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Dantas CG, da Paixão AO, Nunes TLGM, Silva IJF, dos S. Lima B, Araújo AAS, de Albuquerque-Junior RLC, Gramacho KP, Padilha FF, da Costa LP, Severino P, Cardoso JC, Souto EB, Gomes MZ. Africanized Bee Venom ( Apis mellifera Linnaeus): Neuroprotective Effects in a Parkinson's Disease Mouse Model Induced by 6-hydroxydopamine. Toxics 2022; 10:583. [PMID: 36287863 PMCID: PMC9609968 DOI: 10.3390/toxics10100583] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
This study evaluated the neuroprotective effects of the Africanized bee venom (BV) and its mechanisms of action after 6-hydroxydopamine-(6-OHDA)-induced lesion in a mice model. Prior to BV treatment, mice received intrastriatal microinjections of 6-OHDA (no induced dopaminergic neuronal death) or ascorbate saline (as a control). BV was administered subcutaneously at different dosages (0.01, 0.05 or 0.1 mg·Kg-1) once every two days over a period of 3 weeks. The open field test was carried out, together with the immunohistochemical and histopathological analysis. The chemical composition of BV was also assessed, identifying the highest concentrations of apamin, phospholipase A2 and melittin. In the behavioral evaluation, the BV (0.1 mg·Kg-1) counteracted the 6-OHDA-induced decrease in crossings and rearing. 6-OHDA caused loss of dopaminergic cell bodies in the substantia nigra pars compacta and fibers in striatum (STR). Mice that received 0.01 mg·Kg-1 showed significant increase in the mean survival of dopaminergic cell bodies. Increased astrocytic infiltration occurred in the STR of 6-OHDA injected mice, differently from those of the groups treated with BV. The results suggested that Africanized BV has neuroprotective activity in an animal model of Parkinson's disease.
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Affiliation(s)
- Camila G. Dantas
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Ailma O. da Paixão
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Tássia L. G. M. Nunes
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Italo J. F. Silva
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Bruno dos S. Lima
- Department of Pharmacy, Federal University of Sergipe (U.F.S.), Cidade Universitária Prof. José Aloísio de Campos, Av. Marechal Rondon, Jardim Rosa Elze, São Cristóvão 49100-000, Sergipe, Brazil
| | - Adriano A. S. Araújo
- Department of Pharmacy, Federal University of Sergipe (U.F.S.), Cidade Universitária Prof. José Aloísio de Campos, Av. Marechal Rondon, Jardim Rosa Elze, São Cristóvão 49100-000, Sergipe, Brazil
| | | | - Kátia P. Gramacho
- Department of Animal Science, Rural Federal University of Semi-Árido (U.F.E.R.S.A), Av. Francisco Mota, Costa e Silva, Mossoró 49032-490, Natal, Brazil
| | - Francine F. Padilha
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Luiz P. da Costa
- Post-Graduation Program in Chemistry, Federal University of Sergipe (U.F.S.), Cidade Universitária Prof. José Aloísio de Campos, Av. Marechal Rondon, Jardim Rosa Elze, São Cristóvão 49100-000, Sergipe, Brazil
| | - Patricia Severino
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Juliana C. Cardoso
- Institute of Research and Technology, Tiradentes University, Av. Murilo Dantas, 300, Aracaju 49032-490, Sergipe, Brazil
| | - Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- REQUIMTE/UCIBIO, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Margarete Z. Gomes
- Department of Animal Science, Rural Federal University of Semi-Árido (U.F.E.R.S.A), Av. Francisco Mota, Costa e Silva, Mossoró 49032-490, Natal, Brazil
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de Vasconcelos ACP, Morais RP, Novais GB, da S Barroso S, Menezes LRO, Dos Santos S, da Costa LP, Correa CB, Severino P, Gomes MZ, Albuquerque Júnior RLC, Cardoso JC. In situ photocrosslinkable formulation of nanocomposites based on multi-walled carbon nanotubes and formononetin for potential application in spinal cord injury treatment. Nanomedicine 2020; 29:102272. [PMID: 32730980 DOI: 10.1016/j.nano.2020.102272] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 12/19/2022]
Abstract
Carbon nanotubes (CN) have been studied to treat spinal cord injuries because of its electrical properties and nanometric dimensions. This work aims to develop a photopolymerizable hydrogel containing CN functionalized with an anti-inflammatory molecule to be used in situ on spinal cord injuries. The CN functionalization step was done using the drug (formononetin). The nanocomposites were characterized by morphological analysis, FTIR, Raman Spectroscopy, thermal analysis and cytotoxicity assays (MTT and HET-CAM). The nanocomposites were incorporated into gelatin methacryloyl hydrogel and exposed to UV light for photopolymerization. The volume of the formulation and the UV exposition time were also analyzed. The CN characterization showed that formononetin acted as a functionalization agent. The functionalized CN showed safe characteristics and can be incorporated in photocrosslinkable formulation. The UV exposition time for the formulation photopolymerization was compatible with the cell viability and also occurred in the injury site.
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Affiliation(s)
| | | | | | | | | | | | - Luiz P da Costa
- Federal University of Amazonas (UFAM), Itacoatiara/AM, Brazil.
| | | | - Patrícia Severino
- Tiradentes University (UNIT), Aracaju/SE, Brazil; Technology and Research Institute (ITP), Aracaju/SE, Brazil.
| | - Margarete Z Gomes
- Tiradentes University (UNIT), Aracaju/SE, Brazil; Technology and Research Institute (ITP), Aracaju/SE, Brazil.
| | | | - Juliana C Cardoso
- Tiradentes University (UNIT), Aracaju/SE, Brazil; Technology and Research Institute (ITP), Aracaju/SE, Brazil.
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Fattori N, Maroneze CM, da Costa LP, Strauss M, Sigoli FA, Mazali IO, Gushikem Y. Ion-exchange properties of imidazolium-grafted SBA-15 toward AuCl4(-) anions and their conversion into supported gold nanoparticles. Langmuir 2012; 28:10281-10288. [PMID: 22697479 DOI: 10.1021/la301374z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Imidazolium groups were successfully prepared and grafted on the surface of SBA-15 mesoporous silica. The ion-exchange properties of the functionalized porous solid (SBA-15/R(+)Cl(-)) toward AuCl(4)(-) anions were evaluated through an ion-exchange isotherm. The calculated values of the equilibrium constant (log β = 4.47) and the effective ion-exchange capacity (t(Q) = 0.79 mmol g(-1)) indicate that the AuCl(4)(-) species can be loaded and strongly retained on the functionalized surface as counterions of the imidazolium groups. Subsequently, solids containing different amounts of AuCl(4)(-) ions were submitted to a chemical reduction process with NaBH(4), converting the anionic gold species into supported gold nanoparticles. The plasmon resonance bands, the X-ray diffraction patterns, and transmission electron microscopy images of the supported gold nanoparticles before and after thermal treatment at 973 K indicate that the metal nanostructures are highly dispersed and stabilized by the host environment.
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Affiliation(s)
- Natalia Fattori
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas, São Paulo (SP), Brazil
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Cestari AR, Vieira EFS, Vieira GS, da Costa LP, Tavares AMG, Loh W, Airoldi C. The removal of reactive dyes from aqueous solutions using chemically modified mesoporous silica in the presence of anionic surfactant-the temperature dependence and a thermodynamic multivariate analysis. J Hazard Mater 2009; 161:307-316. [PMID: 18471967 DOI: 10.1016/j.jhazmat.2008.03.091] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 03/19/2008] [Accepted: 03/20/2008] [Indexed: 05/26/2023]
Abstract
The three-parameter Sips adsorption model was successfully employed to modeled equilibrium adsorption data of a yellow and a red dye onto a mesoporous aminopropyl-silica, in the presence of the surfactant sodium dodecylbenzenesulfonate (DBS) from 25 to 55 degrees C. The results were evaluated in relation to the previously reported surface tension measurements. The presence of curvatures of the van()t Hoff plots suggested the presence of non-zero heat capacities terms (Delta(ads)C(p)). For the yellow dye, it is observed that the values of Delta(ads)H are almost all positive and they decrease in endothermicity, in the absence and in the presence of DBS, from 25 to 55 degrees C. For the red dye, there is an increase in endothermicity in relation to the temperature increase. The negative Delta(ads)G values indicate spontaneous adsorption processes. Almost all adsorption entropy values (Delta(ads)S) were positive. This suggests that entropy is a driving force of adsorption. The adsorption thermodynamic parameters were also evaluated using a new 2(3) full factorial design analysis. The multivariate polynomial modelings indicated that the thermodynamic parameters are also affected by important interactive effects of the experimental factors and not by the temperature changes alone.
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Affiliation(s)
- Antonio R Cestari
- Laboratory of Materials and Calorimetry, Departamento de Química/CCET, Universidade Federal de Sergipe, CEP 49100-000, São Cristóvão, Sergipe, Brazil.
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