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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Nonlinear optical responses of oxidized low-density lipoprotein: Cutoff point for z-scan peak-valley distance

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Author(s):
Pruper de Freitas, Maria Camila [1] ; Figueiredo Neto, Antonio Martins [2] ; Damasceno, Nagila Raquel [1, 3]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Fac Publ Hlth, Dept Nutr, Av Dr Arnaldo 715, BR-01246904 Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Inst Phys, R Matao 1371, BR-05508090 Sao Paulo, SP - Brazil
[3] Figueiredo Neto, Antonio Martins, Univ Sao Paulo, Inst Phys, R Matao 1371, BR-05508090 Sao Paulo, SP, Brazil.Pruper de Freitas, Maria Camila, Univ Sao Paulo, Fac Publ Hlth, Dept Nutr, Av Dr Arnaldo 715, BR-01246904 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Photodiagnosis and Photodynamic Therapy; v. 30, JUN 2020.
Web of Science Citations: 0
Abstract

The development of new methods to assess biomarkers of cardiovascular disease is currently a subject of scientific research. This article broadens our view of nonlinear optical responses of oxidized low density lipoprotein (LDL) evaluated using the Z-scan peak-valley distance and proposes a cutoff point. We investigated the association of peak-valley distance and some cardiovascular risk factors related with sociodemographic, clinical and anthropometric profiles and plasma biomarkers such as lipid and glucose profile, apolipoprotein, lipoprotein subfractions and omega 3 fatty acids. Z-scan analysis was performed using isolated LDL after ultracentrifugation in human blood samples collected after fasting. Peak-valley distance is a parameter that decreases directly depending on the oxidizability of LDL. As peak-valley distance was associated with relevant biomarkers of cardiovascular risk, we tested cutoff points for categorization and the best results were obtained using percentile < 75 (Low(z-sca)(n)) and percentile >= 75 (High(z-scan)). The regression logistic models tested after establishing the cutoff point for peak-valley distance showed that increased levels of plasma high-density lipoprotein cholesterol, apolipoprotein A-I, large high-density lipoprotein subfractions and docosahexaenoic acid are directly associated with High(z-scan). Conversely, high levels of small LDL were associated with decreased odds of presenting High(z-scan) In conclusion, the cutoff point for peak-valley distance was able to identify atherogenic characteristics of LDL and its relationship with some parameters of high-density lipoprotein functionality. (AU)

FAPESP's process: 11/12523-2 - Physical and chemical properties of LDL and HDL, cardiometabolic and oxidative markers can be modulate by consumption of ômega-3, ômega-6 e ômega-9 in adult subjects?
Grantee:Nágila Raquel Teixeira Damasceno
Support type: Regular Research Grants