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Prevalence of Seizure In PKU: An Analytic Historical Study

  • Parvaneh KARIMZADEH
  • Mohammad Reza AALAEI
  • Feisal RAHIMPOUR

Iranian Journal of Child Neurology, Vol. 4 No. 2 (2010), 6 October 2010 , Page 15-20
https://doi.org/10.22037/ijcn.v4i2.1865 Published 6 October 2010

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Abstract

Objective

Phenylketonuria (PKU) is an autosomal recessive metabolic genetic disorder characterized by a deficiency in the hepatic enzyme phenylalanine hydroxylase (PAH) which can cause problems with brain development, leading to progressive mental retardation, brain damage, and seizures. In this study we evaluated the frequency of seizure, EEG abnormality and behavioral disorders.

Materials & Methods 

In this case study, 94 PKU children aged between 1 month and 23 years who were referred to Mofid children Hospital between 2009 and 2010 were enrolled.

Patients were age and sex matched. Statistical tests were used for comparing patients' data.

Results

 The mean age of patients was 8.4 years. Parents were relatives in 80.9% of the cases (76 patients). Of all, 43% (45 patients) had seizure but EEG was abnormal only in 81% of them (35 patients out of 43 patients). Totally, EEG was abnormal in 67% of the cases (63 patients) of whom 44.4% (28 patients of 63 patients) did not have seizure. Therefore, there was a significant relationship between seizure and EEG abnormality. The phenylalanine level ranged from 8mg/dL to 50mg/dL (mean: 18.88 mg/dL) at the time of diagnosis and from 0.4mg/dL to 18mg/dL (mean: 7.37mg/dL) at the time of evaluation. On the other hand,we observed abnormal behaviors in all EEG abnormalities and there was a significant relationship between EEG abnormality and behavioral disorders.

Conclusion

In our study, the prevalence of seizure was less than EEG abnormality and there was a significant relationship between EEG abnormalities and behavioral disorders in patients with Phenylketonuria regardless of seizure.The authors believe that treatment of EEG abnormalities may lead to the correction of behavioral disorders in these patients.

 

Keywords:
  • Phenylketonuria
  • Seizure
  • EEG abnormality
  • behavioral disorder
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How to Cite

KARIMZADEH, P., AALAEI, M. R., & RAHIMPOUR, F. (2010). Prevalence of Seizure In PKU: An Analytic Historical Study. Iranian Journal of Child Neurology, 4(2), 15-20. https://doi.org/10.22037/ijcn.v4i2.1865
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