bacteriorhodopsin operates as a light/proton transfer pump which converts the light energy into a proton gradient. energy stored in the proton gradient can be used in a variety of ways. bacteriorhodopsin producing sources are some halobacterium species such as halobacterium sodomense and halobacterium salinarum which continue to grow in harsh and salt-saturated conditions. two types of red pigm...

PURPOSE To determine the effect of the calcium signaling modulating drug carboxyamido-triazole (CAI) on substeps of exudative age-related macular degeneration (AMD) in vitro. MATERIALS AND METHODS Zymography and ELISA determined the effect of CAI on MMP-2 production of choroidal endothelial cells (CECs) stimulated by bFGF and VEGF. The effects of CAI on attachment of retinal pigment endotheli...

BACKGROUND Several cell lines and primary cultures benefit from the use of positively charged extracellular matrix proteins or polymers that enhance their ability to attach to culture plates. Polyethyleneimine is a positively charged polymer that has gained recent attention as a transfection reagent. A less known use of this cationic polymer as an attachment factor was explored with several cel...

As shown by scanning electron and phase contrast microscopy, Treponema pallidum attached in vitro to basement membranes purified from kidney cortex tissues or from retinal vessels. This organism also attached to the extracellular matrix remaining after cultured cells had been solubilised with Triton X. Fibronectin, laminin, collagen, IV, collagen I, and hyaluronic acid are structural components...

purpose: to compare the safety, efficacy, and visual results of laser in situ keratomileusis (lasik) in eyes with and without previous scleral buckling surgery in the same individuals. methods: in a prospective clinical trial, 14 eyes of 7 patients with myopic refractive error and history of scleral buckling in one eye, underwent lasik surgery in both eyes according to a standard surgical proto...

retinal detachment surgery has been considered an inpatient hospital procedure requiring preoperative and postoperative hospitalization. in this pilot study, outpatient retinal detachment surgery was performed on sixteen patients and the results (100% success rate after an average follow-up of 8.3 months) were comparable or better than reported overall success rates for retinal detachment in th...

purpose: to evaluate the outcomes of internal tamponade using heavy silicone oil in complicated retinal detachment (rd) surgery. methods: in this interventional case series, patients with complicated rd involving the inferior retina were enrolled. inclusion criteria included rd secondary to proliferative vitreoretinopathy (pvr cp6 and/or ca6) involving the inferior retina, inferior or posterior...

the purpose of present research was comparing tendency to risky behaviours in secure/insecure attachment in parents (mother/father). the results showed that those showing insecure attachment patterns towards the mother were significantly higher at risk to become cigarette smokers, drug persuasion, and alcohol drinkers compared to those with secure attachment patterns. those showing insecure att...

Retinal pigment epithelial (RPE) stem cells offer a theoretical treatment strategy for a wide variety of retinal disorders including age-related macular degeneration (AMD) and retinal dystrophies. There are, however, a number of hurdles that will have to be overcome before a consistently reliable and successful therapy can be offered to patients. These include expansion of sufficient numbers of...