摘要:
The present invention relates to novel alternative forms of human acetylcholinesterase (AChE) and nucleotide sequences encoding the same. The genes encoding the novel forms of human AChE have been identified in various malignant tumor cells. In a further aspect, the invention relates to a transgenic animal assay system for evaluating efficacy of drugs against cholinergic proteins, prior to or in the course of therapeutic treatment. Transgenic animals, preferably developing tadpole of Xenopus or mice which express human AChE, are used. The transgenic animal assay system is also useful for evaluating the toxicity of substances which potentially block human AChE (e.g. organophosphorous compounds).
摘要:
The present invention provides a transgenic animal assay system which provides a model system for testing for, and treatment of, cholinergic deficits and imbalances in mammals such as cognitive functioning in Alzheimer's patients, certain types of retinal photoreceptor degeneration, hematopoietic disorders, and screening for and susceptibility to anti-cholinesterase compounds. The transgenic animals and progeny thereof are transformed with a recombinant expression vector of the present invention. The recombinant expression vector comprises a DNA sequence encoding a heterologous cholinesterase (ChE) enzyme and promoter.
摘要:
The present invention relates to novel alternative forms of human acetylcholinesterase (AChE) and nucleotide sequences encoding the same. The genes encoding the novel forms of human AChE have been identified in various malignant tumor cells. In a further aspect, the invention relates to a transgenic animal assay system for evaluating efficacy of drugs against cholinergic proteins, prior to or in the course of therapeutic treatment. Transgenic animals, preferably developing tadpole of Xenopus or mice which express human AChE, are used. The transgenic animal assay system is also useful for evaluating the toxicity of substances which potentially block human AChE (e.g. organophosphorous compounds).
摘要:
The present invention provides DNA constructs comprising a promoter DNA sequence and a DNA sequence coding for human serum albumin. In one embodiment the human serum albumin sequence comprises at least one, but not all, of the introns in the naturally occurring gene encoding for the HSA protein. In another embodiment the DNA constructs comprise a 5' regulatory sequence which directs the expression and secretion of HSA protein in the milk of a transgenic animal. Preferably, the promoter gene is a milk protein promoter sequence such as .beta.-lactoglobulin. The present invention also provides transgenic animals which secrete HSA in the milk of lactating females. The present invention also provides vectors comprising the constructs of the present invention.
摘要:
A quantitative trait locus (QTL) affecting milk fat and protein concentration was localized to a 4cM confidence interval on chromosome 6 centered on the microsatellite BM143. The genes and sequence variation in this region were characterized, and common haplotypes spanning five polymorphic sites in the genes IBSP, SPP1, PKD2, and ABCG2 for two sires heterozygous for this QTL were localized. Expression of SPP1 and ABCG2 in the bovine mammary gland increased from parturition through lactation. SPP1 was sequenced, and all the coding exons of ABCG2 and PKD2 were sequenced for these two sires. The single nucleotide change capable of encoding a substitution of tyrosine-581 to serine (Y581S) in the ABCG2 transporter was the only polymorphism corresponding to the segregation status of all three heterozygous and 15 homozygous sires for the QTL in the Israeli and US Holstein populations.
摘要:
Devices for arresting a wheeled vehicle with rubber tires, comprising elongated flexible member (11) such as strips, mats, cables or chains disposed along the direction of motion and adapted to wrap around the tires using a tire attaching means (14) such as barb, spike or adhesive, the tire attaching means being fixed to the proximal end of the flexible member with respect to the vehicle's motion, and an arresting means (16) such as a rod attached to the distal end of the flexible member and adapted to interfere with the vehicle motion. The spikes may be anchoring in the tire and the cable or chain may be strong enough to tear the tires. The devices may be disposed in a flat housing with movable cover for allowing free passage of the vehicle.
摘要:
An expendable, stand-alone, off-board Electronic Counter-Measure system, airborne RF decoy aimed to provide airborne platforms with protection against multiple radar-based threats including Air-to-Air and Surface-to-Air missiles both active and semi-active ones. The airborne RF decoy has the mechanical outline of standard chaff and flare decoys and is safely ejected from any platform by pyrotechnic elements.The airborne RF decoy deceives enemy radar-based threats as follows: immediately after its ejection from the protected airborne platform, the decoy activates an energy source, stabilizes its path, acquires illuminating signals and analyzes threat parameters. Then the decoy alters the received signals to generate an authentic false target and transmits a deceiving signal towards the radar threat. The radar threats locks on the decoy and follow its path. Thus the threat course is diverted from the protected airborne platform and a large miss distance of the attacking missile (tens to hundreds of meters) is assured.
摘要:
An expendable, stand-alone, off-board Electronic Counter-Measure system, airborne RF decoy aimed to provide airborne platforms with protection against multiple radar-based threats including Air-to-Air and Surface-to-Air missiles both active and semi-active ones. The airborne RF decoy has the mechanical outline of standard chaff and flare decoys and is safely ejected from any platform by pyrotechnic elements. The airborne RF decoy deceives enemy radar-based threats as follows: immediately after its ejection from the protected airborne platform, the decoy activates an energy source, stabilizes its path, acquires illuminating signals and analyzes threat parameters. Then the decoy alters the received signals to generate an authentic false target and transmits a deceiving signal towards the radar threat. The radar threats locks on the decoy and follow its path. Thus the threat course is diverted from the protected airborne platform and a large miss distance of the attacking missile (tens to hundreds of meters) is assured.
摘要:
A quantitative trait locus (QTL) affecting milk fat and protein concentration was localized to a 4cM confidence interval on chromosome 6 centered on the microsatellite BM143. The genes and sequence variation in this region were characterized, and common haplotypes spanning five polymorphic sites in the genes IBSP, SPP1, PKD2, and ABCG2 for two sires heterozygous for this QTL were localized. Expression of SPP1 and ABCG2 in the bovine mammary gland increased from parturition through lactation. SPP1 was sequenced, and all the coding exons of ABCG2 and PKD2 were sequenced for these two sires. The single nucleotide change capable of encoding a substitution of tyrosine-581 to serine (Y581S) in the ABCG2 transporter was the only polymorphism corresponding to the segregation status of all three heterozygous and 15 homozygous sires for the QTL in the Israeli and US Holstein populations.