Phenol sulfur transferase deficiency

Phenol Sulfur Transferase Deficiency

Diagram of the phenol sulfur transferase reaction.

Phenol sulfur transferase deficiency is a metabolic disorder characterized by a deficiency in the enzyme phenol sulfur transferase (PST). This enzyme is crucial for the metabolism of phenolic compounds, which are found in various foods and environmental substances. The deficiency can lead to an accumulation of phenolic compounds in the body, potentially causing a range of symptoms and health issues.

Enzyme Function

Phenol sulfur transferase is an enzyme that catalyzes the transfer of a sulfur group from a donor molecule to a phenolic compound. This process, known as sulfation, is essential for the detoxification and excretion of phenolic substances. The enzyme is part of the sulfotransferase family, which plays a significant role in the metabolism of hormones, drugs, and xenobiotic compounds.

Genetic Basis

Illustration of a mutation affecting the PST gene.

The deficiency in phenol sulfur transferase is often linked to genetic mutations that affect the production or function of the enzyme. These mutations can be inherited in an autosomal recessive pattern, meaning that an individual must inherit two copies of the mutated gene to exhibit symptoms of the deficiency. The specific genes involved in PST deficiency are still under investigation, but they are believed to be part of the SULT1A1 and SULT1A2 gene families.

Symptoms and Clinical Presentation

Individuals with phenol sulfur transferase deficiency may experience a variety of symptoms, which can vary in severity. Common symptoms include:

• Gastrointestinal disturbances
• Behavioral changes
• Skin rashes
• Headaches

These symptoms are thought to result from the accumulation of phenolic compounds, which can have toxic effects on the body.

Diagnosis

Diagnosing phenol sulfur transferase deficiency typically involves a combination of clinical evaluation and laboratory testing. Tests may include measuring the activity of PST in blood samples or genetic testing to identify mutations in the relevant genes. A detailed patient history and symptom assessment are also crucial for an accurate diagnosis.

Treatment and Management

Management of phenol sulfur transferase deficiency focuses on reducing the intake of phenolic compounds and supporting the body's detoxification processes. This may involve dietary modifications to avoid foods high in phenols, such as certain fruits, vegetables, and artificial additives. Supplements that support sulfation, such as magnesium and molybdenum, may also be recommended.

Related Pages

• Sulfotransferase
• Metabolic disorder
• Enzyme deficiency