PMID- 24577046 OWN - NLM STAT- MEDLINE DCOM- 20141211 LR - 20140422 IS - 1423-0224 (Electronic) IS - 0302-282X (Linking) VI - 69 IP - 2 DP - 2014 TI - Preanalysis storage conditions influence the measurement of brain-derived neurotrophic factor levels in peripheral blood. PG - 83-8 LID - 10.1159/000358061 [doi] AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) is a neurotrophin that plays a pivotal role in regulating neuronal function throughout life, and this factor is regarded as a potential biomarker of mental disorders. However, previous studies have suggested that plasma BDNF levels are more variable than serum BDNF levels. METHODS: We determined the influence of time and temperature on the measurement of peripheral blood BDNF levels. Blood samples were aliquoted into four types of tubes, including tubes containing heparin, ethylenediaminetetraacetic acid (EDTA), and citrate for plasma, and anticoagulant-free tubes for serum. The samples were stored at 4 or 25 degrees C for 0, 1, 2, 4, 6, 24 or 48 h, and the plasma and serum BDNF levels were measured using enzyme-linked immunosorbent assay. RESULTS: There were interindividual and interanticoagulant compound variability in the plasma BDNF levels. The measured plasma BDNF levels increased over time, whereas the serum BDNF levels remained unchanged. Furthermore, the BDNF levels detected in plasma stored in heparin tubes at 4 degrees C and those for samples stored in EDTA tubes at 25 degrees C were much higher than those of the other samples. CONCLUSION: This study indicates that measurements of plasma BDNF levels are dependent not only on the anticoagulant compounds but also on the storage time and temperature conditions used after blood sampling. FAU - Tsuchimine, Shoko AU - Tsuchimine S AD - Department of Neuropsychiatry, Graduate School of Medicine, Hirosaki University, Hirosaki, Japan. FAU - Sugawara, Norio AU - Sugawara N FAU - Ishioka, Masamichi AU - Ishioka M FAU - Yasui-Furukori, Norio AU - Yasui-Furukori N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140227 PL - Switzerland TA - Neuropsychobiology JT - Neuropsychobiology JID - 7512895 RN - 0 (Anticoagulants) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 2968PHW8QP (Citric Acid) RN - 9005-49-6 (Heparin) RN - 9G34HU7RV0 (Edetic Acid) SB - IM MH - Adult MH - Anticoagulants/pharmacology MH - Blood Specimen Collection/instrumentation/*methods MH - Brain-Derived Neurotrophic Factor/*blood MH - Citric Acid/pharmacology MH - Edetic Acid/pharmacology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Heparin/pharmacology MH - Humans MH - Male MH - Middle Aged MH - Plasma/chemistry/drug effects MH - Serum/chemistry/drug effects MH - Temperature MH - Time MH - Young Adult EDAT- 2014/03/01 06:00 MHDA- 2014/12/17 06:00 CRDT- 2014/03/01 06:00 PHST- 2012/11/15 00:00 [received] PHST- 2013/12/30 00:00 [accepted] PHST- 2014/03/01 06:00 [entrez] PHST- 2014/03/01 06:00 [pubmed] PHST- 2014/12/17 06:00 [medline] AID - 000358061 [pii] AID - 10.1159/000358061 [doi] PST - ppublish SO - Neuropsychobiology. 2014;69(2):83-8. doi: 10.1159/000358061. Epub 2014 Feb 27.