Cited by 664Schizophrenia research and treatmentTryptophan and brain disordersMaternal Mental Health During Pregnancy and Postpartum

The DOI matches its Crossref record; 395 of the 395 references it cites were found in a registry or an index.

The environment and susceptibility to schizophrenia

Open access
Brown, Alan S.·2011·Progress in Neurobiology

Abstract

In the present article the putative role of environmental factors in schizophrenia is reviewed and synthesized. Accumulating evidence from recent studies suggests that environmental exposures may play a more significant role in the etiopathogenesis of this disorder than previously thought. This expanding knowledge base is largely a consequence of refinements in the methodology of epidemiologic studies, including birth cohort investigations, and in preclinical research that has been inspired by the evolving literature on animal models of environmental exposures. This paper is divided into four sections. In the first, the descriptive epidemiology of schizophrenia is reviewed. This includes general studies on incidence, prevalence, and differences in these measures by urban-rural, neighborhood, migrant, and season of birth status, as well as time trends. In the second section, we discuss the contribution of environmental risk factors acting during fetal and perinatal life; these include infections [e.g. rubella, influenza, Toxoplasma gondii (T. gondii), herpes simplex virus type 2 (HSV-2)], nutritional deficiencies (e.g., famine, folic acid, iron, vitamin D), paternal age, fetal/neonatal hypoxic and other obstetric insults and complications, maternal stress and other exposures [e.g. lead, rhesus (Rh) incompatibility, maternal stress]. Other putative neurodevelopmental determinants, including cannabis, socioeconomic status, trauma, and infections during childhood and adolescence are also covered. In the third section, these findings are synthesized and their implications for prevention and uncovering biological mechanisms, including oxidative stress, apoptosis, and inflammation, are discussed. Animal models, including maternal immune activation, have yielded evidence suggesting that these exposures cause brain and behavioral phenotypes that are analogous to findings observed in patients with schizophrenia. In the final section, future studies including new, larger, and more rigorous epidemiologic investigations, and research on translational and clinical neuroscience, gene-environment interactions, epigenetics, developmental trajectories and windows of vulnerability, are elaborated upon. These studies are aimed at confirming observed risk factors, identifying new environmental exposures, elucidating developmental mechanisms, and shedding further light on genes and exposures that may not be identified in the absence of these integrated approaches. The study of environmental factors in schizophrenia may have important implications for the identification of causes and prevention of this disorder, and offers the potential to complement, and refine, existing efforts on explanatory neurodevelopmental models.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.pneurobio.2010.09.003

Cites

395 of 395 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Items 201–395 of 395

Flagged first, then by citations

Research works printed but not linked: 7

  1. Bradley-Moore, 2002, Modeling the effect of advanced paternal age on progeny behavior in mice, Dev. Psychobiol., 41, 230
  2. Brown, A.S., Bresnahan, M., Susser, E.S., Sadock, B.J., Sadock, V.A., 2005a. Schizophrenia: environmental epidemiology. Comprehensive Textbook of Psychiatry. Lippincott, Williams, Wilkins, Baltimore, MD, pp. 1371–1380.
  3. Dalman, 2001, Signs of asphyxia at birth and risk of schizophrenia—Population-based case–control study, Br. J. Psychiatry, 179, 403, 10.1192/bjp.179.5.403 · DOI
  4. Dukes, C.S., Luft, B.J., Durack, D.T., Scheld, W.M., Whitley, R.J., 1997. Toxoplasmosis. Infections of the Central Nervous System. Lippincott-Raven, Philadelphia, pp. 785–806.
  5. Piontkewitz, 2007, Post-pubertal emergence of schizophrenia like abnormalities following prenatal maternal immune system activation and their prevention: modeling the disorder and its prondrome, Int. Brain Res. Org., 25
  6. Riley, B.P., Kendler, K.S., Sadock, B.J., Sadock, V.A., 2005. Schizophrenia: geneics. Comprehensive Textbook of Psychiatry. Lippincott Williams & Wilkins, Philadelphia, pp. 1354–1371.
  7. Tramer, 1929, Über die biologische Bedeutung des Geburtsmonates, insbesondere für die Psychoseerkrankung, Schweizer Archiv fur Neurologie und Psychiatrie, 24, 17

Cited by

Sorted by citations

See all 664

Metadata

Authors
Brown, A. S.
Affiliations
New York State Psychiatric Institute (US)
Corresponding author
Brown, Alan S.
Venue
Progress in Neurobiology
Publisher
Elsevier BV
Published
2011-01
Volume
93
Issue
1
Pages
23-58
ISSN
0301-0082 (ISSN-L)
OpenAlex
W2042914870
Cited by
664
References
395
Citations by year
2026: 19 · 2025: 27 · 2024: 35 · 2023: 41 · 2022: 29 · 2021: 39 · 2020: 40 · 2019: 37 · 2018: 41 · 2017: 32 · 2016: 55 · 2015: 61 · 2014: 65 · 2013: 55 · 2012: 61
FWCI
6.37
Type
journal article
Language
en
Open access
Locations
  • Progress in Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (K02MH065422, R01MH082052)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Maternal Mental Health During Pregnancy and Postpartum
Keywords
schizophrenia, environmental risk factors, etiopathogenesis, prenatal exposure, perinatal exposure, maternal infection, Toxoplasma gondii, influenza, rubella, herpes simplex virus type 2, nutritional deficiency, paternal age, fetal hypoxia, pregnancy complications, maternal stress, lead exposure, Rh incompatibility, cannabis, socioeconomic status, childhood trauma, brain development, maternal immune activation, oxidative stress, inflammation, apoptosis, gene-environment interaction, epigenetics, window of vulnerability, incidence and prevalence, season of birth, migration, prevention
MeSH terms
Animals, Environment, Environmental Exposure, Female, Humans, Nutritional Status, Pregnancy, Prenatal Exposure Delayed Effects, Risk Factors, Schizophrenia, Genetic Predisposition to Disease

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review