Method for treating traumatic brain injury
阅读说明：本技术 治疗创伤性脑损伤的方法 (Method for treating traumatic brain injury ) 是由 菲利普·陈 于 2018-05-21 设计创作，主要内容包括：本发明涉及治疗患有创伤性脑损伤(TBI)的患者的方法及用于进行这样的治疗的药盒,所述方法包括使所述患者的血液与炎性介质的吸着剂接触。(The present invention relates to a method of treating a patient suffering from Traumatic Brain Injury (TBI) comprising contacting the patient's blood with a sorbent of an inflammatory mediator, and a kit for performing such treatment.)
1. A method of treating a patient suffering from Traumatic Brain Injury (TBI) comprising contacting the patient's blood with a sorbent of an inflammatory mediator.
2. The method of claim 1, wherein the sorbent comprises a biocompatible polymer.
3. The method of claim 2, wherein the biocompatible polymer comprises particles having a diameter of 0.1 microns to 2 centimeters.
4. The method of claim 2, wherein the biocompatible polymer is in the form of a powder, beads, or other regularly or irregularly shaped particles.
5. The method of claim 2, wherein the biocompatible polymer has a pore structure with a pore size of
6. The method of claim 2, wherein:
the biocompatible polymer has a pore structure with a pore diameter of
wherein the biocompatible polymer has a diameter of
Wherein the biocompatible polymer has a diameter of
7. The method of claim 2, wherein the biocompatible polymer is a coated polymer comprising at least one cross-linking agent and at least one dispersant;
such as hydroxyethyl cellulose, hydroxypropyl cellulose, poly (hydroxyethyl methacrylate), poly (hydroxyethyl acrylate), poly (hydroxypropyl methacrylate), poly (hydroxypropyl acrylate), poly (dimethylaminoethyl methacrylate), poly (dimethylaminoethyl acrylate), poly (diethylaminoethyl methacrylate), poly (diethylaminoethyl acrylate), poly (vinyl alcohol), poly (N-vinyl pyrrolidone), salts of poly (methacrylic acid), and salts of poly (acrylic acid), and mixtures thereof;
the crosslinking agent is selected from the group consisting of divinylbenzene, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol, tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof;
the polymer is formed simultaneously with the formation of the coating, wherein the dispersant is chemically bonded to the surface of the biocompatible polymer.
8. The method of claim 7, wherein the biocompatible polymer comprises residues from one or more monomers selected from the group consisting of: divinylbenzene and ethylvinylbenzene, styrene, ethylstyrene, acrylonitrile, butyl methacrylate, octyl methacrylate, butyl acrylate, octyl acrylate, hexadecyl methacrylate, hexadecyl acrylate, ethyl methacrylate, ethyl acrylate, vinyltoluene, vinylnaphthalene, vinylbenzyl alcohol, vinylformamide, methyl methacrylate, methyl acrylate, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, mixtures thereof, and mixtures thereof, Pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof.
9. The method of claim 2, wherein the biocompatible polymer is an ion exchange polymer.
10. The method of claim 2, wherein the biocompatible polymer is a cellulosic polymer.
11. The method of claim 2, wherein the biocompatible polymer is a porous highly crosslinked styrene or divinylbenzene copolymer.
12. The method of claim 2, wherein the porous highly crosslinked styrene or divinylbenzene copolymer is a macroporous or mesoporous styrene-divinylbenzene-ethylstyrene copolymer partially chloromethylated to a chlorine content of up to 7% molecular weight.
13. The method of claim 2, wherein the porous highly crosslinked styrene or divinylbenzene copolymer is an ultra-high crosslinked polystyrene produced from crosslinked styrene copolymers by extensive chloromethylation and subsequent post-crosslinking by treatment with a friedel-crafts catalyst in the swollen state.
14. The method of claim 2, wherein the biocompatible polymer is a hydrophilic self-wetting polymer that can be administered as a dry powder or dry granules comprising hydrophilic functional groups such as chloride groups, amine groups, hydroxyl groups, sulfonate groups, and carboxyl groups.
15. The method of claim 1, wherein the polymer is pyrolyzed.
16. The method of any one of claims 1 to 15, wherein the sorbent is contained within a cartridge.
17. The method of any one of claims 1 to 15, wherein the contacting comprises:
-removing blood from said patient;
-contacting the blood with the sorbent outside the patient's body; and
-returning said blood to said patient.
18. The method of claim 17, wherein the sorbent is contained within a cartridge and the withdrawing and returning are part of a continuous circuit connecting a suitable artery within the patient with a suitable vein within the patient.
19. The method of any one of claims 1 to 15, wherein the sorbent is administered orally, through a feeding tube, peritoneally, or rectally.
20. A kit for treating a patient suffering from Traumatic Brain Injury (TBI), the kit comprising a cartridge comprising a sorbent for removing toxins from the blood of the patient.
21. The kit of claim 20, wherein the sorbent comprises a biocompatible polymer.
22. The kit of claim 21, wherein the biocompatible polymer comprises particles having a diameter of 0.1 microns to 2 centimeters.
23. The kit of claim 21, wherein the biocompatible polymer is in the form of a powder, beads, or other regularly or irregularly shaped particles.
24. The kit of claim 21, wherein the biocompatible polymer has a pore structure with a pore size of
25. The kit of claim 21, wherein:
the biocompatible polymer has a pore structure with a pore diameter ofTo
wherein the biocompatible polymer has a diameter of
Wherein the biocompatible polymer has a diameter ofTo
26. The kit of claim 21, wherein the biocompatible polymer is a coated polymer comprising at least one cross-linking agent and at least one dispersant;
such as hydroxyethyl cellulose, hydroxypropyl cellulose, poly (hydroxyethyl methacrylate), poly (hydroxyethyl acrylate), poly (hydroxypropyl methacrylate), poly (hydroxypropyl acrylate), poly (dimethylaminoethyl methacrylate), poly (dimethylaminoethyl acrylate), poly (diethylaminoethyl methacrylate), poly (diethylaminoethyl acrylate), poly (vinyl alcohol), poly (N-vinyl pyrrolidone), salts of poly (methacrylic acid), and salts of poly (acrylic acid), and mixtures thereof;
the crosslinking agent is selected from the group consisting of divinylbenzene, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol, tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof;
the polymer is formed simultaneously with the formation of the coating, wherein the dispersant is chemically bonded to the surface of the biocompatible polymer.
27. The kit of claim 26, wherein the biocompatible polymer comprises residues from one or more monomers selected from the group consisting of: divinylbenzene and ethylvinylbenzene, styrene, ethylstyrene, acrylonitrile, butyl methacrylate, octyl methacrylate, butyl acrylate, octyl acrylate, hexadecyl methacrylate, hexadecyl acrylate, ethyl methacrylate, ethyl acrylate, vinyltoluene, vinylnaphthalene, vinylbenzyl alcohol, vinylformamide, methyl methacrylate, methyl acrylate, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, mixtures thereof, and mixtures thereof, Pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof.
28. The kit of claim 21, wherein the biocompatible polymer is an ion exchange polymer.
29. The kit of claim 21, wherein the biocompatible polymer is a cellulosic polymer.
30. The kit of claim 21, wherein the biocompatible polymer is a porous highly crosslinked styrene or divinylbenzene copolymer.
31. The kit of claim 21, wherein the porous highly crosslinked styrene or divinylbenzene copolymer is a macroporous or mesoporous styrene-divinylbenzene-ethylstyrene copolymer partially chloromethylated to a chlorine content of up to 7% molecular weight.
32. The kit of claim 21, wherein the porous highly crosslinked styrene or divinylbenzene copolymer is an ultra-high crosslinked polystyrene produced from crosslinked styrene copolymers by extensive chloromethylation and subsequent post-crosslinking by treatment with a friedel-crafts catalyst in the swollen state.
33. The kit of claim 32, wherein the porous highly crosslinked styrene or divinylbenzene copolymer is an ultra-high crosslinked polystyrene produced from a crosslinked styrene copolymer by extensive additional post-crosslinking in the swollen state with a bifunctional crosslinking agent selected from the group comprising monochlorodimethyl ether and p-dichloroxylene.
34. The kit of claim 21, wherein the biocompatible polymer is a hydrophilic self-wetting polymer that can be administered as a dry powder or dry granulation comprising hydrophilic functional groups such as chloride groups, amine groups, hydroxyl groups, sulfonate groups, and carboxyl groups.
35. The kit of claim 20, wherein the polymer is pyrolyzed.
36. The kit of any one of claims 20 to 35, wherein the sorbent is contained within a cartridge.
37. The kit of claim 36, wherein the contacting comprises contacting the blood with the sorbent outside of the patient's body and returning the blood to the patient.
38. The kit of any one of claims 20 to 37, further comprising a label comprising instructions for use of the cartridge.
39. The kit of any one of claims 20 to 38, further comprising instructions for use of the cartridge.
40. The kit of any one of claims 20 to 39, further comprising a device for removing blood from the patient, contacting the blood with the sorbent, and returning the blood to the patient.
Technical Field
The present invention relates in particular to a method of treating traumatic brain injury.
Background
The inflammatory response occurs rapidly after Traumatic Brain Injury (TBI). This response is characterized by the release of certain cytokines with pro-inflammatory and anti-inflammatory functions. There is a need in the art for treatments that improve survival of victims with such injuries.
Disclosure of Invention
In some aspects, the invention relates to methods of treating a patient suffering from Traumatic Brain Injury (TBI) comprising contacting the patient's blood with a sorbent (sorbent) of one or more inflammatory mediators resulting from such injury. In certain embodiments, the sorbent comprises any of the polymers described herein.
In other aspects, the invention relates to a kit comprising a cartridge (cartridge) comprising a sorbent for inflammatory mediators associated with traumatic brain injury. The kit can comprise any of the polymers described herein. In some embodiments, the kit comprises instructions for use of the cartridge. Some instructions are contained on a label attached to the cartridge.
Drawings
Figure 1 shows the survival of rats receiving actual and sham treatments.
Figure 2 shows the levels of certain inflammatory mediators over time in the case of actual and sham treatment after traumatic brain injury.
Detailed Description
The inflammatory response occurs rapidly after Traumatic Brain Injury (TBI). This response is characterized by the release of toxins, such as certain cytokines with pro-inflammatory and anti-inflammatory functions. The present disclosure relates to treating such injuries by removing certain toxins from the patient's blood.
In some aspects, the invention relates to methods of treating a patient suffering from Traumatic Brain Injury (TBI) comprising contacting the patient's blood with a sorbent of one or more inflammatory mediators resulting from such injury. In certain embodiments, the sorbent comprises any of the polymers described herein.
Some treatment methods involve a circuit for removing blood from the patient, contacting the blood with a sorbent, and returning the blood to the patient. In certain embodiments, the sorbent is in a cartridge and blood is collected from a suitable artery and returned to the patient through a suitable vein.
In other aspects, the invention relates to a kit comprising a cartridge comprising a sorbent for inflammatory mediators associated with traumatic brain trauma. The kit can comprise any of the polymers described herein. In some embodiments, the kit comprises instructions for use of the cartridge. Some instructions are contained on a label attached to the cartridge. Some kits additionally comprise a device for removing blood from the patient, contacting the blood with a sorbent, and returning the blood to the patient.
In some embodiments, the polymeric material used as a sorbent is substantially not metabolizable by humans and animals. Some polymers may be irregularly or regularly shaped particles, such as powders, beads, or other forms, having a diameter of 0.1 micron to 2 centimeters.
The polymers used in the present invention preferably have a biocompatible and hemocompatible outer surface coating, but this is not absolutely necessary, especially in certain cases (e.g. oral or rectal administration). Some of these coatings are covalently bound to polymer particles (e.g., beads) by free-radical grafting. Free radical grafting can occur, for example, during the conversion of monomer droplets into polymer beads. As the monomer within the droplet polymerizes and converts to polymer, the dispersant coating and stabilizing the monomer droplet becomes covalently bound to the surface of the droplet. If the dispersant used in the suspension polymerization is not a dispersant that imparts biocompatibility or hemocompatibility, a biocompatible and hemocompatible outer surface coating can be covalently grafted onto the preformed polymer beads. The grafting of the biocompatible and hemocompatible coating onto the preformed polymer beads is carried out by activating the radical initiator in the presence of monomers or low molecular weight oligomers of the polymer that impart biocompatibility or hemocompatibility to the surface coating.
By "biocompatible" is meant that the polymer is capable of contacting living tissue or an organism without causing harm to the polymer during the time it is in contact with the tissue or organism. In some embodiments, the polymer is intended to be tolerated by the intestine and digestive tract of an organism. The polymers of the present invention are preferably non-toxic.
In some embodiments, the polymer has a preferential pore structure such that the pore size is
Some preferred polymers are coated polymers comprising at least one crosslinker and at least one dispersant. Suitable dispersing agents include hydroxyethyl cellulose, hydroxypropyl cellulose, poly (hydroxyethyl methacrylate), poly (hydroxyethyl acrylate), poly (hydroxypropyl methacrylate), poly (hydroxypropyl acrylate), poly (dimethylaminoethyl methacrylate), poly (dimethylaminoethyl acrylate), poly (diethylaminoethyl methacrylate), poly (diethylaminoethyl acrylate), poly (vinyl alcohol), poly (N-vinylpyrrolidone), salts of poly (methacrylic acid), and salts of poly (acrylic acid), and mixtures thereof.
Suitable crosslinking agents include divinylbenzene, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol, tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof. Preferably, the polymer is formed at the same time as the coating is formed, such that the dispersant is chemically bonded to the surface of the polymer.
Preferred polymers include those derived from one or more monomers selected from the group consisting of: divinylbenzene and ethylvinylbenzene, styrene, ethylstyrene, acrylonitrile, butyl methacrylate, octyl methacrylate, butyl acrylate, octyl acrylate, hexadecyl methacrylate, hexadecyl acrylate, ethyl methacrylate, ethyl acrylate, vinyltoluene, vinylnaphthalene, vinylbenzyl alcohol, vinylformamide, methyl methacrylate, methyl acrylate, trivinylbenzene, divinylnaphthalene, trivinylcyclohexane, divinylsulfone, trimethylolpropane trimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane diacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, mixtures thereof, and mixtures thereof, Pentaerythritol tetraacrylate, dipentaerythritol dimethacrylate, dipentaerythritol trimethacrylate, dipentaerythritol tetramethacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol tetraacrylate, divinylformamide, and mixtures thereof.
Some preferred polymers are ion exchange polymers.
Some preferred polymers are cellulosic polymers. Suitable polymers include cross-linked dextran gels, for example
Some preferred polymers are porous highly crosslinked styrene or divinylbenzene copolymers. Some of these polymers are macroporous or mesoporous styrene-divinylbenzene-ethylstyrene copolymers that have been partially chloromethylated to a chlorine content of up to 7% molecular weight. Others of these polymers are ultra-highly crosslinked polystyrenes produced from crosslinked styrene copolymers by extensive chloromethylation and subsequent post-crosslinking by treatment with Friedel-Crafts catalysts in the swollen state. Others of these polymers are ultra-high crosslinked polystyrenes produced from crosslinked styrene copolymers by extensive additional post-crosslinking in the swollen state with a bifunctional crosslinking agent selected from the group comprising monochlorodimethyl ether and p-dichloroxylene.
Some polymers useful in the practice of the present invention are hydrophilic self-wetting polymers that can be applied as a dry powder containing hydrophilic functional groups such as amine, hydroxyl, sulfonate, and carboxyl groups.
Certain polymers useful in the present invention are macroporous polymers prepared from polymerizable monomers of styrene, divinyl benzene, ethylvinyl benzene and acrylate and methacrylate monomers, such as those listed below by the following manufacturers. Rohm and Haas Company (now part of the Dow chemical Company): (i) macroporous polymeric sorbents, e.g. AmberliteTM XAD-1、AmberliteTM XAD-2、AmberliteTM XAD-4、AmberliteTM XAD-7、AmberliteTM XAD-7HP、AmberliteTM XAD-8、AmberliteTM XAD-16、AmberliteTM XAD-16HP、AmberliteTM XAD-18、AmberliteTM XAD-200、AmberliteTM XAD-1180、AmberliteTM XAD-2000、AmberliteTM XAD-2005、AmberliteTM XAD-2010、AmberliteTMXAD-761 and AmberliteTMXE-305; and chromatographic grade sorbents, e.g. AmberchromTMCG 71，s，m，c、AmberchromTM CG 161，s，m，c、AmberchromTMCG 300, s, m, c and AmberchromTMCG 1000, s, m, c. Dow chemical company:
Traumatic brain injury can produce injury-associated molecular pattern (DAMP) molecules that include (1) molecules that perform non-inflammatory functions in living cells (e.g., HMGB1) and acquire immunomodulatory properties when released, secreted, modified or exposed on the cell surface during cellular stress, injury or injury; or (2) sirens (alarmins), molecules with cytokine-like functions (e.g., β -defensins (β -defensens) and antimicrobial peptides (cathelicidins)), which can be stored in cells and released after cell lysis, so they promote an inflammatory response. When released outside the cell or exposed on the cell surface after tissue damage, they move from a reducing environment to an oxidizing environment, which affects their activity. Also, after necrosis, mitochondrial and nuclear DNA fragments are released outside the cell as DAMP. Certain cytokines with pro-inflammatory and anti-inflammatory functions are important toxins produced by traumatic brain injury.
The invention also relates to a kit comprising a cartridge containing a sorbent for inflammatory mediators associated with traumatic brain trauma. The kit can comprise any of the polymers described herein. In some embodiments, the kit comprises instructions for use of the cartridge. Some instructions are contained on a label attached to the cartridge.
The term "sorbent" as used herein includes adsorbents and absorbents.
As used herein, the term "a" or "an" unless the context clearly dictates otherwise, means one or more, and reference to a particular value includes at least that particular value. When a range of values is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent "about," it will be understood that the particular value forms another embodiment. All ranges are inclusive and combinable.
The sorbent is typically contained within a cartridge that is adapted to allow blood to flow into the cartridge and then out of the cartridge and then back to the patient's body. Although a cartridge is typically used, other containers that allow blood to contact the sorbent and then return to the patient may also be used.
In some embodiments, blood is collected from a suitable artery and returned to the patient via a suitable vein. Methods of establishing a circuit for withdrawing blood and returning it to the body of a patient are well known to those skilled in the art.
The sorbent for use outside the body may be provided in a pre-loaded cartridge. Such cartridges may have one or more shields (screens) to prevent the sorbent from exiting the cartridge during use.
Alternatively, in some embodiments, the sorbent can be administered into the body of an animal. In some preferred embodiments, the animal is a human. In certain embodiments, the dose of sorbent is administered orally, through a feeding tube, peritoneally, or rectally.
Some polymers may be provided as a slurry (slurry), or suspension, or dry powder or other dry particles capable of being wetted. In some methods, the sorbent is provided for oral administration as a slurry or suspension packaged in a single-dose or multi-dose package. In other methods, the sorbent is provided for administration by enema or feeding tube or any combination thereof as a slurry or suspension packaged in single or multi-dose packages.
The polymer may also be provided as a dry powder or other dry granules capable of being wetted outside or inside the digestive tract (which is included in the gastric or intestinal environment), with or without the addition of a wetting agent (e.g., ethanol or isopropanol). In other embodiments, the polymer is provided for administration as a tablet, dry powder, other dry granules, capsule, or suppository packaged in a bottle or blister pack (blister pack).
In some methods, the polymeric material is not metabolizable by humans and animals.
The compositions of the present invention may be applied by methods well known to those skilled in the art. In some embodiments, the application is topical. Such methods include ocular administration, administration to the skin or wound, direct administration into a body cavity or joint, and delivery to the mucosa (e.g., nasal, oral, vaginal, and rectal delivery) or other delivery to the digestive tract. In some embodiments, such methods include local or systemic administration by oral or parenteral routes. In some embodiments, the treatment is in vitro. Extracorporeal administration will include removing inflammatory mediators from blood or physiological fluids by circulating the fluid through a device containing a sorbent and returning the fluid to the body. Parenteral administration includes intravenous, intraarterial, subcutaneous, intraperitoneal or intramuscular injection or infusion; or intracranial administration (including intrathecal or intraventricular) administration).
Pharmaceutical compositions and formulations for topical administration include, but are not limited to, ointments, lotions, creams, transdermal patches, gels, drops, suppositories, sprays, liquids, and powders. The use of conventional pharmaceutical carriers, oily bases, aqueous agents, powders, thickeners and the like can be used in the formulations.
The pharmaceutical composition can also be administered in the form of tablets, capsules, gel capsules, syrups, suspensions, and the like.
Penetration enhancers (penetration enhancers) may also be used in the pharmaceutical compositions of the present invention. Such enhancers include surfactants, fatty acids, bile salts, chelating agents, and non-chelating non-surfactants and are generally known in the art.
The polymers of the present invention may be administered to a patient at one time or in multiple doses. Determination of the amount to be administered is within the level of skill of the person skilled in the art.
The polymers useful in the present invention may be provided as a slurry, suspension, or may be reconstituted from a dry state into a slurry or suspension. In some embodiments, the polymer may be provided for oral administration as a slurry or suspension packaged in single or multi-dose vials. In other embodiments, the polymer may be provided as a slurry or suspension packaged in single or multi-dose bottles for administration by enema or feeding tube or any combination thereof. In certain embodiments, the polymer is provided as a dry powder that can be wetted outside of or in the digestive tube, with or without the addition of a wetting agent such as ethanol.
The polymers may be provided for administration as tablets, capsules or suppositories packaged in bottles or blister packs. Depending on the application, the polymer may be sterile or non-sterile. The polymers may be sterilized by standard methods. Such methods are well known to those skilled in the art.
The following examples are intended to be illustrative and not limiting.
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