Fig 1: Detection of RasGRP1 protein concentration in the serum of healthy controls and schizophrenia patients. Analysis of correlation between age and RasGRP1 serum concentration of (a) control subjects (CTR, n = 39) and (b) SCZ patients (SCZ, n = 40). Analysis of (c) RasGRP1 concentration (ng/mL) in serum of SCZ-affected patients (SCZ, n = 40) and control subjects (CTR, 39). * p < 0.05 compared to control group (Unpaired t-test). Multivariable regression analysis was performed against age.
Fig 2: Lack of correlation between RasGRP1 mRNA and protein levels with age and PMI in the hippocampus of schizophrenia patients. Analysis of correlation between age and mRNA and protein levels of RasGRP1 in post-mortem hippocampus of (a,e) control subjects (CTR, RasGRP1 mRNA: n = 18, RasGRP1 protein: n = 20) and (b,f) SCZ patients (SCZ, RasGRP1 mRNA: n = 19, RasGRP1 protein: n = 20). Analysis of correlation between PMI with mRNA and protein levels of RasGRP1 in DLPFC of (c,g) control subjects (CTR, RasGRP1 mRNA: n = 18, RasGRP1 protein: n = 20) and (d,h) SCZ patients (SCZ, RasGRP1 mRNA: n = 19, RasGRP1 protein: n = 20).
Fig 3: Increased RasGRP1 mRNA levels in the DLPFC of patients with SCZ. Expression levels of (a) RasGRP1 mRNA in the post-mortem DLPFC of SCZ patients (SCZ) (n = 18) and control subjects (CTRL) (n = 19). Quantification of western blot analysis of (b) RasGRP1 protein levels in the total homogenates of post-mortem DLPFC of SCZ-affected patients (SCZ) (n = 20) and control subjects (CTRL) (n = 19). The variations of RasGRP1 protein levels in patients affected by SCZ are expressed as percentage (%) of the control subjects. All markers were normalized to GAPDH for variation in loading and transfer; (c) representative images of immunoblots of RasGRP1 performed in the DLPFC of SCZ patients and control subjects. Each dot represents value from a single subject. * p < 0.05 compared to control group (Unpaired t-test). Multivariable regression analysis was performed against age and post-mortem interval (PMI).
Fig 4: RasGRP1 protein levels negatively correlates with age but not with PMI in the DLPFC of schizophrenia patients. Analysis of correlation between age and mRNA/protein levels of RasGRP1 in the post-mortem DLPFC of (a,e) control subjects (CTR, n = 19) and (b,f) SCZ patients (SCZ, RasGRP1 mRNA: n = 18, RasGRP1 protein: n = 20). Analysis of correlation between PMI with mRNA and protein levels of RasGRP1 in the DLPFC of (c,g) control subjects (CTR, n = 19) and (d,h) SCZ patients (SCZ, RasGRP1 mRNA: n = 18, RasGRP1 protein: n = 20).
Fig 5: Unaltered RasGRP1 mRNA and protein levels in the hippocampus of schizophrenia patients. Expression levels of (a) RasGRP1 mRNA in the post-mortem hippocampus of SCZ-affected patients (SCZ) (n = 19) and control subjects (CTRL) (n = 18). Quantification of western blot analysis of (b) RasGRP1 protein levels in the total homogenates of post-mortem hippocampus of SCZ-affected patients (SCZ) (n = 20) and control subjects (CTRL) (n = 20). The variations of RasGRP1 protein levels in patients affected by SCZ are expressed as percentage (%) of the control subjects. All markers were normalized to GAPDH for variations in loading and transfer; (c) representative images of immunoblots of RasGRP1 performed in the hippocampus of SCZ patients and control subjects. Each dot represents value from a single subject. Unpaired t-test was performed in all analyses reported.
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