ABSTRACT
Purpose: The goal of this study was to compare the difference in binocular visual function for high and low?moderate myopes before and after femtosecond laser?assisted in situ keratomileusis (FS?LASIK). Methods: Thirty?three subjects (17 males and 16 females) were divided into two groups according to their preoperative refractive errors in spherical equivalent (SE): low?moderate myopia group (SE ??6.00 D) and high myopia group (SE <?6.00 D). The binocular visual function including accommodative amplitude (AA), accommodative facility (AF), positive and negative relative accommodation (PRA and NRA, respectively), horizontal phoria measurement, positive and negative fusion vergence, accommodative–convergence over accommodation (AC/A) ratio, and stereopsis were assessed with the best?corrected vision before patients received FS?LASIK and 7 and 30 days after the surgery. Repeated measures analysis of variance (ANOVA) was applied to study the change in binocular visual function. Results: The AF values in both groups were significantly reduced after 7 days of FS?LASIK (baseline vs. day 7 (mean): high myopia group: 7.85 vs. 5.62 cpm, repeated ANOVA, P = 0.01; low?moderate myopia group: 5.95 vs. 4.40 cpm, repeated ANOVA, P = 0.04). This change returned to the baseline level 30 days after the operation. In addition, the horizontal phoria values in both groups were significantly reduced for both distant (P = 0.019 and P = 0.001, respectively) and near (P = 0.003 and P = 0.049, respectively) 7 days after the operation, but they rebound to preoperative state after 30 days. Conclusion: A transient change in binocular visual function was noticed after 7 days of FS?LASIK operation, which could cause symptoms of asthenopia. Our data showed all the binocular visual functions returned to baseline level after 30 days of operation.
ABSTRACT
@#[摘 要] 目的：探究miR-133a-5p调控血清外泌体源性纤连蛋白1（fibronectin1，FN1）的表达对胃贲门腺癌（gastric cardia adenocarcinoma，GCA）细胞增殖、黏附和M1型巨噬细胞极化的影响。方法：借助GEO数据库分析GCA组织中的差异表达基因，进行功能富集分析。采用qPCR检测FN1在GCA组织、血清、血清外泌体和细胞中的表达。向GCA患者血清外泌体中转染FN1的过表达载体及其对照质粒，向HGC-27细胞中转染miR-133a-5p模拟物及其对照，将转染后的HGC-27细胞和外泌体共培养，再将此细胞与THP-1细胞共培养。采用CCK-8和细胞黏附实验分别检测各组HGC-27细胞的增殖和黏附情况，WB法、ELISA分别检测细胞中CD86、iNOS的水平以及对巨噬细胞分泌IL-6、IL-1β的影响。采用双荧光素酶报告基因实验验证FN1 mRNA和miR-133a-5p之间的相互作用关系。结果：与健康人对照组相比，GCA组织、血清、血清外泌体和细胞中的FN1表达水平显著上调（均P<0.05），FN1高表达的血清外泌体与GCA患者的TNM分期（P=0.032 9）和淋巴结转移有关联（P=0.012 7）。富含FN1的血清外泌体能够被GCA细胞内化，与过表达FN1的外泌体共培养能够提高HGC-27细胞的增殖和黏附能力，抑制THP-1细胞中IL-6、IL-1β、CD86和iNOS的表达，抑制M1型巨噬细胞极化（（P<0.05或P<0.01）。miR-133a-5p在GCA组织和细胞中较对照组显著降低，可负调控FN1的表达，过表达miR-133a-5p能够通过降低GCA细胞增殖和黏附能力，促进IL-6、IL-1β、CD86和iNOS的表达，部分逆转FN1对GCA细胞恶性行为的促进作用（P<0.05或P<0.01）。结论：miR-133a-5p可通过抑制血清外泌体分泌FN1对GCA细胞的恶性行为起抑制作用，对M1型巨噬细胞极化起促进作用。