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Blood groups and affective disorders.

N Takazawa1, T Kimura, S Nanko

  • 1Department of Psychiatry, Teikyo University School of Medicine, Tokyo, Japan.

The Japanese Journal of Psychiatry and Neurology
|December 1, 1988
PubMed
Summary
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Japanese patients with affective disorders show distinct blood group distributions. Specifically, higher frequencies of blood group B and Duffy (Fy(a+b+)) were observed, alongside altered Kidd blood group patterns in bipolar disorder patients.

Area of Science:

  • Genetics and Psychiatry
  • Population Genetics
  • Medical Genetics

Background:

  • Blood group antigens are genetically determined and their distributions can vary significantly across populations.
  • Previous research has explored associations between certain blood groups and various psychiatric disorders, though findings are often inconsistent.
  • Affective disorders, including Major Depression and Bipolar Disorder, represent a significant public health concern with complex etiologies.

Purpose of the Study:

  • To investigate the distribution of seven major blood group systems (ABO, MNSs, P, Rh, Duffy, Kidd, Xg) in Japanese patients diagnosed with affective disorders.
  • To compare blood group frequencies between different subtypes of affective disorders (Unipolar Depression, Bipolar Disorder) and healthy controls.
  • To identify potential genetic markers associated with affective disorders through blood group analysis.

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Main Methods:

  • Blood samples were collected from 118 Japanese patients diagnosed with affective disorders according to DSM-III criteria.
  • The study analyzed the frequencies of seven blood group systems: ABO, MNSs, P, Rh, Duffy, Kidd, and Xg.
  • Statistical comparisons were made between patient groups (overall affective disorders, Unipolar Disorder, Bipolar Disorder) and control populations.

Main Results:

  • A significantly higher frequency of the B blood group (ABO system) was observed in all patients with affective disorders compared to controls.
  • The Duffy blood group showed a higher frequency of Fy(a+b+) and a lower frequency of Fy(a+b-) in patients with affective disorders, Unipolar Disorder, and Bipolar Disorder compared to controls.
  • Patients with Bipolar Disorder exhibited a lower frequency of Jk(a+b+) and a higher frequency of Jk(a+b-) in the Kidd blood group compared to both controls and patients with Unipolar Disorder.

Conclusions:

  • The findings suggest a potential association between specific blood group profiles and affective disorders in the Japanese population.
  • The observed alterations in ABO, Duffy, and Kidd blood group distributions may indicate a genetic predisposition or linkage to affective disorders.
  • Further research is warranted to elucidate the biological mechanisms underlying these associations and their implications for understanding the pathogenesis of affective disorders.