Lens Epithelial Cells
Mostrando 1-12 de 66 artigos, teses e dissertações.
-
1. Oxidative Modifications in Crystallin Proteins and Lens Epithelial Cells Associated with Photosensitized Reactions Mediated by the Major Chromophore Arising from Glucose Degradation
Deleterious effect mediated by glucose degradation, as a parallel pathway to Maillard reaction, was analyzed in terms of the feasibility of inducing photo-crosslinking in isolated bovine crystalline proteins when exposed to ultraviolet A (UVA)-visible light. These experiments showed evidence supporting the generation of a glucose-derived chromophore (GDC). T
J. Braz. Chem. Soc.. Publicado em: 2016-02
-
2. Trypan blue 0.1% action analysis on anterior capsule and lens epithelial cells: immunohistochemistry and ultrastructural study / Análise da ação do azul do tripano a 0,1% na cápsula anterior e no epitélio subcapsular do cristalino: estudo imunohistoquímico e ultraestrutural
O objetivo do estudo foi analisar a cápsula e o epitéilo subcapsular cristaliniano (ESC) de pacientes submetidos à capsulotomia curvilínea contínua (CCC) utilizando o corante azul de tripano (AT) a 0,1%, através de microscopia óptica (MO), da técnica TUNEL, de imunohistoquímica e de microscopia eletrônica transmissão (MET). Realizamos um estudo pr
Publicado em: 2010
-
3. Epithelial morphological response to soft hydrogel contact lenses.
Hydrogel (HEMA) contact lenses of increased thickness were worn by owl monkeys (Aotus tivergatus) under open and closed eye conditions to study ultrastructurally the corneal epithelial response to increased stress. The 0.07 mm thick lens with a calculated Dk/L of 4.2-2.2 caused an epithelial thinning without oedema. This thinning was due to a loss of superfi
-
4. The human anterior lens capsule--an attempted chemical debridement of epithelial cells by ethylenediaminetetracetic acid (EDTA) and trypsin.
The addition of edetic acid (EDTA) or trypsin to the infusion during a simulated extracapsular cataract extraction on cadaver eyes facilitates the removal of lens epithelial cells from the anterior capsule. Modification of the chemical composition of infusions used during extracapsular surgery may maximise lens epithelial cell removal and hence reduce the in
-
5. In vivo human lens epithelial cell proliferation on the anterior surface of PMMA intraocular lenses.
AIMS: To study in vivo human lens epithelial cell proliferation on the anterior surface of PMMA implants and its interaction with postoperative blood-aqueous barrier breakdown in eyes undergoing cataract surgery. METHODS: A prospective study was carried out on three consecutive patient cohorts undergoing cataract surgery with intraocular lens implantation us
-
6. Differentiation of Lens-Like Structures from Newt Iris Epithelial Cells In Vitro
Dissociated cells of pigmented iris epithelium from adult newts grew intensively in monolayer cultures after a lag of two to three weeks. During the lag period, depigmentation occurred in many cells. When cultures became confluent five to six weeks after seeding, many tiny lens-like structures (30-70 per plate) differentiated from dense foci of amelanotic ep
-
7. Conservation of fibroblast growth factor function in lens regeneration
In urodele amphibians, lens induction during development and regeneration occurs through different pathways. During development, the lens is induced from the mutual interaction of the ectoderm and the optic vesicle, whereas after lentectomy the lens is regenerated through the transdifferentiation of the iris-pigmented epithelial cells. Given the known role o
The National Academy of Sciences of the USA.
-
8. Tissue- and species-specific promoter elements of rat gamma-crystallin genes.
The 5' flanking regions of the six rat gamma-crystallin genes (gamma A-gamma F) are all capable of conferring lens-specific expression to the bacterial chloramphenicol acetyl transferase (CAT) reporter gene in either transdifferentiating chicken neural retina cells or mouse lens epithelial cells. Deletion mapping of the most active gamma-crystallin promoter
-
9. Capsular 'pits' in the human lens.
The lens capsule is an atypical basement membrane surrounding the lens epithelial cells and lens fibres which make up the remainder of the human lens. A seemingly unreported morphological change visible in the lens capsule with the biomicroscope is described.
-
10. Induction of the Stellate Configuration in Cultured Iris Epithelial Cells by Adenosine and Compounds Related to Adenosine 3′:5′-Cyclic Monophosphate
Adenosine, dibutyryl cyclic AMP, monobutyryl cyclic AMP, cyclic AMP, and 5′-AMP have a remarkable morphogenetic effect on cultured iris epithelial cells obtained from adult newt. They alter the broad undulating membrane of the cell into branching strands of cytoplasm, a configuration that has been named “stellate.” Theophylline, a phosphodiesterase inh
-
11. Requirement for the c-Maf transcription factor in crystallin gene regulation and lens development
The vertebrate lens is a tissue composed of terminally differentiated fiber cells and anterior lens epithelial cells. The abundant, preferential expression of the soluble proteins called crystallins creates a transparent, refractive index gradient in the lens. Several transcription factors such as Pax6, Sox1, and L-Maf have been shown to regulate lens develo
The National Academy of Sciences.
-
12. Species-specific lens activation of the thymidine kinase promoter by a single copy of the mouse alpha A-CRYBP1 site and loss of tissue specificity by multimerization.
One copy of the mouse alpha A-crystallin gene alpha A-CRYBP1 site activated the thymidine kinase (tk) promoter in a mouse lens epithelial cell line but not in primary chicken lens cells; multiple copies further activated the tk promoter and extended expression to fibroblasts, B cells, and chicken lens cultures. The loss of lens specificity by multimerization