Abstract:
The present invention relates to injectable compositions comprising biocompatible, swellable, substantially hydrophilic, non-toxic and substantially spherical polymeric material carriers which are capable of efficiently delivering bioactive therapeutic factor(s) for use in embolization drug therapy. The present invention further relates to methods of embolization gene therapy, particularly for the treatment of angiogenic and non-angiogenic-dependent diseases, using the injectable compositions.
Abstract:
The present invention contemplates various devices that are configured to separate a sample, which contains more than one unique species, into any desired number of sub-samples by passing the sample across a like number of separation media configured for a first separation protocol. Each of the sub-samples may be further separated by an additional separation protocol, thereby creating a plurality of mini-samples, each of which may be further separated and/or analyzed. The invention also contemplates using a simple method of using conduits to form a fluid path that passes through a plurality of separation media, each of which media is configured to isolate a particular sub-sample. After various sub-samples of the sample are isolated by the various separation media, the conduits may be removed, thereby enabling each of the isolated sub-samples to be further separated and/or analyzed independent of any other sub-sample.
Abstract:
A mass spectrometer probe is formed of a nonconductive polymer that is doped with conductive material. The probe may be used as, or as part of, a repeller plate in a parallel laser ion desorption/ionization time-of-flight mass spectrometer. Transparent locations on the probe enable a sample placed thereon to be visualized before or during mass spectrometry. The conductive nature of the probe maintains the consistency of the electromagnetic field applied to the sample. The probe also displays low outgassing and high mechanical and chemical stability, thereby enabling it to be used repetitively.
Abstract:
This invention provides chelating moieties that comprise an aryl group. Monomers that include the chelating moieties can be polymerized into chelating polymers. Chelating polymers are useful to chelate metals. Chelating polymers in the form of metal chelates are useful for binding analytes, such as polypeptides that comprise histidine residues. Chelating polymers can be includes in articles such as chips and chromatographic materials.
Abstract:
The present invention relates to injectable compositions comprising biocompatible, swellable, substantially hydrophilic, non-toxic and substantially spherical polymeric material carriers which are capable of efficiently delivering bioactive therapeutic factor(s) physically linked to a transfection agent for use in embolization gene therapy. The present invention further relates to methods of embolization gene therapy, particularly for the treatment of angiogenic and non-angiogenic-dependent diseases, using the injectable compositions., using the injectable compositions.
Abstract:
The present invention relates to injectable compositions comprising biocompatible, swellable, hydrophilic, non-toxic and substantially spherical microspheres microspheres and a biocompatible carrier for use in dermal augmentation. The present invention further relates to methods of dermal augmentation, particularly for the treatment of skin contour deficiencies, using the injectable compositions.
Abstract:
Tridimensional cross-linked random copolymers, insoluble in water, containing in copolymerized form: (a) 25% to 98% by weight of N-[tris(hydroxymethyl)methyl]acrylamide or N-[tris(hydroxymethyl)methyl]methacrylamide, or a mixture of these two compounds. (b) 2% to 50% by weight of one or more monomers containing two or several polymerizable ethylenic double bonds and free from anionic or cationic functional groups, and (c) 0.1% to 50% by weight of one or more monomers containing a polymerizable ethylenic double bond and one or more mono- or di-substituted amino, pyrimidinyl, guanidyl, purinyl, quaternary ammonium, SO.sub.3 H or SO.sub.3 M groups, M being an alkali metal. These copolymers are utilizable, in the form of aqueous gels, as ion exchangers.
Abstract:
Water-insoluble, tridimensional cross-linked random copolymers, which contain in copolymerized form:(a) 25% to 98% by weight of N-[tris(hydroxymethyl)methyl]acrylamide or N-[tris(hydroxymethyl)methyl]methacrylamide or a mixture of these two compounds;(b) 2% to 50% by weight of one or more monomers having several polymerizable ethylenic double bonds and one or more hydroxy groups, and free from NH.sub.2 or COOH groups; and(c) 0% to 50% by weight of one or more monomers having a polymerizable ethylenic double bond and one or more amino or carboxy groups. These copolymers may be used, in the form of aqueous gels, as supports in techniques of separation such as gell permeation chromatography and in techniques of immobilization of natural substances.
Abstract:
A process for preparing plates of a new gel polymer, said plates being adapted to the electrophoresis separation of the seric or plasmatic lipoproteins under a stepped gradient. The gel polymers are prepared by radical polymerization of N-methylol-acrylamide and of a bifunctional allylic or acrylic compound causing cross-linking to yield a tridimensional configuration polymer. The polymerization may optionally be catalyzed by peroxides and/or ultraviolet radiation. Anionic polysaccharides containing only COOH groups may be added to assist migration of lipoproteins in the gel.
Abstract:
The invention relates to a method for immobilizing nucleic ligands including at least one reactive amine function, by grafting on an activated solid substrate, including a step of coupling said nucleic acids on said activated solid substrate having a pH of less than 6.