PMID- 18093285 OWN - NLM STAT- MEDLINE DCOM- 20080410 LR - 20211020 IS - 1471-2202 (Electronic) IS - 1471-2202 (Linking) VI - 8 DP - 2007 Dec 19 TI - Prenatal stress and subsequent exposure to chronic mild stress influence dendritic spine density and morphology in the rat medial prefrontal cortex. PG - 107 AB - BACKGROUND: Both prenatal stress (PS) and postnatal chronic mild stress (CMS) are associated with behavioral and mood disturbances in humans and rodents. The aim of this study was to reveal putative PS- and/or CMS-related changes in basal spine morphology and density of pyramidal neurons in the rat medial prefrontal cortex (mPFC). RESULTS: We show that rats exposed to PS and/or CMS display changes in the morphology and number of basal spines on pyramidal neurons in the mPFC. CMS had a negative effect on spine densities, particularly on spines of the mushroom type, which are considered to form stronger and more stable synapses than other spine types. PS alone did not affect spine densities, but had a negative effect on the ratio of mushroom spines. In addition, PS seemed to make rats less responsive to some of the negative effects of CMS, which supports the notion that PS represents a predictive adaptive response. CONCLUSION: The observed changes may represent a morphological basis of PS- and CMS-related disturbances, and future studies in the field should not only consider total spine densities, but also separate between different spine types. FAU - Michelsen, Kimmo A AU - Michelsen KA AD - Department of Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands. k.michelsen@np.unimaas.nl FAU - van den Hove, Daniel L A AU - van den Hove DL FAU - Schmitz, Christoph AU - Schmitz C FAU - Segers, Olivier AU - Segers O FAU - Prickaerts, Jos AU - Prickaerts J FAU - Steinbusch, Harry W M AU - Steinbusch HW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071219 PL - England TA - BMC Neurosci JT - BMC neuroscience JID - 100966986 SB - IM MH - Animals MH - Animals, Newborn MH - Cell Shape/physiology MH - Chronic Disease MH - Dendritic Spines/*pathology MH - Female MH - Image Cytometry MH - Male MH - Microscopy, Confocal MH - Microscopy, Electron, Transmission MH - Mood Disorders/etiology/*pathology/physiopathology MH - Prefrontal Cortex/abnormalities/*pathology/physiopathology MH - Pregnancy MH - Prenatal Exposure Delayed Effects/*pathology/physiopathology MH - Rats MH - Rats, Sprague-Dawley MH - Stress, Physiological/complications/*pathology/physiopathology MH - Synapses/pathology MH - Synaptic Transmission/physiology PMC - PMC2266759 EDAT- 2007/12/21 09:00 MHDA- 2008/04/11 09:00 PMCR- 2007/12/19 CRDT- 2007/12/21 09:00 PHST- 2007/03/14 00:00 [received] PHST- 2007/12/19 00:00 [accepted] PHST- 2007/12/21 09:00 [pubmed] PHST- 2008/04/11 09:00 [medline] PHST- 2007/12/21 09:00 [entrez] PHST- 2007/12/19 00:00 [pmc-release] AID - 1471-2202-8-107 [pii] AID - 10.1186/1471-2202-8-107 [doi] PST - epublish SO - BMC Neurosci. 2007 Dec 19;8:107. doi: 10.1186/1471-2202-8-107.