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Sodelli LF, Silva OD, Araújo BJN, Camargo-Mathias MI. Liver and spleen of hosts of Rhipicephalus linnaei exposed to synthetic (afoxolaner) and natural acaricides (esters from castor oil). A comparative clinical-morphological study. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2023; 32:e004023. [PMID: 37466625 PMCID: PMC10399553 DOI: 10.1590/s1984-29612023041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/30/2023] [Indexed: 07/20/2023]
Abstract
In dogs, Rhipicephalus linnaei transmits pathogens such as Ehrlichia canis, Babesia vogeli, and Hepatozoon canis. The veterinary market has synthetic acaricides to ticks control. Esters derived from castor oil are efficient. However, there is little information about their effects on non-target organisms. This work consisted of a clinical (AST, ALT, and ALP) and histological and histochemical analysis (liver and spleen) of female rabbits exposed to these esters and afoxolaner. The rabbits were divided into three groups: control group (CG) received Bandeirante® rabbit feed; the afoxolaner treatment (TG1) received rabbit feed and two doses of afoxolaner; castor oil esters treatment (TG2) received rabbit feed enriched with esters (1.75 g esters/kg). No alterations were observed in the AST, ALT, and ALP enzymes in exposure to esters TG2. Rabbits from TG1 showed changes in AST. The liver of rabbits exposed to afoxolaner underwent histological and histochemical changes, such as steatosis and vacuolation, as well as poor protein labeling. Polysaccharides were intensely observed in the group exposed to esters. The spleen showed no changes in any of the exposure. Esters from castor oil caused fewer liver changes when incorporated into the feed and fed to rabbits than exposure to afoxolaner.
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Affiliation(s)
- Luís Fernando Sodelli
- Departamento de Biologia Geral e Aplicada, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Rio Claro, SP, Brasil
| | - Odaiza da Silva
- Departamento de Biologia Geral e Aplicada, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Rio Claro, SP, Brasil
| | - Bruna Jéssyca Nascimento Araújo
- Departamento de Biologia Geral e Aplicada, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Rio Claro, SP, Brasil
| | - Maria Izabel Camargo-Mathias
- Departamento de Biologia Geral e Aplicada, Instituto de Biociências, Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Rio Claro, SP, Brasil
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Netto JB, Melo ESA, Oliveira AGS, Sousa LR, Santiago LR, Santos DM, Chagas RCR, Gonçalves AS, Thomé RG, Santos HB, Reis RM, Ribeiro RIMA. Matteucinol combined with temozolomide inhibits glioblastoma proliferation, invasion, and progression: an in vitro, in silico, and in vivo study. Braz J Med Biol Res 2022; 55:e12076. [PMID: 36000612 PMCID: PMC9394692 DOI: 10.1590/1414-431x2022e12076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/20/2022] [Indexed: 11/22/2022] Open
Abstract
Glioblastoma is the most prevalent and malignant brain tumor identified in adults. Surgical resection followed by radiotherapy and chemotherapy, mainly with temozolomide (TMZ), is the chosen treatment for this type of tumor. However, the average survival of patients is around 15 months. Novel approaches to glioblastoma treatment are greatly needed. Here, we aimed to investigate the anti-glioblastoma effect of the combination of matteucinol (Mat) (dihydroxyflavanone derived from Miconia chamissois Naudin) with the chemotherapeutic TMZ in vitro using tumor (U-251MG) and normal astrocyte (NHA) cell lines and in vivo using the chick embryo chorioallantoic membrane (CAM) assay. The combination was cytotoxic and selective for tumor cells (28 μg/mL Mat and 9.71 μg/mL TMZ). Additionally, the combination did not alter cell adhesion but caused morphological changes characteristic of apoptosis in vitro. Notably, the combination was also able to reduce tumor growth in the chick embryo model (CAM assay). The docking results showed that Mat was the best ligand to the cell death membrane receptor TNFR1 and to TNFR1/TMZ complex, suggesting that these two molecules may be working together increasing their potential. In conclusion, Mat-TMZ can be a good candidate for pharmacokinetic studies in view of clinical use for the treatment of glioblastoma.
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Affiliation(s)
- J B Netto
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - E S A Melo
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | | | - L R Sousa
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - L R Santiago
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - D M Santos
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - R C R Chagas
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - A S Gonçalves
- Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Vila Velha, ES, Brasil.,Universidade Federal do Espírito Santo, Goiabeiras, ES, Brasil
| | - R G Thomé
- Laboratório de Processamento de Tecidos, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - H B Santos
- Laboratório de Processamento de Tecidos, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
| | - R M Reis
- Centro de Pesquisa em Oncologia Molecular, Hospital do Câncer de Barretos, Barretos, SP, Brasil.,Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - R I M A Ribeiro
- Laboratório de Patologia Experimental, Universidade Federal de São João del-Rei, Divinópolis, MG, Brasil
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Alli S, Dulger G, Kiliccioglu I, Alli A, Dulger B. Castor oil—based graft copolymers: synthesis, characterization antimicrobial activity and antiproliferative effects against breast cancer cell lines. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03908-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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