Different presence of Chlamydia pneumoniae, herpes simplex virus type 1, human herpes virus 6, and Toxoplasma gondii in schizophrenia: meta-analysis and analytical study Gutiérrez-Fernández, José Luna Del Castillo, Juan De Dios Mañanes-González, Sara Carrillo-Ávila, José Antonio Gutiérrez, Blanca Cervilla, Jorge A. Sorlozano Puerto, Antonio Meta-analysis Analytical study Chlamydia pneumoniae Herpes simplex virus type 1 Human herpes virus 6 Toxoplasma gondii Schizophrenia In the present study we have performed both a meta-analysis and an analytical study exploring the presence of Chlamydia pneumoniae, herpes simplex virus type 1, human herpes virus 6, and Toxoplasma gondii antibodies in a sample of 143 schizophrenic patients and 143 control subjects. The meta-analysis was performed on papers published up to April 2014. The presence of serum immunoglobulin G and immunoglobulin A was performed by enzyme-linked immunosorbent assay test. The detection of microbial DNA in total peripheral blood was performed by nested polymerase chain reaction. The meta-analysis showed that: 1) C. pneumoniae DNA in blood and brain are more common in schizophrenic patients; 2) there is association with parasitism by T. gondii, despite the existence of publication bias; and 3) herpes viruses were not more common in schizophrenic patients. In our sample only anti-Toxoplasma immunoglobulin G was more prevalent and may be a risk factor related to schizophrenia, with potential value for prevention. 2015-04-17T10:56:23Z 2015-04-17T10:56:23Z 2015 info:eu-repo/semantics/article Gutiérrez-Fernández, J.; et al. Different presence of Chlamydia pneumoniae, herpes simplex virus type 1, human herpes virus 6, and Toxoplasma gondii in schizophrenia: meta-analysis and analytical study. Neuropsychiatric Disease and Treatment, 11: 843-852 (2015). [http://hdl.handle.net/10481/35709] 1178-2021 http://hdl.handle.net/10481/35709 10.2147/NDT.S79285 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Dove Press