PMID- 17927990 OWN - NLM STAT- MEDLINE DCOM- 20081118 LR - 20211020 IS - 1095-6867 (Electronic) IS - 0018-506X (Print) IS - 0018-506X (Linking) VI - 54 IP - 1 DP - 2008 Jun TI - Effects of multiparity on recognition memory, monoaminergic neurotransmitters, and brain-derived neurotrophic factor (BDNF). PG - 7-17 AB - Recognition memory and anxiety were examined in nulliparous (NP: 0 litters) and multiparous (MP: 5-6 litters) middle-aged female rats (12 months old) to assess possible enduring effects of multiparity at least 3 months after the last litter was weaned. MP females performed significantly better than NP females on the non-spatial memory task, object recognition, and the spatial memory task, object placement. Anxiety as measured on the elevated plus maze did not differ between groups. Monoaminergic activity and levels were measured in prefrontal cortex, CA1 hippocampus, CA3 hippocampus, and olfactory bulb (OB). NP and MP females differed in monoamine concentrations in the OB only, with MP females having significantly greater concentrations of dopamine and metabolite DOPAC, norepinephrine and metabolite MHPG, and the serotonin metabolite 5-HIAA, as compared to NP females. These results indicate a long-term change in OB neurochemistry as a result of multiparity. Brain-derived neurotrophic factor (BDNF) was also measured in hippocampus (CA1, CA3, dentate gyrus) and septum. MP females had higher BDNF levels in both CA1 and septum; as these regions are implicated in memory performance, elevated BDNF may underlie the observed memory task differences. Thus, MP females (experiencing multiple bouts of pregnancy, birth, and pup rearing during the first year of life) displayed enhanced memory task performance but equal anxiety responses, as compared to NP females. These results are consistent with previous studies showing long-term changes in behavioral function in MP, as compared to NP, rats and suggest that alterations in monoamines and a neurotrophin, BDNF, may contribute to the observed behavioral changes. FAU - Macbeth, Abbe H AU - Macbeth AH AD - Department of Psychology, Hunter College, CUNY, New York, NY 10021, USA. macbetha@mail.nih.gov FAU - Scharfman, Helen E AU - Scharfman HE FAU - Maclusky, Neil J AU - Maclusky NJ FAU - Gautreaux, Claris AU - Gautreaux C FAU - Luine, Victoria N AU - Luine VN LA - eng GR - S06 GM060654/GM/NIGMS NIH HHS/United States GR - S06 GM060654-070015/GM/NIGMS NIH HHS/United States GR - R25 GM060665/GM/NIGMS NIH HHS/United States GR - G12 RR003037-22/RR/NCRR NIH HHS/United States GR - NS 37562/NS/NINDS NIH HHS/United States GR - S06 GM060654-08/GM/NIGMS NIH HHS/United States GR - RR-03037/RR/NCRR NIH HHS/United States GR - G12 RR003037/RR/NCRR NIH HHS/United States GR - S06-GM-60654/GM/NIGMS NIH HHS/United States GR - R56 NS037562/NS/NINDS NIH HHS/United States GR - R01 NS037562-08/NS/NINDS NIH HHS/United States GR - R01 NS037562/NS/NINDS NIH HHS/United States GR - R25 GM060665-08/GM/NIGMS NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20070831 PL - United States TA - Horm Behav JT - Hormones and behavior JID - 0217764 RN - 0 (Biogenic Monoamines) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Gonadal Steroid Hormones) RN - 0 (Neurotransmitter Transport Proteins) SB - IM MH - Animals MH - Behavior, Animal/physiology MH - Biogenic Monoamines/metabolism MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Female MH - Gonadal Steroid Hormones/blood MH - Hippocampus/metabolism MH - Maze Learning/physiology MH - Memory/*physiology MH - Neurotransmitter Transport Proteins/metabolism/*physiology MH - Parity/*physiology MH - Pattern Recognition, Physiological/*physiology MH - Pregnancy MH - Rats MH - Rats, Inbred F344 MH - Rats, Sprague-Dawley MH - Septum of Brain/metabolism PMC - PMC2441760 MID - NIHMS54372 EDAT- 2007/10/12 09:00 MHDA- 2008/11/19 09:00 PMCR- 2009/06/01 CRDT- 2007/10/12 09:00 PHST- 2007/04/16 00:00 [received] PHST- 2007/08/20 00:00 [revised] PHST- 2007/08/22 00:00 [accepted] PHST- 2007/10/12 09:00 [pubmed] PHST- 2008/11/19 09:00 [medline] PHST- 2007/10/12 09:00 [entrez] PHST- 2009/06/01 00:00 [pmc-release] AID - S0018-506X(07)00205-X [pii] AID - 10.1016/j.yhbeh.2007.08.011 [doi] PST - ppublish SO - Horm Behav. 2008 Jun;54(1):7-17. doi: 10.1016/j.yhbeh.2007.08.011. Epub 2007 Aug 31.