摘要:
A method of increasing blood-brain barrier permeability of selected brain tissue in a subject in need thereof is carried out by: (a) parenterally administering to the subject stem cells that migrate to the brain tissue, the stem cells containing a recombinant nucleic acid, the recombinant nucleic acid comprising a nucleic acid encoding a barrier-opening protein or peptide operably associated with a heat-inducible promoter; and then (b) selectively heating the selected brain tissue sufficient to induce the expression of the barrier-opening protein or peptide in an amount effective to increase the permeability of the blood-brain barrier in the selected brain tissue. Nucleic acids, vectors, stem cells and compositions useful for carrying out such methods are also described.
摘要:
The present invention provides compositions and methods for wound healing and tissue regeneration. The compositions of the present invention comprise amniotic membrane of the placenta. In certain embodiments, the composition comprises amniotic membrane powder or solubilized amniotic membrane (SAM). In some aspects, the composition is cell-free and rich in cytokines, extracellular matrix proteins, and other components that improve tissue regeneration. In one aspect, the composition is a hydrogel scaffold that comprises amniotic membrane. The present invention reduces contraction and improves blood vessel development in regenerating tissue.
摘要:
An agent-based modeling system for predicting and/or analyzing brain behavior is provided. The system includes a computer processor configured to define nodes and edges that interconnect the nodes. The edges are defined by physiological interactions and/or anatomical connections. The computer processor further defines rules and/or model parameters that define a functional behavior of the nodes and edges. The computer processor assigns the nodes to respective brain regions, and the rules and/or model parameters are defined by observed physiological interaction of the nodes that are functionally and/or structurally connected by said edges of brain regions to thereby provide an agent-based brain model (ABBM) for predicting and/or analyzing brain behavior.
摘要:
Renal screening systems include a circuit configured to electronically analyze MRI image data of a subject to evaluate renal function and generate a renal-risk report for a plurality of different therapeutic agents based on renal responses to test doses of each of the agents.
摘要:
Methods and systems for correcting presbyopia using a surgical excimer laser include activating the laser once and transmitting a pre-defined three dimensional ablation profile to treat presbyopia based on the single activating step.
摘要:
Provided herein are keratin compositions (e.g., keratin gels, scaffolds, particulates, and the like) including a compound of interest, useful for release and/or delivery of the compound of interest (e.g., in vivo or in vitro). In some embodiments, the composition is a composition formulated for controlled release of the compound of interest.
摘要:
Provided herein are methods of culturing organized skeletal muscle tissue from precursor muscle cells by cyclically stretching and relaxing said muscle cells on a support in vitro for a time sufficient to produce said organized skeletal muscle tissue, including reseeding said organized skeletal muscle tissue by contacting additional precursor muscle cells to said organized skeletal muscle tissue on said solid support, and then repeating said step of cyclically stretching and relaxing said muscle cells in said support in vitro for time sufficient to enhance the density (i.e., increased number of nuclei and/or number of multinucleated cells) of said organized skeletal muscle tissue on said support.
摘要:
Provided herein are urine progenitor cells and methods for producing a culture of urine progenitor cells from a urine sample. The cells may be selected based upon the use of a selective cell medium, based upon morphology, and/or by selecting cell-specific markers. Also provided is an isolated urine progenitor cell that is c-kit positive and can differentiate into urothelium, smooth muscle, endothelium or interstitial cells. Methods of use of urine progenitor cells are provided, wherein cell are seeded onto a tissue scaffold are provided. Methods of treating a subject in need thereof are also provided, including providing a bladder tissue substrate that includes differentiated UPCs and transplanting the substrate into the patient. Finally, kits are provided that include a container suitable for the transport of a urine sample; media; one or more antibiotics; a package for holding said container, media, and antibiotics; and optionally, instructions for use.