Inborn errors of metabolic diseases in Malaysia: a preliminary report of maple syrup urine diseases for 1993

I Zakiah1, Y N Ashikin, S M Aisiah

  • 1Biochemistry Division, Institute For Medical Research, Jalan Pahang, Kuala Lumpur.

Insights

Inborn metabolic diseases, like maple syrup urine disease (MSUD), may cause high childhood mortality in Malaysia. HPLC confirmed amino acid disorders in 4.2% of tested children, highlighting the need for national screening.

Area of Science:

  • Biochemistry
  • Pediatrics
  • Medical Diagnostics

Background:

  • Malaysia has improved healthcare, controlling infectious diseases.
  • Perinatal and unknown childhood diseases remain a significant cause of mortality (10.3%).
  • Inborn metabolic diseases are investigated as a potential cause of unexplained childhood deaths.

Purpose of the Study:

  • To investigate the prevalence of inborn metabolic diseases, specifically amino acid disorders, in Malaysian children.
  • To utilize high-performance liquid chromatography (HPLC) for confirming suspected cases.

Main Methods:

  • Screening of 404 samples from across Malaysia in 1993.
  • Confirmation of abnormal results from one-dimensional thin-layer chromatography using HPLC.
  • Analysis of patient demographics and clinical presentations.

Main Results:

  • 41% of confirmed cases showed generalized aminoacidurias.
  • 4.2% of confirmed cases were diagnosed with maple syrup urine disease (MSUD).
  • Affected patients ranged from 11 days to 6 years old, predominantly Malay males with MSUD-suggestive symptoms.

Conclusions:

  • Inborn metabolic diseases, particularly amino acid disorders like MSUD, are a significant concern in Malaysian pediatric mortality.
  • Further research is needed to develop investigation, management, and national screening protocols.
  • HPLC is a valuable confirmatory technique for diagnosing these disorders.

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