Importance: Optical coherence tomography software classifies abnormality of macular ganglion cell-inner plexiform layer thickness and macular retinal nerve fibre layer thickness based on adult series.
Background: We assessed the impact of using paediatric reference macular ganglion cell complex values instead of adult reference values.
Design: Cross-sectional study. Primary and tertiary health-care setting.
Participants: Out of 140 healthy participants aged 5 to 18 years, 90% were eligible.
Methods: Following a dilated eye examination and cycloplegic refraction, participants underwent optical coherence tomography ganglion cell scans (Topcon 3D OCT-2000; Topcon Corporation, Tokyo, Japan). Right eye measurements for superior, inferior, and total layer thickness and spherical equivalent were reported, together with age, sex and origin.
Main Outcome Measures: Paediatric reference values by age and spherical equivalent were produced, and the specific agreement between paediatric and adult ganglion cell complex reference values below or equal to percentile 5 was estimated.
Results: The multivariate analysis confirmed a positive association between spherical equivalent and macular ganglion cell-inner plexiform layer thickness, and between age and macular retinal nerve fibre layer (five out of six regression coefficients P values were ≤ 0.03). Specific agreement was 25% for ganglion cell-inner plexiform layer thickness and > 80% for macular retinal nerve fibre layer. Adult-based software identified low ganglion cell values in one in seven children compared to paediatric reference values (0.8% vs 5.5%, P = 0.031).
Conclusions And Relevance: The availability of optical coherence tomography ganglion cell complex reference values for paediatric age and spherical equivalent groups can be used to improve detection of children with low cell layer thickness.
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http://dx.doi.org/10.1111/ceo.13418 | DOI Listing |
Unlabelled: Chronic back pain (CBP) is the leading cause of disability affecting 1 in 10 people worldwide. Symptoms are marked by persistent lower back pain, reduced mobility, and heightened cold sensitivity. Here, we utilize a mouse model of CBP induced by injecting urokinase-type plasminogen activator (uPA), a proinflammatory agent in the fibrinolytic pathway, between the L2/L3 lumbar vertebrae.
View Article and Find Full Text PDFNeurons use cell-adhesion molecules (CAMs) to interact with other neurons and the extracellular environment: the combination of CAMs specifies migration patterns, neuronal morphologies, and synaptic connections across diverse neuron types. Yet little is known regarding the intracellular signaling cascade mediating the CAM recognitions at the cell surface across different neuron types. In this study, we investigated the neural developmental role of Afadin , a cytosolic adapter protein that connects multiple CAM families to intracellular F-actin.
View Article and Find Full Text PDFDiverse retinal ganglion cells (RGCs) transmit distinct visual features from the eye to the brain. Recent studies have categorized RGCs into 45 types in mice based on transcriptomic profiles, showing strong alignment with morphological and electrophysiological properties. However, little is known about how these types are spatially arranged on the two-dimensional retinal surface-an organization that influences visual encoding-and how their local microenvironments impact development and neurodegenerative responses.
View Article and Find Full Text PDFActa Neuropathol Commun
January 2025
Ophthalmology, Novartis Biomedical Research, Cambridge, MA, USA.
Neurodegeneration in glaucoma patients is clinically identified through longitudinal assessment of structure-function changes, including intraocular pressure, cup-to-disc ratios from fundus images, and optical coherence tomography imaging of the retinal nerve fiber layer. Use of human post-mortem ocular tissue for basic research is rising in the glaucoma field, yet there are challenges in assessing disease stage and severity, since tissue donations with informed consent are often unaccompanied by detailed pre-mortem clinical information. Further, the interpretation of disease severity based solely on anatomical and morphological assessments by histology can be affected by differences in death-to-preservation time and tissue processing.
View Article and Find Full Text PDFJ Control Release
January 2025
Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Institute of Urology, Beijing Municipal Health Commission, Beijing 100050, China. Electronic address:
We previously established an effective method to ameliorate erectile dysfunction (ED) using intracavernous injection (ICI) of mesenchymal stem cell (MSC) microspheres. However, the expression of a key neurotrophic factor, brain-derived neurotrophic factor (BDNF), was low in both MSCs and MSC microspheres, restricting the associated neural repair. Based on the hypoxia and oxidative stress microenvironments within cell spheroids and lesion areas, BDNF-expressing nanocomplexes that are dual-responsive to hypoxia and reactive oxygen species were designed to modify MSCs, achieving high BDNF expression in MSC spheroids.
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