Irradiation in adulthood as a new model of schizophrenia.
<h4>Background</h4>Epidemiological studies suggest that radiation exposure may be a potential risk factor for schizophrenia in adult humans. Here, we investigated whether adult irradiation in rats caused behavioral abnormalities relevant to schizophrenia.<h4>Methodology/principal f...
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2008
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oai:doaj.org-article:7b13f1131b5a4c5094f28358c1bc81432021-11-25T06:12:17ZIrradiation in adulthood as a new model of schizophrenia.1932-620310.1371/journal.pone.0002283https://doaj.org/article/7b13f1131b5a4c5094f28358c1bc81432008-05-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18509473/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Epidemiological studies suggest that radiation exposure may be a potential risk factor for schizophrenia in adult humans. Here, we investigated whether adult irradiation in rats caused behavioral abnormalities relevant to schizophrenia.<h4>Methodology/principal findings</h4>A total dose of 15-Gy irradiation in six fractionations during 3 weeks was exposed to the forebrain including the subventricular zone (SVZ) and subgranular zone (SGZ) with male rats in the prone position. Behavioral, immunohistochemical, and neurochemical studies were performed three months after fractionated ionizing irradiation. Three months after fractionated ionizing irradiation, the total numbers of BrdU-positive cells in both the SVZ and SGZ zones of irradiated rats were significantly lower than those of control (sham-irradiated) rats. Hyperactivity after administration of the dopaminergic agonist methamphetamine, but not the N-methyl-D-aspartate (NMDA) receptor antagonist dizocilpine, was significantly enhanced in the irradiated rats although spontaneous locomotion in the irradiated rats was significantly lower than that of controls. Behavioral abnormalities including auditory sensory gating deficits, social interaction deficits, and working memory deficits were observed in the irradiated rats.<h4>Conclusion/significance</h4>The present study suggests that irradiation in adulthood caused behavioral abnormalities relevant to schizophrenia, and that reduction of adult neurogenesis by irradiation may be associated with schizophrenia-like behaviors in rats.Yasuhide IwataKatsuaki SuzukiTomoyasu WakudaNorihito SekiIsmail ThanseemHideo MatsuzakiTakayoshi MamiyaTakatoshi UekiSumiko MikawaTakeshi SasakiShiro SudaShigeyuki YamamotoKenji J TsuchiyaGenichi SugiharaKazuhiko NakamuraKohji SatoNori TakeiKenji HashimotoNorio MoriPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 5, p e2283 (2008) |
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Medicine R Science Q Yasuhide Iwata Katsuaki Suzuki Tomoyasu Wakuda Norihito Seki Ismail Thanseem Hideo Matsuzaki Takayoshi Mamiya Takatoshi Ueki Sumiko Mikawa Takeshi Sasaki Shiro Suda Shigeyuki Yamamoto Kenji J Tsuchiya Genichi Sugihara Kazuhiko Nakamura Kohji Sato Nori Takei Kenji Hashimoto Norio Mori Irradiation in adulthood as a new model of schizophrenia. |
| description |
<h4>Background</h4>Epidemiological studies suggest that radiation exposure may be a potential risk factor for schizophrenia in adult humans. Here, we investigated whether adult irradiation in rats caused behavioral abnormalities relevant to schizophrenia.<h4>Methodology/principal findings</h4>A total dose of 15-Gy irradiation in six fractionations during 3 weeks was exposed to the forebrain including the subventricular zone (SVZ) and subgranular zone (SGZ) with male rats in the prone position. Behavioral, immunohistochemical, and neurochemical studies were performed three months after fractionated ionizing irradiation. Three months after fractionated ionizing irradiation, the total numbers of BrdU-positive cells in both the SVZ and SGZ zones of irradiated rats were significantly lower than those of control (sham-irradiated) rats. Hyperactivity after administration of the dopaminergic agonist methamphetamine, but not the N-methyl-D-aspartate (NMDA) receptor antagonist dizocilpine, was significantly enhanced in the irradiated rats although spontaneous locomotion in the irradiated rats was significantly lower than that of controls. Behavioral abnormalities including auditory sensory gating deficits, social interaction deficits, and working memory deficits were observed in the irradiated rats.<h4>Conclusion/significance</h4>The present study suggests that irradiation in adulthood caused behavioral abnormalities relevant to schizophrenia, and that reduction of adult neurogenesis by irradiation may be associated with schizophrenia-like behaviors in rats. |
| format |
article |
| author |
Yasuhide Iwata Katsuaki Suzuki Tomoyasu Wakuda Norihito Seki Ismail Thanseem Hideo Matsuzaki Takayoshi Mamiya Takatoshi Ueki Sumiko Mikawa Takeshi Sasaki Shiro Suda Shigeyuki Yamamoto Kenji J Tsuchiya Genichi Sugihara Kazuhiko Nakamura Kohji Sato Nori Takei Kenji Hashimoto Norio Mori |
| author_facet |
Yasuhide Iwata Katsuaki Suzuki Tomoyasu Wakuda Norihito Seki Ismail Thanseem Hideo Matsuzaki Takayoshi Mamiya Takatoshi Ueki Sumiko Mikawa Takeshi Sasaki Shiro Suda Shigeyuki Yamamoto Kenji J Tsuchiya Genichi Sugihara Kazuhiko Nakamura Kohji Sato Nori Takei Kenji Hashimoto Norio Mori |
| author_sort |
Yasuhide Iwata |
| title |
Irradiation in adulthood as a new model of schizophrenia. |
| title_short |
Irradiation in adulthood as a new model of schizophrenia. |
| title_full |
Irradiation in adulthood as a new model of schizophrenia. |
| title_fullStr |
Irradiation in adulthood as a new model of schizophrenia. |
| title_full_unstemmed |
Irradiation in adulthood as a new model of schizophrenia. |
| title_sort |
irradiation in adulthood as a new model of schizophrenia. |
| publisher |
Public Library of Science (PLoS) |
| publishDate |
2008 |
| url |
https://doaj.org/article/7b13f1131b5a4c5094f28358c1bc8143 |
| work_keys_str_mv |
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1718414050876981248 |