NT-4 attenuates neuroinflammation via TrkB/PI3K/FoxO1 pathway after germinal matrix hemorrhage in neonatal rats.
by Summer
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Neuroinflammation play an important role in the pathogenesis of germinal matrix hemorrhage (GMH). neurotrophin – 4 (NT- 4 ) is a member of the neurotrophin family and interact with tropomyosin receptor kinase B (TrkB ). NT- 4 has been shown to provide the following neurological effects of cerebral ischemia. We aimed to determine the function of the nerves of NT- 4 -TrkB signaling, as well as the signaling cascade downstream of phosphatidylinositol-3-kinase (PI3K) / protein kinase B (Akt) / forkhead box protein O1 (FoxO1), the following GMH in neonatal rats.
GMH induced by intraparenchymal injection of bacterial collagenase (0.3 U) in P7 rat pup. A total of 163 pups were used in this study. Recombinant Human NT- 4 is given intranasally at 1 hour after injection of collagenase. Selective TrkB ANA-12 antagonist, selective PI3K inhibitor LY29 4 002, and FoxO1 activate CRISPR given intracerebroventricularly at 2 4 hours before NT- 4 treatment to investigate the underlying mechanisms. Short-term and long-term neurobehavioral assessment, immunofluorescence staining, Nissl’s staining and Western blot performed.
The expression of phosphorylated TrkB increased after GMH, reaching peak levels on day 3 after bleeding. TrkB receptors were observed in neurons, microglia, and astrocytes. Administration rh-NT- 4 induced phosphorylation of TrkB, the expression of PI3K and Akt phosphorylation. Meanwhile, the decrease in FoxO1 and IL-6 levels. Selective inhibition of TrkB / PI3K / Akt signaling in microglia increase expression levels FoxO1 and pro-inflammatory cytokines. FoxO1 activate CRISPR increased expression of IL-6, suggesting that perhaps FoxO1 potential inducer of pro-inflammatory factors.
These results demonstrate that the PI3K / Akt / FoxO1 downstream signaling pathways may TrkB activation. Rat pups treated with rh-NT- 4 performed better than vehicle-treated animals both short-term and long-term behavioral tests. These data indicate that rh-NT – 4 reducing the expression of pro-inflammatory cytokines, improve neurological function, attenuated neuroinflammation, and thus reduced post-hemorrhagic hydrocephalus after GMH by TrkB / PI3K / Akt / FoxO1 track. These results indicate that rh-NT- 4 could be a promising therapeutic strategy for repairing nerve inflammation and hydrocephalus after GMH or other similar brain injuries.
NT-4 attenuates neuroinflammation via TrkB/PI3K/FoxO1 pathway after germinal matrix hemorrhage in neonatal rats.
Brain-derived neurotrophic factors mediate macrophage migration inhibitory factor to protect neurons against oxygen-glucose deficiency.
Macrophage migration inhibitory factor (MIF) is a chemokine that plays an important role in immune system function. Previous research suggests that MIF protect neurons under ischemic conditions. However, several studies reported on the role of MIF in nerve recovery after ischemic stroke. The purpose of this study is to identify the molecular mechanisms of neuroprotection mediated by MIF.
Description: Neurotrophin-3 Mouse Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 119 amino acids and having a molecular mass of 13.6kDa. ;The NT-3 is purified by proprietary chromatographic techniques.
Description: Neurotrophin-3 (NT-3) is a member of the NGF family of neurotrophic factors and is structurally related to beta -NGF, BDNF and NT-4. The NT3 cDNA encodes a 257 amino acid residue precursor protein with a signal peptide and a proprotein that are cleaved to yield the 119 amino acid residue mature NT3.The amino acid sequences of mature human, murine and rat NT-3 are identical. NT-3 selectively promotes the differentiation and survival of specific neuronal subpopulations in both the central as well as the peripheral nervous systems.
Description: Neurotrophin-1 Human Recombinant (28-225) produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 199 amino acids and having a molecular mass of 22kDa.;The NNT-1 is purified by proprietary chromatographic techniques.
Description: Quantitativesandwich ELISA kit for measuring Human Neurotrophin 4, NT-4 in samples from serum, plasma, cell culture supernates. A new trial version of the kit, which allows you to test the kit in your application at a reasonable price.
Description: Quantitativesandwich ELISA kit for measuring Human Neurotrophin 4, NT-4 in samples from serum, plasma, cell culture supernates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits.
Description: Quantitativesandwich ELISA kit for measuring Rat Neurotrophin 4, NT-4 in samples from serum, plasma, tissue homogenates. A new trial version of the kit, which allows you to test the kit in your application at a reasonable price.
Description: Quantitativesandwich ELISA kit for measuring Rat Neurotrophin 4, NT-4 in samples from serum, plasma, tissue homogenates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits.
Description: Recombinant NT-4 is a disulfide-linked homodimer protein consisting of two 131 amino acid residues, and migrates as an approximately 29 kDa protein under non-reducing and as 14 kDa under reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human Neurotrophin-4 mature chain was expressed in E. coli.
Description: Recombinant NT-4 is a disulfide-linked homodimer protein consisting of two 131 amino acid residues, and migrates as an approximately 29 kDa protein under non-reducing and as 14 kDa under reducing conditions in SDS-PAGE. Optimized DNA sequence encoding Human Neurotrophin-4 mature chain was expressed in E. coli.
Description: Quantitativesandwich ELISA kit for measuring Mouse Neurotrophin 4, NT-4 in samples from serum, plasma, tissue homogenates. A new trial version of the kit, which allows you to test the kit in your application at a reasonable price.
Description: Quantitativesandwich ELISA kit for measuring Mouse Neurotrophin 4, NT-4 in samples from serum, plasma, tissue homogenates. Now available in a cost efficient pack of 5 plates of 96 wells each, conveniently packed along with the other reagents in 5 separate kits.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: A competitive ELISA for quantitative measurement of Human Neurotrophin 4 in samples from blood, plasma, serum, cell culture supernatant and other biological fluids. This is a high quality ELISA kit developped for optimal performance with samples from the particular species.
Description: Enzyme-linked immunosorbent assay kit for quantification of Human Neurotrophin-4 in samples from serum, plasma, tissue homogenates and other biological fluids.
Description: Additional name(s) for this target protein: NT5 antibody, NTF4, neurotrophic factor 4, neurotrophic factor 5; NTF5
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Human cell neuroblastoma incubated in a modified media Eagle Dulbecco under lack of oxygen-glucose (OGD) for 4 hours and then returned to the aerobic environment normal to reperfusion (OGD / R). 30 ng / mL MIF recombinant (30 ng / mL) or ISO-1 (MIF antagonist; 50 M) was administered to the Human neuroblastoma cells. Then the cell culture is assigned to one of four groups: control, OGD / R, OGD / R by MIF, OGD / R with ISO-1.
