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Astrocytic deletion of protein kinase R-like ER kinase (PERK) does not affect learning and memory in aged mice but worsens outcome from experimental stroke
J Neurosci Res. 2023 Jun 14. doi: 10.1002/jnr.25224. Online ahead of print.ABSTRACTAging is associated with cognitive decline and is the main risk factor for a myriad of conditions including neurodegeneration and stroke. Concomitant with aging is the progressive accumulation of misfolded proteins and loss of proteostasis. Accumulation of misfolded proteins in the endoplasmic reticulum (ER) leads to ER stress and activation of the unfolded protein response (UPR). The UPR is mediated, in part, by the eukaryotic initiation factor 2α (eIF2α) kinase protein kinase R-like ER kinase (PERK). Phosphorylation of eIF2α reduces pro...
Source: Cell Research - June 14, 2023 Category: Cytology Authors: Anirudhya Lahiri James C Walton Ning Zhang Neil Billington A Courtney DeVries Gordon P Meares Source Type: research

Neuro faces of beneficial T cells: essential in brain, impaired in aging and neurological diseases, and activated functionally by neurotransmitters and neuropeptides
Neural Regen Res. 2023 Jun;18(6):1165-1178. doi: 10.4103/1673-5374.357903.ABSTRACTT cells are essential for a healthy life, performing continuously: immune surveillance, recognition, protection, activation, suppression, assistance, eradication, secretion, adhesion, migration, homing, communications, and additional tasks. This paper describes five aspects of normal beneficial T cells in the healthy or diseased brain. First, normal beneficial T cells are essential for normal healthy brain functions: cognition, spatial learning, memory, adult neurogenesis, and neuroprotection. T cells decrease secondary neuronal degeneration,...
Source: Cell Research - December 1, 2022 Category: Cytology Authors: Mia Levite Source Type: research

Predicting Pain in People With Sickle Cell Disease in the Day Hospital Using the Commercial Wearable Apple Watch: Feasibility Study
CONCLUSIONS: The strong performance of the model in all metrics validates feasibility and the ability to use data collected from a noninvasive device, the Apple Watch, to predict the pain scores during VOCs. It is a novel and feasible approach and presents a low-cost method that could benefit clinicians and individuals with sickle cell disease in the treatment of VOCs.PMID:36917171 | DOI:10.2196/45355
Source: Cell Research - March 14, 2023 Category: Cytology Authors: Rebecca Sofia Stojancic Arvind Subramaniam Caroline Vuong Kumar Utkarsh Nuran Golbasi Olivia Fernandez Nirmish Shah Source Type: research

Edaravone Dexborneol Alleviates Neuroinflammation by Reducing Neuroglial Cell Proliferation and Suppresses Neuronal Apoptosis/Autophagy in Vascular Dementia Rats
In this study, we established the VD model of rats by bilateral carotid artery occlusion to explore the neuroprotective effect of EDB and its mechanism. Morris Water Maze test was applied to assess the cognitive function of rats. H&E and TUNEL staining were applied to observe the cellular structure of the hippocampus. Immunofluorescence labeling was used to observe the proliferation of astrocytes and microglia. ELISA was applied to examine the levels of TNF-α, IL-1β and IL-6, and RT-PCR was applied to examine their mRNA expression levels. Western blotting was applied to examine apoptosis-related proteins (Bax, Bcl-2,...
Source: Cell Research - June 20, 2023 Category: Cytology Authors: Jiawei Zhang Yining Xiao Hongna Liu Lili Xu Xing Guo Yaran Gao Meixi Li Jing Xu Qianqian Qi Peiyuan Lv Source Type: research