Method for preparing peritoneal dialysate
First Claim
1. A method for preparing a peritoneal dialysate having a reduced carbonyl compound content, the method comprising:
- (a) contacting the peritoneal dialysate with a surface having immobilized thereon a carbonyl compound-trapping agent; and
(b) separating the peritoneal dialysate from the surface having the carbonyl compound-trapping agent immobilized thereon;
wherein said carbonyl compound-trapping agent is selected from the group consisting of guanidine derivatives, hydrazine derivatives, 5-membered heterocyclic compounds having 2 nitrogen atoms, 5-membered heterocyclic compounds having 3 nitrogen atoms, 5-membered heterocyclic compounds having a nitrogen atom and a sulfur atom, 5-membered heterocyclic compounds having a nitrogen atom and an oxygen atom, nitrogen-containing 6-membered heterocyclic compounds, nitrogen-containing condensed heterocyclic compounds, sulfur and nitrogen-containing condensed heterocyclic compounds, sulfur-containing condensed heterocyclic compounds, oxygen-containing condensed heterocyclic compounds, nitrogenous compounds, quinones, aliphatic dicarboxylic acids, silicides, organogermanes, alkylamines, aromatic compounds, polypeptides, vitamins, SH group-containing compounds, SH group-containing proteins, biguanide agents, ion exchange resins, and inorganic compounds.
2 Assignments
0 Petitions
Accused Products
Abstract
Carbonyl compounds generated and accumulated in the peritoneal dialysate can be inactivated or eliminated by a carbonyl compound-trapping agent such as aminoguanidine. Carbonyl compounds generated during sterilization and storage of the peritoneal dialysate can be eliminated by pre-contacting with the trapping agent. Further, it is possible to eliminate carbonyl compounds transferred from the blood to the peritoneal cavity of the patient during peritoneal dialysis treatment, by adding the trapping agent to the peritoneal dialysate or by circulating the fluid through a carbonyl compound-trapping cartridge. Intraperitoneal protein modification by carbonyl compounds is inhibited by the present invention, thereby sufficiently reducing peritoneal disorders associated with peritoneal dialysis treatment.
-
Citations
32 Claims
-
1. A method for preparing a peritoneal dialysate having a reduced carbonyl compound content, the method comprising:
-
(a) contacting the peritoneal dialysate with a surface having immobilized thereon a carbonyl compound-trapping agent; and (b) separating the peritoneal dialysate from the surface having the carbonyl compound-trapping agent immobilized thereon; wherein said carbonyl compound-trapping agent is selected from the group consisting of guanidine derivatives, hydrazine derivatives, 5-membered heterocyclic compounds having 2 nitrogen atoms, 5-membered heterocyclic compounds having 3 nitrogen atoms, 5-membered heterocyclic compounds having a nitrogen atom and a sulfur atom, 5-membered heterocyclic compounds having a nitrogen atom and an oxygen atom, nitrogen-containing 6-membered heterocyclic compounds, nitrogen-containing condensed heterocyclic compounds, sulfur and nitrogen-containing condensed heterocyclic compounds, sulfur-containing condensed heterocyclic compounds, oxygen-containing condensed heterocyclic compounds, nitrogenous compounds, quinones, aliphatic dicarboxylic acids, silicides, organogermanes, alkylamines, aromatic compounds, polypeptides, vitamins, SH group-containing compounds, SH group-containing proteins, biguanide agents, ion exchange resins, and inorganic compounds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method, comprising the steps of:
-
passing a peritoneal dialysate through an adsorbent cartridge comprising an insoluble carbonyl compound-trapping agent; allowing the peritoneal dialysate to remain in contact with the carbonyl-compound-trapping agent for a period of time and under conditions so as to allow carbonyl compounds present in the peritoneal dialysate to bind to the carbonyl-compound trapping agent; and recovering peritoneal dialysate having a reduced carbonyl compound content as compared to peritoneal dialysate entering the adsorbent cartridge; wherein said carbonyl compound-trapping agent is selected from the group consisting of guanidine derivatives, hydrazine derivatives, 5-membered heterocyclic compounds having 2 nitrogen atoms, 5-membered heterocyclic compounds having 3 nitrogen atoms, 5-membered heterocyclic compounds having a nitrogen atom and a sulfur atom, 5-membered heterocyclic compounds having a nitrogen atom and an oxygen atom, nitrogen-containing 6-membered heterocyclic compounds, nitrogen-containing condensed heterocyclic compounds, sulfur and nitrogen-containing condensed heterocyclic compounds, sulfur-containing condensed heterocyclic compounds, oxygen-containing condensed heterocyclic compounds, nitrogenous compounds, quinones, aliphatic dicarboxylic acids, silicides, organogermanes, alkylamines, aromatic compounds, polypeptides, vitamins, SH group-containing compounds, SH group-containing proteins, biguanide agents, ion exchange resins, and inorganic compounds. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method, comprising the steps of:
-
(a) allowing peritoneal dialysate in a peritoneal cavity to contact a carbonyl compound-trapping agent; and (b) allowing the carbonyl compound-trapping agent to trap a carbonyl compound; wherein said carbonyl compound-trapping agent is selected from the group consisting of guanidine derivatives, hydrazine derivatives, 5-membered heterocyclic compounds having 2 nitrogen atoms, 5-membered heterocyclic compounds having 3 nitrogen atoms, 5-membered heterocyclic compounds having a nitrogen atom and a sulfur atom, 5-membered heterocyclic compounds having a nitrogen atom and an oxygen atom, nitrogen-containing 6-membered heterocyclic compounds, nitrogen-containing condensed heterocyclic compounds, sulfur and nitrogen-containing condensed heterocyclic compounds, sulfur-containing condensed heterocyclic compounds, oxygen-containing condensed heterocyclic compounds, nitrogenous compounds, quinones, aliphatic dicarboxylic acids, silicides, organogermanes, alkylamines, aromatic compounds, polypeptides, vitamins, SH group-containing compounds, SH group-containing proteins, biguanide agents, ion exchange resins, and inorganic compounds. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
-
-
26. A method for trapping a carbonyl compound in a peritoneal dialysate for peritoneal dialysis treatment, comprising the steps of:
-
(a) adding a carbonyl compound-trapping agent to peritoneal dialysate prior to dialysis treatment; and (b) allowing the carbonyl compound-trapping agent to trap a carbonyl compound; wherein said carbonyl compound-trapping agent is selected from the group consisting of guanidine derivatives, hydrazine derivatives, 5-membered heterocyclic compounds having 2 nitrogen atoms, 5-membered heterocyclic compounds having 3 nitrogen atoms, 5-membered heterocyclic compounds having a nitrogen atom and a sulfur atom, 5-membered heterocyclic compounds having a nitrogen atom and an oxygen atom, nitrogen-containing 6-membered heterocyclic compounds, nitrogen-containing condensed heterocyclic compounds, sulfur and nitrogen-containing condensed heterocyclic compounds, sulfur-containing condensed heterocyclic compounds, oxygen-containing condensed heterocyclic compounds, nitrogenous compounds, quinones, aliphatic dicarboxylic acids, silicides, organogermanes, alkylamines, aromatic compounds, polypeptides, vitamins, SH group-containing compounds, SH group-containing proteins, biguanide agents, ion exchange resins, and inorganic compounds. - View Dependent Claims (27, 28, 29, 30, 31, 32)
-
Specification