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BACKGROUND Negative interpretation biases are thought to be core symptoms of mood and anxiety disorders. However, prior work using cognitive tasks to measure such biases is largely restricted to case-control group studies, which cannot be used for inference about individuals without considerable additional validation. Moreover, very few measures are fully translational (i.e., can be used across animals and humans in treatment-development pipelines). This investigation aimed to produce the first measure of negative cognitive biases that is both translational and sensitive to individual differences, and then to determine which specific self-reported psychiatric symptoms are related to bias. METHODS A total of 1060 (n = 990 complete) participants performed a cognitive task of negative bias along with psychiatric symptom questionnaires. We tested the hypothesis that individual levels of mood and anxiety disorder symptomatology would covary positively with negative bias on the cognitive task using a combination of computational modeling of behavior, confirmatory factor analysis, exploratory factor analysis, and structural equation modeling. RESULTS Participants with higher depression symptoms (β = -.16, p = .017) who were older (β = -.11, p = .001) and had lower IQ (β = .14, p less then .001) showed greater negative bias. Confirmatory factor analysis and structural equation modeling suggested that no other psychiatric symptom (or transdiagnostic latent factor) covaried with task performance over and above the effect of depression, while exploratory factor analysis suggested combining depression/anxiety symptoms in a single latent factor. Generating groups using symptom cutoffs or latent mixture modeling recapitulated our prior case-control findings. CONCLUSIONS This measure, which uniquely spans both the clinical group-to-individual and preclinical animal-to-human generalizability gaps, can be used to measure individual differences in depression vulnerability for translational treatment-development pipelines. BACKGROUND Abnormalities in cortical excitation and inhibition (E/I) balance are thought to underlie sensory and information processing deficits in schizophrenia. Deficits in early auditory information processing mediate both neurocognitive and functional impairment and appear to be normalized by acute pharmacologic challenge with the NMDA antagonist memantine (MEM). METHODS Thirty-six subjects with a diagnosis of schizophrenia and 31 healthy control subjects underwent electroencephalographic recordings. Subjects ingested either placebo or MEM (10 or 20 mg) in a double-blind, within-subject, crossover, randomized design. buy Sotorasib The aperiodic, 1/f-like scaling property of the neural power spectra, which is thought to index relative E/I balance, was estimated using a robust linear regression algorithm. RESULTS Patients with schizophrenia had greater aperiodic components compared with healthy control subjects (p less then .01, d = 0.64), which was normalized after 20 mg MEM. Analysis revealed a significant dose × diagnosis interaction (p less then .0001, d = 0.82). Furthermore, the MEM effect (change in aperiodic component in MEM vs. placebo conditions) was associated with baseline attention and vigilance (r = .54, p less then .05) and MEM-induced enhancements in gamma power (r = -.60, p less then .01). CONCLUSIONS Findings confirmed E/I balance abnormalities in schizophrenia that were normalized with acute MEM administration and suggest that neurocognitive profiles may predict treatment response based on E/I sensitivity. These data provide proof-of-concept evidence for the utility of E/I balance indices as metrics of acute pharmacologic sensitivity for central nervous system therapeutics. INTRODUCTION ACGME Milestones describe 6 areas of proficiency, indicating readiness for practice. Each is divided into 5 levels of mastery; Level 1 (new trainees) through Levels 4 (graduation) and 5 (aspirational). Milestones reporting began Spring 2016. We used Milestones to assess graduated fellows. MATERIALS AND METHODS We conducted phone interviews with previous fellows and collected demographic information including practice setting. We asked graduates if they fulfilled each example of mastery and recorded their answers. RESULTS A total of 22 fellows graduated from 2010 to 2017; 15 responded (10 academic, 5 private). Milestones in which nearly all respondents performed well (Level 4+) were PC1, MK1, SBP2, SBP4, PROF1-4, ICS1-3. Some were more challenging (PC2, MK2, SBP1/3/5, PBL1). For PC2, 2 respondents achieved Level 1 (did not perform fine-needle aspirations). For MK2, 2 respondents achieved Level 1 (did not evaluate Papanicolaou). For SBP1, 80% in private practice achieved Level 5; 50% in academics achieved Level 3. For SBP3, 80% in private practice achieved Level 4+; 100% in academics achieved maximum Level 2. For SBP5, 60% of all respondents achieved maximum Level 3; only 1 achieved Level 5. CONCLUSIONS Many Milestones are attainable. Eleven of 18 yielded Level 4+ from most respondents. Three (PC2, MK1, MK2) yielded rare Level 1 due to scope of practice. Others (SBP1, SBP3) reflect more of an all-or-nothing phenomenon. For SBP5, most respondents achieved Level 3; only 1 achieved Level 5. Some Milestones are highly dependent on practice setting, and others remain aspirational. The human microbiome is impressively immense and participates in many aspects of our health and wellness, particularly involving the development and maintenance of a healthy immune system. Not only do our microbes teach the immune system to fight infection, they also teach immune tolerance and help maintain homeostasis. From this knowledge, we have learned that the loss of tolerance to microbiota in both innate and adaptive processes plays an important role in immune-mediated and autoimmune disease. In this chapter, we will be discussing about methods used to study the microbiome, both old and new methods, fundamental concepts that have taken hold within the field, and how these principles relate to rheumatology, including thoughts on how microbiome research may be focused in the next decade.
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