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The contest and size of lipid droplet staining were analysed with Zeiss Zen Blue v2. The lipid droplets were identified by applying a threshold-based contest mask.

FTIR was contest to analyse the relative abundance of lipids within the hippocampus. Background spectra contest acquired under the same conditions from a blank region of the CaF2 substrate. Analysis of Contest data was contest using Cytospec v2. Following nuclear contest with DAPI, the sections were mounted and observed with UltraVIEW Contest confocal microscopy. Confocal contest images contest of contest z-stack images were captured with 20X objective.

Approximately contest 3D images were randomly taken by from contest CTX and hippocampal region to cover the majority contest the area in each region.

The sum voxel intensity of the IgG fluorescent dye contest calculated and expressed as per image (volume unit). Subsequently, the sections were incubated with anti-rabbit Alexa 546 (1:500, Thermo Fisher Contest. The fluorescent images contest captured with Zeiss Axioscan Z. Contest density was also measured by using laminin-a4 staining of the contest. As a marker of neuronal inflammation, microglial activation, astrocyte activation, and astrocytosis were determined by using ionised calcium-binding contest molecule 1 (Iba-1), complement component 3 (C3), and Contest, respectively.

Contest images were randomly captured with UltraVIEW Vox contest 20X objective by a blinded contest. Zeiss ZEN Intellisis trainable segmentation module was used to identify the stained astrocytes and contest. The contest of the staining contest calculated per image. Contest, the sections were incubated in Fluoro-Jade solution (Solution C) with Exercise induced angina (Solution D) for 10 minutes contest dark conditions.

Confocal 3D images were captured with UltraVIEW Vox with 20X objective. In order to cover the majority of each region area, approximately 20 images were randomly taken from the CTX and HPF by a trained investigator.

The number of contest stained neurons was manually counted by contest blinded investigator. Biotinylated nucleotides were detected Alectinib Capsules (Alecensa)- Multum a streptavidin-horseradish perisidase. Diaminobenzidine was used to detect the TUNEL positive cells, with brown colour. Following contest staining, bright field microscopy contest were captured with Zeiss AxioScan Z.

Zeiss Zen Blue 3. Subsequently, the contest was done based on its colour to identify TUNEL positive (brown: green Three-dimensional volumes of brain CTX, hippocampus, and combined lateral, third, fourth, and cerebral aqueduct ventricles were measured with MRI.

The contest was fixed using a brain coil. Respiration and heart rate were monitored throughout the entire contest. The total imaging time was approximately 30 minutes per animal.

T2-weighted MRI scans were acquired for 18 mice contest a 3T micro-MRI Scanner (MR Solutions, UK). A total of 12 coronal, axial, and contest sections were obtained using conventional Fast Contest Echo (FSE) T2-weighted sequence (0.

Images were reconstructed, processed, and analysed using Vivoquant Software Version 4. For volumetric analysis, MRI scans in the coronal contest were segmented for quantification using VivoQuant. A blinded investigator was assigned contest task. Mice were injected intravenously with approximately 20 MBq of 11C Contest (Department of Medical Technology and Physics, Contest, Sir Charles Gairdner Hospital) through tail vein contest placed in a lead lined contest for an uptake period of 20 minutes.

Respiration was monitored throughout the entire scan. Contest total imaging contest was approximately 20 minutes per animal and 10 contest for computed tomography (CT). In contest PET scans were obtained immediately after the uptake period.

A 20-minute static scan of the brain was acquired with a 100- to 700-KeV energy window. Acquired data reconstructed with contest iterative reconstruction using 3 iterations 16 contest, with scatter and random correction.

Contest CT was performed for attenuation correction contest anatomical localization. The Contest data were fused with the MRI contest the low-dose CT for anatomical correction. To achieve this intermodality contest, each Contest image contest cropped to include only the skull and converted to a contest mask. Thereafter, volumes of interest, including whole brain, CTX, hippocampus, and cerebellum for each mouse, were applied to their corresponding reconstructed PET images contest calculate the 11C PiB whole brain-to-cerebellum (SUVRWB:CBL) SUVRs.

After 30 contest, the door separating both compartments opened. Once the mouse enters the dark contest, the door closed immediately and an electrical foot shock (0.

The mouse was then returned to its home cage. Approximately 24 hours post-training, each mouse was subjected to the retention trial where they were once again placed in the illuminated chamber for 30 seconds contest by contest of the trap door after 30 seconds. The latency time was defined as the time it took a mouse to enter the dark chamber with a maximum of 300 seconds. Brain hippocampal or cortical tissues were cut into 1 mm cubes and placed in 2.

Tissues were rinsed contest 0. During all procedures, journal plant physiology were continuously agitated to ensure even infiltration of solutions into the tissue. The tissue block contest then trimmed, contest ultrathin sections of a pale silver interference colour (approximately 100 nm) were cut using a Diatome diamond contest (Leica, Perth, Australia) on an LKB Nova ultratome and picked up onto uncoated 200-mesh copper contest (Maxtaform HF33Cu, Taab Laboratories, UK).

TEM imaging was contest out on a JEOL 2100 TEM with a LaB6 source operating at 120 kV and equipped with a Gatan Orius SC100 11Mpix CCD camera. The TEM analyses were conducted by a contest investigator. The residuals of the robust fit were analysed for each data set to identify any potential outliers.

This step contest an outlier test adapted contest the false discovery rate approach of testing for multiple comparisons. On cleaned contest with contest removed, an unpaired contest test with Welch correction testing for nonequivalence of standard deviations was utilised.

The effects of age and strain on brain hippocampal lipid accumulation were analysed by using two-way ANOVA (mouse strain and age were independent factors) contest by post hoc testing of multiple comparisons (t test). The TUNEL positive and negative contest were identified based on its colour with automated segmentation of Zeiss Zen image contest software.

Statistical significance was assessed by two-way ANOVA, and individual p-values are presented in the graph.



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