Neurophotonics 2017 Jan 16;4(1):011005. Epub 2016 Aug 16.
Universidad Central del Caribe , School of Medicine, Department of Physiology, Bayamón 00960-6032, Puerto Rico.
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Microsc Microanal 2016 Apr 1;22(2):379-86. Epub 2016 Mar 1.
6Department of Physiology,Central University of the Caribbean,Bayamon, PR 00956,USA.
Specialized intermediate filaments (IFs) have critical importance for the clearness and uncommon transparency of vertebrate lens fiber cells, although the physical mechanisms involved are poorly understood. Recently, an unusual low-scattering light transport was also described in retinal Müller cells. Exploring the function of IFs in Müller cells, we have studied the morphology and distribution pattern of IFs and other cytoskeletal filaments inside the Müller cell main processes in the foveolar part of the avian (pied flycatcher) retina. Read More
J Photochem Photobiol B 2017 Aug 3;173:282-290. Epub 2017 Jun 3.
University of Puerto Rico, Rio Piedras Campus, PO Box 23343, San Juan, PR 00931-3343, USA. Electronic address:
Presently we continue our studies of the quantum mechanism of light energy transmission in the form of excitons by axisymmetric nanostructures with electrically conductive walls. Using our theoretical model, we analyzed the light energy transmission by biopolymers forming optical channels within retinal Müller cells. There are specialized intermediate filaments (IF) 10-18nm in diameter, built of electrically conductive polypeptides. Read More
Photonics Nanostruct 2015 Aug;16:24-33
University of Puerto Rico, Rio Piedras Campus, PO Box 23343, San Juan, PR 00931-3343, USA.
Recently we have analyzed light transmission and spectral selectivity by optical channels in Müller cells and other transparent cells, proposing a model of their structure, formed by specialized intermediate filaments [1,2]. Our model represents each optical channel by an axially symmetric tube with conductive walls. Presently, we analyze the planar polarization selectivity in long nanostructures, using the previously developed approach extended to structures of the elliptic cross-section. Read More
J Cell Biol 1996 Feb;132(4):643-55
Program of Cell Biology, European Molecular Biology Laboratory, Heidelberg, Federal Republic of Germany.
The fiber cells of the eye lens possess a unique cytoskeletal system known as the "beaded-chain filaments" (BFs). BFs consist of filensin and phakinin, two recently characterized intermediate filament (IF) proteins. To examine the organization and the assembly of these heteropolymeric IFs, we have performed a series of in vitro polymerization studies and transfection experiments. Read More