RT info:eu-repo/semantics/article T1 Hair cortisol level as a molecular biomarker in retinitis pigmentosa patients A1 Mateos Olivares, Milagros A1 Sobas Abad, Eva María A1 Puertas Neyra, Kevin Louis A1 Peralta Ramírez, María Isabel A1 González Pérez, Raquel A1 Martín Vallejo, Javier A1 García Vázquez, Carmen A1 Coco Martín, Rosa María A1 Pastor Jimeno, José Carlos A1 Pastor Idoate, Salvador A1 Usategui Martín, Ricardo K1 Retinitis pigmentosa K1 Hair cortisol K1 Pelo - Cortisol K1 Molecular biomarkers K1 Biomarcadores moleculares AB Purpose: Retinitis pigmentosa (RP) patients commonly experience negative psychological states due to their progressive and unpredictable loss of vision and visual variations related to stress. The aim of this study was to examine hair cortisol concentrations (HCCs), which is usually associated with chronic stress, pretending to unveil possible associations between underlying psychological factors and disease severity in RP patients.Methods: Seventy-eight RP patients and 148 healthy controls were included in this study. A complete ophthalmological exam was performed in all patients to grade into severity disease groups. Perceived stress and trait-anxiety were measured by the State-Trait Anxiety Inventory (STAI) questionnaire.Results: Fifty-two (67%) patients had severe RP and 26 (33%) mild-moderate RP. Fifty-eight (58,9%) patients reported severely levels of stress and 18 (23.,1%) highly levels assessed by STAI questionnaire. RP patients exhibited higher HCCs (500.04 ± 120.99 pg/mg) than in controls (136.17 ± 60.51 pg/mg; p < 0.001). Severe RP patients had significant higher HCCs than mild-moderate patients differing in 274.27 pg/mg (p < 0.001). RP severity grade and perceived anxiety levels in the questionaries were not associated. Group differences were not affected by relevant covariates (age, grade of severity, stress status, and gender).Conclusions: HCC seems an effective biomarker associated with chronic stress in RP patients. This study shows that HCC in patients with RP are elevated compared to population-based controls, and association between HCC and RP severity was found. Future research is needed to characterize the effect of untreated negative psychological states on progression of the disease if any. PB Elsevier SN 0014-4835 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/53072 UL https://uvadoc.uva.es/handle/10324/53072 LA eng NO Experimental Eye Research, 2022, vol. 219, 109019 NO Producción Científica DS UVaDOC RD 12-sep-2024