Wilson Disease
What is Wilson Disease?
Wilson Disease is a rare autosomal recessive genetic disorder characterized by defective copper metabolism, leading to toxic copper accumulation in the liver, brain, kidneys, and other organs. If untreated, it can cause progressive liver failure, neurological symptoms, and psychiatric disturbances.
Paragraph 1
Paragraph 2
Genetic Basis and Pathophysiology
Wilson Disease is caused by mutations in the ATP7B gene on chromosome 13, which encodes a copper-transporting ATPase. The defective protein impairs copper excretion into bile, causing accumulation in hepatocytes. Excess copper is released into the bloodstream, depositing in the brain (basal ganglia), kidneys, cornea, and other tissues, leading to multi-organ dysfunction.
Systemic Involvement
Liver
- Chronic hepatitis, hepatomegaly
- Cirrhosis and fibrosis
- Acute liver failure in severe cases
- Fatigue, jaundice, abdominal pain
Neurological
- Tremors, dystonia, and chorea
- Parkinsonian features (rigidity, bradykinesia)
- Speech and swallowing difficulties
- Seizures in rare cases
Psychiatric
- Depression, anxiety, irritability
- Personality changes and cognitive decline
- Psychosis in severe copper accumulation
Ophthalmic
- Kayser-Fleischer rings: copper deposits in cornea visible via slit-lamp examination
- Sunflower cataracts (rare)
Renal
- Proteinuria
- Renal tubular dysfunction
- Nephrolithiasis in some cases
Symptoms
Symptoms vary depending on the age and organ involvement. Early liver disease may be asymptomatic or present with fatigue and jaundice. Neurological and psychiatric symptoms usually appear in adolescence or early adulthood.
Diagnosis
- Serum ceruloplasmin: usually low
- 24-hour urinary copper excretion: elevated
- Liver biopsy for hepatic copper content
- Slit-lamp examination for Kayser-Fleischer rings
- Genetic testing for ATP7B mutations
- Brain MRI in neurological involvement
Treatment
The main goal is to remove excess copper and prevent further accumulation:
- Chelation therapy: D-Penicillamine or Trientine
- Zinc therapy: inhibits copper absorption in the gut
- Liver transplantation in cases of fulminant liver failure
- Symptomatic management for neurological and psychiatric complications
Lifestyle and Preventive Measures
- Avoid high-copper foods: shellfish, liver, chocolate, nuts, mushrooms
- Maintain a balanced diet rich in fruits, vegetables, and whole grains
- Regular monitoring of copper levels and organ function
- Early treatment of infections and other liver stressors
- Supportive therapies: physical therapy, speech therapy for neurological symptoms
- Psychological support and counseling for patients and families
Complications if Untreated
- Progressive liver disease: cirrhosis, hepatic failure
- Severe neurological disability
- Psychiatric disorders leading to social and occupational impairment
- Kidney failure in advanced cases
Red Flags
- Persistent jaundice or fatigue
- New-onset tremors or movement disorders
- Behavioral or personality changes
- Proteinuria or kidney dysfunction
- Presence of Kayser-Fleischer rings on eye exam
FAQ
A: There is no complete cure, but early treatment with chelators and zinc can control copper levels and prevent organ damage.
A: Symptoms usually appear between ages 5 and 35, often starting with liver disease in children and neurological signs in adolescents or young adults.
A: Yes, it is an autosomal recessive genetic disorder. Both parents must carry a mutation in the ATP7B gene.
A: Diet helps reduce copper intake but cannot replace medical treatment with chelation or zinc therapy.
A: Regular follow-up every 3-6 months with liver function tests, copper levels, and neurological assessment is recommended.
