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Adrenoleucodystrophy: dermatological findings and skin surface lipid study
M Papini1, P Calandra, S Calvieri
1Clinica Dermatologica R, Università di Perugia, Terni, Italia.
Dermatology (Basel, Switzerland)
|January 1, 1994
Summary
X-linked adrenoleukodystrophy (ALD) affects very-long-chain fatty acid metabolism. Skin lipid analysis revealed elevated lignoceric acid, suggesting a potential non-invasive diagnostic method for ALD.
Area of Science:
- Biochemistry
- Genetics
- Dermatology
Background:
- X-linked adrenoleukodystrophy (ALD) is a rare genetic disorder characterized by impaired very-long-chain fatty acid (VLCFA) metabolism.
- ALD primarily affects the adrenal glands, testes, and central nervous system, leading to progressive neurological decline.
Observation:
- A 29-year-old male patient with ALD presented with distinct cutaneous manifestations including scalp alopecia, seborrhea, ichthyosis-like scaling, and pseudo-acanthosis nigricans.
- Microscopic examination of scalp hair revealed structural abnormalities, such as trichorrhexis nodosa-like fractures.
Findings:
- Analysis of skin surface lipids demonstrated a significant accumulation of lignoceric acid (C24:0), constituting over 60% of detectable fatty acids.
- This pattern of VLCFA accumulation in skin lipids mirrored findings typically observed in plasma, confirming a systemic metabolic disturbance.
Implications:
- The elevated lignoceric acid levels in skin lipids correlate with ALD's underlying metabolic defect.
- Investigating skin surface lipid composition offers a promising non-invasive approach for ALD diagnosis and monitoring.
- This research highlights the potential of dermatological findings as biomarkers for systemic metabolic disorders.