-
Bitsch Kusk posted an update 4 days, 12 hours ago
By using the latent curve modeling we identified a delayed habituation in patients treated with antipsychotics, suggesting that antipsychotic treatment should be considered as a confound when investigating habituation in schizophrenia.
Our results suggest that acute pharmacological treatment does not normalize PPI in FEP patients but should be considered as a confound when investigating habituation in these patients.
Our results suggest that acute pharmacological treatment does not normalize PPI in FEP patients but should be considered as a confound when investigating habituation in these patients.Antipsychotic use is associated with an increased risk of type 2 diabetes. Recent work suggests antipsychotics can induce insulin resistance immediately and independently of weight gain, and that this may occur via the central nervous system (CNS). We have previously shown that the highly effective and widely prescribed antipsychotic, olanzapine inhibits CNS insulin-mediated suppression of hepatic glucose production, but the mechanisms remain unknown. The ATP-sensitive potassium (KATP) channel is a key metabolic sensor downstream of hypothalamic insulin signalling, involved in the maintenance of glucose homeostasis. Thus, the possibility arises that olanzapine inhibits central KATP channel activation to disrupt glucose metabolism. We replicate that intracerebroventricular (ICV) administration of the KATP channel activator, diazoxide, suppresses hepatic glucose production and additionally demonstrate stimulation of peripheral glucose utilization. We report that olanzapine inhibits the effects of central KATP channel activation resulting in perturbation of whole body insulin sensitivity, specifically via inhibition of glucose utilization, while leaving central KATP channel-mediated suppression of glucose production intact. Perturbation of KATP channel action in the CNS could represent a novel mechanism of antipsychotic-induced diabetes.Although visual processing impairments have been explored in schizophrenia (SZ), their underlying neurobiology of the visual processing impairments has not been widely studied. Also, while some research has hinted at differences in information transfer and flow in SZ, there are few investigations of the dynamics of functional connectivity within visual networks. JNK Inhibitor VIII chemical structure In this study, we analyzed resting-state fMRI data of the visual sensory network (VSN) in 160 healthy control (HC) subjects and 151 SZ subjects. We estimated 9 independent components within the VSN. Then, we calculated the dynamic functional network connectivity (dFNC) using the Pearson correlation. Next, using k-means clustering, we partitioned the dFNCs into five distinct states, and then we calculated the portion of time each subject spent in each state, which we termed the occupancy rate (OCR). Using OCR, we compared HC with SZ subjects and investigated the link between OCR and visual learning in SZ subjects. Besides, we compared the VSN functional connectivity of SZ and HC subjects in each state. We found that this network is indeed highly dynamic. Each state represents a unique connectivity pattern of fluctuations in VSN FNC, and all states showed significant disruption in SZ. Overall, HC showed stronger connectivity within the VSN in states. SZ subjects spent more time in a state in which the connectivity between the middle temporal gyrus and other regions of VNS is highly negative. Besides, OCR in a state with strong positive connectivity between the middle temporal gyrus and other regions correlated significantly with visual learning scores in SZ.Eyespots on the wings of different nymphalid butterflies have become valued models in eco-evo-devo. They are ecologically significant, evolutionarily diverse, and developmentally tractable. Their study has provided valuable insight about the genetic and developmental basis of inter-specific diversity and intra-specific variation, as well as into other key themes in evo-evo-devo evolutionary novelty, developmental constraints, and phenotypic plasticity. Here we provide an overview of eco-evo-devo studies of butterfly eyespots, highlighting previous reviews, and focusing on both the most recent advances and the open questions expected to be solved in the future.Spatially resolved transcriptomics (SRT) offers the promise of understanding cells and their modes of dysfunction in the context of intact tissues. Technologies for SRT have advanced rapidly with a large number being published in recent years. Diverse methods for SRT produce data at widely varying depth, throughput, accessibility and cost. Many published SRT methods have been demonstrated only in their labs of origin, while others have matured to the point of commercialization and widespread availability. Here we review technologies for SRT, and their application in studies of tumor heterogeneity.Medical sociologists widely conceptualize illegality as a social determinant of health, implicating immigration law but not health care law in immigrant health disparities. Contributing to an emerging literature on legal violence in the context of health care, I explore how the Harris Health System in Houston, Texas legally affects low-income undocumented migrants’ lives as they seek care. Drawing on eleven months of ethnographic and interview research with migrants and volunteers at a community-based organization, I argue that the health care system legally exacerbates migrant vulnerability in particular ways. Clerical staff follow medical protocol to deny migrants care on the basis of legibility (i.e., a photo ID), not legality (i.e., legal status), resulting in two classifications of illegality – what I term legible and illegible illegality. The former keeps migrants visible to the state but offers potential care, and the latter legally relegates migrants to the exploitative conditions of informal home care and/or a protracted state of suffering where, for many, death is the only recourse. This research shows that without substantive health reform, health practitioners – physicians, social workers, clerical staff, and home care workers – play an (in)direct role in shaping and normalizing immigrant health disparities.