Abstract: The present invention provides methods and composition suitable for stabilizing cell-containing samples such as blood samples. The stabilizers used are primary or secondary carboxylic acid amides.

Abstract: The present invention provides methods and composition suitable for stabilizing cell-containing samples such as blood samples. The stabilizers used are primary or secondary carboxylic acid amides.

Abstract: The present invention relates to a method for the treatment of a biological material, comprising the steps i) providing a biological material, and ii) contacting the biological material with a first non-aqueous composition comprising: (a1) 10 to 90 vol. % methanol, and (a2) at least one additional additive, and (a3) optionally an acid. iii) transferring the biological material into a second composition (B) comprising up to 99 vol. % ethanol as well as to a new composition for preservation of a biological material usable in said method and the biological material resulting from this method, a method for the analysis of a treated biological material, various kits as well as the use of the composition in such a method.

Abstract: The present invention relates to a method for the treatment of a biological material, comprising the steps i) providing a biological material, and ii) contacting the biological material with a first non-aqueous composition comprising: (a1) 10 to 90 vol. % methanol, and (a2) at least one additional additive, and (a3) optionally an acid. iii) transferring the biological material into a second composition (B) comprising up to 99 vol. % ethanol as well as to a new composition for preservation of a biological material usable in said method and the biological material resulting from this method, a method for the analysis of a treated biological material, various kits as well as the use of the composition in such a method.

Abstract: The present invention pertains to a method for isolation and purification of nucleic acids from a stabilized sample or portion or fraction thereof, wherein the sample stabilization involved the use of at least one formaldehyde releaser and wherein the isolation of the nucleic acids from the stabilized sample or portion or fraction thereof involves the use of at least one cationic detergent during lysis.

Abstract: The present invention pertains to methods, uses, compositions and kits for treating RNA at conditions comprising a temperature of at least 70° C. and a pH of at least 8, preferably a pH of at least 9. It also pertains to methods, uses and compositions for stabilizing RNA at conditions comprising a temperature of at least 70° C. and a pH of at least 8, preferably a pH of at least 9. It based on the finding that RNA can be stabilized in the presence of ammonium sulfate. In particular, the present invention provides a method of processing RNA, comprising treating the RNA at conditions comprising a temperature of at least 70° C. and a pH of at least 8, preferably a pH of at least 9, in the presence of ammonium sulfate at a concentration of 10 mM or less.

Abstract: The present invention provides methods, compositions and devices for stabilizing the extracellular nucleic acid population in a cell-containing biological sample and for stabilizing the transcriptome of contained cells.

Abstract: The present invention provides methods, compositions and devices for stabilizing the extracellular nucleic acid population in a cell-containing biological sample and for stabilizing the transcriptome of contained cells.

Abstract: The present disclosure provides methods, compositions and devices for isolating virus particles and/or viral nucleic acids from body samples that were stabilized using a stabilizing composition comprising a formaldehyde releaser agent.

Abstract: The present invention provides methods and composition suitable for stabilizing cell-containing samples such as blood samples. The stabilizers used are primary or secondary carboxylic acid amides.

Abstract: The present invention provides methods, compositions and devices for stabilizing the extracellular nucleic acid population in a cell-containing biological sample and for stabilizing the transcriptome of contained cells.

Abstract: The present disclosure provides methods, compositions and devices for isolating virus particles and/or viral nucleic acids from body samples that were stabilized using a stabilizing composition comprising a formaldehyde releaser agent.

Abstract: The present invention pertains to a method for isolation and purification of nucleic acids from a stabilized sample or portion or fraction thereof, wherein the sample stabilization involved the use of at least one formaldehyde releaser and wherein the isolation of the nucleic acids from the stabilized sample or portion or fraction thereof involves the use of at least one cationic detergent during lysis.

Abstract: The present invention involves a process for the isolation of nucleic acids on surfaces by means of at least the following steps: charging of a surface from a given direction with nucleic acids; immobilization of the nucleic acids on the surface; release of the immobilized nucleic acids from the surface; and removal of the released nucleic acids essentially in the direction of charging. Preferably the loading takes place from the top.

Abstract: The present invention relates to a method for the treatment of a biological material, comprising the steps i) providing a biological material, and ii) contacting the biological material with a first non-aqueous composition comprising: (a1) 10 to 90 vol. % methanol, and (a2) at least one additional additive, and (a3) optionally an acid. iii) transferring the biological material into a second composition (B) comprising up to 99 vol. % ethanol as well as to a new composition for preservation of a biological material usable in said method and the biological material resulting from this method, a method for the analysis of a treated biological material, various kits as well as the use of the composition in such a method.

Abstract: New processes and equipment to isolate and purify nucleic acids on surfaces are provided. The invention focuses on processes which use surfaces, for example, porous membranes, on which the nucleic acids are immobilized in a simple manner from the sample containing the nucleic acids and can be released again by way of simple procedural steps, whereby the simple performance of the process according to the invention makes it possible to perform the processes specifically in a fully automatic manner. An additional aspect of the present invention focuses on binding the nucleic acids to an immobile phase, especially to a membrane, in such a way and manner, that they can be released without difficulty during an additional reaction stage from this phase and, if desired, can be used in other applications, such as restriction digestion, RT, PCR or RT-PCR, or in any of the suitable analyses or enzyme reactions mentioned in the disclosure.

Abstract: The present invention relates to new compositions for isolating and/or stabilizing nucleic acids in materials of biological origin. The compositions comprise as an essential ingredient a cationic compound of general formula Y+R1R2R3R4X? wherein Y may represent nitrogen or phosphorus R1, R2, R3 and R4 independently of one another may represent a branched or unbranched C1-C20-alkyl group and/or a C6-C20-aryl group as well as a C6-C26-aralkyl group and X? may represent an anion of an inorganic or organic, mono- or polybasic acid.

Abstract: The present invention relates to a method of stabilizing and/or isolating nucleic acids, wherein a biological sample containing nucleic acids is contacted with a cationic compound. The invention also relates to said cationic compound per se and to the use of said cationic compound in stabilizing and/or isolating nucleic acids. Furthermore, the invention relates to pharmaceutical compositions, diagnostic compositions, and to compositions used in research, which include cationic compounds or a complex being formed upon contact of said cationic compound with a nucleic acid.

Abstract: New processes and equipment to isolate and purify nucleic acids on surfaces are provided. The invention focuses on processes which use surfaces, for example, porous membranes, on which the nucleic acids are immobilized in a simple manner from the sample containing the nucleic acids and can be released again by way of simple procedural steps, whereby the simple performance of the process according to the invention makes it possible to perform the processes specifically in a fully automatic manner. An additional aspect of the present invention focuses on binding the nucleic acids to an immobile phase, especially to a membrane, in such a way and manner, that they can be released without difficulty during an additional reaction stage from this phase and, if desired, can be used in other applications, such as restriction digestion, RT, PCR or RT-PCR, or in any of the suitable analyses or enzyme reactions mentioned in the disclosure.

Abstract: A system for collection, stabilization, and preparing total DNA for direct purification from biological samples is provided.