119 results match your criteria: "First Affiliated Hospital of Northwest University[Affiliation]"

Daily activities change is linked to acute angle closure occurrence in COVID-19 co-infected patients.

BMC Ophthalmol

December 2024

National Clinical Research Center for Ocular Diseases, Eye Hospital, Wenzhou Medical University, Wenzhou, 3250027, China.

Objectives: To analyze the influence of daily activity-related factors associated with COVID-19 infection on the occurrence of acute angle closure (AAC).

Methods: A multicenter hospital-based study was conducted at 23 ophthalmic centers in 17 provincial-level regions across China to recruit patients with confirmed AAC during the post-lockdown time of COVID-19 (P-TOC) from Dec 7, 2022, to Jan 17, 2023, and three lockdown time of COVID-19 (TOC) periods, which included the TOC-2022 (Sep 7, 2022 - Dec 6, 2022), TOC-2021(Sep 7, 2021 - Jan 6, 2022) and TOC-2020 (Sep 7, 2020 - Jan 6, 2021). Patient information, including demographic, a questionnaire on daily activity changes during the AAC period, COVID-19 history, and eye examination results, was collected.

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Purpose: To investigate the mechanism of paclitaxel (PTX)-induced macular edema and the therapeutic effect of carbonic anhydrase inhibitors (CAI) on this condition.

Methods: The effect of PTX on cell morphology was detected by immunofluorescence. Cell barrier was measured by measuring cell resistance across the epithelium.

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Article Synopsis
  • Preeclampsia (PE) is a common pregnancy complication with unclear causes, and BMP5, a glycoprotein in the placenta, may play a crucial role in trophoblast cell function.
  • The study found that BMP5 expression and its N-glycosylation are lower in preeclamptic tissues, suggesting that changes in BMP5 may affect cell behaviors like proliferation and invasion.
  • Ultimately, the research indicates that N-glycosylated BMP5 enhances trophoblastic functions through the BMP5-SMAD1/5 signaling pathway, offering new insights for diagnosing and treating preeclampsia.
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Introduction: Despite prompt and appropriate surgical management, a considerable proportion of patients with congenital ectopia lentis (CEL) suffer from postoperative ametropic amblyopia. To predict and identify at-risk patients early, and ensure timely amblyopia treatment, we conducted a thorough investigation into the onset and progression patterns of postoperative amblyopia in patients with CEL. Moreover, an ocular prediction model was constructed for amblyopia.

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Background: The exploration of age-related clinical features and adverse outcomes of non-disabling ischemic cerebrovascular disease (NICE) has been largely unaddressed in current research. This study aimed to analyze the differences in clinical characteristics and prognostic outcomes of NICE across various age groups, utilizing data from the Xi'an Stroke Registry Study in China.

Methods: The age distribution of NICE was categorized into four groups: age ≤ 54 years, age 55-64 years, age 65-74 years, and age ≥ 75 years.

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Purpose: The abnormal growth factors-induced epithelial-mesenchymal transition (EMT) in retinal pigment epithelial (RPE) cells was known as a vital pathogenesis of proliferative vitreoretinopathy (PVR). This study aims to explore how survivin inhibition affects EMT induced by epidermal growth factor (EGF) in RPE cells.

Methods: Human primary RPE cells were identified in vitro.

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Background And Purpose: Considering the reliance of serum uric acid (SUA) levels on renal clearance function, its role in stroke outcomes remains controversial. This study investigated the association of renal function-normalized SUA (SUA to serum creatinine ratio, SUA/SCr), a novel renal function index, with the 1-year outcomes in patients with acute ischemic stroke (AIS).

Methods: This is a prospective, multicenter observational study.

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Genome-wide association analysis to search for new loci associated with stroke risk in Northwestern Chinese population.

Gene

November 2024

Department of Neurology, Xi'an No.1 Hospital, The First Affiliated Hospital of Northwest University, Xi'an 710002, China; Xi'an Key Laboratory for Innovation and Translation of Neuroimmunological Diseases, Xi'an 710002, China; College of Life Science, Northwest University, Xi'an 710069, China. Electronic address:

Background And Purpose: Genetic factors play an important role in the pathogenesis of stroke(S). This study aimed to screen the loci associated with S risk in northwestern Chinese population by genome-wide association analysis (GWAS).

Methods: A total of 1394 subjects, including 682 S patients and 692 controls, were enrolled in this study.

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A case of prolonged corneal sulfur foreign bodies and review of literature.

BMC Ophthalmol

July 2024

Department of Ophthalmology, Xi'an First Hospital, The First Affiliated Hospital of Northwest University, Xi'an, Shaanxi Province, 710002, China.

Background: This case mainly describes a relatively rare case of an old mineral-like corneal foreign body that existed for up to 20 years, and did not significantly affect the visual quality of the patient.

Case Presentation: A 56-year-old male miner complained of right eye vision loss for 3 years, swollen and painful for 4 months. Admission examination: Best corrected visual acuity was no light perception in the right eye and 20/20 in the left eye.

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Background: Carotid intima-media thickness (IMT) and diameter, stiffness, and wave reflections, are independent and important clinical biomarkers and risk predictors for cardiovascular diseases. The purpose of the present study was to establish nationwide reference values of carotid properties for healthy Chinese adults and to explore potential clinical determinants.

Methods: A total of 3053 healthy Han Chinese adults (1922 women) aged 18-79 years were enrolled at 28 collaborating tertiary centers throughout China between April 2021 and July 2022.

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Aim: To explore the effect of epidermal growth factor receptor (EGFR) inhibition by erlotinib and EGFR siRNA on epidermal growth factor (EGF)-induced activation of retinal pigment epithelium (RPE) cells.

Methods: Human RPE cell line (ARPE-19 cells) was activated by 100 ng/mL EGF. Erlotinib and EGFR siRNA were used to intervene EGF treatment.

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Aquaporin-4 antibodies (AQP4-Abs) are a diagnostic marker for patients with a demyelinating disease called neuromyelitis optica spectrum disorder (NMOSD). Anti-Argonaute antibodies (AGO-Abs) present as potential biomarkers of the overlap syndrome between NMOSD and other autoimmune diseases. In this paper, we present the case of an adult woman with numbness, tingling, and burning sensations in her arms and subsequent bilateral internuclear ophthalmoplegia.

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JOURNAL/nrgr/04.03/01300535-202503000-00033/figure1/v/2024-06-17T092413Z/r/image-tiff The organotypic retinal explant culture has been established for more than a decade and offers a range of unique advantages compared with in vivo experiments and cell cultures. However, the lack of systematic and continuous comparison between in vivo retinal development and the organotypic retinal explant culture makes this model controversial in postnatal retinal development studies.

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Aim: To explore the effects of hepatocyte growth factor (HGF) on retinal pigment epithelium (RPE) cell behaviors.

Methods: The human adult retinal pigment epithelial cell line-19 (ARPE-19) were treated by HGF or mesenchymal-epithelial transition factor (MET) inhibitor SU11274 . Cell viability was detected by a Cell Counting Kit-8 assay.

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Recombinant human collagen I/carboxymethyl chitosan hydrogel loaded with long-term released hUCMSCs derived exosomes promotes skin wound repair.

Int J Biol Macromol

April 2024

Department of Plastic and Reconstructive Surgery, Xijing Hospital, Air Force Medical University, Xi'an 710032, Shaanxi, PR China. Electronic address:

Background: Stem cell exosomes are beneficial in accelerating wound repair. However, the therapeutic function is limited due to its rapid clearance in vivo. To improve the functionality of exosomes in cutaneous wound healing, a novel hydrogel was designed and fabricated by recombinant human collagen I and carboxymethyl chitosan loaded with exosomes derived from human umbilical cord mesenchymal stem cells (hUCMSCs), named as the rhCol I/CMC-Exos hydrogel.

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Compounding engineered mesenchymal stem cell-derived exosomes: A potential rescue strategy for retinal degeneration.

Biomed Pharmacother

April 2024

Shaanxi Provincial Clinical Research Center for Ophthalmology Diseases, the First Affiliated Hospital of Northwest University, Xi'an No.1 hospital, Xi'an, Shaanxi, China; Shaanxi Key Laboratory of Ophthalmology, Shaanxi Institute of Ophthalmology, Xi'an, Shaanxi 710002, China. Electronic address:

The prevalence of retinal degenerative diseases, including age-related macular degeneration and retinitis pigmentosa, has been increasing globally and is linked to the aging population and improved life expectancy. These diseases are characterized by chronic, progressive neuronal damage or depletion of the photoreceptor cells in the retina, and limited effective treatment options are currently available. Mesenchymal stem cell-derived exosomes (MSC-EXOs) containing cytokines, growth factors, lipids, mRNA, and miRNA, which act as mediators of intercellular communication transferring bioactive molecules to recipient cells, offer an appealing, non-cellular nanotherapeutic approach for retinal degenerative diseases.

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Inherited retinal diseases (IRDs) are a group of rare genetic eye conditions that cause blindness. Despite progress in identifying genes associated with IRDs, improvements are necessary for classifying rare autosomal dominant (AD) disorders. AD diseases are highly heterogenous, with causal variants being restricted to specific amino acid changes within certain protein domains, making AD conditions difficult to classify.

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This research delves into the effectiveness of Ginkgolide B (GB), a compound from Ginkgo biloba, in combating cell death caused by glaucoma, with a focus on mitochondrial impairment and the mitochondrial permeability transition pore (mPTP). Utilizing models of high intraocular pressure and in vitro glaucoma simulations, the study investigates GB's impact on retinal progenitor cells (RPCs) under oxygen-glucose deprivation/reperfusion (OGD/R) and in a rat glaucoma model. The study methodologies included apoptosis assessment, apoptotic marker analysis via Western blot, and mitochondrial structure and function evaluation.

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The role of ApoE in fatty acid transport from neurons to astrocytes under ischemia/hypoxia conditions.

Mol Biol Rep

February 2024

Department of Central Laboratory, Xi'an No. 1 Hospital, The First Affiliated Hospital of Northwest University, No. 30, South Street, Beilin District, Xi'an, 710002, Shaanxi, China.

Article Synopsis
  • This study looked at how a lack of oxygen can affect fat movement in the brain, specifically from nerve cells (neurons) to support cells (astrocytes).
  • Researchers found that when the brain was deprived of oxygen, certain fats built up and a protein called ApoE became more active.
  • Different types of ApoE (like ApoE2, ApoE3, and ApoE4) affected how well these fats moved, with ApoE4 being less helpful, which might lead to new treatments for brain damage in babies.
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PD protects Müller cells through the SIRT1/NLRP3 inflammasome pathway.

Int Ophthalmol

February 2024

Department of Ophthalmology, Xi'an No. 1 Hospital, The First Affiliated Hospital of Northwest University, No.12, Yanta West Road, Yanta District, Xi'an City, 710006, Shaanxi Province, China.

Purpose: Polydatin (PD) has widely pharmacological activities. However, the effects of PD on high glucose (HG)-induced Müller cells in diabetic retinopathy (DR) are rarely studied.

Methods: The protective effects of PD were evaluated in HG-induced human retinal Müller cells.

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We aimed to investigate the neuroprotective effect of rutin on retinal ganglion cells (RGCs) under ischemia-reperfusion (I/R) conditions and the underlying mechanisms involving microglia polarization and JAK/STAT3 signaling. RGCs isolated from C57/Bl6 mice were co-cultured with BV2 microglial cells under normal or in vitro oxygen-glucose deprivation and reoxygenation (OGD/R) conditions. Rutin's effects were evaluated by assessing cell viability, apoptosis rates, cytokine levels, microglial polarization markers and JAK/STAT3 phosphorylation levels.

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Rationale: Ornidazole is a synthetic nitroimidazole derivative that is commonly prescribed for antiparasitic or anti-anaerobic infections. It is generally well tolerated, with known side effects including gastrointestinal tract, anaphylaxis, and central nervous system reactions. Ornidazole-induced binocular reactive keratitis and several mucocutaneous lesions have been rarely reported.

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Purpose: To describe a stromal lenticule rotation surgical technique to correct mixed astigmatism and evaluate the initial clinical outcomes of this innovative approach.

Methods: This retrospective case series included five eyes from five patients with mixed astigmatism that underwent intrastromal lenticule rotation surgery. The eyes were evaluated for uncorrected visual acuity, corrected distance visual acuity, manifest refraction, central corneal thickness, corneal volume, anterior and posterior K readings, and corneal higher order aberrations (HOAs) (including total HOAs, spherical aberrations, coma, and trefoil) using the Scheimpflug-Placido topographer before and 3 months after surgery.

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