I studied the effects of serum dilution and oxidation of albumin-bound bilirubin on the accuracy of results by the peroxidase method for assessing bilirubin-albumin binding. The apparent concentration of unbound bilirubin decreases with dilution of bilirubin-enriched serum or defatted-albumin solutions, the effect being more marked with serum. The decrease in apparent unbound bilirubin does not...

Graft-versus-host disease (GVHD) is the most frequent complication after allogeneic hematopoietic cell transplantation. We analyzed the kinetics of bilirubin and liver enzymes in 47 cases with liver GVHD and in 47 cases without GVHD after allogeneic transplantation for various hematological malignancies. The duration of an liver GVHD episode (LGVHD) was defined as the interval from the point wh...

BACKGROUND Bilirubin has been seen as a toxic waste product since it is product of heme metabolism. It's the latest in a series of studies showed that the concentration of serum bilirubin is associated with various diseases such as multiple sclerosis, hypertension and cardiovascular diseases (CVD). However, no study to investigate the association between serum bilirubin and migraine, thus, our ...

BACKGROUND Unconjugated hyperbilirubinemia may cause brain damage in infants, and globally remains a source of neonatal morbidity and mortality. A significant inter-individual variability in vulnerability to bilirubin toxicity remains largely unexplained. An enzyme located in mitochondria oxidizes bilirubin. We hypothesized that inhibiting bilirubin oxidation in human neuronal cell cultures exp...

Inhibition of UDP-glucuronosyltransferase (UGT) 1A1-catalyzed bilirubin glucuronidation by drug compounds may potentially be of clinical concern. However, in drug discovery and development settings, bilirubin is less than an ideal in vitro probe for assessing the potential of a chemical entity to inhibit bilirubin glucuronidation. In part, this is due to the propensity of bilirubin to photodegr...

background: considering the increasing rates of early hospital discharge and kernicterus in healthy full term newborns, timely identification of neonates at risk of severe hyperbilirubinemia is of great significance. the aim of this study was to investigate the predictive value of umbilical cord serum (ucs) bilirubin level for subsequent hyperbilirubinemia. moreover, we compared the predictive ...

Gunn rats, which have defects in bilirubin and 4-nitrophenol UDP-glucuronyltransferases (GT), were crossed with LA Wistar rats with a defect in androsterone GT. The F1 hybrids showed normal GT activities towards androsterone, bilirubin and 4-nitrophenol, demonstrating that Gunn and LA ('low activity') Wistar rats inherit a homozygous dominant trait for androsterone GT and bilirubin GT respectiv...

Background Oxidative stress plays an important role in the pathogenesis of cardiovascular degenerative diseases. Bilirubin is known to be a potent endogenous antioxidant, both in in vitro and in vivo. The latter can be ascribed to an efficient amplification cycle whereby bilirubin, acting as antioxidant, is itself oxidized to biliverdin and then recycled back to bilirubin by NADPH-dependent bil...

The binding of bilirubin to poly(L-lysine) produces an optically active complex at pH 10.1. Circular dichroism spectra of these complexes are distinguishable from those generated by binding of bilirubin to the high affinity sites on albumin. Comparison of the circular dichroism spectra of bilirubin bound to the hepatic protein ligandin with those of bilirubin complexed with albumin or polylysin...

The correlation between the yellow colour of the skin and serum bilirubin concentration, reserve albumin concentration, and pH was investigated in 76 icteric neonates. Significant linear correlation existed between yellow colour of the skin and serum bilirubin concentration, reciprocal of the reserve albumin concentration, and the squared hydrogen ion concentration. Furthermore, the basic yello...