Images

Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
  • A61K38/06—Tripeptides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
  • A61K38/07—Tetrapeptides
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
  • A61K38/08—Peptides having 5 to 11 amino acids

Definitions

• the invention relates generally to biotechnology, and more specifically to compositions having immunoregulatory activity, which compounds include particular oligopeptides derived from human chorionic gonadotropin (“hCG”).
• hCG human chorionic gonadotropin
• Nos. 6,620,416, 6,596,688, WO 01/11048 A2, WO 01/10907 A2., and U.S. Pat. No. 6,583,109 relate to various oligopeptides and their use in, among other things, “inhibiting HIV infection,” “treating or preventing HIV infection,” “treating or preventing cancer,” “treating or preventing a condition characterized by loss of body cell mass,” “treating or preventing a condition associated with pathological angiogenesis,” “treating or preventing hematopoietic deficiency,” “ex vivo gene therapy,” “expanding blood cells in vitro,” and/or “providing blood cells to a subject.”
• compositions containing some of the oligopeptides described herein have immunoregulatory activity useful in, for example, the treatment of sepsis and other disease states and conditions.
• the invention includes a method of reducing blood urea nitrogen (BUN) concentration (herein also called urea concentration) in a subject's serum.
• BUN blood urea nitrogen
• Such a method comprises administering to the subject (e.g., a mammal such as a human) a composition comprising an oligopeptide (or oligopeptides) having activity in reducing urea concentration in the subject's serum as determined by a mouse renal reperfusion test, wherein the oligopeptide comprises the sequence AQG or LAGV (SEQ ID NO:4), or AQGV (SEQ ID NO:2) or MTRV (SEQ ID NO:1)).
• the oligopeptide of the composition will typically be from three (3) to twelve (12) amino acids in length.
• the composition may be administered orally.
• the oligopeptide will preferably be of synthetic origin (e.g., produced by a Merrifield synthesis).
• the composition When the composition is administered to the subject parenterally, the composition will typically consist essentially of oligopeptide and PBS (e.g., in an amount of from about 0.25 to about 10 mg/kg body mass of the subject).
• the invention is thought to be useful for instances, when, for example, the subject is undergoing acute renal failure, especially when the subject is undergoing persistent oliguria, is not producing more than 1 ⁇ 2 ml urine per hour per kilogram body mass of the subject, and/or has a serum potassium level greater than 6.5 mmol per liter serum.
• the invention involves administering a purified, synthetic or isolated peptide consisting of AQGV (SEQ ID NO:2), or an acid addition salt thereof.
• a typical dosage of this peptide will vary from about 0.5 to about 35 mg/kg body weight of the subject
• the invention typically when a relatively low dosage is preferred, involves administering a purified, synthetic or isolated peptide consisting of AQG, or an acid addition salt thereof at, for example, a dosage of the peptide from about 0.1 to about 10 mg/kg body weight of the subject.
• the invention also provides use of a composition according to the invention for the preparation of a pharmnaceutical composition or medicament for the treatment of a disorder such as acute renal failure.
• a composition is preferably prepared using a purified, synthetic or isolated peptide consisting of AQG or AQGV (SEQ ID NO:2) or LAGV (SEQ ID NO:4) or MTRV (SEQ ID NO:1), or an acid addition salt thereof.
• AQG when low dosages are preferred
• AQGV SEQ ID NO:2
• FIG. 1 graphically depicts the results of Example 1. Shown are the BUN (urea) values at the various points in time after treatment with peptides A to F or without treatment (control).
• FIG. 2 graphically depicts the results of Example 4. Shown are the BUN (urea) values at the various points in time after treatment with varying dosages of peptide D or peptide B or without treatment (PBS).
• BUN urea
• FIG. 3 depicts the blood urea values of Example 4 at 0, 24, and 72 hours post-clamping after administration of “peptide D” AQG and “peptide B” AQGV (SEQ ID NO:2). PBS control compared to peptide administered groups.
• a “purified, synthetic or isolated” peptide is one that has been purified from a natural or biotechnological source, or, more preferably, is synthesized as described herein.
• composition refers to chemical compounds that contain or consist of the oligopeptide.
• the oligopeptide is preferably isolated before inclusion within the composition.
• the oligopeptide most preferably consists of three (3) to six (6) amino acids.
• the previously described preferred compound could, in one embodiment be:
• NT at the N-terminus is selected from the group of H—, CH3—, an acyl group, or a general protective group; and CT at the C-terminus is selected from the group of small (e.g. 1 to 5 amino acids) peptides, —OH, —OR 1 , —NH 2 , —NHR 1 , —NR 1 R 2 , or —N(CH 2 ) 1-6 NR 1 R 2 , wherein R 1 R 2 , when present, are independently selected from H, alkyl, aryl, (ar)alkyl, and wherein R 1 R 2 , can be cyclically bonded to one another.
• small (e.g. 1 to 5 amino acids) peptides —OH, —OR 1 , —NH 2 , —NHR 1 , —NR 1 R 2 , or —N(CH 2 ) 1-6 NR 1 R 2 , wherein R 1 R 2 , when present, are independently selected from H, alkyl,
• Alkyl as used herein, is preferably a saturated branched or unbranched hydrocarbon having one to six carbon atoms, for example, methyl, ethyl, and isopentyl.
• Aryl as used herein, is an aromatic hydrocarbon group, preferably having 6 to 10 carbon atoms, such as phenyl or naphthyl.
• (Ar)alkyl as used herein, is an arene group (having both aliphatic and aromatic portions), preferably having 7 to 13 carbon atoms such as benzyl, ethylbenzyl, n-propylbenzyl, and isobutylbenzyl.
• Oletypeptide as used herein, are peptides having from 3 to 12 amino acids joined together by peptide bonds. Equivalent to oligopeptides are compounds having the same or equivalent side chains as the particular amino acids used in an oligopeptide, and arranged sequentially in the same order as the peptides, but joined together by non-peptide bonds, e.g., by isosteric linkages such as the keto isostere, hydroxy isostere, diketo isostere, or the keto-difluoromethylene isostere.
• composition also includes, for example, an acceptable salt of the oligopeptide or a labeled oligopeptide.
• acceptable salt refers to salts that retain the desired activity of the oligopeptide or equivalent compound, but preferably do not detrimentally affect the activity of the oligopeptide or other component of a system in which uses the oligopeptide.
• examples of such salts are acid addition salts formed with inorganic acids, for example, hydrochloric acid, hydrobromic acid, sulfuric acid, phosphoric acid, nitric acid, and the like.
• Salts may also be formed with organic acids such as, for example, acetic acid, oxalic acid, tartaric acid, succinic acid, maleic acid, fumaric acid, gluconic acid, citric acid, malic acid, ascorbic acid, benzoic acid, tannic acid, pamoic acid, alginic acid, polyglutamic acid, and the like.
• Salts may be formed with polyvalent metal cations such as zinc, calcium, bismuth, barium, magnesium, aluminum, copper, cobalt, nickel and the like or with an organic cation formed from N,N′-dibenzylethylenediamine or ethylenediamine, or combinations thereof (e.g., a zinc tannate salt).
• the invention also provides use of an oligopeptide having activity in reducing urea concentration in a subject's serum as determined by a mouse renal reperfusion test, the oligopeptide preferably comprising the sequence AQG or MTRV (SEQ ID NO:1) or LAGV (SEQ ID NO:4), in the production of a pharmaceutical composition for reducing urea concentration in a subject's serum, in particular when the subject is undergoing acute renal failure. It is preferred that the oligopeptide to be used in the production of the pharmaceutical composition consists of AQGV (SEQ ID NO:2).
• Such a pharmaceutical composition may be administered to the subject parenterally or orally.
• a pharmaceutical composition may consist essentially of oligopeptide and PBS. It is preferred that the oligopeptide is of synthetic origin. Suitable treatment for example entails administering the oligopeptide in the pharmaceutical composition to the patient intravenously in an amount of from about 0.1 to about 35 mg/kg body mass of the subject. It may be useful that the pharmaceutical composition consists essentially of from one to three different oligopeptides.
• Such treatment is in particular preferred when the subject is undergoing persistent oliguria, for example when the subject's kidneys are not producing more than 1 ⁇ 2 ml urine per hour per kilogram body mass of the subject, or when the subject has a serum potassium level greater than 6.5 mmol per liter serum.
• the thus developed chemical entity can be administered and introduced in-vivo systemically, topically, or locally.
• the peptide, or its modification or derivative can be administered as the entity as such or as a pharmaceutically acceptable acid- or base addition salt, formed by reaction with an inorganic acid (such as hydrochloric acid, hydrobromic acid, perchloric acid, nitric acid, thiocyanic acid, sulfuric acid, and phosphoric acid); or with an organic acid (such as formic acid, acetic acid, propionic acid, glycolic acid, lactic acid, pyruvic acid, oxalic acid, malonic acid, succinic acid, maleic acid, and fumaric acid); or by reaction with an inorganic base (such as sodium hydroxide, ammonium hydroxide, potassium hydroxide); or with an organic base (such as mono-, di-, trialkyl and aryl amines and substituted ethanolamines).
• an inorganic acid such as hydrochloric acid, hydrobromic acid, perch
• a selected peptide and any of the derived entities may also be conjugated to sugars, lipids, other polypeptides, nucleic acids and PNA; and function in-situ as a conjugate or be released locally after reaching a targeted tissue or organ.
• substitutions with regard to the various amino acids generally relate to substituting a group such as alkoxy, halogen, hydroxy, nitro, or lower alkyl onto an aromatic ring for hydrogen that would usually be present. Substitutions can also be made on the alkyl chain connecting the aromatic portion to the peptide backbone, with, for instance lower alkyl groups substituting for hydrogen. Still further substitutions can be made at the alpha position of an amino acid, also using an alkyl group.
• substitutions involve the use of fluorine or chlorine as a halogen, and methoxy as an alkoxy group.
• alkyl and lower alkyl generally alkyl groups having fewer (1 to 3) carbon atoms are preferred.
• the compounds according to the general formula may be prepared in a manner conventional for such compounds.
• suitably N alpha protected (and side-chain protected if reactive side-chains are present) amino acid derivatives or peptides are activated and coupled to suitably carboxyl protected amino acid or peptide derivatives either in solution or on a solid support. Protection of the alpha-amino functions generally takes place by urethane functions such as the acid-labile tertiary-butyloxycarbonyl group (“Boc”), benzyloxycarbonyl (“Z”) group and substituted analogs or the base-labile 9-fluoremyl-methyloxycarbonyl (“Fmoc”) group.
• the Z group can also be removed by catalytic hydrogenation.
• protecting groups include the Nps, Bmv, Bpoc, Aloc, MSC, etc.
• a good overview of amino protecting groups is given in The peptides, Analysis, Synthesis, Biology, Vol. 3 E. Gross and J. Meienhofer, eds. (Academic Press, New York, 1981). Protection of carboxyl groups can take place by ester formation, for example, base-labile esters like methyl or ethyl, acid labile esters like tert. butyl or, substituted, benzyl esters or hydrogenolytically. Protection of side-chain functions like those of lysine and glutamic or aspartic acid can take place using the aforementioned groups.
• Activation of the carboxyl group of the suitably protected amino acids or peptides can take place by the azide, mixed anhydride, active ester, or carbodiimide method especially with the addition of catalytic and racemization-suppressing compounds like 1-N-N-hydroxybenzotriazole, N-hydroxysuccinimide, 3-hydroxy-4-oxo-3,4-dihydro-1,2,3,-benzotriazine, N-hydroxy-5norbomene-2,3-dicarboxyimide.
• the anhydrides of phosphorus based acids can be used. See, e.g., The Peptides, Analysis, Synthesis, Biology, supra and Pure and Applied Chemistry, 59(3), 331-344 (1987).
• Removal of the protecting groups, and, in the case of solid phase peptide synthesis, the cleavage from the solid support, can take place in different ways, depending on the nature of those protecting groups and the type of linker to the solid support.
• deprotection takes place under acidic conditions and in the presence of scavengers. See, e.g. volumes 3, 5 and 9 of the series on The Peptides Analysis, Synthesis, Biology, supra.
• oligopeptides according to the invention could also be made according to recombinant DNA methods. Such methods involve the preparation of the desired oligopeptide thereof by means of expressing recombinant polynucleotide sequence that codes for one or more of the oligopeptides in question in a suitable microorganism as host.
• the process involves introducing into a cloning vehicle (e.g., a plasmid, phage DNA, or other DNA sequence able to replicate in a host cell) a DNA sequence coding for the particular oligopeptide or oligopeptides, introducing the cloning vehicle into a suitable eucaryotic or prokaryotic host cell, and culturing the host cell thus transformed.
• a cloning vehicle e.g., a plasmid, phage DNA, or other DNA sequence able to replicate in a host cell
• a DNA sequence coding for the particular oligopeptide or oligopeptides e.g., a plasmid, phage DNA, or other DNA sequence able to replicate in a host cell
• a eucaryotic host cell e.g., a plasmid, phage DNA, or other DNA sequence able to replicate in a host cell
• the cloning vehicle e.g.,
• a “functional analogue” or “derivative” of a peptide includes an amino acid sequence, or other sequence monomers, which has been altered such that the functional properties of the sequence are essentially the same in kind, not necessarily in amount.
• An analogue or derivative can be provided in many ways, for instance, through “conservative amino acid substitution.”
• peptidomimetic compounds can be designed that functionally or structurally resemble the original peptide taken as the starting point but that are for example composed of non-naturally occurring amino acids or polyamides. With “conservative amino acid substitution,” one amino acid residue is substituted with another residue with generally similar properties (size, hydrophobicity), such that the overall functioning is likely not to be seriously affected.
• a derivative can also be provided by systematically improving at least one desired property of an amino acid sequence. This can, for instance, be done by an Ala-scan and/or replacement net mapping method. With these methods, many different peptides are generated, based on an original amino acid sequence but each containing a substitution of at least one amino acid residue. The amino acid residue may either be replaced by alanine (Ala-scan) or by any other amino acid residue (replacement net mapping). This way, many positional variants of the original amino acid sequence are synthesized. Every positional variant is screened for a specific activity. The generated data are used to design improved peptide derivatives of a certain amino acid sequence.
• a derivative or analogue can also be, for instance, generated by substitution of an L-amino acid residue with a D-amino acid residue.
• This substitution leading to a peptide that does not naturally occur in nature, can improve a property of an amino acid sequence. It is, for example, useful to provide a peptide sequence of known activity of all D-amino acids in retro inversion format, thereby allowing for retained activity and increased half-life values.
• improved peptide derivatives comprising such D-amino acids can be designed with further improved characteristics.
• peptides or analogues can be circularized, for example, by providing them with (terminal) cysteines, dimerized or multimerized, for example, by linkage to lysine or cysteine or other compounds with side-chains that allow linkage or multimerization, brought in tandem- or repeat-configuration, conjugated or otherwise linked to carriers known in the art, if only by a labile link that allows dissociation.
• Synthetic versions of these oligopeptides as described above, and functional analogues or derivatives or breakdown products, are herein provided to lower BUN concentration be used in methods to the treatment of disease.
• composition as used herein is intended to cover both the active composition of the invention alone or a composition containing the composition of the invention together with a pharmaceutically acceptable carrier, diluent or excipient.
• Acceptable diluents of an oligopeptide as described herein in the detailed description are for example physiological salt solutions or phosphate buffered salt solutions.
• an oligopeptide or composition is administered in an effective concentration to an animal or human systemically, for example, by intravenous, intra-muscular or intraperitoneal administration.
• Another way of administration comprises perfusion of organs or tissue, be it in vivo or ex vivo, with a perfusion fluid comprising an oligopeptide or composition according to the invention.
• the administration may be done as a single dose, as a discontinuous sequence of various doses, or continuously for a period of time sufficient to permit substantial modulation of gene expression.
• the duration of the administration may vary depending upon a number of factors that would readily be appreciated by those skilled in the art.
• the administration dose of the active molecule may be varied over a fairly broad range.
• concentrations of an active molecule that can be administered would be limited by efficacy at the lower end and the solubility of the compound at the upper end.
• the optimal dose or doses for a particular patient should and can be determined by the physician or medical specialist involved, taking into consideration well-known relevant factors such as the condition, weight and age of the patient, etc.
• the active molecule may be administered directly in a suitable vehicle, such as, for example, phosphate-buffered saline (“PBS”) or solutions in alcohol or DMSO.
• a suitable vehicle such as, for example, phosphate-buffered saline (“PBS”) or solutions in alcohol or DMSO.
• PBS phosphate-buffered saline
• the active molecule is administered through a single dose delivery using a drug-delivery system.
• a suitable drug-delivery system would be pharmacologically inactive or at least tolerable. It should preferably not be immunogenic nor cause inflammatory reactions, and should permit release of the active molecule so as to maintain effective levels thereof over the desired time period.
• Alternatives are known in the art as suitable for purposes of sustained release and are contemplated as within the scope of the present invention.
• Suitable delivery vehicles include, but are not limited to, the following: microcapsules or microspheres; liposomes and other lipid-based release systems; viscous instillates; absorbable and/or biodegradable mechanical barriers and implants; and polymeric delivery materials, such as polyethylene oxide/polypropylene oxide block copolymers, polyesters, crosslinked polyvinyl alcohols, polyanhydrides, polymethacrylate and polymethacrylamide hydrogels, anionic carbohydrate polymers, etc.
• Useful delivery systems are well known in the art.
• One formulation to achieve the active molecule release comprises injectable microcapsules or microspheres made from a biodegradable polymer, such as poly(dl-lactide), poly(dl-lactide-co-glycolide), polycaprolactone, polyglycolide, polylactic acid-co-glycolide, poly(hydroxybutyric acid), polyesters or polyacetals.
• injectable systems comprising microcapsules or microspheres having a diameter of about 50 to about 500 micrometers offer advantages over other delivery systems. For example, they generally use less active molecules and may be administered by paramedical personnel. Moreover, such systems are inherently flexible in the design of the duration and rate of separate drug release by selection of microcapsule or microsphere size, drug loading and dosage administered. Further, they can be successfully sterilized by gamma irradiation.
• microcapsules and microspheres are well within the reach of persons skilled in the art and detailed information concerning these points is available in the literature.
• Biodegradable polymers such as lactide, glycolide and caprolactone polymers
• Fibers or filaments comprising the active molecule are also contemplated as within the scope of the present invention.
• Another highly suitable formulation for a single-dose delivery of the active molecule in accordance with the present invention involves liposomes.
• the encapsulation of an active molecule in liposomes or multilamellar vesicles is a well-known technique for targeted drug delivery and prolonged drug residence.
• the preparation and use of drug-loaded liposomes is well within the reach of persons skilled in the art and well documented in the literature.
• Suitable approach for single-dose delivery of an active molecule in accordance with the present invention involves the use of viscous installates.
• high molecular weight carriers are used in admixture with the active molecule, giving rise to a structure that produces a solution with high viscosity.
• Suitable high molecular weight carriers include, but are not limited to, the following: dextrans and cyclodextrans; hydrogels; (cross-linked) viscous materials, including (cross-linked) viscoelastics; carboxymethylcellulose; hyaluronic acid; and chondroitin sulfate.
• dextrans and cyclodextrans include, but are not limited to, the following: dextrans and cyclodextrans; hydrogels; (cross-linked) viscous materials, including (cross-linked) viscoelastics; carboxymethylcellulose; hyaluronic acid; and chondroitin sulfate.
• the preparation and use of drug-loaded viscous instillates is
• the active molecule may be administered in combination with absorbable mechanical barriers such as oxidized regenerated cellulose.
• the active molecule may be covalently or non-covalently (e.g., ionically) bound to such a barrier, or it may simply be dispersed therein.
• oligopeptides i.e., A: LAGV (SEQ ID NO:4), B: AQGV (SEQ ID NO:2), C: LAG, D: AQG, E: MTR, and F: MTRV (SEQ Ip NO:1)
• PBS control
• each of the separate peptides was administered to thirty (30) different mice (5 mg oligopeptide/kg body mass intravenously), after which, the mortality of the mice was determined for each oligopeptide as well as was the BUN concentration at two hours, 24 hours and 72 hours.
• the results are shown in FIG. 1 and (excluding the results of peptide A (LAGV (SEQ ID NO:4)) obtained in example 1) in Table 2 below.
• the left kidney with its artery and vein was isolated and occluded for 25 minutes using a microvascular clamp.
• animals were placed on a heating path to maintain body temperature at 37° C.
• Five minutes before placing the clamp, and 5 minutes before releasing the clamp 5 mg/kg of peptide, dissolved in 0.1 mL of sterile saline, was administered intravenously.
• After reperfusion of the left kidney the right kidney was removed. Kidney function was assessed by measuring blood urea nitrogen before clamping, and at 2, 24, and 72 hours after reperfusion.
• Peptide A was the first peptide administered in the renal ischemia reperfusion test. The personnel who performed the experiments went through a learning curve while working with peptide A (SEQ ID NO:4). During administration of the peptide in the inferior caval vein, some animals experienced moderate blood loss from the site of injection, whereas others did not. Inadvertently the animals were returned to the stable without drinking water present in their cages the first night after surgery. Also, by mistake, the animals that were intended to be sacrificed at 72 h were killed 48 h after reperfusion. None of these or other problems were encountered during the experiments with peptides B-F. (See, Example 2)
• mice administered the oligopeptides MTRV (SEQ ID NO:1) and especially AQGV (SEQ ID NO:2) did much better in terms of both survival (a significant reduction in mortality versus the PBS control group) and reduced BUN concentration than the control group (PBS) or the group administered the other oligopeptides, with more mice surviving and the serum urea levels being much lower than in the other groups.
• the oligopeptides LAG, AQG, and MTR in this experiment having no reducing effect on BUN concentration, each caused a significant reduction of mortality compared to the PBS control, where MTR did significantly raise BUN levels in the tested mice at 72 hrs.
• mice administered the oligopeptide LQG did show reduced BUN concentration early in the experiment (at 24 hours post-reperfusion) and mice administered VLPALPQ (SEQ ID NO:5) did much better in terms of reduced BUN concentration late in the experiment (at 72 hours post-reperfusion) than the control group (PBS) or the group administered the other oligopeptides, with more mice surviving and the serum urea levels being much lower than in the other groups.
• a p 0.0491 NMPF-47 LAGV (SEQ ID NO: 4)
• B p 0.0008 NMPF-46 AQGV (SEQ ID NO: 2)
• C p 0.9248 NMPF-44 LAG
• D p 0.4043 NMPF-43 AQG
• E p 0.1848 NMPF-12 MTR
• F p 0.0106 NMPF-11 MTRV (SEQ ID NO: 1)
• G p 0.1389 NMPF-7 VLPALPQ (SEQ ID NO: 5)
• H p 0.5613 NMPF-6 VLPALP (SEQ ID NO: 6)
• I p 0.9301 NMPF-4 LQGV (SEQ ID NO: 3)
• J p 0.0030 NMPF-3 LQG
• a p 0.0017 NMPF-47 LAGV (SEQ ID NO: 4)
• C p 0.8186 NMPF-44 LAG
• D p 0.2297 NMPF-43 AQG
• E p 0.0242 NMPF-12 MTR
• F p 0.0021 NMPF-11 MTRV (SEQ ID NO: 1)
• G p 0.0049 NMPF-7 VLPALPQ (SEQ ID N0: 5)
• H p 0.3297 NMPF-6 VLPALP (SEQ ID N0: 6)
• I p 0.8328 NMPF-4 LQGV (SEQ ID N0: 3)
• P values (calculated by Mann Whitney U-test (SPSS for Windows)) of serum urea levels of PBS compared to peptide D groups at 72 hours post-clamping were at 0.3 mg/kg 0.001, at 1 mg/kg 0.009, at 3 mg/kg 0.02, at 10 mg/kg 0.000, and at 30 mg/kg 0.23, for peptide B groups these P-values were 0.88, 0.054, 0.000, 0.001 and 0.003.
• peptide D (AQG) did reduce BUN levels surprisingly well at the lower dosages tested, as compared with peptide B (AQGV (SEQ ID NO:2)), while the beneficial effect on mortality was also still notable at the lower dosages tested.

Abstract

Description

Claims (4)

Priority Applications (1)

Applications Claiming Priority (9)

Related Parent Applications (1)

Publications (1)

Family

ID=45841997

Family Applications (1)

Country Status (1)

Citations (80)

• 2011
  • 2011-03-17 US US13/065,316 patent/USRE43279E1/en not_active Expired - Fee Related

Patent Citations (109)

Non-Patent Citations (84)

Similar Documents

Legal Events