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Therapeutic Promises of Medicinal Plants in Bangladesh and Their Bioactive Compounds against Ulcers and Inflammatory Diseases. PLANTS 2021; 10:plants10071348. [PMID: 34371551 PMCID: PMC8309353 DOI: 10.3390/plants10071348] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/18/2021] [Accepted: 06/28/2021] [Indexed: 12/28/2022]
Abstract
When functioning properly, the stomach is the center of both physical and mental satisfaction. Gastrointestinal disorders, or malfunctioning of the stomach, due to infections caused by various biological entities and physiochemical abnormalities, are now widespread, with most of the diseases being inflammatory, which, depending on the position and degree of inflammation, have different names such as peptic or gastric ulcers, irritable bowel diseases, ulcerative colitis, and so on. While many synthetic drugs, such as non-steroidal anti-inflammatory drugs, are now extensively used to treat these diseases, their harmful and long-term side effects cannot be ignored. To treat these diseases safely and successfully, different potent medicinal plants and their active components are considered game-changers. In consideration of this, the present review aimed to reveal a general and comprehensive updated overview of the anti-ulcer and anti-inflammatory activities of medicinal plants. To emphasize the efficacy of the medicinal plants, various bioactive compounds from the plant extract, their experimental animal models, and clinical trials are depicted.
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Akalin GO, Oztuna Taner O, Taner T. The preparation, characterization and antibacterial properties of chitosan/pectin silver nanoparticle films. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03667-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Vaghela JJ, Barvaliya MJ, Parmar SJ, Tripathi CR. Evaluation of efficacy of Aloe vera (L.) Burm. f. gel solution in methylcellulose-induced ocular hypertension in New Zealand white rabbits. J Basic Clin Physiol Pharmacol 2020; 32:/j/jbcpp.ahead-of-print/jbcpp-2019-0158/jbcpp-2019-0158.xml. [PMID: 33170141 DOI: 10.1515/jbcpp-2019-0158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 04/09/2020] [Indexed: 02/04/2023]
Abstract
Objectives The present study aimed to evaluate the efficacy of Aloe vera in the methylcellulose-induced ocular hypertension model. Methods Fifty-six rabbits were randomly divided into seven groups. Intraocular pressure (IOP) was raised by anterior chamber injection of 2% methylcellulose in all the groups except the normal control group. Disease control animals were treated with sterile water and active control with topical 0.5% timolol 12 hourly; 6 and 12% A. vera gel topical solutions 8 hourly were given in group IV and V, respectively; 6 and 12% A. vera gel solutions along with timolol were given in group VI and VII animals, respectively. Mean IOP values and percentage of reduction in IOP were compared at 15 min, 30 min, 1 h, 2 h, 4 h, 8 h, 12 h, 24 h, 36 h, and 48 h. Results A. vera gel solutions (6 and 12%) showed a significant reduction in mean IOP from 4 to 2 h time points, respectively, whereas, A. vera gel solutions (6 and 12%) + timolol showed significant less mean IOP from a 30 min time point as compared with disease control. A. vera gel solutions (6 and 12%) showed 8.6 and 10.4% more reduction in IOP, respectively (66.8 ± 4.9% and 68.6 ± 5.4% vs. 58.2 ± 2.3%; p > 0.05), whereas 6 and 12% A. vera gel solutions along with timolol showed 14.5 and 16.2% more reduction in IOP, respectively (72.7 ± 4.7% and 74.4 ± 4.1% vs. 58.2 ± 2.3%; p < 0.05), than disease control group at 48 h. Conclusions Six and twelve percent A. vera gel solutions reduced the IOP effectively. Concurrent treatment with 12% A. vera gel and timolol produced the maximum reduction in IOP.
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Affiliation(s)
- Jhanvi J Vaghela
- Department of Pharmacology, Smt. B. K. Shah Medical Institute & Research Centre and Dhiraj Hospital, Sumandeep vidyapeeth, Vadodara, India
| | - Manish J Barvaliya
- Department of Pharmacology, Government Medical College and Sir Takhtsinhji General Hospital, Bhavnagar, India
| | | | - Chandrabhanu R Tripathi
- Department of Pharmacology, Government Medical College and Sir Takhtsinhji General Hospital, Bhavnagar, India
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Hissae Yassue-Cordeiro P, Zandonai CH, Pereira Genesi B, Santos Lopes P, Sanchez-Lopez E, Garcia ML, Camargo Fernandes-Machado NR, Severino P, B Souto E, Ferreira da Silva C. Development of Chitosan/Silver Sulfadiazine/Zeolite Composite Films for Wound Dressing. Pharmaceutics 2019; 11:pharmaceutics11100535. [PMID: 31615120 PMCID: PMC6835377 DOI: 10.3390/pharmaceutics11100535] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/05/2019] [Accepted: 10/07/2019] [Indexed: 01/05/2023] Open
Abstract
Biopolymeric films with silver sulfadiazine (AgSD) are proposed as an alternative to the occlusive AgSD-containing creams and gauzes, which are commonly used in the treatment of conventional burns. While the recognized cytotoxicity of AgSD has been reported to compromise its use as an antimicrobial drug in pharmaceuticals, this limitation can be overcome by developing sustained-release formulations. Microporous materials as zeolites can be used as drug delivery systems for sustained release of AgSD. The purpose of this work was the development and characterization of chitosan/zeolite composite films to be used as wound dressings. Zeolite was impregnated with AgSD before the production of the composite films. The physicochemical properties of zeolites and the films were evaluated, as well as the antimicrobial activity of the polymeric films and the cytotoxicity of the films in fibroblasts Balb 3T3/c. Impregnated zeolite exhibited changes in FTIR spectra and XRD diffraction patterns, in comparison to non-impregnated composites, which corroborate the results obtained with EDX-SEM. The pure chitosan film was compact and without noticeable defects and macropores, while the film with zeolite was opaquer, more rigid, and efficient against Candida albicans and some gram-negative bacteria. The safety evaluation showed that although the AgSD films present cytotoxicity, they could be used in a concentration-dependent fashion.
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Affiliation(s)
- Patricia Hissae Yassue-Cordeiro
- Department of Chemical Engineering, Universidade Tecnológica Federal do Paraná, Av. dos Pioneiros, 3131, Jardim Morumbi, Londrina-PR 86036-370, Brazil.
| | - Cássio Henrique Zandonai
- Department of Chemical Engineering, Universidade Estadual de Maringá, Av. Colombo 5790 Bloco D-90, Maringá 87020-900, Brazil.
| | - Bianca Pereira Genesi
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Rua São Nicolau 210, Diadema 09913-030, Brazil.
| | - Patrícia Santos Lopes
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Rua São Nicolau 210, Diadema 09913-030, Brazil.
| | - Elena Sanchez-Lopez
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Av. Joan XXIII 27-31, 08028 Barcelona, Spain.
- Institute of Nanoscience and nanotechnology (IN2UB). Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain.
- CIBERNED Centros de Biomedicina en Red de Enfermedades Neurodegenerativas, Facultat de Farmàcia, Universitat de Barcelona, 08028 Barcelona, Spain.
| | - Maria Luisa Garcia
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, Av. Joan XXIII 27-31, 08028 Barcelona, Spain.
- Institute of Nanoscience and nanotechnology (IN2UB). Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain.
- CIBERNED Centros de Biomedicina en Red de Enfermedades Neurodegenerativas, Facultat de Farmàcia, Universitat de Barcelona, 08028 Barcelona, Spain.
| | | | - Patrícia Severino
- Instituto de Tecnologia e Pesquisa, Universidade Tiradentes, Aracaju, Brazil.
- Tiradentes Institute, 150 Mt Vernon St, Dorchester, MA 02125, USA.
| | - Eliana B Souto
- Faculdade de Farmácia, Universidade de Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
- CEB-Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Classius Ferreira da Silva
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Rua São Nicolau 210, Diadema 09913-030, Brazil.
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Characterization of Aloe vera-banana starch composite films reinforced with curcumin-loaded starch nanoparticles. FOOD STRUCTURE-NETHERLANDS 2019. [DOI: 10.1016/j.foostr.2019.100131] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Kravanja G, Primožič M, Knez Ž, Leitgeb M. Chitosan-based (Nano)materials for Novel Biomedical Applications. Molecules 2019; 24:E1960. [PMID: 31117310 PMCID: PMC6572373 DOI: 10.3390/molecules24101960] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/15/2019] [Accepted: 05/18/2019] [Indexed: 02/03/2023] Open
Abstract
Chitosan-based nanomaterials have attracted significant attention in the biomedical field because of their unique biodegradable, biocompatible, non-toxic, and antimicrobial nature. Multiple perspectives of the proposed antibacterial effect and mode of action of chitosan-based nanomaterials are reviewed. Chitosan is presented as an ideal biomaterial for antimicrobial wound dressings that can either be fabricated alone in its native form or upgraded and incorporated with antibiotics, metallic antimicrobial particles, natural compounds and extracts in order to increase the antimicrobial effect. Since chitosan and its derivatives can enhance drug permeability across the blood-brain barrier, they can be also used as effective brain drug delivery carriers. Some of the recent chitosan formulations for brain uptake of various drugs are presented. The use of chitosan and its derivatives in other biomedical applications is also briefly discussed.
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Affiliation(s)
- Gregor Kravanja
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
| | - Mateja Primožič
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
| | - Željko Knez
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
- University of Maribor, Faculty of Medicine, Taborska ulica 8, 2000 Maribor, Slovenia.
| | - Maja Leitgeb
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
- University of Maribor, Faculty of Medicine, Taborska ulica 8, 2000 Maribor, Slovenia.
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Suarato G, Bertorelli R, Athanassiou A. Borrowing From Nature: Biopolymers and Biocomposites as Smart Wound Care Materials. Front Bioeng Biotechnol 2018; 6:137. [PMID: 30333972 PMCID: PMC6176001 DOI: 10.3389/fbioe.2018.00137] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/13/2018] [Indexed: 12/23/2022] Open
Abstract
Wound repair is a complex and tightly regulated physiological process, involving the activation of various cell types throughout each subsequent step (homeostasis, inflammation, proliferation, and tissue remodeling). Any impairment within the correct sequence of the healing events could lead to chronic wounds, with potential effects on the patience quality of life, and consequent fallouts on the wound care management. Nature itself can be of inspiration for the development of fully biodegradable materials, presenting enhanced bioactive potentialities, and sustainability. Naturally-derived biopolymers are nowadays considered smart materials. They provide a versatile and tunable platform to design the appropriate extracellular matrix able to support tissue regeneration, while contrasting the onset of adverse events. In the past decades, fabrication of bioactive materials based on natural polymers, either of protein derivation or polysaccharide-based, has been extensively exploited to tackle wound-healing related problematics. However, in today's World the exclusive use of such materials is becoming an urgent challenge, to meet the demand of environmentally sustainable technologies to support our future needs, including applications in the fields of healthcare and wound management. In the following, we will briefly introduce the main physico-chemical and biological properties of some protein-based biopolymers and some naturally-derived polysaccharides. Moreover, we will present some of the recent technological processing and green fabrication approaches of novel composite materials based on these biopolymers, with particular attention on their applications in the skin tissue repair field. Lastly, we will highlight promising future perspectives for the development of a new generation of environmentally-friendly, naturally-derived, smart wound dressings.
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Affiliation(s)
- Giulia Suarato
- Smart Materials, Istituto Italiano di Tecnologia, Genoa, Italy
- In vivo Pharmacology Facility, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Rosalia Bertorelli
- In vivo Pharmacology Facility, Istituto Italiano di Tecnologia, Genoa, Italy
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Figueroa-Pizano M, Vélaz I, Peñas F, Zavala-Rivera P, Rosas-Durazo A, Maldonado-Arce A, Martínez-Barbosa M. Effect of freeze-thawing conditions for preparation of chitosan-poly (vinyl alcohol) hydrogels and drug release studies. Carbohydr Polym 2018; 195:476-485. [DOI: 10.1016/j.carbpol.2018.05.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/09/2018] [Accepted: 05/01/2018] [Indexed: 01/22/2023]
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9
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Pinzon MI, Garcia OR, Villa CC. The influence of Aloe vera gel incorporation on the physicochemical and mechanical properties of banana starch-chitosan edible films. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:4042-4049. [PMID: 29377147 DOI: 10.1002/jsfa.8915] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 12/03/2017] [Accepted: 01/18/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Aloe vera (AV) gel is a promising material in food conservation, given its widely reported antimicrobial and antioxidant activity; however, its application in the formation of edible films and coatings has been small owing its low film-forming capability. The aim of this study was to investigate the physicochemical properties of film-forming solutions and films prepared using unripe banana starch-chitosan and AV gel at different AV gel concentrations. RESULTS Our results showed that AV gel considerably affected the rheological and optical properties of the edible coatings, mainly due to increased amounts of solids brought by the AV gel. Film-forming capacity and physicochemical properties were also studied; most of the film properties were affected by the inclusion of AV gel, with decreased water vapor permeability, tensile strength and elongation at break. Fourier transform infrared studies showed that the inclusion of AV gel disrupts the interaction between starch and chitosan molecules; however, further studies are needed to fully understand the specific interactions between the components of AV gel and both starch and chitosan molecules. CONCLUSION Our results suggest that the addition of AV gel creates a crosslinking effect between the phenolic compounds in AV gel and starch molecules, which disrupts the starch-chitosan interaction and greatly affects the properties of both the film-forming solution and edible films. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Magda I Pinzon
- Programa de Ingeniería de Alimentos, Facultad de Ciencias Agroindustriales, Universidad del Quindío, Armenia, Quindío, Colombia
| | - Omar R Garcia
- Programa de Ingeniería de Alimentos, Facultad de Ciencias Agroindustriales, Universidad del Quindío, Armenia, Quindío, Colombia
| | - Cristian C Villa
- Programa de Química, Facultad de Ciencias Básicas y Tecnologías, Universidad del Quindío, Armenia, Quindío, Colombia
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Muruganandam L, Saravana Kumar MP, Jena A, Gulla S, Godhwani B. Treatment of waste water by coagulation and flocculation using biomaterials. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1757-899x/263/3/032006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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New Biofunctional Loading of Natural Antimicrobial Agent in Biodegradable Polymeric Films for Biomedical Applications. Int J Biomater 2016; 2016:6964938. [PMID: 27965710 PMCID: PMC5124657 DOI: 10.1155/2016/6964938] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 09/05/2016] [Accepted: 10/09/2016] [Indexed: 01/25/2023] Open
Abstract
The study focuses on the development of novel Aloe vera based polymeric composite films and antimicrobial suture coatings. Polyvinyl alcohol (PVA), a synthetic biocompatible and biodegradable polymer, was combined with Aloe vera, a natural herb used for soothing burning effects and cosmetic purposes. The properties of these two materials were combined together to get additional benefits such as wound healing and prevention of surgical site infections. PVA and Aloe vera were mixed in a fixed quantity to produce polymer based films. The films were screened for antibacterial and antifungal activity against bacterial (E. coli, P. aeruginosa) and fungal strains (Aspergillus flavus and Aspergillus tubingensis) screened. Aloe vera based PVA films showed antimicrobial activity against all the strains; the lowest Aloe vera concentration (5%) showed the highest activity against all the strains. In vitro degradation and release profile of these films was also evaluated. The coating for sutures was prepared, in vitro antibacterial tests of these coated sutures were carried out, and later on in vivo studies of these coated sutures were also performed. The results showed that sutures coated with Aloe vera/PVA coating solution have antibacterial effects and thus have the potential to be used in the prevention of surgical site infections and Aloe vera/PVA based films have the potential to be used for wound healing purposes.
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Yassue-Cordeiro PH, Zandonai CH, Silva CFD, Fernandes-Machado NRC. Desenvolvimento e caracterização de filmes compósitos de quitosana e zeólitas com prata. POLIMEROS 2015. [DOI: 10.1590/0104-1428.2059] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo Zeólitas foram submetidas à troca iônica ou impregnação com prata e posteriormente adicionadas em filmes de quitosana para a confecção de curativos para queimaduras. As zeólitas foram avaliadas por Ressonância magnética nuclear (RMN), Fluorescência de raios X por reflexão total (TXRF), Microscopia eletrônica de varredura (MEV). Os filmes poliméricos foram analisados com relação às suas propriedades mecânicas, permeabilidade ao vapor d’água (PVA) e liberação de prata. Observou-se que o procedimento de troca iônica não alterou a morfologia das zeólitas de partida. Grumos de zeólita foram observados nas micrografias dos filmes e estes influenciaram nas propriedades mecânicas devido à desorganizaçao local no empacotamento das cadeiras poliméricas da quitosana. A metodologia de troca iônica ou impregnação influenciou diretamente na quantidade de prata presente superficialmente na zeólita e consequentemente alterou o perfil de liberação de prata em uma solução simulada de exudato de ferida. Os modelos cinéticos sugeriram que a liberação da prata não foi essencialmente regulada pela lei de difusão de Fick.
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Natural and synthetic polymers for wounds and burns dressing. Int J Pharm 2013; 463:127-36. [PMID: 24368109 DOI: 10.1016/j.ijpharm.2013.12.015] [Citation(s) in RCA: 590] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/10/2013] [Accepted: 12/14/2013] [Indexed: 12/15/2022]
Abstract
In the last years, health care professionals faced with an increasing number of patients suffering from wounds and burns difficult to treat and heal. During the wound healing process, the dressing protects the injury and contributes to the recovery of dermal and epidermal tissues. Because their biocompatibility, biodegradability and similarity to macromolecules recognized by the human body, some natural polymers such as polysaccharides (alginates, chitin, chitosan, heparin, chondroitin), proteoglycans and proteins (collagen, gelatin, fibrin, keratin, silk fibroin, eggshell membrane) are extensively used in wounds and burns management. Obtained by electrospinning technique, some synthetic polymers like biomimetic extracellular matrix micro/nanoscale fibers based on polyglycolic acid, polylactic acid, polyacrylic acid, poly-ɛ-caprolactone, polyvinylpyrrolidone, polyvinyl alcohol, polyethylene glycol, exhibit in vivo and in vitro wound healing properties and enhance re-epithelialization. They provide an optimal microenvironment for cell proliferation, migration and differentiation, due to their biocompatibility, biodegradability, peculiar structure and good mechanical properties. Thus, synthetic polymers are used also in regenerative medicine for cartilage, bone, vascular, nerve and ligament repair and restoration. Biocompatible with fibroblasts and keratinocytes, tissue engineered skin is indicated for regeneration and remodeling of human epidermis and wound healing improving the treatment of severe skin defects or partial-thickness burn injuries.
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López A, de Tangil MS, Vega-Orellana O, Ramírez AS, Rico M. Phenolic constituents, antioxidant and preliminary antimycoplasmic activities of leaf skin and flowers of Aloe vera (L.) Burm. f. (syn. A. barbadensis Mill.) from the Canary Islands (Spain). Molecules 2013; 18:4942-54. [PMID: 23624648 PMCID: PMC6270129 DOI: 10.3390/molecules18054942] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/19/2013] [Accepted: 04/23/2013] [Indexed: 02/07/2023] Open
Abstract
The methanol extracts of leaf skins and flowers of Aloe vera from the Canary Islands were analyzed for their phenolic profiles and screened for their antioxidant and antimycoplasmic activities. The use of reversed phase high performance liquid chromatography (RP-HPLC) allowed the identification of 18 phenolic constituents. Leaf skin extracts were characterized by the abundance of catechin, sinapic acid and quercitrin. Gentisic acid, epicatechin and quercitrin were the most prominent phenolic compounds of the flowers. The in vitro antioxidant activities determined by using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric antioxidant reducing power (FRAP) assays revealed that both extracts exhibited antioxidant activity, being the leaf skin extract the most active fraction. The leaf skin extract was also found to be active against the microbial strains tested. Therefore, A. vera extracts from leaf skin and flowers can be considered as good natural antioxidant sources.
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Affiliation(s)
- Aroa López
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Miguel Suárez de Tangil
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Orestes Vega-Orellana
- Unidad de Epidemiología y Medicina Preventiva, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, C/Trasmontaña s/n, Arucas, 35413, Islas Canarias, Spain
| | - Ana S. Ramírez
- Unidad de Epidemiología y Medicina Preventiva, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, C/Trasmontaña s/n, Arucas, 35413, Islas Canarias, Spain
| | - Milagros Rico
- Departamento de Química, Universidad de Las Palmas de Gran Canaria, Unidad Asociada al CSIC, Campus de Tafira, 35017 Las Palmas de Gran Canaria, Canary Islands, Spain
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +34-928-454-418; Fax: +34-928-452-922
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SHIEKH RA, MALIK MA, AL-THABAITI SA, SHIEKH MA. Chitosan as a Novel Edible Coating for Fresh Fruits. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2013. [DOI: 10.3136/fstr.19.139] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Estevam L, Debone H, Yoshida C, da Silva C. Adsorption of Bovine Serum and Bovine Haemoglobin onto Chitosan Film. ADSORPT SCI TECHNOL 2012. [DOI: 10.1260/0263-6174.30.8-9.785] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- L.S. Estevam
- Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, CEP 09972-270, Diadema SP, Brasil
| | - H.S. Debone
- Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, CEP 09972-270, Diadema SP, Brasil
| | - C.M.P. Yoshida
- Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, CEP 09972-270, Diadema SP, Brasil
| | - C.F. da Silva
- Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, CEP 09972-270, Diadema SP, Brasil
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Mechanical, physicochemical and color properties of chitosan based-films as a function of Aloe vera gel incorporation. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.10.020] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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