Journal: Frontiers in Cell and Developmental Biology
Article Title: Requirements of Postnatal proBDNF in the Hippocampus for Spatial Memory Consolidation and Neural Function
doi: 10.3389/fcell.2021.678182
Figure Lengend Snippet: Blocking proBDNF reduces spine number and learning-related GluN2B expression. The samples from rats that performed spatial training in the MWM task were collected immediately following the training phase and selected for detecting spine density and the expression of glutamatergic receptor subunits. (A) Spine alteration in naive, untrained-antiproBDNF, trained control, and trained-antiproBDNF rats (top). Quantification of spine density (middle) and the proportion of spine (bottom). Scale bars, 5 μm. n = 6 per group. Sample images were projected at minimal intensity and inverted, background was then subtracted, followed by brightness/contrast adjustment. The expression and phosphorylation of GluA1 (B) and the expression of GluG2/3 and the phosphorylation of GluA2 (C) of AMPAR subunits. n = 10 per group. The expression and phosphorylation of GluN2A (D) and GluN2B (E) of NMDAR subunits. (* p
Article Snippet: A total of 418 male offspring from an average of 84 litters were randomly assigned to one of six groups: ( ) anti-proBDNF (second week), ( ) anti-proBDNF (fourth week), and ( ) anti-proBDNF (eighth week) groups received bilateral infusion of rabbit polyclonal anti-proBDNF antibody ( ; ) in the CA1 region of the HPC throughout the entire second postnatal week (PD2w, from PD8 to PD14), fourth postnatal week (PD4w, from PD22 to PD28), and eighth postnatal week (PD8w, from PD50 to PD56), respectively; ( ) control group was treated with the same volume of the vehicle (artificial cerebrospinal fluid, ACSF) throughout the whole PD2w (Con@2w), PD4w (Con@4w), and PD8w (Con@8w); ( ) Anti+TBOA group, which received infusion of anti-proBDNF antibody during the postnatal weeks, was bilaterally infused with DL-threo-β-benzyloxyaspartate (DL-TBOA) 0.5 or 2.5 h before spatial training [Anti+TBOA0.5(a) or Anti+TBOA2.5(a)], immediately following behavioral training [Anti+TBOA(b)] or 0.5 h before probe test [Anti+TBOA(c)]; and ( ) control group, which received infusion of ACSF during the postnatal weeks, was bilaterally infused with DL-TBOA 0.5 h before spatial training [TBOA(a)], immediately following behavioral training [TBOA(b)] or 0.5 h before probe test [TBOA(c)]; ( ) naive group was reared as the control group without the treatment.
Techniques: Blocking Assay, Expressing