The goal of this project is to adapt the gold nanoparticle-based surface-enhanced Raman spectroscopy (SERS) technology to clinical application. In this exploratory study a measurement protocol will be established to subsequently investigate whether SERS allows to diagnose patients infected with typhoid fever as well as to stage the disease.
This study on the clinical application of surface-enhanced Raman spectroscopy (SERS) is composed of two parts. First, a SERS measurement protocol will be developed to enhance the interactions between gold nanoparticles and the components of the patients samples, maximizing Raman spectroscopical signatures. Given the complex composition of human blood, which encompasses numerous biological constituents, the study focuses on serum, a component obtained through centrifugation after the removal of cells and clotting factors. Fifteen spectra will be recorded per sample. The raw spectra will be post-processed, including removal of the substrate signal, baseline correction, vector normalization, and smoothing steps. The SERS measurement protocol established in the first section will subsequently be applied to samples of healthy and typhoid fever patients. The samples from infected patients will be confirmed with the Widal test. Multivariate data analysis will be performed to identify distinctive feature characteristics in the samples that correlate to their group (healthy and infected patients), allowing patient diagnosis, as well as the severity of the infection.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
SINGLE
Enrollment
30
The Raman spectra of patient samples will be measured in the presence of gold nanoparticles, which will enhance the spectroscopic characteristics of serum components via near-field enhancements.
Roger Molto Pallares
Aachen, Northwest, Germany
SERS measurements to differentiate between healthy and typhoid fever patients
SERS assessment of healthy and typhoid fever patient samples to identify unique spectroscopical characteristics to discriminate between healthy and typhoid fever patients
Time frame: Through study competition, up to 1 year
SERS measurements to stage typhoid fever patients
SERS assessment of early-stage and consolidated-stage typhoid fever patient samples to identify unique spectroscopical characteristics to stage the infection.
Time frame: Through study competition, up to 1 year
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