Abstract:
Detectable markers that may be introduced into a cavity created by removal of a biopsy specimen to mark the location of the biopsy site so that it may be located in a subsequent medical/surgical procedure. The markers remain present in sufficient quantity to permit detection and location of the biopsy site at a first time point (e.g., 2 weeks) after introduction but clear from the biopsy site or otherwise not interfere with imaging of tissues adjacent the biopsy site at a second time point (e.g., 5-7 months) after introduction.
Abstract:
This invention provides a physiologically tolerable light imaging contrast agent compound having a molecular weight in the range 500 to 500000 and containing at least two chromophores having delocalized electron systems as well as at least one polyalkylene oxide (PAO) moiety having a molecular weight in the range 60 to 100000.
Abstract:
The invention relates to a method for performing retinal membrane removal, wherein a retinal membrane is stained using at least one vital dye. The invention further relates to a staining composition for use in said method.
Abstract:
Imaging agents containing hyaluronan (HA) and contrast agents. These imaging agents may include HA complexed with gadolinium, optionally with liposomes, and HA complexed with superparamagnetic iron oxides. A method of producing HA-based imaging agents includes mixing a solution of HA with a solution of contrast agent. A method of imaging using HA-based imaging agents includes using HA-based imaging agents to view cancer cells with magnetic resonance.
Abstract:
The invention relates to novel dye-polysaccharide- or -cyclosaccaride-conjugates and the utilization thereof as a diagnostic, especially for determining the glomerular filtration rate in humans.
Abstract:
A method of perlecan isolation (from the EHS tumor) which produces "clean" (i.e., substantially "pure") perlecan is disclosed. Clean perlecan is thus produced in sufficient quantities for use in a number of different in vitro and in vivo assays. In addition, this isolation method exploits a newly discovered aggregating property of a SIMILAR 220 kDa heparan sulfate proteoglycan (HSPG) observed during gel filtration chromatography, which allows it to be effectively separated from non-aggregating perlecan. The method employs specific cation exchange, anion exchange, molecular sieve chromatography and immobilized GAG affinity chromatography. It is demonstrated that there are no other contaminating proteins in the perlecan and HSPG preparations, and that the perlecan core protein is intact. Improved, clean perlecan based, rodent models of fibrillar amyloid protein deposition, accumulation and/or persistence in tissues are disclosed.
Abstract:
Disclosed are methods and compositions for identifying, monitoring and treating premalignant and malignant conditions in a human subject. The present invention further discloses methods and compositions for determining cells undergoing apoptosis, and for increasing the efficacy of a cancer therapy. The methods involve the use of apurinic/apyrimidinic endonuclease (APE), independently, as a marker for (pre)malignant conditions and for apoptosis. Also described are polyclonal antibody preparations for use in methods for detecting APE and methods for modulating expression susceptibility of cells to apoptosis.
Abstract:
Hydrogenated pyrido(4,3-b)indoles of general formula (I) in which R , R and R have the meanings indicated in the description and have the properties of NMDA-antagonists and are suitable for use in treating neuro-degenerative disorders, especially Alzheimer's disease.
Abstract:
An applicator device (5) is disclosed directed to the controlled placement of a minute amount of fluorescein (25) is used as a staining agent to permit applanation tonometric measurements. The fluorescein is applied with a disinfectant to the tonometer lens using a special applicator (5). The disinfectant (25) evaporates leaving a thin film residue on the lens, which is subsequently redissolved in the tear film above the cornea (15). The foregoing de vice enhances the tonometer measurements while simplifying the process and reducing risk of entry of infective contaminates into the eye region. The invention also provides a device for disinfecting such multiple use articles as combs, earring posts and wires for pierced skin, manicure instruments, contact lens (both corrective and diagnostic), and thermometers.
Abstract:
The present invention relates to dye molecules and to staining compositions comprising said dye molecules that are particularly suitable for selectively staining biological substrates, such as structures in the posterior eye segment and proteins. Said dye molecules may be used in ophthalmic surgery to help the surgeon to visualize structures in the posterior eye structures as well as in protein assays to determine one or more analytical parameter of a protein. The dye molecules have the following structure (I) wherein X represents an organic or inorganic cation; and R 1 represents a substituted or unsubstituted benzyl group. The present invention relates also to a new method for synthetizing dye molecules.