Biopolymer marker indicative of disease state having a molecular weight of 1424 daltons
The instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time-of-flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample. The cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least one particular disease state; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of said at least one disease state relative to recognition of the presence and/or the absence of said biopolymer.
1 . A method for diagnosing congestive heart failure comprising:
(a) obtaining a sample from a patient;
(b) conducting mass spectrometric analysis on said sample in a manner effective to maximize elucidation of discernible peptide fragments contained therein; and
(c) comparing mass spectrum profiles of a peptide consisting of SEQ ID NO:1 to mass spectrum profiles of peptides elucidated from said sample; wherein recognition of a mass spectrum profile in the sample displaying the characteristic profile of the mass spectrum profile for the peptide consisting of SEQ ID NO:1 is diagnostic for congestive heart failure.
2 . The method of claim 1 , wherein said sample is an unfractionated body fluid or a tissue sample.
3 . The method of claim 1 , wherein said sample is selected from the group consisting of blood, blood products, urine, saliva, cerebrospinal fluid, and lymph.
4 . The method of claim 1 , wherein said mass spectrometric analysis is Surface Enhanced Laser Desorption Ionization (SELDI) mass spectrometry (MS).
5 . The method of claim 1 , wherein said patient is a human.
6 . A congestive heart failure diagnostic kit comprising: (a) a peptide consisting of SEQ ID NO:1 and (b) an antibody that binds to said peptide in a sample from a patient.
7 . The diagnostic kit of claim 6 , wherein said antibody is immobilized on a solid support.
8 . The diagnostic kit of claim 6 , wherein said antibody is labeled.