Journal Clubs and Webinars

T.J. Hollingsworth presents his work where he characterized a new polygenic mouse model of inherited retinal dystrophies, the BXD32 mouse strain. He presents evidence that a proinflammatory environment in the retina supports and accelerates the degeneration of the retina and the loss of visual function.

Peroxisomal disorders and the PEX1-G844D mouse model for mild Zellweger Spectrum Disorder (ZSD), leads to retinal degeneration and vision loss. Catherine Argyriou will describe how her team used AAV8-mediated gene delivery to robustly and durably improve functional vision, retinal response, retinal structure, and biochemical metabolites in ZSD-mice.

This presentation will outline the pathobiology and visual phenotype of immune mediated optic neuropathies that include Multiple Sclerosis (MS), Neuromylitis optica spectrum disorders (NMOSD), and Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD).

In retinal vein occlusion (RVO), non-apoptotic expression of endothelial caspase-9 (EC Casp9) induces pathology including retinal edema, capillary ischemia, and neurodegeneration. Crystal Colón Ortiz presents mechanistic insights into EC Casp9 action, and the behavioral consequences such as contrast sensitivity decline.

Jana Remlinger et al. showed preserved visual function and ameliorated course of disease after anti-FcRn treatment in an experimental model using a monoclonal MOG-IgG to mimic MOGAD.

In this Webinar, Dr. Jeff Jamison will talk about “AcuiSee”, with which one can measure rodent vision based on an operant conditioning paradigm. Jeff is the developer of AcuiSee, and he now works as Director of In-Vivo Pharmacology at Experimentica.

It is difficult to measure small eyes of animal models. In this Journal Club, Prof. Frank Schaeffel presents his inventions for IR photorefraction and IR photokeratometry that facilitate such measurements. He focuses on the history, application, advantages, optics, software algorithms and calibration.

Some fish use active photolocation: Their eyes emit light to detect predators or pray in this spotlight. In this Journal Club, Prof. Nico Michiels from the University of Tübingen will talk about his fascinating journey in which he has discovered this phenomenon.

Neuroinflammation amplifies neural damage caused by genetic disorders or aging. Groh et al show that neuroinflammation has deleterious consequences for the optic nerve, and disease progression can be monitored with the OptoDrum.

Optogenetic gene therapy holds great promise for healing blindness. Hulliger et al have developed a new promoter that effectively targets human ON bipolar cells. This is an important step towards clinical applications of optogenetic gene therapy for restoring vision.

Nogo-A, an inhibitor of neural growth, prevents regeneration after injury. Blocking of Nogo-A aides recovery, also in the visual system after retinal damage. Baya Mdzomba show with our OptoDrum that visual behavior benefits from Nogo-A neutralization after retinal damage typically found in diabetic retinopathy or glaucoma.

The Jackson Laboratory will introduce their Neurobehavior Phenotyping Core, in which they also do visual acuity measurements. They will present two examples where the OptoDrum has been used to characterizte vision in animal models for rare disease: The Charcot-Marie-Tooth-disease, and Multiple-Sulfatase-Deficiency.

In vision research, observing the optomotor reflex (OMR) is an important and widely established method for assessing visual acuity and contrast sensitivity in rodents. In this event, we will hear about several applications of OMR measuremnts, ranging from quantification of retinal degeneration to characterization of night vision.