title: Non-stochastic and stochastic linear indices of the 'molecular pseudograph's atom adjacency matrix': application to 'in silico' studies for the rational discovery of new antimalarial compounds.
abstract: Malaria is one of the most deadly diseases, affecting million of people especially in developing countries. Because of the rapidly increasing threat worldwide of malaria epidemics multidrugs resistant to therapies, there is an urgent global need to discover new classes of antimalarial compounds. In an effort to overcome this problem, we have investigated the use of structure-based classification models for the 'rational' selection/identification or design/optimization of new lead antimalarials from virtual combinatorial data sets. In this sense, TOpological MOlecular COMputer Design strategy (TOMOCOMD approach) has been introduced in order to obtain two quantitative models for the discrimination of antimalarials. A collected data set containing 597 antimalarial compounds is presented as a helpful tool not only for theoretical chemist but for other researchers in this area. The validated models (including non-stochastic and stochastic indices) classify correctly more than 90% of compounds in both training and external prediction data sets. They showed high Matthews' correlation coefficients; 0.87 and 0.82 for training and 0.86 and 0.79 for test set. The TOMOCOMD-CARDD approach implemented in this work was successfully compared with two of the most useful models for antimalarials selection reported so far. Thus we expect that these two QSAR models can be used in the identification of previously un-known antimalarials compounds.
authors.affiliation: Department of Pharmacy, Faculty of Chemical-Pharmacy. Central University of Las Villas, Santa Clara, 54830 Villa Clara, Cuba.
authors.forename: Yovani
authors.initials: Y
authors.lastname: Marrero-Ponce
authors.forename: Alina
authors.initials: A
authors.lastname: Montero-Torres
authors.forename: Carlos Romero
authors.initials: CR
authors.lastname: Zaldivar
authors.forename: Maité Iyarreta
authors.initials: MI
authors.lastname: Veitía
authors.forename: Mariuchy Mayón
authors.initials: MM
authors.lastname: Peréz
authors.forename: Rory N García
authors.initials: RN
authors.lastname: Sánchez
mesh_terms: D000962:Antimalarials / Q000737:chemistry* / Q000494:pharmacology*; D015195:Drug Design; D013269:Stochastic Processes
chemical_list: D000962:Antimalarials