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Kinetics of3H-Serotonin uptake by platelets in infantile autism and developmental language disorder (including five pairs of twins)

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Abstract

The kinetics of 5-HT uptake by platelets was studied in cases of infantile autism and developmental language disorder (DLD) and normal subjects. Two patients of the autism group were twins, and the seven patients of the DLD group were members of four pairs of twins. The Vmax values (means ±SD) for autism and DLD were 6.46±.90 pmol 5-HT/107 cells/min and 4.85±1.50 pmol 5-HT/107 cells/min, respectively. These values were both significantly higher than that of 2.25±.97 pmole 5-HT/107 cells/min for normal children. The Km values of the three groups were not significantly different. Data on the five pairs of twins examined suggested that the elevated Vmax of 5-HT uptake by platelets was determined genetically.

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Authors and Affiliations

  1. Department of Psychiatry, School of Medicine, Niigata University, Asahimachi 1, Niigata-shi, 951, Japan

    Takemi Katsui, Masahide Okuda & Sagako Usuda

  2. Niigata Prefectural Child Guidance Clinic, Japan

    Takeshi Koizumi

Authors
  1. Takemi Katsui
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  2. Masahide Okuda
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  3. Sagako Usuda
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  4. Takeshi Koizumi
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We thank Prof. M. Satake for many consultations.

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Katsui, T., Okuda, M., Usuda, S. et al. Kinetics of3H-Serotonin uptake by platelets in infantile autism and developmental language disorder (including five pairs of twins). J Autism Dev Disord 16, 69–76 (1986). https://doi.org/10.1007/BF01531579

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  • DOI: https://doi.org/10.1007/BF01531579

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