, and looked at the actual Kuntz source that this article cited for the bilirubin recycling---it indicates quite the opposite of what was written, literally stating "Bilirubin diglucuronide is discharged into the intestine together with the bile. Absorption is neither possible from the gall bladder nor from the intestine; in general, no enterohepatic reabsorption of bilirubin takes place." I can only imagine that the "95% reabsorption" figure was lifted from the Wiki bile salts page, and this source was only used to verify the urobilin/stercobilin conversion. I've rewritten both paragraphs; hopefully they are now both more concise and more correct!
-- Eccentricity ( talk) 14:50, 11 April 2014 (UTC)
As I write this, the 'Toxicity' section contains this sentence: "The neurotoxicity of neonatal hyperbilirubinemia manifests because the blood–brain barrier has yet to develop fully, ..." But at the same time, the 'Development' section of the Blood-brain barrier page begins "Originally, experiments in the 1920s showed that the blood–brain barrier (BBB) was still immature in newborns. The reason for this mistake was an error in methodology ..." Obviously, one of these sentences is wrong. Which one? I'm inclined to believe the BBB page is correct. 76.178.144.62 ( talk) 04:32, 3 September 2014 (UTC)
doi:10.1001/jama.2014.12835 JFW | T@lk 11:07, 5 February 2015 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Bilirubin. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 11:06, 6 December 2017 (UTC)
The section of unconjugated bilirubin under the section “ metabolism “ needs to be made a bit more elaborate and clear . Angunnu ( talk) 05:41, 8 December 2019 (UTC)
"Bilirubin is excreted in bile and urine"
I would suggest wording this differently as in:
-"Ultimately, the metabolites/endproducts of bilirubin are excreted in bile and via urine" — Preceding unsigned comment added by Smoutezot ( talk • contribs) 18:30, 16 December 2020 (UTC)