1
|
Tavares da Rocha RE, de Almeida Júnior ASA, Júnior NCP, do Nascimento AV, Leite NMS, de Oliveira JF, Alves de Lima MDC, Feitosa APS, Bezerra de Mélo ME, Brayner FA, Alves LC. Synthesis, in vitro schistosomicidal activity and ultrastructural alterations caused by thiosemicarbazones and thiazolidinones against juvenile and adult Schistosoma mansoni worms (Sambon, 1907). Mol Biochem Parasitol 2022; 252:111520. [PMID: 36122704 DOI: 10.1016/j.molbiopara.2022.111520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 08/14/2022] [Accepted: 09/08/2022] [Indexed: 12/31/2022]
Abstract
Schistosomiasis is a neglected disease that affects about 258 million people worldwide. Caused by Schistosoma mansoni, helminth which, in Brazil, it is present on 19 states and capital. Praziquantel (PZQ) treatment presents low efficacy and adverse effects in parasites juvenile stages. Thiosemicarbazones and thiazolidinones are rising as potent chemical groups that have biological activity wide spectrum, and with radical modifications, they may become more effective and selective. Aiming to evaluate the action of these molecules against S. mansoni, JF series thiosemicarbazones and thiazolidinones (LqIT/UFPE) were synthesized: JF30, JF31, JF33, JF34, JF35, JF36, JF38, JF39, JF42 and JF43. Several parameters were evaluated, such as: their cytotoxicity in VERO cells, in vitro schistosomicidal activity for juvenile and adult worms and their action on worms through ultrastructural changes. Cytotoxicity indices ranged from 272 µM to 725 µM. When evaluating mortality rate, adult and juvenile worms showed 100 % mortality rate within 24 h and 48 h, respectively, when exposed to the compounds JF31 and JF43 at a dose of 200 µM. Also, motility, mortality and oviposition parameters were evaluated: JF31 and JF43 presented a score of 0 in 24 h, meaning total absence of movement, whereas no eggs and soft tissue damage were observed under optical microscopy. Through scanning electron microscopy, integumentary alterations caused by the compounds JF31 and JF43 were observed, such as: exposure of the musculature, formation of integumentary bubbles, integuments with abnormal morphology and destruction of tubercles and spikes. The results shoerd that the compound JF31 was 2.39 times more selective for adult worms and JF43 was 3.74 times more selective for juvenile worms. Thus, the compounds JF43 and JF31 are the most promising for presenting schistosomicidal activity of S. mansoni.
Collapse
Affiliation(s)
- Rubens Emanoel Tavares da Rocha
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil.
| | | | - Nairomberg Cavalcanti Portela Júnior
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| | - Amanda Vasconcelos do Nascimento
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| | | | | | | | - Ana Paula Sampaio Feitosa
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| | - Maria Eliane Bezerra de Mélo
- Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| | - Fábio André Brayner
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| | - Luiz Carlos Alves
- Federal University of Pernambuco (UFPE), Keizo Asami Institute, 50740-465 Recife, PE, Brazil; Aggeu Magalhães Institute, Oswaldo Cruz Foundation (IAM-FIOCRUZ), Department of Parasitology, 50740-465 Recife, PE, Brazil
| |
Collapse
|
2
|
de Almeida Júnior ASA, de Oliveira JF, da Silva AL, da Rocha RET, Junior NCP, Gouveia ALA, da Silva RMF, de Azevedo Albuquerque MCP, Brayner FA, Alves LC, do Carmo Alves de Lima M. In vitro activity, ultrastructural studies and in silico pharmacokinetic properties of indol-3-yl-thiosemicarbazones derivatives and analogues against juvenile and adult worms of S. mansoni. Eur J Pharm Sci 2019; 138:104985. [PMID: 31283945 DOI: 10.1016/j.ejps.2019.104985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/21/2019] [Accepted: 07/03/2019] [Indexed: 12/13/2022]
Abstract
The present work aimed to carry out in vitro biological assays of indol-3-yl derivatives thiosemicarbazones (2a-e) and 4-thiazolidinones (3a-d) against juvenile and adult worms of S. mansoni, as well as the in silico determination of pharmacokinetic parameters for the prediction of the oral bioavailability of these derivatives. All compounds were initially screened at a concentration of 200 μM against S. mansoni adult worms and the results evidenced the good activity of compounds 2b, 2d and 3b, which caused 100% mortality after 24, 48 and 72 h, respectively. Subsequent studies with these same compounds revealed that compound 2b was able to reduce the viability of the parasites by 85% and 83% at concentrations of 200 and 100 μM, respectively. In relation to the juvenile worms, all compounds (2b, 2d and 3b) were able to cause mortality, but compound 2b demonstrated better activity causing 100% mortality in 48 h. Additionally, it was possible to observe reduction in the viability of juvenile worms of 85%, 81% and 64% at concentrations of 200, 100 and 50 μM, respectively. Several ultrastructural damages were observed when adult and juvenile S. mansoni worms were exposed to compound 2b (200 μM) that was characterized by extensive destruction by the integument, which may justify the mortality rate of cultured parasites. In the DNA interaction assay, fragmentation of the genetic material of adult worms when treated with compound 2b (200 μM) was evidenced, indicating the apoptosis process as mechanism of parasite death. Regarding pharmacokinetic properties, all derivatives are according to the required parameters, predicting good oral bioavailability for the studied compounds. The results presented in this study reveal the good activity of compound 2b in both adult and juvenile worms of S. mansoni, pointing this compound as promising in the development of further studies on schistosomicidal activity.
Collapse
Affiliation(s)
- Antônio Sérgio Alves de Almeida Júnior
- Universidade Federal de Pernambuco (UFPE), Departamento de Antibióticos, 50670-901 Recife, PE, Brazil; Instituto Aggeu Magalhães, Fundação Oswaldo Cruz (IAM-FIOCRUZ), 50670-420 Recife, PE, Brazil
| | | | - Anekécia Lauro da Silva
- Universidade Federal do Vale do São Francisco (UNIVASF), Departamento de Medicina, 48607-190 Paulo Afonso, BA, Brazil
| | | | | | | | | | | | - Fábio André Brayner
- Instituto Aggeu Magalhães, Fundação Oswaldo Cruz (IAM-FIOCRUZ), 50670-420 Recife, PE, Brazil
| | - Luiz Carlos Alves
- Instituto Aggeu Magalhães, Fundação Oswaldo Cruz (IAM-FIOCRUZ), 50670-420 Recife, PE, Brazil
| | | |
Collapse
|