2,471 results match your criteria alkali burn

Protective roles of the TIR/BB-loop mimetic AS-1 in alkali-induced corneal neovascularization by inhibiting ERK phosphorylation.

Exp Eye Res 2021 Apr 8:108568. Epub 2021 Apr 8.

Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu, 214023, People's Republic of China.

Hydrocinnamoyl-L-valylpyrrolidine (AS-1), a synthetic low-molecule mimetic of myeloid differentiation primary response gene 88 (MyD88), inhibits inflammation by disrupting the interaction between the interleukin-1 receptor (IL-1R) and MyD88. Here, we describe the effects of AS-1 on injury-induced increases in inflammation and neovascularization in mouse corneas. Mice were administered a subconjunctival injection of 8 μL AS-1 diluent before or after corneal alkali burn, followed by evaluation of corneal resurfacing and corneal neovascularization (CNV) by slit-lamp biomicroscopy and clinical assessment. Read More

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Comparison of therapeutic effects between topical 8-oxo-2'-deoxyguanosine and corticosteroid in ocular alkali burn model.

Sci Rep 2021 Mar 25;11(1):6909. Epub 2021 Mar 25.

Gachon Pain Center and Department of Physiology, Gachon University College of Medicine, Incheon, 21999, Korea.

We compared the therapeutic effects of topical 8-oxo-2'-deoxyguanosine (8-oxo-dG) and corticosteroid in a murine ocular alkali burn model. (n = 128) The corneal alkali burn model was established by applying 0.1 N sodium hydroxide (NaOH), followed by treatment with 8-oxo-dG, 0. Read More

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Evaluation of Clinical and Histological Outcomes of Adipose-Derived Mesenchymal Stem Cells in a Rabbit Corneal Alkali Burn Model.

Stem Cells Int 2021 7;2021:6610023. Epub 2021 Mar 7.

Laboratory of Experimental Ophthalmology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.

To assess effects of adipose-derived mesenchymal stem cells (AMSCs) in corneal alkali injuries in an experimental animal model. Twenty white New Zealand rabbits were included in the study. The animal models were randomly divided into 2 groups. Read More

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Effect of mesenchymal stromal cells encapsulated within polyethylene glycol-collagen hydrogels formed in situ on alkali-burned corneas in an ex vivo organ culture model.

Cytotherapy 2021 Mar 19. Epub 2021 Mar 19.

Department of Ophthalmology, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA; Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, South Korea; VA Palo Alto HealthCare System, Palo Alto, California, USA. Electronic address:

Background Aims: Corneal inflammation after alkali burns often results in vision loss due to corneal opacification and neovascularization. Mesenchymal stem cells (MSCs) and their secreted factors (secretome) have been studied for their anti-inflammatory and anti-angiogenic properties with encouraging results. However, topical instillation of MSCs or their secretome is often accompanied by issues related to delivery or rapid washout. Read More

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[Human Health Risk Assessment of Phenol in Poyang Lake Basin].

Huan Jing Ke Xue 2021 Mar;42(3):1354-1360

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.

Phenol is widely used in the production of insulation and thermal insulation materials, adhesives, perfumes, coatings for food containers, paints, and pharmaceutical production, and is also widely detected in the aquatic environment. Long-term exposure to phenol can elicit adverse effects, such as skin burn, liver and central system damage. Here, phenol concentrations in the water and aquatic products of Poyang Lake were investigated. Read More

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PLGA nanoparticles containing Lingzhi extracts rescue corneal epithelial cells from oxidative damage.

Exp Eye Res 2021 Mar 17;206:108539. Epub 2021 Mar 17.

Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan. Electronic address:

Oxidative stress-related ocular surface epithelial damage can be initiated by ambient oxygen, UV radiation, and chemical burns. The oxidative damage to cornea can lead to inflammation and even vision loss. Lingzhi (Ganoderma lucidum) is a Chinese herbal drug and has been shown to prevent chronic diseases in clinical practices and has been proven to possess anti-oxidative and anti-inflammatory properties. Read More

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Cordycepin prevents the esophageal stricture formation in the alkali-burn rat model by exerting anti-inflammatory and antifibrotic effects.

Acta Cir Bras 2021 15;36(3):e360302. Epub 2021 Mar 15.

MD, Associate Professor. University of Health Sciences - Istanbul Bagcilar Training and Research Hospital - Department of General Surgery - Istanbul, Turkey.

Purpose: To investigate the efficacy of cordycepin, an adenosine analogue, on prevention of esophageal damage and stricture formation due to esophageal caustic burns in rat model comparing with prednisolone.

Methods: Caustic esophageal burn was introduced by 37.5% of NaOH to distal esophagus. Read More

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HDL nanoparticles have wound healing and anti-inflammatory properties and can topically deliver miRNAs.

Adv Ther (Weinh) 2020 Dec 30;3(12). Epub 2020 Sep 30.

Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL.

microRNAs regulate numerous biological processes, making them potential therapeutic agents. Problems with delivery and stability of these molecules have limited their usefulness as treatments. We demonstrate that synthetic high-density lipoprotein nanoparticles (HDL NPs) topically applied to the intact ocular surface are taken up by epithelial and stromal cells. Read More

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December 2020

Long term observation of ocular surface alkali burn in rabbit models: Quantitative analysis of corneal haze, vascularity and self-recovery.

Exp Eye Res 2021 Apr 2;205:108526. Epub 2021 Mar 2.

Stem Cell Laboratory, Prof. Brien Holden Eye Research Center, L V Prasad Eye Institute, Hyderabad, Telangana, India; Center for Ocular Regeneration (CORE), LV Prasad Eye Institute, Hyderabad, Telangana, India. Electronic address:

Limbal Stem Cell Deficiency (LSCD), caused due to corneal injury, primarily by chemical/alkali burns, leads to compromised vision. Recently, several animal models of corneal alkali burn injury have become available. The majority of the studies with these animal models start interventions soon after the injury. Read More

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Effects of Selective Peroxisome Proliferator Activated Receptor Agonists on Corneal Epithelial Wound Healing.

Pharmaceuticals (Basel) 2021 Jan 25;14(2). Epub 2021 Jan 25.

Department of Ophthalmology, Nippon Medical School, Bunkyo-ku, Tokyo 113-8603, Japan.

The effects of each subtype-selective peroxisome proliferator activated receptor (PPAR) agonist (α, β/δ, γ) on corneal epithelial wound healing were investigated using a rat corneal alkali burn model. After the alkali burn, each PPAR agonist or vehicle ophthalmic solution was instilled topically onto the rat's cornea. Corneal epithelial healing processes were evaluated by fluorescein staining. Read More

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January 2021

Long-term Impact of Gold and Platinum on Microbial Diversity in Australian Soils.

Microb Ecol 2021 Jan 6. Epub 2021 Jan 6.

School of Science, RMIT University, PO Box 71, Bundoora, Victoria, 3083, Australia.

The effects of platinum (Pt) and gold (Au) and on the soil bacterial community was evaluated in four different Australian soil types (acidic Burn Grounds (BGR), organic matter-rich Fox Lane, high silt/metal Pinpinio (PPN), and alkali Minnipa (MNP) spiked with either Pt or Au at 1, 25, and 100 mg kg using a next-generation sequencing approach (amplicon-based, MiSeq). Soil type and metal concentrations were observed to be key drivers of Pt and Au effects on soil microbial community structure. Different trends were therefore observed in the response of the bacterial community to Pt and Au amendments; however in each soil type, Pt and Au amendment caused a detectable shift in community structure that in most samples was positively correlated with increasing metal concentrations. Read More

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January 2021

Rapamycin ameliorates corneal injury after alkali burn through methylation modification in mouse TSC1 and mTOR genes.

Exp Eye Res 2021 02 23;203:108399. Epub 2020 Dec 23.

School of Life Sciences, Lanzhou University, Lanzhou, 730000, China. Electronic address:

Alkali burn to the cornea is one of the most intractable injuries to the eye due to the opacity resulting from neovascularization (NV) and fibrosis. Numerous studies have focused on studying the effect of drugs on alkali-induced corneal injury in mouse, but fewer on the involvement of alkali-induced DNA methylation and the PI3K/AKT/mTOR signaling pathway in the mechanism of alkali-induced corneal injury. Thus, the aim of this study was to determine the involvement of DNA methyltransferase 3 B-madiated DNA methylation and PI3K/AKT/mTOR signaling modulation in the mechanism of alkali-induced corneal injury in a mouse model. Read More

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February 2021

Heparin-Modified Amniotic Membrane Combined With Growth Factors for Promoting Corneal Wound Healing After Alkali Burn.

Front Bioeng Biotechnol 2020 23;8:599800. Epub 2020 Nov 23.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.

Ocular chemical burns are potentially blinding ocular injuries and require urgent management. Amniotic membrane (AM) transplantation is an effective surgical treatment, one of the reasons is because AM is a rich source of growth factors that can promote epithelialization and wound healing. However, growth factors will be gradually lost and insufficient after preparation process and long-time storage, leading to unsatisfactory therapeutic effects. Read More

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November 2020

Subconjunctival Injection of Regulatory T Cells Potentiates Corneal Healing Via Orchestrating Inflammation and Tissue Repair After Acute Alkali Burn.

Invest Ophthalmol Vis Sci 2020 Dec;61(14):22

Department of Ophthalmology, Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China.

Purpose: This study aimed to investigate the therapeutic effects and underlying mechanisms of locally delivered regulatory T cells (Tregs) on acute corneal wound healing after alkali burn.

Methods: After corneal alkali burn, the mice were injected subconjunctivally with regulatory T cells (Tregs) isolated from syngeneic mice. The wound healing process was monitored by clinical manifestation, flow cytometry, and enzyme-linked immunosorbent assay (ELISA). Read More

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December 2020

Amniotic membrane transplant in acute ocular surface burns in Western India: A tertiary eye care center study.

Indian J Ophthalmol 2021 01;69(1):58-64

Cornea Department, M and J Institute of Ophthalmology (Government Eye Hospital), B.J. Medical College, Ahmedabad, Gujarat, India.

Purpose: To evaluate the outcomes of early amniotic membrane transplant (AMT) in acute ocular surface burns using Dua's classification.

Methods: In this retrospective analysis conducted at a tertiary eye care center in Western India. We included 27 eyes of 24 patients from May 2014 to May 2019 who underwent AMT within 2 weeks post insult along with medical treatment for acute ocular surface burns using Dua's classification for grading on presentation. Read More

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January 2021

[Where there´s smoke - there´s no fire? - Burns from E-Cigarette explosions].

Handchir Mikrochir Plast Chir 2020 Dec 8;52(6):483-489. Epub 2020 Dec 8.

Kliniken der Stadt Köln gGmbH, Krankenhaus Köln Merheim, Abteilung für Plastische Chirurgie, Handchirurgie und Schwerbrandverletztenzentrum.

Introduction: The popularity of E-Cigarettes is increasing. Besides addiction and pulmonary health damage, reports of burn injuries from e-cigarette explosions are also increasing. Mostly, explosions of e-cigarettes are attributed to its lithium-ion battery. Read More

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December 2020

Potential therapeutic effects of ethyl pyruvate and N-acetyl cysteine in an experimental rat model of corrosive esophageal.

Arab J Gastroenterol 2020 Dec 3;21(4):260-266. Epub 2020 Dec 3.

Karadeniz Technical University, Faculty of Medicine, Department of Emergency Medicine, Trabzon, Turkey.

Background And Study Aims: Esophageal burns due to ingestion of corrosive substances are frequently seen in both children and adults. However, there is no standard method of treatment to prevent associated mortality and morbidity. Therefore, this study aimed to evaluate the effects of known antioxidants, namely N-acetyl cysteine and ethyl pyruvate, on esophageal damage due to sodium hydroxide-induced corrosive burns. Read More

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December 2020

Alkali Burn Over a LASIK Flap.

Cornea 2020 Dec 3. Epub 2020 Dec 3.

Department of Ophthalmology, Mayo Clinic, Rochester, MN.

Purpose: To describe the management and outcome of an ocular surface alkali burn in the setting of previous laser in situ keratomileusis (LASIK).

Methods: This is a case report and review of relevant literature.

Results: A 25-year-old man with a history of LASIK presented 4 weeks after a sodium hydroxide splash to his left eye with visual acuity of 20/60 and a nonhealing epithelial defect adjacent to sectoral inferior limbal ischemia in the setting of trichiasis from upper eyelid cicatricial entropion. Read More

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December 2020

Numerical Simulation of NO Emission Characteristics of a Cyclone Boiler with Slag-Tap Furnace.

ACS Omega 2020 Nov 12;5(46):29978-29987. Epub 2020 Nov 12.

Xi'an Thermal Power Research Institute Co., Ltd, Xi'an 710054, China.

In order to optimize the parameters of boilers and realize the burning of pure, high-alkali coal, the velocity field, temperature field, and component distribution characteristics of a new cyclone boiler with slag-tap furnace were numerically studied using ANSYS software. The influence law of the over-fire air rate on the NO emission of the cyclone boiler with slag-tap furnace was established, and the optimal over-fire air rate was determined. The renormalization-group -ε double equation model was used to simulate the gas phase flow, the discrete phase model was used to compute the gas-solid two-phase flow, and the high-alkali coal combustion model was revised based on experimental data. Read More

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November 2020

Subconjunctival injection of tumor necrosis factor-α pre-stimulated bone marrow-derived mesenchymal stem cells enhances anti-inflammation and anti-fibrosis in ocular alkali burns.

Graefes Arch Clin Exp Ophthalmol 2021 Apr 25;259(4):929-940. Epub 2020 Nov 25.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, 510060, China.

Purpose: To investigate the therapeutic effect of subconjunctival injection of tumor necrosis factor-α (TNF-α) pre-stimulated bone marrow-derived mesenchymal stem cells (BMMSCs) on ocular alkali burns in a rat model.

Methods: After applying a 6 mm filter paper soaking in 1 N NaOH on the cornea of rats, the suspension of TNF-α pre-stimulated BMMSCs, BMMSCs and PBS were given subconjunctivally and respectively. Corneal epithelial defect, corneal opacity, inflammation as well as PTGS2 and TSG-6 expression on day 7 and fibrosis on day 14 were compared. Read More

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CoVaccine HT™ Adjuvant Potentiates Robust Immune Responses to Recombinant SARS-CoV-2 Spike S1 Immunization.

Front Immunol 2020 30;11:599587. Epub 2020 Oct 30.

Department of Tropical Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI, United States.

The current COVID-19 pandemic has claimed hundreds of thousands of lives and its causative agent, SARS-CoV-2, has infected millions, globally. The highly contagious nature of this respiratory virus has spurred massive global efforts to develop vaccines at record speeds. In addition to enhanced immunogen delivery, adjuvants may greatly impact protective efficacy of a SARS-CoV-2 vaccine. Read More

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December 2020

Acetylsalicylic Acid Promotes Corneal Epithelium Migration by Regulating Neutrophil Extracellular Traps in Alkali Burn.

Front Immunol 2020 15;11:551057. Epub 2020 Oct 15.

Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.

Neutrophils are the first cells to migrate into the cornea in response to alkali burns, and excessive neutrophil infiltration is associated with inflammatory injury and a poorer prognosis. In an effort to understand the mechanisms underlying the inflammation mediated by neutrophils after alkali burns, we examined the role of alkali-activated neutrophils on human corneal epithelial cells (HCEs) proliferation and migration, as well as the effects of acetylsalicylic acid (ASA) and dexamethasone (DXM) on NETosis. We stimulated human neutrophils with sodium hydroxide (NaOH) and observed dose- and time-dependent neutrophil extracellular traps (NETs) formation. Read More

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October 2020

Gelatin methacryloyl hydrogel eye pad loaded with amniotic extract prevents symblepharon in rabbit eyes.

Eur Rev Med Pharmacol Sci 2020 10;24(19):10134-10142

Eye Hospital, Nanjing Medical University, Nanjing, China.

Objective: The aim was to evaluate the ability of gelatin methacryloyl (GelMA) hydrogel eye pads loaded with amniotic extract to prevent symblepharon in rabbits.

Materials And Methods: Forty-eight rabbits were divided into 3 groups. After ocular alkali burn, Group A (n=16) was treated with amniotic extract-loaded hydrogel eye pads placed in the conjunctival sac, Group B (n=16) was treated with amniotic membrane transplantation, and Group C (n=16) received no treatment. Read More

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October 2020

Wound Healing After Alkali Burn Injury of the Cornea Involves Nox4-Type NADPH Oxidase.

Invest Ophthalmol Vis Sci 2020 Oct;61(12):20

Centre for Eye Research Australia, University of Melbourne, East Melbourne, Victoria, Australia.

Purpose: Corneal injury that occurs after burning with alkali initiates wound-healing processes, including inflammation, neovascularization, and fibrosis. Excessive reactions to injury can reduce corneal transparency and thereby compromise vision. The NADPH oxidase (Nox) enzyme complex is known to be involved in cell signaling for wound-healing angiogenesis, but its role in corneal neovascularization has been little studied. Read More

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October 2020

Efficacy of systemic administration of riboflavin on a rabbit model of corneal alkali burn.

Sci Rep 2020 10 14;10(1):17278. Epub 2020 Oct 14.

Institute of Environmental Engineering and Biotechnology, University of Opole, Kominka 6 A, Opole, Poland.

Changes in the barrier mechanisms in the eye should determine the rational route for the administration and dosage of each drug in the treatment of traumatic injuries and other pathologies. The aim of this study was to examine the efficacy of intra-arterial delivery of C-riboflavin (as an "indicator") and compare it with intravenous and intramuscular administration in an animal model of chemical eye burn. C-riboflavin (C-I) was administered by intra-arterial (carotid artery), intravenous (femoral vein) and intramuscular (femoral muscle) routes. Read More

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October 2020

Moxifloxacin based axially swept wide-field fluorescence microscopy for high-speed imaging of conjunctival goblet cells.

Biomed Opt Express 2020 Sep 6;11(9):4890-4900. Epub 2020 Aug 6.

Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea.

Goblet cells (GCs) in the conjunctiva are specialized epithelial cells producing mucins on the ocular surface. GCs play important roles in maintaining homeostasis of the ocular surface, and GC dysfunction is associated with various complications including dry eye diseases. Current GC examination methods, which are conjunctival impression cytology and confocal reflection microscopy, have limitations for routine examination. Read More

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September 2020

DCZ3301, an aryl-guanidino agent, inhibits ocular neovascularization via PI3K/AKT and ERK1/2 signaling pathways.

Exp Eye Res 2020 12 26;201:108267. Epub 2020 Sep 26.

Eye Institute, Eye & ENT Hospital, Shanghai Medical College, Fudan University, NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, And Shanghai Key Laboratory of Visual Impairment and Restoration (Fudan University), Shanghai, China. Electronic address:

Neovascularization is a critical process in the pathophysiology of neovascular eye diseases. Although anti-VEGF therapy has achieved remarkable curative effects, complications, limited efficacy and drug resistance remain the prominent problems. DCZ3301, an aryl-guanidino compound, was reported to have anti-tumor activity in the previous studies. Read More

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December 2020

Conjunctival limbal autografting (CLAU) combined with customised simple limbal epithelial transplantation (SLET) in a severe corneal chemical burn: Case report.

Am J Ophthalmol Case Rep 2020 Dec 28;20:100906. Epub 2020 Aug 28.

Department of Ophthalmology, Adolphe de Rothschild Foundation, Paris, France.

Purpose: The most common cause of severe limbal stem cell deficiency (LSCD) is chemical injury. We report a case of severe unilateral alkali injury complicated by total LSCD, treated with customized Simple limbal epithelial transplantation (SLET) combined with conjunctival-limbal autografting (CLAU).

Observation: A 23-year-old female sustained a severe unilateral alkali chemical injury, resulting in total LSCD, treated with customized SLET combined with CLAU. Read More

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December 2020

Management Strategies of Ocular Chemical Burns: Current Perspectives.

Clin Ophthalmol 2020 15;14:2687-2699. Epub 2020 Sep 15.

Ocular Trauma and Emergency Department, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Ocular chemical burns are absolute ophthalmic emergencies and require immediate management to minimize devastating sequelae. Management of alkali and acid burns is started at the scene of the accident by copious irrigation. Treatment is directed at improving epithelial integrity and stromal stability, reduction of undue inflammation, and prevention or timely management of complications. Read More

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September 2020