Type:Protein
SpeciesReactivity:H;M
B=Bovine;Ca=Cat;Ch=Chicken;D=Dog;EQ=Equine;GP=GuineaPig;H=Human;M=Mouse;P=Porcine;Pr=Primate;R=Rat;Rb=Rabbit;Y=Yeast;Xe=Xenopus;Ze=Zebrafish;;;;NA-NotApplicable;STP=Step-TactinProteins;All
BrainDerivedGrowthFactor(BDNF)promotesthesurvivalofneuronalpopulationsthatarealllocatedeitherinthecentralnervoussystemordirectlyconnectedtoit.Majorregulatorofsynaptictransmissionandplasticityatadultsynapsesinmanyregionsofthecns.theversatilityofBDNFisemphasizedbyitscontributiontoarangeofadaptiveneuronalresponsesincludinglong-termpotentiation(ltp),long-termdepression(ltd),certainformsofshort-termsynapticplasticity,aswellashomeostaticregulationofintrinsicneuronalexcitABIlity.
A–H,PhotomicrographsshowingBDNFexpressionintheL5–L6spinalcordsegmentofspinal-intactandSCIanimals.Scalebar,20μm.A,Thespecificityoftheantibodywastestedbyincubatingspinalcordsectionsintheabsenceoftheprimaryantibody.Nostainingwasobservedintheseconditions.B–D,Inthespinalcord,BDNFexpressionwasfoundinthedorsalhornsofthespinalcord,particularlyinthesuperficiallayersofthecord.Itsignificantlyincreasedinatime-dependentmannerafterSCI(C,D,H;*p<0.05vsspinalintact,***p<0.01vsspinalintact).E,IntrathecalsequestrationofBDNFwithTrkB-Ig2for1weekcausedamarkeddecreaseinBDNFexpressioninthedorsalhorncomparedwithnontreated1weekSCIrats(H;#p<0.05vsnontreatedSCIratsatthesametimepoint).F,G,BDNFintrathecaladmiNISTrationsignificantlyincreasedBDNFexpressioninthesuperficiallayersofthespinalcordinbothexperimentalgroups(H;&p<0.05vsnontreatedSCIratsatthesametimepoint).H,BargraphdepictingthemeanintensityofBDNFexpressionintheL5/L6spinalcordsegmentfromallexperimentalgroups.BDNFlevelswereupregulatedat1and4weeksafterSCIwhencomparedwithspinal-intactanimals.WhereasBDNFsequestrationwithTrkB-Ig2causedadecreaseinitsexpression,chronictreatmentwithrecombinantBDNFresultedinanincreaseofimmunoreactivity.TheJournalofNeuroscience,4February2015,35(5):2146-2160;doi:10.1523/JNEUROSCI.0373-14.2015.
Note:hBDNFisfullyBIOLOGicallyactivewhencomparedtoastandard.TheED50iscalculatedbythedose-dependentinductionofACHE(acetylcholineesterase)inratbasalforebrainseptalcultureandiswithinarangeof20-40ng/ml.
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