Article
Ophthalmology
Marina Yasvoina, Qian Yang, Sasha M. Woods, Tjebo Heeren, Grant M. Comer, Catherine A. Egan, Marcus Fruttiger
Summary: This study found that RPE cells invading the retina in retinal degenerative diseases undergo dedifferentiation and can be pigmented or unpigmented. As a result, the number of these cells may be underestimated through funduscopy.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Geetika Kaur, Nikhlesh K. Singh
Summary: Retinal neurodegeneration, commonly manifested as apoptosis or impaired function of photoreceptors, is a major cause of irreversible vision loss and blindness. This review summarizes the extensive research conducted on the pathogenesis and treatment of retinal degenerative diseases, including age-related macular degeneration, inherited retinal dystrophies, retinitis pigmentosa, Stargardt macular dystrophy, and Leber congenital amaurosis. The role of inflammation in retinal degeneration is highlighted, and various therapeutic approaches, such as gene therapy and stem cell-based therapies, are evaluated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Oncology
Alev Ozcelik-Kose, Osman Cekic, Cevdet Kaya
Summary: This study evaluated the association between the administration of oral fluoroquinolone and the onset of acute retinal degeneration. Preliminary results of this study showed that use of oral fluoroquinolone had no detectable impact on retinal degeneration at acute phase.
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2022)
Article
Ophthalmology
Jianyang Xie, Quanyong Yi, Yufei Wu, Yalin Zheng, Yonghuai Liu, Antonella Macerollo, Huazhu Fu, Yanwu Xu, Jiong Zhang, Ardhendu Behera, Chenlei Fan, Alejandro F. Frangi, Jiang Liu, Qinkang Lu, Hong Qi, Yitian Zhao
Summary: This study developed a standardized OCTA analysis framework for retinal microvascular assessment and compared the parameters extracted from OCTA images between controls, Alzheimer’s Disease (AD), and mild cognitive impairment (MCI) groups. The results showed significant reductions in vessel area, length densities, and bifurcation numbers in AD group compared to controls. The MCI group demonstrated decreases in vascular parameters, fractal dimension, and bifurcation numbers in both superficial and inner vascular complexes, as well as increased vascular tortuosity and roundness of foveal avascular zone (FAZ). The study suggests that OCTA can be a useful tool for the diagnosis of AD and MCI.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Tess A. V. Afanasyeva, Julio C. Corral-Serrano, Alejandro Garanto, Ronald Roepman, Michael E. Cheetham, Rob W. J. Collin
Summary: In the era of personalized medicine, induced pluripotent stem cells (iPSCs) have emerged as a valuable system for cell replacement and modeling of inherited retinal diseases (IRDs). Three-dimensional iPSCs-derived retinal organoids containing various retinal cell types show promise for advancing research and treatments for IRDs.
CELLULAR AND MOLECULAR LIFE SCIENCES
(2021)
Article
Ophthalmology
Xue-Jiao Chen, Chang-Jun Zhang, Ya-Han Wang, Zi-Bing Jin
Summary: Silencing and overexpression of Ago2 in mouse retina both resulted in significant morphological alterations and severe impairment of retinal function, accompanied by changes in noncoding RNAs. Ago2 disruption led to severe retinal degeneration, indicating its important role in maintaining retinal structural and functional homeostasis.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Review
Cell Biology
Amit Chatterjee, Ruchira Singh
Summary: Extracellular vesicles (EVs) are secreted membrane vesicles that come in various sizes, including exosomes (-30-200 nm) and microvesicles (MVs) that are around 100-1,000 nm in size. These EVs have been found to play a crucial role in autocrine, paracrine, and endocrine signaling, and are associated with a range of human disorders, including retinal degenerative diseases such as age related macular degeneration (AMD) and diabetic retinopathy (DR). In this review, the authors provide an overview of the current understanding of the role of EVs in retinal physiology and specifically focus on how disease-related changes in EVs can impact specific retinal diseases. Additionally, they discuss the potential of EVs in diagnostic and therapeutic strategies for targeting retinal diseases.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2023)
Article
Neurosciences
Aiwen Xu, Michael Beyeler
Summary: This study used a biophysical model to simulate the retina and investigated the impact of neuroanatomical changes on cellular responses during retinal degeneration. The findings revealed that retinal cell activity increased and electrical stimulation thresholds also increased during retinal degeneration, and testable predictions about the underlying neuroanatomical mechanisms were proposed.
FRONTIERS IN NEUROSCIENCE
(2023)
Review
Ophthalmology
Malena Daich Varela, Thales Antonio Cabral de Guimaraes, Michalis Georgiou, Michel Michaelides
Summary: Current research focuses on genetic therapies for Leber congenital amaurosis (LCA) and various clinical trials are ongoing globally to achieve better outcomes. Gene therapy, cell therapy, and pharmacological approaches show potential for the treatment of LCA, with advancements in techniques like CRISPR-mediated gene editing and antisense oligonucleotides providing new possibilities.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2022)
Article
Neurosciences
Salma Ferdous, Debresha A. Shelton, Tatiana E. Getz, Micah A. Chrenek, Nancy L'Hernault, Jana T. Sellers, Vivian R. Summers, P. Michael Iuvone, Jeremy M. Boss, Jeffrey H. Boatright, John M. Nickerson
Summary: This study investigated the role of Lysine specific demethylase 1 (Lsd1) in murine retinal development. The researchers found that in adult Chx10-Cre Lsd1(fl/fl) mice, both the retinal function and morphology were impaired. However, no obvious functional or morphological defects were observed in adult Rho-iCre75 Lsd1(fl/fl) animals.
FRONTIERS IN CELLULAR NEUROSCIENCE
(2023)
Article
Ophthalmology
Jennifer Lopez, Mark Borchert, Thomas C. Lee, Aaron Nagiel
Summary: This study reports the occurrence of subretinal deposits in three young patients following gene therapy for retinal dystrophy. However, these deposits improved or resolved over the follow-up period. These findings can provide insights into the delivery parameters and safety profile of future retinal gene therapy trials.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Ophthalmology
Felix Friedrich Reichel, Immanuel Seitz, Fabian Wozar, Spyridon Dimopoulos, Ronja Jung, Melanie Kempf, Susanne Kohl, Friederike Charlotte Kortum, Saskia Ott, Lisa Pohl, Krunoslav Stingl, Karl Ulrich Bartz-Schmidt, Katarina Stingl, M. Dominik Fischer
Summary: This study evaluated the development of retinal atrophy in patients treated with Voretigene neparvovec (VN) gene therapy. It was found that retinal atrophy occurred in all eyes, primarily within the detached area. Fundus autofluorescence was identified as an important tool for monitoring atrophic changes in these patients. Interestingly, the functional outcomes of the treatment remained stable despite the presence of atrophy in central areas.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Neurosciences
Paul-Alexandre Dechelle-Marquet, Xavier Guillonneau, Florian Sennlaub, Cecile Delarasse
Summary: This article discusses the potential involvement of P2X7 in the development of AMD and uveitis, as a sensor for high concentrations of released ATP, and its participation in various physiological and pathological processes.
Article
Environmental Sciences
Lirui Hou, Yuhan Fu, Chong Zhao, Lihong Fan, Hongbo Hu, Shutao Yin
Summary: This article investigates the reproductive toxicity of veterinary antibiotics ciprofloxacin (CIP) and enrofloxacin (ENR) in male zebrafish and mice. The study shows that CIP decreases the weight and damages the tissue of spermatogonia in male zebrafish, as well as affects the expression of reproductive hormones. ENR inhibits cell proliferation and causes cell cycle arrest in mouse Leydig and Sertoli cells, and it also affects the development of the testes in adolescent mice.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Ophthalmology
Jasleen Kaur Jolly, Moreno Menghini, Piers A. Johal, Thomas M. W. Buckley, Holly Bridge, Robert E. Maclaren
Summary: The study revealed alterations in inner retinal layers associated with photoreceptor disease, impacting microperimetry thresholds. Photoreceptor layer thickness and inner retinal thickness were found to be correlated with microperimetry threshold measurements.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2022)