Talk:Bilirubin

message: 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)
replies: text: I agree. Someone's already done it. Rod57 (talk) 00:25, 19 November 2008 (UTC)
thread_title:  Bilirubin metabolism content 

message: Can poetry be written about science? Bilirubin  —Preceding unsigned comment added by Owled (talk • contribs) 01:16, 27 January 2008 (UTC)
thread_title:  Where Science meets Art 

message: This page could use more info on BR metabolism... eg. ABC transporters--Xris0 (talk) 13:54, 7 February 2008 (UTC)
thread_title: More on metabolism

message: 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)
replies: text: Diagram shows each N with 3 bonds now (inc one to the adjacent H). Rod57 (talk) 00:19, 19 November 2008 (UTC)
thread_title:  Formula 

message: "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)
replies: text: It's been clarified. Rod57 (talk) 00:23, 19 November 2008 (UTC)
thread_title:  Bilirubin 

message: 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)
thread_title:  Factor V Leiden 

message: 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)
thread_title:  Link to protein isoform page 

message: 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)
thread_title:  Bruises 

message: yellow color is primarily due to urobilin, which is a catabolic product of bilirubin. --Sarefo (talk) 11:18, 18 January 2011 (UTC)
thread_title:  yellow urine 

message: 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)
thread_title:  Not instructive illustration 

message: The present article states under "Metabolism : Conjugated ("Direct")":
:"In the liver bilirubin is conjugated with glucuronic acid by the enzyme glucuronyltransferase, making it soluble in water. Much of it goes into the bile and thus out into the small intestine. However, 95% of the secreted bilirubin is reabsorbed by the intestines(Terminal Ileum) and reaches the liver by portal circulation and then resecreted by the liver into the small intestine. This process is known as enterohepatic circulation. "
:
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:
:"In contrast to bile salts, which undergo a highly efficient enterohepatic circulation with multiple regulatory and physiologic functions, glucuronic acid conjugates of bilirubin are biliary excretory molecules that in health do not have a continuing biologic life. Intestinal absorptive cells are devoid of recapture transporters for bilirubin conjugates, and their large size and polarity prevent absorption by passive diffusion. However, unconjugated bilirubin, the beta-glucuronidase hydrolysis product of bilirubin glucuronides can be absorbed passively from any part of the small and large intestines. This can occur only if unconjugated bilirubin is kept in solution and does not undergo rapid bacterial reduction to form urobilinoids. Here we collect, and in some cases reinterpret, experimental and clinical evidence to show that in addition to the well-known occurrence in newborns, enterohepatic cycling of unconjugated bilirubin can reappear in adult life. This happens as a result of several common conditions, particularly associated with bile salt leakage from the small intestine, the most notable ileal dysfunction resulting from any medical or surgical cause. We propose that when present in excess, colonic bile salts solubilize unconjugated bilirubin, delay urobilinoid formation, prevent calcium complexing of unconjugated bilirubin and promote passive absorption of unconjugated bilirubin from the large intestine. Following uptake, reconjugation, and resecretion into bile, this source of 'hyperbilirubinbilia' may be the important pathophysiological risk factor for 'black' pigment gallstone formation in predisposed adult humans."
:(L. Vítek, M. C. Carey, Enterohepatic cycling of bilirubin as a cause of ‘black’ pigment gallstones in adult life. European Journal of Clinical Investigation, Volume 33, Issue 9, pages 799–810, September 2003)
:
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)
thread_title:  Recycling

message: 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)
thread_title:  Toxicity & the blood-brain barrier 

message: doi:10.1001/jama.2014.12835 JFW | T@lk 11:07, 5 February 2015 (UTC)
thread_title:  Interpretation of high bilirubin 

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thread_title:  External links modified 

message: 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)
thread_title:  Metabolism 

message: "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)
thread_title:  bilirubin urine