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Raman and FTIR spectroscopy in determining the chemical changes in healthy brain tissues and glioblastoma tumor tissues.
Depciuch, J; Tolpa, B; Witek, P; Szmuc, K; Kaznowska, E; Osuchowski, M; Król, P; Cebulski, J.
Afiliação
  • Depciuch J; Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, Poland. Electronic address: joanna.depciuch@ifj.edu.pl.
  • Tolpa B; Department of Neurosurgery, Clinical Hospital Nr 2 in Rzeszow, Lwowska 60, 35-309, Poland.
  • Witek P; Faculty of Mathematics and Natural Sciences, Centre of Innovation and Transfer of Natural Sciences and Engineering Knowledge, University of Rzeszow, Pigonia 1, 35-959 Rzeszow, Poland.
  • Szmuc K; Faculty of Mathematics and Natural Sciences, Centre of Innovation and Transfer of Natural Sciences and Engineering Knowledge, University of Rzeszow, Pigonia 1, 35-959 Rzeszow, Poland.
  • Kaznowska E; Department of Patomorphology, Chair of Morphological Sciences, Medical Faculty, University of Rzeszow, Kopisto 2a, 35-959, Poland.
  • Osuchowski M; Department of Patomorphology, Chair of Morphological Sciences, Medical Faculty, University of Rzeszow, Kopisto 2a, 35-959, Poland.
  • Król P; Department of Physical Education, University of Rzeszow, Towarnickiego 3, 35-959 Rzeszów, Poland.
  • Cebulski J; Faculty of Mathematics and Natural Sciences, Centre of Innovation and Transfer of Natural Sciences and Engineering Knowledge, University of Rzeszow, Pigonia 1, 35-959 Rzeszow, Poland.
Spectrochim Acta A Mol Biomol Spectrosc ; 225: 117526, 2020 Jan 15.
Article em En | MEDLINE | ID: mdl-31655362
Glioblastoma, also called glioblastoma multiforme (GBM), is a particularly malignant form of primary brain tumor. This cancer accounts for 12-15% of all brain tumors. Despite the advances in neurosurgery, radio and chemotherapy the average survival rate is only 12.1-16.6 months. This is due not only to the late diagnosis of the disease, but also to ineffective treatment methods which result from the still low knowledge about the causes of glioblastoma development. Therefore, it is very important to look for new diagnostic methods of detection of the smallest features of cancer. Raman and infrared spectroscopy (FTIR) can be such methods. In this paper we discuss the chemical composition of sample glioblastoma brain tissues and marginal brain tissues using these two spectroscopy methods. Raman and FTIR spectra of cancer brain tissues showed that the highest differences in the chemical composition, compared to the control brain tissue, occur in the areas corresponding to lipids, collagen and proteins. Moreover, Raman spectroscopy also showed significant changes in the cancer tissues in the phosphatidylcholine and sphingomyelin. Interestingly, FTIR spectra after Kramers-Kronig transformations showed signals only for three peaks which corresponded to the vibrations of lipid function groups. Adjustment of the Lorenz function for these three peaks showed that only in the case of cancerous tissues the number of matching lines is different, compared to the control and marginal tissues. Therefore, we assume that lipids could be a spectroscopic marker for brain tumor. Furthermore, principal component analysis (PCA) showed that chemical changes seen between cancer and control tissues are significant and it is possible to differentiate the infected tissue from the healthy one. Interestingly, the PCA analysis also showed that adjacent brain tissues have different chemical composition than the control tissues.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Química Encefálica / Neoplasias Encefálicas / Glioblastoma Limite: Aged / Female / Humans / Male / Middle aged Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Química Encefálica / Neoplasias Encefálicas / Glioblastoma Limite: Aged / Female / Humans / Male / Middle aged Idioma: En Ano de publicação: 2020 Tipo de documento: Article