1994
DOI: 10.1016/0006-8993(94)91041-3
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31P NMR phospholipid characterization of intracranial tumors

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Cited by 12 publications
(12 citation statements)
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“…It is still uncertain if MRS will provide a valid mean to address the complex issue of tumor classification, although several studies report patterns of change associated with tumor type [8][9][10][11][12][13][14][15] and in spite of the large efforts to develop classifiers that has been made, as illustrated in the present review. We have tried to compare the results of several studies with each other to address the choice of methodology.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…It is still uncertain if MRS will provide a valid mean to address the complex issue of tumor classification, although several studies report patterns of change associated with tumor type [8][9][10][11][12][13][14][15] and in spite of the large efforts to develop classifiers that has been made, as illustrated in the present review. We have tried to compare the results of several studies with each other to address the choice of methodology.…”
Section: Discussionmentioning
confidence: 99%
“…Only in some studies, have single resonances or ratios of resonance ranges been reported to have a discriminatory power. [2][3][4][5][6][7]14 In parallel, reports about patterns of spectral changes associated with given tumor types, [8][9][10][11][12][13][14][15] celltypes [16][17][18] and disease states 19 have been published. To permit the analysis of tumor specific MRS patterns and their use for tumor classification, several methods, denoted pattern recognition (PR) methods, are available.…”
Section: Introductionmentioning
confidence: 99%
“…Os espectros mostram a presença do grupo fosfato da FC na região de -0,9 ppm, em concordância com espectros da literatura obtidos nas mesmas condições. 24,25 O pico com deslocamento químico de -0,2 ppm observado na amostra FC-padrão corresponde ao grupo fosfato da lisofosfatidilcolina, segundo a literatura, 24 indicando que este é o primeiro produto de degradação. Na Figura 4a verifica-se que a amostra FC-2 não apresenta pico em -0,2 ppm, podendo-se concluir que a purificação através de CC foi obtida com sucesso e que a razão igual a 2,99 ± 0,25 (RMN de 1 H) corresponde à FC de alta pureza (superior a 95%).…”
Section: Resultsunclassified
“…Surpreendentemente, apenas alguns trabalhos são encontrados, os quais descrevem o uso de RMN de 31 P para a identificação de fosfolipídeos presentes nas membranas do cérebro humano e em anêmonas do mar. 24,25 O objetivo deste trabalho é apresentar uma metodologia para a avaliação do grau de pureza da FC da lecitina de soja, empregando a espectroscopia de RMN de 1 H e de 31 P. Dois métodos de purificação foram empregados. O primeiro, um processo de extração, foi empregado para eliminar os ácidos graxos da lecitina de soja bruta.…”
Section: Introductionunclassified
“…To our knowledge, few studies have investigated the phospholipid composition of brain tumors by means of in vitro 31 P-MRS of organic extracts from tissue biopsies (15)(16)(17). Unlike in vivo 31 P-MRS and in vitro 31 P-MRS of aqueous extracts, this method can detect and quantify individually the major membrane phospholipids.…”
Section: Introductionmentioning
confidence: 99%