Stability of BDNF in Human Samples Stored Up to 6 Months and Correlations of Serum and EDTA-Plasma Concentrations.

Abstract:

Brain-derived neurotrophic factor (BDNF), an important neural growth factor, has gained growing interest in neuroscience, but many influencing physiological and analytical aspects still remain unclear. In this study we assessed the impact of storage time at room temperature, repeated freeze/thaw cycles, and storage at -80 degrees C up to 6 months on serum and ethylenediaminetetraacetic acid (EDTA)-plasma BDNF. Furthermore, we assessed correlations of serum and plasma BDNF concentrations in two independent sets of samples. Coefficients of variations (CVs) for serum BDNF concentrations were significantly lower than CVs of plasma concentrations (n = 245, p = 0.006). Mean serum and plasma concentrations at all analyzed time points remained within the acceptable change limit of the inter-assay precision as declared by the manufacturer. Serum and plasma BDNF concentrations correlated positively in both sets of samples and at all analyzed time points of the stability assessment (r = 0.455 to rs = 0.596; p < 0.004). In summary, when considering the acceptable change limit, BDNF was stable in serum and in EDTA-plasma up to 6 months. Due to a higher reliability, we suggest favoring serum over EDTA-plasma for future experiments assessing peripheral BDNF concentrations.

LHA-ID: 7Q6RC959NC-7

PubMed ID: 28587193

Projects: LIFE Adult

Publication type: Journal

Journal: Int J Mol Sci

Human Diseases: No Human Disease specified

Citation: Int J Mol Sci. 2017 Jun 3;18(6). pii: ijms18061189. doi: 10.3390/ijms18061189.

Date Published: 3rd Jun 2017

Registered Mode: by PubMed ID

Authors: M. Polyakova, H. Schlogl, J. Sacher, M. Schmidt-Kassow, J. Kaiser, M. Stumvoll, J. Kratzsch, M. L. Schroeter

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Created: 13th May 2019 at 10:25

Last updated: 13th Jul 2020 at 07:44

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