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Kenney Cohen posted an update 12 days ago
Rain played an important role in the recovery of microbial and metabolic profiles after chemical accidents. Metabolic profiling and microbial community analysis can serve as a diagnostic tool for ecotoxicological research at chemical accident sites.Feature selection is central to contemporary high-dimensional data analysis. Group structure among features arises naturally in various scientific problems. Many methods have been proposed to incorporate the group structure information into feature selection. However, these methods are normally restricted to a linear regression setting. To relax the linear constraint, we design a new Deep Neural Network (DNN) architecture and integrating it with the recently proposed knockoff technique to perform nonlinear group-feature selection with controlled group-wise False Discovery Rate (gFDR). Experimental results on high-dimensional synthetic data demonstrate that our method achieves the highest power and accurate gFDR control compared with state-of-the-art methods. The performance of Deep-gKnock is especially superior in the following five situations (1) nonlinearity relationship; (2) dimension p greater than sample size n; (3) high between-group correlation; (4) high within-group correlation; (5) large number of associated groups. And Deep-gKnock is also demonstrated to be robust to the misspecification of the feature distribution and the change of network architecture. Moreover, Deep-gKnock achieves scientifically meaningful group-feature selection results for cutting-edge real world datasets.
Prior resting state fMRI studies have revealed that elevated connectivity between the default mode network (DMN) and subgenual prefrontal cortex (sgPFC) connectivity may underly maladaptive rumination, which is a major risk factor for depression. To further evaluate such relationship, we investigated whether posterior regions of the DMN, showed elevated connectivity with the sgPFC in remitted depressed patients (rMDD) and whether this connectivity was related to maladaptive rumination.
We examined whether rMDD (N=20) had elevated EEG posterior DMN – sgPFC functional connectivity when compared to age and sex matched healthy controls (N=17), and whether this posterior DMN – sgPFC connectivity positively correlated with rumination. this website Using minimum norm as the source estimation method, we extracted current density maps from six regions of interest (ROIs) within the posterior DMN. EEG source-space functional connectivity was calculated using the Amplitude Envelope Correlation method.
Relative to controls, rMDD showed increased posterior cingulate cortex (PCC) – sgPFC connectivity in the beta-3 (25-30Hz) band. As hypothesized, PCC – sgPFC connectivity was positively associated with rumination for rMDD, even after controlling for depression and anxiety.
The absence of an MDD patient group and the relatively small sample size can limit the generalizability of the results.
EEG resting state PCC – sgPFC functional connectivity is significantly elevated in rMDD and is associated with rumination, suggesting that EEG PCC – sgPFC connectivity may be useful as a neural marker to identify individuals at risk for depression.
EEG resting state PCC – sgPFC functional connectivity is significantly elevated in rMDD and is associated with rumination, suggesting that EEG PCC – sgPFC connectivity may be useful as a neural marker to identify individuals at risk for depression.
Neuromyelitis optica spectrum disorders (NMOSDs) are autoimmune astrocytopathies with predominant involvement of the optic nerves and spinal cord. The current management is high-dose intravenous methylprednisolone, followed by apheresis therapy if it fails. We aimed to investigate plasma exchange (PE) benefits in corticosteroid-refractory NMOSDs.
From Embase, PubMed, Cochrane, Web of Science, and Clinical Trials, we identified PE-based studies published between Jan 2007 and Dec 2019. We pooled the information of these studies in a binomial meta-analysis. We investigated the factors affecting the efficacy of PE and its adverse events. The effectiveness of PE was assessed using the Expanded Disability Status Scale (EDSS). The timing of PE initiation was assessed using Spearman correlation analysis.
We included 561 records and identified 8 observational studies, including 228 NMOSD patients. The mean time to the initiation of PE was 11 days, and the average volume of each exchange was 1.5-2L. PE treatment reduced the mean EDSS score by -1.04 (95% CI, -1.44 to -0.64). The initiation time of PE significantly affected the outcome (EDSS reduction) (P=0.01; 95% CI, -1.30 to 0.28). In the ≤ 7-day and 8-23-day groups, the mean EDSS decreased by 0.64 (95% CI, -0.93 to -0.34) and 1.41 (95% CI, -1.79 to -1.02), respectively. In addition, PE showed the same efficacy for alleviating the symptoms of NMOSDs, regardless of the day between 8 to 23 days on which it was performed (P=0.29). Thirty-five (20.8%) of the 168 patients had adverse events.
PE can ameliorate severe NMOSDs. PE effectiveness was associated with the duration between disease and the initiation of PE, and the optimal timing for PE initiation is 8 to 23 days after the onset of the disease.
PE can ameliorate severe NMOSDs. PE effectiveness was associated with the duration between disease and the initiation of PE, and the optimal timing for PE initiation is 8 to 23 days after the onset of the disease.
Multiple sclerosis is a neurodegenerative disease thought to be of autoimmune origin. It can lead to development of neurological symptoms and increase the risk of infection from communicable diseases. Thus, vaccines are endorsed to mitigate this risk. However, it has not yet been confirmed whether the dysfunctional immune system of these patients combined with taking immunosuppressants can lead to a dampened immunity in response to the influenza vaccine. Infection with the influenza virus is a concern for multiple sclerosis patients. Previous research on multiple sclerosis patients who have received the influenza vaccine focuses on safety and relapse rates. Studies that focus on the immune response mounted against the vaccine in this patient cohort are scant. This study serves to provide a comprehensive picture of the immunogenicity of the influenza vaccine in MS patients.
A systematic review of compiled research was conducted. Data obtained from the research was used in a meta-analysis using risk differences with a 95% confidence interval.