Journal: iScience
Article Title: Exendin-4 promotes retinal ganglion cell survival and function by inhibiting calcium channels in experimental diabetes
doi: 10.1016/j.isci.2023.107680
Figure Lengend Snippet: Brn3a-labeled RGCs in control, DM and different drug-treated retinas (A1–C3) Fluorescence micrographs from the peripheral, middle and central regions in flat-mount retinas showing Brn3a-labeled surviving RGCs in normal (A1–C1), DM eyes treated with (A3–C3) or without saline (A2–C2). (A4–C7) Fluorescence micrographs from the peripheral, middle and central regions in flat-mounted retinas depicting Brn3a-labeled RGCs in DM eyes treated with Ex-4 (A4–C4), Ex-9-39+Ex-4 (A5–C5), BayK-8644 (A6–C6), or BayK-8644+Ex-4 (A7–C7). Topical administration of Ex-4 increased RGC viability in the peripheral and middle regions of the retinas (A4, B4). Administration of Ex-9-39 (A5, B5) or BayK-8644 (A7, B7) blocked the protective effects of Ex-4 on RGCs. Scale bar: 50 μm.
Article Snippet: Ex-4, nimodipine, Ex-9-39 and BayK-8644 were purchased from MedChemExpress (Monmouth Junction, NJ, USA), while TTX, Ryanodine, W-7 and U-73122 were from Tocris Bioscience (Ellisville, MO, USA).
Techniques: Labeling, Fluorescence, Saline