This study was carried out to analyze uridine diphosphate (UDP)-glucuronosyltransferase 1A1 (UGT1A1) gene mutations in neonates with unconjugated hyperbilirubinemia, from two different ethnic groups. Polymerase chain reaction and gene sequencing were used to analyze the differences in genotypes and allele frequencies of different gene mutations among the ethnic groups; this was followed by chec...

In mammals, unconjugated bilirubin is rapidly cleared from the circulation and almost quantitatively excreted as a conjugate in the bile (2-4). The efficiency and rapidity of this process indicate that conjugation and subsequent biliary excretion represent the principal pathway of bilirubin disposition. If alternate pathways of bilirubin metabolism exist under physiologic conditions, their leve...

In July 2004, the Subcommittee on Hyperbilirubinemia of the American Academy of Pediatrics (AAP) published its clinical practice guideline on the management of hyperbilirubinemia in the newborn infant 35 weeks of gestation,1 and a similar guideline was published in 2007 by the Canadian Paediatric Society.2 Experience with implementation of the AAP guideline suggests that some areas require clar...

To determine the association between polymorphism of UGT1A1 gene and idiopathic hyperbilirubinemia in Iranian neonates. Fifty neonates with idiopathic hyperbilirubinemia and Serum total bilirubin (STB) more that 15mg/dl and 50 neonates with idiopathic hyperbilirubinemia and Serum total bilirubin (STB) less than 15mg/dl enrolled in this study. Thymine-adenine (TA)  repeats in the promoter region...

PURPOSE To evaluate the difference in cerebral blood flow velocity (CBFV) in neonates with and without hyperbilirubinemia. METHODS CBFV of 70 healthy late-preterm and term newborns with unconjugated hyperbilirubinemia (UCH) reaching the threshold of phototherapy requirement was compared with 70 gestational- and postnatal age-matched controls without hyperbilirubinemia. Resistance index (RI), ...

OBJECTIVE To study the clinical and laboratory characteristics of hyperbilirubinemia in glucose-6-phosphate dehydrogenase (G6PD)-deficient male newborns from Al-Ahsa area (Ahsais). METHODS The medical records of inborn male infants at King Abdulaziz Hospital (KAH) in Al-Ahsa area, Kingdom of Saudi Arabia from May 2008 through April 2009 were reviewed. Inclusion criteria were healthy non-polyc...

A model of experimental postnatal hyperbilirubinemia in the rat has been developed utilizing the heme precursor delta-aminolevulinic acid (ALA) to produce jaundice during a selective time period after birth. This time period is defined as that between 7 d postnatally, when the initial postpartum alterations of serum bilirubin and heme metabolism in the neonate have subsided, and 21 d, when the ...

OBJECTIVE: To review the recent medical literature on the treatment of neonatal jaundice, focusing on practical aspects that are relevant to pediatricians and neonatologists. SOURCES: An extensive review of the related literature was performed, also including the authors clinical experience in this field of investigation. SUMMARY OF THE FINDINGS: Jaundice is very common among infants during the...

BACKGROUND AND AIM The pathogenesis of neonatal hyperbilirubinemia hasn't been completely defined in Gloucose-6-Phosphate Dehydrogenase (G6PD) deficient newborns. The aim of this study was to detect the relationship between Gilbert's syndrome and hyperbilirubinemia in Gloucose-6-Phosphate Dehydrogenase (G6PD) deficient neonates. MATERIALS AND METHODS This case-control study was conducted in A...