- Research Article
- 10.1016/j.exer.2025.110349
Assessing structure - Function relationships in non-neovascular age-related macular degeneration.
- Jun 01, 2025
- Experimental eye research
- Emily Y Chew + 16 more +16
Publications from 2021 to 2026
Showing 10 of 28 papers
Assessing structure - Function relationships in non-neovascular age-related macular degeneration.
Colour sorting ROS-based robot evaluation under different lights and camera angles
Automated colour sorting, aided by mobile robots, is widely prevalent in the current manufacturing industry. Obstacles, such as fluctuating light conditions and camera angles, frequently hinder this procedure. Creating a colour sorting robot is a complex and time-consuming task, especially due to the vulnerability of the RGB colour space to detection errors in extreme brightness or darkness. In response to these concerns, we introduce a mobile robot that operates on the robot operating system (ROS) platform and incorporates OpenCV. This robot employs the hue, saturation, and value (HSV) colour space model for its image processing capabilities in recognising the colours and Welzl’s algorithm for the ball’s diameter estimation. The robot’s performance was assessed across various luminous fluxes and camera tilt angles. It demonstrated exceptional performance at 64 lm and a tilt angle of 40 degrees, achieving an average accuracy of 87.5% for detecting the colour of the ball, and 81.25% for determining its location based on colour. For the ball’s diameter estimation, it was found that the best estimation was received at 64 lm and 30 degrees, with both 96.32%.
Read moreAbstract 5273: A novel immunogenic cell death that exploits the cancer-specific overexpression of Rad51
Abstract Overexpression of the Homologous Recombination (HR) DNA repair pathway is often correlated with poor prognosis and metastatic disease. SyntheX developed STX100, a small, stabilized peptide that is able to disrupt the function of Rad51 - a crucial component of HR. STX100 exhibits low nanomolar affinity to the target, cell permeability, and proteolytic stability. STX100 has acute mono-agent activity that is selective towards HR-overexpressing cancer cells. Interestingly, STX100-mediated cell killing is independent of canonical cell death mechanisms (apoptosis, necroptosis, pyroptosis, ferroptosis, etc.). Rather, the elevated abundance of Rad51 in cancer cells relative to healthy tissues underlies the selective cytotoxicity resulting from an acute calcium surge upon STX100-mediated target engagement. The mechanism translates to in vivo models, where a single dose can achieve sustained survival when administered locally as a mono-therapy or in combination with an immune checkpoint blockade agent. Citation Format: Maria Soloveychik, Charly Chahwan. A novel immunogenic cell death that exploits the cancer-specific overexpression of Rad51 [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 5273.
Read moreDocumento de enfoque: evaluación del trabajo del Grupo BID en adaptación al cambio climático
El presente documento define el abordaje que la Oficina de Evaluación y Supervisión (OVE) adoptará en su evaluación del trabajo del Grupo Banco Interamericano de Desarrollo (BID) en la adaptación al cambio climático. Este incluye los objetivos, alcance, y metodología de la evaluación. Esta evaluación fue incorporada en los programas de trabajo de OVE 2021-2022 (documento RE-551-1) y 2022-2023 (documento RE-563-3), por solicitud de los Directorios del BID y BID Invest. La evaluación buscará informar de manera independiente a los Directorios del BID y BID Invest sobre el rol del Grupo BID en el apoyo a la región de América Latina y el Caribe (ALC) para lograr un crecimiento sostenible e inclusivo ante los choques climáticos.
Read moreEffect of Combined Intravenous Immunoglobulin and Classical Complement Inhibitor ANX005 in Guillain-Barré Syndrome (S25.002)
To assess the impact of combination intravenous immunoglobulin (IVIg) and ANX005 in Guillain-Barré Syndrome (GBS) patients from Bangladesh and Denmark.
Read moreMicroglia Mediate Early Corticostriatal Synapse Loss and Cognitive Dysfunction in Huntington’s Disease Through Complement-Dependent Mechanisms
Abstract Huntington’s disease (HD) is a devastating monogenic neurodegenerative disease characterized by early, selective pathology in the basal ganglia despite the ubiquitous expression of mutant huntingtin. The molecular mechanisms underlying this region-specific neuronal degeneration and how these relate to the development of early cognitive phenotypes are poorly understood. Here, we show that there is selective loss of synaptic connections between the cortex and striatum in postmortem tissue from HD patients that is associated with the increased activation and localization of complement proteins, innate immune molecules, to markers of these synaptic elements. We also find that levels of these secreted innate immune molecules are elevated in the CSF of premanifest HD patients and correlate with established measures of disease burden.In preclinical genetic models of HD we show that complement proteins mediate the selective elimination of corticostriatal synapses at an early stage in disease pathogenesis marking them for removal by microglia, the brain’s resident macrophage population. This process requires mutant huntingtin to be expressed in both cortical and striatal neurons and inhibition of this complement-dependent elimination mechanism through administration of a therapeutically relevant C1q function blocking antibody or genetic ablation of a complement receptor on microglia, prevented synapse loss, increased excitatory input to the striatum and rescued the early development of visual discrimination learning and cognitive flexibility deficits in these models. Together, our findings implicate microglia and the complement cascade in the selective, early degeneration of corticostriatal synapses and the development of cognitive deficits in presymptomatic HD, and also provide new preclinical data to support complement as a therapeutic target for early intervention.
Read moreStendhal vu de l’Italie contemporaine
Nous avons pensé qu’en annexe au dossier principal d’un numéro qui interroge le sens du terme Milanese appliqué à Stendhal, il serait intéressant de recueillir l’avis sur cette question de lecteurs italiens non spécialistes de l’auteur, ayant avec lui un rapport qui ne soit pas structuré par son propre métalangage ni par la critique. C’était pour nous plus généralement l’occasion de nous intéresser à la réception de Stendhal dans l’Italie contemporaine, en initiant une recherche « de terrain...
Read moreComplement and microglia mediate early synapse loss in Alzheimer mouse models.
Synapse loss in Alzheimer's disease (AD) correlates with cognitive decline. Involvement of microglia and complement in AD has been attributed to neuroinflammation, prominent late in disease. Here we show in mouse models that complement and microglia mediate synaptic loss early in AD. C1q, the initiating protein of the classical complement cascade, is increased and associated with synapses before overt plaque deposition. Inhibition of C1q, C3, or the microglial complement receptor CR3 reduces the number of phagocytic microglia, as well as the extent of early synapse loss. C1q is necessary for the toxic effects of soluble β-amyloid (Aβ) oligomers on synapses and hippocampal long-term potentiation. Finally, microglia in adult brains engulf synaptic material in a CR3-dependent process when exposed to soluble Aβ oligomers. Together, these findings suggest that the complement-dependent pathway and microglia that prune excess synapses in development are inappropriately activated and mediate synapse loss in AD.
Read moreMédecine pharmaceutique: Le débat sur les critères de substitution s'enflamme depuis peu
Les formations interdisciplinaires : problèmes, expériences, perspectives
formation originales. Dans le premier cas, il pourrait sembler plus appropri de parler de pluridisciplinarit , plutt que d' interdisciplinarit . Et dans le second cas, on pourrait parler simultanment de formation interdisciplinaire et de formation l'interdisciplinarit .
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