Li Sun

ORCID: 0000-0003-1169-4653
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About
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Research Areas
  • Acute Ischemic Stroke Management
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Neurological Disease Mechanisms and Treatments
  • Intracerebral and Subarachnoid Hemorrhage Research
  • Peripheral Neuropathies and Disorders
  • Alzheimer's disease research and treatments
  • Gastrointestinal disorders and treatments
  • Genomics and Phylogenetic Studies
  • Gut microbiota and health
  • Multiple Sclerosis Research Studies
  • Systemic Lupus Erythematosus Research
  • Dementia and Cognitive Impairment Research
  • Immunotherapy and Immune Responses
  • Axon Guidance and Neuronal Signaling
  • Diabetic Foot Ulcer Assessment and Management
  • Neurological Disorders and Treatments
  • Microbial Community Ecology and Physiology
  • Pancreatitis Pathology and Treatment
  • Neuroscience and Neuropharmacology Research
  • Pancreatic and Hepatic Oncology Research
  • Cancer, Lipids, and Metabolism
  • IgG4-Related and Inflammatory Diseases
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Cerebrovascular and Carotid Artery Diseases
  • Reproductive System and Pregnancy

First Hospital of Jilin University
2016-2025

Jilin University
2016-2025

Children's Hospital of Fudan University
2019-2025

Nantong University
2024

Xi'an Medical University
2023

Air Force Medical University
2023

Anhui Normal University
2017-2023

Wuhan University
2022

Jilin Medical University
2012-2022

Wannan Medical College
2022

T lymphocytes are increasingly recognized as key modulators of detrimental inflammatory cascades in acute ischaemic stroke, but the potential cell-targeted therapy brain ischaemia is largely unexplored. Here, we characterize effect inhibiting leukocyte very late antigen-4 and endothelial vascular cell adhesion molecule-1-mediated invasion-currently most effective strategy primary neuroinflammatory disease murine stroke models. Very blockade by monoclonal antibodies improved outcome models...

10.1093/brain/awr008 article EN Brain 2011-02-22

Therapeutic modification of the postischemic immune processes is a key target current experimental stroke research. For successful translation into clinical setting, studies must account for impact different strokes on system including susceptibility to infection. Herein, we characterize 3 ischemia models systemic immunological and microbiological parameters.In C57Bl/6 mice (n=235), middle cerebral artery was occluded (MCAO) either permanently by distal coagulation or transiently an...

10.1161/strokeaha.109.549618 article EN Stroke 2009-05-15

Alzheimer’s disease is an age-related neurodegenerative disorder with a complex and incompletely understood pathogenesis. Despite extensive research, cure for has not yet been found. Oxidative stress mediates excessive oxidative responses, its involvement in pathogenesis as primary or secondary pathological event widely accepted. As member of the selenium-containing antioxidant enzyme family, glutathione peroxidase 4 reduces esterified phospholipid hydroperoxides to maintain cellular redox...

10.4103/nrr.nrr-d-23-01343 article EN cc-by-nc-sa Neural Regeneration Research 2024-03-01

Hyperbaric oxygen (HBO) has been shown to protect the brain parenchyma against transient focal cerebral ischemia, but its effects on ischemic microcirculation are largely unknown. We examined potential of HBO reduce postischemic blood-brain barrier (BBB) damage and edema.Wistar rats C57/BL6 mice underwent occlusion middle artery (MCAO) for 2 hours. Forty minutes after filament introduction, animals breathed either 100% O2 at 3.0 atmospheres absolute (ata; group) or 1.0 ata (control) 1 hour...

10.1161/01.str.0000173408.94728.79 article EN public-domain Stroke 2005-07-15

The contribution of neuroinflammation and specifically brain lymphocyte invasion is increasingly recognised as a substantial pathophysiological mechanism after stroke. FTY720 potent treatment for primary neuroinflammatory diseases by inhibiting circulation immigration. Previous studies using transient focal ischemia models showed protective effect but did only partially characterize the involved pathways. We tested neuroprotective properties in permanent cortical analyzed underlying...

10.1371/journal.pone.0021312 article EN cc-by PLoS ONE 2011-06-20

Depression is a common mental disorder that associated with memory dysfunction. Ketamine has recently been demonstrated to be rapid antidepressant. The mechanisms underlying how depression induces dysfunction and ketamine relieves depressive symptoms remain poorly understood. This work compared three groups of male C57BL/6J mice: mice exposed chronic social defeat stress (CSDS) induce depression-like phenotype, treated ketamine, control were not CSDS or ketamine. Spatial working long term...

10.3389/fnbeh.2018.00229 article EN cc-by Frontiers in Behavioral Neuroscience 2018-10-09

Background The Prognostic Nutritional Index (PNI) has been described as a useful screening tool for patient prognosis in several diseases. As potential diagnostic index, it attracted the interest of many physicians. However, correlation between PNI and post-stroke cognitive impairment (PSCI) remains unclear.

10.1080/1028415x.2024.2330786 article EN Nutritional Neuroscience 2024-04-02

Hyperbaric oxygen (HBO) and normobaric hyperoxia (NBO) protect the brain parenchyma cerebral microcirculation against ischemia. We studied their effect on secondary hemorrhage after thrombolysis in two thromboembolic middle artery occlusion (MCAO) (tMCAO) models. Beginning 60 minutes tMCAO with either thrombin-induced thromboemboli (TT) or calcium-induced (CT), spontaneously hypertensive rats ( n=96) breathed air, 100% O 2 (NBO), at 3 bar for 1 hour. Immediately thereafter, recombinant...

10.1038/jcbfm.2010.50 article EN public-domain Journal of Cerebral Blood Flow & Metabolism 2010-04-28

Consumption of the flavonoid quercetin exerts beneficial effects on many chronic diseases. The mechanisms involved in vasorelaxant effect remain uncertain. In present study, we examined role vasodilation and rapid endothelial nitric oxide synthase (eNOS) activity cells. Quercetin induced a rapid, dose-dependent phosphorylation eNOS at serine 1179. PKA, Akt ERK1/2 were all quickly phosphorylated process too, but not AMPK CaMK II. specific kinase inhibitors for or could abolish...

10.1159/000337182 article EN Pharmacology 2012-01-01

A growing number of studies have demonstrated that the activity and expression level sirtuin-1 (SIRT1) are decreased in asthma patients; however, mechanisms underlying SIRT1 function still not completely understood. Interleukin (IL)-6 plays important roles inflammation during allergic asthma. In this study, we examined whether loss regulated IL-6 further verified mechanisms.The human airway epithelial cell line 16HBE was used to test effects inhibitor (salermide) on IL-6. mRNA protein were...

10.1159/000484119 article EN cc-by-nc-nd Cellular Physiology and Biochemistry 2017-01-01

Abstract Pancreatic stellate cells ( PSC s) play a critical role in fibrogenesis during alcoholic chronic pancreatitis ACP ). Transforming growth factor‐beta1 TGF ‐β1) is key regulator of extracellular matrix production and activation. Endotoxin lipopolysaccharide LPS ) has been recognized as trigger factor the pathogenesis . This study aimed to investigate mechanisms by which modulates ‐β1 signalling pancreatic fibrosis. Sprague‐Dawley rats fed with Lieber‐DeCarli alcohol ALC liquid diet...

10.1111/jcmm.13526 article EN cc-by Journal of Cellular and Molecular Medicine 2018-02-09

Enzyme-based host depletion significantly improves the sensitivity of clinical metagenomics. Recent studies found that real-time adaptive sequencing DNA molecules was achieved using a nanopore machine, which enabled effective enrichment microbial sequences. However, few have compared enzyme-based and for efficiency.To compare efficiency methods, present study collected samples from eight children with respiratory tract infections. The same were subjected to standard combination methods. We...

10.1186/s12864-021-08023-0 article EN cc-by BMC Genomics 2021-10-09

Abstract Immunoinflammation is associated with the development of post-stroke cognitive impairment (PSCI), however, peripheral immunity has not been fully explored. We aimed to investigate association between PSCI and immune indicators, including neutrophil, lymphocyte, mononuclear percentages counts; systemic inflammation index; platelet-to-lymphocyte ratio; neutrophil-to-lymphocyte ratio (NLR); lymphocyte-to-monocyte ratio. A total 224 patients acute minor ischemic stroke or transient...

10.1038/s41598-024-67172-w article EN cc-by Scientific Reports 2024-07-13

The management of acute ischemic stroke during anticoagulation with a novel oral anticoagulant (NOAC) is challenging because intravenous thrombolysis contraindicated putative increased risk intracerebral hemorrhagic complications. We examined the secondary postischemic hemorrhage after in rodents pretreated rivaroxaban or warfarin. Mice were either (30 mg/kg), warfarin (target international normalized ratio 2 to 3) vehicle. After 3 hours, middle cerebral artery occlusion (MCAO), mice...

10.1038/jcbfm.2013.226 article EN Journal of Cerebral Blood Flow & Metabolism 2013-12-18

Pancreatic stellate cells (PSCs) play a key role in fibrogenesis during alcoholic chronic pancreatitis (ACP). Transforming growth factor-β1 (TGF-β1) is major regulator of PSC activation and extracellular matrix production. Interleukin-6 (IL-6) has shown to participate TGF-β1 production rat activation. This study aimed investigate whether IL-6 promotes human collagen 1(Col1) through the TGF-β1/Smad pathway. Our results showed that expression IL-6R activated PSCs macrophages (Mφs) were...

10.1016/j.cyto.2021.155536 article EN cc-by-nc-nd Cytokine 2021-04-21

Abstract Objective The aim of this study was to evaluate demographic, clinical, laboratory, imaging, histopathology characteristics, and treatment responses children with Chronic nonbacterial osteomyelitis (CNO). Methods Retrospective multi-center case series pediatric patients diagnosed CNO treated at five tertiary centers in south China. Results Totally there were 18 as between 2014 2020. median age onset 9.2 years (range 3.7–13.1) 55.6% female. Median delay diagnosis 10.9 months...

10.1186/s12969-021-00657-4 article EN cc-by Pediatric Rheumatology 2022-01-03

The usefulness of hyperbaric oxygen (HBO) and normobaric hyperoxia in acute ischemic stroke is being reexplored because both improve outcome experimental cerebral ischemia. However, even the basic mechanisms underlying therapy are poorly understood. We investigated effect therapies on tissue hypoxia transcription factor hypoxia-inducible factor-1 alpha.Mice were subjected to filament-induced middle artery occlusion for 2 hours. Twenty-five minutes after filament introduction, mice breathed...

10.1161/strokeaha.107.490599 article EN Stroke 2008-02-01
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