Adsorbent for removing histone and purification device for liquid derived from living organism

Patent metadata

Field	Value
Publication number	US-10639405-B2
Application number	US-201515327483-A
Country	US
Kind code	B2
Filing date	Jul 21, 2015
Priority date	Jul 22, 2014
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

Provided is an adsorbent for removing histones from a liquid derived from a living-organism, including a water-insoluble carrier and a biocompatible polymer. The carrier has activated carbon, a polyester, a polysulfone, or a cationic functional group. Also provided is a device for purifying a liquid derived from a living-organism to remove histones from a liquid derived from a living-organism, which has a housing equipped with an inlet and an outlet for the liquid derived from the living-organism and the above-described adsorbent housed in the housing. The liquid derived from the living-organism is moved through the housing of device for purifying the liquid derived from the living-organism to remove histones from the liquid derived from the living-organism.

First claim

What is claimed is:

1. A method for removing a histone from a liquid derived from a living-organism comprising contacting the liquid ex vivo with an adsorbent comprising a water insoluble carrier and a biocompatible polymer, the carrier being at least one selected from the group consisting of activated carbon, a polyester, and a polysulfone, or the carrier being modified with a cationic functional group, wherein in the contacting, the histone is adsorbed by the adsorbent to obtain a histone removed from the liquid.

2. The method according to claim 1 , wherein the biocompatible polymer comprises a cationic functional group.

3. The method according to claim 1 , wherein the carrier is in particle form, in non-woven fabric form, or in hollow fiber membrane form.

4. The method according to claim 1 , wherein the carrier is polyethylene terephthalate or a styrene divinylbenzene-based copolymer, the carrier being modified with the cationic functional group.

5. The method according to claim 4 , wherein the cationic functional group is an amino group.

6. The method according to claim 4 , wherein the cationic functional group is a quaternary ammonium group.

7. The method according to claim 1 , wherein the biocompatible polymer is a hydrophilic polymer.

8. The method according to claim 7 , wherein the hydrophilic polymer is a hydroxyethyl methacrylate-based polymer.

9. The method according to claim 1 , wherein the biocompatible polymer is a polymer containing 10 mol % or more of dimethylaminoethyl methacrylate.

10. The method according to claim 1 , wherein the histone is Histone H3.

11. The method according to claim 1 , wherein the adsorbent is housed in a housing and, in the contacting, the liquid is moved through the housing.

12. The method according to claim 11 , wherein the liquid is a body liquid.

13. The method according to claim 12 , wherein the body liquid is at least blood.

14. The method according to claim 11 , wherein the housing further comprises an inlet and an outlet, the inlet and the outlet being on opposite sides of the adsorbent in the housing, wherein, in the contacting, the liquid is moved through the inlet and the outlet.

15. A method for treating systemic inflammatory response syndrome in a subject in need of treatment thereof comprising:
contacting blood or plasma from the subject ex vivo with an adsorbent comprising a water insoluble carrier and a biocompatible polymer, the carrier being at least one selected from the group consisting of activated carbon, a polyester, and a polysulfone, or the carrier being modified with a cationic functional group, wherein the blood or plasma comprises a histone and, in the contacting, the histone is removed from the blood or plasma to obtain a blood or plasma having reduced histone content than the histone content of the blood or plasma prior to the contacting; and
infusing the subject with the blood or plasma having reduced histone content.

16. The method according to claim 15 , wherein the adsorbent is housed in a housing and, in the contacting, the blood or plasma is moved through the housing.

17. The method according to claim 16 , wherein the housing further comprises an inlet and an outlet, the inlet and the outlet being on opposite sides of the adsorbent in the housing, wherein, in the contacting, the blood or plasma is moved through the inlet and the outlet.

Assignees

• Asahi Kasei Medical Co Ltd

Inventors

• Kiriyama Kentaro
• Inoue Satoru
• Hatanaka Yoshihiro

Classifications

• A61M1/3679

  by absorption (A61M1/3675 takes precedence) · CPC title

• B01J20/3204

  Inorganic carriers, supports or substrates · CPC title

• B01J20/28016

  Particle form · CPC title

• B01J20/20

  comprising free carbon; comprising carbon obtained by carbonising processes · CPC title

• B01J47/016

  Modification or after-treatment of ion-exchangers · CPC title