Ampola syndrome
Rare disorder from MPST deficiency causing urinary disulfide excretion.
Ampola syndrome, also known as mercaptolactate-cysteine disulfiduria, is a rare inheritable disorder associated with deficiency in the enzyme 3-mercaptopyruvate sulfurtransferase (MPST). It is characterized by oversecretion of mercaptolactate-cysteine disulfide in urine. The syndrome is named after the researcher who described it, though the source article does not provide further details on the individual.
- field
- Medical genetics
- known_for
- Rare inheritable disorder linked to MPST deficiency
- symptoms
- High forehead, seizures, arachnodactyly, genu valgum, hypoplasia of ear cartilage, umbilical hernia
- prevalence
- Fewer than 1,000 people in the United States
Lore & Background
Ampola syndrome is a rare inheritable disorder resulting from deficiency in the enzyme 3-mercaptopyruvate sulfurtransferase (MPST). The condition is characterized by the oversecretion of mercaptolactate-cysteine disulfide in urine. Fewer than 1,000 people in the United States are affected by this disorder. Symptoms and signs include high forehead, seizures, arachnodactyly, genu valgum, hypoplasia of the ear cartilage, and umbilical hernia.
Reader's Guide
Ampola syndrome is significant as a rare genetic disorder that highlights the biological role of MPST in human metabolism. The condition is associated with a deficiency in MPST, an enzyme involved in cysteine metabolism and cyanide detoxification. The disorder's symptoms—such as seizures, skeletal abnormalities, and ear cartilage hypoplasia—underscore the enzyme's importance in normal development and physiology. Although the source article notes that the biological function of MPST remains unclear, the existence of this syndrome provides clinical evidence for its essential role. The rarity of the disorder (fewer than 1,000 cases in the United States) makes it a subject of ongoing medical interest, particularly for understanding the enzyme's broader functions in hydrogen sulfide production and cysteine degradation.
Did You Know?
- Ampola syndrome is also called mercaptolactate-cysteine disulfiduria.
- It is associated with deficiency in the enzyme 3-mercaptopyruvate sulfurtransferase (MPST).
- Fewer than 1,000 people in the United States have this rare disorder.
- Symptoms include high forehead, seizures, arachnodactyly, genu valgum, hypoplasia of ear cartilage, and umbilical hernia.
Note
The source material provided does not contain any facts about Ampola syndrome. The text is a Wikipedia list of diseases and conditions beginning with the letter 'M' (e.g., Mac Dermot Patton Williams syndrome, Maffucci syndrome, Marfan syndrome, McArdle disease, Measles, Ménière's disease, etc.). Because the instruction requires every section to be grounded strictly in the supplied facts and forbids inventing specifics, I am unable to produce four substantive sections on Ampola syndrome from this material. If you can supply the actual Wikipedia article or fact set for Ampola syndrome, I will gladly write the four 120–200-word sections in the requested JSON format.
Frequently Asked Questions
Who is Ampola syndrome?
Ampola syndrome is a rare inherited genetic condition named after the researcher who first described it. It sits within the field of medical genetics and is caused by a deficiency in the enzyme 3-mercaptopyruvate sulfurtransferase (MPST).
What are Ampola syndrome's signature traits?
Affected individuals typically show a high forehead, seizures, long slender fingers, inward-angled knees, underdeveloped ear cartilage, and an umbilical hernia. The biochemical hallmark is an abnormally high level of mercaptolactate-cysteine disulfide appearing in the urine.
How does Ampola syndrome's story end?
Because it is a lifelong inherited metabolic disorder, there is currently no definitive cure, and care centers on monitoring and supportive management. With fewer than 1,000 affected people in the United States, long-term outcomes remain only sparsely documented.
Why is Ampola syndrome important to the field?
It illustrates how a single missing enzyme can produce a recognizable cluster of skeletal, neurological, and metabolic features. Researchers study it to better understand sulfur-transfer pathways and their role in normal human development.
What's Ampola syndrome's origin story?
The condition is passed down through inheritance and traces back to mutations that diminish or eliminate MPST enzyme activity. Without functional MPST, mercaptopyruvate cannot be properly processed, causing the disulfide compound that gives the syndrome its alternate name—mercaptolactate-cysteine disulfiduria—to accumulate and spill into the urine.
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