Purpose: To describe a case of diffuse retinal pigment epithelium (RPE) disturbance following 23-gauge pars plana vitrectomy (PPV) with the inverted internal limiting membrane (ILM) technique and Brilliant Blue staining for a high myopic macular hole (MH).
Observations: A 53-year-old pseudophakic high myopic female was referred to the Vitreoretinal Department with a diagnosis of a full thickness myopic MH of her right eye. Her initial visual acuity was 20/40 of her right eye and 20/20 in the left eye. She underwent routine PPV with inverted ILM flap assisted by repeated brilliant blue staining. Surgery was uneventful without any intraoperative complications. MH closure was obtained within the first days. Three weeks postoperatively, the patient reported a decline in visual acuity of her right eye. Upon examination, her visual acuity decreased to 20/400. Fundus examination showed diffuse pigmentary changes with mottling at the level of the RPE, which later progressed to severe diffuse atrophy, as confirmed by fundus autofluorescence (FAF). After 12 months, visual acuity remained 20/400 with widespread areas of atrophy.
Conclusions: Uncomplicated routinary PPV assisted with Brilliant Blue, can lead to unexplained atrophy of the RPE. Possible causes include light phototoxicity, dye toxicity or both.
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http://dx.doi.org/10.1016/j.ajoc.2021.101148 | DOI Listing |
ACS Nano
January 2025
Department of Physics, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.
UV-vis spectroscopy is a workhorse in analytical chemistry that finds application in life science, organic synthesis, and energy technologies like photocatalysis. In its traditional implementation with cuvettes, it requires sample volumes in the milliliter range. Here, we show how nanofluidic scattering spectroscopy (NSS), which measures visible light scattered from a single nanochannel in a spectrally resolved way, can reduce this sample volume to the attoliter range for solute concentrations in the mM regime, which corresponds to as few as 10 probed molecules.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Chemistry, College of Basic Sciences, Yadegar-E-Imam Khomeini (RAH) Shahre Rey Branch, Islamic Azad University, Tehran, Iran.
This study presents the development and characterization of manganese ferrite (MnFeO)-based nanocomposites with graphite oxide (GO) and chitosan (CS) for efficient dye removal from textile wastewater and aqueous solution. Comprehensive characterization was performed using FT-IR, Raman, XRD, BET, SEM, DRS and Zeta potential techniques. XRD analysis confirmed the cubic spinel structure of MnFeO, with characteristic peaks at 2θ = 32, 35, 48, 53, 62, and 64°.
View Article and Find Full Text PDFJ Biol Eng
January 2025
Department of Aquatic Animals and Diseases, Faculty of Veterinary Medicine, Erciyes University, Kayseri, Türkiye.
Background: Synthesis of organic@inorganic hNFs is achieved by the coordination of organic compounds containing amine, amide, and diol groups with bivalent metals. The use of bio-extracts containing these functional groups instead of expensive organic inputs such as DNA, enzymes, and protein creates advantages in terms of cost and applicability. In this study, the application potentials (antioxidant, antibacterial, anticancer, guaiacol, anionic, and cationic dye degradation) of hybrid (organic@inorganic) nanoflowers (hNFs) synthesized with Cu and snakeskin (SSS) were proposed.
View Article and Find Full Text PDFMol Biol Res Commun
January 2025
Labolatory of Biosensors, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh city, Vietnam.
The Type V secretion system, or "autotransporter", is a secretion system that enables bacteria to directly export proteins from the cell interior to the extracellular membrane. mCherry is a second-generation monomeric red fluorescent protein that has an improvement in photostability compared to the first generation of RFP. In this research, we conducted the fusion of the mRFP into the C-terminal domain of EhaA - the translocation domain of the autotransporter protein transport system - to investigate the expression of mRFP on the surface of a model organism commonly utilized in recombinant protein research.
View Article and Find Full Text PDFJ Environ Manage
December 2024
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environment Sciences, Beijing, 100012, PR China; Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, PR China. Electronic address:
Biological acidification, efficient and low-cost biotechnology, is crucial in treating pharmaceutical, pesticide water, and petrochemical wastewater. Nitrobenzene is a typical organic pollutant in petrochemical wastewater with high toxicity and long persistence. However, its effect on hydrolysis acidification is yet to be fully elucidated.
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