PMID- 18402624 OWN - NLM STAT- MEDLINE DCOM- 20080807 LR - 20161124 IS - 1399-5618 (Electronic) IS - 1398-5647 (Linking) VI - 10 IP - 3 DP - 2008 May TI - Neuroprotective effect of chronic lithium treatment against hypoxia in specific brain regions with upregulation of cAMP response element binding protein and brain-derived neurotrophic factor but not nerve growth factor: comparison with acute lithium treatment. PG - 360-8 LID - 10.1111/j.1399-5618.2007.00521.x [doi] AB - OBJECTIVES: We evaluated the neuroprotective effect of chronically or acutely administered lithium against hypoxia in several brain regions. Furthermore, we investigated the contribution of brain-derived neurotrophic factor (BDNF), nerve growth factor (NGF), and cAMP response element binding protein (CREB) to the neuroprotective effect of lithium. METHODS: Brain slices were prepared from rats that had been treated chronically or acutely with lithium. The cerebral glucose metabolic rate (CMRglc) before and after hypoxia loading to brain slices was measured using the dynamic positron autoradiography technique with [(18)F]2-fluoro-2-deoxy-D-glucose. The changes of expression of proteins were investigated using Western blot analysis. RESULTS: Before hypoxia loading, the CMRglc did not differ between the lithium-treated and untreated groups. After hypoxia loading, the CMRglc of the untreated group was significantly lower than that before hypoxia loading. However, the CMRglc of the chronic lithium treatment group recovered in the frontal cortex, caudate putamen, hippocampus and cerebellum, but not in the thalamus. In contrast, the CMRglc of the acute lithium treatment group did not recover in any analyzed brain regions. After chronic lithium treatment, the levels of expression of BDNF and phospho-CREB were higher than those of untreated rats in the frontal cortex, but not in the thalamus. However, the expression of NGF did not change in the frontal cortex and thalamus. CONCLUSIONS: These results demonstrated that lithium was neuroprotective against hypoxia only after chronic treatment and only in specific brain regions, and that CREB and BDNF might contribute to this effect. FAU - Omata, N AU - Omata N AD - Department of Neuropsychiatry, University of Fukui, Fukui, Japan. FAU - Murata, T AU - Murata T FAU - Takamatsu, S AU - Takamatsu S FAU - Maruoka, N AU - Maruoka N FAU - Mitsuya, H AU - Mitsuya H FAU - Yonekura, Y AU - Yonekura Y FAU - Fujibayashi, Y AU - Fujibayashi Y FAU - Wada, Y AU - Wada Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Bipolar Disord JT - Bipolar disorders JID - 100883596 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cyclic AMP Response Element-Binding Protein) RN - 0 (Insulin) RN - 0 (Lithium Compounds) RN - 0 (Neuroprotective Agents) RN - 0Z5B2CJX4D (Fluorodeoxyglucose F18) SB - IM MH - Animals MH - Brain/diagnostic imaging/*drug effects/pathology MH - Brain Mapping MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cyclic AMP Response Element-Binding Protein/*metabolism MH - Drug Administration Schedule MH - Fluorodeoxyglucose F18/metabolism MH - *Hypoxia/drug therapy/pathology/physiopathology MH - In Vitro Techniques MH - Insulin/pharmacology MH - Lithium Compounds/pharmacology/*therapeutic use MH - Male MH - Neuroprotective Agents/pharmacology/*therapeutic use MH - Positron-Emission Tomography MH - Rats MH - Rats, Wistar MH - Time Factors MH - Up-Regulation/*drug effects EDAT- 2008/04/12 09:00 MHDA- 2008/08/08 09:00 CRDT- 2008/04/12 09:00 PHST- 2008/04/12 09:00 [pubmed] PHST- 2008/08/08 09:00 [medline] PHST- 2008/04/12 09:00 [entrez] AID - BDI521 [pii] AID - 10.1111/j.1399-5618.2007.00521.x [doi] PST - ppublish SO - Bipolar Disord. 2008 May;10(3):360-8. doi: 10.1111/j.1399-5618.2007.00521.x.