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Published on: June 26, 2010
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.
Abstract:
The Malaysian level of health care has greatly improved so that many of the infectious diseases are now under control. However, perinatal death or death due to unknown childhood diseases remains high (10.3%) being second on the list of causes of death amongst Malaysians. Could inborn metabolic diseases be the main cause of death among these children? Recently, with our success in the development of confirmatory techniques for amino acid disorders using high performance liquid chromatography (HPLC), we have examined 404 samples received from all over the country in 1993. Each specimen with abnormal findings from screening tests by one-dimensional thin layer chromatography was confirmed using HPLC. 41% had generalized aminoacidurias and 4.2% had maple syrup urine disease (MSUD). Patients were aged between 11 days to 6 years. Most of them were Malay males and presented with a history suggestive of MSUD. With this preliminary finding, further studies will be carried out in order to have an investigation and management protocol for the diseases and more importantly to formulate a strategy of screening for the country.
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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