Biomarkers for abnormal kidney function, including the biomarkers in Tables 1 and 2 such as peroxiredoxin-2, complement C1q subcomponent subunit B, sulfhydryl oxidase 1 and apolipoprotein A-IV, and methods for their use in assessing abnormal kidney function are disclosed herein.

An analysis method includes: acquiring data corresponding to a mass spectrum obtained by subjecting a sample containing a microorganism to mass spectrometry; and acquiring information on Group A Streptococcus of emm type 1, based on the presence or absence, or magnitude of a peak in a first range of m/z of 10930 or more to 10945 or less in the mass spectrum.

A method evaluates a quality of a dephosphorylation reagent, the method including the steps of: providing a dephosphorylation reagent containing an alkaline phosphatase and a peptide fragment derived from the alkaline phosphatase; and evaluating the dephosphorylation reagent as having a high quality if a content ratio of the peptide fragment to the alkaline phosphatase is a predetermined reference value or less.

To provide an anti-cancer agent sensitivity determination marker, which marker can determine whether or not the patient has a therapeutic response to the anti-cancer agent, and novel cancer therapeutic means employing the marker. The anti-cancer agent sensitivity determination marker, the anti-cancer agent including oxaliplatin or a salt thereof and fluorouracil or a salt thereof, contains one or more substances selected from among an amino-acid-metabolism-related substance, a nucleic-acid-metabolism-related substance, a substance in the pentose phosphate pathway, a substance in the glycolytic pathway, a substance in the TCA cycle, a polyamine-metabolism-related substance, 7,8-dihydrobiopterin, 6-phosphogluconic acid, butyric acid, triethanolamine, 1-methylnicotinamide, NADH, NAD.sup.+, and a substance involved in the metabolism of any of these substances.

Compositions, methods, and systems for analyzing the protein corona are described herein, as well as its application in the discovery of advanced diagnostic tools as well as therapeutic targets.

A method is described for identifying high affinity monoclonal antibody heavy and light chain pairs from high throughput screens of antibody producing cell libraries such as B-cell and hybridoma libraries. Specifically, the method relates to application of reversed immunocapture and high resolution tandem mass spectrometry for the identification of heavy and light chain pairs of binding antibodies obtained from high throughput screens of antibody producing cell libraries.

A method of identifying a subject at risk of a disease or disorder associated with amyloid aggregation includes assaying for Aggregatin in a bodily sample obtained from the subject, wherein the subject is at risk of having the disease or disorder if the Aggregatin is present above a threshold level.

The present invention relates to the technical field of chemical analysis and quantitative detection, in particular to a quantitative detection method for snake venom thrombin-like enzyme (SVTLE) from Agkistrodon halys pallas. The quantitative detection method for the SVTLE includes the following steps of taking a reference substance of marker peptide for the SVTLE from Agkistrodon halys pallas with an amino acid sequence of LDSPVSNSAHIAPLSLPSSAPSVGSVCR, and preparing a series of reference solutions with different concentrations; adding the reference solutions in test solutions respectively for enzymolysis, and then taking a supernatant after enzymolysis as a series of solutions to be detected; and adding the solutions to be detected in a liquid chromatogram-mass spectrometer, and then selecting a qualitative ion pair and a quantitative ion pair to detect contents of marker peptide in the solutions to be detected.

The present invention relates to the field of chemical analysis detection and application, in particular to a marker peptide of snake venom thrombin-like enzymes (SVTLEs) from Agkistrodon Halys Pallas and an application thereof. The amino acid sequence of the marker peptide of snake venom thrombin-like enzymes (SVTLEs) from Agkistrodon Halys Pallas is TLCAGVMEGGIDTCNR. Characterizing the source of species and a content of the SVTLEs in a to-be-detected sample by using the marker peptide includes the following steps of: pretreating the to-be-detected sample by trypsin through enzymolysis, and taking a supernatant of an enzymolysis liquid as a test solution; and injecting the test solution and a reference solution into a liquid chromatography-mass spectrometer, and selecting a qualitative ion pair and a quantitative ion pair for detecting the source of species and a content of the SVTLEs in the to-be-detected sample.

The production and use of semiconducting nanopost arrays made by nanofabrication is described herein. These nanopost arrays (NAPA) provide improved laser ionization yields and controllable fragmentation with switching or modulation capabilities for mass spectrometric detection and identification of samples deposited on them.