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    Distribution of Antithyroid Peroxidase Antibody in Patients with Clinically Suspected Thyroid Dysfunction

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    Background: Thyroid  peroxide had  been  characterized  as  an  integral  membrane  hemoprotein  catalyzes  thyroglobulin  iodination as well  as  the  coupling  of  the  di-iodotyrosine  residues  in  the  thyroglobulin molecule  to  form  thyroxine.  The  prevalence  of  Thyroid  peroxide autoantibody  varies in different types of thyroid gland diseases   and  is positive in 5-15% of healthy individuals higher  in  elderly,  but  mostly  in  low  titers. Objective: The  study  was  conducted  to  evaluate  the  relation  between  anti- Thyroid  peroxide antibody  and  T3,  T4,  and  TSH as thyroid function parameters  in  thyroid  disease patients. Patients and Methods: In  526  individuals  suspected  of  having  thyroid  disease,  from  January  2011  to  October  2011  in  Al-Yarmouk  Teaching  Hospital. Measurement of anti-Thyroid  peroxide antibody  (ELISA)  and  T3,  T4,  and  TSH  (RIA)  was done.  Results: Hyperthyroid  patients  constitute  about  287  patients  (54.56%)  of  total  sample  while  176  patients  (33.46%)  were  hypothyroid  and  63  individuals  (11.98%)  were  euthroid.392  individuals  (74.52%  of  the  patients)  were  females  while  134  (25.48%)  were  males.  Our  results  confirm  that  137  (26.05%)  of  the  patients  were  Thyroid  peroxide positive.  100  female patients  (72.99%)  and  37  male patients (27.01%).  Levels  of  T3,  T4,  and  TSH  in  individuals  with  negative  and  positive  anti- Thyroid  peroxide antibody  were  statically  insignificant. Conclusion: A  correlation  between  TSH,  T4  andT3  levels  and  abnormal  anti- Thyroid  peroxide antibodies  was  not  proved
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