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Molecular Vision

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https://www.readbyqxmd.com/read/29225458/antiangiogenic-effect-of-dasatinib-in-murine-models-of-oxygen-induced-retinopathy-and-laser-induced-choroidal-neovascularization
#1
Songyi Seo, Wonhee Suh
Purpose: Vascular endothelial growth factor (VEGF) is a principal mediator of pathological ocular neovascularization, which is the leading cause of blindness in various ocular diseases. As Src, a non-receptor tyrosine kinase, has been implicated as one of the major signaling molecules in VEGF-mediated neovascularization, the present study aimed to investigate whether dasatinib, a potent Src kinase inhibitor, could suppress pathological ocular neovascularization in murine models of oxygen-induced retinopathy (OIR) and choroidal neovascularization (CNV)...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29225457/corneal-regeneration-by-induced-human-buccal-mucosa-cultivated-on-an-amniotic-membrane-following-alkaline-injury
#2
Rohaina Che Man, Then Kong Yong, Ng Min Hwei, Wan Haslina Wan Abdul Halim, Aida Zairani Mohd Zahidin, Roszalina Ramli, Aminuddin Bin Saim, Ruszymah Binti Hj Idrus
Various clinical disorders and injuries, such as chemical, thermal, or mechanical injuries, may lead to corneal loss that results in blindness. PURPOSE: The aims of this study were to differentiate human buccal mucosa (BMuc) into corneal epithelial-like cells, to fabricate engineered corneal tissue using buccal mucosal epithelial cells, and to reconstruct a damaged corneal epithelium in a nude rat model. Methods: BMuc were subjected to 10 d of induction factors to investigate the potential of cells to differentiate into corneal lineages...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29225456/ciliary-neurotrophic-factor-in-patients-with-primary-open-angle-glaucoma-and-age-related-cataract
#3
Alexander A Shpak, Alla B Guekht, Tatiana A Druzhkova, Ksenia I Kozlova, Natalia V Gulyaeva
Purpose: To study the ciliary neurotrophic factor (CNTF) concentration in the aqueous humor (AH), lacrimal fluid (LF), and blood serum (BS) in patients with age-related cataract and primary open-angle glaucoma (POAG). Methods: CNTF concentrations were studied in 61 patients with age-related cataract, 55 patients with POAG combined with cataract, and 29 healthy controls (one eye in each person). Preliminary experiments permitted us to extend the minimum quantifiable value of the CNTF Quantikine enzyme-linked immunosorbent assay (ELISA) kit to 2...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29204068/%C3%AE-adrenergic-agonist-brimonidine-control-of-experimentally-induced-myopia-in-guinea-pigs-a-pilot-study
#4
Yan Liu, Yuexin Wang, Huibin Lv, Xiaodan Jiang, Mingzhou Zhang, Xuemin Li
Purpose: To investigate the efficacy of α-adrenergic agonist brimonidine either alone or combined with pirenzepine for inhibiting progressing myopia in guinea pig lens-myopia-induced models. Methods: Thirty-six guinea pigs were randomly divided into six groups: Group A received 2% pirenzepine, Group B received 0.2% brimonidine, Group C received 0.1% brimonidine, Group D received 2% pirenzepine + 0.2% brimonidine, Group E received 2% pirenzepine + 0.1% brimonidine, and Group F received the medium...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29204067/heterozygous-mutation-in-otx2-associated-with-early-onset-retinal-dystrophy-with-atypical-maculopathy
#5
Maram Ea Abdalla-Elsayed, Patrik Schatz, Christine Neuhaus, Arif O Khan
Purpose: Heterozygous mutations in OTX2 have been associated with a range of ocular and pituitary abnormalities. We report a novel heterozygous deletion in OTX2 underlying early-onset retinal dystrophy with atypical maculopathy. Methods: Clinical examination included electroretinography and multimodal retinal imaging. Molecular genetic testing was composed of next-generation sequencing of a panel of retinal dystrophy genes. Results: A now 17-year-old boy presented 12 years earlier with a history of progressively poor vision since birth, nyctalopia, and early-onset retinal dystrophy with atypical maculopathy...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29142497/expression-of-ccl2-and-its-receptor-in-activation-and-migration-of-microglia-and-monocytes-induced-by-photoreceptor-apoptosis
#6
ChaoYi Feng, Xin Wang, TianJin Liu, Meng Zhang, GeZhi Xu, YingQin Ni
Purpose: To explore the effect of the CCL2 and CCR2 system on the activation and migration of microglia and monocytes in light-induced photoreceptor apoptosis. Methods: At 1 day, 3 days, 7 days, and 14 days after light exposure, OX42 and ED1 immunostaining were used to label the activation and migration of microglia and monocytes. Double immunostaining of CCL2 with terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), OX42, or glial fibrillary acidic protein (GFAP) was applied to explore the relationships among CCL2, apoptotic photoreceptors, activated microglia and monocytes, and macroglial cells (Müller cells and astrocytes)...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29123364/corneal-lenticule-storage-before-reimplantation
#7
Yu-Chi Liu, Geraint P Williams, Ben L George, Yu Qiang Soh, Xin Yi Seah, Gary Swee Lim Peh, Gary Hin Fai Yam, Jodhbir S Mehta
Purpose: To explore the optimal lenticule storage conditions that maintain lenticule integrity and clarity. Methods: A total of 99 lenticules obtained from myopic patients undergoing small incision lenticule extraction (SMILE) were divided into four combinations for short-term storage conditions: PBS, Dulbecco's Modified Eagle's Medium (DMEM), Optisol GS, or anhydrous glycerol. Two thirds of the lenticules were further stored for 4 weeks under eight different conditions...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29062223/enhancing-the-efficacy-of-areds-antioxidants-in-light-induced-retinal-degeneration
#8
Paul Wong, M Markey, C M Rapp, R M Darrow, A Ziesel, D T Organisciak
PURPOSE: Light-induced photoreceptor cell degeneration and disease progression in age-related macular degeneration (AMD) involve oxidative stress and visual cell loss, which can be prevented, or slowed, by antioxidants. Our goal was to test the protective efficacy of a traditional Age-related Eye Disease Study antioxidant formulation (AREDS) and AREDS combined with non-traditional antioxidants in a preclinical animal model of photooxidative retinal damage. METHODS: Male Sprague-Dawley rats were reared in a low-intensity (20 lux) or high-intensity (200 lux) cyclic light environment for 6 weeks...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29062222/retinal-gene-expression-responses-to-aging-are-sexually-divergent
#9
Mei Du, Colleen A Mangold, Georgina V Bixler, Robert M Brucklacher, Dustin R Masser, Michael B Stout, Michael H Elliott, Willard M Freeman
PURPOSE: Sex and age are critical factors in a variety of retinal diseases but have garnered little attention in preclinical models. The current lack of knowledge impairs informed decision making regarding inclusion and design of studies that incorporate both sexes and/or the effects of aging. The goal of this study was to examine normative mouse retina gene expression in both sexes and with advancing age. METHODS: Retinal gene expression in female and male C57BL/6JN mice at 3 months and 24 months of age were compared for sex differences and aging responses through whole transcriptome microarray analysis...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29062221/the-importance-of-genetic-testing-as-demonstrated-by-two-cases-of-cacna1f-associated-retinal-generation-misdiagnosed-as-lca
#10
Clara J Men, Kinga M Bujakowska, Jason Comander, Emily Place, Emma C Bedoukian, Xiaosong Zhu, Bart P Leroy, Anne B Fulton, Eric A Pierce
PURPOSE: To describe in detail cases with an initial diagnosis of Leber congenital amaurosis that were later found to have a hemizygous mutation in the CACNA1F gene. METHODS: The patients underwent a detailed ophthalmological evaluation and full-field electroretinography (ERG). Selective targeted capture and whole-exome next-generation sequencing (NGS) were used to find the disease-causing mutations. RESULTS: Patient 1 presented at age 3 months with nystagmus, normal visual attention, and a normal fundus exam...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29046608/elucidating-the-molecular-basis-of-ppcd-effects-of-decreased-zeb1-expression-on-corneal-endothelial-cell-function
#11
Marina Zakharevich, Jaffer M Kattan, Judy L Chen, Benjamin R Lin, Aleck E Cervantes, Doug D Chung, Ricardo F Frausto, Anthony J Aldave
PURPOSE: To investigate the functional role that the zinc e-box binding homeobox 1 (ZEB1) gene, which underlies the genetic basis of posterior polymorphous corneal dystrophy 3 (PPCD3), plays in corneal endothelial cell proliferation, apoptosis, migration, and barrier function. METHODS: A human corneal endothelial cell line (HCEnC-21T) was transfected with siRNA targeting ZEB1 mRNA. Cell proliferation, apoptosis, migration, and barrier assays were performed: Cell proliferation was assessed with cell counting using a hemocytometer; cell apoptosis, induced by either ultraviolet C (UVC) radiation or doxorubicin treatment, was quantified by measuring cleaved caspase 3 (cCASP3) protein levels; and cell migration and barrier function were monitored with electric cell-substrate impedance sensing (ECIS)...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29033534/multicellular-tumor-spheroids-of-human-uveal-melanoma-induce-genes-associated-with-anoikis-resistance-lipogenesis-and-ssxs
#12
Charlotte Ness, Øystein Garred, Nils A Eide, Theresa Kumar, Ole K Olstad, Thomas P Bærland, Goran Petrovski, Morten C Moe, Agate Noer
PURPOSE: Uveal melanoma (UM) has a high propensity for metastatic spread, and approximately 40-50% of patients die of metastatic disease. Metastases can be found at the time of diagnosis but also several years after the tumor has been removed. The survival of disseminated cancer cells is known to be linked to anchorage independence, anoikis resistance, and an adaptive cellular metabolism. The cultivation of cancer cells as multicellular tumor spheroids (MCTS) by anchorage-independent growth enriches for a more aggressive phenotype...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28966549/myopia-induced-by-flickering-light-in-guinea-pig-eyes-is-associated-with-increased-rather-than-decreased-dopamine-release
#13
Xiumei Luo, Bing Li, Tao Li, Yue Di, Changyue Zheng, Shunmei Ji, Yuanyuan Ma, Jie Zhu, Xuefeng Chen, Xiaodong Zhou
PURPOSE: It is well known that the dopaminergic signaling pathway plays a pivotal role in the control of axial elongation. Much research has shown that retinal dopamine (DA) is decreased in experimental myopia, but the exact alteration in DA quantity underlying the myopia model induced by flickering light (FL) has not yet been fully elucidated. Therefore, in this study, we first attempted to prove the feasibility of the myopia model induced by FL and then to determine whether and how DA and its receptors changed in myopia induced by FL...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28966548/genome-wide-linkage-and-association-analysis-of-primary-open-angle-glaucoma-endophenotypes-in-the-norfolk-island-isolate
#14
Elizabeth Matovinovic, Pik Fang Kho, Rodney A Lea, Miles C Benton, David A Eccles, Larisa M Haupt, Alex W Hewitt, Justin C Sherwin, David A Mackey, Lyn R Griffiths
PURPOSE: Primary open-angle glaucoma (POAG) refers to a group of heterogeneous diseases involving optic nerve damage. Two well-established risk factors for POAG are elevated intraocular pressure (IOP) and a thinner central corneal thickness (CCT). These endophenotypes exhibit a high degree of heritability across populations. Large-scale genome-wide association studies (GWASs) of outbred populations have robustly implicated several susceptibility gene variants for both IOP and CCT. Despite this progress, a substantial amount of genetic variance remains unexplained...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28966547/diagnostic-application-of-clinical-exome-sequencing-in-leber-congenital-amaurosis
#15
Jinu Han, John Hoon Rim, In Sik Hwang, Jieun Kim, Saeam Shin, Seung-Tae Lee, Jong Rak Choi
PURPOSE: Leber congenital amaurosis (LCA) is a hereditary retinal dystrophy with wide genetic heterogeneity. Next-generation sequencing (NGS) targeting multiple genes can be a good option for the diagnosis of LCA, and we tested a clinical exome panel in patients with LCA. METHODS: A total of nine unrelated Korean patients with LCA were sequenced using the Illumina TruSight One panel, which targets 4,813 clinically associated genes, followed by confirmation using Sanger sequencing...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28943754/pinus-densiflora-bark-extract-prevents-selenite-induced-cataract-formation-in-the-lens-of-sprague-dawley-rat-pups
#16
Jun Kim, Se-Young Choung
PURPOSE: Rat pups treated with sodium selenite are typically used as an in vivo model to mimic age-related nuclear cataract. Reactive oxygen species (ROS) production, lipid peroxidation, reduction of antioxidant enzymes, crystalline proteolysis, and apoptosis are considered factors that contribute to pathogenesis of age-related nuclear cataract. In the present study, we investigated whether Pinus densiflora bark extract has potential to prevent cataract formation and elucidated the underlying mechanism...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28928627/a-novel-truncation-mutation-in-crybb1-associated-with-autosomal-dominant-congenital-cataract-with-nystagmus
#17
Yan Rao, Sufang Dong, Zuhua Li, Guohua Yang, Chunyan Peng, Ming Yan, Fang Zheng
PURPOSE: To identify the potential candidate genes for a large Chinese family with autosomal dominant congenital cataract (ADCC) and nystagmus, and investigate the possible molecular mechanism underlying the role of the candidate genes in cataractogenesis. METHODS: We combined the linkage analysis and direct sequencing for the candidate genes in the linkage regions to identify the causative mutation. The molecular and bio-functional properties of the proteins encoded by the candidate genes was further explored with biophysical and biochemical studies of the recombinant wild-type and mutant proteins...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28867932/a-dna-dot-hybridization-model-for-molecular-diagnosis-of-parasitic-keratitis
#18
Fu-Chin Huang, Hsin-Yi Hsieh, Tsung C Chang, Shu-Li Su, Shin-Ling Tseng, Yu-Hsuan Lai, Ming-Tse Kuo
PURPOSE: Developing a DNA dot hybridization model for diagnosing parasitic keratitis. METHODS: Newly designed oligonucleotide probes for detecting Acanthamoeba and microsporidia were tested with target reference strains of Acanthamoeba (n = 20) and microsporidia (n = 3), and non-target microorganisms, including bacteria (n = 20) and fungi (n = 20). These probes, which had passed the preliminary tests, were then assembled as a parasite dot hybridization (PDH) model for assessing 33 clinical samples from patients with clinically suspected Acanthamoeba and microsporidia keratitis, including eight positives for Acanthamoeba, 13 positives for microsporidia, and 12 negatives for both pathogens...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28867931/targeted-next-generation-sequencing-analysis-identifies-novel-mutations-in-families-with-severe-familial-exudative-vitreoretinopathy
#19
Xiao-Yan Huang, Hong Zhuang, Ji-Hong Wu, Jian-Kang Li, Fang-Yuan Hu, Yu Zheng, Laurent Christian Asker M Tellier, Sheng-Hai Zhang, Feng-Juan Gao, Jian-Guo Zhang, Ge-Zhi Xu
PURPOSE: Familial exudative vitreoretinopathy (FEVR) is a genetically and clinically heterogeneous disease, characterized by failure of vascular development of the peripheral retina. The symptoms of FEVR vary widely among patients in the same family, and even between the two eyes of a given patient. This study was designed to identify the genetic defect in a patient cohort of ten Chinese families with a definitive diagnosis of FEVR. METHODS: To identify the causative gene, next-generation sequencing (NGS)-based target capture sequencing was performed...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28855795/reduction-in-ocular-complement-factor-b-protein-in-mice-and-monkeys-by-systemic-administration-of-factor-b-antisense-oligonucleotide
#20
Tamar R Grossman, Michele Carrer, Lijiang Shen, Robert B Johnson, Lisa A Hettrick, Scott P Henry, Brett P Monia, Michael L McCaleb
PURPOSE: Age-related macular degeneration (AMD) is the leading cause of permanent vision loss among the elderly in many industrialized countries, and the complement system plays an important role in the pathogenesis of AMD. Inhibition of complement factor B, a key regulator of the alternative pathway, is implicated as a potential therapeutic intervention for AMD. Here we investigated the effect of liver factor B reduction on systemic and ocular factor B levels. METHODS: Second-generation antisense oligonucleotides (ASOs) targeting mouse and monkey factor B mRNA were administered by subcutaneous injection to healthy mice or monkeys, and the level of factor B mRNA was assessed in the liver and the eye...
2017: Molecular Vision
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