PMID- 18342945 OWN - NLM STAT- MEDLINE DCOM- 20080825 LR - 20131121 IS - 0161-813X (Print) IS - 0161-813X (Linking) VI - 29 IP - 3 DP - 2008 May TI - Gender differences in susceptibility to kainic acid-induced neurodegeneration in aged C57BL/6 mice. PG - 406-12 LID - 10.1016/j.neuro.2008.01.006 [doi] AB - Some epidemiological studies concerning gender differences in Alzheimer's disease (AD) support the higher prevalence and incidence of AD in women, while most studies using animal models of aging have included only male subjects. It is still uncommon for aged males and females to be compared in the same study. In the present study, we investigated how age and gender influence the excitotoxic neurodegeneration by treating C57BL/6 mice (aged females and males as well as adult females and males) with kainic acid (KA) intranasally. Clinical signs, behavioural changes, pathological changes and astrocyte proliferation were tested; and the levels of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) were measured after KA treatment. The results showed that aged female mice were more sensitive to KA-induced excitotoxicity as demonstrated by severer seizure activity, increased locomotion and rearing in open-field test, prominent hippocampal neuronal damage, enhanced astrocyte proliferation compared with aged males, adult females and adult male mice. In addition, higher BDNF level in hippocampus of aged female mice was observed. These results denote the disparity of aging and gender in KA-induced hippocampal neurodegeneration and aged female mice are more sensitive to the excitotoxicity. FAU - Zhang, Xing-Mei AU - Zhang XM AD - Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden. FAU - Zhu, Shun-Wei AU - Zhu SW FAU - Duan, Rui-Sheng AU - Duan RS FAU - Mohammed, Abdul H AU - Mohammed AH FAU - Winblad, Bengt AU - Winblad B FAU - Zhu, Jie AU - Zhu J LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080208 PL - Netherlands TA - Neurotoxicology JT - Neurotoxicology JID - 7905589 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Excitatory Amino Acid Agonists) RN - 0 (Glial Fibrillary Acidic Protein) RN - 0 (Nerve Growth Factors) RN - SIV03811UC (Kainic Acid) SB - IM MH - Aging/*physiology MH - Animals MH - Astrocytes/drug effects MH - Behavior, Animal/drug effects MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Proliferation/drug effects MH - Cerebral Cortex/pathology MH - Enzyme-Linked Immunosorbent Assay MH - Excitatory Amino Acid Agonists/*toxicity MH - Female MH - Glial Fibrillary Acidic Protein/metabolism MH - Hippocampus/pathology MH - Immunohistochemistry MH - Kainic Acid/*toxicity MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Motor Activity/drug effects MH - Nerve Degeneration/*chemically induced/pathology MH - Nerve Growth Factors/metabolism MH - Seizures/chemically induced/pathology MH - Sex Characteristics EDAT- 2008/03/18 09:00 MHDA- 2008/08/30 09:00 CRDT- 2008/03/18 09:00 PHST- 2007/10/30 00:00 [received] PHST- 2008/01/10 00:00 [revised] PHST- 2008/01/29 00:00 [accepted] PHST- 2008/03/18 09:00 [pubmed] PHST- 2008/08/30 09:00 [medline] PHST- 2008/03/18 09:00 [entrez] AID - S0161-813X(08)00011-9 [pii] AID - 10.1016/j.neuro.2008.01.006 [doi] PST - ppublish SO - Neurotoxicology. 2008 May;29(3):406-12. doi: 10.1016/j.neuro.2008.01.006. Epub 2008 Feb 8.