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Related Experiment Videos

Arylsulfatase A pseudodeficiency incidence in Turkey.

S Emre1, M Topçu, M Terzioğlu

  • 1Department of Medical Biology, Hacettepe University Faculty of Medicine, Ankara, Turkey.

The Turkish Journal of Pediatrics
|August 11, 2000
PubMed
Summary

Pseudodeficiency (Pd) in arylsulfatase A (ASA) is common in healthy people, causing enzyme activity similar to metachromatic leukodystrophy (MLD). This study found the Pd allele incidence in Turkey to be 11.5%.

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Area of Science:

  • Biochemistry
  • Genetics
  • Enzyme activity

Background:

  • Pseudodeficiency (Pd) in arylsulfatase A (ASA) is a frequent condition in healthy individuals.
  • It causes reduced ASA enzyme activity, mimicking metachromatic leukodystrophy (MLD).
  • The incidence of the Pd allele varies significantly across populations, being 10-20 times higher than MLD.

Purpose of the Study:

  • To determine the incidence of the ASA Pd allele in the Turkish population.
  • To investigate the presence of the Pd allele in patients diagnosed with MLD.

Main Methods:

  • Genotyping of healthy individuals and MLD patients to identify ASA Pd alleles.
  • Population-based incidence estimation.

Main Results:

Related Experiment Videos

  • Twelve out of 52 unrelated healthy individuals (23%) were heterozygous for the ASA Pd allele.
  • The estimated incidence of the Pd allele in the Turkish population was 11.5%.
  • One out of 18 MLD patients was homozygous for the Pd allele, and another was heterozygous.

Conclusions:

  • The ASA Pd allele is prevalent in the Turkish population, with a significant carrier frequency.
  • The findings highlight the importance of considering Pd allele frequency in genetic counseling and MLD diagnosis.
  • Further research is needed to understand the full clinical implications of ASA pseudodeficiency.