Symmetry symptoms in obsessive-compulsive disorder: clinical and genetic correlates
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
;
38(1): 17-23, Jan.-Mar. 2016. tab
Article
Dans Anglais
| LILACS
| ID: lil-776495
ABSTRACT
Objective:
In obsessive-compulsive disorder (OCD), symmetry-related symptoms may be important. Although clinical correlates of symmetry-related symptoms have been identified in OCD, few data exist on genetic associations. Animal studies indicate involvement of dopamine in symmetry-related behavior, suggesting this may be relevant to analogous symptoms in OCD. Alterations in dopamine may also reflect environmental influences. However, the association of symmetry-related symptomatology, early adversity, and polymorphisms in dopaminergic genes has not been investigated in OCD.Methods:
Clinical information and polymorphisms in key dopaminergic genes were compared between OCD patients with primary symmetry symptoms and those without.Results:
OCD patients with primary symmetry symptoms comprised 46.6% (n=210) of the sample (n=451), and were older (p < 0.01), had longer illness duration (p < 0.01), higher OCD severity scores (p = 0.01), and greater comorbidity (p < 0.01) than those without. In Caucasians (n=343), genotype frequency differed significantly between groups for ANKK1 rs1800497, with more OCD patients with symmetry symptoms being homozygous for the A2 (CC) genotype (χ2 = 7.296; p = 0.026).Conclusion:
Symmetry symptoms have some distinct clinical features and may represent a marker of severity in OCD. However, clinical associations, in combination with the association found with the ANKK1 rs1800497 A2 variant, suggest that primary symmetry symptoms may represent a distinctive clinical and psychobiological profile.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Dopamine
/
Trouble obsessionnel compulsif
Type d'étude:
Etude diagnostique
/
Étude pronostique
Limites du sujet:
Adolescent
/
Adulte
/
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
Thème du journal:
Psychiatrie
Année:
2016
Type:
Article
Pays d'affiliation:
République d'Afrique du Sud
Institution/Pays d'affiliation:
University of Stellenbosch/ZA
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