Human mBDNF Rapid ELISA Assay

BDNF belongs to the neurotrophin family and regulates the survival and differentiation of neurons during development. The alterations in BDNF expression induced by various kinds of brain insult including stress, ischemia, seizure activity and hypoglycemia, may contribute to some pathologies such as depression, epilepsy, Alzheimer's, and Parkinson's disease. FUNCTION: Promotes the survival of neuronal populations that are all located either in the central nervous system or directly connected to it. Major regulator of synaptic transmission and plasticity at adult synapses in many regions of the CNS. The versatility of BDNF is emphasized by its contribution to a range of adaptive neuronal responses including long-term potentiation (LTP), long-term depression (LTD), certain forms of short-term synaptic plasticity, as well as homeostatic regulation of intrinsic neuronal excitability. SUBUNIT: Monomers and homodimers. Binds to NTRK2/TRKB. SUBCELLULAR LOCATION: Secreted protein. Post Translation Modification (PTM) : The propeptide is N-glycosylated and glycosulfated. PTM: Converted into mature BDNF by plasmin (PLG) (By similarity) . DISEASE: Defects in BDNF are a cause of congenital central hypoventilation syndrome (CCHS) ; also known as congenital failure of autonomic control or Ondine curse. CCHS is a rare disorder characterized by abnormal control of respiration in the absence of neuromuscular or lung disease, or an identifiable brain stem lesion. A deficiency in autonomic control of respiration results in inadequate or negligible ventilatory and arousal responses to hypercapnia and hypoxemia. CCHS is frequently complicated with neurocristopathies such as Hirschsprung disease that occurs in about 16% of CCHS cases. SIMILARITY: Belongs to the NGF-beta family.

The Biosensis Mature BDNF Rapid enzyme-linked immunosorbent assay (ELISA) Kit is a sandwich ELISA that allows the quantification of mature BDNF in less than 3 hours in cell culture supernatants, serum, plasma (citrate and EDTA), pig serum, cell lysates, brain extracts, human milk and Sheep CSF. This Mature BDNF ELISA kit employs a recombinant human mature BDNF standard approved by the World Health Organization. The amino acid sequence of mature BDNF is identical for human, mouse, rat and a number of other species. This kit therefore is suitable to measure mature BDNF in all these species and uses the same antibodies and antigen.

The Biosensis Mature BDNF Rapid enzyme-linked immunosorbent assay (ELISA) Kit is a sandwich ELISA that allows the quantification of mature BDNF in less than 3 hours in cell culture supernatants, serum, plasma (citrate and EDTA), pig serum, cell lysates, brain extracts, human milk and Sheep CSF only if used as directed, with a simplified protocol and no loss of sensitivity or specificity. Please refer to the kit protocol for specific use instructions for each substrate application, in particular blood samples, human milk and CSF. Note that accurate quantification of BDNF in human milk requires a secretory IgA (sIgA) blocker which can be purchased separately (BL-001-1250). For measurement of mature BDNF in CSF samples, please contact us. <br /><br />This ELISA kit has been tested in independent research laboratories and found to achieve highest reproducibility with intra- and inter-assay CVs as low as 1% and 5%, respectively (Polacchini et al., 2015).<br /><br />This ELISA kit consists of a pre-coated mouse monoclonal anti-mature BDNF capture antibody, a biotinylated anti-mature BDNF detection antibody and horseradish peroxidase (HRP)-conjugated streptavidin. The addition of a substrate (3,3',5,5'-tetramethylbenzidine, TMB) yields a coloured reaction product which is directly proportional to the concentration of mature BDNF present in samples and protein standards. A BDNF positive control (QC sample) is provided to assure consistent assay performance.<br /><br />This Mature BDNF ELISA kit employs a recombinant human mature BDNF standard approved by the World Health Organization (WHO, <a href="http://www.nibsc.org" target="_blank">www.nibsc.org</a>). The amino acid sequence of mature BDNF is identical for human, mouse, rat and a number of other species. This kit therefore is suitable to measure mature BDNF in all these species and uses the same antibodies and antigen. <br /><br />Extensive validation has demonstrated that the Mature BDNF Rapid ELISA shows only minimal cross-reactivity with proBDNF. Please refer to our Technical Note #5 for further details on ELISA assay validation for BDNF isoform detection and quanification.<br /><br />This ELISA kit has not been tested for other applications. It has been configured for research use only and is not to be used for diagnostic or clinical procedures. For in-vitro diagnostic (IVD) applications in the European Economic Area (EEA), we refer to the CE Marked BDNF ELISA kit BEK-2211-CE.<br />

Human Epidermal Growth Factor receptor. No cross-reactivity is observed for nerve growth factor (NGF), neurotrophin-3 (NT-3), NT-4/5, glial cell line-derived neurotrophic factor (GDNF) and vascular endothelial growth factor (VEGF165) tested at 25 ng/mL in assay buffer. The reactivity of full-length proBDNF (0.125 ng/mL - 5 ng/mL) was determined in six independent assays using proBDNF proteins from four different sources (mammalian and bacterial, wild-type and mutated) . The average cross-reactivity of proBDNF was found to be 5.3% +/- 0.5% in weight (w/v) concentration, or 12.1% +/- 1.2% in molar concentration (mean +/- SEM) . Additional proBDNF cross-reactivity experiments were conducted as summarized in our Technical Note #5.