摘要:
Disclosed herein are instruments and methods for delivery of substrates, including cell-seeded substrates, to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
摘要:
Disclosed herein are instruments and methods for delivery of substrates, including cell-seeded substrates, to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
摘要:
Disclosed herein are substrates for cell delivery to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide seeded cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
摘要:
Disclosed herein are substrates for cell delivery to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide seeded cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
摘要:
Disclosed herein are substrates for cell delivery to target tissues requiring treatment for various diseases that induce cell death, damage or loss of function. The substrates are configured to provide seeded cells, including stem cells, with a structural support that allows interconnection with and transmission of biological signals between the cells and the target tissue.
摘要:
Disclosed herein are methods and compositions for the cryopreservation of stem cells, such as stem-cell derived retinal pigment epithelial cells, that have been seeded onto and cultured on a substrate, such as a polymeric substrate. Such cryopreserved stem cells are useful for cell therapies, such as treatment of ocular damage or disease.
摘要:
Disclosed herein are generally to methods and systems that facilitate imaging of cells on a substrate and more particularly to pre-implantation (in vitro) and post-implantation (in vivo) imaging of cell-seeded substrates implanted in target tissues in the context of stem cell therapy.
摘要:
Disclosed herein are generally to methods and systems that facilitate imaging of cells on a substrate and more particularly to pre-implantation (in vitro) and post-implantation (in vivo) imaging of cell-seeded substrates implanted in target tissues in the context of stem cell therapy.
摘要:
This system gives the experimenter great flexibility to present spatio-temporal stimulation patterns to a subject. A video configuration file (VCF) editor allows the experimenter to determine the electrical stimulation parameters for each electrode. A Pattern Stimulation software program allows direct stimulation of chosen patterns of electrodes, scaled by the subject's VCF, through a Graphical User Interface. The subject then responds by drawing the outline of the phosphene he or she perceives on a touchscreen. The Pattern Stimulation program saves all of the trial parameters and the parameters of an ellipse fit to their drawing, as well as a raw data file containing the input to the touchscreen is saved. After the experiment, offline image analysis can be performed to obtain a detailed quantitative description of the subject's percepts. Image descriptors can assigned to the touchscreen data; these image descriptors can be used to make formalized comparisons between various experimental conditions. Various types of image descriptors can be used, including simple ellipse fitting, projections of the 2-D drawings onto one-dimensional axes, calculations of Hu moments, PCA, and ICA.
摘要:
The present invention is an improved method of electrically stimulating percepts in a patient with a visual prosthesis, to induce a more controlled perception of light. In particular, the present invention is an improved electrode array to maximize retinal response. The array of the present invention is an array with a center section with no electrode, surrounded by a ring of small high density electrodes. Electrodes beyond to ring are gradually larger and more widely spaced.