Related Experiment Videos
Management of acute and cutaneous porphyrias
1Department of Medical Biochemistry, University of Wales College of Medicine, Cardiff, UK.
Insights
Porphyrias are rare genetic disorders affecting heme biosynthesis. Prompt diagnosis and treatment, including lifestyle changes, are crucial for managing acute neurovisceral symptoms and cutaneous manifestations.
Area of Science:
- Biochemistry
- Genetics
- Internal Medicine
Background:
- Porphyrias are a group of inherited disorders impacting the heme biosynthesis pathway.
- These conditions manifest as acute neurovisceral crises or cutaneous lesions due to porphyrin accumulation.
Purpose of the Study:
- To summarize the clinical presentation, diagnosis, and management of various porphyria types.
- To highlight the importance of early intervention and long-term care for patients with porphyria.
Main Methods:
- Review of clinical features and established treatment protocols for acute and cutaneous porphyrias.
- Discussion of diagnostic markers such as urinary porphobilinogen levels.
- Emphasis on supportive care, lifestyle modifications, and genetic counseling.
Main Results:
- Acute porphyrias require immediate treatment with heme preparations and supportive care for life-threatening symptoms.
- Cutaneous porphyrias are managed by sun avoidance, with specific treatments like beta-carotene, phlebotomy, or chloroquine depending on the type.
- Bone marrow transplantation is a successful option for severe congenital erythropoietic porphyria.
Conclusions:
- Effective management of porphyrias involves prompt diagnosis, specific and supportive treatments, and patient/family counseling.
- Lifestyle modifications are essential for preventing acute attacks and managing chronic symptoms.
- Tailored therapeutic strategies are necessary for different porphyria subtypes to improve patient outcomes.
Abstract:
The porphyrias comprise a group of disorders of the haem biosynthesis pathway that can present with acute neurovisceral symptoms, skin lesions or both. Acute porphyrias present with severe abdominal pain, confusion and seizures which may be life-threatening. Specific treatment with haem preparations should be instituted as soon as possible following confirmation of increased excretion of porphobilinogen in the urine. Supportive treatment includes opiate analgesia, monitoring for and treating complications such as hypertension and hyponatraemia. Follow-up should include counselling on lifestyle modification involving avoidance of alcohol, smoking and known porphyrogenic drugs and diet. Identification and counselling of at risk relatives is essential. The cutaneous porphyrias result from porphyrin-induced photosensitivity and can present with either acute photosensitivity or skin fragility and blisters. All cutaneous porphyrias can be alleviated by avoidance of sunlight. Treatment of erythropoietic protoporphyria involves administering large doses of beta-carotene, which may improve tolerance to sunlight. Porphyria cutanea tarda can be effectively treated by phlebotomy or low dose chloroquine. Congenital erythropoietic porphyria is a rare, early onset, severe, photomutilating condition for which bone marrow transplantation has been shown to be successful.