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Related Concept Videos

Inborn Errors of Metabolism01:20

Inborn Errors of Metabolism

Phenylketonuria (PKU) is a protein metabolism disorder characterized by high blood levels of the amino acid phenylalanine. This results from a mutation in the gene responsible for phenylalanine hydroxylase, an enzyme that converts phenylalanine into tyrosine. When this enzyme is deficient, phenylalanine builds up in the blood, leading to symptoms such as vomiting, rashes, seizures, growth deficiency, and severe mental retardation. An early diagnosis and a diet restricting phenylalanine intake...
Glucose Transporters01:27

Glucose Transporters

Glucose transporters facilitate the transport of glucose across the cell membrane. In addition to glucose, some glucose transporters can also aid the movement of other hexoses such as fructose, mannose, and galactose.
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Diabetes Mellitus: Type 2 and Gestational01:22

Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
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Phase II biotransformation reactions are essential for detoxifying and eliminating xenobiotics, including many pharmaceutical compounds. These reactions typically involve conjugation, the covalent attachment of polar endogenous groups such as glucuronic acid, sulfate, methyl, or acetyl moieties to functional groups introduced during Phase I metabolism. The resulting conjugates are more water-soluble, enabling efficient renal or biliary excretion.The major classes of Phase II enzymes include...
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

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In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...
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One-step Metabolomics: Carbohydrates, Organic and Amino Acids Quantified in a Single Procedure
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Published on: June 25, 2010

Glutaric aciduria type 2 and newborn screening: commentary.

Jerry Vockley1

  • 1University of Pittsburgh, School of Medicine and Graduate School of Public Health, Departments of Pediatrics and Human Genetics, Children's Hospital of Pittsburgh, 3705 Fifth Avenue, Pittsburgh, PA 15238, USA. gerard.vockley@chp.edu

Molecular Genetics and Metabolism
|November 9, 2007
PubMed
Summary

Glutaric aciduria type 2, detected by newborn screening, still led to adverse outcomes in three patients. Further long-term studies are needed to confirm newborn screening

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Area of Science:

  • Biochemistry
  • Genetics
  • Pediatrics

Background:

  • Glutaric aciduria type 2 (GA-2) is a rare metabolic disorder.
  • Expanded newborn screening (NBS) programs utilize tandem mass spectrometry for early GA-2 detection.
  • The primary goal of NBS for GA-2 is to reduce associated morbidity and mortality.

Discussion:

  • This study highlights three pediatric cases of GA-2.
  • Despite early identification through NBS, these patients experienced adverse clinical outcomes.
  • This suggests potential limitations in current NBS protocols or treatment strategies for GA-2.

Key Insights:

  • Early recognition of GA-2 via NBS does not guarantee favorable outcomes.
  • The effectiveness of NBS in altering the long-term prognosis of GA-2 requires further investigation.
  • Adverse outcomes underscore the need for improved therapeutic interventions post-diagnosis.

Outlook:

  • Long-term follow-up studies are crucial to evaluate the true impact of NBS on GA-2 patient outcomes.
  • Research into novel treatment approaches for GA-2 is warranted.
  • Optimizing management strategies following NBS detection is essential for improving patient prognosis.