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Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
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Related Experiment Video

Updated: Dec 2, 2025

Biochemical Measurement of Neonatal Hypoxia
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Neonatal Indirect Hyperbilirubinemia.

Nicole B Anderson1, Kara L Calkins1

  • 1Department of Pediatrics, Division of Neonatology and Developmental Biology, Neonatal Research Center of the UCLA Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, Los Angeles, CA.

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|November 3, 2020
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Summary
This summary is machine-generated.

Neonatal indirect hyperbilirubinemia (IHB) affects many infants due to bilirubin imbalance. Management strategies like phototherapy and exchange transfusion are crucial for severe cases, aiming to prevent kernicterus spectrum disorder.

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Area of Science:

  • Neonatology
  • Pediatric Gastroenterology
  • Biochemistry

Background:

  • Neonatal indirect hyperbilirubinemia (IHB) is common, affecting up to 60% of term and 80% of preterm infants.
  • It arises from an imbalance between bilirubin production and elimination.
  • Jaundice is a common clinical sign in the first week of life.

Purpose of the Study:

  • To provide a comprehensive understanding of bilirubin physiology.
  • To review the etiologies of neonatal indirect hyperbilirubinemia.
  • To discuss the management strategies for severe cases of IHB.

Main Methods:

  • Literature review focusing on bilirubin metabolism, causes of IHB, and treatment modalities.
  • Analysis of current therapeutic interventions for severe neonatal jaundice.
  • Exploration of emerging diagnostic and therapeutic advancements.

Main Results:

  • Phototherapy and exchange transfusion are established treatments for severe IHB.
  • Understanding the roles of prematurity and genetics is advancing IHB management.
  • New screening tools and treatments are emerging.

Conclusions:

  • Effective management of IHB is essential to prevent severe complications.
  • Continued research into prematurity and genetic factors will improve outcomes.
  • The goal is to mitigate risks associated with severe neonatal jaundice, including kernicterus spectrum disorder.