摘要:
The phospholipid bilayer contains at least one pharmaceutically active drug and comprises cell-specific markers on the membrane which have at least 90% biological activity when measured according to Luescher & Glueck, Antiviral Research 14, 39-50. In the membrane, the cholesterol content is preferably less than 2% by weight, the detergent content preferably less than 1 ppb. The vesicle diameter preferably is about 80 nm. the phospholipid in the membrane may comprise 70 to 95% by weight of phosphatidylcholine and preferably 10 to 20% by weight of phosphatidylethanolamine; preferably 6-8% by weight of a crosslinker, preferably of a sulfosuccinimidyl derivate, and at least one cell-specific fusion peptide are linked to the membrane. The vesicles are used for the preparation of pharmaceuticals against AIDS and carcinomas.
摘要:
The present invention relates to a positively charged virosome for efficient delivery of genetic material to resting or proliferating mammalian cells in vitro and in vivo. The virosome membrane contains cationic and/or polycationic lipids, at least one viral fusion peptide and preferably at least one cell-specific marker, advantageously selected from the group consisting of monoclonal antibodies, antibody fragments F(ab′)2 and Fab′, cytokines, and growth factors, for a selective detection and binding of target cells. The invention further relates to a method for the manufacture of the novel virosomes and to applications thereof, particularly for the manufacture of pharmaceutical compositions to treat cancer or leukemia.
摘要:
A method is provided for preparing a highly purified lysozyme dimer product which comprises dimerizing the lysozyme monomer with a suberimidate coupling reagent in a buffer solution adjusted to pH 10, stopping the dimerization at a given point by lowering the pH to 7 via addition of HCl or other suitable acid solution, and purifying the dimeric lysozyme by a series of elution steps carried out using ion exchange resin column chromatography. Monomeric lysozyme remaining undimerized by the initial dimerization step is recycled into the process in order to increase yield. The present system is advantageous in that large amounts of purified lysozyme dimer can be prepared efficiently and relatively inexpensively, and the lysozyme dimer so produced is useful in treating viral and/or bacterial diseases without causing the cytotoxic effects associated with the lysozyme monomer.
摘要:
A method is provided for preparing a highly purified lysozyme dimer product which comprises dimerizing the lysozyme monomer with a suberimidate coupling reagent in a buffer solution adjusted to pH 10, stopping the dimerization at a given point by lowering the pH to 7 via addition of HCl or other suitable acid solution, and purifying the dimeric lysozyme by a series of elution steps carried out using ion exchange resin column chromatography. Monomeric lysozyme remaining undimerized by the initial dimerization step is recycled into the process in order to increase yield. The present system is advantageous in that large amounts of purified lysozyme dimer can be prepared efficiently and relatively inexpensively, and the lysozyme dimer so produced is useful in treating viral and/or bacterial diseases without causing the cytotoxic effects associated with the lysozyme monomer.
摘要:
A system for measuring golf club parameter data on impact of a club face of a user's golf club with a target surface includes a static impact bag having a front facing surface for receiving an impact thereon with the club face, and a plurality of sensors for detecting force data upon impact of the club face with the front facing surface. The system includes a processor connected to sensors for receiving the force data and determining golf club parameter data related to the club face's impact with the front surface of the bag.
摘要:
The invention relates to a method for producing biperiden by reacting exo-1-(bi-cyclo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone with a phenylmagnesium compound. According to the invention, exo-1-(bi-cyclo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone can be obtained by reacting the exo-ether of enol silylene of formula (IV) with a compound of N-methylenepiperidinium.
摘要:
A tonneau cover is arranged to mount on the truck box of a conventional pick up truck for enclosing the box. The cover comprises a pair of panels which are pivotally mounted on respective sides of the box. The panels extend laterally inward such that free ends of the panels engage each other in a closed position. The panels may be pivoted upward and secured in an upward orientation by a pair of rails connected between the free ends of the respective panels in an extended position of the panels. The panels form a pair of side walls in the extended position for supporting large cargo in the box. The rails form a rack in the extended position for supporting additional cargo thereon. A locking device secures the panels in the closed position while a plurality of struts provides additional support to the panels when pivoting the panels between the closed and extended positions.
摘要:
In an interface circuit for connection to an output of a frequency converter, at least two current paths are coupled to one another in parallel. Each current path includes at least one cascode stage for signal processing. The circuit compensates for DC voltage offsets of the frequency converter, and has a gain ratio that can be changed over for signals with a large dynamic range.
摘要:
In an interface circuit for connection to an output of a frequency converter, at least two current paths are coupled to one another in parallel. Each current path includes at least one cascode stage for signal processing. The circuit compensates for DC voltage offsets of the frequency converter, and has a gain ratio that can be changed over for signals with a large dynamic range.
摘要:
The invention relates to a method for the production of biperiden by reacting an exo/endo mixture of 1-(bicyclo[2.2.1.]hept-5-en-2-yl) 3-piperidino-1-propanone with a phenyl magnesium compound, wherein the exo/endo ratio of 1-(bicylo[2.2.1]hept-5-en-2-yl)-3-piperidino-1-propanone is at least 4.5:1.