Intra-Amniotic LPS Induced Region-Specific Changes in Presynaptic Bouton Densities in the Ovine Fetal Brain
Joint Authors
Gavilanes, Antonio W. D.
Strackx, Eveline
Jellema, Reint K.
Rieke, Rebecca
Gussenhoven, Ruth
Vles, Johan S. H.
Kramer, Boris W.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-08-31
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Rationale.
Chorioamnionitis has been associated with increased risk for fetal brain damage.
Although, it is now accepted that synaptic dysfunction might be responsible for functional deficits, synaptic densities/numbers after a fetal inflammatory challenge have not been studied in different regions yet.
Therefore, we tested in this study the hypothesis that LPS-induced chorioamnionitis caused profound changes in synaptic densities in different regions of the fetal sheep brain.
Material and Methods.
Chorioamnionitis was induced by a 10 mg intra-amniotic LPS injection at two different exposure intervals.
The fetal brain was studied at 125 days of gestation (term = 150 days) either 2 (LPS2D group) or 14 days (LPS14D group) after LPS or saline injection (control group).
Synaptophysin immunohistochemistry was used to quantify the presynaptic density in layers 2-3 and 5-6 of the motor cortex, somatosensory cortex, entorhinal cortex, and piriforme cortex, in the nucleus caudatus and putamen and in CA1/2, CA3, and dentate gyrus of the hippocampus.
Results.
There was a significant reduction in presynaptic bouton densities in layers 2-3 and 5-6 of the motor cortex and in layers 2-3 of the entorhinal and the somatosensory cortex, in the nucleus caudate and putamen and the CA1/2 and CA3 of the hippocampus in the LPS2D compared to control animals.
Only in the motor cortex and putamen, the presynaptic density was significantly decreased in the LPS14 D compared to the control group.
No changes were found in the dentate gyrus of the hippocampus and the piriforme cortex.
Conclusion.
We demonstrated that LPS-induced chorioamnionitis caused a decreased density in presynaptic boutons in different areas in the fetal brain.
These synaptic changes seemed to be region-specific, with some regions being more affected than others, and seemed to be transient in some regions.
American Psychological Association (APA)
Strackx, Eveline& Jellema, Reint K.& Rieke, Rebecca& Gussenhoven, Ruth& Vles, Johan S. H.& Kramer, Boris W.…[et al.]. 2015. Intra-Amniotic LPS Induced Region-Specific Changes in Presynaptic Bouton Densities in the Ovine Fetal Brain. BioMed Research International،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1054846
Modern Language Association (MLA)
Strackx, Eveline…[et al.]. Intra-Amniotic LPS Induced Region-Specific Changes in Presynaptic Bouton Densities in the Ovine Fetal Brain. BioMed Research International No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1054846
American Medical Association (AMA)
Strackx, Eveline& Jellema, Reint K.& Rieke, Rebecca& Gussenhoven, Ruth& Vles, Johan S. H.& Kramer, Boris W.…[et al.]. Intra-Amniotic LPS Induced Region-Specific Changes in Presynaptic Bouton Densities in the Ovine Fetal Brain. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1054846
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1054846