Advanced search
Start date

Computational Study of Electrochemical Properties Related to the Degradation of Endocrine Disruptors

Grant number: 18/19103-8
Support Opportunities:Scholarships in Brazil - Post-Doctorate
Effective date (Start): January 01, 2019
Effective date (End): July 31, 2023
Field of knowledge:Engineering - Sanitary Engineering - Water Supply and Wastewater Treatment
Principal Investigator:Marcos Roberto de Vasconcelos Lanza
Grantee:Michell de Oliveira Almeida
Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination, AP.TEM
Associated scholarship(s):20/03166-0 - Computational study of modified amorphous carbon structures with metal oxide nanoparticles for hydrogen peroxide electrogeneration, BE.EP.PD


This project proposes the use of computational techniques to understand process of electrochemical degradation, generation of subproducts and prediction of reactivity sites of five molecules that act as endocrine disruptors (ibuprofen, estradiol, ciprofloxacin, malathion e acetochlor). In addition, a chemical-biological analysis of two hormone receptors (progesterone receptor and sex hormone-binding globulin) will be perform and the possible interactions that may exist with three molecules used in plastics, and we propose the change of DEHP (considered an endocrine disruptor) by two possible substitutes (DL9TH and ATEC). So, important methodologies will be used in the electronic study of molecular structures, such as (i) the choice of the basis set to be used in the calculations from the comparison of the theoretical values (obtained from TD-DFT, implemented in Gaussian09) and experimental values of absorption »max; (ii) geometric optimization of the five endocrine disruptors and calculation of the energy values of HOMO, LUMO, SOMO and the atomic charges, which will be related to electrochemical data; (iii) NBO analysis from the donor-acceptor point of view of electronic pair, allowing the description of possible electronic transfers; (iv) use of the QTAIM methodology in order to determine the types of bonds and the possible sites of reactivity. The second part of the project involves the study of the two hormone receptors and the molecules DEHP, DL9TH and ATEC, in which the following methods will be used: (v) molecular docking to simulate the three molecules in the active sites of the receptors and obtaining possible bioactive conformations; (vi) molecular dynamics simulations to evaluate the dynamic behavior of DEHP, DL9TH and ATEC at the biological receptors; (vii) calculations of binding free energy with the MM-GBSA and MM-PBSA methods to evaluate the stability of the three compounds interacting with the hormone receptors and (viii) use of a tool implemented in Amber 18 to calculate the redox potential of the three molecules interacting with the two selected receptors. In this way, the use of the computational methodologies cited above will be fundamental for the electronic and chemical-biological study of endocrine disruptors.

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALMEIDA, MICHELL O.; LANZA, MARCOS R. V.; HONORIO, KATHIA M.. A study of possible substitutes for the endocrine disruptor DEHP in two hormone receptors. JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS, . (17/10118-0, 18/19103-8, 14/50945-4)
LUCCHETTI, LANNA E. B.; ALMEIDA, MICHELL O.; DE ALMEIDA, JAMES M.; AUTRETO, PEDRO A. S.; HONORIO, KATHIA M.; SANTOS, MAURO C.. Density functional theory studies of oxygen reduction reaction for hydrogen peroxide generation on Graphene-Based catalysts. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 895, . (18/19103-8, 17/10118-0, 19/01925-4)

Please report errors in scientific publications list by writing to: