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  • Directional and fluctuating asymmetry in finger and a-b ridge counts in psychosis: A case-control study

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    Author(s)
    Saha, Sukanta
    Loesch, Danuta
    Chant, David
    Welham, Joy
    El-Saadi, Ossama
    Fañanás, Lourdes
    Mowry, Bryan
    McGrath, John
    Griffith University Author(s)
    McGrath, John J.
    Year published
    2003
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    Abstract
    Background Several studies have reported alterations in finger and a-b ridge counts, and their derived measures of asymmetry, in schizophrenia compared to controls. Because ridges are fully formed by the end of the second trimester, they may provide clues to disturbed early development. The aim of this study was to assess these measures in a sample of patients with psychosis and normal controls. Methods Individuals with psychosis (n = 240), and normal controls (n = 228) were drawn from a catchment-area case-control study. Differences in finger and a-b ridge count and Fluctuating Asymmetry were assessed in three group ...
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    Background Several studies have reported alterations in finger and a-b ridge counts, and their derived measures of asymmetry, in schizophrenia compared to controls. Because ridges are fully formed by the end of the second trimester, they may provide clues to disturbed early development. The aim of this study was to assess these measures in a sample of patients with psychosis and normal controls. Methods Individuals with psychosis (n = 240), and normal controls (n = 228) were drawn from a catchment-area case-control study. Differences in finger and a-b ridge count and Fluctuating Asymmetry were assessed in three group comparisons (non-affective psychosis versus controls; affective psychosis versus controls; non-affective psychosis versus affective psychosis). The analyses were performed separately for males and females. Results There were no significant group differences for finger nor a-b ridge counts. While there were no group difference for Directional Asymmetry, for Fluctuating Asymmetry measures men with non-affective psychosis had significantly higher fluctuating asymmetry of the index finger ridge count (a) when compared to controls (FA-correlation score, p = 0.02), and (b) when compared to affective psychosis (adjusted FA-difference score, p = 0.04). Conclusion Overall, measures of finger and a-b ridge counts, and their derived measures of directional and fluctuating asymmetry were not prominent features of psychosis in this sample. While directional asymmetry in cerebral morphology is reduced in schizophrenia, this is not reflected in dermatoglyphic variables.
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    Journal Title
    BMC Psychiatry
    Volume
    3
    Issue
    Article number 3
    DOI
    https://doi.org/10.1186/1471-244X-3-3
    Copyright Statement
    © 2003 Saha et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purposes. DOI: https://doi.org/10.1186/1471-244X-3-3
    Note
    Pagination is not for citation purposes.
    Subject
    Psychiatry (incl. Psychotherapy)
    Clinical Sciences
    Public Health and Health Services
    Psychology
    Publication URI
    http://hdl.handle.net/10072/27093
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    • Journal articles

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