Short-term environmental enrichment exposure induces proliferation and maturation of doublecortin-positive cells in the prefrontal cortex
Previous studies have demonstrated that doublecortin-positive immature neurons exist pre- dominantly in the superficial layer of the cerebral cortex of adult mammals such as guinea pigs, and these neurons exhibit very weak properties of self-proliferation during adulthood under physiological conditi...
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Published in | Neural regeneration research Vol. 9; no. 3; pp. 318 - 328 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
India
Medknow Publications and Media Pvt. Ltd
01.02.2014
Medknow Publications & Media Pvt. Ltd Department of Anatomy and Neurobiology, Central South University School of Basic Medical Sciences, Changsha, Hunan Province, China%Grade 2006, Eight-year Medicine Doctor Program, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China%Grade 2011, Six-year Medicine Program of International Student, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China%Grade 2008, Eight-year Medicine Doctor Program, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China Medknow Publications & Media Pvt Ltd |
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Summary: | Previous studies have demonstrated that doublecortin-positive immature neurons exist pre- dominantly in the superficial layer of the cerebral cortex of adult mammals such as guinea pigs, and these neurons exhibit very weak properties of self-proliferation during adulthood under physiological conditions. To verify whether environmental enrichment has an impact on the proliferation and maturation of these immature neurons in the prefrontal cortex of adult guinea pigs, healthy adult guinea pigs were subjected to short-term environmental enrichment. Animals were allowed to play with various cognitive and physical stimulating objects over a period of 2 weeks, twice per day, for 60 minutes each. Immunofluorescence staining results indicated that the number of doublecortin-positive cells in layer II of the prefrontal cortex was significantly increased after short-term environmental enrichment exposure. In addition, these doublecortin-positive cells co-expressed 5-bromo-2-deoxyuridine (a marker of cell prolifera- tion), c-Fos (a marker of cell viability) and NeuN (a marker of mature neurons). Experimental findings showed that short-term environmental enrichment can induce proliferation, activation and maturation of doublecortin-positive cells in layer II of the prefrontal cortex of adult guinea pigs. |
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Bibliography: | Chunling Fan Mengqi Zhang Lei Shang Ngobe Akume Cynthia Zhi Li Zhenyu Yang Dan Chen Jufang Huang Kun Xiong 1 Department of Anatomy and Neurobiology, Central South University School of Basic Medical Sciences, Changsha, Hunan Province, China 2 Grade 2006, Eight-year Medicine Doctor Program, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China 3 Grade 2011, Six-year Medicine Program of International Student, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China 4 Grade 2008, Eight-year Medicine Doctor Program, Central South University Xiangya School of Medicine, Changsha, Hunan Province, China Previous studies have demonstrated that doublecortin-positive immature neurons exist pre- dominantly in the superficial layer of the cerebral cortex of adult mammals such as guinea pigs, and these neurons exhibit very weak properties of self-proliferation during adulthood under physiological conditions. To verify whether environmental enrichment has an impact on the proliferation and maturation of these immature neurons in the prefrontal cortex of adult guinea pigs, healthy adult guinea pigs were subjected to short-term environmental enrichment. Animals were allowed to play with various cognitive and physical stimulating objects over a period of 2 weeks, twice per day, for 60 minutes each. Immunofluorescence staining results indicated that the number of doublecortin-positive cells in layer II of the prefrontal cortex was significantly increased after short-term environmental enrichment exposure. In addition, these doublecortin-positive cells co-expressed 5-bromo-2-deoxyuridine (a marker of cell prolifera- tion), c-Fos (a marker of cell viability) and NeuN (a marker of mature neurons). Experimental findings showed that short-term environmental enrichment can induce proliferation, activation and maturation of doublecortin-positive cells in layer II of the prefrontal cortex of adult guinea pigs. nerve regeneration; neurogenesis; prefrontal cortex; neocortex; guinea pig; doublecortinprotein; cell proliferation; neurons; 5-bromodeoxyuridine; NSFC grant; neural regeneration 11-5422/R ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Author contributions: Xiong K designed the experiment. Fang CL, Shang L, Li Z and Yang ZY performed the experiment. Fang CL and Zhang MQ drafted the manuscript. Chen D analyzed the data. Xiong K and Huang JF revised the manuscript and participated in paper modification. Cynthia NA revised the manuscript for English writing. All authors participated in critical revision of the manuscript and approved the final manuscript. |
ISSN: | 1673-5374 1876-7958 |
DOI: | 10.4103/1673-5374.128231 |