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Barros AB, Teles FB, Araújo DD, Da Silva DA, Santos LBPD, Aldeman NLS, Cajado AG, Assef ANB, Wilke DV, Lima-Junior RCP, Araújo AJ, Marinho-Filho JDB. Combining cashew gum with cyclophosphamide in murine melanoma model: A strategy for the reduction of side effects. Int J Biol Macromol 2024; 275:133588. [PMID: 38960246 DOI: 10.1016/j.ijbiomac.2024.133588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 06/28/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
The understanding of cancer immunity and antitumor factors generated by natural polysaccharides is not yet fully comprehended. Polysaccharides, like cashew gum (CG), can exhibit immunomodulatory action and may assist in the antitumor process and side effects relieve. This study aimed to determine the antitumor effect of CG alone or in combination with cyclophosphamide (CTX), and its interactions with immune cells, in a murine melanoma model, using the B16-F10 cell line. Tumor growth inhibition, hematological, histopathological, ELISA, flow cytometry, immunofluorescence, and qRT-PCR analyses were performed to elucidate the antitumor potential, involvement of immune cells, and potential toxic effects. CG showed significant tumor growth inhibition, reaching up to 42.9 % alone and 51.4 % in combination with CTX, with mild toxicity to organs. CG enhanced leukocyte count, even in the presence of CTX. Furthermore, CG influenced the activation of tumor-associated macrophages (TAM), characterized by an increase in Il4, as well as a reduction in Ifng, Il1b, Tgfb, and Il6 gene expression. Nevertheless, these effects did not compromise the antitumor activity of CG. In summary, the combination of CG with CTX is a promising approach for leukopenia, one of the most important side effects of cancer treatment and deserves further investigation.
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Affiliation(s)
- Ayslan Batista Barros
- Universidade Federal do Delta do Parnaíba, Núcleo de Pesquisa e Pós-graduação, 64.202-020 Parnaíba, PI, Brazil
| | - Felipe Barros Teles
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos, Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, 60430-160 Fortaleza, Ceará, Brazil
| | - Dakson Douglas Araújo
- Universidade Federal do Delta do Parnaíba, Núcleo de Pesquisa e Pós-graduação, 64.202-020 Parnaíba, PI, Brazil
| | - Durcilene Alves Da Silva
- Universidade Federal do Delta do Parnaíba, Núcleo de Pesquisa e Pós-graduação, 64.202-020 Parnaíba, PI, Brazil
| | | | - Nayze Lucena Sangreman Aldeman
- Universidade Federal do Delta do Parnaíba, Núcleo de Pesquisa e Pós-graduação, 64.202-020 Parnaíba, PI, Brazil; Faculdade de Ciências Humanas, Exatas e da Saúde do Piauí, Instituto de Educação Superior do Vale do Parnaíba, 64212-790 Parnaíba, Brazil
| | - Aurilene Gomes Cajado
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos, Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, 60430-160 Fortaleza, Ceará, Brazil
| | - Alexia Nathália Brígido Assef
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos, Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, 60430-160 Fortaleza, Ceará, Brazil
| | - Diego Veras Wilke
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos, Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, 60430-160 Fortaleza, Ceará, Brazil
| | - Roberto Cesar Pereira Lima-Junior
- Núcleo de Pesquisa e Desenvolvimento de Medicamentos, Departamento de Fisiologia e Farmacologia, Universidade Federal do Ceará, 60430-160 Fortaleza, Ceará, Brazil
| | - Ana Jérsia Araújo
- Universidade Federal do Delta do Parnaíba, Núcleo de Pesquisa e Pós-graduação, 64.202-020 Parnaíba, PI, Brazil
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Tanwar M, Gupta RK, Rani A. Natural gums and their derivatives based hydrogels: in biomedical, environment, agriculture, and food industry. Crit Rev Biotechnol 2024; 44:275-301. [PMID: 36683015 DOI: 10.1080/07388551.2022.2157702] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 11/04/2022] [Accepted: 11/14/2022] [Indexed: 01/24/2023]
Abstract
The hydrogels based on natural gums and chemically derivatized natural gums have great interest in pharmaceutical, food, cosmetics, and environmental remediation, due to their: economic viability, sustainability, nontoxicity, biodegradability, and biocompatibility. Since these natural gems are from plants, microorganisms, and seaweeds, they offer a great opportunity to chemically derivatize and modify into novel, innovative biomaterials as scaffolds for tissue engineering and drug delivery. Derivatization improves swelling properties, thereby developing interest in agriculture and separating technologies. This review highlights the work done over the past three and a half decades and the possibility of developing novel materials and technologies in a cost-effective and sustainable manner. This review has compiled various natural gums, their source, chemical composition, and chemically derivatized gums, various methods to synthesize hydrogel, and their applications in biomedical, food and agriculture, textile, cosmetics, water purification, remediation, and separation fields.
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Affiliation(s)
- Meenakshi Tanwar
- Department of Applied Chemistry, Delhi Technological University, Delhi, India
| | - Rajinder K Gupta
- Department of Applied Chemistry, Delhi Technological University, Delhi, India
| | - Archna Rani
- Department of Applied Chemistry, Delhi Technological University, Delhi, India
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3
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Silva FCO, Malaisamy A, Cahú TB, de Araújo MIF, Soares PAG, Vieira AT, Dos Santos Correia MT. Polysaccharides from exudate gums of plants and interactions with the intestinal microbiota: A review of vegetal biopolymers and prediction of their prebiotic potential. Int J Biol Macromol 2024; 254:127715. [PMID: 37918599 DOI: 10.1016/j.ijbiomac.2023.127715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/25/2023] [Accepted: 10/25/2023] [Indexed: 11/04/2023]
Abstract
Polysaccharides in plant-exuded gums are complex biopolymers consisting of a wide range of structural variability (linkages, monosaccharide composition, substituents, conformation, chain length and branching). The structural features of polysaccharides confer the ability to be exploited in different industrial sectors and applications involving biological systems. Moreover, these characteristics are attributed to a direct relationship in the process of polysaccharide enzymatic degradation by the fermentative action in the gut microbiota, through intrinsic interactions connecting bacterial metabolism and the production of various metabolites that are associated with regulatory effects on the host homeostasis system. Molecular docking analysis between bacterial target proteins and arabinogalactan-type polysaccharide obtained from gum arabic allowed the identification of intermolecular interactions provided bacterial enzymatic mechanism for the degradation of several arabinogalactan monosaccharide chains, as a model for the study and prediction of potential fermentable polysaccharide. This review discusses the main structural characteristics of polysaccharides from exudate gums of plants and their interactions with the intestinal microbiota.
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Affiliation(s)
- Francisca Crislândia Oliveira Silva
- Department of Biochemistry, Biotechnology Laboratory (LaBioTec), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - University City, CEP 50.670-901 Recife, PE, Brazil
| | - Arunkumar Malaisamy
- Transcription Regulation Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India
| | - Thiago Barbosa Cahú
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro (UFRJ), University City, CEP 21941-913 Rio de Janeiro, RJ, Brazil
| | - Maria Isabela Ferreira de Araújo
- Department of Biochemistry, Biotechnology Laboratory (LaBioTec), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - University City, CEP 50.670-901 Recife, PE, Brazil
| | - Paulo Antônio Galindo Soares
- Department of Biochemistry, Biotechnology Laboratory (LaBioTec), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - University City, CEP 50.670-901 Recife, PE, Brazil
| | - Angélica Thomaz Vieira
- Department of Biochemistry and Immunology, Laboratory of Microbiota and Immunomodulation (LMI), Federal University of Minas Gerais (UFMG), Antonio Carlos, 6627 - Pampulha, CEP 30.161-970 Belo Horizonte, MG, Brazil
| | - Maria Tereza Dos Santos Correia
- Department of Biochemistry, Glycoprotein Laboratory (BIOPROT), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - University City, CEP 50.670-901 Recife, PE, Brazil.
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Brito FDCM, Lopes WC, Ribeiro FOS, Rodrigues RRL, França Rodrigues KAD, Santos Machado FD, Araújo AJ, Marinho Filho JDB, Oliveira ACJ, Filho ECS, Ribeiro IS, Paula RCMD, Hallwass F, Viana VGF, Silva DA. Influence of Reduction with NaBH 4 and HCl in Obtaining Amino Derivatives of Cashew Gum and Cytotoxic Profile. Polymers (Basel) 2023; 15:2856. [PMID: 37447501 DOI: 10.3390/polym15132856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/17/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
Tree-exuded gums are natural polymers that represent an abundant raw material in the food and pharmaceutical industries. The cashew gum can be obtained by exudation of trees of the genus Anacardium, a native species of the Brazilian northeast; its polymer consists of monosaccharide units propitious to the action of chemical reactions that tend to improve their intrinsic characteristics among them, as the degree of hydro-solubility. The objective of this work was to modify the exudate gum of Anacardium occidentale (cashew gum (CG)) through an amine reaction. The modification was confirmed by Nuclear Magnetic Resonance (1H NMR), infrared spectroscopy (FTIR), gel permeation chromatography (GPC), zeta potential, and thermogravimetric analysis (TG). In addition, the chemical modification altered the molar mass and surface charge of the CG, and the amino group binding to the CG polymers was confirmed by FTIR spectra. In addition, cytotoxicity tests were performed where cell viability was estimated by an MTT assay on RAW 264.7 macrophages. Through these tests, it was found that the amine caused an increase in the thermal stability of the amino compounds and did not present cytotoxic potential at concentrations below 50.0 mg/L.
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Affiliation(s)
- Francisco das C M Brito
- Federal Institute of Piauí, Campus, Piripiri 64260-000, PI, Brazil
- Biodiversity and Biotechnology Research Center, Biotec, Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
- Postgraduate Program in Materials Engineering PPGEM, Federal Institute of Piauí, Campus, Teresina 64000-040, PI, Brazil
| | - Wilton C Lopes
- Biodiversity and Biotechnology Research Center, Biotec, Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
- Federal Institute of Piauí, Campus, Pedro II 64255-000, PI, Brazil
| | - Fábio O S Ribeiro
- Biodiversity and Biotechnology Research Center, Biotec, Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
| | - Raiza Raianne Luz Rodrigues
- Infectious Disease Laboratory, Ladic, Parnaíba, Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
| | | | - Fabrício Dos Santos Machado
- Laboratório de Cultura de Células do Delta (LCCDelta), Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
| | - Ana Jérsia Araújo
- Laboratório de Cultura de Células do Delta (LCCDelta), Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
| | | | | | - Edson C S Filho
- Interdisciplinary Laboratory for Advanced Materials, Teresina 64049-550, PI, Brazil
| | - Irisvan S Ribeiro
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza 60440-900, CE, Brazil
| | - Regina C M de Paula
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza 60440-900, CE, Brazil
| | - Fernando Hallwass
- Department of Fundamental Chemistry, Federal University of Pernambuco, Recife 50670-901, PE, Brazil
| | - Vicente Gálber F Viana
- Postgraduate Program in Materials Engineering PPGEM, Federal Institute of Piauí, Campus, Teresina 64000-040, PI, Brazil
| | - Durcilene A Silva
- Biodiversity and Biotechnology Research Center, Biotec, Parnaíba Delta Federal University, UFDPar, Parnaíba 64202-020, PI, Brazil
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Wang J, Pu J, Zhang Z, Feng Z, Han J, Su X, Shi L. Triterpenoids of Ganoderma lucidum inhibited S180 sarcoma and H22 hepatoma in mice by regulating gut microbiota. Heliyon 2023; 9:e16682. [PMID: 37484292 PMCID: PMC10360580 DOI: 10.1016/j.heliyon.2023.e16682] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 05/20/2023] [Accepted: 05/24/2023] [Indexed: 07/25/2023] Open
Abstract
In order to explore effect of natural plant extracts on anti-tumor and prevent tumor development. The study assessed the antitumor effect of triterpenoids of Ganoderma lucidum (TGL) on S180 and H22 tumor bearing mice. A triterpene compound, 2α, 3α, 23-trihydroxy-urs-12-en-28-oic acid, was successfully isolated and purified from G. lucidum. S180 and H22 cells were subcutaneously inoculated in the left axilla of mice to establish a transplantable tumor model. After, the mice were orally treated with TGL and evaluated by tumor inhibition rate, organ index, and the serum index. The Bax and Bcl-2 proteins and gut microbiota was analyzed using western blot and 16S rDNA sequencing respectively. The results showed the tumor inhibition rates of TGL were higher than 40% in H22 and S180 tumor bearing mice. TGL had a protective effect on the spleen and thymus, and improved lipid peroxidation caused by the increased free radicals. TGL downregulated Bcl-2 and upregulated Bax. In particular, TGL treatment improved the reduction of gut microbiota richness and structure.
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Affiliation(s)
| | | | | | | | | | | | - Lei Shi
- Corresponding author. Department of Pharmacy, Gansu Provincial Hospital, Donggang West Road No. 204, Lanzhou, Gansu 730000, China.
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Azevedo GA, Heinrichs MC, Moraes ÂM. Cashew tree gum for biomaterials engineering: A versatile raw material in consolidation. J Appl Polym Sci 2022. [DOI: 10.1002/app.52484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gabriel Assis Azevedo
- Department of Engineering of Materials and of Bioprocesses, School of Chemical Engineering University of Campinas Campinas São Paulo Brazil
| | - Maria Carolina Heinrichs
- Department of Engineering of Materials and of Bioprocesses, School of Chemical Engineering University of Campinas Campinas São Paulo Brazil
| | - Ângela Maria Moraes
- Department of Engineering of Materials and of Bioprocesses, School of Chemical Engineering University of Campinas Campinas São Paulo Brazil
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First report of triterpenes pathway in Calotropis prtocera revealed to accumulate beta-amyrin. Saudi J Biol Sci 2022; 29:3647-3653. [PMID: 35844368 PMCID: PMC9280243 DOI: 10.1016/j.sjbs.2022.02.055] [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: 12/03/2021] [Revised: 02/25/2022] [Accepted: 02/28/2022] [Indexed: 11/27/2022] Open
Abstract
The major reports on Calotropis procera (C. procera) indicated the importance of this plant as a resource of pharmaceutically active ingredients as well as its medical advantages. β-amyrin (BA) is a significant substance in this plant and has a pharmacological effects in some frameworks, like focal and fringe sensory system, digestive and immune systems. In this study, the impact of sunlight before and after irrigation on the BA production in C. procera is studied its pathway with involved eight key enzymes. The eight enzymes' genes were characterized and successfully submitted to NCBI; AAS (acc.no. KU997645) for α-amyrin synthase, BAS (acc.no. MW976955) for β-amyrin synthase, SE (acc.no. MW976956) for squalene epoxidase, SS (acc.no. MW976957) for squalene synthase, GPPS, (acc.no. MW976958) for geranyl pyrophosphate synthase, FPPS (acc.no. MW976959) for farnasyl pyrophosphate synthase, CAS1, (acc.no. MZ00598) for cycloartenol synthase1 and LS (acc.no. MZ005982) for lupeol synthase. qRT-PCR analysis revealed high expression levels of GPPS, FPPS, SS, SE, and BAS genes at all times specially midday. Otherwise, CAS1, LS and BAS expression levels were very low at all daylight periods. The UPLC β-amyrin data are in accordance with qRT-PCR results. This indicates that triterpenes biosynthetic pathway in C. procera is going to β-amyrin accumulation with the highest level at midday.
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Uchoa AFJ, do Valle CP, Moreira DR, Bañobre-López M, Gallo J, Dias FS, Anderson MW, Ricardo NMPS. Synthesis of a KIT-6 mesoporous sulfonic acid catalyst to produce biodiesel from cashew nut oil. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1007/s43153-021-00216-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Santana Andrade JK, Chagas Barros RG, Gualberto NC, Santos de Oliveira C, Shanmugam S, Narain N. Influence of in vitro gastrointestinal digestion and probiotic fermentation on the bioaccessibility of gallic acid and on the antioxidant potential of Brazilian fruit residues. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Assef ANB, da Costa BB, Moreira TA, do Carmo LD, de Souza TDFG, Alencar NMN, Alves APNN, Cinelli LP, Wilke DV. Antitumor and immunostimulating sulfated polysaccharides from brown algae Dictyota caribaea. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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de Almeida WS, da Silva DA. Does polysaccharide quaternization improve biological activity? Int J Biol Macromol 2021; 182:1419-1436. [PMID: 33965482 DOI: 10.1016/j.ijbiomac.2021.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/26/2021] [Accepted: 05/02/2021] [Indexed: 12/19/2022]
Abstract
The natural polysaccharides, due to their structural diversity, commonly present very distinct solubility and physical chemical properties and additionally have intrinsic biological activities that, gene-rally, reveal themselves in a light way. The chemical modification of the molecular structure can improve these parameters. In this review, original articles that approached the quaternization of polysaccharides for purposes of biological application were selected, without limitation of year of publication, in the databases Scopus, Web of Science and PubMed. The results obtained from the bibliographic survey indicate that the increase in positive charges caused by quaternization improves the interaction between modified polysaccharides and structures that have negative charges on their surface, such as the cell wall of microorganisms and some cells in the human body, such as the DNA. This greater interaction is reflected as an increase in the biological activity of all polysaccharides broached in this study. Another important data obtained was the fact that the chemical changes did not affect or irrelevantly affect the toxicity of almost all of the polysaccharides that were quaternized. Therefore, polysaccharide quaternization is a safe and effective way to obtain improvements in the biological behavior of these macromolecules.
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Affiliation(s)
- Wanessa Sales de Almeida
- Programa de Pós-graduação em Ciência e Engenharia de Materiais, Universidade Federal do Piauí, Campus Ministro Petrônio Portela, 64049-550 Teresina, PI, Brazil.
| | - Durcilene Alves da Silva
- Programa de Pós-graduação em Ciência e Engenharia de Materiais, Universidade Federal do Piauí, Campus Ministro Petrônio Portela, 64049-550 Teresina, PI, Brazil; Núcleo de Pesquisa em Biotecnologia e Biodiversidade, Universidade Federal do Delta do Parnaíba, Brazil.
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12
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Stimuli-responsive natural gums-based drug delivery systems for cancer treatment. Carbohydr Polym 2021; 254:117422. [PMID: 33357903 DOI: 10.1016/j.carbpol.2020.117422] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 12/23/2022]
Abstract
Chemotherapy as the main cancer treatment method has non-specific effects and various side-effects. Accordingly, significant attempts have been conducted to enhance its efficacy through design and development of "smart" drug delivery systems (DDSs). In this context, natural gums, as a nice gift by the nature, can be exploited as stimuli-responsive DDSs for cancer treatment in part due to their renewability, availability, low cost, bioactivity, biocompatibility, low immunogenicity, biodegradability, and acceptable stability in both in vitro and in vivo conditions. However, some shortcomings (e.g., poor mechanical properties and high hydration rate) restrict their biomedical application ranges that can be circumvented through modification process (e.g., grafting of stimuli-responsive polymers or small molecules) to obtain tailored biomaterials. This review article aimed to compile the stimuli-responsive DDSs based on natural gums. In addition, different types of stimuli, the fundamental features of natural gums, as well as their chemical modification approaches are also shortly highlighted.
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do N Ferreira CR, de L Ramos EL, Araujo LFS, da S Sousa LM, Feitosa JPA, Cunha AF, Oliveira MB, Mano JF, da S Maciel J. Synthesis and characterization of scaffolds produced under mild conditions based on oxidized cashew gums and carboxyethyl chitosan. Int J Biol Macromol 2021; 176:26-36. [PMID: 33529634 DOI: 10.1016/j.ijbiomac.2021.01.178] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/01/2020] [Accepted: 01/27/2021] [Indexed: 12/22/2022]
Abstract
This study describes the development of scaffolds based on carboxyethyl chitosan (CEC) and different oxidized cashew gums (CGOx) for tissue engineering (TE) applications. After the physico-chemical characterizations of CEC and CGOx (oxidation degree of 20, 35 and 50%), these macromolecules were used for producing the CGOx-CEC hydrogels through a Schiff base reaction, in the absence of any crosslinking agent. The CGOx-CEC scaffolds obtained after a freeze-drying process were characterized for their morphology, mechanical properties, swelling ability, degradation, and porosity. Those revealed to be highly porous (25-65%), and showed a stable swelling behavior, as well as degradation properties in the absence of enzymes. The use of the cashew gum with higher degree of oxidation led to scaffolds with higher crosslinking densities and increased compressive modulus. None of the hydrogels show cytotoxicity during the 14 days of incubation. Considering all the properties mentioned, these scaffolds are excellent candidates for soft tissue regeneration, owing to the use of eco-friendly starting materials and the easy tuning of their properties.
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Affiliation(s)
- Carlos Rhamon do N Ferreira
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil
| | - Everton Lucas de L Ramos
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil
| | - Luis Felipe S Araujo
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil
| | - Leonira Morais da S Sousa
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil
| | - Judith Pessoa A Feitosa
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil
| | - Ana Filipa Cunha
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mariana B Oliveira
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - João F Mano
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Jeanny da S Maciel
- Department of Organic and Inorganic Chemistry, Polymer Laboratory, Federal University of Ceará, 60440-900 Fortaleza, Brazil.
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Vieira DFF, Junior ALG, Machado KDC, Maia WMN, Nascimento TLD, Rios MADS, Lopes LDS. Evaluation of the anticonvulsant and antioxidant activity of alkylated cardanol in rodents. Nat Prod Res 2020; 35:6168-6174. [PMID: 33143464 DOI: 10.1080/14786419.2020.1831496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The present study aims to evaluate the anticonvulsant and antioxidant activity of the alkylated cardanol in mice, as well as the possible mechanisms involved. Albino mice were used. The pentylenetetrazol, picrotoxin, and pilocarpine were used to induce seizures clonic. The effect of selective receptor antagonist GABAA on anticonvulsant activity was investigated with flumazenil. The antioxidant activity was evaluated by the formation of lipid peroxides, nitrite content, and concentration of reduced glutathione. The largest dose of alkylated cardanol increased the latency of the first seizure induced by pentylenetetrazol acting on the GABAergic receptors. The treatment did not alter body weight and did not cause death in animals. It was observed a reduction in locomotor activity and motor coordination. Treatment reduced the level of lipid peroxidation and contents of nitrite and increased levels of GSH in the hippocampus and frontal cortex. Alkylated cardanol showed a protective effect against convulsions induced in mice.
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Affiliation(s)
- Danielle Fernanda Fernandes Vieira
- Postgraduate Programs in Pharmaceutical Sciences and Laboratory of Research in Experimental Neurochemistry (LAPNEX), Federal University of Piauí, Teresina, Brazil
| | - Antonio Luiz Gomes Junior
- Postgraduate Programs in Pharmaceutical Sciences and Biotechnology, Federal University of Piauí, Teresina, Brazil
| | - Keylla da Conceição Machado
- Postgraduate Programs in Pharmaceutical Sciences and Laboratory of Research in Experimental Neurochemistry (LAPNEX), Federal University of Piauí, Teresina, Brazil
| | - Wcleubianne Matias Nascimento Maia
- Postgraduate Programs in Pharmaceutical Sciences and Laboratory of Research in Experimental Neurochemistry (LAPNEX), Federal University of Piauí, Teresina, Brazil
| | - Tassio Lessa do Nascimento
- Instituto Federal de Educação Ciência e Tecnologia, Campus Tabuleiro do Norte, Sítio Taperinha, Tabuleiro do Norte, CE, Brazil
| | - Maria Alexsandra de Sousa Rios
- Departamento de Engenharia Mecânica Grupo de Inovações Tecnológicas e Especialidades Químicas Campus do Pici, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - Luciano da Silva Lopes
- Department of Biophysics and Physiology, Programs in Pharmaceutical Sciences, Laboratory of Research in Experimental Neurochemistry [LAPNEX], Federal University of Piauí, Teresina, Brazil
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