1
|
Emam HE, Shaheen TI. Design of a dual pH and temperature responsive hydrogel based on esterified cellulose nanocrystals for potential drug release. Carbohydr Polym 2022; 278:118925. [PMID: 34973743 DOI: 10.1016/j.carbpol.2021.118925] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 12/19/2022]
Abstract
In this study, new stimuli - responsive hybrid hydrogels were achieved via succinylated cellulose nanocrystals (Su-CNC). The innovation was concerned with the inclusion of Su-CNC, at different degree of substitution (DS), into hydrogel network to render it pH and thermo-responsive characters through free radical polymerization reaction with poly(N-isopropylacrylamide) (PNIPAm). The prepared hydrogel was also examined for the in vitro release of Famotidine at different pH values. As clearly evident from the results, all the hydrogels prepared with different DS of Su-CNC, which were nominated as Su-CNC / PNIPAm (1-3), showed a high response to temperature change since their swelling behavior and hydrophilicity were decreased at 35 °C and upwards. This led to the more hydrophobicity character and thus the hydrogel shrinkage occurred. On the other hand, at pH 6, the hydrogels exhibited a significant Equilibrium Swelling Ratio (ESR) attaining 18.1, 17.3 and 16.8 (g/g) for Su-CNC / PNIPAm (1-3), respectively. However, Su-CNC / PNIPAm 2 hydrogel showed a significant response to the pH change from 8 to 2 which was advised to be selected as a potential pH responsive hydrogel for the in vitro Famotidine release.
Collapse
Affiliation(s)
- Hossam E Emam
- Department of Pretreatment and Finishing of Cellulosic based Textiles, Institute of Textile Research and Technology, National Research Centre, Scopus affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
| | - Tharwat I Shaheen
- Department of Pretreatment and Finishing of Cellulosic based Textiles, Institute of Textile Research and Technology, National Research Centre, Scopus affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
| |
Collapse
|
2
|
Sabzi A, Rahmani A, Edalati M, Kahroba H, Dadpour MR, Salehi R, Zarebkohan A. Targeted co-delivery of curcumin and doxorubicin by citric acid functionalized Poly (ε-caprolactone) based micelle in MDA-MB-231 cell. Colloids Surf B Biointerfaces 2020; 194:111225. [DOI: 10.1016/j.colsurfb.2020.111225] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/08/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022]
|
3
|
Khaledi S, Jafari S, Hamidi S, Molavi O, Davaran S. Preparation and characterization of PLGA-PEG-PLGA polymeric nanoparticles for co-delivery of 5-Fluorouracil and Chrysin. Journal of Biomaterials Science, Polymer Edition 2020; 31:1107-1126. [DOI: 10.1080/09205063.2020.1743946] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Samira Khaledi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sevda Jafari
- Biotechnology Research Center, Tabriz University of Medical Science, Tabriz, Iran
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samin Hamidi
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ommoleila Molavi
- Biotechnology Research Center, Tabriz University of Medical Science, Tabriz, Iran
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Science, Tabriz, Iran
| | - Soodabeh Davaran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
4
|
Shotorbani BB, André H, Barzegar A, Zarghami N, Salehi R, Alizadeh E. Cell sheet biofabrication by co-administration of mesenchymal stem cells secretome and vitamin C on thermoresponsive polymer. J Mater Sci Mater Med 2018; 29:170. [PMID: 30392027 DOI: 10.1007/s10856-018-6180-z] [Citation(s) in RCA: 8] [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: 01/07/2018] [Accepted: 10/19/2018] [Indexed: 06/08/2023]
Abstract
Cell sheet technology aims at replacement of artificial extracellular matrix (ECM) or scaffolds, popular in tissue engineering, with natural cell derived ECM. Adipose tissue mesenchymal stem cells (ASCs) have the ability of ECM secretion and presented promising outcomes in clinical trials. As well, different studies found that secretome of ASCs could be suitable for triggering cell free regeneration induction. The aim of this study was to investigate the effect of using two bio-factors: secretome of ASCs (SE) and vitamin C (VC) for cell sheet engineering on a thermosensitive poly N-isopropyl acryl amide-Methacrylic acid (P(NIPAAm-MAA)) hydrogel. The results revealed that using thermosensitive P(NIPAAm-MAA) copolymer as matrix for cell sheet engineering lead to a rapid ON⁄OFF adhesion/deadhesion system by reducing temperature without enzymatic treatment (complete cell sheet release takes just 6 min). In addition, our study showed the potential of SE for inducing ASCs sheet formation. H&E staining exhibited the properties of a well-formed tissue layer with a dense ECM in sheets prepared by both SE and VC factors, as compared to those of VC or SE alone. Functional synergism of SE and VC exhibited statistically significant enhanced functionality regarding up-regulation of stemness genes expression, reduced β-galactosidase associated senescence, and facilitated sheet release. Additionally, alkaline phosphatase activity (ALP), mineralized deposits and osteoblast matrix around cells confirmed a better performance of ostogenic differentiation of ASCs induced by VC and SE. It was concluded that SE of ASCs and VC could be outstanding biofactors applicable for cell sheet technology.
Collapse
Affiliation(s)
- Behnaz Banimohammad Shotorbani
- The Umbilical Cord Stem Cell Research Center (UCSRC), Tabriz University of Medical Sciences, Tabriz, Iran
- Research Institute for Fundamental Sciences (RIFS), University of Tabriz, Tabriz, Iran
| | - Helder André
- Department of Clinical Neuroscience, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Abolfazl Barzegar
- Research Institute for Fundamental Sciences (RIFS), University of Tabriz, Tabriz, Iran
| | - Nosratollah Zarghami
- The Umbilical Cord Stem Cell Research Center (UCSRC), Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Effat Alizadeh
- The Umbilical Cord Stem Cell Research Center (UCSRC), Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
5
|
Kawatani R, Kawata Y, Yusa SI, Kelland MA, Ajiro H. Synthesis of Thermosensitive Poly(N-vinylamide) Derivatives Bearing Oligo Ethylene Glycol Chain for Kinetic Hydrate Inhibitor. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Yuuki Kawata
- Department of Chemistry, Bioscience and Environmental Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Shin-ichi Yusa
- Department of Chemistry, Bioscience and Environmental Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Malcolm A. Kelland
- Department of Mathematics and Natural Sciences, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | | |
Collapse
|
6
|
Farshbaf M, Davaran S, Rahimi F, Annabi N, Salehi R, Akbarzadeh A. Carbon quantum dots: recent progresses on synthesis, surface modification and applications. Artificial Cells, Nanomedicine, and Biotechnology 2017; 46:1331-1348. [DOI: 10.1080/21691401.2017.1377725] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Masoud Farshbaf
- Department of Medical Nanotechnology, Faculty of Advanced Medical Science, Tabriz University of Medical Science, Tabriz, Iran
| | - Soodabeh Davaran
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Science, Tabriz, Iran
- Joint Ukrainian-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems, Drohobych, Ukraine & Baku, Azerbaijan
| | - Fariborz Rahimi
- Department of Electrical Engineering, University of Bonab, Bonab, Iran
| | - Nasim Annabi
- Biomaterials Innovation Research Center, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Chemical Engineering, Northeastern University, Boston, MA, USA
| | - Roya Salehi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Science, Tabriz University of Medical Science, Tabriz, Iran
- Drug Applied Research Center, Tabriz University of Medical Science, Tabriz, Iran
| | - Abolfazl Akbarzadeh
- Joint Ukrainian-Azerbaijan International Research and Education Center of Nanobiotechnology and Functional Nanosystems, Drohobych, Ukraine & Baku, Azerbaijan
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Universal Scientific Education and Research Network (USERN), Tabriz, Iran
| |
Collapse
|
7
|
Kawatani R, Kan K, Kelland MA, Akashi M, Ajiro H. Remarkable Effect on Thermosensitive Behavior Regarding Alkylation at the Amide Position of Poly(N-vinylamide)s. CHEM LETT 2016. [DOI: 10.1246/cl.160145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Ryo Kawatani
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Kai Kan
- Institute for Research Initiatives, Nara Institute of Science and Technology
| | - Malcolm A. Kelland
- Department of Mathematics and Natural Sciences, Faculty of Science and Technology, University of Stavanger
| | - Mitsuru Akashi
- Graduate School of Frontier Biosciences, Osaka University
| | - Hiroharu Ajiro
- Graduate School of Materials Science, Nara Institute of Science and Technology
- Institute for Research Initiatives, Nara Institute of Science and Technology
- JST PRESTO
| |
Collapse
|
8
|
Hebeish A, Farag S, Sharaf S, Shaheen T. Radically new cellulose nanocomposite hydrogels: Temperature and pH responsive characters. Int J Biol Macromol 2015; 81:356-61. [DOI: 10.1016/j.ijbiomac.2015.08.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/01/2015] [Accepted: 08/08/2015] [Indexed: 12/31/2022]
|
9
|
Mamaghani PY, Kaffashi B, Salehi R, Davaran S. Synthesis, Characterization, and Viscoelastic Behavior of Thermothickening Poly (N-Isopropylacrylamide-Methacrylicacide-Vinylpyrrolidone) Nanogels as an Injectable Biocompatible Drug Carrier. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.886236] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
10
|
Xu L, Che L, Zheng J, Huang G, Wu X, Chen P, Zhang L, Hu Q. Synthesis and thermal degradation property study of N-vinylpyrrolidone and acrylamide copolymer. RSC Adv 2014. [DOI: 10.1039/c4ra05720a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of acrylamide (AM) and N-vinylpyrrolidone (NVP) copolymer with various NVP content were synthesised by free radical solution polymerization.
Collapse
Affiliation(s)
- Lili Xu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065, China
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Saleh-Ghadimi L, Fathi M, Entezami AA. Heteroarm Star-Shaped Poly (N-isopropylacryamide-co-itaconic acid) Copolymer Prepared by Glucose Core as ATRP Initiator. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2013.830251] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
12
|
Salehi R, Nowruzi K, Salehi S, Khandaghi AA, Davaran S, Entezami AA. Smart Poly (N-Isopropylacrylamide)-block-Poly (L-Lactide) Nanoparticles for Prolonged Release of Naltrexone. INT J POLYM MATER PO 2013. [DOI: 10.1080/00914037.2013.769227] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
13
|
Affiliation(s)
- Yong Zhu
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Yuntao Xu
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Guangsu Huang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| |
Collapse
|
14
|
Salehi R, Irani M, Rashidi MR, Aroujalian A, Raisi A, Eskandani M, Haririan I, Davaran S. Stimuli-responsive nanofibers prepared from poly(N-isopropylacrylamide-acrylamide-vinylpyrrolidone) by electrospinning as an anticancer drug delivery. Des Monomers Polym 2013. [DOI: 10.1080/15685551.2013.771303] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Roya Salehi
- a Drug Applied Research Center, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Mohammad Irani
- b Department of Chemical Engineering , Amirkabir University of Technology (Tehran Polytechnic) , Hafez Ave., P.O. Box 15875-4413, Tehran , Iran
| | - Mohammad-Reza Rashidi
- c Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Abdolreza Aroujalian
- b Department of Chemical Engineering , Amirkabir University of Technology (Tehran Polytechnic) , Hafez Ave., P.O. Box 15875-4413, Tehran , Iran
| | - Ahmadreza Raisi
- b Department of Chemical Engineering , Amirkabir University of Technology (Tehran Polytechnic) , Hafez Ave., P.O. Box 15875-4413, Tehran , Iran
| | - Morteza Eskandani
- c Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences , Tabriz , Iran
| | - Ismaeil Haririan
- d Department of Pharmaceutics , School of Pharmacy, Tehran University of Medical Sciences , Tehran , Iran
- e Medical Biomaterials Research Center (MBRC) , Tehran University of Medical Science , Tehran , Iran
| | - Soudabeh Davaran
- c Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences , Tabriz , Iran
| |
Collapse
|
15
|
Pernia Leal M, Torti A, Riedinger A, La Fleur R, Petti D, Cingolani R, Bertacco R, Pellegrino T. Controlled release of doxorubicin loaded within magnetic thermo-responsive nanocarriers under magnetic and thermal actuation in a microfluidic channel. ACS Nano 2012; 6:10535-10545. [PMID: 23116285 DOI: 10.1021/nn3028425] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report a procedure to grow thermo-responsive polymer shells at the surface of magnetic nanocarriers made of multiple iron oxide superparamagnetic nanoparticles embedded in poly(maleic anhydride-alt-1-ocatadecene) polymer nanobeads. Depending on the comonomers and on their relative composition, tunable phase transition temperatures in the range between 26 and 47 °C under physiological conditions could be achieved. Using a suitable microfluidic platform combining magnetic nanostructures and channels mimicking capillaries of the circulatory system, we demonstrate that thermo-responsive nanobeads are suitable for localized drug delivery with combined thermal and magnetic activation. Below the critical temperature nanobeads are stable in suspension, retain their cargo, and cannot be easily trapped by magnetic fields. Increasing the temperature above the critical temperature causes the aggregation of nanobeads, forming clusters with a magnetic moment high enough to permit their capture by suitable magnetic gradients in close proximity to the targeted zone. At the same time the polymer swelling activates drug release, with characteristic times on the order of one hour for flow rates of the same order as those of blood in capillaries.
Collapse
|
16
|
Fundueanu G, Constantin M, Asmarandei I, Harabagiu V, Ascenzi P, Simionescu BC. The thermosensitivity of pH/thermoresponsive microspheres activated by the electrostatic interaction of pH-sensitive units with a bioactive compound. J Biomed Mater Res A 2012. [PMID: 23184700 DOI: 10.1002/jbm.a.34469] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
pH/thermosensitive hydrogels whose thermosensitivity is activated by the electrostatic interaction of the pH-sensitive units with a hydrophobic bioactive compound are proposed here as sensor-based self-regulated drug delivery systems. Poly(N-isopropylacrylamide-co-acrylamide-co-aminoethylacrylamide) (poly(NIPAAm-co-AAm-co-AEAAm)) was prepared as a new pH/thermoresponsive polymer by hydrolysis of poly(N-isopropylacrylamide-co-acrylamide (poly(NIPAAm-co-AAm)) at high temperature (120°C) in the presence of ethylenediamine. Owing to the hydrophilicity of the inserted amine, the copolymers lose the thermosensitivity at physiological temperature and have a slow-phase transition at temperatures much higher than that of the human body. However, when the positively charged amine groups of the pH-sensitive units bind electrostatically with the negatively charged drug diclofenac, the copolymers retrieve the thermosensitivity. Poly(NIPAAm-co-AAm-co-AEAAm) was transformed into pH/thermoresponsive stable microspheres by an original approach based on crosslinking of the amine groups of aminoethylacrylamide (AEAAm) with glutaraldehyde at a temperature slightly below the lower critical solution temperature. The swelling/deswelling processes of microspheres occur only after the interaction of poly(NIPAAm-co-AAm-co-AEAAm) with the negatively charged drug diclofenac. The pH/temperature-sensitive microgels and dicofenac act as sensors and as the triggering agent, respectively. Conductometric titration reveals that the thermosensitivity of poly(NIPAAm-co-AAm-co-AEAAm) is retrieved when just half of its amino groups are complexed with diclofenac.
Collapse
Affiliation(s)
- Gheorghe Fundueanu
- Department of Bioactive and Biocompatible Polymers, Petru Poni Institute of Macromolecular Chemistry, Iasi 700487, Romania.
| | | | | | | | | | | |
Collapse
|
17
|
Fathi M, Entezami AA, Ebrahimi A, Safa KD. Synthesis of thermosensitive nanohydrogels by crosslinker free method based on N-isopropylacrylamide: Applicable in the naltrexone sustained release. Macromol Res 2012. [DOI: 10.1007/s13233-012-0181-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
18
|
Valipour F, Esmhosseini M, Nejati K, Kianfar H, Pasdaran A, Davaran S. Synthesis and Antibacterial Activity of Silver Nanoparticles Embedded in Smart Poly(N-Isopropylacrylamide)-Based Hydrogel Networks. J Nanotechnol Eng Med 2011. [DOI: 10.1115/1.4005677] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In recent study, we report the synthesis and antibacterial activity of silver nanoparticles embedded in smart poly(N-isopropylacrylamide)-based hydrogel networks. A series of thermosensitive poly(N-isopropylacrylamide-methacrylic acid-hydroxyethyl methacrylate) [P(NIPAAm-MAA-HEM)] with various cross-linking ratio have been obtained by cross-linking free radical polymerization of N-isopropylacrylamide (NIPAAm), methacrylic acid (MAA), and hydroxyethyl methacrylate (HEM) in the presence of triethyleneglycol dimethacrylate (TEGDMA) as cross-linker. Highly stable and uniformly distributed silver nanoparticles have been obtained with hydrogel networks via in situ reduction of silver nitrate (AgNO3) using sodium borohydride (NaBH4) as reducing agent. The formation of silver nanoparticles has been confirmed with ultraviolet visible (UV–Vis) spectroscopy. Scanning electron microscopy (SEM) results demonstrated that employed hydrogels have regulated the silver nanoparticles size to 50–150 nm. The preliminary antibacterial activity performed to these hydrogel–silver nanocomposites.
Collapse
Affiliation(s)
- Fereshteh Valipour
- Drug Applied Research Center, Tabriz University of Medical Sciences, P.O. Box 51656‐75913, Tabriz, Iran
| | - Majid Esmhosseini
- Department of Chemistry of Science, P.O. Box 165‐57153, Uremia University, Uremia, Iran
| | | | - Hasan Kianfar
- Department of Chemistry, Payame Nour University of Tabriz, P.O. Box 19395‐3697, Tabriz, Iran
| | - Ardalan Pasdaran
- Talent Students Office, Education Development Center, Student Research Committee, Tabriz University of Medical Science, P.O. Box 51656‐75913, Tabriz, Iran
| | - Soodabeh Davaran
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, P.O. Box 51656‐75913, Tabriz, Iran
| |
Collapse
|
19
|
Abstract
Cardiovascular diseases, especially myocardial ischemia, have been a leading cause of death worldwide for several decades. Despite major advances in the diagnostic and therapeutic modalities available for the clinical management of patients with cardiovascular disease, significant limitations remain. The use of very small molecular particles has recently emerged as a novel technique for diagnostic imaging and treatment of a variety of disease processes and can be broadly classified under the category Nanomedicine. Many diagnostic and therapeutic modalities based on these small molecular particles have become part of routine clinical practice, such as liposomal amphotericin B for the treatment of fungal infections and iron nanoparticles for imaging liver tumors. In this review, we discuss the potential applications of nanomedicine in the management of cardiovascular diseases.
Collapse
Affiliation(s)
- Ravi Sureddi
- Division of Cardiology, University of Arkansas for Medical Sciences and VA Medical Center, Little Rock, AR 72205; The Central Arkansas Veterans Healthcare System, Little Rock, AR 72205
| | - Jawahar L. Mehta
- Division of Cardiology, University of Arkansas for Medical Sciences and VA Medical Center, Little Rock, AR 72205; The Central Arkansas Veterans Healthcare System, Little Rock, AR 72205
| |
Collapse
|
20
|
Moogooee M, Ramezanzadeh H, Jasoori S, Omidi Y, Davaran S. Synthesis and in vitro Studies of Cross-Linked Hydrogel Nanoparticles Containing Amoxicillin. J Pharm Sci 2011; 100:1057-66. [DOI: 10.1002/jps.22351] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 07/07/2010] [Accepted: 08/25/2010] [Indexed: 11/07/2022]
|
21
|
Lu Y, Han Y, Liang J, Meng H, Han F, Wang X, Li C. Inverse thermally reversible gelation-based hydrogels: synthesis and characterization of N-isopropylacrylamide copolymers containing deoxycholic acid in the side chain. Polym Chem 2011. [DOI: 10.1039/c1py00098e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
22
|
Abstract
For years, the field of drug delivery has focused on (1) controlling the release of a therapeutic and (2) targeting the therapeutic to a specific cell type. These research endeavors have concentrated mainly on the development of new degradable polymers and molecule-labeled drug delivery vehicles. Recent interest in biomaterials that respond to their environment have opened new methods to trigger the release of drugs and localize the therapeutic within a particular site. These novel biomaterials, usually termed "smart" or "intelligent", are able to deliver a therapeutic agent based on either environmental cues or a remote stimulus. Stimuli-responsive materials could potentially elicit a therapeutically effective dose without adverse side effects. Polymers responding to different stimuli, such as pH, light, temperature, ultrasound, magnetism, or biomolecules have been investigated as potential drug delivery vehicles. This review describes the most recent advances in "smart" drug delivery systems that respond to one or multiple stimuli.
Collapse
Affiliation(s)
- Jin-Oh You
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Dariela Almeda
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - George JC Ye
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Debra T Auguste
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| |
Collapse
|
23
|
McCoy CP, Brady C, Cowley JF, McGlinchey SM, McGoldrick N, Kinnear DJ, Andrews GP, Jones DS. Triggered drug delivery from biomaterials. Expert Opin Drug Deliv 2010; 7:605-16. [PMID: 20205603 DOI: 10.1517/17425241003677731] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
24
|
Spizzirri UG, Iemma F, Puoci F, Xue F, Gao W, Cirillo G, Curcio M, Parisi OI, Picci N. Synthesis of hydrophilic microspheres with LCST close to body temperature for controlled dual-sensitive drug release. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1660] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|