The disclosure relates to the use of variants of C-type natriuretic peptide (CNP) to treat osteoarthritis, to ameliorate one or more symptoms of osteoarthritis, and to treat disorders having an osteoarthritis component.

The present invention relates to a polypeptide carrying a human BNP(1-32) epitope according to Formula (I): a.sub.1-R.sub.1-X.sub.1-FGRKMDR-X.sub.2-R.sub.2-a.sub.2 as well as ligands specific of the FGRKMDR epitope.

The present invention relates to a polypeptide carrying a human BNP(1-32) epitope according to Formula (I): a.sub.1-R.sub.1-X.sub.1-FGRKMDR-X.sub.2-R.sub.2-a.sub.2 as well as ligands specific of the FGRKMDR epitope.

This document provides methods and materials related to using natriuretic peptides (NPs) as markers for acute kidney injury (AKI), and methods and materials for using NPs to treat patients identified as having, or being likely to have, AKI.

The present invention relates to peptides with vasodilatory and/or diuretic functions. In particular, the invention relates to modifying key amino acid residues in natriuretic peptides to achieve different functions and properties. Accordingly the invention also includes modified natriuretic peptides. The invention also relates to the use of these peptides for regulating blood pressure-volume and/or treating a heart condition.

The present invention relates to peptides with vasodilatory and/or diuretic functions. In particular, the invention relates to modifying key amino acid residues in natriuretic peptides to achieve different functions and properties. Accordingly the invention also includes modified natriuretic peptides. The invention also relates to the use of these peptides for regulating blood pressure-volume and/or treating a heart condition.

A method for purifying a long chain polypeptide includes: 1) purification step: connecting two chromatographic columns in series to separate a crude product, in which the particle size of a packing in an upstream chromatographic column is larger than that in a downstream chromatographic column; optionally, the method further includes step 2): using the upstream chromatographic column in step 1) for a salt conversion, loading the target peak product obtained in step 1) and rinsing with 95-85% of the A2 and 5-15% of the B for 15-30 min for a desalination, wherein A2 phase is an acetic acid aqueous solution with a volume ratio of 0.05%-0.2%; B phase is an organic phase acetonitrile, and the detection wavelength is 230 nm.

A method for purifying a long chain polypeptide includes: 1) purification step: connecting two chromatographic columns in series to separate a crude product, in which the particle size of a packing in an upstream chromatographic column is larger than that in a downstream chromatographic column; optionally, the method further includes step 2): using the upstream chromatographic column in step 1) for a salt conversion, loading the target peak product obtained in step 1) and rinsing with 95-85% of the A2 and 5-15% of the B for 15-30 min for a desalination, wherein A2 phase is an acetic acid aqueous solution with a volume ratio of 0.05%-0.2%; B phase is an organic phase acetonitrile, and the detection wavelength is 230 nm.

The present disclosure relates to methods of treating a subject having abnormal vasculature by administering to the subject a therapeutically effective bolus dose of a composition including a long acting C-type natriuretic peptide (CNP), CNP derivative, long acting CNP derivative, long acting CNP receptor (NPRB) agonist, or any combination thereof. The present disclosure further relates to treating a subject in need of an increase in cytotoxic T cell and/or NK cell activity by administering to the subject a therapeutically effective bolus dose of a composition including a long acting C-type natriuretic peptide (CNP), CNP derivative, long acting CNP derivative, long acting CNP receptor (NPRB) agonist, or any combination thereof.

Materials and methods for treating hypertension (including resistant hypertension) with a combination of an M-atrial natriuretic peptide (MANP) and a diuretic agent (e.g., furosemide) are described herein.