eIF3-S8, a housekeeping gene that did not vary in expression levels in previous bee brain microarray studies [67], [72], was used as a loading control.
We identified probe sets that were significantly correlated with individual variables, where significance was defined as p < 0.01 and fold change >1.3 (the criteria that widely used in the previous brain microarray studies).
Last year, Karumanchi reviewed the data from his initial microarray studies and identified a second protein that could damage endothelial cells: endoglin.
In this paper we present detailed analyses of the effects of RNA quality on measured transcript intensities and corresponding data analysis strategies in the context of post-mortem brain tissue microarray studies.
We employed a complete loop design with a dye swap, such that each individual wasp appeared on two arrays (8 wasps per group, 5 groups, 40 arrays, for both brain and ovary microarray studies).
Likewise, global gene expression studies of RNA from cortex, cerebellum and hippocampus showed normal transcript levels for flanking genes Hip1, Nsun5, and Pom121 (for location see Fig 1A) while confirming ∼50% reduction of 8 9 intra-deletion transcripts in all three brain regions (Illumina microarray studies done in collaboration with J. Li and R. M. Myers, Stanford Human Genome Center).
To determine transcriptional profiles after stress, mice had been subjected to forced swimming for 5 min at 8 00 h or 12 00 h and then decapitated at 16:00 h in order to isolate the brains for our microarray studies as previously described [ 21] (experimental plan depicted in Fig. 1B).
To the end of 2006, there are over 1100 published reports on microarray studies involving the brain and brain disorders, with nearly 100 SAGE studies of the same.
To further investigate the potential connection between genes related to dominance (our study) and aggression, we compared our complete wasp brain differentially expressed gene list to microarray studies identifying brain-expressed genes associated with aggression in Drosophila melanogaster fruit flies [ 44] and maternal aggression in mice [ 45].
While a clear inflammatory signature was present in the brain as previously reported in microarray studies of aging [11], [47], [48], [50], [116], [117], [118], [119], [120], PIO did not significantly reduce inflammatory markers in the hippocampus.
