RT info:eu-repo/semantics/article T1 Gene expression changes in conjunctival cells associated with contact lens wear and discomfort A1 Calderón García, Andrés Ángel A1 Valencia Nieto, Laura A1 Valencia Sandonis, Cristina A1 López de la Rosa, Alberto A1 Blanco Vázquez, Marta A1 Fernández Martínez, Itziar A1 García Vázquez, Carmen A1 Arroyo del Arroyo, Cristina A1 González García, María Jesús A1 Enriquez De Salamanca Aladro, Amalia K1 Lentes de contacto K1 Oftalmología K1 Conjunctival cells K1 Contact lens K1 Discomfort K1 Células conjuntivales K1 Lentes de contacto K1 Malestar K1 3201.09 Oftalmología AB This study aimed to analyze the differences in the expression of pain-related genes in conjunctival epithelial cells among symptomatic contact lens (CL) wearers (SCLWs), asymptomatic CL wearers (ACLWs), and non-CL wearers (non-CLWs).For this study, 60 participants (20 non-CLWs, 40 CLWs) were enrolled. The CLW group comprised 20 ACLWs and 20 SCLWs according to the Contact Lens Dry Eye Questionnaire short form©. Conjunctival cells were collected using impression cytology, and RNA was isolated and used to determine the expression levels of 85 human genes involved in neuropathic and inflammatory pain. The effects of CL wear and discomfort were evaluated using mixed-effects ANOVA with partially nested fixed-effects model. Gene set enrichment analysis was performed to assign biological meaning to sets of differentially expressed genesSix genes (CD200, EDN1, GRIN1, PTGS1, P2RX7, and TNF) were significantly upregulated in CLWs compared to non-CLWs. Eleven genes (ADORA1, BDKRB1, CACNA1B, DBH, GRIN1, GRM1, HTR1A, PDYN, PTGS1, P2RX3, and TNF) were downregulated in SCLWs compared to ACLWs. These genes were mainly related to pain, synaptic transmission and signaling, ion transport, calcium transport and concentration, and cell-cell signaling.CL wear modified the expression of pain- and inflammation-related genes in conjunctival epithelial cells. These changes may be in part, along with other mechanisms, responsible for CL discomfort in SCLWs. PB Elsevier SN 1542-0124 YR 2024 FD 2024 LK https://uvadoc.uva.es/handle/10324/64577 UL https://uvadoc.uva.es/handle/10324/64577 LA eng NO The Ocular Surface, 2024, vol. 31, p. 31-42 NO Producción Científica DS UVaDOC RD 17-jul-2024