Yongyan Yang

ORCID: 0000-0002-2189-2242
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About
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Research Areas
  • Anesthesia and Neurotoxicity Research
  • Intensive Care Unit Cognitive Disorders
  • Anesthesia and Sedative Agents
  • Heme Oxygenase-1 and Carbon Monoxide
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Barrier Structure and Function Studies
  • Hydrogen's biological and therapeutic effects
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Neuroscience and Neuropharmacology Research
  • Cardiac, Anesthesia and Surgical Outcomes
  • Angiogenesis and VEGF in Cancer
  • Cardiac Ischemia and Reperfusion
  • Medical Research and Treatments
  • Hemodynamic Monitoring and Therapy
  • Pain Mechanisms and Treatments
  • Pharmacological Effects of Natural Compounds
  • Dietary Effects on Health
  • Tryptophan and brain disorders
  • Mycobacterium research and diagnosis
  • Neurological Disease Mechanisms and Treatments
  • Memory and Neural Mechanisms
  • Fibromyalgia and Chronic Fatigue Syndrome Research
  • Vitamin D Research Studies
  • High Altitude and Hypoxia
  • Optical Imaging and Spectroscopy Techniques

Tianjin Medical University General Hospital
2017-2025

Tianjin Hospital
2017-2024

Massachusetts General Hospital
2020-2022

Harvard University
2020-2022

XinHua Hospital
2020

Second Affiliated Hospital of Nanchang University
2020

Nanchang University
2020

Shanghai First Maternity and Infant Hospital
2020

Sun Yat-sen University
2020

Tongji University
2020

Background Sevoflurane anesthesia induces Tau phosphorylation and cognitive impairment in neonatal but not adult mice. This study tested the hypothesis that differences brain amounts activity of mitochondria–adenosine triphosphate (ATP)–Nuak1–Tau cascade between mice contribute to age-dependent effects sevoflurane on function. Methods 6- 60-day-old both sexes received with 3% for 2 h daily 3 days. Biochemical methods were used measure Tau, phosphorylated Nuak1, ATP concentrations,...

10.1097/aln.0000000000003452 article EN Anesthesiology 2020-07-14

The intestine plays an important role in the pathogenesis of sepsis. Hydrogen gas (H2), which has anti-oxidative, anti-inflammatory, and anti-apoptotic effects, can be effectively used to treat septic mice. Nuclear factor erythroid 2-related 2 (Nrf2) is a redox-sensitive master switch that regulates expression antioxidant protective enzymes. This study investigated effects 2% H2 on intestinal injuries underlying mechanisms mouse model severe Male Nrf2 knockout mice (Nrf2-KO) wild-type (WT)...

10.1097/shk.0000000000000856 article EN Shock 2017-02-24

Ischemia-reperfusion (I/R) is a critical pathophysiological basis of cognitive dysfunction caused by ischemia stroke. Heme-oxygenase-1 (HO-1) the rate-limiting enzyme for elimination excessive free heme combining with hemopexin (HPX), plasma protein that contributes to eliminating during This study aimed elucidate whether HPX could alleviate in rats subjected cerebral I/R. Rats were randomly divided into five groups: sham, MCAO, Vehicle, and + protoporphyrin IX (ZnPPIX). Cerebral I/R was...

10.1186/s12871-019-0681-2 article EN cc-by BMC Anesthesiology 2019-01-15

ABSTRACT Aims Repeated sevoflurane exposure during the neonatal stage may induce Tau phosphorylation, dendritic spine loss, and neurocognitive impairment in developing brain. Tubulin tyrosine ligase like‐6 (TTLL6), which aggregates dendrites due to missorting, regulates microtubule stability via α‐tubulin polyglutamylation. Meanwhile, Spastin modulates formation by severing microtubules. We hypothesize that repeated treatment impairs remodeling mice enhancing TTLL6‐mediated tubulin...

10.1111/cns.70376 article EN cc-by CNS Neuroscience & Therapeutics 2025-04-01

Vitamin D prevents hypocalcaemia, osteoporosis, and infections, among other problems, is involved in the prevention treatment of cardiovascular neurological diseases. Recently, vitamin was shown to improve cognitive dysfunction caused by Alzheimer's disease vascular dementia. This study aims explore correlation between preoperative serum postoperative disorder (POCD) occurrence elderly patients with gastrointestinal tumors guide perioperative medication use promote early patient...

10.3389/fpsyt.2022.893309 article EN cc-by Frontiers in Psychiatry 2022-04-15

Although the biological relationship between vitamin D (VD) deficiency and cognitive function has been recognized by many scholars, theoretical mechanisms involved are still not well-understood. In this study, we demonstrated role of VD in alleviating dysfunction aged mice caused sevoflurane anesthesia. Forty female C57BL/6 12 months were selected for experiment. (-) (+) mouse models anesthesia established. Mice randomly divided into normal elderly group (NC group), + treatment (NS [VD...

10.3389/fnagi.2022.940106 article EN cc-by Frontiers in Aging Neuroscience 2022-06-10

Ischemia-reperfusion (I/R) is a critical pathophysiological change of ischemic stroke. Heme-oxygenase-1 (HO-1) rate-limiting enzyme eliminating excessive free heme by combining with hemopexin (HPX), plasma protein contributing to alleviating infarct size due ischemia This study was investigate whether HPX could improve angiogenesis after cerebral ischemia-reperfusion via up-regulating HO-1. Rats were randomly divided into five groups: sham, MCAO, MCAO + Vehicle, and protoporphyrin IX...

10.1186/s12871-017-0466-4 article EN cc-by BMC Anesthesiology 2018-01-02

Sevoflurane is the most commonly used general anesthetic in pediatric surgery, but it has potential to be neurotoxic. Previous research found that long-term or multiple sevoflurane exposures could cause cognitive deficits newborn mice not adult mice, whereas short-term single inhalations had little effect on function at both ages. The mechanisms behind these effects, however, are unclear.In current study, 6- and 60-day-old C57bl groups were given 3% plus 60% oxygen for three consecutive...

10.3389/fneur.2022.1056947 article EN cc-by Frontiers in Neurology 2022-12-13

BACKGROUND: Ketamine is an intravenous anesthetic. However, whether ketamine can induce neurotoxicity and neurobehavioral deficits remains largely unknown. Delirium a syndrome of acute brain dysfunction associated with anesthesia surgery in patients, tau protein may contribute to postoperative delirium. Finally, affect the function endosome, key organelle for release from neurons. Therefore, we set out determine effects on delirium-like behavior mice trafficking cultured cells. METHODS: We...

10.1213/ane.0000000000006146 article EN Anesthesia & Analgesia 2022-07-25

With an aging population, the incidence of obstructive sleep apnea syndrome (OSAS) is rising, resulting in a growing number patients undergoing surgery who are also affected by OSAS. The combined impact anesthetic drugs and OSAS-related neurological damage has drawn significant attention. Here, wild-type (WT) Tau-knockout (Tau-KO) mice were subjected to intermittent hypoxia sevoflurane exposure induce OSAS sevoflurane-induced neurotoxicity. Protein expression tau phosphorylation...

10.1016/j.expneurol.2024.115056 article EN cc-by Experimental Neurology 2024-11-12

This study aims to investigate whether androgen deprivation, simulating conditions of aging or disease-induced low testosterone levels, increases the susceptibility male mice sevoflurane neurotoxicity, and supplementation can reverse toxic effects sevoflurane. In here, young were subjected orchiectomy (ORC) induce deprivation. Various techniques, including western blotting, immunofluorescence, Morris Water Maze, Golgi staining, neuronal signal measurement, used evaluate on long-term (ORC 10...

10.1016/j.neuropharm.2024.110261 article EN cc-by-nc-nd Neuropharmacology 2024-12-01

IntroductionCurrent electroencephalogram (EEG) indices for monitoring the depth of anesthesia have not been adjusted age. This study aims to identify most suitable EEG across different age groups.MethodIn here, we conducted a prospective observational trial observe whether features in groups can detect and compare their performance.ResultsIn Group 1, absolute θ had highest prediction probability (Pk) value (0.78 ± 0.07), while relative γ lowest coefficient variation (CV) states 1 (0.160), 2...

10.1080/00207454.2024.2432893 article EN International Journal of Neuroscience 2024-11-20

Objective To investigate the effect of hemopexin (HPX) on promoting endothelial progenitor cells (EPCs) differentiation and neovascularization to protect integrity from toxic heme through oxygenase-1 (HO-1) pathway. Methods Rat EPCs were cultured routinely, randomly divided into 5 groups (at their logarithmic phase): control group, HPX heme+HPX Zn protoporphyrin IX (ZnppIX) group. Cells in group M199 culture medium with 10% fetal calf serum, μg/mL basic fibroblast growth factor 1%...

10.3760/cma.j.issn.1671-8925.2017.08.002 article EN Chinese Journal of Neuromedicine 2017-08-15

Hemopexin (HPX) has the strongest affinity to heme in plasma, which can bind and transfer free hemes. Previous studies have proved that HPX possesses several functions such as antioxidant, anti-apoptosis, immune regulation neuro-protection a variety of disease processes. In recent years, research on protection role cerebrovascular continued making progresses. This article reviewed main physiological function neuronal disease, aimed provide new ideas for clinical use disease. Key words:...

10.3760/cma.j.issn.1673-4378.2019.04.012 article EN Guoji mazuixue yu fusu zazhi 2019-04-15

Abstract Background Ketamine is an anesthetic and antidepressant drug. However, whether ketamine can induce neurotoxicity neurobehavioral deficits remains largely unknown. Delirium a syndrome of acute brain dysfunction that very similar to the presentation after administration. The onset postoperative delirium in patients often accompanied by elevated tau cerebrospinal fluid. And may affect endosome, key organelle for release from neurons. Therefore, we set out determine effects on...

10.21203/rs.3.rs-1362130/v1 preprint EN cc-by Research Square (Research Square) 2022-02-18
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