PMID- 22672085 OWN - NLM STAT- MEDLINE DCOM- 20130109 LR - 20131121 IS - 1366-5804 (Electronic) IS - 1354-750X (Linking) VI - 17 IP - 6 DP - 2012 Sep TI - Robust changes in expression of brain-derived neurotrophic factor (BDNF) mRNA and protein across the brain do not translate to detectable changes in BDNF levels in CSF or plasma. PG - 524-31 LID - 10.3109/1354750X.2012.694476 [doi] AB - Adult rats were treated acutely with peripheral kainic acid (KA), and changes in brain-derived neurotrophic factor (BDNF) mRNA and protein were tracked over time across multiple brain regions. Despite robust elevation in both mRNA and protein in multiple brain regions, plasma BDNF was unchanged and cerebrospinal fluid (CSF) BDNF levels remained undetectable. Primary neurons were then treated with KA. BDNF was similarly elevated within neurons, but was undetectable in neuronal media. Thus, while deficits in BDNF signaling have been implicated in a number of diseases, these data suggest that extracellular concentrations of BDNF may not be a facile biomarker for changes in neurons. FAU - Lanz, Thomas A AU - Lanz TA AD - Pfizer Global Research and Development, Groton, CT 06340, USA. thomas.a.lanz@pfizer.com FAU - Bove, Susan E AU - Bove SE FAU - Pilsmaker, Catherine D AU - Pilsmaker CD FAU - Mariga, Abigail AU - Mariga A FAU - Drummond, Elena M AU - Drummond EM FAU - Cadelina, Gregory W AU - Cadelina GW FAU - Adamowicz, Wendy O AU - Adamowicz WO FAU - Swetter, Brentt J AU - Swetter BJ FAU - Carmel, Sharon AU - Carmel S FAU - Dumin, Jo Ann AU - Dumin JA FAU - Kleiman, Robin J AU - Kleiman RJ LA - eng PT - Journal Article DEP - 20120607 PL - England TA - Biomarkers JT - Biomarkers : biochemical indicators of exposure, response, and susceptibility to chemicals JID - 9606000 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - EC 1.1.1.27 (L-Lactate Dehydrogenase) RN - SIV03811UC (Kainic Acid) SB - IM MH - Animals MH - Brain/metabolism/pathology MH - Brain-Derived Neurotrophic Factor/*blood/cerebrospinal fluid/*genetics/metabolism MH - Cells, Cultured MH - Choroid Plexus/pathology MH - *Gene Expression MH - Hippocampus/*metabolism/pathology MH - Humans MH - Kainic Acid MH - L-Lactate Dehydrogenase/metabolism MH - Male MH - Neurons/enzymology/metabolism MH - Primary Cell Culture MH - RNA, Messenger/genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Seizures/blood/cerebrospinal fluid/chemically induced EDAT- 2012/06/08 06:00 MHDA- 2013/01/10 06:00 CRDT- 2012/06/08 06:00 PHST- 2012/06/08 06:00 [entrez] PHST- 2012/06/08 06:00 [pubmed] PHST- 2013/01/10 06:00 [medline] AID - 10.3109/1354750X.2012.694476 [doi] PST - ppublish SO - Biomarkers. 2012 Sep;17(6):524-31. doi: 10.3109/1354750X.2012.694476. Epub 2012 Jun 7.