Publications by authors named "Li-qiang Wang"

Article Synopsis
  • Over 200 genetic mutations in the SOD1 gene are associated with ALS, with two specific mutations (H46R and G85R) showing reduced metal ion binding.
  • Two cryo-electron microscopy structures of amyloid fibrils formed by these mutants reveal unique structural features, including a serpentine arrangement of β strands and specific interactions that stabilize the fibrils.
  • The mutant fibrils are more toxic and enhance the aggregation of normal SOD1, leading to mitochondrial dysfunction and cell death through ferroptosis, providing new insights into the molecular mechanisms behind ALS.
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Purpose: The purpose of this study was to evaluate the long-term incidence, risk factors, and the management of corneal melt following Boston type I keratoprosthesis (B-KPro I) implantation.

Methods: This is a retrospective observational case series. Data were collected regarding demographics, preoperative characteristics, incidence, and outcomes of corneal melt in 102 patients who underwent B-KPro I in the Chinese PLA General Hospital between 2011 and 2018, with a follow-up period ranging from 4 to 11 years.

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The cellular prion protein (PrP) is required for skeletal muscle function. Here, we report that a higher level of PrP accumulates in the cytoplasm of the skeletal muscle of six myopathy patients compared to controls. PrP inhibits skeletal muscle cell autophagy, and blocks myoblast differentiation.

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Prion diseases are a group of transmissible neurodegenerative diseases primarily caused by the conformational conversion of prion protein (PrP) from α-helix-dominant cellular prion protein (PrP) to β-sheet-rich pathological aggregated form of PrP in many mammalian species. Dogs exhibit resistance to prion diseases, but the mechanism behind the phenomenon remains poorly understood. Compared with human PrP and mouse PrP, dog PrP has two unique amino acid residues, Arg177 and Asp159.

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Aim: To evaluate the diagnostic value of panoramic immersion B-scan ultrasonography (Pano-immersion B-scan, PIB) in complex retinal detachment (RD), persistent hyperplastic primary vitreous (PHPV) and intraocular tumors.

Methods: The clinical data of 44 patients collected from May 2012 to December 2019 in Chinese PLA General Hospital was retrospectively studied. All of these patients underwent PIB of the eye, because it was difficult to diagnose by routine ocular fundus examination, conventional ultrasound or/and ultrasonic biomicroscope (UBM) due to opacity of refractive media, pupillary occlusion, large involvement or special location of the lesion.

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Purpose: To summarize and discuss the treatment and timing of glaucoma in patients with MICOF keratoprosthesis implantation to guide follow-up clinical treatment.

Methods: The data of 39 eyes (39 patients) with the Moscow Eye Microsurgery Complex in Russia (MICOF) keratoprosthesis implantation in our hospital from 1 January 2002 to 31 December 2017 were collected, including patients with preexisting glaucoma and those who developed glaucoma after MICOF. The sex, age, preoperative diagnosis, glaucoma surgery, keratoplasty, times of keratoplasty, best corrected visual acuity (BCVA) and final follow-up corrected visual acuity, visual field (VF) defect, and cup-to-disk ratio (CDR) were statistically analyzed.

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Acute kidney injury (AKI) refers to a group of common clinical syndromes characterized by acute renal dysfunction, which may lead to chronic kidney disease (CKD), and this process is called the AKI-CKD transition. The transcriptional coactivator YAP can promote the AKI-CKD transition by regulating the expression of profibrotic factors, and 14-3-3 protein zeta (14-3-3ζ), an important regulatory protein of YAP, may prevent the AKI-CKD transition. We established an AKI-CKD model in mice by unilateral renal ischemia-reperfusion injury and overexpressed 14-3-3ζ in mice using a fluid dynamics-based gene transfection technique.

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With the increase in bacterial resistance, new antimicrobial agents are urgently need for developing to combat multidrug-resistant pathogens and with low cytotoxicity. In this study, four new ruthenium polypyridine complexes bearing 4-tBu-phenyl sulfide Ru(bpy)(TBPIP)](PF)(Ru(Ⅱ)-1), Ru(dmb)(TBPIP)](PF)(Ru(Ⅱ)-2), Ru(dmob)(TBPIP)](PF)(Ru(Ⅱ)-3) and Ru(dtb)(TBPIP)](PF)(Ru(Ⅱ)-4) were designed, synthesized and evaluated. Those ruthenium complexes showed strong activity against Staphylococcus aureus (S.

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Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease. Misfolded Cu, Zn-superoxide dismutase (SOD1) has been linked to both familial and sporadic ALS. SOD1 fibrils formed in vitro share toxic properties with ALS inclusions.

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Group A human rotaviruses (RVAs) annually cause the deaths of 215,000 infants and young children. To understand the epidemiological characteristics and genetic evolution of RVAs, we performed sentinel surveillance on RVA prevalence in a rotavirus-surveillance network in Hubei, China. From 2013 to 2016, a total of 2007 fecal samples from hospital outpatients with acute gastroenteritis were collected from four cities of Hubei Province.

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Aim: To evaluate the accuracy of segmented measurement of axial length (AL) in high myopia filled with silicone oil by immersion B-scan ultrasonography (immersion B-scan).

Methods: From June 2016 to June 2020, a total of 67 ultra-high myopia inpatients (67 eyes) who underwent silicone oil removal combined with cataract extraction and intraocular lens (IOL) implantation were retrospectively enrolled. The preoperative axial length (AL) of 31 patients with severe cataract were segmented measured using immersion B-scan (B-scan group) and another 36 patients with mild or moderate cataract were measured using IOLMaster 500 (IOLMaster group).

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Intraneuronal neurofibrillary tangles composed of Tau aggregates have been widely accepted as an important pathological hallmark of Alzheimer's disease. Liquid-liquid phase separation (LLPS) of Tau can lead to its aggregation, and Tau aggregation can then be enhanced by zinc. However, it is unclear whether zinc modulates the formation of Tau stress granules in cells.

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Purpose: To investigate whether Ti-35Nb-2Ta-3Zr/Zn (TNTZ/Zn) composite material processed by friction stir processing has osteogenic activity.

Methods: Zn was added to the surface of TNTZ alloy by friction stir processing. The control group was TNTZ(TNTZ without FSP), the experimental groups was FSP(FSP without Zn), TNTZ/Zn-0.

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Intraneuronal neurofibrillary tangles composed of Tau aggregates have been widely accepted as an important pathological hallmark of Alzheimer's disease. A current therapeutic avenue for treating Alzheimer's disease is aimed at inhibiting Tau accumulation with small molecules such as natural flavonoids. Liquid-liquid phase separation (LLPS) of Tau can lead to its aggregation, and Tau aggregates can then be degraded by autophagy.

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Prion diseases are caused by the conformational conversion of prion protein (PrP). Forty-two different mutations were identified in human PrP, leading to genetic prion diseases with distinct clinical syndromes. Here, we report the cryo–electron microscopy structure of an amyloid fibril formed by full-length human PrP with E196K mutation, a genetic Creutzfeldt-Jakob disease–related mutation.

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Purpose: To compare the morphological and biomechanical properties of normal cornea and keratoconus at different stages.

Methods: A total of 408 patients (517 eyes) with keratoconus were included in this study. According to the Topographic Keratoconus (TKC) grading method, keratoconus was divided into stage I (TKC = 1, 130 eyes), stage II (TKC = 1-2, 2, 164 eyes), stage III (TKC = 2-3, 3, 125 eyes) and stage IV (TKC = 3-4, 4, 98 eyes).

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Background: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus-2, is a worldwide pandemic. Some COVID-19 patients develop severe acute respiratory distress syndrome and progress to respiratory failure. In such cases, extracorporeal membrane oxygenation (ECMO) treatment is a necessary life-saving procedure.

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Purpose: To report the long-term outcomes of Boston keratoprosthesis type I (B-KPro type I) implantation in the management of severe ocular surface disorders.

Methods: Retrospective case series. Patients who underwent B-KPro type I implantation at the People's Liberation Army General Hospital were enrolled between March 2011 and September 2019.

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To prepare and optimize the self-microemulsion co-loaded with tenuifolin and β-asarone(TF/ASA-SMEDDS) and evaluate its quality. The prescription compositions of TF/ASA-SMEDDS were screened by solubility test, single factor test and pseudo-tern-ary phase diagram, and the prescriptions were further optimized by Box-Behnken response surface method, with the drug loading and particle size as the evaluation indexes. Then the optimized TF/ASA-SMEDDS was evaluated for emulsified appearance, particle size, morphology and drug release in vitro.

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Aims: Interleukin-35 (IL-35), a novel anti-inflammatory cytokine, has recently been implicated in tumor development, progression, and survival. However, the relationship between serum IL-35 levels and gastric cancer (GC) is inconclusive. Here, we performed this study to clarify the role of serum level of IL-35 in GC patients.

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Objective: NUT midline carcinoma (NMC), a rare type of squamous cell carcinoma, is genetically characterised by NUT midline carcinoma family member 1 (NUTM1) gene rearrangement. NMC can arise from the lungs; however, there is no standard for the management of primary pulmonary NMC. This study aimed to confirm the clinical features and report the treatments, especially with immune checkpoint inhibitors (ICIs), and outcomes of patients with primary pulmonary NMC.

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Prion diseases are caused by the misfolding of prion protein (PrP). Misfolded PrP forms protease-resistant aggregates in vivo (PrP) that are able to template the conversion of the native form of the protein (PrP), a property shared by in vitro-produced PrP fibrils. Here we produced amyloid fibrils in vitro from recombinant, full-length human PrP (residues 23-231) and determined their structure using cryo-EM, building a model for the fibril core comprising residues 170-229.

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To prepare the herpetolide A nanosuspension lyophilized powder(HPA-NS-LP), in order to investigate its anti-hepatitis B virus(HBV) activity and the dissolution in vitro. Herpetolide A nanosuspension(HPA-NS) was prepared by ultrasonic precipitation method. The formulation and process of HPA-NS were optimized by the single factor experiment.

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Background: Great success has been made in the targeting therapy of advanced non-small cell lung cancer (NSCLC). Nowadays, next generation sequencing (NGS) is acquirable and affordable in developed area of China. Using this feasible and accurate method of detecting therapeutic genes would help to select optimal treatments to extend patients survival.

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Synopsis of recent research by authors named "Li-qiang Wang"

  • - Li-Qiang Wang's recent research focuses on the molecular structures and mechanisms underlying various diseases, particularly neurodegenerative conditions like ALS and prion diseases, exploring mutations in proteins such as SOD1 and PrP that contribute to amyloid fibril formation and disease progression.
  • - His work also addresses the clinical implications of these findings, including corneal melt post-surgery and the effectiveness of advanced imaging techniques in the diagnosis of ocular conditions, highlighting the importance of accurate assessment and innovative treatments in ophthalmology.
  • - Additionally, Wang investigates the development of novel antimicrobial agents, emphasizing the role of metal complexes in combating drug-resistant bacteria like Staphylococcus aureus, thus contributing to the field of antimicrobial resistance and public health.