Process for the quantitative selective removal or preparative isolation of tumour necrosis factor (TNF) or/and lipopolysaccharides (LPS) from aqueous liquids
First Claim
1. A process for the selective removal of tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS) from a patient'"'"'s body fluids by extracorporeal perfusion, comprising the steps of:
- a) passing a body fluid over an adsorption material, andb) then returning said body fluid to said patient,wherein said adsorption material comprises a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of biological polycarboxylic acids and polysulfonic acids.
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Abstract
For the quantitative selective removal or/and preparative isolation of tumour necrosis factor (TNF) or/and lipopolysaccharides from aqueous liquids, in particular blood, plasma or serum, the aqueous liquid is passed over an adsorption material which consists of a porous supporting material to which functional groups made of synthetic or/and semisynthetic or/and natural polyanion chains and namely in a linear or branched form, are covalently bound and if desired, the molecules chromatographically separated in this way are eluted from the adsorption material using a saline solution. A device according to the present invention for the extracorporeal removal of tumour necrosis factor and/or lipopolysaccharides (LPS) from aqueous liquids, in particular blood, plasma or serum, consists of a cylindrical housing which is filled with an adsorption material which consists of a porous supporting material to which functional groups made of synthetic or/and semisynthetic or/and natural polyanion chains and namely in a linear or branched form, are covalently bound and is provided with covers at its front ends which each have a central inlet and outlet.
65 Citations
24 Claims
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1. A process for the selective removal of tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS) from a patient'"'"'s body fluids by extracorporeal perfusion, comprising the steps of:
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a) passing a body fluid over an adsorption material, and b) then returning said body fluid to said patient, wherein said adsorption material comprises a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of biological polycarboxylic acids and polysulfonic acids. - View Dependent Claims (2, 3, 4, 5)
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6. A process for the isolation of tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS) from a patient'"'"'s body fluids by extracorporeal perfusion, comprising the steps of:
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a) passing a body fluid over an adsorption material, b) then returning said body fluid to said patient, and c) eluting any TNF and/or LPS from said adsorption material using a 0.5 to 2.0 molar sodium chloride solution, wherein said adsorption material comprises a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of synthetic polyanion chains, semisynthetic polyanion chains and natural polyanion chains.
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7. A process for the selective removal of tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS) from a patient'"'"'s body fluids by extracorporeal perfusion, comprising the steps of:
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a) passing a body fluid through a plasma fractionation filter, wherein said plasma fractionation filter is impermeable to fibrinogen and LDL, b) then passing said body fluid over an adsorption material, and c) then returning said body fluid to said patient, wherein said adsorption material comprises a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of synthetic polyanion chains, semisynthetic polyanion chains and natural polyanion chains. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for the determination of the concentration of tumor necrosis factor in a body fluid, comprising the steps of:
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a) passing a body fluid over an adsorption material, b) eluting any TNF from said adsorption material using a 0.5 to 2.0 molar sodium chloride solution, and c) determining the concentration of any tumor necrosis factor eluted from said adsorption material as an indication of the concentration of tumor necrosis factor in said body fluid, wherein said adsorption material comprises a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of synthetic polyanion chains, semisynthetic polyanion chains and natural polyanion chains.
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16. Device for the extracorporeal removal of tumor necrosis factor (TNF) and lipopolysaccharides (LPS) from body fluids, comprising a plasma fractionation filter which is impermeable to fibrinogen and LDL;
- in combination with a cylindrical housing with covers at both ends, wherein said covers have a central inlet and outlet and wherein said cylindrical housing is filled with an adsorption material comprising a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of synthetic polyanion chains, semisynthetic polyanion chains and natural polyanion chains.
- View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method for the extracorporeal removal of tumor necrosis factor and lipopolysaccharides from body fluids, comprising:
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a) passing a body fluid through a device unit comprising two cylindrical housings, each with covers at both ends, wherein said covers have a central inlet and outlet and wherein said cylindrical housings are filled with an adsorption material comprising a porous supporting material covalently bound to linear or branched functional groups selected from the group consisting of biological polycarboxylic acids and polysulfonic acids, b) alternately perfusing the two cylindrical housings of the device unit with the body fluid to be treated, and c) rinsing the cylindrical housing which is not being perfused and which is saturated with tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS) with a regeneration solution to elute bound tumor necrosis factor (TNF) and/or lipopolysaccharides (LPS). - View Dependent Claims (24)
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Specification