Chad R. Borges

Influx and efflux of amphetamine and N-acetylamphetamine in keratinocytes, pigmented melanocytes, and nonpigmented melanocytes.

Dopamine biosynthesis is regulated by S-glutathionylation. Potential mechanism of tyrosine hydroxylast inhibition during oxidative stress.

Mass mapping sites of nitration in tyrosine hydroxylase: random vs selective nitration of three tyrosine residues.

Cocaine, benzoylecgonine, amphetamine, and N-acetylamphetamine binding to melanin subtypes.

Ofloxacin as a reference marker in hair of various colors.

Recognition of cysteine-containing peptides through prompt fragmentation of the 4-dimethylaminophenylazophenyl-4'-maleimide derivative during analysis by MALDI-MS.

Automated data interpretation based on the concept of "negative signature mass" for mass-mapping disulfide structures of cystinyl proteins.

The effect of hair color on the incorporation of codeine into human hair.

Algorithm-assisted elucidation of disulfide structure: application of the negative signature mass algorithm to mass-mapping the disulfide structure of the 12-cysteine transforming growth factor beta type II receptor extracellular domain.

Concept for facilitating analyst-mediated interpretation of qualitative chromatographic-mass spectral data: an alternative to manual examination of extracted ion chromatograms.

Analysis of a challenging subset of World Anti-Doping Agency-banned steroids and antiestrogens by LC-MS-MS.

Detection of bumetanide in an over-the-counter dietary supplement.

Population studies of Vitamin D Binding Protein microheterogeneity by mass spectrometry lead to characterization of its genotype-dependent O-glycosylation patterns.

Population studies of intact vitamin D binding protein by affinity capture ESI-TOF-MS.

Glycosylation status of vitamin D binding protein in cancer patients.

Full-length characterization of proteins in human populations.

Possibilities and pitfalls in quantifying the extent of cysteine sulfenic acid modification of specific proteins within complex biofluids.

Cysteine sulfenic acid as an intermediate in disulfide bond formation and nonenzymatic protein folding.

Intrapersonal and populational heterogeneity of the chemokine RANTES.

C-peptide microheterogeneity in type 2 diabetes populations.

Building multidimensional biomarker views of type 2 diabetes on the basis of protein microheterogeneity.

Mass spectrometric immunoassay of intact insulin and related variants for population proteomics studies.

Mass spectrometric immunoassay revisited.

Revealing the allosterome: systematic identification of metabolite-protein interactions.

RNA-protein binding interface in the telomerase ribonucleoprotein.

Multiplexed surrogate analysis of glycotransferase activity in whole biospecimens.

Mass spectrometric immunoassay and MRM as targeted MS-based quantitative approaches in biomarker development: potential applications to cardiovascular disease and diabetes.

Techniques for the analysis of cysteine sulfhydryls and oxidative protein folding.

The application of multiple reaction monitoring and multi-analyte profiling to HDL proteins.

Parallel workflow for high-throughput (>1,000 samples/day) quantitative analysis of human insulin-like growth factor 1 using mass spectrometric immunoassay.

Elevated plasma albumin and apolipoprotein A-I oxidation under suboptimal specimen storage conditions.

Oxidative protein folding: nature's knotty challenge.

Mass Spectrometric Immunoassay for the qualitative and quantitative analysis of the cytokine Macrophage Migration Inhibitory Factor (MIF).

Serum amyloid a truncations in type 2 diabetes mellitus.

Gamma-carboxylation and fragmentation of osteocalcin in human serum defined by mass spectrometry.

Ebselen inhibits QSOX1 enzymatic activity and suppresses invasion of pancreatic and renal cancer cell lines.

Characterization of additional vitamin D binding protein variants.

Development of quantitative mass spectrometric immunoassay for serum amyloid A.

Glycan structure of Gc Protein-derived Macrophage Activating Factor as revealed by mass spectrometry.

Chicken albumin exhibits natural resistance to glycation.

Bacterial expression, correct membrane targeting and functional folding of the HIV-1 membrane protein Vpu using a periplasmic signal peptide.

Variations in native protein glycation and plasma antioxidants in several birds of prey.

A spin column-free approach to sodium hydroxide-based glycan permethylation.

Ex vivo instability of glycated albumin: A role for autoxidative glycation.

Stage Dependence, Cell-Origin Independence, and Prognostic Capacity of Serum Glycan Fucosylation, β1-4 Branching, β1-6 Branching, and α2-6 Sialylation in Cancer.

Behavior of blood plasma glycan features in bladder cancer.

Delta-S-Cys-Albumin: A Lab Test that Quantifies Cumulative Exposure of Archived Human Blood Plasma and Serum Samples to Thawed Conditions.

Diagnostic and Prognostic Performance of Blood Plasma Glycan Features in the Women Epidemiology Lung Cancer (WELCA) Study.