摘要:
A system for reducing central sleep apnea (CSA) is described in which certain methods of increasing a patient’s rebreathing during periods of the sleep cycle are used. By increasing rebreathing during periods of overbreathing, the over-oxygenation which typically results from the overbreathing period can be reduced, thus reducing the compensating underbreathing period and effectively reducing the loop gain associated with the central sleep apnea. Nasal occlusion and a leak resistant oral interface provide control for gas leaks from a patent interface.
摘要:
Biofilm forming organisms are incubated to form a biofilm on projections by providing a flow of liquid growth medium across projections, the direction of the flow of liquid being repeatedly changed, and an assay made of the resulting biofilm. Biofilm forming organisms are incubated to form a biofilm on projections arranged in rows, with several projections in each row, while providing a flow of liquid growth medium across each row of projections, and an assay made of the resulting biofilm. Sensitivity of the biofilm to antimicrobial reagent may be determined by treating the projections with antimicrobial reagent before carrying out the assay, by treating each row of projections with a different antimicrobial reagent, and each of the projections in a row with a different concentration of antibacterial reagent. A biofilm assay device includes a vessel including at least one channel for flow of liquid growth medium, projections arranged in at least one row and having a support for supporting the projections within the channel, and a tilt table to flow liquid growth medium along each channel in different directions across the projections. A further biofilm assay device includes a vessel including channels for flow of liquid growth medium, projections arranged in rows and having a support for supporting the projections within the channels, and a rocking table to rock the vessel and flow liquid growth medium along each channel across the projections.
摘要:
A new use of epidermal growth factor (EGF) for preparing an agent for increasing weight gain in an animal is described. The agent is preferably formulated as a food additive or drinking water additive and administered in the feed of the animal. Another use of EGF is for preparing a medicament for treating malnourished people and persons suffering from anorexia nervosa. As such EGF can be used to increase animal production, for example in the agriculture or aquaculture industry.
摘要:
A novel approach for combining the ease of cleavage of carboxylic acid linker arms with the single phosphoramidite coupling chemistry of the universal supports useful in oligonucleotide synthesis. There is disclosed a new class of phosphoramidite reagents, linker phosphoramidites, which contain a bifunctional linker arm with a protected nucleoside linked through a 3'-ester bond on one end and a reactive phosphoramidite group or other phosphate precursor group on the other end. The phosphoramidite group on the linker phosphoramidite may be activated under the same conditions and has similar reactivity as conventional nucleoside-3'-phosphoramidite reagents lacking the intermediate linker arm. The 3'-ester linkage contained within the linker phosphoramidite has similar properties to the linkages on prederivatized supports. The ester linkage is stable to all subsequent synthesis steps, but upon treatment with a cleavage reagent, such as ammonium hydroxide, the ester linkage is hydrolyzed. This releases the oligonucleotide product with the desired 3'-hydroxyl terminus and leaves the phosphate portion of the reagent attached to the support, which is subsequently discarded.
摘要:
The invention provides vaccines and methods for preventing or treating intestinal protozoal infections in an animal. In particular, vaccines and methods for prevention or treatment of giardiasis are provided. The invention also encompasses methods of preparing and methods of use of novel toxins, antibodies, vaccine strains and compositions that result from or are used in these methods.
摘要:
A solid support for oligonucleotide synthesis is disclosed. The solid support has formula (1) wherein: R8 is selected from the group consisting of a substituted or unsubstituted C¿1?-C20 alkyl group, a substituted or unsubstituted C5-C30 aryl group and a substituted or unsubstituted C5-C40 alkylaryl group; X?3 and X4¿ are the same or different and are selected from the group consisting of -O-, -S-, -S(O)¿2?- and -N(R?12)-; R12¿ is selected from the group consisting of a substituted or unsubstituted C¿1?-C20 alkyl group, a substituted or unsubstituted C5-C30 aryl group and a substituted or unsubstituted C5-C40 alkylaryl group; and Y is selected from the group consisting of: -CH2-CH2-; -CH2-; -CH2-O-CH2-; -CH2-CH2-CH2-; -CH=CH-; -CH=C(CH3)-; -C(CH3)=C(CH3)-; -CH2-C(=CH2)-; and -CH2-S-CH2-; wherein when Y is -CH2-CH2-, at least one of X?3 and X4¿ is -O-. An aspect of the invention also relates to a linker arm for oligonucleotide synthesis based on the solid support. Process for producing of the solid support and the linker arm, respectively, are also disclosed. The linker arm is characterized by being reusable in an otherwise conventional oligonucleotide production protocol.
摘要:
A photocatalyst compound comprising: (i) a photocatalyst selected from the group consisting of TiO2, WO3 and mixtures thereof, the photocatalyst being substantially free of sharp, narrow band X-ray reflections at angles corresponding to those of crystalline TiO2, WO3 and mixtures thereof, and (ii) a porous, crystalline, adsorbent support material. A process for producing the photocatalyst compound is also disclosed. The process comprises: (i) hydrolysing a non-ionic titanium compound to produce a colloidal suspension having an average particle size of less than about 250 Å; (ii) contacting a porous, crystalline, adsorbent support material with the colloidal suspension to produce an impregnated support; and (iii) calcining the impregnated support to produce the photocatalyst compound. The photocatalyst compound is useful, inter alia, in the treatment of a fluid containing an organic pollutant.
摘要:
Methods and compositions for use therein are described for expressing a polypeptide of interest in a seed cell as a fusion protein with an oil body protein. By this means, the fusion protein is targeted to the oil bodies of a seed cell. The oil body is easily separated from other cellular material following lysis of the seed cell, for example by using the partitioning/surface properties of the oil body. The fusion protein may be isolated for example by affinity chromatography using antibodies directed to the oil body protein. Where desired, the polypeptide of interest can be recovered by treatment of the fusion protein with for example a protease capable of recognizing a proteolytic recognition site in the oil body protein proximal to the N-terminus of the polypeptide of interest.