Journal: Heliyon
Article Title: Melatonin attenuates spatial learning and memory dysfunction in developing rats by suppressing isoflurane-induced endoplasmic reticulum stress via the SIRT1/Mfn2/PERK signaling pathway
doi: 10.1016/j.heliyon.2022.e10326
Figure Lengend Snippet: Melatonin mitigated isoflurane-induced hippocampal neuro apoptosis in neonatal rats. (A) Western blot bands of apoptosis signaling in the hippocampus. (B) The treatment of melatonin significantly reduced isoflurane induced increase of pro-apoptosis factor Bax expression in hippocampus of neonatal rats ( F (3, 20) = 71.360, P < 0.001). (C) The treatment of melatonin significantly reduced isoflurane induced decrease of anti-apoptosis factor Bcl-2 expression in hippocampus of neonatal rats ( F (3, 20) = 9.573, P < 0.001). (D) The treatment of melatonin significantly reduced isoflurane induced increase of pro-apoptosis factor cleaved-caspase 3 expression in hippocampus of neonatal rats ( F (3, 20) = 19.910, P < 0.001). (E) The treatment of melatonin significantly increase isoflurane induced decrease of synaptic protein PSD95 expression in hippocampus of neonatal rats ( F (3, 20) = 73.790, P < 0.001) (F) Immunofluorescence results of cleaved-caspase 3 and caspase 12 in hippocampus of all four groups rats. Expressions of cleaved-caspase 3 and caspase 12 in all four groups were presented through bar graphs: (G) for cleaved-caspase 3 ( F (3, 20) = 109.100, P < 0.001) and (H) for caspase 12 ( F (3, 20) = 105.200, P < 0.001). Data were presented as mean ± SEM (n = 6). ∗denotes p < 0.05, ∗∗denotes p < 0.01, ∗∗∗denotes p < 0.001 when comparing the two groups under each end of the capped line. Scale bar = 500 μm.
Article Snippet: The primary antibodies included the following: mouse anti-β-actin (1:2000; Qidongzi, Wuhan, China), mouse anti-SIRT1 (1:500; Cell Signaling Technology, Danvers, MA, USA), rabbit anti-mitofusin 2 (Mfn2) (1:1000; Cell Signaling Technology, Danvers, MA, USA), rabbit anti-protein kinase RNA-like ER kinase (PERK) (1:500; Affinity Biosciences, OH, USA), rabbit anti- C/EBP homologues protein (CHOP) (1:500; Affinity Biosciences, OH, USA), rabbit anti-78 kDa glucose regulated protein (GRP78) (1:500; Affinity Biosciences, OH, USA), rabbit anti-activating transcription factor 4 (ATF4) (1:500; Affinity Biosciences, OH, USA), rabbit anti-cysteine containing aspartate specific protease 12 (caspase 12) (1:500; Proteintech North America, IL, USA), rabbit anti-Bcl-2-associated X protein (Bax) (1:500; Proteintech North America, IL, USA), rabbit anti-post-synaptic density protein 95 (PSD95) (1:1000; Cell Signaling Technology, Danvers, MA, USA), rabbit anti-B-cell lymphoma-2 (Bcl-2) (1:500; Cell Signaling Technology, Danvers, MA, USA), and rabbit anti-cleaved-cysteine containing aspartate specific protease 3 (cleaved-caspase 3).
Techniques: Western Blot, Expressing, Immunofluorescence