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Distinct role of primate DLPFC and LIP in hierarchical control of learned saccade sequences.
iScience
January 2025
Key Laboratory of Brain Functional Genomics (Ministry of Education), East China Normal University, Shanghai 200062, China.
Learned action sequences are suggested to be organized hierarchically, but how the various hierarchical levels are processed by different cortical regions remains largely unknown. By training monkeys to perform heterogeneous saccade sequences, we investigated the role of the dorsolateral prefrontal cortex (DLPFC) and the lateral intraparietal cortex (LIP) in sequence planning and execution. The electrophysiological recording revealed that sequence-level initiation information was mostly signaled by DLPFC neurons, whereas subsequence-level transition was largely encoded by LIP neurons.
View Article and Find Full Text PDFEffect of Low-Dose Methylprednisolone in Promoting Neurological Function Recovery after Spinal Cord Injury: Clinical and Animal Studies.
Spine (Phila Pa 1976)
January 2025
Department of Orthopedics, the First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, People's Republic of China.
Study Design: Subgroup analysis of a retrospective clinical and animal trial [Study of different doses of methylprednisolone on functional recovery of spinal cord injury].
Objective: The aimed to investigate the efficacy of low-dose methylprednisolone regimens in promoting neural repair after SCI.
Summary Of Background Data: Spinal cord injury (SCI) can result in sensory, motor, and autonomic nerve dysfunction, often leading to disability or death.
Monitoring of inflammatory preterm responses via myometrial cell based multimodal electrophysiological and optical biosensing platform.
Biosens Bioelectron
January 2025
Department of Chemistry, ZJU-Hangzhou Global Scientific and Technological Innovation Center, School of Medicine, Zhejiang University, Hangzhou, 310058, China; General Surgery Department, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Children's Health, Hangzhou, 310052, China. Electronic address:
Preterm birth (PTB) remains a leading cause of neonatal morbidity and mortality, with inflammation-induced PTB posing a significant challenge due to its complex pathophysiology. To address this, we developed an in vitro platform utilizing hTERT-immortalized human myometrial (hTERT-HM) cells integrated with a multielectrode array (MEA) biosensing system and optical calcium imaging. Compared to primary uterine myometrial cells, hTERT-HM cells exhibit superior reproducibility, high scalability, and convenient manipulation, facilitating the consistent and large-scale investigations.
View Article and Find Full Text PDFBrain microenvironment-remodeling nanomedicine improves cerebral glucose metabolism, mitochondrial activity and synaptic function in a mouse model of Alzheimer's disease.
Biomaterials
January 2025
144 College St, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, ON, M5S 3M2, Canada. Electronic address:
The development of disease-modifying therapeutics for Alzheimer's disease remains challenging due to the complex pathology and the presence of the blood-brain barrier. Previously we have described the investigation of a brain-penetrating multifunctional bioreactive nanoparticle system capable of remodeling the hypoxic and inflammatory brain microenvironment and reducing beta-amyloid plaques improving cognitive function in a mouse model of Alzheimer's disease. Despite the linkage of hypoxia and inflammation to metabolic alteration, the effects of this system on modulating cerebral glucose metabolism, mitochondrial activity and synaptic function remained to be elucidated.
View Article and Find Full Text PDFBioelectricity is a universal multifaced signaling cue in living organisms.
Mol Biol Cell
February 2025
Allen Discovery Center at Tufts University, Medford, MA 02155.
The cellular electrical signals of living organisms were discovered more than a century ago and have been extensively investigated in the neuromuscular system. Neuronal depolarization and hyperpolarization are essential for our neuromuscular physiological and pathological functions. Bioelectricity is being recognized as an ancient, intrinsic, fundamental property of all living cells, and it is not limited to the neuromuscular system.
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