Surface enhanced Raman spectroscopy of RNA samples extracted from blood of hepatitis C patients for quantification of viral loads
| Autor: | Asma Rehman, Shamsheer Ahmad, Muhammad Naeem Ashraf, Saira Bano, Sidra Rafiq, Nosheen Rashid, Saira Nasir, Muhammad Abubakar, Haq Nawaz, Muhammad Irfan Majeed, Saqib Ali, Sidra Farooq, Imran Amin, Muhammad Kashif |
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| Rok vydání: | 2020 |
| Předmět: |
Silver
Hepatitis C virus 030303 biophysics Biophysics Metal Nanoparticles Dermatology Hepacivirus medicine.disease_cause Spectrum Analysis Raman 030207 dermatology & venereal diseases 03 medical and health sciences symbols.namesake 0302 clinical medicine medicine Humans Pharmacology (medical) Hepatitis 0303 health sciences Chromatography Photosensitizing Agents Chemistry RNA Hepatitis C Surface-enhanced Raman spectroscopy Viral Load medicine.disease Oncology Photochemotherapy symbols Raman spectroscopy Viral load Quantitative analysis (chemistry) |
| Zdroj: | Photodiagnosis and photodynamic therapy. 33 |
| ISSN: | 1873-1597 |
| Popis: | Background Raman spectroscopy is a promising technique to analyze the body fluids for the purpose of non-invasive disease diagnosis. Objectives To develop a surface-enhanced Raman spectroscopy (SERS) based method for qualitative and quantitative analysis of HCV from blood samples. Methods SERS was employed to characterize the Hepatitis C viral RNA extracted from different blood samples of hepatitis C virus (HCV) infected patients with predetermined viral loads in comparison with total RNA of healthy individuals. The SERS measurements were performed on 27 extracted RNA samples including low viral loads, medium viral loads, high viral loads and healthy/negative viral load samples. For this purpose, silver nanoparticles (Ag NPs) were used as SERS substrates. Furthermore, multivariate data analysis technique, Principal Component Analysis (PCA) and Partial Least Square Regression (PLSR) were also performed on SERS spectral data. Results The SERS spectral features due to biochemical changes in the extracted RNA samples associated with the increasing viral loads were established which could be employed for HCV diagnostic purpose. PCA was found helpful for the differentiation between Raman spectral data of RNA extracted from hepatitis infected and healthy blood samples. PLSR model is established for the determination of viral loads in HCV positive RNA samples with 99 % accuracy. Conclusion SERS can be employed for qualitative and quantitative analysis of HCV from blood samples. |
| Databáze: | OpenAIRE |
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