1
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Aycan D, Gül İ, Yorulmaz V, Alemdar N. Gelatin microsphere-alginate hydrogel combined system for sustained and gastric targeted delivery of 5-fluorouracil. Int J Biol Macromol 2024; 255:128022. [PMID: 37972837 DOI: 10.1016/j.ijbiomac.2023.128022] [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: 08/27/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
In the current study, novel gelatin microspheres/methacrylated alginate hydrogel combined system (5-FU-GELms/Alg-MA) was developed for gastric targeted delivery of 5-fluorouracil as an anticancer agent. While water-in-oil emulsification method was used for the production of 5-FU-GELms, Alg-MA was synthesized through methacrylation reaction occurred by epoxide ring-opening mechanism. Then, 5-FU-GELms/Alg-MA hydrogel system was fabricated by the encapsulation of 5-FU-GELms into Alg-MA hydrogel network via UV-crosslinking. To evaluate applicability of fabricated 5-FU-GELms/Alg-MA as gastric targeted drug delivery vehicle, both swelling and in vitro drug release experiments were carried out at pH 1.2 medium resembling gastric fluid. Compared to drug release directly from 5-FU-GELms, 5-FU-GELms/Alg-MA hydrogel system showed more controlled and sustained drug release profile with lower amount of cumulative release starting from early stages, since hydrogel matrix created a barrier to the diffusion of 5-FU included in microspheres. Drug release kinetic results obtained by applying various kinetic models to release data showed that the mechanism of 5-FU release from 5-FU-GELms/Alg-MA hydrogel system is controlled by Fickian diffusion. All results revealed that 5-FU-GELms/Alg-MA hydrogel integrated system could be potentially utilized as gastric targeted drug carrier to enhance therapeutic efficacy and reduce systemic side effects in gastric cancer treatments for future studies.
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Affiliation(s)
- Didem Aycan
- Marmara University, Department of Chemical Engineering, Istanbul, Turkey
| | - İnanç Gül
- Marmara University, Department of Chemical Engineering, Istanbul, Turkey
| | - Valeria Yorulmaz
- Marmara University, Department of Chemical Engineering, Istanbul, Turkey
| | - Neslihan Alemdar
- Marmara University, Department of Chemical Engineering, Istanbul, Turkey.
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2
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Chick embryo chorioallantoic membrane: a biomaterial testing platform for tissue engineering applications. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Li L, Qi Z, Han S, Li X, Liu B, Liu Y. Advances and Applications of Metal-Organic Framework Nanomaterials as Oral Delivery Carriers: A Review. Mini Rev Med Chem 2022; 22:2564-2580. [PMID: 35362373 DOI: 10.2174/1389557522666220330152145] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/27/2022] [Accepted: 02/15/2022] [Indexed: 11/22/2022]
Abstract
Oral administration is a commonly used, safe, and patient-compliant method of drug delivery. However, due to the multiple absorption barriers in the gastrointestinal tract (GIT), the oral bioavailability of many drugs is low, resulting in a limited range of applications for oral drug delivery. Nanodrug delivery systems have unique advantages in overcoming the multiple barriers to oral absorption and improving the oral bioavailability of encapsulated drugs. Metal-organic frameworks (MOFs) are composed of metal ions and organic linkers assembled by coordination chemistry. Unlike other nanomaterials, nanoscale metal-organic frameworks (nano-MOFs, NMOFs) are increasingly popular for drug delivery systems (DDSs) due to their tunable pore size and easily modified surfaces. This paper summarizes the literature on MOFs in pharmaceutics included in SCI for the past ten years. Then, the GIT structure and oral drug delivery systems are reviewed, and the advantages, challenges, and solution strategies possessed by oral drug delivery systems are discussed. Importantly, two major classes of MOFs suitable for oral drug delivery systems are summarized, and various representative MOFs as oral drug carriers are evaluated in the context of oral drug delivery systems. Finally, the challenges faced by DDSs in the development of MOFs, such as biostability, biosafety, and toxicity, are examined.
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Affiliation(s)
- Li Li
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China;
- Institute of Forensic Expertise, Liaoning University, Shenyang, 110000, China
| | - Zhaorui Qi
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China
| | - Shasha Han
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China
| | - Xurui Li
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China
| | - Bingmi Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China;
- Institute of Forensic Expertise, Liaoning University, Shenyang, 110000, China
| | - Yu Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang, 110000, China;
- Institute of Forensic Expertise, Liaoning University, Shenyang, 110000, China
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4
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Jaberifard F, Arsalani N, Ghorbani M, Mostafavi H. Incorporating halloysite nanotube/carvedilol nanohybrids into gelatin microsphere as a novel oral pH-sensitive drug delivery system. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Kennedy DC, Coen B, Wheatley AM, McCullagh KJA. Microvascular Experimentation in the Chick Chorioallantoic Membrane as a Model for Screening Angiogenic Agents including from Gene-Modified Cells. Int J Mol Sci 2021; 23:452. [PMID: 35008876 PMCID: PMC8745510 DOI: 10.3390/ijms23010452] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 12/29/2021] [Accepted: 12/29/2021] [Indexed: 02/07/2023] Open
Abstract
The chick chorioallantoic membrane (CAM) assay model of angiogenesis has been highlighted as a relatively quick, low cost and effective model for the study of pro-angiogenic and anti-angiogenic factors. The chick CAM is a highly vascularised extraembryonic membrane which functions for gas exchange, nutrient exchange and waste removal for the growing chick embryo. It is beneficial as it can function as a treatment screening tool, which bridges the gap between cell based in vitro studies and in vivo animal experimentation. In this review, we explore the benefits and drawbacks of the CAM assay to study microcirculation, by the investigation of each distinct stage of the CAM assay procedure, including cultivation techniques, treatment applications and methods of determining an angiogenic response using this assay. We detail the angiogenic effect of treatments, including drugs, metabolites, genes and cells used in conjunction with the CAM assay, while also highlighting the testing of genetically modified cells. We also present a detailed exploration of the advantages and limitations of different CAM analysis techniques, including visual assessment, histological and molecular analysis along with vascular casting methods and live blood flow observations.
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Affiliation(s)
| | | | - Antony M. Wheatley
- Department of Physiology, School of Medicine, Human Biology Building, National University of Ireland, H91 W5P7 Galway, Ireland; (D.C.K.); (B.C.)
| | - Karl J. A. McCullagh
- Department of Physiology, School of Medicine, Human Biology Building, National University of Ireland, H91 W5P7 Galway, Ireland; (D.C.K.); (B.C.)
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6
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Moyano Rodríguez E, Gomez-Mendoza M, Pérez-Ruiz R, Peñín B, Sampedro D, Caamaño A, de la Peña O’Shea VA. Controlled Synthesis of Up-Conversion NaYF 4:Yb,Tm Nanoparticles for Drug Release under Near IR-Light Therapy. Biomedicines 2021; 9:1953. [PMID: 34944769 PMCID: PMC8699023 DOI: 10.3390/biomedicines9121953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022] Open
Abstract
Up-Conversion materials have received great attention in drug delivery applications in recent years. A specifically emerging field includes the development of strategies focusing on photon processes that promote the development of novel platforms for the efficient transport and the controlled release of drug molecules in the harsh microenvironment. Here, modified reaction time, thermal treatment, and pH conditions were controlled in the synthesis of NaYF4:Yb,Tm up-converted (UC) material to improve its photoluminescence properties. The best blue-emission performance was achieved for the UC3 sample prepared through 24 h-synthesis without thermal treatment at a pH of 5, which promotes the presence of the β-phase and smaller particle size. NaYF4:Yb,Tm has resulted in a highly efficient blue emitter material for light-driven drug release under near-IR wavelength. Thus, NaYF4:Yb,Tm up-converted material promotes the N-O bond cleavage of the oxime ester of Ciprofloxacin (prodrug) as a highly efficient photosensitized drug delivery process. HPLC chromatography and transient absorption spectroscopy measurements were performed to evaluate the drug release conversion rate. UC3 has resulted in a very stable and easily recovered material that can be used in several reaction cycles. This straightforward methodology can be extended to other drugs containing photoactive chromophores and is present as an alternative for drug release systems.
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Affiliation(s)
- Edelweiss Moyano Rodríguez
- Signal Theory and Communications and Telematic System and Computing, Rey Juan Carlos University, Cam/del Molino 5, 28942 Madrid, Spain;
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
| | - Miguel Gomez-Mendoza
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
| | - Raúl Pérez-Ruiz
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
- Departamento de Química, Universitat Politècnica de València, Camino de Vera S/N, 46022 Valencia, Spain
| | - Beatriz Peñín
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain; (B.P.); (D.S.)
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain; (B.P.); (D.S.)
| | - Antonio Caamaño
- Signal Theory and Communications and Telematic System and Computing, Rey Juan Carlos University, Cam/del Molino 5, 28942 Madrid, Spain;
| | - Víctor A. de la Peña O’Shea
- Photoactivated Processes Unit, IMDEA Energy Institute, C/Ramón de la Sagra, 3, 28935 Madrid, Spain; (M.G.-M.); (R.P.-R.)
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7
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3D printed multicompartmental capsules for a progressive drug release. ANNALS OF 3D PRINTED MEDICINE 2021. [DOI: 10.1016/j.stlm.2021.100026] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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8
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Development of nanostructured systems using natural polymers to optimize the treatment of inflammatory bowel diseases: A prospective study. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102590] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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9
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Jagdale P, Serino G, Oza G, Audenino AL, Bignardi C, Tagliaferro A, Alvarez-Gayosso C. Physical Characterization of Bismuth Oxide Nanoparticle Based Ceramic Composite for Future Biomedical Application. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1626. [PMID: 33810492 PMCID: PMC8036668 DOI: 10.3390/ma14071626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/17/2022]
Abstract
Employment and the effect of eco-friendly bismuth oxide nanoparticles (BiONPs) in bio-cement were studied. The standard method was adopted to prepare BiONPs-composite. Water was adopted for dispersing BiONPs in the composite. A representative batch (2 wt. % of BiONPs) was prepared without water to study the impact of water on composite properties. For each batch, 10 samples were prepared and tested. TGA (thermogravimetric analysis) performed on composite showed 0.8 wt. % losses in samples prepared without water whereas, maximum 2 wt. % weight losses observed in the water-based composite. Presence of BiONPs resulted in a decrease in depth of curing. Three-point bending flexural strength decreased for increasing BiONPs content. Comparative study between 2 wt. % samples with and without water showed 10.40 (±0.91) MPa and 28.45 (±2.50) MPa flexural strength values, respectively, indicating a significant (p < 0.05) increase of the mechanical properties at the macroscale. Nanoindentation revealed that 2 wt. % without water composites showed significant (p < 0.05) highest nanoindentation modulus 26.4 (±1.28) GPa and hardness 0.46 (±0.013) GPa. Usage of water as dispersion media was found to be deleterious for the overall characteristics of the composite but, at the same time, the BiONPs acted as a very promising filler that can be used in this class of composites.
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Affiliation(s)
- Pravin Jagdale
- Center for Sustainable Future Technologies—IIT@PoliTO Istituto Italiano di Tecnologia (IIT), Via Livorno 60, 10144 Turin, Italy;
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy;
| | - Gianpaolo Serino
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino, 10129 Turin, Italy; (A.L.A.); (C.B.)
- PolitoMed Lab, Politecnico di Torino, 10129 Turin, Italy
| | - Goldie Oza
- National Laboratory for Microfluidics and Nanofluidics (LABMyN), Centro de Investigación y Desarrollo Tecnológico en Electroquímica (CIDETEQ), 76703 Queretaro, Mexico;
| | - Alberto Luigi Audenino
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino, 10129 Turin, Italy; (A.L.A.); (C.B.)
- PolitoMed Lab, Politecnico di Torino, 10129 Turin, Italy
| | - Cristina Bignardi
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino, 10129 Turin, Italy; (A.L.A.); (C.B.)
- PolitoMed Lab, Politecnico di Torino, 10129 Turin, Italy
| | - Alberto Tagliaferro
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy;
| | - Carlos Alvarez-Gayosso
- Laboratorio de Investigacion de Materiles Dentales, Division de Estudios de Posgrado e Investigacion, Facultad de Odontologia, UNAM, Circuito de la Investigacion Cientifica, Alcaldia de Coyoacan, Ciudad Universitaria, 04510 Mexico, Mexico;
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10
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Tailorable hydrogel of gelatin with silk fibroin and its activation/crosslinking for enhanced proliferation of fibroblast cells. Int J Biol Macromol 2020; 164:4073-4083. [DOI: 10.1016/j.ijbiomac.2020.09.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 02/07/2023]
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11
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Cobb LH, McCabe EM, Priddy LB. Therapeutics and delivery vehicles for local treatment of osteomyelitis. J Orthop Res 2020; 38:2091-2103. [PMID: 32285973 PMCID: PMC8117475 DOI: 10.1002/jor.24689] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/07/2020] [Accepted: 04/11/2020] [Indexed: 02/04/2023]
Abstract
Osteomyelitis, or the infection of the bone, presents a major complication in orthopedics and may lead to prolonged hospital visits, implant failure, and in more extreme cases, amputation of affected limbs. Typical treatment for this disease involves surgical debridement followed by long-term, systemic antibiotic administration, which contributes to the development of antibiotic-resistant bacteria and has limited ability to eradicate challenging biofilm-forming pathogens including Staphylococcus aureus-the most common cause of osteomyelitis. Local delivery of high doses of antibiotics via traditional bone cement can reduce systemic side effects of an antibiotic. Nonetheless, growing concerns over burst release (then subtherapeutic dose) of antibiotics, along with microbial colonization of the nondegradable cement biomaterial, further exacerbate antibiotic resistance and highlight the need to engineer alternative antimicrobial therapeutics and local delivery vehicles with increased efficacy against, in particular, biofilm-forming, antibiotic-resistant bacteria. Furthermore, limited guidance exists regarding both standardized formulation protocols and validated assays to predict efficacy of a therapeutic against multiple strains of bacteria. Ideally, antimicrobial strategies would be highly specific while exhibiting a broad spectrum of bactericidal activity. With a focus on S. aureus infection, this review addresses the efficacy of novel therapeutics and local delivery vehicles, as alternatives to the traditional antibiotic regimens. The aim of this review is to discuss these components with regards to long bone osteomyelitis and to encourage positive directions for future research efforts.
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Affiliation(s)
- Leah H. Cobb
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA
| | - Emily M. McCabe
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA,Department of Mechanical Engineering, Mississippi State University, Mississippi State, MS, USA
| | - Lauren B. Priddy
- Department of Agricultural and Biological Engineering, Mississippi State University, Mississippi State, MS, USA,corresponding author: Contact: , (662) 325-5988, Department of Agricultural and Biological Engineering, Mississippi State University, 130 Creelman Street, Mississippi State, MS, USA 39762
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12
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Pinteala M, Abadie MJM, Rusu RD. Smart Supra- and Macro-Molecular Tools for Biomedical Applications. MATERIALS 2020; 13:ma13153343. [PMID: 32727155 PMCID: PMC7435709 DOI: 10.3390/ma13153343] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/28/2022]
Abstract
Stimuli-responsive, “smart” polymeric materials used in the biomedical field function in a bio-mimicking manner by providing a non-linear response to triggers coming from a physiological microenvironment or other external source. They are built based on various chemical, physical, and biological tools that enable pH and/or temperature-stimulated changes in structural or physicochemical attributes, like shape, volume, solubility, supramolecular arrangement, and others. This review touches on some particular developments on the topic of stimuli-sensitive molecular tools for biomedical applications. Design and mechanistic details are provided concerning the smart synthetic instruments that are employed to prepare supra- and macro-molecular architectures with specific responses to external stimuli. Five major themes are approached: (i) temperature- and pH-responsive systems for controlled drug delivery; (ii) glycodynameric hydrogels for drug delivery; (iii) polymeric non-viral vectors for gene delivery; (iv) metallic nanoconjugates for biomedical applications; and, (v) smart organic tools for biomedical imaging.
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Affiliation(s)
- Mariana Pinteala
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
| | - Marc J. M. Abadie
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
- Institute Charles Gerhardt Montpellier, Bat 15, CC 1052, University of Montpellier, 34095 Montpellier, France
| | - Radu D. Rusu
- “Petru Poni” Institute of Macromolecular Chemistry, Romanian Academy, Grigore Ghica Voda Alley, 41A, 700487 Iasi, Romania; (M.P.); (M.J.M.A.)
- Correspondence: ; Tel.: +40-232-217454
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13
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The use of the chick embryo CAM assay in the study of angiogenic activiy of biomaterials. Microvasc Res 2020; 131:104026. [PMID: 32505611 DOI: 10.1016/j.mvr.2020.104026] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/30/2020] [Accepted: 06/03/2020] [Indexed: 02/08/2023]
Abstract
The chick embryo chorioallantoic membrane (CAM) is a highly vascularized extraembryonic membrane, which carries out several functions during embryonic development, including exchange of respiratory gases, calcium transport from the eggshell, acid-base homeostasis in the embryo, and ion and water reabsorption from the allantoic fluid. Due to its easy accessibility, affordability and given that it constitutes an immunodeficient environment, CAM has been used as an experimental model for >50 years and in particular it has been broadly used to study angiogenesis and anti-angiogenesis. This review article describes the use of the CAM assay as a valuable assay to test angiogenic activity of biomaterials in vivo before they are further investigated in animal models. In this context, the use of CAM has become an integral part of the biocompatibility testing process for developing potential biomaterials.
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14
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Sharma N, Srivastava P, Sharma A, Nishad DK, Karwasra R, Khanna K, Kakkar D, Bhatnagar A. Potential applications of Abelmoschus moschatus polysaccharide as colon release tablets-Rheology and gamma scintigraphic study. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Constantin M, Bucatariu S, Ascenzi P, Butnaru M, Fundueanu G. Smart drug delivery system activated by specific biomolecules. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110466. [PMID: 31923948 DOI: 10.1016/j.msec.2019.110466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 09/30/2019] [Accepted: 11/17/2019] [Indexed: 10/25/2022]
Abstract
Essentially, the human body can release in different disease conditions specific biomolecules such as histamines when the body encounters a toxic substance, antibodies which are part of the body's natural immune response or nitric oxide as a cardiovascular signalling molecule. Design and development of "intelligent" delivery systems able to release the therapeutic agent only in the presence of bioactive compounds was presented here. Poly(N-isopropylacrylamide-co-N-(3-aminopropyl)methacrylamide)) (poly(NIPAAm-co-APM)) was synthesized as an exciting pH/temperature sensitive copolymer. Under physiological conditions (pH = 7.4), the APM in copolymer is in the ionized state (pKa = 8.7), highly hydrophilic and therefore the copolymer loses thermosensitive properties. Remarkably, after electrostatic interactions of APM with specific biomolecules, the copolymer restores the thermosensitive property. Thus, the microgels synthesized from this copolymer are in the "inactivated" state at normal physiological pH and temperature (pH = 7.4 and T = 36 °C). In the presence of specific biomolecules, microgels undergo "activation", shrink and expel mechanically a certain amount of drug. It must be mentioned that the pH-sensitive component plays the role of a biosensor, the biomolecule acts as a triggering agent, and the poly(NIPAAm) represents the delivery component (actuator). MTT tests showed that poly(NIPAAm-co-APM) microspheres are completely devoid of toxicity; moreover, the rabbit dermal fibroblasts vastly adhere to the surface of microspheres.
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Affiliation(s)
- Marieta Constantin
- Department of Natural Polymers, Bioactive and Biocompatible Materials, "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iassy, Romania
| | - Sanda Bucatariu
- Department of Natural Polymers, Bioactive and Biocompatible Materials, "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iassy, Romania
| | - Paolo Ascenzi
- Interdepartmental Laboratory for Electron Microscopy, University Roma Tre, I-00146 Roma, Italy
| | - Maria Butnaru
- Faculty of Medical Bioengineering, "Gr. T. Popa" University of Medicine and Pharmacy, 16 University Street, 700115 Iassy, Romania
| | - Gheorghe Fundueanu
- Department of Natural Polymers, Bioactive and Biocompatible Materials, "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iassy, Romania.
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16
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Javanbakht S, Nezhad-Mokhtari P, Shaabani A, Arsalani N, Ghorbani M. Incorporating Cu-based metal-organic framework/drug nanohybrids into gelatin microsphere for ibuprofen oral delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 96:302-309. [DOI: 10.1016/j.msec.2018.11.028] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/17/2018] [Accepted: 11/21/2018] [Indexed: 12/31/2022]
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17
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In vitro and in vivo evaluation of pirfenidone loaded acrylamide grafted pullulan-poly(vinyl alcohol) interpenetrating polymer networks. Carbohydr Polym 2018; 202:288-298. [DOI: 10.1016/j.carbpol.2018.08.135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/13/2018] [Accepted: 08/30/2018] [Indexed: 12/22/2022]
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18
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Nanaki S, Barmpalexis P, Iatrou A, Christodoulou E, Kostoglou M, Bikiaris DN. Risperidone Controlled Release Microspheres Based on Poly(Lactic Acid)-Poly(Propylene Adipate) Novel Polymer Blends Appropriate for Long Acting Injectable Formulations. Pharmaceutics 2018; 10:E130. [PMID: 30104505 PMCID: PMC6161267 DOI: 10.3390/pharmaceutics10030130] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/08/2018] [Accepted: 08/11/2018] [Indexed: 12/13/2022] Open
Abstract
The present study evaluates the preparation of risperidone controlled release microspheres as appropriate long-acting injectable formulations based on a series of novel biodegradable and biocompatible poly(lactic acid)⁻poly(propylene adipate) (PLA/PPAd) polymer blends. Initially, PPAd was synthesized using a two-stage melt polycondensation method (esterification and polycondensation) and characterized by 1H-NMR, differential scanning calorimetry (DSC), and powder X-ray diffraction (XRD) analyses. DSC and XRD results for PLA/PPAd blends (prepared by the solvent evaporation method) showed that these are immiscible, while enzymatic hydrolysis studies performed at 37 °C showed increased mass loss for PPAd compared to PLA. Risperidone-polyester microparticles prepared by the oil⁻water emulsification/solvent evaporation method showed smooth spherical surface with particle sizes from 1 to 15 μm. DSC, XRD, and Fourier-transformed infrared (FTIR) analyses showed that the active pharmaceutical ingredient (API) was dispersed in the amorphous phase within the polymer matrices, whereas in vitro drug release studies showed risperidone controlled release rates in all PLA/PPAd blend formulations. Finally, statistical moment analysis showed that polyester hydrolysis had a major impact on API release kinetics, while in PLA/PPAd blends with high PLA content, drug release was mainly controlled by diffusion.
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Affiliation(s)
- Stavroula Nanaki
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Panagiotis Barmpalexis
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Alexandros Iatrou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Evi Christodoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Margaritis Kostoglou
- Laboratory of General and Inorganic Chemical Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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