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Journal of Parasitology Research
Volume 2015, Article ID 608604, 5 pages
Research Article

Lack of Association between Toxocara Exposure and Suicide Attempts in Psychiatric Patients

1Biomedical Research Laboratory, Faculty of Medicine and Nutrition, Juárez University of Durango State, 34000 Durango, DGO, Mexico
2Institute for Scientific Research “Dr. Roberto Rivera Damm”, Juárez University of Durango State, 34000 Durango, DGO, Mexico

Received 13 July 2015; Revised 21 August 2015; Accepted 23 August 2015

Academic Editor: Remington L. Nevin

Copyright © 2015 Cosme Alvarado-Esquivel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Infection with Toxocara may affect the central nervous system. A high seroprevalence of Toxocara infection has been reported in psychiatric patients. To the best of our knowledge, there is no previous report about an association of Toxocara infection with suicide attempts. Therefore, we sought to determine whether Toxocara exposure is associated with suicide attempts in psychiatric patients. We studied 282 psychiatric outpatients (156 with suicide attempts and 126 without suicide attempts). Sera of patients were analyzed for the presence of anti-Toxocara IgG antibodies by using a commercially available enzyme immunoassay. One of the 156 (0.6%) suicide attempters and 1 (0.8%) of the 126 controls were positive for anti-Toxocara IgG antibodies (OR = 0.80; 95% CI: 0.04–13.02; ). Toxocara seropositivity was significantly higher () in male patients with consumption of raw dried goat meat than male patients without this consumption. Results suggest that Toxocara exposure is not associated with suicide attempts in psychiatric outpatients in Durango City, Mexico. However, further studies with larger samples sizes to confirm our results should be conducted. Too few patients were seropositive to assess further associations of Toxocara exposure with sociodemographic, clinical, and behavioral characteristics of the psychiatric patients.