Abstract:
The present invention is concerned with the use of spectrophotometric methods, including the use of convention spectroscopic absorption or circular dichroism for clinical chemistry detection methods. More specifically, with the use of such spectrophotometric methods in the measurement of cholesterol levels and direct measurement of cholesterol subfractions in clinical samples, and in the measurement of lipoprotein levels in a clinical test sample, as well as in the detection of anabolic steroids and other steroid products. The invention is also concerned with providing certain CD and conventional spectrophotometric apparatus useful in each of the aforesaid chemical methods.
Abstract:
The present invention relates to DNA and proteins of human Adenovirus Type 41 and their use in detection of said virus. More specifically, the present invention relates to the isolation of a 41.4 kd short fiber protein and a 60.6 kd long fiber protein of Adenovirus Type 41 (Ad41), as well as protein derived from the Ad41 E3 region, thereby providing virus-derived antigens and active derivatives and parts thereof, useful in the development of diagnostic assays, DNA probes and vaccines for said virus or other related viruses belonging to the human enteric family.
Abstract:
This invention relates to compounds of the formula a compound of the formula wherein X is O, CR7R8, S or NR9 wherein R7 and R8 are independently hydrogen, or lower alkyl, and R9 is lower alkyl; n is 0 or 1; R1 and R2 are independently hydrogen, lower alkyl, monoorganosilyl, diorganosilyl, triorganosilyl, halogen, aryl, or nitro; R3 is hydrogen, lower alkyl, monoorganosilyl, diorganosilyl, triorganosilyl, halogen, 9-fluorenylalkyl, cycloalkyl, aryl or aralkyl; R4 and R5 are independently hydrogen, lower alkyl, or aryl or one of R4 and R5 is 9-fluorenyl; R6 is H or COZ wherein Z is an amino acid, a peptide residue or a leaving group; and with the provisos that when n is 0 and R3 is hydrogen, R1 and R2 are not hydrogen, halogen or nitro; that when n is 0 and R3 is lower alkyl, R1 and R2 are not hydrogen; and that when X is O or CR7R8 wherein R7 and R8 are H, that R1, R2, R3, R4, R5, and R6 are not all simultaneously H. The compounds of the present invention are useful in peptide synthesis as blocking or protecting groups for reactive groups. The present invention is also directed to a method of protecting a reactive group of an organic molecule during a reaction which modifies a portion of the molecule other than the protected group.
Abstract:
Methods and apparatus provided with selected nanoparticles that exhibit the plasmon resonance effect to enhance photoprocesses. In a first embodiment, such nanoparticles are used in a method of forming an integrated circuit; and in additional embodiments, the nanoparticles are used to increase the catalytic effect of a metal catalyst to increase the rate at which molecules absorb light, to accelerate the reduction of carbon dioxide to formic acid, to accelerate the decomposition of pollutants, and to accelerate the reaction of two reactants to produce a fuel. Additional embodiments utilize the plasmon resonance effect to enhance the effect of solar energy on a solar responsive electrode of a photochemical battery, and to inhibit the passage of ultraviolet light through a sunscreen. Also, in accordance with the present invention, nanoparticles that exhibit the plasmon resonance effect are used to improve a test for a solution for a bio-agent, and to develop fingerprints on a surface.
Abstract:
The present invention relates to DNA markers and, particularly, nucleic acid labeling techniques. More specifically, this invention contemplates a protocol which permits the covalent introduction of single or multiple fluorescent markers or other probes into DNA fragments and oligodeoxynucleotides. The instant technique, particularly employing multiple fluorescent markers, allows high sensitivity detection of nucleic acids (without the use of sophisticated detection devices) in the low femtomolar (10 mol) range and additionally permits the placement of markers and probes at specific locations within the macromolecule. The present invention can be used with high detection sensitivity for DNA sequencing and hybridization procedures including a host of diagnostic and therapeutic procedures. The present technique can be employed as a tool for the study of nucleic acid dynamics through recognition and evaluation of fluorescence energy transfer and electron spin resonance, and the study of structure, conformation and dynamics of biopolymers. Specific labeling procedures allow the introduction of a probe or other entity for the location of desired sequences or the delivery of the probe to a specific sequence. This process is fundamental to the emerging fields of DNA diagnostics and therapeutics.
Abstract:
The present invention relates to a novel virus, said virus belonging to the HIV-2 family of viruses. In particular, the invention relates to a retrovirus characterized by being antigenically more similar to, but genetically distinct from, HIV-2/ROD and SIVMAC than to HIV-1. More particularly, the present invention relates to the isolation and cultivation of HIV-2/ST thereby providing a source of said virus and its derivatives including virus-derived antigens and derivatives and parts thereof, useful in the development of diagnostic assays for said virus or other related viruses belonging to the HIV-2 family. Furthermore, the present invention is also directed to recombinant DNA molecules containing the entire HIV-2/ST provirus thereby providing a source of recombinant viral components useful in the development of said diagnostic assays for HIV-2 viruses. The present invention is also directed to antibodies specific to viral components and to different antibodies specific to the first antibodies, said antibodies are also useful in the development of diagnostic assays for HIV-2 viruses. The present invention also contemplates a method of the isolation of HIV-2/ST-type viruses.
Abstract:
A composition for skin disorders comprising dimethyl isosorbide. It has been found that dimethyl isosorbide has a dermal penetrating action which can effectively carry it to the source of a skin disorder and that it has antifungal, antiviral and antibacterial effects which make it effective in the treatment of a wide range of skin disorders.
Abstract:
The present invention provides fluorescent nucleosides carrying polycyclic aromatic hydrocarbons such as anthracene, phenanthrene, pyrene, stilbene, tetracene or pentacene. The subject nucleosides may be synthesized using a C-glycosidic bond formation method employing organocadium or organozinc derivatives of the aromatic compounds and coupling with a 1- alpha -chlororibose or deoxyribose synthon. The alpha -anomers of the coupling reaction may be epimerized to the beta -anomers by acid-catalyzed equilibration. The fluorescent nucleosides act as a DNA or RNA base analogs and can be incorporated into nucleic acids. Resultant fluorescently tagged nucleic acids are useful as probes for target nucleic acids in tissues, solutions or immobilized on membranes.
Abstract:
An apparatus and method for directing a light beam onto a moving article. The apparatus comprises first and second mirrors for directing the light beam in an adjustable direction, first and second motors connected to the first and second mirrors to move those mirrors, and a tracking system connected to the first and second motors to operate those motors to move the first and second mirrors to maintain the light beam directed at the article as the article moves. Preferably, the tracking system includes coarse and fine tracking subsystems. The coarse tracking subsystem is used to operate the motors to move the mirrors to direct the light beam approximately onto the article, and the fine tracking subsystem is used to operate the motors to operate the mirrors to direct the light beam substantially directly onto the article.
Abstract:
The invention provides a method for imparting resistance in animals to viruses, and in plants to viruses and viroids, that express double-stranded RNA-like structures (dsRNAs). This method enables the binding of pathogenic dsRNAs during the infection process by expression of dsRNA-binding protein in transgenic animal and plant hosts, thus interrupting the infection cycle and inhibiting disease. The presence of a dsRNA-binding protein in a transgenic host renders the transgenic host resistant to the phenotypic symptoms of viral infection and/or decreased pathogen replication. Accordingly, the present invention provides a genetically engineered animal and plant, stably transformed to express a dsRNA-binding protein, such that the transgenic host displays resistance to virus and/or viroid challenge.