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To examine the therapeutic potential of combined galanin receptor 3 (GALR3) inhibition and antioxidant therapy in a mutation-independent context, we utilized the rd10 mouse model of RP. We first evaluated the effects of individual treatments with the GALR3 antagonist SNAP-37889 and the antioxidant quercetin, followed by a combined treatment regimen to determine whether simultaneous targeting of neuroinflammatory and oxidative stress pathways provides enhanced retinal protection. Treatment efficacy was assessed using functional and morphological analyses, including electroretinography (ERG) to measure retinal function, optical coherence tomography (OCT) to evaluate retinal structure in vivo, and histological and immunohistochemical analyses to quantify photoreceptor survival and markers of retinal oxidative stress and inflammation. Although the expression levels of individual inflammatory and oxidative stress markers did not consistently exhibit additive responses, the combined treatment produced greater photoreceptor survival and preservation of photopic retinal function than either monotherapy alone. These findings support the hypothesis that simultaneous modulation of oxidative stress and neuroinflammation provides greater neuroprotective benefits, establish a foundation for the development of mutation-independent therapeutic strategies for RP, and identify GALR3 as a promising therapeutic target.<\/jats:p>","DOI":"10.3390\/antiox15091073","type":"journal-article","created":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T10:58:21Z","timestamp":1787828301000},"page":"1073","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Dual Targeting of Galanin Receptor 3 Signaling and Redox Homeostasis Enhances Photoreceptor Survival in Retinas of rd10 Mice"],"prefix":"10.3390","volume":"15","author":[{"given":"Maria","family":"Azam","sequence":"first","affiliation":[{"name":"Department of Pharmacology, School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingda","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Pharmacology, School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5209-8685","authenticated-orcid":false,"given":"Beata","family":"Jastrzebska","sequence":"additional","affiliation":[{"name":"Department of Pharmacology, School of Medicine, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA"},{"name":"Cleveland Center for Membrane and Structural Biology, Case Western Reserve University, 10900 Euclid Ave., Cleveland, OH 44106, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1038\/nrg2717","article-title":"Photoreceptor degeneration: Genetic and mechanistic dissection of a complex trait","volume":"11","author":"Wright","year":"2010","journal-title":"Nat. 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