Abstract
Toxoplasma gondii is a ubiquitous intracellular parasite which chronically infects 30-50% of the human population. While acquired infection is primarily asymptomatic several studies have suggested that such infections may contribute to neurological and psychiatric symptoms. Previous studies in rodents have demonstrated that T. gondii infection does not just kill its host, but alters the behavioral repertoire of an infected animal, making it more likely that predation with occur completing the parasite life cycle. The aim of the present study was to evaluate the behavioral changes in C57BL/6 mice chronically infected with the avirulent T. gondii (ME49, a Type II strain), in a comprehensive test battery. Infected mice demonstrated profound and widespread brain pathology, motor coordination and sensory deficits. In contrast, cognitive function, anxiety levels, social behavior and the motivation to explore novel objects were normal. The observed changes in behavior did not represent "gross" brain damage or dysfunction and were not due to targeted destruction of specific areas of the brain. Such changes point out the subtle interaction of this parasite with its intermediate hosts and are consistent with ideas about increased predation being an outcome of infection.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 528-537 |
| Number of pages | 10 |
| Journal | Microbes and Infection |
| Volume | 12 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2010 |
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Keywords
- Cognitive tests
- Latent infection
- Motor coordination
- Parasitology
- Social behavior
- Toxoplasma gondii
ASJC Scopus subject areas
- Microbiology
- Immunology
- Infectious Diseases
Cite this
Acquired infection with Toxoplasma gondii in adult mice results in sensorimotor deficits but normal cognitive behavior despite widespread brain pathology. / Gulinello, Maria E.; Acquarone, Mariana; Kim, John H.; Spray, David C.; Barbosa, Helene S.; Sellers, Rani; Tanowitz, Herbert B.; Weiss, Louis M.
In: Microbes and Infection, Vol. 12, No. 7, 07.2010, p. 528-537.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Acquired infection with Toxoplasma gondii in adult mice results in sensorimotor deficits but normal cognitive behavior despite widespread brain pathology
AU - Gulinello, Maria E.
AU - Acquarone, Mariana
AU - Kim, John H.
AU - Spray, David C.
AU - Barbosa, Helene S.
AU - Sellers, Rani
AU - Tanowitz, Herbert B.
AU - Weiss, Louis M.
PY - 2010/7
Y1 - 2010/7
N2 - Toxoplasma gondii is a ubiquitous intracellular parasite which chronically infects 30-50% of the human population. While acquired infection is primarily asymptomatic several studies have suggested that such infections may contribute to neurological and psychiatric symptoms. Previous studies in rodents have demonstrated that T. gondii infection does not just kill its host, but alters the behavioral repertoire of an infected animal, making it more likely that predation with occur completing the parasite life cycle. The aim of the present study was to evaluate the behavioral changes in C57BL/6 mice chronically infected with the avirulent T. gondii (ME49, a Type II strain), in a comprehensive test battery. Infected mice demonstrated profound and widespread brain pathology, motor coordination and sensory deficits. In contrast, cognitive function, anxiety levels, social behavior and the motivation to explore novel objects were normal. The observed changes in behavior did not represent "gross" brain damage or dysfunction and were not due to targeted destruction of specific areas of the brain. Such changes point out the subtle interaction of this parasite with its intermediate hosts and are consistent with ideas about increased predation being an outcome of infection.
AB - Toxoplasma gondii is a ubiquitous intracellular parasite which chronically infects 30-50% of the human population. While acquired infection is primarily asymptomatic several studies have suggested that such infections may contribute to neurological and psychiatric symptoms. Previous studies in rodents have demonstrated that T. gondii infection does not just kill its host, but alters the behavioral repertoire of an infected animal, making it more likely that predation with occur completing the parasite life cycle. The aim of the present study was to evaluate the behavioral changes in C57BL/6 mice chronically infected with the avirulent T. gondii (ME49, a Type II strain), in a comprehensive test battery. Infected mice demonstrated profound and widespread brain pathology, motor coordination and sensory deficits. In contrast, cognitive function, anxiety levels, social behavior and the motivation to explore novel objects were normal. The observed changes in behavior did not represent "gross" brain damage or dysfunction and were not due to targeted destruction of specific areas of the brain. Such changes point out the subtle interaction of this parasite with its intermediate hosts and are consistent with ideas about increased predation being an outcome of infection.
KW - Cognitive tests
KW - Latent infection
KW - Motor coordination
KW - Parasitology
KW - Social behavior
KW - Toxoplasma gondii
UR - http://www.scopus.com/inward/record.url?scp=77953289787&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953289787&partnerID=8YFLogxK
U2 - 10.1016/j.micinf.2010.03.009
DO - 10.1016/j.micinf.2010.03.009
M3 - Article
C2 - 20348009
AN - SCOPUS:77953289787
VL - 12
SP - 528
EP - 537
JO - Microbes and Infection
JF - Microbes and Infection
SN - 1286-4579
IS - 7
ER -