Girard, A. et al. (2021) Raman spectroscopic analysis of skin as a diagnostic tool for Human African Trypanosomiasis. PLoS Pathogens, 17(11), e1010060. (doi: 10.1371/journal.ppat.1010060) (PMID:34780575) (PMCID:PMC8629383)
![[thumbnail of 259705.pdf]](https://eprints.gla.ac.uk/style/images/fileicons/text.png) |
Text
259705.pdf - Published Version Available under License Creative Commons Attribution. 2MB |
Abstract
Human African Trypanosomiasis (HAT) has been responsible for several deadly epidemics throughout the 20th century, but a renewed commitment to disease control has significantly reduced new cases and motivated a target for the elimination of Trypanosoma brucei gambiense-HAT by 2030. However, the recent identification of latent human infections, and the detection of trypanosomes in extravascular tissues hidden from current diagnostic tools, such as the skin, has added new complexity to identifying infected individuals. New and improved diagnostic tests to detect Trypanosoma brucei infection by interrogating the skin are therefore needed. Recent advances have improved the cost, sensitivity and portability of Raman spectroscopy technology for non-invasive medical diagnostics, making it an attractive tool for gambiense-HAT detection. The aim of this work was to assess and develop a new non-invasive diagnostic method for T. brucei through Raman spectroscopy of the skin. Infections were performed in an established murine disease model using the animal-infective Trypanosoma brucei brucei subspecies. The skin of infected and matched control mice was scrutinized ex vivo using a confocal Raman microscope with 532 nm excitation and in situ at 785 nm excitation with a portable field-compatible instrument. Spectral evaluation and Principal Component Analysis confirmed discrimination of T. brucei-infected from uninfected tissue, and a characterisation of biochemical changes in lipids and proteins in parasite-infected skin indicated by prominent Raman peak intensities was performed. This study is the first to demonstrate the application of Raman spectroscopy for the detection of T. brucei by targeting the skin of the host. The technique has significant potential to discriminate between infected and non-infected tissue and could represent a unique, non-invasive diagnostic tool in the goal for elimination of gambiense-HAT as well as for Animal African Trypanosomiasis (AAT).
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bradley, Mrs Barbara and Marchesi, Dr Francesco and Asiala, Dr Steven and MacLeod, Professor Annette and Gibbins, Dr Matt and Graham, Professor Duncan and Quintana, Dr Juan and Marti, Professor Matthias and Capewell, Dr Paul and Cooper, Dr Anneli and Girard, Dr Alexandre and Garside, Professor Paul and Hentzschel, Dr Franziska and O'Connell, Dr Caroline |
| Creator Roles: | Girard, A.Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review and editing Cooper, A.Investigation, Methodology, Supervision, Writing – original draft, Writing – review and editing Bradley, B.Investigation, Methodology, Writing – review and editing Asiala, S.Supervision, Validation, Writing – review and editing Clucas, C.Investigation, Methodology, Writing – review and editing Capewell, P.Investigation, Methodology, Writing – original draft, Writing – review and editing Marchesi, F.Formal analysis, Investigation, Writing – review and editing Gibbins, M. P.Investigation, Resources, Writing – review and editing Hentzschel, F.Investigation, Writing – review and editing Marti, M.Resources, Writing – review and editing Quintana, J. F.Formal analysis, Validation, Writing – review and editing Garside, P.Conceptualization, Methodology, Writing – review and editing MacLeod, A.Conceptualization, Funding acquisition, Resources, Supervision, Writing – original draft, Writing – review and editing Graham, D.Conceptualization, Funding acquisition, Resources, Supervision, Writing – original draft, Writing – review and editing |
| Authors: | Girard, A., Cooper, A., Mabbott, S., Bradley, B., Asiala, S., Jamieson, L., Clucas, C., Capewell, P., Marchesi, F., Gibbins, M. P., Hentzschel, F., Marti, M., Quintana, J. F., Garside, P., Faulds, K., MacLeod, A., and Graham, D. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine College of Science and Engineering > School of Chemistry |
| Research Centre: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Immunobiology |
| Journal Name: | PLoS Pathogens |
| Publisher: | Public Library of Science |
| ISSN: | 1553-7366 |
| ISSN (Online): | 1553-7374 |
| Published Online: | 15 November 2021 |
| Copyright Holders: | Copyright © 2021 Girard et al. |
| First Published: | First published in PLoS Pathogens 17(11): e1010060 |
| Publisher Policy: | Reproduced under a Creative Commons License |
| Data DOI: | 10.15129/73010fd1-4bed-4224-9c01-ca62fae149d8 |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information